Transmission mobile equipment request in radio up-line system

The first method for transmitting mobile device requests in a wireless uplink system. Technical Field The present invention relates to a wireless communication system, and more particularly to a wireless connection between a mobile device and a base station. Background Art In a wireless communication system, a base station and one or more mobile devices The basic mechanism of communication is to use so-called segments to exchange messages. Orthogonal Frequency Division Multiplexing (OFDM) system is such a system. The segment shown in Figure 1 is a combination of slot index and waveform index. Slot is a basic Time unit, it has a unique time slot index associated with it. During any particular time slot interval, several orthogonal or non-orthogonal waveforms can be sent and received. Each waveform has a unique waveform index. The message of a specific type (interest) in the communication system is a mobile device request for an uplink healthy path. Typically, more than one mobile device shares the same uplink healthy path resource to transmit an access request to the base station. As shown in Figures 2A and 2B, different The mobile device may be allocated segments with the same slot index, and either the same waveform index or different waveform indexes, but the waves are not orthogonal. In Figure 2A, the mobile device, such as #1, sends a request, and the other mobile The device, such as #2, does not send a request. Therefore, there will be no conflict between the request from mobile device #1 and the request from mobile device #2. However, since the requests from each mobile station may arrive at the base station randomly, such As shown in Figure 2B, from mobile device #1 and mobile device #2 There is a high possibility of conflicts between the requests. These requests must be retransmitted, resulting in undesired delays. In addition, because the mobile device does not have power control during the access request process, and because of the characteristics of the request transmission It is random and bursty, so the request process of the uplink health path is extremely heavy, and its traceability is not up to the requirement.

01121626.3 Summary of the Invention By assigning unique dedicated uplink resources to each mobile device, the present invention can solve the problems and limitations of existing mobile devices and base station access request transmissions. To be precise, each mobile device is allocated Segments with different timeslot indexes and/or waveform indexes, where the waveforms of different indexes are orthogonal.

According to one aspect of the present invention, there is provided a method for wirelessly communicating a mobile unit. The method includes the steps of: transmitting an access request message on a wireless uplink resource dedicated to a specific mobile unit. Upload to the base station, where there is no need to transmit the identification of the specific mobile unit to the station. It is characterized in that, on the downlink response resource shared with other mobile units, it is detected from the base station on the wireless downlink. The received request response message used to indicate the specific mobile unit is transmitted to the base station on the shared uplink confirmation resource, and the confirmation message used to indicate receipt of the request response message is transmitted to the base station, wherein the The shared uplink confirmation resource includes multiple segments, which correspond to the segments of the shared downlink response resource used to receive the request response message; and transmit data services on the traffic channel allocated by the base station; The waiting time is shortened and the clusterability is improved. According to another aspect of the present invention, a method for a wireless communication base station is provided. The method includes the steps of: monitoring received access requests to detect at least one mobile unit An incoming call request on the uplink resource dedicated to the at least one mobile unit; confirming whether any request is received, and assigning a traffic channel to the at least one mobile unit requested, characterized in that, if it has been received At least one request, on the shared downlink slightly response resource, will be used A request response message identifying the at least one mobile unit of the request is transmitted to the at least one mobile unit of the request;

01121626.3 Firstly, it is determined whether on the shared uplink health path confirmation resource, a confirmation message is received from at least one mobile unit of the request, so as to indicate that the requested at least one mobile unit has received the request response message, wherein The uplink confirmation resource includes a plurality of segments, which correspond to the segments of the common downlink response resource used to transmit the request response message one-to-one; and if the confirmation message has been received, from at least one of the requested segments The mobile unit receives data services, in which the waiting time is shortened and the reliability is improved.

According to the present invention, the base station can identify the mobile device that has issued the access request from the dedicated uplink resource. Therefore, the mobile station identification number is not required in the uplink request message. Then, the mobile device can use the shared downlink The resource sends a request response message containing the mobile device identification number of the farmer to confirm receipt of the request.

The mobile device can send an acknowledgment on a shared uplink resource, indicating that a downlink request response message is received. Description of the drawings Figure 1 is a graphical representation of a segment used to describe the present invention.

Figures 2A and 2B are graphical representations in the prior art for sending a request for an uplink mobile device based on contention. Figure 3 shows the structure of a base station and a mobile device that can be used in the present invention in a simple block diagram form.

Figures 4A and 4B are graphical representations for contention-free sending of uplink mobile device requests, and including a shared downlink source for sending a request response message describing the present invention. Figure 5 is used to describe one aspect of the present invention Graphical representation of sending a downlink path request response message confirmation on a shared uplink resource. Figure 6 is a flowchart illustrating the various steps in the process of the base station detecting that the mobile device has received the request and sending the downlink request response message. · Figure 7 is a flowchart illustrating the various steps in the process of a mobile device sending a request, receiving a request response message, and sending a confirmation according to the present invention.

01121626.3 First specific embodiment Fig. 3 shows the structure of the base station and mobile equipment that can be used in the present invention in the form of a simple block diagram. To be precise, FIG. 3 shows a base station 301 and a mobile device 302. It should be noted that although only the mobile device 302 is shown in the figure, a typical situation is that a mobile device group containing multiple mobile devices shares the base station 301. In this example, the base station 301 includes a transmitter 303, a receiver 304, and a controller 305 for sending and receiving wireless messages through the antenna 306. The controller 305 is used to control the operation of the transmitter 303 and the receiver 304 according to the present invention. Similarly, in this example, the mobile device 302 includes a transmitter 307, a receiver 308, and a controller 309 for sending and receiving wireless messages through the antenna 310. The controller 309 is used to control the operation of the transmitter 307 and the receiver 308 according to the present invention. Figures 4A and 4B send uplink mobile device requests for contention-free, and include shared downlink resources for sending descriptions of the present invention Graphical representation of the request response message. To be precise, in order to eliminate the problem of conflicts between mobile device requests on uplink resources, each mobile device allocates a dedicated uplink resource. This dedicated uplink resource is not shared with any other mobile devices. To this end, as shown in Figure 1, each mobile device is assigned a segment with a different time slot index and/or waveform index, where the waveforms of different indexes are orthogonal Figure 4A As shown in and 4B, this is achieved by allocating two different time slots for mobile device #1 and mobile device #2.

After receiving the mobile device request, the base station 301 can identify which mobile device 302 sent the request. This is achieved by applying the dedicated uplink resource allocated to the mobile device 302 to send the uplink request. Next, the base station 301 A request response message can be sent on the downlink. The message can include the identification of the mobile device 302 that sent the uplink request to confirm the request. It should be noted that the downlink resource used to send the request response message is not dedicated to any particular It is a resource shared by all mobile devices sharing the base station 301. It should also be pointed out that the segments used to send the downlink path request response message from the base station 301 need not be mapped one by one to the ones used to send the mobile device 302. The dedicated segment of the uplink request. As shown in FIG. 4A, after receiving the request from the mobile device #1, the base station 301 sends back a request response message in the downlink segment. In the other as shown in FIG. 4B

01121626.3 In the first case, after receiving the request message from mobile device #2, the base station 301 sends back the request response message in the same downlink segment that sent the request response message to mobile device #1. Figure 5 is used to describe this An aspect of the invention is a graphical representation of sending a downlink request response message acknowledgment on a shared uplink resource. For a given amount of total uplink resources, the amount of dedicated resources for a single mobile device is usually less than that available in the prior art contention-based implementation. Therefore, the dedicated mobile device requests to be sent in the wireless channel May not be clumped. Especially if the uplink mobile device request is not received by the base station 301, then the mobile device request must be retransmitted. This situation is very similar to the touch-and-fast laziness in the contention-based implementation. On the other hand, the false alarm error ( That is, the base station thinks that it has received a mobile device request, but the request was not actually sent) will also cause a waste of system resources.

In order to improve clusterability without introducing any large amount of resource overhead, an additional confirmation segment is added to each downlink request response message in the uplink. As shown in Figure 5, the downlink request response segment follows the uplink Link Confirmation Segment · Therefore, the confirmation segment is not exclusive to any specific mobile device, but is shared by all mobile devices. Any mobile device sends a request in its dedicated uplink segment, and a request response message in one of them If you detect your own mark number in the segment, you can send confirmation in the corresponding confirmation segment. Therefore, each segment on the shared uplink resource has a one-to-one correspondence with the response message. Obviously, although the confirmation segment is shared, if two mobile devices both send requests and you detect their logo numbers in the same request response message segment, a collision will occur. In this unfortunate situation, at least one of the mobile devices must decode the request response message error. The advantage of applying shared resources to send the confirmation is that the confirmation segment can have enough energy to ensure the required legibility without causing any Large system resource overhead. Figure 6 is a flow chart illustrating the various steps in the process of the base station 301 detecting the reception of the mobile device request and sending the request response message. Therefore, step 601 enables the base station 301 to monitor the mobile devices request time slot·Step 602 performs a test to determine whether any mobile device requests are detected.If the test result of step 602 is No, the control returns to step 601, And repeat steps 601 and 602 should go to step 602 to generate a YES result. The YES result of step 602 indicates that a mobile device request is detected in the dedicated uplink resource. After that, step 603 makes the request response message in the downlink Road transmission · Inject children, request response cancellation

01121626.3 The second message may include the identification number of the mobile device that sent the request. Step 603 also allows the traffic channel to be allocated to the requesting mobile device. Next, in step 604, a test is performed to determine whether a confirmation is received from the mobile device that sends the response message to the stomach. If the test result in step 604 is NO, the allocated traffic channel is withdrawn by the base station 301, and the frustration is returned to Step 601, repeat steps 601-604 until step 604 produces a YES result. The YES result of step 604 indicates that the confirmation has been received from the mobile device of the destination of the request response message. Step 605 enables the base station to send from the requesting mobile device, such as mobile device 302 , Receiving the data service on the allocated service channel. Figure 7 is a flowchart illustrating the steps of each step in the process of sending a request, receiving a request response message, and sending a confirmation according to the present invention. The step 701 makes a mobile device ( For example, the mobile device 302) sends a request to a base station (for example, base station 301) on the uplink in its dedicated time slot. Next, step 702 performs a test to determine whether the request response message is shared downlink resources, that is, a downlink Channel time slot, a request response message from the base station 301 is received. If the test result of step 702 is NO, the control returns to step 701, and steps 701 and 702 are repeated until step 702 produces a YES result. That is, a request response message has been received in the shared downlink request response message time slot, which indicates that the base station 301 has received a request from this mobile device, that is, the mobile device 302. Thereafter, step 703 causes the mobile device 302 to send a Acknowledgement, indicating that the request response message was received in a shared acknowledgement time slot. Next, step 704 enables the mobile device 302 to send data services on the traffic channel allocated to it by the base station 301. The above-mentioned embodiments merely illustrate the principle of the present invention. In fact, those skilled in the art can design various methods and methods without exaggerating the spirit and scope of the present invention.

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