WO2010133121A1 - Procédé et système de mise en oeuvre de support de canal de trafic de service de diffusion/multidiffusion multimédia - Google Patents

Procédé et système de mise en oeuvre de support de canal de trafic de service de diffusion/multidiffusion multimédia Download PDF

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Publication number
WO2010133121A1
WO2010133121A1 PCT/CN2010/072166 CN2010072166W WO2010133121A1 WO 2010133121 A1 WO2010133121 A1 WO 2010133121A1 CN 2010072166 W CN2010072166 W CN 2010072166W WO 2010133121 A1 WO2010133121 A1 WO 2010133121A1
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mtch
subframe
mbsfn
data
current
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PCT/CN2010/072166
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English (en)
Chinese (zh)
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苟伟
马子江
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中兴通讯股份有限公司
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Publication of WO2010133121A1 publication Critical patent/WO2010133121A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/30—Resource management for broadcast services

Definitions

  • the present invention relates to a Long Term Evolution (LTE) system, and in particular to a method and system for implementing a MTCH (MBMS Traffic Channel) bearer of a Multimedia Broadcast Multicast Service (MBMS).
  • LTE Long Term Evolution
  • MBMS Multimedia Broadcast Multicast Service
  • the 3rd Generation Partnership Project (3GPP) proposes an MBMS service, which is a technology for transmitting data from one data source to multiple targets, including core network and
  • the sharing of network resources, such as the access network improves the utilization of network resources, especially air interface resources.
  • the MBMS service defined by 3GPP can not only realize plain text low-rate message class multicast and broadcast, but also realize high-speed multimedia service broadcast and multicast, and provide a variety of rich video, audio and multimedia services, which undoubtedly conforms to the future.
  • the trend of mobile data development provides a better business prospect for the development of 3G.
  • the MBMS service can be transmitted in a hybrid carrier mode.
  • the hybrid carrier mode refers to a unicast service
  • the multi-cell mode multicast service that is, the MBMS service
  • the unit is a sub-frame.
  • LTE specifies that a two-level configuration method is used to configure radio frames and subframes that carry MBMS services. The details are as follows:
  • SFN is the abbreviation of System Frame Number system frame number, that is, the system's wireless frame number, from 0 to 1023.
  • the radioFrame AllocationPeriod represents a multimedia broadcast single frequency network (MBSFN) radio frame period, which can take any one of ⁇ 1, 2, 4, 8, 16, 32 ⁇ .
  • radioFrame AllocationOff set Indicates the offset of the MBSFN radio frame, which is an integer and is less than the value of the selected MBSFN radio frame period, greater than or equal to 0. Mod indicates that SF modulo or recalculate radioFrame AllocationPeriod.
  • the above-mentioned radio frame configured to carry MBMS services is called an MBSF radio frame.
  • the second level implements the specific subframes in the radio frame carrying the MBMS service to carry the MBMS service, and uses the bit map method, because the subframes #0, #4, #5 in the frequency division duplex (FDD) mode are specified in the LTE. #9 cannot carry the MBMS service. In the time division duplex (TDD) mode, the subframes #0, #1, #5, and #6 cannot carry the MBMS service. Therefore, the 6-bit bitmap is used to describe which of the remaining 6 subframes carry the MBMS service. .
  • the subframe configuration of the MBMS service carried in each MBSFN radio frame is the same.
  • the subframe configuration in the MBSFN radio frame in each BCCH modification period cannot be changed.
  • the subframe in which the MBMS service is carried in the MBSFN radio frame is referred to as an MBSFN subframe, which is also called a multicast subframe.
  • the consecutive multiple MBSFN subframes described herein refer only to the contiguous MBSFN subframes, and the intermediate non-MBSFN subframes are not counted.
  • Orthogonal Frequency Division Multiplexing (OFDM) symbols of an MBSFN subframe in LTE are used to transmit control information of a unicast service, which is also called a physical downlink control channel (PDCCH, Physical Downlink Control CHannel ), the remaining resources in the subframe are used to send MBMS services or other services.
  • a unicast service which is also called a physical downlink control channel (PDCCH, Physical Downlink Control CHannel )
  • PDCCH Physical Downlink Control CHannel
  • the configuration of the MBSFN radio frame and the MBSFN sub-frame can be implemented by the existing two-level configuration method.
  • the configured MBSFN sub-frame constitutes the physical resource for actually transmitting the MBMS service, that is, the physical multicast channel (PMCH, Physical Multicast). CHannel).
  • the PMCH carries a multicast channel (MCH, Multicast Channel).
  • MCH multicast Channel
  • the MCH is a multicast transmission channel defined by LTE, and is composed of a series of MBSFN subframes configured by a two-stage configuration method. Further, it is not excluded in LTE R9 that the MCH pass rule can be divided into multiple MCHs. For example, the MBSFN configured through a two-tier system A part of the MBSFN subframe in the subframe is taken as MCH1, and the remaining MBSFN subframe is taken as MCH2.
  • the main object of the present invention is to provide an implementation method and system for an MTCH bearer, and implement a specific bearer related to the MTCH.
  • a method for implementing a multimedia broadcast and multicast service transport channel bearer comprising: when a multimedia broadcast and a multicast service transport channel (MTCH) carries more data than a multimedia broadcast single frequency network (MBSFN) subframe, Each MTCH allocates at least two consecutive MBSFN subframes to implement the data bearer of the MTCH.
  • the data bearer of the MTCH is implemented by using the at least two MBSFN subframes. Populating MBSFN subframes;
  • one MBSFN subframe is allocated for each MTCH to implement data bearer of the MTCH.
  • the multiplexing mode used includes: multiplexing the current MTCH with other MTCHs in the current MBSFN subframe, or deleting the current MTCH with the other MTCH in the current MBSF subframe.
  • the multiplexing manner adopted includes: The current MTCH is multiplexed with other MTCHs in the MBSFN subframe, or the current MTCH is not multiplexed with other MTCHs in the MBSFN subframe.
  • the basic unit used in performing the multiplexing includes: a physical resource block (PRB), or an orthogonal frequency division multiplexing (OFDM) symbol, a subcarrier, or a subcarrier cluster.
  • PRB physical resource block
  • OFDM orthogonal frequency division multiplexing
  • the multiplexing manner adopted specifically includes : multiplexing the current MTCH with other MTCH, or unicast service data in the current subframe;
  • the multiplexing manner adopted includes: directly The MTCH is multiplexed with other MTCH, or unicast traffic data, within the subframe.
  • the subframe includes: an MBSFN subframe or a non-MBSFN subframe.
  • the basic units used in performing the multiplexing include: PRB.
  • the data bearer of the MTCH is implemented by using the one MBSFN subframe
  • the multiplexing mode used by the MTCH to carry one MBMS service includes: After the at least two MTCHs of the required MBMS service are bundled, the bundled at least two MTCHs are allocated one MBSFN subframe, and the bundled at least two MTCHs are filled with one MBSFN subframe; the bundled at least two MTCHs Performing multiplexing in a PRB, an OFDM symbol, a subcarrier, or a subcarrier cluster as a basic unit in the MBSF subframe;
  • the data bearer of the MTCH is implemented by using an integer number of MBSFN subframes, and the multiplexing mode of the MTCH is used for the MTCH to carry at least two MBMS services.
  • MBMS business is bundled directly in one
  • the MTCH is transmitted, and the bundled MTCH is filled with an integer number of MBSFN subframes.
  • the bundled MTCH is multiplexed in the MBSFN subframe by using a PRB, an OFDM symbol, a subcarrier, or a subcarrier cluster as a basic unit.
  • An implementation system for a multimedia broadcast and multicast service transport channel bearer comprising: an allocating unit and a bearer unit;
  • an allocating unit configured to allocate, for each MTCH, consecutive, at least two MBSFN subframes, and allocate the allocated at least two MBSFN subframes to the bearer, when the amount of data carried by the MTCH exceeds one MBSFN subframe state Or the unit is used; or, if the amount of data carried by the MTCH does not exceed one MBSFN subframe, allocate one MBSFN subframe for each MTCH, and provide the allocated one of the MBSF subframes to the bearer unit for use;
  • a bearer unit configured to use the allocated at least two MBSFN subframes to implement data bearer of the MTCH, and when the data bearer of the MTCH is implemented by using the at least two MBSFN subframes, the data carried by the MTCH is in chronological order Filling the MBSFN subframe; or, using the allocated one MBSFN subframe, to implement the data bearer of the MTCH.
  • the bearer unit further includes: a multiplexing module, where the MTCH data bearer is implemented by using the at least two MBSFN subframes in the MBMS service mode of the multi-cell, the multiplexing module is used for the current MTCH remaining The amount of data cannot be filled with a complete current MBSFN subframe, the current MTCH is multiplexed with other MTCHs in the current MBSFN subframe, or the current MTCH is not associated with the other MTCH in the current MBSFN.
  • Intraframe multiplexing Intraframe multiplexing
  • the multiplexing module for the current MTCH itself, cannot fill a complete MBSF subframe, directly
  • the MTCH is multiplexed with other MTCHs in the MBSFN subframe, or the current MTCH is not multiplexed with other MTCHs in the MBSFN subframe.
  • the bearer unit further includes: a multiplexing module, where the MTCH data bearer is implemented by using the at least two subframes in an MBMS service mode of a single cell, where the multiplexing module is used for data remaining in the current MTCH The quantity cannot be filled with a complete current subframe, and the current MTCH is multiplexed with other MTCH or unicast service data in the current subframe;
  • the multiplexing module In the MBMS service mode of the single cell, in the case of using the one subframe to implement the data bearing of the MTCH, the multiplexing module, the data volume used by the current MTCH itself cannot be filled with a complete subframe, and the current MTCH is directly It is multiplexed with other MTCH, or unicast service data, within the subframe.
  • the bearer unit further includes: a multiplexing module, in the MBMS service mode of the multi-cell, using the one MBSF subframe to implement the data bearer of the MTCH, and in the case that one MTCH carries one MBMS service, the multiplexing module After bundling at least two MTCHs that carry the MBMS service with the same quality of service requirement, allocate one MBSFN subframe to the bundled at least two MTCHs, and fill the bundled at least two MTCHs with one MBSFN subframe.
  • the bundled at least two MTCHs are multiplexed in the MBSFN subframe by using a PRB, an OFDM symbol, a subcarrier, or a subcarrier cluster as a basic unit;
  • the data bearer of the MTCH is implemented by using an integer number of MBSFN subframes, and in the case that one MTCH carries at least two MBMS services, the multiplexing module is used to carry the same quality of service requirement.
  • the MBMS service is directly bundled and transmitted on one MTCH, so that one bundled MTCH is filled with an integer number of MBSFN subframes; the bundled one MTCH is in the MBSFN subframe, and the PRB, OFDM symbol, subcarrier or subcarrier cluster is The basic unit is multiplexed.
  • the present invention implements the data bearer of the MTCH by using a plurality of MBSFN subframes for each MTCH when the amount of data carried by the MTCH exceeds one MBSFN subframe, wherein the data is implemented by using the at least two MBSFN subframes.
  • the data bearer of the MTCH includes: the data carried by the MTCH is filled with the MBSFN subframe in chronological order; when the amount of data carried by the MTCH does not exceed one MBSFN subframe, one MBSFN subframe is allocated for each MTCH to implement the data bearer of the MTCH.
  • the present invention implements a specific bearer related to the MTCH, and provides a higher and more flexible resource allocation granularity for the MTCH bearer, so as to reduce the waste of resources of the MTCH in the bearer, thereby improving the spectrum efficiency of the system.
  • FIG. 1 is a schematic diagram of an implementation process of a specific implementation in a multi-cell mode according to the present invention
  • FIG. 2 is a schematic diagram of an implementation process of another specific implementation in a multi-cell mode according to the present invention.
  • 3 is a schematic diagram of implementing MTCH multiplexing with OFDM symbols in a multicast sub-frame
  • FIG. 4 is a schematic diagram of implementing MTCH multiplexing with physical resource blocks in a multicast sub-frame
  • FIG. 5 is a schematic diagram of multiplexing MTCH and unicast service data in a unicast subframe
  • FIG. 6 is a schematic diagram of implementing MTCH multiplexing in a subcarrier or subcarrier cluster in a multicast sub-frame according to the present invention
  • FIG. 7 is a schematic structural diagram of a system according to the present invention. detailed description
  • the basic idea of the present invention is: When the data amount of a certain MTCH exceeds one MBSFN subframe, a plurality of consecutive MBSFN subframes are allocated for the data of the MTCH. When the amount of data carried by an MTCH does not exceed one MBSFN subframe, an MBSFN subframe is allocated for the MTCH.
  • An implementation method of the MTCH bearer which is different for the data amount of the MTCH bearer, and includes two specific implementations.
  • the first specific implementation is: when the amount of data carried by a certain MTCH exceeds one MBSFN subframe, the MTCH is Allocating a continuous, complete, multiple MBSFN subframe to implement data bearing of the MTCH; at this time, the data of the MTCH is continuously filled in the allocated multiple MBSFN subframes, and the data of other MTCHs are not carried in the MBSFN subframes. Or, the last subframe in these MBSFN subframes multiplexes data carrying other MTCHs.
  • the second specific implementation is as follows: When the amount of data carried by a certain MTCH does not exceed one MBSF subframe, an MSFN subframe is allocated for the MTCH to implement data bearing of the MTCH; at this time, the MTCH data can monopolize the MBSFN sub- A frame can also share an MBSFN subframe with the MTCH.
  • the difference in the amount of data for the MTCH bearer according to the present invention includes two different specific implementations, so that the MTCH bearer provides a higher and more flexible resource allocation granularity, and reduces the MTCH in the bearer. The waste of resources, thereby improving the spectral efficiency of the system.
  • the data of the MTCH is implemented by using multiple MBSFN subframes.
  • the bearer is specifically as follows: The data carried by the MTCH preferentially fills the top MBSFN subframe.
  • the MBMS service mode of a multi-cell is referred to as a multi-cell mode
  • the MBMS service mode of the single cell is referred to as a single-cell mode.
  • the multiplexing mode used includes two cases. The first case: multiplexing the current MTCH with other MTCHs in the current MBSFN subframe; The second case: the current MTCH is not associated with other MTCHs at present. MBSFN is intra-subframe multiplexed, that is, only the current MTCH is carried in the current MBSFN subframe.
  • the basic unit used when performing the multiplexing includes: a physical resource block (PRB), or an OFDM symbol, a subcarrier, or a subcarrier cluster.
  • PRB physical resource block
  • the multiplexing method used also includes two cases. The first case: directly multiplex the current MTCH with other MTCHs in the MBSF subframe; the second case: the current MTCH is not in the MBSF sub with other MTCHs. Intra-frame multiplexing, that is, only the current MTCH is carried in the MBSFN subframe.
  • the basic unit used in performing the multiplexing includes: a PRB, or an OFDM symbol, a subcarrier, or a subcarrier cluster.
  • Step 101 After bundling multiple MTCHs carrying MBMS services with the same quality of service (QOS) requirements, allocating the same MBSFN subframe to the bundled multiple MTCHs , the bundled multiple MTCH is filled with one MBSFN subframe or 4 ⁇ is filled with one MBSF subframe.
  • QOS quality of service
  • Step 102 The bundled MTCHs are multiplexed in the allocated MBSF subframe by using a PRB, an OFDM symbol, a subcarrier, or a subcarrier cluster as a basic unit.
  • the multiplexing method used includes the following steps: Step 201: Bind an MBMS service carrying the same QOS requirement to an MTCH, and fill the MTCH with a full number of MBSFNs. A sub-frame, or very close to a full integer number of MBSFN sub-frames.
  • one MTCH bundled at this time is far from being able to fill a full MBSFN subframe.
  • Step 202 The bundled MTCH is multiplexed in a currently allocated integer number of MBSF subframes by using a PRB, an OFDM symbol, a subcarrier, or a subcarrier cluster as a basic unit.
  • the MBMS in the single cell mode is not used in the present invention.
  • the subframe used by the service is limited, and the MBSFN subframe or the normal unicast subframe can be used.
  • the multiplexing mode adopted is specific.
  • the method includes: multiplexing the current MTCH with other MTCH or non-MBMS service data, such as unicast service data, in a current subframe.
  • the basic unit for performing the multiplexing includes: a PRB, an OFDM symbol, a subcarrier, or a subcarrier cluster.
  • the multiplexing method used includes: directly multiplexing the current MTCH with other MTCHs, or non-MBMS service data, such as unicast service data, in a subframe. Among them, proceed
  • the basic units used in the multiplexing include: PRB, OFDM symbol, subcarrier or subcarrier cluster.
  • the main contents of the present invention include the following contents:
  • the MTCH is preferentially allocated with a continuous complete MBSFN subframe.
  • the first mode the MTCH can be multiplexed with other MTCHs in the subframe.
  • the multiplexing may be based on a PRB, an OFDM symbol, a subcarrier, or a subcarrier cluster.
  • the second way The MTCH is not multiplexed with other MTCHs, and only the MTCH is carried in the subframe.
  • the first method is: directly performing the MTCH with other MTCHs, or sub-frames with non-MBMS service data, such as unicast service data.
  • Internal multiplexing The multiplexing may be based on a PRB, an OFDM symbol, a subcarrier, or a subcarrier cluster.
  • the second way The MTCH is not multiplexed with other MTCHs.
  • the MTCH is preferentially allocated for continuous complete subframe use.
  • the mode is:
  • the MTCH can be multiplexed with other MTCH or non-MBMS service data, such as unicast service data, in the subframe.
  • the multiplexing may be based on PRB, OFDM symbols, subcarriers, or subcarrier clusters.
  • the MTCH When the MTCH data volume cannot be filled with one MBSFN subframe, the MTCH is directly multiplexed with other MTCH or non-MBMS service data such as unicast service data.
  • the multiplexing may be based on a PRB, an OFDM symbol, a subcarrier, or a subcarrier cluster.
  • a resource block may obtain a resource block in units of OFDM symbols, a resource block in units of PRBs, and a resource block in units of subcarriers or subcarriers may be obtained.
  • the LTE R9 specifies that the first one or two OFDMs of the MBSFN subframe are used to carry the PDCCH, and serve the unicast service. The remaining resources are used to transmit the MBMS service, specifically, the MTCH is carried, and the PDCCH is not carried. Unicast business. Then, in a series of MBSFN subframes configured in the system, how to allocate each resource for each MTCH? The contents described above of the present invention are exemplified below.
  • each MTCH corresponds to data carrying only one MBMS service.
  • the first embodiment and the second instance are: a specific implementation of the MTCH bearer; the third embodiment to the fifth embodiment are: a specific implementation of the MTCH bearer in the MBSF subframe; the sixth example is: the MTCH is multiplexed with the MBSF subframe as a basic unit. Implementation.
  • Example 1 For the case where the MTCH average data volume exceeds one MBSFN subframe, the system side allocates corresponding bearer resources according to the data amount of each MTCH bearer. Specifically, each MTCH is allocated a continuous MBSFN subframe for carrying data of the MBMS service, and a scheduling of the MBMSN subframes for the MBMS service is allocated, because the data volume of the MBMS service is generally large, and the MBMS service is used.
  • the terminal can maintain the radio frequency to complete the MBMS service in the continuous MBSFN sub-frame. After that, the terminal can turn off the radio to maintain power saving, thereby preventing the terminal from continuously turning off and turning on the radio to save power. And receive MBMS services.
  • the data of the MTCH is preferentially filled with the previous subframe. When the remaining amount of data of the MTCH is insufficient to fill the last MBSFN subframe, the following two methods can be used.
  • the first mode continues to fill the last MBSFN subframe with the PRB, OFDM symbol, subcarrier or subcarrier cluster as the basic unit, but the MBSFN subframe no longer carries other MTCH data.
  • the second way continue to fill with PRB, OFDM symbol, subcarrier or subcarrier cluster as the basic unit.
  • the last MBSF subframe, for the remaining resources of the MBSFN subframe, allows other MTCHs to continue to be padded with the PRB, OFDM symbol, subcarrier or subcarrier cluster as a basic unit.
  • the multiplexing in a specific subframe refers to the following example 3 to 5 in which the MTCH is multiplexed in a subframe.
  • the beneficial effects are as follows: When the data volume of the MTCH cannot be filled with one MBSFN subframe, the data of the MTCH and other MTCHs are allowed to be multiplexed in one subframe, thereby avoiding the waste of system resources.
  • Example 2 For a case where the average data volume of the MTCH is small, for example, the case where the MBSFN subframe cannot be filled, the processing method of the cartridge is: the system side directly allocates one MBSFN subframe to the MTCH, and the MBSFN subframe It is not multiplexed with other MTCHs. Such resource allocation is the easiest to implement, with minimal signaling overhead, but the system has low resource utilization. Another method of processing is: The system side evaluates the amount of data of each MTCH, and bundles a plurality of suitable MTCHs to fill a MBSFN subframe, or is close to filling a MBSFN subframe.
  • the system side allocates these MTCHs in one MBSFN subframe, and multiple MTCHs are multiplexed in the MBSFN subframe by using PRB or OFDM symbols, subcarriers or subcarrier clusters as a basic unit.
  • PRB or OFDM symbols, subcarriers or subcarrier clusters as a basic unit.
  • it is actually to bundle multiple MTCHs carrying MBMS services with the same QOS requirements, where one MTCH carries one MBMS service.
  • a specific implementation is also provided to prevent the MTCH from being filled up to a full MBSFN subframe.
  • data of more than 4 MB MBMS services can be directly bundled on one MTCH and transmitted through an MTCH.
  • the principle of bundling the MBMS service at this time is to bundle multiple MBMS service data, and finally the bundled data volume can be filled with a full number of MBSFN subframes, or close to a full integer MBSFN subframe.
  • the MBMS services carrying the same QOS requirements are directly bundled and transmitted on one MTCH, where one MTCH carries multiple MBMS services.
  • the third example is as follows: One or more MTCHs are carried in the MBSFN subframe by using PRB as a basic unit, and are implemented by multiplexing.
  • an MTCH is represented as MTCH1, and the PRB is used as a basic unit to carry; another MTCH different from MTCH1 is represented as MTCH2, and is also carried in the PRB as a basic unit, and thus Multiple multiplexes of MTCHs within a sub-frame are implemented.
  • the PRB is used as a basic unit to carry
  • another MTCH different from MTCH1 is represented as MTCH2, and is also carried in the PRB as a basic unit, and thus Multiple multiplexes of MTCHs within a sub-frame are implemented.
  • the occupied resources should be removed from the PRB.
  • the beneficial effects are as follows:
  • the PRB of the unicast service specified by the current LTE is used for the MTCH, so that the utilization of the system resources can be maximized in the MTCH bearer, and the waste of system resources is avoided.
  • the control signaling format of the existing unicast service can be directly used.
  • the fourth example is as follows:
  • the MTCH carries the OFDM as a basic unit on the MBSFN subframe and implements multiplexing.
  • an MTCH is represented as MTCH1, and is carried in an OFDM symbol as a basic unit; another MTCH different from MTCH1 is represented as MTCH2, and is also carried in an OFDM symbol as a basic unit, so that In this way, multiplexing of multiple MTCHs within a subframe is achieved.
  • the OFDM symbol used to carry the MTCH in the subframe should start immediately after the OFDM symbol used by the PDCCH in the subframe.
  • the beneficial effects are: providing time division multiplexing between MTCHs, and the OFDM symbol is the minimum granularity that can be utilized in time division multiplexing of the LTE system.
  • the biggest advantage of time-division multiplexing is that it can prevent the terminal from receiving services that it is not interested in, thus saving power.
  • Example 5 is: MTCH and unicast service data are multiplexed in a sub-frame with a PRB as a basic unit.
  • the subframe here does not distinguish whether it is an MBSFN subframe or a non-MBSFN subframe, such as a unicast service subframe, either.
  • the difference between the MBSFN subframe and the unicast service subframe is added.
  • the MBSFN subframe uses the extended CP, and the first 1 or 2 OFDM symbols are used to carry the PDCCH.
  • the unicast service subframe uses the long CP or the short CP, and the front 1 to 4 OFDM symbols are used to carry the PDCCH, of which 4 OFDM symbols The number is only for the 1.4M system.
  • one MTCH is represented as MTCH1, and the PRB is used as a basic unit to carry; another MTCH different from MTCH1 is represented as MTCH2, and is also carried in a PRB as a basic unit;
  • the service data that is, the user 1 data and the user 2 data are still carried in the PRB as a basic unit, thus realizing the multiplexing of the MTCH and the unicast service data in the subframe.
  • some resources in the PRB are used by other information, such as system messages, control information, etc., the occupied resources should be removed from the PRB.
  • MCCH multicast control channel
  • MMS MBMS Scheduling Channel
  • MBMS notification indication information the unicast service data multiplexing. It is only necessary to replace the MTCH with the MCCH or the MSCH. Or the MBMS notification indication information can be implemented.
  • the beneficial effects are as follows:
  • the PRB of the unicast service specified by the current LTE is used for the MTCH, so that the utilization of the system resources can be maximized in the MTCH bearer, and the waste of system resources is avoided.
  • the control signaling format of the existing unicast service can be directly used.
  • Example 6 is: MTCH is carried and reused in subframe units.
  • Each MTCH is allocated an integer number of complete subframes for bearer. When some resources in the subframe are occupied by other information, such as system messages, control information, etc., the part of the resources should be removed when carrying the MTCH. Even if the MTCH data cannot be filled with one sub-frame, one sub-frame must be allocated.
  • the beneficial effects are:
  • the implementation is simple, and the terminal can be prevented from receiving data that is not of interest, thereby saving power.
  • the seventh example is as follows:
  • the MTCH carries the subcarrier or the subcarrier cluster as a basic unit on the MBSF subframe, and implements multiplexing.
  • an MTCH is represented as MTCH1, and is carried in a subcarrier or a subcarrier cluster as a basic unit; another MTCH different from MTCH1 is represented as MTCH2, and a subcarrier or a subcarrier is also used.
  • the cluster is carried as a basic unit, thus realizing multiplexing of multiple MTCHs in a subframe.
  • these subcarriers or subcarrier clusters may be continuous or discrete.
  • the occupied resources should be removed from the subcarrier or subcarrier cluster.
  • the subcarrier cluster here may be defined as a certain number of subcarriers to form one subcarrier cluster, and the subcarriers constituting one subcarrier cluster may be continuous or discrete at an actual frequency.
  • one subcarrier cluster can be defined as composed of 12 subcarriers.
  • Frequency division multiplexing is provided between MTCHs, and the subcarriers are the minimum granularity that can be utilized in frequency division multiplexing of the LTE system.
  • the biggest benefit of frequency division multiplexing is that it can achieve a large frequency diversity gain and improve the performance of the service.
  • an implementation system of an MTCH bearer includes: an allocating unit and a bearer unit.
  • the allocation unit includes two specific implementations.
  • the first specific implementation is: The allocation unit is configured to allocate a continuous, complete, multiple MBSFN subframe for each MTCH in a state in which the amount of data carried by the MTCH exceeds one MBSFN subframe.
  • the multiple MBSFN subframes are allocated to the bearer unit for use;
  • the second specific implementation: the allocation unit is configured to allocate one MBSFN subframe for each MTCH in a state where the data volume of the MTCH bearer does not exceed one MBSFN subframe.
  • the allocated one MBSFN subframe is provided for use by the bearer unit.
  • the bearer unit also includes two specific implementations.
  • the first specific implementation is as follows: The bearer unit is configured to implement the MTCH data bearer by using the allocated multiple MBSFN subframes.
  • the second specific implementation is: the bearer unit is configured to use the allocated one MBSFN. Subframe, to implement data bearing of MTCH.
  • the bearer unit is further configured to use the data carried by the MTCH to preferentially fill the temporally preceding MBSF subframe in the case of using the allocated multiple MBSFN subframes.
  • the bearer unit further includes a multiplexing module, and the specific implementation of the multiplexing module includes the following situations, which are respectively described below.
  • Case 2 In multi-cell mode, MTCH data is implemented using one MBSFN subframe.
  • the multiplexing module is configured to not fill a complete MBSFN subframe with the current MTCH data, and directly multiplex the current MTCH with other MTCHs in the MBSFN subframe;
  • the specific implementation is as follows: The multiplexing module is configured to not fill a complete MBSFN subframe with the current MTCH data, and the current MTCH is not multiplexed with other MTCHs in the MBSFN subframe.
  • the third case In the single cell mode, when multiple subframes are used to implement MTCH data bearer, the multiplex module is used for the current MTCH, and the remaining data volume cannot be filled with a complete current subframe, and the current MTCH and other MTCH, or unicast service data is multiplexed in the current subframe.
  • the fourth case In the single-cell mode, when one subframe is used to implement the data bearing of the MTCH, the multiplexing module uses the data amount of the current MTCH itself to not fill a complete subframe, and directly compares the current MTCH with other MTCH, or unicast traffic data is multiplexed within a subframe.
  • the fifth case In the multi-cell mode, when one MBSFN subframe is used to implement the data bearer of the MTCH, and in the case that one MTCH carries one MBMS service, the multiplexing module is used to carry multiple MBMS services with the same QOS requirement. After the MTCH is bundled, allocate one MBSFN subframe to the bundled multiple MTCHs, so that the bundled multiple MTCHs are filled or nearly filled with one MBSF subframe; the bundled multiple MTCHs are in the MBSFN subframe, with PRB or The OFDM symbols are multiplexed for the base unit.
  • the MTCH data bearer is implemented by using an integer number of MBSFN subframes, and when one MTCH carries at least two MBMS services, the multiplexing module is used to carry the MBMS service with the same QOS requirement.
  • the direct bundling is transmitted on an MTCH, so that one bundled MTCH is filled or very close to the full number of MBSF subframes; the bundled MTCH is multiplexed in the MBSFN subframe by using PRB or OFDM symbols as a basic unit.
  • each MTCH defaults to only one MBMS service data. If each MTCH can carry data of one or more MBMS services, the present invention can also be used, and it is only necessary to replace the MTCH in the specification with the data of the MBMS service.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention porte sur un procédé de mise en œuvre de support de canal de trafic de service de diffusion/multidiffusion multimédia (MTCH). Le procédé comprend : selon les différentes quantités de données portées par des MTCH, l'allocation d'au moins deux sous-trames de réseau de service de diffusion/multidiffusion multimédia à fréquence unique (MBSFN) continues pour chaque MTCH à utiliser de façon à mettre en œuvre un support de données du MTCH, ou l'allocation d'une seule sous-trame MBSFN pour chaque MTCH à utiliser de façon à mettre en œuvre un support de données du MTCH. La présente invention porte également sur un système de mise en œuvre de support MTCH. Dans le système, une unité support est utilisée pour mettre en œuvre un support de données d'un MTCH à l'aide d'au moins deux sous-trames MBSFN allouées, ou pour mettre en œuvre un support de données d'un MTCH à l'aide d'une seule sous-trame MBSFN allouée. Avec le procédé et le système de la présente invention, il est possible de mettre en œuvre le support concret relatif au MTCH.
PCT/CN2010/072166 2009-05-21 2010-04-23 Procédé et système de mise en oeuvre de support de canal de trafic de service de diffusion/multidiffusion multimédia WO2010133121A1 (fr)

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