Method and device for service time division multiplexing

(54) Title: METHOD AND DEVICE FOR MULTIPLEXING SERVICE DIVISION (51) lnt.CI .: H04Q 11/00 (30) Unionist Priority: 12/02/2007 CN 2007 10084514.Χ (73) Holder (es) ): HUAWEI TECHNOLOGIES CO., LTD.

(72) Inventor (s): JUNWEI WANG; XIAOAN FAN; JIANGHUA LIU

Descriptive Report of the Invention Patent for METHOD AND DEVICE FOR MULTIPLEXING SERVICE DIVISION.

FIELD OF THE INVENTION

The present invention relates to the technical field of communications, specifically to a method and device for dividing the time of service multiplexing.

BACKGROUND OF THE INVENTION

Third generation partnership projects (3GPP) started a long-term evolution (LTE) of 3^The generation (3G) in 2005, and better support to increase the service specifications of operators and users is provided through developed universal terrestrial radio access (E-UTRA) and developed universal terrestrial radio access network (E-UTRAN) .

In an LTE system, downlink communication services can be divided into two categories, that is, a unidiffusion service and a multimedia diffusion multicast service (MBMS). The unicast service refers to a point-to-point service in which a data source sends the data to a user's device, and the MBMS refers to a point-to-point service to which a data source sends data for multiple user devices. The introduction of MBMS is to share resources on a network; a network includes a core network and a radio access network and serves as much multimedia user equipment that has the same specifications while using minimal resources. In the radio access network, MBMS can multi-broadcast and broadcast messages with simple texts at a low rate and multi-broadcast and broadcast multimedia services at a higher rate over a common transport channel and carrier common radio.

For MBMS, 3GPP specification 25,814 supports two cell transmission modes, one of which is a multiple cell transmission mode, that is, multiple cells simultaneously send the MBMS with the same frequency resource, and the other of which it is a single cell transmission mode, that is, a single cell sends the MBMS without considering the transmission of other cells.

MBMS data transmission modes include two modes, one of which is a mixed carrier (MC) mode, that is, MBMS and the unidiffusion service share the same carrier to transmit data, and the other of which is a dedicated carrier (DC) mode, that is, MBMS itself uses a carrier to transmit data. In the case of MC mode, the MBMS and the unicast service are in time division multiplexing, and the two services are a subframe level time division multiplexing decided by a 3GPP meeting, that is, each service occupies at least one subframe. If a base station does not send a signal to inform the use of each subframe, the unicast service user equipment and MBMS user equipment will attempt to read their own service information through the entire transmission time, thus wasting electrical power from user equipment. If an information bit is sent to each subframe to indicate usage, for example, a bit has two states, 0 and 1, which correspond to the two services respectively, then the amount of information required is very large.

In addition, an orthogonal frequency division multiplexing (OFDM) technology is employed in the LTE downlink. OFDM technology divides a given channel into multiple orthogonal subchannels in a frequency domain, and allows the subcarrier spectra to be partially overlapping. As long as a mutual orthogonality is achieved between the subcarriers, data signals can be obtained. In the operation of an OFDM system, symbols are first subjected to a serial / parallel conversion to form multiple low-rate sub-stream, each data stream occupies a sub-carrier, the mapping of sub-sub-stream to sub-carrier can be achieved through an inverse discrete Fourier transform (IDFT) or a fast Inverse Fourier transform (IFFT), and a cyclic prefix (CP) as a guard interval is applied, which greatly reduces or even eliminates inter-symbol interference, and ensures orthogonality between multiple channels, thereby greatly reducing inter-channel interference.

In the subframe which sends the unicast service or a single cell transmission MBMS, the length of the CP only needs to meet the specifications of the server cell. In the subframe of a multi-cell transmission MBMS, the signal must pass through a longer transmission path, in which case a longer CP is required to overcome inter-symbol interference and the user's equipment can successfully demodulate a subframe only after knowing the CP length of the subframe.

To summarize, the base station cannot effectively report the transmission time of various services and the CP length of each subframe in the case of time division multiplexing for multiple services in the prior art.

SUMMARY OF THE INVENTION

Various embodiments of the present invention provide a method and device for a multiplexing of service time division, a method and a device for transmitting a service, and a base station, which should solve the problem that a base station cannot effectively inform the transmission time of various services and the CP length of each subframe in the case of time division multiplexing for multiple services in the prior art.

A method for multiplexing time of service split includes: selecting part or all of the radio frames in a time unit as specific radio frames; and select part or all of the subframes in the specific radio frames as specific subframes to send a specific service.

The specific service is a multimedia broadcast multicast service (MBMS), or a unidifusion service, or one or more than one type of service transmitted in broadcast or multicast mode.

A method for dividing the time of service multiplexing includes: dividing a unit of time into at least one Type 1 subunit and selecting a part or all of the Type 1 subunits as specific Type 1 subunits; divide each Type n subunit into at least one Type n + 1 subunit, where 1 <n <N, and n and N are natural numbers, select part or all Type n + 1 subunits into specific Type n subunits as subunits specific Type n + 1, specific Type N subunits being used to send a specific service; send the service according to the time division multiplexing mode above; and send the position information for the N types of specific subunits.

A method for transmitting a service includes: selecting part or all of the radio frames in a unit of time as specific radio frames; select part or all of the subframes in the specific radio frames as specific subframes to send a specific service; send the service according to the time division multiplexing mode above; and send position information for specific radio frames and / or position information for specific subframes.

The time unit comprises several radio frames, each of which contains R subframes that can be allocated to the specific service, where R is a natural number.

A time-division multiplexing device includes: a radio frame selection unit, configured to select part or all of the radio frames in a time unit as specific radio frames; and a subframe selection unit, configured to select part or all of the subframes in the specific radio frames as specific subframes to send a specific service.

A device for transmitting a service includes: a time division multiplexing unit, configured to select part or all of the radio frames in a time unit as specific radio frames; and selecting part or all of the subframes in the specific radio frames as specific subframes to send a specific service; and a transmission unit, configured to send the service according to a time division multiplexing mode determined by the above time division multiplexing unit and sending the position information of the specific radio frames and / or the position information specific subframes.

A base station includes; a device for transmitting a service, configured to select a part or all of the radio frames in a unit of time as specific radio frames, select a part or all of the subframes in the specific radio frames as specific subframes to send a specific service, send the service according to the time division multiplexing mode above, and send position information for specific radio frames and / or position information for specific subframes.

The modalities of the present invention provide a service time division multiplexing mode through a technical proposal in which a part or all radio frames in a time unit are selected as specific radio frames, and a part or all subframes in specific radio frames are selected as specific subframes to send a specific service which is the multimedia broadcast multicast service, or the unidiffusion service, or one or more than one type of service transmitted in the multimedia broadcast multicast mode; moreover, in the modalities of the present invention, through a technical proposal in which the services are sent according to the time division multiplexing mode, the position information of the specific radio frames and / or the position information of the subframes specifics are also sent, the time unit includes several radio frames, and the radio frames include one or more subframes that may be allocated to the specific service, it is achieved that when the base station sends multiple services to the user's equipment through the time division multiplexing mode, the user's equipment for various services can accurately obtain the transmission time of the services required by the user's own equipment, thus obtaining the service data required by the user's own equipment, thereby saving electrical energy from the user's equipment. Meanwhile, the present invention realizes that the user's equipment can accurately know the CP length of each subframe by sending the CP length information of the specific subframes in the time unit, thus demodulating the subframes exactly.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is a schematic flowchart of a method for multiplexing the service time division of the present invention;

Figure 2 is a schematic flow chart of a method for transmitting the service of the present invention;

Figure 3 is a schematic flowchart of an embodiment of a method for transmitting the service of the present invention;

Figure 4 is a schematic diagram of a multiplexing mode of specific subframes and non-specific subframes in one embodiment of a method for transmitting the service of the present invention;

Figure 5 is a schematic diagram of transmission delay between information and service data in one embodiment and a method for transmitting the service of the present invention;

Figure 6 is a schematic flow chart of a method for transmitting the service according to an embodiment of the present invention;

Figure 7 is a schematic flow chart of a method for transmitting the service according to an embodiment of the present invention;

Figure 8 is a schematic flow chart of a method for transmitting the service according to an embodiment of the present invention;

Figure 9 is a schematic flow chart of a method for transmitting the service according to an embodiment of the present invention;

Figure 10 is a schematic structural diagram of a service time division multiplexing device according to an embodiment of the present invention;

Figure 11-A is a schematic structural diagram of a device for transmitting the service according to an embodiment of the present invention;

Figure 11-B is a schematic structural diagram of a device for transmitting the service according to an embodiment of the present invention;

Figure 12-A is a schematic structural diagram of a transmission unit in the form of a device for transmitting the service of the present invention;

Figure 12-B is a schematic structural diagram of a transmission unit in the form of a device for transmitting the service of the present invention; and

Figure 13 is a schematic structural diagram of a base station according to an embodiment of the present invention. DETAILED DESCRIPTION

In the case of multiple services time division multiplexing, in order to let the user's equipment know that a subframe is used by which service, the modalities of the present invention provide a service time division multiplexing method and device, as well as a method and device to transmit the service.

A unit of time is divided into at least one Type 1 subunit, and some or all of the Type 1 subunits are selected as specific Type 1 subunits. Each of the Type n subunits is divided into at least one Type n + 1 subunit, where 1 <n <N and N and N are natural numbers. Part or all of the Type n + 1 subunits in the specific Type n subunits are selected as specific Type n + 1 subunits, and the Type N subunits are used to send a specific service. The service is sent according to the time division multiplexing mode above. Position information for N types of the specific Type n subunits is sent. That is, in the embodiments of the present invention, the service is multiplexed in the way of dividing a unit of time into N layers by dividing a unit of time into Type 1 subunits, dividing each of the Type 1 subunits into Type 2 subunits , and dividing each of the Type 2 subunits into Type 3 time subunits and so on.

Referring to figure 1, in a mode of dividing a unit of time into two layers, a method for multiplexing the division of service time includes the following steps;

In step S101, part or all of the radio frames in a unit of time are selected as specific radio frames.

The size of the time unit can be changed, that is, the number of radio frames included in the time unit can be changed.

In step S102, part or all of the subframes in the specific radio frames are selected as specific subframes to send a specific service.

The specific service is a multimedia broadcast multicast service, or a unicast service, or one or more than a service broadcast in broadcast or multicast mode. Specifically, when the specific service is the multimedia broadcast multicast service or the unidifusion service, the present invention is to solve the problems in the prior art.

The allocation of specific radio frames in the time unit can be predefined according to the characteristics of the specific service. For example, both base stations and user equipment pre-store a mapping table or mapping rules. Therefore, when the number of specific radio frames in the time unit is given, the base stations and user equipment can know which radio frames are specific radio frames by referring to the mapping table or calculating according to the rules of mapping. For example, the mapping rule may be that specific radio frames are evenly allocated. In this way, the specific positions of the radio frames can be determined if the number or interval of the radio frames is determined, thus simplifying the multiplexing design. The mode, like an explicit signal, can be used instead of using the predetermined mode.

In order to further simplify the multiplexing project, the allocation of specific subframes may be required to be the same for each specific radio frame. In this way, the specific positions of all specific subframes in the time unit can be determined only by determining the positions of specific subframes in a specific radio frame. The allocation of specific subframes may not necessarily be the same.

In addition, the allocation of specific subframes to the radio frame to which the specific subframes belong may be required to be predefined without the need for notification. For example, both base stations and user equipment pre-store the mapping table or mapping rules, therefore, when the number of specific subframes in a specific radio frame is given, the base stations and equipment Users can obtain which subframes are specific subframes by consulting the mapping table or calculating according to the mapping rules. For example, specific subframes may be required to be uniformly allocated or allocated to an approximately equal interval on the radio frame to which the specific subframes belong. The specific positions of specific subframes can be determined only by determining the number or range of specific subframes on a specific radio frame. Uniform allocation and roughly uniform allocation are hereinafter referred to as uniform allocation. The mode such as explicit signaling instead of the predetermined mode, can be employed.

Referring to figure 2, a method for transmitting the service of the present invention includes the following steps:

In step S201, part or all of the radio frames in a time unit are selected as specific radio frames.

The time unit includes several radio frames, each radio frame contains R subframes that can be allocated for the specific service, and R is a natural number.

In step S202, part or all of the subframes in the specific radio frames are selected as specific subframes to send the specific service.

The specific service can be a multimedia broadcast multicast service, or a unicast service, or one or more than one type of service transmitted in broadcast or multicast mode. Specifically, when the specific service is the multimedia broadcast multicast service or the unidiffusion service, the present invention is to solve the problems of the prior art.

The allocation of specific radio frames in the time unit can be predefined according to the characteristics of the specific service. For example, both base stations and user equipment pre-store a mapping table or mapping rules, therefore, when the number of specific radio frames in the time unit is given, the base stations and the equipment of the Users can obtain which radio frames are specific radio frames by consulting the mapping table or calculating according to the mapping rules. For example, the mapping rules may be that specific radio frames are evenly allocated. In this way, the specific positions of the radio frames can be determined if the number or interval of the radio frames is determined, thus achieving the purpose of simplifying the multiplexing project. The mode, such as an explicit signaling instead of the predetermined mode, can be employed.

In order to further simplify the multiplexing project, the allocation of specific subframes may be required to be the same for each specific radio frame. In this way, the specific positions of all specific subframes in the time unit can be determined only by determining the positions of specific subframes in a specific radio frame.

In addition, the allocation of specific subframes in the radio frame to which the specific subframes belong may be required to be predefined without the need for notification. For example, both base stations and user equipment pre-store the mapping table or mapping rules, therefore, when the number of specific subframes in a specific radio frame is given, the base stations and equipment Users can obtain which subframes are specific subframes by consulting the mapping table or calculating according to the mapping rules. For example, specific subframes may be required to be uniformly allocated or allocated to an approximately equal interval on the radio frame to which the specific subframes belong. The specific positions of specific subframes can be determined only by determining the number or range of specific subframes on a specific radio frame. Uniform allocation and roughly uniform allocation are hereinafter referred to as uniform allocation. The mode, like the explicit signaling instead of the predetermined mode, can be used.

In step S203, the service is sent according to the time division multiplexing mode above.

In step S204, position information for specific radio frames and / or position information for specific subframes is sent.

Preferences the position information of specific radio frames is the number or range of specific radio frames in the time unit.

Preferred position information for specific subframes is the number or range of specific subframes in each of the specific radio frames.

Preferences, the position information of the specific radio frames and / or the position information of the specific subframes are transmitted over broadcast channels.

The position information of the specific radio frames is hereinafter referred to as first information, and the position information of specific subframes is hereinafter referred to as second information.

The broadcast channels include a main broadcast channel, and a secondary broadcast channel and a dynamic broadcast channel. The first information is transmitted over any of the three broadcast channels, and the second information is transmitted over any of the three broadcast channels.

Preferably, the second information is transmitted over the main broadcast channel and the first information is transmitted over the secondary broadcast channel or the dynamic broadcast channel.

The broadcast channels are transport channels, the three transport channels are required to be mapped to one or more physical channels for transmission. For example, the main broadcast channel is mapped to a physical main broadcast channel, the dynamic broadcast channel is mapped to a physical shared data channel, and the secondary broadcast channel is mapped to a physical secondary broadcast channel or the physical shared data channel.

Preferably, the method for transmitting the service further includes sending the CP length information for the specific subframes in the time unit.

Preferably, the CP length information is transmitted over the broadcast channel.

Taking the MBMS, which is the specific service, and the unicast service time division multiplexing as an example, if the service in all MBMS subframes (the specific subframes that send the MBMS) is transmitted in multiple cells, then all MBMS subframes use long CPs; if the MBMS transmitted in a single cell is sent in unidiffusion subframes, then the first information and the second information are also used to inform the length of the CPs, that is, all MBMS subframes use the

Long CPs, and all unidiffusion subframes use short CPs.

If the service in the MBMS subframes is possibly transmitted in multiple cells, and is also possibly transmitted in a single cell, then the service in all MBMS subframes is supposed to be transmitted in multiple cells or transmitted in a single cell in the time, so the method for transmitting the service still includes sending the CP length information for specific subframes in the time unit, and the length information is hereinafter referred to as third information. That is, a user can obtain the CP length of each subframe in the entire time unit just by increasing a signaling bit to inform the MBMS subframes of the use of the long or short CP. For example, the signaling bit is set to 0, which represents the long CP, and the signaling bit is set to 1, which represents the short CP, and vice versa, the signaling bit is set to 1, which represents the long CP, and the signaling bit is set to 0 which represents the short CP.

Mode 1:

Referring to figure 3, a method for transmitting a service of the present invention includes the following steps:

In step S301, part or all of the radio frames in a unit of time are selected as specific radio frames.

In step S302, part or all of the subframes in the specific radio frames are selected as specific subframes to send a specific service.

In step S303, the service is sent according to the time division multiplexing mode above.

In step S304, the position information of the specific radio frames is sent by sending the value of a signal m, and 0 <m <M.

S successive radio frames form a unit of time, where S = 2^m, and the value of M can be 10 or other numeric values.

The specific radio frames are evenly allocated, and 2^m is used to represent the number of specific radio frames in the time unit or to represent the range of several specific radio frames. If 2^m is used to represent the number of specific radio frames in the time unit, then the range of several specific radio frames is 2^{M m}, and vice versa, if 2^m is used to represent the range of several specific radio frames so the number of specific radio frames in the time unit is 2^{M m}, where 0 <m <M.

In step S305, the position information for the specific subframes is sent by sending the value of an Np signal, where 0 <Np <R and Np represents the number of specific subframes in the specific radio frame.

A specific subframe does not exist in the entire time unit when Np = 0, in this case, the value of m is not required to be indicated.

R represents that the radio frame includes R subframes that can be allocated to the specific service. A radio frame occupies 10 ms. When all subframes can be allocated to the specific service, the value of R is temporarily determined to be 10 in the LtE system. When some subframes cannot be used to send the specific service, for example, when the subframes in which a synchronization channel (SCH) is located can only be used for the unicast subframes, the value of R is the number of other subframes on the radio board. For example, when two subframes in a radio frame have SCH, the R value is 8.

In the present modality, the allocation of specific subframes is the same for each specific radio frame.

It is described how to determine which subframes in a specific radio frame are specific subframes after knowing the Np value by taking an approximate uniform allocation of the specific subframes in the specific radio frame to which the specific subframes belong as an example:

A simple way is as follows:

Subframes with a serial number of r are specific subframes, and the value of r is calculated using the following formula:

_10_

Np r = r₀+ (s) modlO +

<img file="BRPI0808069B1_D0001.tif" />

0, l, ..., Np-l

In the formula, ro is the position of a specific first subframe in the specific radio frame, which is expressed by the subframe's serial number. Generally, ro = O can be adopted.

When the value of R is not the number of all subframes in a radio frame, after knowing the value of Np, the positions of specific subframes can also be determined by the method above, but the serial number of the subframes in the formula is the serial number of other subframes.

Figure 4 is a schematic diagram of a mode of multiplexing specific subframes and non-specific subframes in the present embodiment. For example, an m = 2 notification represents the range of specific radio frames in 4 radio frames, and a first radio frame of the time unit includes the specific subframes. An Np = 4 notification represents that the specific radio frame has 4 specific subframes which are uniformly allocated, and the first subframe is a specific subframe, that is, r_O= O.

The information sent in step S304 is the first information, the information sent in step S305 is the second information, and the second information is transmitted on the broadcast channels.

The broadcast channels include a main broadcast channel, a secondary broadcast channel and a dynamic broadcast channel. The first information is transmitted over any of the three broadcast channels, and the second information is transmitted over any of the three broadcast channels.

Preferably, when the first information and / or the second information is transmitted over the secondary broadcast channel, the secondary broadcast channel needs to be predefined to be placed in the long CP subframe, or placed in the short CP subframe.

Preferably, when the first information and / or the second information is transmitted over the dynamic diffusion channel, the dynamic diffusion channel is determined to be placed in the long CP subframe, or placed in the short CP subframe.

When the first information and the second information are transmitted over the main broadcast channel, as the number of bits accommodated in the main broadcast channel is limited and is generally confirmed as 40-50 bits, all position information cannot be placed on the main broadcast channel, then the information is required to be divided into multiple parts, each part is transmitted over the main broadcast channel. A main broadcast channel appears once in each radio frame. Therefore, position information requires time transmission of multiple radio frames, and this time is a cycle of transmission of information T. Figure 5 is a schematic diagram of transmission delay between position information and service data. in the present modality. The signal is repeatedly sent in a unit of time. In a first transmission cycle of a time unit, the position of specific subframes is informed by the signaling of the last transmission cycle of the previous time unit, therefore, the signaling content has an advanced time T that corresponds to the position of specific subframes indicated by the signaling content.

Since the value range of m is 0 &lt;m &lt;M, and the value range of Np is 0 &lt;Np &lt;R, the number of bits required to transmit the position information is log2 (M + 1) + log₂(R + 1).

The user equipment determines the positions of specific radio frames in the time unit according to the value of m, that is, the number or range of specific radio frames; determines the positions of specific subframes according to the value of Np, that is, the number or range of specific subframes, reads the specific service on the subframes which transmit the specific service, and reads other services on the subframes which transmit other services.

Mode 2:

Referring to figure 6, a method for transmitting a service of the present invention includes the following steps:

In step S601, part or all of the radio frames in a unit of time are selected as specific radio frames.

In step S602, part or all of the subframes in the specific radio frames are selected as specific subframes to send a specific service.

In step S603, the service is sent according to the time division multiplexing mode above.

In step S604, the position information of the specific radio frames is sent by sending the value of a signal m, where 0 &lt;m &lt;M + 1, em = M + 1 represents that the entire time unit does not have a specific subframe.

S successive radio frames form a unit of time, S = 2^m, and the value of M can be 10 or other numeric values.

The specific radio frames are evenly spaced, and 2^m is used to represent the number of specific radio frames in the time unit or to represent the range of several specific radio frames. If 2^m is used to represent the number of specific radio frames in the time unit, then the range of several specific radio frames is 2^M'^m, and vice versa, if 2^m is used to represent the range of several specific radio frames, then the number of specific radio frames in the time unit is 2^M'^m, where 0 &lt;m &lt;M + 1, m = M + 1 represents that the entire time unit does not have a specific subframe.

In step S605, the position information of the specific subframes is sent by sending the value of an Np signal, where 1 &lt;Np &lt;R, and Np represents the number of specific subframes in the specific radio frame; and R represents that the radio frame contains R subframes that can be allocated to the specific service.

When m = M + 1, the value of Np is not required to be indicated.

In the present modality, the allocation of specific subframes is the same for each specific radio frame.

After knowing the Np value, the method for determining the position of specific subframes is the same as that of modality one.

The information sent in step S604 is the first information, the information sent in step S605 is the second information, and the first information and the second information are transmitted over the broadcast channels. The specific mode of transmission is the same as that of mode one.

Since the value range of m is 0 &lt;m &lt;M + 1, and the value range of Np is 1 &lt;Np &lt;R, the total number of bits to transmit the position information is [log₂(M + 2) + log₂R].

Mode 3:

The method for transmitting a service of the present invention includes the following steps:

In step S701, part or all of the radio frames in a unit of time are selected as specific radio frames.

In step S702, part or all of the subframes in the specific radio frames are selected as specific subframes to send a specific service.

In step S703, the service is sent according to the time division multiplexing mode above.

In step S704, position information for specific radio frames and position information for specific subframes are sent by sending the value of a common A signal.

S successive radio frames form a unit of time, where S = 2^M, 2⁰¹ represents the number of specific radio frames in the time unit or represents the range of several specific radio frames, Np represents the number of specific subframes in the specific radio frame, and R represents that the radio frame contains R subframes that can be allocated for specific service.

In order to additionally save signaling, the position of specific subframes can be indicated by adopting a common signaling indication method, that is, the values ​​of m and Np are sent by sending signaling A. The specific methods are as follows:

If 0 &lt;m &lt;M, 0 &lt;Np &lt;R, and R &lt;M + 1, then f 0, when Np = 0 [(M + l) (Np-l) + (m + l), When 0 &lt;Np &lt;R

In the formula, Np = 0 represents that the entire time unit does not have a specific subframe.

If 0 &lt;m &lt;M, 0 &lt;Np &lt;R, and M + 1 &lt;R, then

0, when Np = 0

Rm + Np, when 0 &lt;Np &lt;R

In the formula, Np = 0 represents that the entire time unit does not have a specific subframe.

If 0 &lt;m &lt;M + 1, 1 &lt;Np &lt;R, and R &lt;M + 1, then _ 0, when m = M + 1 [(M + l) (Np-l) + (m + l), when 0 &lt;m &lt;M + 1

In the formula, m = M + 1 represents that the entire time unit does not have a specific subframe.

If 0 &lt;m &lt;M + 1, 1 &lt;Np &lt;R, and M + 1 &lt;R, then

THE _{= &lt;} 0, when m = M + 1 [Rm + Np, when 0 &lt;m &lt;M + 1

In the formula, m = M + 1 represents that the entire time unit does not have a specific subframe.

In the case of R = M + 1, any of the above expression methods can be used.

It will now be described how to determine the value of m and Np after knowing the value of signaling A:

Two integer variables X and Y are supposed to be given, where ai &lt;X &lt;a₂, bi &lt;Y &lt;b₂ and the₂-ai &lt;b₂-B!.

Function A is obtained from the following formula:

A = (b2-b1 + 1) (X-a1) + (Y-b1 + 1) (5)

The values ​​of X and Y can be solved using the following formulas if the value of A is given:

Y = A mod (b2-b1 + 1) (7)

When encoding signaling A uses formula (1) or (3), Np = X, m = Y, and the values ​​of Np in can be obtained using formulas (6) and (7).

When encoding signaling A uses formula (2) or (4), m = X, Np = Y, and the values ​​of Np in can be obtained using formulas (6) and (7).

It can be seen that when the signal sent is A, the number of bits required to transmit the position information is [log₂[(M + 1) R + 1]] which is possibly less than the amount of information [log₂(M + 1) + log₂(R + 1)] or [log₂(M + 2) + log₂R] to send the signaling me Np respectively.

For example, when R = 10, and M = 8, 9, 10, 11, 16, 17, etc., 1 bit can be easily saved by common signaling. For example, when M = 1 and 0 &lt;A &lt;121, A can be expressed by 7 bits while m and Np are respectively expressed by 4 bits. Therefore, 1 bit of information can be saved by adopting the common signaling.

In the present modality, specific radio frames are uniformly allocated.

In the present modality, the allocation of specific subframes is the same for each specific radio frame.

After knowing the Np value, the method for determining the position of specific subframes is the same as that of modality one.

The information sent by signaling A includes the first information and the second information which is transmitted on the broadcast channels. The specific mode of transmission is exactly the same as that of mode one.

Mode 4:

Referring to figure 8, a method for transmitting a service of the present invention includes the following steps:

In step S801, part or all of the radio frames in a unit of time are selected as specific radio frames.

In step S802, part or all of the subframes in the specific radio frames are selected as specific subframes to send a specific service.

In step S803, the service is sent according to the time division multiplexing mode above.

In step S804, the position information of the specific radio frames is sent by sending the value of a signaling m, where 0 &lt;m &lt;M + 1, em = M + 1 represents that the entire time unit does not have a specific subframe.

S successive radio frames form a unit of time, S = 2^m, and the value of M can be 10 or other numeric values.

The specific radio frames are evenly spaced, and 2^m is used to represent the number of specific radio frames in the time unit or to represent the range of several specific radio frames. If 2^m is used to represent the number of specific radio frames in the time unit, then the range of several specific radio frames is 2^{M m}, and vice versa, if 2^m is used to represent the range of several specific radio frames, then the number of specific radio frames in the time unit is 2^{M m}, where 0 &lt;m &lt;M + 1, m = M + 1 represents that the entire time unit does not have a specific subframe.

In step S805, position information for specific subframes is sent by sending the value of an Np signaling, where 0 &lt;Np &lt;R, and Np represents the number of specific subframes in the specific radio frame in which the signaling is located; and R represents that the radio frame contains R subframes that can be allocated to the specific service.

In the present modality, the allocation of specific subframes is the same for each specific radio frame.

The information sent in step S804 is the first information, the information sent in step S805 is the second information, and the first information and the second information are transmitted on the broadcast channels. The specific mode of transmission is the same as that of mode one.

Preferably, the second information is transmitted over the main broadcast channel, and the first information is transmitted over the secondary broadcast channel or the dynamic broadcast channel.

The following paragraphs describe an example that the first information is transmitted over the secondary broadcast channel and the second information is transmitted over the broadcast channel.

The user's equipment receives the main broadcast channel first to obtain the Np value, thus knowing the CP length of each subframe in the radio frame in which the main broadcast channel is located. If the current radio frame includes the secondary broadcast channel, then the user's equipment can resolve the value of m, otherwise the user's equipment successively receives and checks the main broadcast channel until the secondary broadcast channel is found, and the value of m is resolved.

When Np = 0, the user equipment can obtain the position information of the specific subframes in the time unit by combining the value of m. When Np = 0, m = M + 1 indicates that the time unit does not have a specific subframe, and thus the user's equipment also obtains service information so that each subframe in the time unit is used. When Np = 0, if m = M + 1, the user's equipment can obtain the position of the radio frame NP = 0 according to the value m, and read the value of Np on the main broadcast channel in such a frame. thus obtaining the position information of the specific subframes in the time unit.

It should be noted that Np can indicate the number of specific subframes in any designated radio frame. For example, Np can indicate the number of specific subframes in the first or several radio frames following the radio frame in which Np is located.

The user's equipment can obtain the number of specific subframes on the designated radio board after receiving the Np value. Then the user's equipment can obtain the CP length of each subframe in the radio frame. Then, the procedures such as obtaining the value of m, checking if the Np is zero, etc., by the user's equipment are exactly the same as those of the method above. Finally, the user equipment can obtain non-zero values ​​of Np in, and thus obtain the position of specific subframes in the time unit.

Preferably, the CP length information is transmitted together with the Np value on the same channel.

Mode 5:

Referring to figure 9, the method for transmitting a service of the present invention includes the following steps:

In step S901, part or all of the radio frames in a unit of time are selected as specific radio frames.

In step S902, part or all of the subframes in the specific radio frames are selected as specific subframes to send a specific service.

In step S903, the service is sent according to the time division multiplexing mode above.

In step S904, position information for specific radio frames is sent by sending the value of an F signal. When the number of specific radio frames in the time unit is greater, the time unit is divided into several time subunits. F represents the position information of specific radio frames in the time subunits . And, the position information of specific radio frames in different time subunits is the same. When the number of specific radio frames in the time unit is less, F represents the position information of the specific radio frames in the time unit.

The present invention can be incorporated in many different forms as follows, but should not be considered as limited to the modalities presented here.

S successive radio frames form a unit of time, where S = 2^m, and the value of M can be 10 or other numeric values. The time unit is divided into 2^{M M0} subunits of time, and each subunit of time consists of 2^M0 successive radio frames, and MO is the positive integer less than M.

In step S904.1 (not shown), when the number of specific radio frames in the time unit is greater than or equal to 2^M'^M0, F represents the position information of specific radio frames in the time subunit.

For example, F can represent a Fq bitmap of radio frames in the time subunit, Fq consists of 2^M0 bits, each bit corresponds to a radio frame, and represents whether the corresponding radio frame is allocated to the specific service or not with two states which are 0 and 1.

Another example is that F can represent the Fp number of radio frames in the time subunit, and 0 &lt;Fp &lt;2^M°. The specific radio frames in the same time subunit are allocated according to a predefined rule, for example, a successive allocation or a uniform allocation. If Fp specific radio frames are of approximately uniform allocation in the time subunit to which the specific radio frames belong, the method for determining the position of the radio frames is similar to the method for determining the specific subframes after knowing the Np value in mode one. If Fp specific radio frames are consecutively allocated to the time subunit to which the specific radio frames belong, then the positions of the specific radio frames can be determined according to a starting position f₀ the Fp specific radio frames and the Fp value. The starting position f₀ can be pointed out or informed by signage, specifically, f₀ can be set to 0.

In step S904.2 (not shown), when the number of specific radio frames in the time unit is less than 2^M'^M0, F represents the position information of the specific radio frames in the time unit.

Example 1, F can represent a bitmap Gq of the time subunits in the time unit, Gq consists of 2^{M M0} bits, each bit corresponds to a subunit of time, and represents whether the corresponding subunit of time includes a specific radio frame or not with two states which are 0 and 1. The positions of the specific radio frames are identical in several subunits of time to which the specific radio frames respectively belong, and the positions can be pointed out or informed by signaling.

Example 2, can represent the Gp number of the specific radio frames in the time unit, 0 &lt;Gp &lt;2^MM° 2^M'^M0, and the allocation rules for specific radio frames can be pointed out or informed by signaling. The following paragraphs provide three examples of allocation rules pointed out.

(1) . When Gp specific radio frames are intended to be allocated consecutively in the time unit, the positions of the specific radio frames can be determined according to a starting position g₀ successive specific Gp radio frames and the Gp value. The start position go can be pointed or informed by signaling, specifically, g₀ can be set to 0.

(2) . When Gp specific radio frames are intended to be allocated to Gp successive time subunits of the time unit, the positions of the time subunits that include the specific radio frames can be determined according to a starting position g'o of the Gp subunits successive periods and the Gp value. The start position g'o can be pointed or informed by the signaling, specifically, g'o can be pointed as 0. The positions of the specific radio frames are identical in the various time subunits to which the specific radio frames respectively belong. The position can be pointed out or informed by signaling. Specifically, the position can be a first radio frame in the subunit of time.

Example 3, F represents the number 2^m of the specific radio frames in the time unit, and in the time unit, the specific radio frames are evenly allocated or consecutively allocated. Or F represents the interval 2^m of the specific radio frames in the time unit, and the specific radio frames are evenly allocated.

If 2^m is used to represent the number of specific radio frames in the time unit, where 0 &lt;m &lt;MM₀ or 0 &lt;m &lt;MM_O, em = M-Mo is used to indicate that the entire time unit does not have a specific subframe, when specific radio frames are evenly allocated, the range is 2^{M m}; or vice versa if 2^m is used to represent the range of several specific radio frames, then the number of specific radio frames in the time unit is 2^{M m}, where Mo &lt;m &lt;M or Mo &lt;m &lt;M, em = Mo is used to represent that the entire time unit does not have a specific subframe.

In step S905, the position information of the specific subframes is sent by sending the value of an Np signal or the value of Nq, where Np represents the number of specific subframes in the specific radio frame and 0 &lt;Np &lt;R; R represents that the radio frame contains R subframes that can be allocated to the specific service; and Nq is a bitmap of the subframes in the specific radio frame. Specifically, Nq consists of R bits, each bit corresponds to an allocable subframe, and represents whether the corresponding subframe is allocated to the specific service or not with two states which are 0 and 1.

In the present modality, the allocation of specific subframes is the same for each specific radio frame.

After knowing the value of Np, if Np specific subframes are allocated to an approximately equal interval in the specific radio frame to which the specific subframes belong, the method for determining the positions of specific subframes is exactly the same as that of modality one. If Np specific subframes are consequently allocated in the specific radio frame to which the specific subframes belong, then the positions of the specific subframes can be determined according to a starting position ro of Np successive subframes and the value of Np, and the position starting point ro can be pointed or informed by signaling, specifically, ro can be pointed as 0.

The information sent in step S904 is the first information, the information sent in step S905 is the second information, and the first information and the second information are transmitted on the broadcast channels. The specific mode of transmission is the same as that of mode one.

Since the value range of m is 0 &lt;m &lt;M + 1, and the value range of Np is 1 &lt;Np &lt;R, the total number of bits to transmit the position information is [log₂(M + 2) + log₂R].

Mode six is ​​a multi-layered mode, and specifically is as follows: when the number of specific Type Tipo 'subunits in the time unit is greater than or equal to a limit, the value of no is determined, where 1 &lt; N '&lt;N, 1 &lt;no &lt;N, does not have at least one value, which represents that all of the Type no subunits in the Type no-1 subunit are the non-specific Type subunits and the position information of the subunits of Type Type n₀ specific messages are no longer sent. When the number of specific Type Ν 'subunits in the time unit is less than a limit, the value of n₀'is determined, where 1 &lt;no' &lt;N, no 'has at least one value, which represents that the Type no'-1 subunit is directly divided into at least one Type subunit no' + 1, and the information position of specific Type 'subunits are no longer sent. The Type 0 subunit is the unit of time, and the sizes of the Type n subunits do not change with previous operations.

For example, the unit of time is divided into 2^M‘^M0 Type 1 subunits, both M and Mo are non-negative integers, and Mo &lt;M. Each Type 1 subunit is divided into 2^M0 Type 2 subunits, Type 2 subunits are radio frames, and Type 3 subunits are subframes. Each Type 2 subunit is divided into at least one Type 3 subunit. In addition, the position information for specific Type n subunits is sent by sending the value of the F signal, where n = 1 or n = 2. When the number of specific Type 2 subunits in the time unit is greater than or equal to 2^M^M0, no = 1, and F represents a bitmap and / or a number and / or range of the specific Type 2 subunits in each Type 1 subunit. When the number of specific Type 2 subunits in the time unit is less than 2^m'^mo, no '= 2, and F represents a bitmap and / or a number and / or range of specific Type 2 subunits in the time unit. Position information for Type 3 subunits is sent by sending the value of the G signaling value, where G represents a bitmap and / or a number and / or range of specific Type 3 subunits in the Type 2 subunit specific to which specific Type 3 subunits belong.

The present invention further provides a device which corresponds to the service time division multiplexing method, a device which corresponds to the method for transmitting a service and a base station.

The service time division multiplexing device of the present invention includes a radio frame selection unit and a subframe selection unit.

The radio frame selection unit is configured to select part or all of the radio frames in a unit of time as specific radio frames.

The subframe selection unit is configured to select part or all of the subframes in the specific radio frames as specific subframes to send a specific service.

The device for transmitting a service of the present invention includes a time division multiplexing unit and a transmission unit.

The time division multiplexing unit is configured to select part or all of the radio frames in a time unit as specific radio frames; and select part or all of the subframes in the specific radio frames as specific subframes to send a specific service.

The transmission unit is configured to transmit the service according to a time division multiplexing mode determined by the above time division multiplexing unit and to send the position information of the specific radio frames and / or the position information of the specific subframes.

The base station of the present invention includes a service transmission device.

The service broadcast device is configured to select a part or all of the radio frames in a unit of time as specific radio frames, select a part or all of the subframes in the specific radio frames as specific subframes to send a specific service, send the service according to the time division multiplexing mode above, and send position information for specific radio frames and / or position information for specific subframes.

The following paragraphs provide for various modalities of the devices of the present invention.

Mode 6:

Referring to figure 10, the service time division multiplexing device 91 according to an embodiment of the present invention includes a radio frame selection unit 911 and a subframe selection unit 912.

The radio frame selection unit 911 is configured to select part or all of the radio frames in a time unit as specific radio frames.

The subframe selection unit 912 is configured to select a part or all subframes on specific radio frames as specific subframes to send a specific service;

The specific service is a multimedia broadcast multicast service, or a unicast service, or one or more than one type of service transmitted in broadcast or multicast mode.

Mode 7:

Referring to figure 11-A, the device for transmitting a service 101 according to an embodiment of the present invention includes a time division multiplexing unit 1011 and a transmission unit 1012.

The 1011 time division multiplexing unit is configured to select part or all of the radio frames in a time unit as specific radio frames and select a part or all of the subframes in the specific radio frames as specific subframes to send a specific service.

The specific service is a multimedia broadcast multicast service, or a unicast service, or one or more than one type of service transmitted in broadcast or multicast mode.

The transmission unit 1012 is configured to transmit the service according to a time division multiplexing mode determined by the time division multiplexing unit 1011 above and to send the position information of the specific radio frames and / or the information of position of specific subframes.

Preferably, referring to figure 11-B, the device for transmitting a service 101 according to an embodiment of the present invention further includes a position information generating unit 1013.

The position information generation unit 1013 is configured to generate the position information of the specific radio frames and / or the position information of the specific subframes according to the specific radio frames and specific subframes selected by the multiplexing unit of 1011 time division.

Preferably, referring to figure 12-A, transmission unit 1012 may include a service transmission unit 10121 and a position information transmission unit 10122.

The service transmission unit 10121 is configured to transmit the service according to the time division multiplexing mode determined by the time division multiplexing unit 1011 above.

The position information transmission unit 10122 is configured to transmit the position information of the specific radio frames and / or the position information of the specific subframes.

Preferably, referring to figure 12-B, the transmission unit 1012 may include a transmission unit of prefix length 10123.

The 10123 prefix length transmission unit is configured to transmit information which indicates the length of CPs of the specific subframes in the time unit.

Mode 8:

Referring to figure 13, the base station 121 according to an embodiment of the present invention includes a device for transmitting a service 1211.

The device for transmitting a service 1211 includes a time division multiplexing unit 12111 and a transmission unit 12112.

The device for transmitting a 1211 service is configured to select part or all of the radio frames in a unit of time as specific radio frames; select part or all of the subframes in the specific radio frames as specific subframes to send a specific service; send the service according to the time division multiplexing mode above; and send position information for specific radio frames and / or position information for specific subframes.

The specific service is a multimedia broadcast multicast service, or a unicast service, or one or more than one type of service transmitted in broadcast or multicast mode.

The 12111 time division multiplexing unit is configured to select a part or all of the radio frames in a time unit as specific radio frames and select a part or all of the subframes in the specific radio frames as specific subframes to send the specific service.

The transmission unit 12112 is configured to transmit the service according to the time division multiplexing mode determined by the time division multiplexing unit 12111 above and to send the position information of the specific radio frames and / or the information of position of specific subframes.

To summarize, the present invention provides a service time division multiplexing method and a service time division multiplexing device as well as a method and device for transmitting a service. Specifically, the present invention provides an MBMS and a unicast service time division multiplexing method and its device, as well as a method and device for sending the MBMS and the unicast service, which prevents a user from unidiffusion service and an MBMS user read their own service information on the other side's transmission time, and save electricity for the user's equipment. The method for informing the CP length of the subframe provided by the present invention ensures that the user's equipment can demodulate the subframe exactly. The information transmission path, the information time mode and the information source encoding mode provided by the present invention ensure that the user's equipment can obtain precisely the required service data transmission time and read the service data corresponding when service data is sent in the event that the base station employs MBMS and the unicast service time division multiplexing mode, thus saving resources.

The specific service referred to in the present invention includes a service with a specific content or a service transmitted through a specific transmission mode, and also includes the service with the specific content transmitted through the specific transmission mode.

The service transmitted through a specific mode includes multiple types, for example, a service transmitted through a multimedia broadcast multicast mode, or a service transmitted through a unicast mode. The specific mode may also refer to an antenna configuration mode, a time frequency resource occupation mode, a code resource occupation mode, a space frequency occupation mode, etc. The specific mode may also refer to a service target device, for example, one or more than one type of service transmitted to a specific specific user or a specific group of users.

The service with specific content includes any or more than one type of multimedia broadcast multicast service, for example, streaming media services, data sharing services, etc. The service with the specific content may also include any one or more than one type of broadcast service.

The service with the specific content and transmitted through a certain specific transmission mode can be inferred from the explanation of the specific mode and the specific content, for example, a voice service transmitted through a broadcast mode.

Finally, it should be noted that the above modalities are merely provided to describe the technical solutions of the present invention, but are not intended to limit the present invention. It should be understood by those skilled in the art that although the present invention has been described in detail with reference to the above modalities, modifications can be made to the technical solutions described in the above modalities, or equivalent substitutions can be made in some technical characteristics in the technical solutions, provided that such modifications or substitutions do not cause the essence of the corresponding technical solutions to depart from the scope of the present invention.

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