Method and apparatus for controlling spectrum use in a wireless communication system

The present invention relates to control methods and devices for using spectra in wireless communication systems.

Recent global studies have shown that some systems and mobile operators want to use spectral resources more efficiently, but most of the radio spectral resources are often underutilized or underutilized at all. There is an increasing need for flexible use of the radio spectrum for new services and applications that are being put to practical use, and much research is being done around the world. Efficient use of wireless spectrum resources will be a new source of revenue for vendors and wireless network operators. The design of the new wireless infrastructure basically seeks to share the spectrum in new ways in order to make better use of the spectrum. The proposed spectrum management architecture and recently developed spectrum sharing capabilities can reduce the time it takes to adapt new services to the operator network. Furthermore, by using a flexible spectrum, it is possible to enrich the functions of services, speed them up, enhance QoS (Quality of Service), and give users greater satisfaction than conventional networks.

Four different levels of spectral management methods are known on three different time scales: spectrum sharing and coexistence (hours or days), long-term spectral allocation (minutes), short-term spectral allocation (several tens). Milliseconds to 1 second), and fast dynamic spectral allocation (10 ms timescale or less). One of the elements included in this system is the gateway concept. This gateway provides long-term spectrum allocation and some radio resource management (RRM) algorithms. One of the most difficult scenarios for spectrum sharing is short-term intermode spectrum allocation in a hierarchically overlaid cellular network. Unlike intra-RAN spectrum sharing and exchange, where adjacent cells exchange spectra, in a hierarchical overlay cellular network, cells are not adjacent and overlap, making short-term and long-term spectrum allocation a difficult task. is there. For example, if a Time Division Duplex (TDD) Metropolitan Area (MA) cell is in a Frequency Division Duplex (FDD) Wide Area (WA) cell and the MA cell or base station assigns a spectrum chunk to the WA cell. , Since all MA cells are surrounded by WA cells, no matter how the spectrum is allocated to WA cells, severe interference will occur with other MA cells. FIG. 1 shows a hierarchical overlay cellular network with three WA cells WA1-3 with base station BS1-3 operating in FDD mode. The first MAN MA cell MA1-3 is in cell WA1, the second MAN MA cell MA4-6 is in WA cell WA2, and the third MAN MA cell MA7-9 is in WA cell WA3. It is in. Since each MA cell uses TDD mode and the three MANs are geographically separated, each MA cell can operate within the same spectral band.

In some cases, one of the cells (eg, MA1 in FIG. 1) may have spectral resources that can be shared and allocated with WA1. With reference to FIG. 2, if spectrum allocation (indicated by the solid arrow) is performed without coordination with other MA cells involved, the WA cells will cause severe interference between cells MA2 and MA3. The dotted line in FIG. 2 shows the interference and the part of the spectrum where the interference occurs. As shown in FIG. 2, when cell WA1 uses chunks of spectra assigned from MA1 to WA1, interference occurs between MA2 and MA3. This is because MA2 and MA3 operate in TDD within the chunks of the spectrum given by MA1. Adjacent cells can be separated from each other using safe separation distances and exclusive zones, whereas in the case of hierarchical overlay cellular networks, the proposed safe separation distances and exclusive zones should be achieved. It is difficult.

<p num="0005"> In Figure 3, as a result of assigning the spectrum to WA1, interference occurs in MA cells in other MANs in other WA cells. If the MA cells of the other WA cells are far enough from WA1, the interference may not be significant.</p>

<p num="0006"> According to the first aspect, a method of controlling spectrum use in a first wireless communication system that participates in a spectrum allocation process in which one of the first wireless communication system and the second wireless communication system allocates a part of the spectrum to the other. Provided. The first wireless communication system has a plurality of network elements, and some or all of the plurality of network elements are in cells related to the network elements of the second wireless communication system, and within the same spectrum band. The method is working and the method is a spectral portion that can adjust the network element of the first wireless communication system and assign it from the network element of the first wireless communication system to the network element of the second wireless communication system. , Or include performing a group coordination process that includes a coordination step that identifies a spectral portion that needs to be assigned from the network element of the second wireless communication system to the network element of the first wireless communication system.</p>

<p num="0007"> As a party, you can avoid potential conflicts of interest in a multi-cell cluster (eg, a group of MA cells) surrounded by a single cell (eg, WA cell).</p>

As just one example, it will be described with reference to the attached drawings.<figref num="1">It is a figure which shows the hierarchical overlay cellular network.</figref><figref num="2">It is a figure which shows the potential interference problem which may occur in the network of FIG.</figref><figref num="3">It is a diagram showing yet another potential interference problem that can occur in the network of FIG.</figref><figref num="4">It is a figure which shows the signaling which occurs in the instance of the 1st trigger type of a spectrum allocation process.</figref><figref num="5">It is a figure which shows the signaling which occurs in the instance of the 2nd trigger type of a spectrum allocation process.</figref><figref num="6">FIG. 5 shows another signaling that occurs during an instance of the second trigger type of the spectrum allocation process.</figref><figref num="7">FIG. 5 shows yet another signaling that occurs during an instance of the second trigger type of the spectrum allocation process.</figref><figref num="8">It is a figure which shows the signaling which occurs in the short-term spectrum allocation process performed according to the 1st trigger type.</figref><figref num="9">FIG. 5 shows another signaling that occurs during the short-term spectrum allocation process performed in response to the first trigger type.</figref><figref num="10">It is a figure which shows the spectrum composition obtained as a result of the short-term spectrum allocation process performed according to the 1st trigger type.</figref><figref num="11">It is a figure which shows the signaling which occurs in the short-term spectrum allocation process performed according to the 2nd trigger type.</figref><figref num="12">It is a figure which shows the spectrum composition obtained as a result of the short-term spectrum allocation process performed according to the 2nd trigger type.</figref><figref num="13">FIG. 5 shows another spectral composition resulting from a short-term spectral allocation process performed according to the second trigger type.</figref><figref num="14A">It is a figure which shows the protocol for the instance of the 1st trigger type and the response to the 1st trigger type.</figref><figref num="14B">It is a figure which shows the protocol for the instance of the 2nd trigger type and the response to the 2nd trigger type.</figref><figref num="15A">It is a figure which shows the simulation result of the impact on the interference level of the short-term spectrum allocation process just before opening of a spectrum.</figref><figref num="15B">It is a figure which shows the simulation result of the impact on the interference level of the short-term spectrum allocation process after the short-term spectrum allocation process is completed.</figref><figref num="16">It is a figure which shows the impact to each stage of spectrum allocation of this invention.</figref>

Other embodiments and embodiments will be described in detail with reference to the drawings.

The method makes available potentially redundant spectra in order to make the spectra better available to all parties. This embodiment further fine-tunes long-term spectral allocation to improve QoS and SIR ratios, overall network coverage, throughput, and borrower revenue by making radio resources available at peak times when needed. be able to. It provides an additional source of income for the operator as a lending party by allowing the redundant radio spectrum to be used efficiently without wasting it. The method can reduce potential call blockage, especially at the cell edge, by providing better and more efficient access to more radio resources. This method improves interference management.

The term "wireless communication system" refers to a wireless access network, eg, a radio access network that includes all network elements such as base stations. The radio access network is, for example, a metropolitan area network or a wide area network. Other arrangements relate to RFID tag readers and sinks or wireless sensor network base stations, or groups of such readers forming networks that may include other devices, such as control circuits. It may be a WiMAX network. The first wireless communication system may be a micronetwork and the second wireless communication system may be a macro network. The first wireless communication system may be a metropolitan area network and the second wireless communication system may be a wide area network.

The spectrum allocation process reassigns a portion of the spectral band pre-allocated from one radio communication system to one of the first and second radio communication systems to the other of the first and second radio communication systems ( Re-assignment) is included. In other words, the spectrum assignment process (spectrum assignment) when the first spectral band is pre-allocated to the first wireless communication system and the second spectral band is pre-allocated to the second wireless communication system. process) is a pre-assigned first and second spectrum from one of the first and second radio communication systems (eg, during negotiation between the first and second radio communication systems). It may include the step of reallocating part or all of the band. The term "pre-assigned" means that a wireless communication system that has been pre-assigned a spectral band is licensed to operate within that spectral band. The act of allocating a portion of the spectrum from one system to the other system grants permission for one system to use the spectrum portion assigned to the other system and suspends the use of the portion assigned by the authorized system. However, it includes the availability of the allocated portion as needed by the licensed system. The spectrum allocation process may be a short-term spectrum allocation process (time scale of 1 second to tens of milliseconds) that is part of a larger spectrum sharing process that further includes at least a long-term spectrum allocation process. The spectrum allocation process may involve at least three radio communication systems, including the first and second radio communication systems. When used with respect to the spectrum allocation process, the term "instance" means one spectrum allocation by the spectrum allocation process.

The term "spectrum" means the radio frequency or other frequency range of electromagnetic radiation available for communication. For example, the first and second radio communication systems are radio access networks (RANs) that operate within the radio frequencies of the electromagnetic spectrum. Additional or alternative, the wireless communication system may operate, for example, within the microwave frequency range.

The terms "portion" and "band" mean a specific range of frequencies in relation to the spectrum. The range may be one continuous frequency range, or may be a frequency range divided into two or more. The terms "chunk" and "sub-chunk" also mean part or band of the spectrum.

The network elements of the first wireless communication system all operate in the same spectral band when used. The first wireless communication system may operate using TDD mode (and TDMA mode). This means that the network elements of the first wireless communication system can transmit using the same spectral band by synchronizing their operations and transmitting and receiving in different time slots.

The expression "assignable" means that the first wireless communication system can allocate a portion of the spectrum while satisfying a predetermined service requirement such as a traffic transmission success rate. In other words, the spectral portion may not be in its requirement of the first wireless communication system when it can be allocated, and the first wireless communication system can be profitable by allocating the portion.

Similarly, the expression "needs to be assigned" means that the first wireless communication system requires an additional portion of the spectrum to meet a given service requirement.

As used herein, the term "trigger" refers to signals, processing results, inside or outside the first wireless communication system that allow the wireless communication system to undertake an instance of the spectrum allocation process accordingly. Means a stimulus or situation. The trigger can trigger the spectrum allocation algorithm.

"Mobile communication device" here means a wireless device capable of performing wireless communication with a wireless communication system. For example, the term refers to user devices such as mobile phones, personal digital assistants, laptops, or PCs (wireless devices that users can carry), RFID tags / nodes or wireless sensor nodes, and devices that have WiMAX communication capabilities.

The step of adjusting the network elements is aimed at the spectrum allocation process so that all suitable network elements benefit from the spectrum allocation process, or at least none of the network elements are significantly damaged by the spectrum allocation process. First Wireless Communication System Includes the use of signaling, communication, predetermined methods or control operations that take into account the status, state, and operating parameters of each network element. The term "appropriate" network element does not cause any network element, inactive network element, or interference problem that is operating with the same or similar spectral band as other network elements. Means a network element operating within a spectral band.

The step of identifying the spectral portion includes determining the spectral quantity and its position with respect to the other spectral portion in the spectral composition. The term "spectral configuration" relates to the arrangement of parts of a spectrum and specifies the amount of each part of the spectrum and / or its position with respect to other parts of the spectrum. For example, by defining each part of the spectrum by the upper and lower limits, it is possible to indicate both the size of that part and its position with respect to other spectral parts. A part of the spectrum may be specified by its magnitude and / or spectrum ID. The spectrum ID is, for example, a number assigned to each subchunk selected from the candidates. The method of assigning spectrum IDs to subchunks can be determined before or during the spectrum allocation process. The spectral composition may include one or more guard bands and one or more licensed or unlicensed spectral regions. The spectral composition also includes information that associates each part of the spectrum with its respective entity. Here, an entity is a wireless communication system (eg, a radio access network) or a portion thereof, a group of cell stations or base stations or clusters thereof, or uplinks or downlinks belonging to such an entity.

Thus, the method provides efficient intermode spectrum allocation in a hierarchical overlay cellular network, i.e., the concept of spectrum sharing between macrocells and microcells when the microcells are overlaid on the macrocells. .. Microcells may operate in TDD mode and macrocells may operate in FDD mode. For example, when the cells involved in the spectrum allocation process are not adjacent, such as the MA cell inside the WA cell, the negotiating element is surrounded by large cells and there is no exclusion zone, which is critical and realistic. Short-term spectral allocation is done between TDD mode and FDD mode.

Two triggers for the spectrum allocation process are disclosed. One or both can be used. The method of the first aspect forms part of the response to the first trigger type, or part of the behavior of the second trigger type itself. The method of the second aspect forms part of the behavior of the first trigger type itself, or part of the response to the second trigger type. Each trigger type is based on traffic level. One trigger type involves the amount of traffic buffer in a macro cell (eg, a cell in a second wireless communication system) exceeding a threshold. Other trigger types include the amount of traffic buffer in the microcell (eg, the cell of the first wireless communication system) exceeding the threshold. The method includes periodic or continuous monitoring of the traffic buffer, including periodic analysis of the overall traffic volume in the microcell group covered by macrocells. The method includes converting the overall traffic volume to one with an inadequate spectrum or one with a sufficient spectrum.

The method adjusts the network elements of the first wireless communication system in the group coordination process and from the network elements of the first wireless communication system to the second wireless communication system in the spectrum allocation process. Includes an adjustment step that identifies the part of the spectrum assigned to the network element. Further, the step of adjusting the network element of the first wireless communication system to identify the spectral portion includes the step of identifying the spectral portion of the minimum spectral amount allocated from the network element of the first wireless communication system. .. In this way, by allocating a portion of the spectrum, the allocated spectrum portion can be used to reduce or avoid interference in the first wireless communication system resulting from communication by the network elements of the second wireless communication system. This method results in higher throughput, larger spectral resources, better interference management, and better quality of service (QoS) for the user.

The method includes a suitable method of identifying a spectral portion, which is the minimum amount of spectrum that can be allocated from the network elements of the first wireless communication system. In one embodiment, this step analyzes the traffic buffer amount of each network element of the first wireless communication system, and is required by each network element of the first wireless communication system according to the traffic buffer amount. The amount of spectrum is determined, the amount of spectrum required by each network element is compared with the amount of spectrum currently assigned to the first communication system, the difference is obtained for each network element, and the minimum difference is selected to select the spectrum. Identify the minimum amount of. The step of determining the spectral amount required by each network element of the first wireless communication system according to the traffic buffer amount includes a step of mapping the traffic buffer amount of each network element to the spectral amount using a lookup table. obtain. In other embodiments, an algorithm may be used.

Additionally or alternatively, the method adjusts the network elements of the first wireless communication system in the group coordination process from the network elements of the second wireless communication system to the first wireless communication system. Includes an adjustment step that identifies the part of the spectrum that needs to be assigned to the network elements of. As described above, this method increases the throughput for the user, increases the spectral resources, improves the interference management, and improves the QoS (Quality of Service).

As mentioned above, the method relates only to operating or active network elements and network elements operating within the spectral band where interference problems may occur after allocation. However, in one embodiment, the step of adjusting the network elements of the first wireless communication system is a spectral portion assigned from each network element of the first wireless communication system to the network element of the second wireless communication system. , Or a step of identifying a spectral portion that needs to be allocated from the network elements of the second wireless communication system to each network element of the first wireless communication system. By allocating that portion from or to each network element of the first wireless communication system, the risk of harmful conflicts of interest can be reduced.

Any suitable means of coordinating network elements may be used. In one embodiment, the step of adjusting the network elements of the first wireless communication system causes one network element of the first wireless communication system to adjust the other network elements of the first wireless communication system. Further, the one network element may be a lead network element of the first wireless communication system. In this way, one network element acts as a group leader, simplifying coordination.

The adjustment of the network elements of the first wireless communication system may be based on an appropriate strategy, in particular, to minimize interference in terms of interference with the network elements after the spectrum allocation process. Preferably, the tuning calculates how much spectrum can be allocated (how much is needed), taking into account the traffic level of each network element, and overallocates (one of the network elements of the first wireless communication system and the second). Avoid interference (which is the result of spectral overlap used by the network elements of the wireless communication system). In one embodiment, the method is signaling from the one network element of the first wireless communication system to the other network element to indicate the start of the group coordination process, and in response to the signaling, said. Each of the other network elements analyzes the data waiting to be transmitted to determine the bandwidth required to transmit the data and sends signaling indicating the required bandwidth to the one network element. It may include a step of transmitting signaling. The method may then include analyzing data awaiting transmission from said one network element of said first wireless communication system to determine the bandwidth required to transmit the data. .. The method may include a step of comparing the bandwidth required by each network element with the amount of spectrum allocated to the first communication system, determining the difference for each network element, and selecting the minimum difference. Good. Further, in the present method, from the first wireless communication system to the second wireless communication system, the spectral portion corresponding to the minimum difference in size corresponds to the code of the difference, and the first wireless communication is performed. Each network element of the system can be assigned to the network element of the second wireless communication system, or each network element of the first wireless communication system from the network element of the second wireless communication system is required. It may include the step of transmitting signaling indicating that the allocation is requested. Thus, the above confusion can be minimized.

As mentioned above, the method of the first aspect forms part of the response to the first trigger type (below). In this case, the method signals from the second wireless communication system that acts as a trigger requesting a specified spectral amount from the first wireless communication system to the network element of the second wireless communication system. May include performing the group coordination process in response to the receipt of.

As mentioned above, the method of the first aspect may be part (additional or alternative) of the operation of the second trigger type. In this case, the method comprises periodically executing the group adjustment process to trigger an instance of the spectrum allocation process. The term "periodically" means that each instance of the group coordination process runs after a (constant or variable) amount of time has passed since the previous instance. That is, the group coordination process is repeated as the case may be.

As described above, a first wireless communication system (eg, metropolitan area network) is configured to operate in TDD mode, and the method uses time division multiplexing mode in the first wireless communication system. It may work. In this case, the TDD scheme generally requires accurate synchronization to work well, so if the spectrum usage changes after the spectrum allocation process, it becomes the synchronization process of the first wireless communication system. It would be nice to have a link. In one embodiment, the method may execute an instance of spectrum allocation after the group adjustment process and notify the synchronization module of the first wireless communication system of the result of the spectrum allocation process.

According to the second aspect, a method of controlling spectrum use in a second wireless communication system that participates in a spectrum allocation process in which one of the first wireless communication system and the second wireless communication system allocates a part of the spectrum to the other. Provided. The first wireless communication system has a plurality of network elements, and some or all of the plurality of network elements are in cells related to the network elements of the second wireless communication system, and within the same spectral band. It is working and the method is In the spectrum allocation process, the network element of the second wireless communication system is assigned to the network element of the first wireless communication system, or the network element of the first wireless communication system is assigned to the second wireless communication system. Includes the step of identifying the part of the spectrum that needs to be assigned to the network elements of.

The method can be assigned from each network element of the first wireless communication system to the network element of the second wireless communication system, or from the network element of the second wireless communication system to the first wireless communication system. It may include a step of identifying the spectral portion that needs to be assigned to each network element.

The method includes analyzing data waiting to be transmitted from a network element of a second wireless communication system to determine the bandwidth required to transmit that data, and also includes a second wireless. It may further include calculating the difference between the amount of spectrum allocated to the network element of the communication system and the bandwidth required by that network element. Further, in the present method, from the second wireless communication system to the first wireless communication system, the spectral portion corresponding to the calculated difference in size corresponds to the second sign of the difference. A signaling indicating that the network element of the wireless communication system can be assigned to the first wireless communication system or that the first wireless communication system is requested to assign to the network element of the second wireless communication system. It may further include a step of transmission.

As mentioned above, the method of the second aspect forms part of the operation of the first trigger type itself, or part of the response to the second trigger type.

If the method is part of a response to a second trigger type, the method requests the allocation of a specified spectral amount from the network elements of the second wireless communication system to the first wireless communication system. In response to receiving signaling from the first wireless communication system, which acts as a trigger to perform the method.

If the method forms part of the operation of the first trigger type, the method involves periodically running the method to trigger an instance of the spectrum allocation process.

The step of transmitting signaling to the first wireless communication system may include a step of transmitting signaling to the lead network element of the first wireless communication system.

The method may include a step of causing the second wireless communication system to use frequency division multiplexing mode.

According to the third aspect, the control device for spectrum use in the first wireless communication system participates in a spectrum allocation process in which one of the first wireless communication system and the second wireless communication system allocates a part of the spectrum to the other. Provided. The first wireless communication system has a plurality of network elements, and some or all of the plurality of network elements are in cells related to the network elements of the second wireless communication system, and within the same spectrum band. In operation, the device coordinates a network element of the first wireless communication system to allocate a spectral portion from the network element of the first wireless communication system to the network element of the second wireless communication system. , Or an adjustment circuit that performs a group adjustment process that includes an adjustment step that identifies a spectral portion that needs to be allocated from the network element of the second wireless communication system to the network element of the first wireless communication system.

The tuning circuit coordinates the network element of the first wireless communication system and is assigned from the network element of the first wireless communication system to the network element of the second wireless communication system in the spectrum allocation process. The spectral portion may be specified.

The adjustment circuit can also adjust the network element of the first wireless communication system to identify a spectral portion of the minimum spectral amount that can be allocated from the network element of the first wireless communication system.

The adjustment circuit analyzes the traffic buffer amount of each network element of the first wireless communication system, and determines the spectrum amount required by each network element of the first wireless communication system according to the traffic buffer amount. Then, the amount of spectrum required by each network element is compared with the amount of spectrum currently assigned to the first communication system, the difference is obtained for each network element, and the minimum difference is selected to obtain the minimum amount of spectrum. It can also be specified.

The tuning circuit may use a look-up table to map the amount of traffic buffer of each network element to the amount of spectrum.

The tuning circuit coordinates the network element of the first wireless communication system to identify a spectral portion that needs to be assigned from the network element of the second wireless communication system to the network element of the first wireless communication system. You may.

The tuning circuit can be assigned from each network element of the first wireless communication system to the network element of the second wireless communication system, or from the network element of the second wireless communication system to the first wireless communication system. It is possible to identify the part of the spectrum that needs to be assigned to each network element of.

The adjustment circuit causes one of the network elements of the first wireless communication system to adjust the other network elements of the first wireless communication system.

The coordinating circuit is signaling from the one network element of the first wireless communication system to the other network element to indicate the start of the group coordinating process, and in response to the signaling, the coordinating circuit of the other network element. Each analyzes the data waiting to be transmitted to determine the bandwidth required to transmit the data, and transmits a signaling indicating the required bandwidth to be transmitted to the one network element. The signaling may be received from each of the other network elements.

The tuning circuit can also analyze the data awaiting transmission from said one network element of the first wireless communication system to determine the bandwidth required to transmit the data.

The tuning circuit may also compare the bandwidth required by each network element with the amount of spectrum assigned to the first communication system, determine the difference for each network element, and select the minimum difference. ..

In the adjustment circuit, the spectrum portion corresponding to the minimum difference in size from the first wireless communication system to the second wireless communication system is the first wireless communication system according to the sign of the difference. Can be assigned to each network element of the second wireless communication system, or is required to be assigned to each network element of the first wireless communication system from the network element of the second wireless communication system. You may send a signaling indicating that.

The tuning circuit receives signaling from the second wireless communication system that acts as a trigger requesting a specified spectral amount from the first wireless communication system to the network element of the second wireless communication system. Depending on the situation, the group adjustment process may be executed.

The tuning circuit can periodically perform the group tuning process to trigger an instance of the spectrum allocation process.

The apparatus executes an instance of the spectrum allocation process after the group adjustment process and notifies the synchronization module of the first wireless communication system of the result of the spectrum allocation process.

According to the fourth aspect, the control device for spectrum use in the second wireless communication system participates in the spectrum allocation process in which one of the first wireless communication system and the second wireless communication system allocates a part of the spectrum to the other. Provided. The first wireless communication system has a plurality of network elements, and some or all of the plurality of network elements are in cells related to the network elements of the second wireless communication system, and within the same spectral band. It is operating and the device is In the spectrum allocation process, the network element of the second wireless communication system is assigned to the network element of the first wireless communication system, or the network element of the first wireless communication system is assigned to the second wireless communication system. Includes specific circuits that identify the parts of the spectrum that need to be assigned to the network elements of.

The specific circuit can be assigned from each network element of the first wireless communication system to the network element of the second wireless communication system, or from the network element of the second wireless communication system to the first wireless communication system. It is possible to identify the part of the spectrum that needs to be assigned to each network element of.

The particular circuit can analyze data waiting to be transmitted from said one network element of the second wireless communication system and determine the bandwidth required to transmit the data.

The particular circuit may calculate the difference between the amount of spectrum currently allocated to the network element of the second wireless communication system and the bandwidth required by the network element.

In the specific circuit, the spectrum portion corresponding to the calculated difference in size from the second wireless communication system to the first wireless communication system is the second wireless according to the sign of the difference. Sends a signaling indicating that the network element of the communication system can be assigned to the first wireless communication system, or that the first wireless communication system is requested to allocate to the network element of the second wireless communication system. You may.

The specific circuit serves as a trigger requesting the allocation of a specified spectral amount from the network element of the second wireless communication system to the first wireless communication system for signaling from the first wireless communication system. A part of the spectrum may be specified depending on the reception.

The specific circuit can periodically identify the spectral portion to trigger an instance of the spectral allocation process.

The particular circuit may transmit signaling to the lead network element of the first wireless communication system.

According to a fifth aspect, a method of controlling spectrum use in a first wireless communication system that participates in a spectrum allocation process in which one of the first wireless communication system and the second wireless communication system allocates a part of the spectrum to the other. Provided. The first wireless communication system has a plurality of network elements, and some or all of the plurality of network elements are in cells related to the network elements of the second wireless communication system, and the time division multiplexing method is used. The second wireless communication system uses a frequency split multiplexing system, and the method is a network element of the first wireless communication system at the stage of executing the group adjustment process. To identify a spectral portion that can be assigned from the first wireless communication system to a network element of the second wireless communication system, and from the first wireless communication system to the first in the spectrum allocation process. An allocation step of allocating a spectrum portion identified to a network element of the wireless communication system 2 and a transmission step of transmitting a signaling indicating the spectrum composition after the spectrum allocation process to the synchronization module of the first wireless communication system. The first wireless communication system includes a switching step of switching to the spectrum configuration in cooperation with the operation of the synchronization module.

According to the sixth aspect, the control device for spectrum use in the first wireless communication system participates in a spectrum allocation process in which one of the first wireless communication system and the second wireless communication system allocates a part of the spectrum to the other. Provided. The first wireless communication system has a plurality of network elements, and a part or all of the plurality of network elements is in a cell related to the network element of the second wireless communication system, and the time division multiplexing method is used. The second wireless communication system uses a frequency division multiplexing method, and the device uses the network element of the first wireless communication system at the stage of executing the group adjustment process. To identify a spectral portion that can be assigned from the first wireless communication system to a network element of the second wireless communication system, and from the first wireless communication system to the first in the spectrum allocation process. A spectrum allocation circuit that allocates a spectrum portion specified to a network element of the wireless communication system of 2 and the spectrum allocation circuit transfers a signaling indicating a spectrum configuration after the spectrum allocation process to the synchronization module of the first wireless communication system. The first wireless communication system includes a control circuit for transmitting and switching to the spectrum configuration in cooperation with the operation of the synchronization module.

According to a seventh aspect, a computer program is provided that causes the computer to perform the method of the first, second, or fifth aspect when executed on a computer that is part of a network element or external control element. ..

According to the eighth aspect, a computer program is provided that makes the computer a device of the third, fourth, or sixth aspect when loaded into a computer that is part of a network element or an external control element.

According to the ninth aspect, the computer program of the seventh or eighth aspect is provided, which is carried by a carrier medium which can be a recording medium and / or a transmission medium.

According to a tenth aspect, when executed on a computer, the first wireless communication system participates in a spectrum allocation process in which one of the first wireless communication system and the second wireless communication system allocates a part of the spectrum to the other. A computer program is provided that executes a method of controlling spectrum use in a wireless communication system. The first wireless communication system has a plurality of network elements, and some or all of the plurality of network elements are in cells related to the network elements of the second wireless communication system, and within the same spectrum band. Working, the method adjusts the network elements of the first wireless communication system and assigns the network elements of the first wireless communication system to the network elements of the second wireless communication system. , Or include performing a group coordination process that includes a coordination step that identifies a spectral portion that needs to be allocated from the network element of the second wireless communication system to the network element of the first wireless communication system.

According to the eleventh aspect, a computer controlling spectrum use in a first wireless communication system that participates in a spectrum allocation process in which one of the first wireless communication system and the second wireless communication system allocates a part of the spectrum to the other. The program is provided. The first wireless communication system has a plurality of network elements, and some or all of the plurality of network elements are in cells related to the network elements of the second wireless communication system, and within the same spectrum band. The computer program is operating and the computer program adjusts the network element of the first wireless communication system to allocate the network element of the first wireless communication system to the network element of the second wireless communication system. Includes an adjustment code that performs a group adjustment process that includes an adjustment step that identifies a portion, or a spectral portion that needs to be assigned from the network element of the second wireless communication system to the network element of the first wireless communication system.

The circuit can include a processor, memory, and bus lines. The above circuit may share circuit elements.

The present invention includes one or more embodiments, embodiments, or features, alone or in various combinations, with or without particular reference (including claims).

The above outline is an example and is not limited.

Embodiments of the present invention relate to intermode spectrum allocation methods in a hierarchical overlay cellular network.

Assume that each BS group of MAs allocated in WA can be grouped as a cluster and one BS is the leader of that BS cluster.

We disclose two trigger types that initiate intermode spectral allocation in a hierarchical overlay cellular network.

In the first trigger type, in the short term, the base station BS1 in cell WA1 measures the current data waiting to be transmitted in its buffer.<maths num="1"><img id="000002" he="23" wi="128" file="JP5228945B2_D0001.tif" img-format="tif" img-content="drawing" /></maths>Where d_kIs the amount of data in the kth buffer at that time. If the amount of data D is greater than a certain threshold, base station BS1 in cell WA1 measures the extra traffic load and maps that traffic load to the extra subchunks of the spectrum needed to safely deliver the data. As shown in FIG. 4, base station BS1 in cell WA1 transmits a first trigger type signal requesting cell MA1, the leader of the MA base station, to receive its spectral quantity from MAN. At this time, it is not specified where the required spectral chunk is in the radio spectrum band.

The second trigger type is a group-tuned trigger process, in which the leader cell MA1 is first group-tuned to another MA base station in a short-term and periodic manner, as shown in Figure 5. Notifies the start of the triggered process. Each MAN base station measures data waiting to be transmitted:<maths num="2"><img id="000003" he="32" wi="130" file="JP5228945B2_D0001.tif" img-format="tif" img-content="drawing" /></maths>Where d_knIs the amount of data in the kth buffer of the nth base station of MAN. Each base station uses a look-up table to collect the required spectral amount of data to be transmitted._n(At the time of mapping, the base station may consider the radio channel at that time). All involved base stations then send an estimated requested spectrum to MA1's leader base station, MA1, as shown in FIG. Assuming that the total bandwidth currently assigned to the MA is W, the leader base station BS determines the next BW.<maths num="3"><img id="000004" he="24" wi="138" file="JP5228945B2_D0001.tif" img-format="tif" img-content="drawing" /></maths>

When BW &lt;0, the leader base station MA1 sends a signal containing the spectral request to WAN base station BS1 (ie, the nearest WAN base station), as shown in FIG. On the other hand, when BW&gt; 0, the leader base station MA1 sends a signal to the WAN base station BS1 notifying the base station BS1 that the spectrum is available, as shown in FIG.

Describes the response to two trigger types that initiate intermode spectral allocation in a hierarchical overlay cellular network.

For the first trigger type, short-term and periodic, the leader cell MA1 first notifies the other MA base stations of the start of the group coordination response process. Each MA base station measures data waiting to be transmitted:<maths num="4"><img id="000005" he="31" wi="138" file="JP5228945B2_D0001.tif" img-format="tif" img-content="drawing" /></maths>Where d_knIs the amount of data in the kth buffer of the nth base station of MAN. Each base station uses a look-up table to release the data waiting to be transmitted, which is a spectral amount B._n(At the time of mapping, the base station may consider the radio channel at that time). All involved base stations then send an estimated requested spectrum to the leader base station MA1, as shown in FIG. Assuming that the total bandwidth currently assigned to the MA is W, the leader base station BS determines the next BW.<maths num="5"><img id="000006" he="23" wi="140" file="JP5228945B2_D0001.tif" img-format="tif" img-content="drawing" /></maths>

When BW&gt; 0, the leader base station MA1 notifies the WA base station BS1 of the available bandwidth, as shown in FIG.

The two systems accept the new spectrum and complete the spectrum allocation process, as shown in Figure 10. The black part included in the spectrum shown on the right side of FIG. 10 shows the spectrum part assigned to the WA cell WA1 from the MA cell MA1-3. This part is no longer used in TDD, it is used in FDD, and it is one of the sub-chunks shown to belong to the WA network.

In response to the second trigger type, WA base station BS1 first receives a spectrum request or spectrum availability from cell MA1, which is the leader of the MA.

WA base station BS1 measures data waiting to be transmitted:<maths num="6"><img id="000007" he="30" wi="135" file="JP5228945B2_D0001.tif" img-format="tif" img-content="drawing" /></maths>Where d_kIs the amount of data in the kth buffer of WA base station BS1. The WA base station BS1 uses a look-up table to map the data waiting to be transmitted to the spectral amount B required for data transmission (at the time of mapping, BS considers the radio channel at that time. May be good). Assuming that the total bandwidth currently allocated to the MA cell is W, the WA base station BS determines the next BW.<maths num="7"><img id="000008" he="28" wi="125" file="JP5228945B2_D0001.tif" img-format="tif" img-content="drawing" /></maths>

When BW&gt; 0 and cell MA1 which is the leader base station of MAN requires the spectrum, WA base station BS1 gives the leader MA1 of MA the amount of spectrum available, as shown in FIG. Notice.

If the MA leader cell MA1 is satisfied with the amount of spectrum allowed, the process is complete and the MAN and WAN switch to the new spectral configuration, as shown in Figure 12.

On the other hand, when BW &lt;0 and the MA leader cell MA1 was signaling the availability of the spectrum, the WA base station BS1 is assigned to the MA leader cell MA1 as shown in FIG. Notify that the available spectrum is acceptable.

FIG. 14A shows a protocol for an instance of the first trigger type and a response to the first trigger type. As can be seen from the figure, the macro cell BS periodically compares the buffer amount (load) of the traffic buffer with the threshold value. This threshold can be set according to quality of service and traffic type. The amount of buffer should not exceed a certain amount, otherwise buffer overflow will occur and QoS will be degraded. When the buffer amount of the traffic buffer is greater than that threshold, the macrocell BS (using a given look-up table) determines the extra spectral amount required to reduce the buffer amount to a level below that threshold. .. Spectral traffic data pipe using the amount of traffic buffer It may be mapped to a pipe) to link the process of dynamic spectrum allocation to the process of modifying traffic, data pipes, and interference. The macrocell BS transmits a spectral request that specifies the amount of spectrum required for the microcell BS reader (eg, MA cell MA1). The microcell BS reader sends a request for information on the current (current) traffic buffer amount to each of the other microcell BSs. Each microcell BS (eg, MA cell WA2, WA3) determines the total amount of data waiting to be sent in the traffic buffer, and the microcell BS determines the amount of traffic (using a given look-up table). Map to the required amount of spectrum. If this spectral amount is less than the then spectral allocation to this microcell BS, the BS sends a signal to the microcell BS reader notifying the open spectral amount. Otherwise, the microcell BS will notify that there is no available spectrum and the process will end. The microcell BS reader selects the minimum spectrum release report (including its own spectrum release report) received from the microcell BS to determine the total amount (and its ID) of the spectrum that can be opened to the macrocell BS. Microcell BS reader is a micro-cell sublayer Report the amount and ID of the spectrum that can be released from the sub-layer) to the macrocell BS. Macrocell BS evaluates the offer (amount and ID of spectrum that can be opened) (makes sure that the final spectral composition is harmless to Macrocell BS in terms of interference), and if the offer is accepted, micro Send a request to the cell BS reader to proceed to the new spectrum allocation and respond. (If the offer cannot be received, the process ends.) The microcell BS reader sends a request (and the ID of the spectrum to be solved) to the microcell BS to make a new spectrum allocation. The microcell BS sends the acknowledgment to the microcell BS reader, and the microcell BS reader sends the acknowledgment to the macrocell BS. The macrocell BS, microcell BS reader, and microcell BS then accept the new spectral composition.

FIG. 14B shows a protocol for an instance of the second trigger type and a response to the second trigger type. The microcell BS reader signals the microcell BS to start the group coordination trigger process. Each microcell BS determines the total amount of data waiting to be transmitted in the traffic buffer and maps the amount of traffic (using a given look-up table) to the amount of spectrum the microcell BS requires. Next, each microcell BS determines BW = (spectral allocation at that time)-(required spectrum), and tells the microcell BS reader BW (total spectral amount that each BS can open, or the total required by each BS). Spectral quantity) is reported. The microcell BS reader selects the minimum BW report received from the microcell BS to determine the total amount of spectrum (or the amount required by the microcell layer) that can be opened to the macrocell BS. (If more than one microcell BS requires a spectrum from the macrocell BS, this method chooses the maximum BW report instead of the minimum BW report so that the microcell BS has sufficient bandwidth. Including the step of making it possessable. In addition, the method may include the step of starting with the maximum BW report and decreasing it if the negotiation is not successful.) The microcell BS reader is released from the microcell sublayer. Report the amount and ID of the spectrum that can be (or required by the microcell sublayer) to the macrocell BS. Macrocell BS compares its traffic buffer amount to the threshold value, and in order to reduce the buffer amount to a level below the threshold value, the extra traffic buffer amount required by Macrocell BS (using a predetermined lookup table) is required. Map to spectral quantity. Next, the macrocell BS determines BW1 = (spectrum allocation at that time)-(required spectrum). Only one of the microcell sublayer and macrocell BS is spec When the couture is not needed (eg, sign (BW1) EXOR sign (BW) = 1), for example, identify the new spectral allocation as described above. The macrocell BS sends a request to the microcell BS reader for a new spectrum allocation. The microcell BS reader sends the microcell BS a request for a new spectrum assignment (and the ID of the spectrum to be solved). The microcell BS sends the acknowledgment to the microcell BS reader, and the microcell BS reader sends the acknowledgment to the macrocell BS. The macrocell BS, microcell BS reader, and microcell BS then accept the new spectral composition.

The following description relates to performance evaluation and simulation results. For simulation, assume there are 3 MA BSs in the WA cell. Assume that MA BS is operating in TDD mode and WA BS is operating in FDD mode. It is assumed that the bit error rate (BER) selected for the simulation is 10-3 and the read-muller channel code RM (1, m) is used. Consider the adaptive channel coding rate of the data packet and the radio node so that the radio node can adjust the transmission rate and the target SIR value. The results of equivalent throughput can be obtained using the SIR results shown in Table 1.<tables num="1"><img id="000009" he="99" wi="138" file="JP5228945B2_D0001.tif" img-format="tif" img-content="drawing" /></tables>

FIG. 15A is a diagram showing the simulation results of the impact on the interference level of the short-term spectrum allocation process immediately before the spectrum is opened.

On the other hand, FIG. 15B is a diagram showing the simulation result of the impact on the interference level of the short-term spectrum allocation process after the completion of the short-term spectrum allocation process. As can be seen from the figure, when the negotiation is successful and part of the spectrum is allocated from the MA to the WA BS in question, the interference is reduced and the SIR is improved.

FIG. 16 is a diagram showing the impact of the present invention on the stage of spectrum allocation. It has a great impact on short-term spectrum allocation and cell-to-cell resource partitioning.

Needless to say, the above circuit may have other functions in addition to the functions described, and these functions may be executed by the same circuit.

To the extent that the applicant can implement it on the basis of the entire specification in view of the ordinary knowledge of those skilled in the art, regardless of whether or not the problems disclosed herein can be solved without limiting the scope of claims. The individual features described in (1) and combinations of such features are disclosed herein. Aspects of the present invention consist of such individual features or combinations thereof. It will be apparent to those skilled in the art that various modifications can be made within the scope of the present invention in view of the above description. The present invention extends to the following appendices. (Appendix 1) A method for controlling spectrum use in a first wireless communication system in which one of the first wireless communication system and the second wireless communication system participates in a spectrum allocation process in which a part of the spectrum is allocated to the other. The first wireless communication system has a plurality of network elements, and some or all of the plurality of network elements are in cells related to the network elements of the second wireless communication system, and within the same spectrum band. It is working and the method is A spectrum portion that can be assigned from the network element of the first wireless communication system to the network element of the second wireless communication system by adjusting the network element of the first wireless communication system, or the second wireless communication system. A method that includes performing a group adjustment process that includes an adjustment step that identifies the spectral portion that needs to be assigned from the network element of (Appendix 2) In the group adjustment process, the network element of the first wireless communication system is adjusted, and in the spectrum allocation process, the network element of the first wireless communication system is changed to the second wireless communication system. The method of Appendix 1, which includes an adjustment step that identifies the spectral portion that can be assigned to the network element. (Appendix 3) The step of adjusting the network element of the first wireless communication system to specify the spectrum part is the step of specifying the spectrum part of the minimum spectral amount that can be allocated from the network element of the first wireless communication system. The method described in Appendix 2, including. (Appendix 4) The step of specifying the spectral portion of the minimum spectral amount that can be allocated from the network element of the first wireless communication system is the step of analyzing the traffic buffer amount of each network element of the first wireless communication system. A step of determining the amount of spectrum required by each network element of the first wireless communication system according to the amount of traffic buffer, and the amount of spectrum required for each network element are currently assigned to the first communication system. The method according to Appendix 3, which includes a step of obtaining a difference by comparing with a spectral amount and a step of selecting a minimum value of the difference to specify the minimum spectral amount. (Appendix 5) At the stage of determining the spectral amount required by each network element of the first wireless communication system according to the traffic buffer amount, the traffic buffer amount of each network element is mapped to the spectral amount using a lookup table. The method described in Appendix 4, which includes the steps to be performed. (Appendix 6) In the group adjustment process, the network element of the first wireless communication system needs to be adjusted and assigned from the network element of the second wireless communication system to the network element of the first wireless communication system. The method of Appendix 1, which includes an adjustment step to identify the spectral portion. (Appendix 7) The step of adjusting the network element of the first wireless communication system is a spectrum portion that can be assigned from each network element of the first wireless communication system to the network element of the second wireless communication system, or the above. The method according to any one of Supplementary note 1 to 6, comprising a step of identifying a spectral portion that needs to be assigned to each network element of the first wireless communication system from the network elements of the second wireless communication system. (Appendix 8) The step of adjusting the network element of the first wireless communication system is to make one network element of the first wireless communication system adjust the other network element of the first wireless communication system. The method described in any one of 1 to 7. (Appendix 9) Signaling from the one network element of the first wireless communication system to the other network element indicating the start of the group coordination process, and in response to the signaling, the other network element Each step analyzes the data waiting to be transmitted to determine the bandwidth required to transmit the data, and transmits the signaling indicating the required bandwidth to the one network element. When, The method according to Appendix 8, wherein the one network element includes a step of receiving the signaling from each of the other network elements. (Supplementary Note 10) The supplementary note 9 includes a step of analyzing data waiting to be transmitted from the one network element of the first wireless communication system and determining a bandwidth required for transmitting the data. the method of. (Appendix 11) A step of comparing the bandwidth required by each network element with the amount of spectrum allocated to the first communication system, obtaining a difference for each network element, and selecting the minimum difference is included. The method described in Appendix 10. (Appendix 12) From the first wireless communication system to the second wireless communication system, the spectral portion corresponding to the minimum difference in size corresponds to the sign of the difference of the first wireless communication system. Each network element can be assigned to the network element of the second wireless communication system, or the network element of the second wireless communication system is requested to be assigned to each network element of the first wireless communication system. 11. The method of Appendix 11, which comprises the step of transmitting a signaling indicating. (Supplementary note 13) The method according to any one of Supplementary note 8 to 12, wherein the one network element is a lead network element of the first wireless communication system. (Appendix 14) For receiving signaling from the second wireless communication system that functions as a trigger requesting a specified spectral amount from the first wireless communication system to the network element of the second wireless communication system. The method according to any one of Appendix 1 to 13, comprising the step of carrying out the group coordination process accordingly. (Supplementary note 15) The method according to any one of Supplementary note 1 to 13, comprising a step of periodically executing the group adjustment process to trigger an instance of the spectrum allocation process. (Supplementary note 16) The method according to any one of Supplementary note 1 to 15, which comprises a step of causing the first wireless communication system to use a time division multiplexing mode. (Supplementary note 17) The method according to Supplementary note 16, wherein an instance of spectrum allocation is executed after the group adjustment process, and the result of the spectrum allocation process is notified to the synchronization module of the first wireless communication system. (Appendix 18) A method for controlling spectrum use in a second wireless communication system in which one of the first wireless communication system and the second wireless communication system participates in a spectrum allocation process in which a part of the spectrum is allocated to the other. The first wireless communication system has a plurality of network elements, and some or all of the plurality of network elements are in cells related to the network elements of the second wireless communication system, and within the same spectrum band. It is working and the method is In the spectrum allocation process, the network element of the second wireless communication system can be assigned to the network element of the first wireless communication system, or the network element of the first wireless communication system can be assigned to the second wireless communication system. A method that includes the step of identifying the part of the spectrum that needs to be assigned to a network element of. (Appendix 19) Each network element of the first wireless communication system can be assigned to the network element of the second wireless communication system, or the network element of the second wireless communication system can be assigned to the first wireless communication system. The method of Appendix 18, which comprises the step of identifying the spectral portion that needs to be assigned to each network element. (Appendix 20) In Appendix 18 or 19, the step of analyzing the data waiting to be transmitted from the one network element of the second wireless communication system and determining the bandwidth required for transmitting the data. The method described . 21. The method of Appendix 20, comprising calculating the difference between the amount of spectrum currently allocated to the network element of the second wireless communication system and the bandwidth required by the network element. (Appendix 22) From the second wireless communication system to the first wireless communication system, the spectral portion corresponding to the calculated difference in size corresponds to the second wireless communication according to the sign of the difference. A signaling indicating that the network element of the system can be assigned to the first wireless communication system or that the first wireless communication system is requested to assign to the network element of the second wireless communication system is transmitted. 21. The method described in Appendix 21, including steps. (Appendix 23) Reception of signaling from the first wireless communication system that functions as a trigger requesting allocation of a specified spectral amount from the network element of the second wireless communication system to the first wireless communication system. The method according to any one of Appendix 18 to 22, comprising the step of carrying out the method according to the above. 24. The method of Appendix 23, comprising periodically performing the method to trigger an instance of the spectrum allocation process. (Supplementary note 25) The step of transmitting signaling to the first wireless communication system includes the step of transmitting signaling to the lead network element of the first wireless communication system, according to any one of Supplementary note 22 to 24. Method. (Supplementary note 26) The method according to any one of Supplementary note 18 to 25, which comprises a step of causing the second wireless communication system to use a frequency division multiplexing mode. (Appendix 27) A control device for spectrum use in a first wireless communication system in which one of the first wireless communication system and the second wireless communication system participates in a spectrum allocation process that allocates a part of the spectrum to the other. The first wireless communication system has a plurality of network elements, and some or all of the plurality of network elements are in cells related to the network elements of the second wireless communication system, and within the same spectrum band. It is operating and the device is A spectrum portion that can be assigned from the network element of the first wireless communication system to the network element of the second wireless communication system by adjusting the network element of the first wireless communication system, or the second wireless communication system. A device that includes an adjustment circuit that performs a group adjustment process that includes an adjustment step that identifies the spectral portion that needs to be assigned from the network element of the first wireless communication system to the network element of the first wireless communication system. (Appendix 28) The adjustment circuit adjusts the network element of the first wireless communication system, and in the spectrum allocation process, the network element of the first wireless communication system to the network of the second wireless communication system. The device of Appendix 27, which identifies the spectral portion that can be assigned to an element. (Supplementary note 29) The adjusting circuit adjusts the network element of the first wireless communication system to specify the spectral portion of the minimum spectral amount that can be allocated from the network element of the first wireless communication system, in Appendix 28. The device described. (Appendix 30) The adjustment circuit analyzes the traffic buffer amount of each network element of the first wireless communication system, and is required by each network element of the first wireless communication system according to the traffic buffer amount. The amount of spectrum is determined, the amount of spectrum required by each network element is compared with the amount of spectrum currently assigned to the first communication system, the difference is obtained for each network element, and the minimum difference is selected to select the spectrum. The device according to Appendix 29, which specifies the minimum amount of. (Appendix 31) The apparatus according to Appendix 30, wherein the adjustment circuit maps the traffic buffer amount of each network element to the spectrum amount using a lookup table. (Appendix 32) The adjustment circuit adjusts the network element of the first wireless communication system, and the spectrum that needs to be assigned from the network element of the second wireless communication system to the network element of the first wireless communication system. The device according to Appendix 27, which identifies a portion. (Appendix 33) The adjustment circuit can be assigned from each network element of the first wireless communication system to the network element of the second wireless communication system, or from the network element of the second wireless communication system to the first. The device according to any one of Appendix 27 to 32, which identifies the spectral portion that needs to be assigned to each network element of the wireless communication system of. (Supplementary Note 34) The adjustment circuit according to any one of Supplementary note 27 to 33, wherein one of the network elements of the first wireless communication system adjusts the other network element of the first wireless communication system. apparatus. (Appendix 35) The adjustment circuit is A signaling indicating the start of the group coordination process from the one network element of the first wireless communication system to the other network element, and in response to the signaling, each of the other network elements transmits. The data waiting to be processed is analyzed to determine the bandwidth required to transmit the data, and the signaling indicating the required bandwidth is transmitted to the one network element to transmit the signaling. The device according to Appendix 34, which receives the signaling from each of the other network elements in the one network element. (Appendix 36) The adjustment circuit analyzes data waiting to be transmitted from the one network element of the first wireless communication system and determines the bandwidth required for transmission of the data, Appendix 35. The device described in. (Appendix 37) The adjustment circuit compares the bandwidth required by each network element with the amount of spectrum allocated to the first communication system, obtains a difference for each network element, and selects the minimum difference. The device according to Appendix 36. (Appendix 38) In the adjustment circuit, the spectrum portion corresponding to the minimum difference in size from the first wireless communication system to the second wireless communication system is the first, depending on the sign of the difference. Each network element of the wireless communication system can be assigned to the network element of the second wireless communication system, or the network element of the second wireless communication system can be assigned to each network element of the first wireless communication system. The device according to Appendix 37, which transmits a signaling indicating that it is requested. (Supplementary note 39) The apparatus according to any one of Supplementary note 34 to 38, wherein the one network element is a lead network element of the first wireless communication system. (Appendix 40) From the second wireless communication system, which functions as a trigger for requesting a specified spectral amount from the first wireless communication system to the network element of the second wireless communication system. 27. 39. The apparatus of any one of Appendix 27-39, which performs the group coordination process in response to the reception of the signaling of. (Supplementary Note 41) The apparatus according to any one of Supplementary note 27 to 39, wherein the adjustment circuit periodically executes the group adjustment process in order to trigger an instance of the spectrum allocation process. (Supplementary note 42) The device according to any one of Supplementary note 27 to 41, wherein the first wireless communication system uses a time division multiplexing mode. (Appendix 43) The apparatus according to Appendix 42, which executes an instance of the spectrum allocation process after the group adjustment process and notifies the synchronization module of the first wireless communication system of the result of the spectrum allocation process. (Appendix 44) A control device for spectrum use in a second wireless communication system in which one of the first wireless communication system and the second wireless communication system participates in a spectrum allocation process that allocates a part of the spectrum to the other. The first wireless communication system has a plurality of network elements, and some or all of the plurality of network elements are in cells related to the network elements of the second wireless communication system, and within the same spectrum band. It is operating and the device is In the spectrum allocation process, the network element of the second wireless communication system can be assigned to the network element of the first wireless communication system, or the network element of the first wireless communication system can be assigned to the second wireless communication system. A device that includes a specific circuit that identifies the part of the spectrum that needs to be assigned to a network element of. (Appendix 45) The specific circuit can be assigned to the network element of the second wireless communication system from each network element of the first wireless communication system, or the first from the network element of the second wireless communication system. 44. The device of Appendix 44, which identifies the spectral portion that needs to be assigned to each network element of the wireless communication system of. (Appendix 46) The particular circuit analyzes data waiting to be transmitted from said one network element of the second wireless communication system and determines the bandwidth required to transmit the data, Appendix 44 or 45. (Supplementary note 47) The specific circuit calculates the difference between the spectral amount currently allocated to the network element of the second wireless communication system and the bandwidth required by the network element, according to Supplementary note 46. apparatus. (Appendix 48) In the specific circuit, the spectrum portion corresponding to the calculated difference in size from the second wireless communication system to the first wireless communication system is described according to the sign of the difference. That the network element of the second wireless communication system can be assigned to the first wireless communication system, or that the first wireless communication system is requested to assign to the network element of the second wireless communication system. The device according to Appendix 47, which transmits the indicated signaling. (Appendix 49) The first wireless communication system functions as a trigger for requesting allocation of a specified spectral amount from a network element of the second wireless communication system to the first wireless communication system. The device of any one of Appendix 44-48, which identifies a portion of the spectrum in response to reception of signaling from. (Supplementary Note 50) The apparatus according to Appendix 49, wherein the specific circuit periodically identifies the spectral portion to trigger an instance of the spectral allocation process. (Supplementary Note 51) The apparatus according to any one of Supplementary note 48 to 50, wherein the specific circuit transmits signaling to a read network element of the first wireless communication system. (Supplementary note 52) The apparatus according to any one of Supplementary note 44 to 51, wherein the second wireless communication system uses a frequency division multiplexing mode. (Appendix 53) A method for controlling spectrum use in a first wireless communication system in which one of the first wireless communication system and the second wireless communication system participates in a spectrum allocation process in which a part of the spectrum is allocated to the other. The first wireless communication system has a plurality of network elements, and some or all of the plurality of network elements are in cells related to the network elements of the second wireless communication system, and a time division multiplexing method is used. The second wireless communication system uses a frequency division multiplexing method, and the method is described in the same spectrum band. The stage of performing the group coordination process adjusts the network elements of the first wireless communication system to identify the spectral portion that can be assigned from the first wireless communication system to the network elements of the second wireless communication system. Adjustment stage and In the spectrum allocation process, an allocation step of allocating a spectrum portion specified from the first wireless communication system to a network element of the second wireless communication system, and After the spectrum allocation process, a transmission step of transmitting signaling indicating the spectrum composition to the synchronization module of the first wireless communication system, and A method in which the first wireless communication system includes a switching step of switching to the spectral configuration in cooperation with the operation of the synchronization module. (Appendix 54) A control device for spectrum use in a first wireless communication system in which one of the first wireless communication system and the second wireless communication system participates in a spectrum allocation process that allocates a part of the spectrum to the other. The first wireless communication system has a plurality of network elements, and some or all of the plurality of network elements are in cells related to the network elements of the second wireless communication system, and a time division multiplexing method is used. The second wireless communication system uses a frequency division multiplexing method, and the device is operated in the same spectrum band. The coordinating circuit that executes the group coordinating process coordinates the network element of the first wireless communication system to identify a spectral portion that can be assigned from the first wireless communication system to the network element of the second wireless communication system. Adjustment circuit and A spectrum allocation circuit that allocates a spectrum portion specified from the first wireless communication system to a network element of the second wireless communication system in the spectrum allocation process. The spectrum allocation circuit transmits signaling indicating the spectrum composition after the spectrum allocation process to the synchronization module of the first wireless communication system. The first wireless communication system includes a control circuit for switching to the spectrum configuration in cooperation with the operation of the synchronization module. (Appendix 55) A computer program that, when executed on a computer that is part of a network element or external control element, causes the computer to perform the method described in any one of Appendix 1-26, or 53. (Appendix 56) A computer program that, when loaded into a computer that is part of a network element or external control element, turns the computer into a device according to any one of Appendix 27-52, or 54. (Appendix 57) The computer program described in Appendix 55 or 56 carried on the carrier medium. (Appendix 58) The computer program according to Appendix 57, wherein the carrier carrier is a recording medium. (Supplementary note 59) The computer program according to Supplementary note 57, wherein the carrier carrier is a transmission medium.