CN101895820B - Method and system for realizing multimedia broadcasting and multicasting service transmission channel bearing - Google Patents
Method and system for realizing multimedia broadcasting and multicasting service transmission channel bearing Download PDFInfo
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- CN101895820B CN101895820B CN200910085362.4A CN200910085362A CN101895820B CN 101895820 B CN101895820 B CN 101895820B CN 200910085362 A CN200910085362 A CN 200910085362A CN 101895820 B CN101895820 B CN 101895820B
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Abstract
The invention discloses a method for realizing multimedia broadcasting and multicasting service transmission channel bearing, which comprises the following steps of: according to the difference among data quantities borne by multimedia broadcasting and multicasting service transmission channels (MTCH), respectively allocating at least two continuous multimedia broadcasting single-frequency network (MBSFN) subframes to each MTCH for use to realize the data bearing of the MTCH, or allocating one MBSFN subframe to each MTCH for use to realize the data bearing of the MTCH. The invention also discloses a system for realizing multimedia broadcasting and multicasting service transmission channel bearing. In the system, a bearing unit is used for adopting the at least two allocated MBSFN subframes to realize the data bearing of the MTCH, or is used for adopting the one allocated MBSFN subframe to realize the data bearing of the MTCH. By using the method and the system, the specific bearing of the relevant MTCH can be realized.
Description
Technical field
The present invention relates to Long Term Evolution (LTE, Long Term Evolution) system, relate in particular to a kind of multimedia broadcasting and multicast service (MBMS, Multimedia Broadcast Multicast Service) implementation method and the system of transmission channel (MTCH, MBMS Traffic Channel) carrying.
Background technology
Along with the fast development of Internet and popularizing of large-screen multi-functional mobile phone, a large amount of Mobile data multimedia services and various high bandwidth multimedia service have been there is, for example, video conference, television broadcasting, video request program, advertisement, online education, interactive game etc., like this, both met the business demand that mobile subscriber constantly rises, simultaneously again for mobile operator brings new business growth point.These Mobile data multimedia services require multiple users can receive identical data simultaneously, compared with general data service, have the features such as data volume is large, duration length, delay sensitive.
In order to effectively utilize mobile network resource, third generation partner program (3GPP, 3rd GenerationPartnership Project) MBMS business proposed, this MBMS business is from a data source to multiple targets, to transmit the technology of data, the Internet resources of having realized including core net and Access Network are shared, Internet resources have been improved, especially the utilance of air interface resource.The MBMS business of 3GPP definition not only can realize classes of messages multicast and the broadcast of plain text low rate, but also can realize broadcast and the multicast of high-speed multimedia business, multiple abundant video, audio frequency and multimedia service are provided, this has complied with the trend of following Mobile data development undoubtedly, for the development of 3G provides better business prospect.
In LTE, MBMS business can adopt mixed carrier mode to send, and mixed carrier mode refers to unicast service, and the multicast service of many cell patterns is that MBMS business sends on same carrier wave in time-multiplexed mode, and time-multiplexed least unit is subframe.In LTE, stipulate at present, with the collocation method of dual unit, configure radio frames and the subframe of bearing MBMS service, specifically describe as follows:
The first order realizes the radio frames configuration of bearing MBMS service, meets equation SFN modradioFrameAllocationPeriod=radioFrameAllocationOffset below.
Wherein, SFN is the abbreviation of System Frame Number System Frame Number, i.e. the radio frames of system numbering, from 0 to 1023.RadioFrameAllocationPeriod represents multimedia broadcasting single frequency network (MBSFN) wireless frame period, its can get in 1,2,4,8,16,32} any one.RadioFrameAllocationOffset represents the skew of MBSFN radio frames, and its value is integer and the numerical value that is less than selected MBSFN wireless frame period, is more than or equal to 0.Mod represents that SFN is to radioFrameAllocationPeriod delivery or complementation.The above-mentioned bearing MBMS service radio frames that is configured to is called MBSFN radio frames.
The second level is realized concrete which the subframe bearing MBMS service in bearing MBMS service radio frames, use the method for bit map (bitmap), owing to stipulating in LTE that subframe #0, #4 under Frequency Division Duplexing (FDD) (FDD) pattern, #5, #9 can not bearing MBMS services; Subframe #0, #1 under time division duplex (TDD) pattern, #5, #6 can not bearing MBMS services, therefore, use the bitmap of 6 bits to describe remaining 6 which bearing MBMS services of subframe.The sub-frame configuration of the bearing MBMS service in each MBSFN radio frames is identical.Because dual unit configuration signal sends to terminal in system broadcast message (BCCH, Broadcast ControlChannel), therefore, the sub-frame configuration in the MBSFN radio frames within each BCCH modification cycle can not change.In above-mentioned MBSFN radio frames, the subframe of bearing MBMS service is called MBSFN subframe, also claims multicast subframe.
Front 1 or 2 OFDM (OFDM of MBSFN subframe in LTE at present, Orthogonal Frequency Division Multiplexing) symbol is for transmitting the control information of unicast service, also referred to as Physical Downlink Control Channel (PDCCH, Physical Downlink Control CHannel), in this subframe, remaining resource is used for sending MBMS business or other business.
By the collocation method of above-mentioned existing dual unit, can realize the configuration of MBSFN radio frames and MBSFN subframe, the MBSFN subframe configuring is exactly the physical resource that has formed actual transmissions MBMS business, be physics multicast channel (PMCH, Physical Multicast CHannel).PMCH bear multicast channel (MCH, Multicast Channel).MCH is the multicast transmission channel of LTE regulation, a series of MBSFN subframes of the collocation method configuration by dual unit, consists of.Further, in LTE R9, do not get rid of MCH and can be divided into multiple MCH by rule.For example,, using the part MBSFN subframe in the MBSFN subframe configuring by dual unit as MCH1, using remaining MBSFN subframe as MCH2.
In LTE Ran2 65bis meeting, determining in LTE R9 that regulation MTCH is mapped in MCH carries, but does not also provide concrete carrying, mapping mode at present.So, is it upper that how should MTCH be carried on MCH? the data volume of considering the MTCH of the different MBMS business of carrying differs larger, more needs a kind of load multiplexing method on MCH that can be applicable to different MTCH here; Also to consider that a MTCH is used the carrying under multiple complete subframes and a parton frame condition; And during the MBMS business model of Dan community, how multiplexing in subframe the MTCH of unicast service and multicast service is, all do not provide the method for solution.In sum, at present, there is not the specific implementation of relevant MTCH carrying.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of implementation method and system of MTCH carrying, has realized the concrete carrying about MTCH.
For achieving the above object, technical scheme of the present invention is achieved in that
An implementation method for multimedia broadcasting and multicasting service transmission channel bearing, the method comprises:
When the data volume of multimedia broadcasting and multicasting service transmission channel MTCH carrying exceedes a multimedia broadcasting single frequency network MBSFN subframe, for distributing at least two continuous MBSFN subframes, uses each MTCH, realize the Deta bearer of MTCH;
When the data volume of MTCH carrying does not exceed a MBSFN subframe, for distributing a MBSFN subframe, uses each MTCH, realize the Deta bearer of MTCH.
Wherein, the Deta bearer that described in use, at least two MBSFN subframes realize MTCH is specially: the upper forward MBSFN subframe of high priority data filling time of MTCH carrying.
Wherein, under the multimedia broadcasting of Duo community and multicast service MBMS business model, described in use, at least two MBSFN subframes realize in the Deta bearer situation of MTCH, when the remaining data volume of current MTCH can not be filled a full complete current MBSFN subframe, the multiplex mode adopting specifically comprises: by described current MTCH and other MTCH in described current MBSFN subframe multiplexing or, current MTCH is not multiplexing in current MBSFN subframe with described other MTCH;
Under the MBMS business model of Duo community, use a described MBSFN subframe to realize in the Deta bearer situation of MTCH, when the data volume of current MTCH self can not be filled a full complete MBSFN subframe, the multiplex mode adopting specifically comprises: directly by current MTCH and other MTCH in described MBSFN subframe multiplexing or, current MTCH is not multiplexing in MBSFN subframe with other MTCH.
Wherein, carrying out the described base unit adopting when multiplexing comprises: Physical Resource Block PRB or orthogonal frequency division multiplex OFDM symbol, subcarrier or cluster of subcarriers.
Wherein, under the MBMS business model of Dan community, described in use, at least two subframes realize in the Deta bearer situation of MTCH, when the remaining data volume of current MTCH can not be filled a full complete current subframe, the multiplex mode of employing specifically comprises: described current MTCH and other MTCH or unicast service data are carried out multiplexing in described current subframe;
Under the MBMS business model of Dan community, use a described subframe to realize in the Deta bearer situation of MTCH, when the data volume of current MTCH self can not be filled a full complete subframe, the multiplex mode of employing specifically comprises: directly by multiplexing in described subframe to current MTCH and other MTCH or unicast service data.
Wherein, described subframe comprises: MBSFN subframe or non-multicast service subframe.
Wherein, carrying out the described base unit adopting when multiplexing comprises: PRB.
Wherein, under the MBMS business model of Duo community, use a described MBSFN subframe to realize the Deta bearer of MTCH, and under a MBMS service conditions of a MTCH carrying, the multiplex mode adopting specifically comprises: will carry after at least two MTCH bindings of the MBMS business with same services quality requirement, for at least two MTCH after binding distribute a MBSFN subframe, make at least two MTCH after binding fill a full MBSFN subframe; At least two MTCH after described binding, in described MBSFN subframe, carry out multiplexing take PRB, OFDM symbol, subcarrier or cluster of subcarriers as base unit;
Under the MBMS business model of Duo community, use an integer MBSFN subframe to realize the Deta bearer of MTCH, and under at least two MBMS service conditions of a MTCH carrying, the multiplex mode adopting specifically comprises: by carrying the MBMS business with same services quality requirement, be directly bundled in the upper transmission of a MTCH, make a MTCH after binding fill a full integer MBSFN subframe; A MTCH after described binding, in MBSFN subframe, carries out multiplexing take PRB, OFDM symbol, subcarrier or cluster of subcarriers as base unit.
The system that realizes of multimedia broadcasting and multicasting service transmission channel bearing, this system comprises: allocation units and load bearing unit; Wherein,
Allocation units, exceed under a MBSFN subframe state for the data volume in MTCH carrying, for each MTCH distributes continuous, at least two MBSFN subframes, described at least two MBSFN subframes of distributing are offered to described load bearing unit and use; Or, in the data volume of MTCH carrying, do not exceed under a MBSFN subframe state, for each MTCH distributes a MBSFN subframe, a described MBSFN subframe of distributing is offered to described load bearing unit and use;
Load bearing unit, for using described at least two MBSFN subframes of distribution, realizes the Deta bearer of MTCH; Or, use a described MBSFN subframe of distributing, realize the Deta bearer of MTCH.
Wherein, described load bearing unit, is further used for using in described at least two MBSFN subframe situations of distributing, upper forward MBSFN subframe of the high priority data filling time of MTCH carrying.
Wherein, described load bearing unit also comprises: Multiplexing module, under the MBMS business model of Duo community, described in use, at least two MBSFN subframes realize in the Deta bearer situation of MTCH, described Multiplexing module, for the remaining data volume of current MTCH, can not fill a full complete current MBSFN subframe, by described current MTCH and other MTCH in described current MBSFN subframe multiplexing or, current MTCH is not multiplexing in current MBSFN subframe with described other MTCH;
Under the MBMS business of Duo community, use a described MBSFN subframe to realize in the Deta bearer situation of MTCH, described Multiplexing module, for the data volume of current MTCH self, can not fill a full complete MBSFN subframe, directly by current MTCH and other MTCH in described MBSFN subframe multiplexing or, current MTCH is not multiplexing in MBSFN subframe with other MTCH.
Wherein, described load bearing unit also comprises: Multiplexing module, under the MBMS business model of Dan community, described in use, at least two subframes realize in the Deta bearer situation of MTCH, described Multiplexing module, for the remaining data volume of current MTCH, can not fill a full complete current subframe, described current MTCH and other MTCH or unicast service data are carried out multiplexing in described current subframe;
Under the MBMS business model of Dan community, use a described subframe to realize in the Deta bearer situation of MTCH, described Multiplexing module, for the data volume of current MTCH self, can not fill a full complete subframe, directly by multiplexing in described subframe to current MTCH and other MTCH or unicast service data.
Wherein, described load bearing unit also comprises: Multiplexing module, under the MBMS business model of Duo community, use a described MBSFN subframe to realize the Deta bearer of MTCH, and under a MBMS service conditions of a MTCH carrying, described Multiplexing module, for carrying after at least two MTCH bindings of the MBMS business with same services quality requirement, for at least two MTCH after binding distribute a MBSFN subframe, make at least two MTCH after binding fill a full MBSFN subframe; At least two MTCH after described binding, in described MBSFN subframe, carry out multiplexing take PRB, OFDM symbol, subcarrier or cluster of subcarriers as base unit;
Under the MBMS business model of Duo community, use an integer MBSFN subframe to realize the Deta bearer of MTCH, and under at least two MBMS service conditions of a MTCH carrying, described Multiplexing module, for being directly bundled in the upper transmission of a MTCH by carrying the MBMS business with same services quality requirement, make a MTCH after binding fill a full integer MBSFN subframe; A MTCH after described binding, in MBSFN subframe, carries out multiplexing take PRB, OFDM symbol, subcarrier or cluster of subcarriers as base unit.
The present invention, when the data volume of MTCH carrying exceedes a MBSFN subframe, uses for each MTCH distributes continuous multiple MBSFN subframes, realizes the Deta bearer of MTCH; When the data volume of MTCH carrying does not exceed a MBSFN subframe, for distributing a MBSFN subframe, uses each MTCH, realize the Deta bearer of MTCH.
Adopt the present invention, realized the concrete carrying about MTCH, for the carrying of MTCH provides higher, resource particle distribution degree more flexibly, to reduce MTCH waste to resource in carrying, thus the spectrum efficiency of elevator system.
Accompanying drawing explanation
Fig. 1 is the realization flow schematic diagram of a kind of specific implementation under the many cell patterns of the present invention;
Fig. 2 is the realization flow schematic diagram of another kind of specific implementation under the many cell patterns of the present invention;
Fig. 3 realizes the multiplexing schematic diagram of MTCH with OFDM symbol in multicast subframe;
Fig. 4 realizes the multiplexing schematic diagram of MTCH with Physical Resource Block in multicast subframe;
Fig. 5 is the schematic diagram of the interior MTCH of clean culture subframe and unicast service data-reusing;
Fig. 6 is that the interior subcarrier of multicast subframe of the present invention or cluster of subcarriers realize the multiplexing schematic diagram of MTCH;
Fig. 7 is the composition structural representation of system of the present invention.
Embodiment
Basic thought of the present invention is: when the data volume of a certain MTCH exceedes a MBSFN subframe, for multiple MBSFN subframes that the data allocations of this MTCH is continuous are used.When the data volume of a certain MTCH carrying does not exceed a MBSFN subframe, for distributing a MBSFN subframe, uses this MTCH.
Below in conjunction with accompanying drawing, the enforcement of technical scheme is described in further detail.
A kind of implementation method of MTCH carrying, the method is for the difference of the data volume of MTCH carrying, comprise two kinds of specific implementations, the first specific implementation is: when the data volume of a certain MTCH carrying exceedes a MBSFN subframe, for this MTCH distributes continuous, complete, multiple MBSFN subframe, use, realize the Deta bearer of MTCH; Now the high priority data of MTCH is filled in multiple MBSFN subframes of distributing continuously, the data of not carrying other MTCH in these MBSFN subframes.The second specific implementation is: when the data volume of a certain MTCH carrying does not exceed a MBSFN subframe, for this MTCH distributes a MBSFN subframe, use, realize the Deta bearer of MTCH; Now the data of MTCH can be monopolized this subframe, also can share a subframe with MTCH.Employing the present invention is directed to the difference of the data volume of MTCH carrying, comprise two kinds of different specific implementations, so, just for the carrying of MTCH provides higher, resource particle distribution degree more flexibly, reduced MTCH waste to resource in carrying, thus the spectrum efficiency of elevator system.
Wherein, with regard to the first specific implementation, the Deta bearer that uses multiple MBSFN subframes to realize MTCH is specially: the upper forward MBSFN subframe of high priority data filling time of MTCH carrying.
Here it is pointed out that under the MBMS business model of MBMS business model Huo Dan community of Duo community, for above two kinds of specific implementations, have nothing in common with each other, below set forth respectively.And, terse in order to describe, below the MBMS business model of Jiang Duo community be called many cell patterns; The MBMS business model of Jiang Dan community is called single cell pattern.
Under many cell patterns, for above the first specific implementation, under many cell patterns, use multiple MBSFN subframes to realize in the Deta bearer situation of MTCH, when the remaining data volume of current MTCH can not be filled a full complete current MBSFN subframe, the multiplex mode adopting specifically comprises two kinds of situations, the first situation: by multiplexing in current MBSFN subframe to current MTCH and other MTCH; The second situation: current MTCH is not multiplexing in current MBSFN subframe with other MTCH, that is to say, in current MBSFN subframe, only carry current MTCH.Wherein, carrying out the described base unit adopting when multiplexing comprises: Physical Resource Block (PRB) or OFDM symbol, subcarrier or cluster of subcarriers.
Under many cell patterns, for above the second specific implementation, under many cell patterns, use a MBSFN subframe to realize in the Deta bearer situation of MTCH, when the data volume of current MTCH self can not be filled a full complete MBSFN subframe, the multiplex mode adopting specifically also comprises two kinds of situations, the first situation: directly by multiplexing in MBSFN subframe to current MTCH and other MTCH; The second situation: current MTCH is not multiplexing in MBSFN subframe with other MTCH, that is to say, in MBSFN subframe, only carry current MTCH.Wherein, carrying out the described base unit adopting when multiplexing comprises: PRB or OFDM symbol, subcarrier or cluster of subcarriers.
Here it is to be noted, under many cell patterns, also has a kind of specific implementation, specifically, under many cell patterns, use a MBSFN subframe to realize the Deta bearer of MTCH, and under a MBMS service conditions of a MTCH carrying, as shown in Figure 1, the multiplex mode of employing comprises the following steps:
Here, the multiple MTCH after now binding can not fill a full MBSFN subframe.
Also can be the MBMS bundling with identical QOS in a MTCH, at this moment owing to having bundled multiple MBMS business, therefore this MTCH can fill a full subframe.
Multiple MTCH after step 102, binding, in this MBSFN subframe of distributing, carry out multiplexing take PRB, OFDM symbol, subcarrier or cluster of subcarriers as base unit.
Here, in addition, under many cell patterns, also has another kind of specific implementation, specifically, under many cell patterns, a use integer MBSFN subframe realizes the Deta bearer of MTCH, and a MTCH carries under multiple MBMS service conditions, as shown in Figure 2, the multiplex mode of employing comprises the following steps:
Here, a MTCH after now binding can not fill a full MBSFN subframe far away.
A MTCH after step 202, binding, in an integer MBSFN subframe of current distribution, carries out multiplexing take PRB, OFDM symbol, subcarrier or cluster of subcarriers as base unit.
It is to be noted: under single cell pattern, owing to there is no at present the MBMS service bearer of instruction book cell pattern in MBSFN subframe or common clean culture subframe, therefore the subframe of the MBMS business of single cell pattern not being used in the present invention limits, MBSFN subframe or common clean culture subframe can adopt.
Under single cell pattern, for above the first specific implementation, use subframe to realize in the Deta bearer situation of MTCH, when the remaining data volume of current MTCH can not be filled a full complete current subframe, the multiplex mode of employing specifically comprises: current MTCH and other MTCH or for example unicast service data of non-MBMS business datum are carried out multiplexing in current subframe.Wherein, carrying out the described base unit adopting when multiplexing comprises: PRB, OFDM symbol, subcarrier or cluster of subcarriers.
Under single cell pattern, for above the second specific implementation, under single cell pattern, use a subframe to realize in the Deta bearer situation of MTCH, when the data volume of current MTCH self can not be filled a full complete subframe, the multiplex mode of employing specifically comprises: directly by multiplexing in subframe to current MTCH and other MTCH or for example unicast service data of non-MBMS business datum.Wherein, carrying out the described base unit adopting when multiplexing comprises: PRB, OFDM symbol, subcarrier or cluster of subcarriers.
In sum, main contents of the present invention comprise following content:
The first, for the MBMS business of many cell patterns, MTCH data volume exceedes in the situation of a MBSFN subframe, when MTCH is multiplexing on MCH, for the complete MBSFN subframe that MTCH priority allocation is continuous is used.Here, when the remaining data volume of MTCH can not be filled a full complete MBSFN subframe, there are two kinds of processing modes, first kind of way: this MTCH can carry out multiplexing with other MTCH in this subframe.Can be take PRB, OFDM symbol, subcarrier or cluster of subcarriers as base unit when multiplexing.The second way: this MTCH does not carry out multiplexingly with other MTCH, only carries this MTCH in this subframe.
The data volume of MTCH own just can not be filled in the situation of a full MBSFN subframe, also has two kinds of processing modes, first kind of way: directly this MTCH and other MTCH, or carry out in subframe multiplexing with for example unicast service data of non-MBMS business datum.Can be take PRB, OFDM symbol, subcarrier or cluster of subcarriers as base unit when multiplexing.The second way: this MTCH does not carry out multiplexing with other MTCH.
The second, for the MBMS business of single cell pattern, MTCH data volume exceedes in the situation of a subframe, during multiplexing on sub-frame data territory of MTCH, is that the continuous complete subframe of MTCH priority allocation is used.Here, when the remaining data volume of MTCH can not be filled a full complete subframe, the mode of employing is: this MTCH can carry out multiplexing with other MTCH or for example unicast service data of non-MBMS business datum in this subframe.Can be take PRB, OFDM symbol, subcarrier or cluster of subcarriers as base unit when multiplexing.
The data volume of MTCH own just can not be filled in the situation of a full MBSFN subframe, directly this MTCH and other MTCH or for example unicast service data of non-MBMS business datum is carried out in subframe multiplexing.Can be take PRB, OFDM symbol, subcarrier or cluster of subcarriers as base unit when multiplexing.
Here it is to be noted: the implementation method of the MTCH carrying that the present invention describes, is also applicable to the realization of MCH carrying.Only MTCH need to be replaced with to MCH.
Here it is to be noted: with the current existing technology of LTE as a setting, introduce the present invention and specifically how to apply.Subframe internal resource under the Cyclic Prefix (CP, Cyclic Prefix) that is to expand in example is below that example is described.Expansion CP and standard C P cause the difference of subframe internal resource to be: during expansion CP, an inherent time orientation of subframe is 12 OFDM symbols; During standard C P, an inherent time orientation of subframe is 14 OFDM symbols.In LTE, the resource in a subframe obtains different Resource Block according to different division methods at present.For example, Resource Block can obtain the Resource Block take OFDM symbol as unit, also can obtain the Resource Block take PRB as unit, also can obtain the Resource Block take subcarrier or cluster of subcarriers as unit.At present, stipulate that front 1 or 2 OFDM of MBSFN subframe are for carrying PDCCH in LTE R9, for unicast service is served, remaining resource is for MBMS transmission business, is used for specifically carrying MTCH, do not carry unicast service.Do in the good a series of MBSFN subframes of system configuration, how to be the resource that each MTCH distributes oneself so? below to the elaboration of giving an example of the present invention's content described above.Example below if not otherwise specified, all thinks that each MTCH correspondence only carries the data of a MBMS business.And example one and example two are: the specific implementation of MTCH carrying; Example three～example five is: MTCH is carried on multiplexing specific implementation in MBSFN subframe; Example six is: MTCH is take MBSFN subframe as the multiplexing specific implementation of base unit.
The example one, two, three, four, six, seven of concrete application is below to be also applicable to MCH, only needs MTCH in example one, two, three, four, six, seven to replace with MCH.
Example one: for the situation that exceedes a MBSFN subframe for MTCH average amount, system side is distributed corresponding bearing resource according to the data volume of the carrying of each MTCH for it.Specifically, for distributing continuous MBSFN subframe, each MTCH is used for the data of bearing MBMS service.The upper forward subframe of high priority data filling time of this MTCH, when the remaining data volume of this MTCH is filled a full last MBSFN subframe not, can be according to following two kinds of mode processing.
First kind of way: continue to fill last MBSFN subframe take PRB, OFDM symbol, subcarrier or cluster of subcarriers as base unit, but this MBSFN subframe is no longer carried other MTCH data.The second way: continue to fill take PRB, OFDM symbol, subcarrier or cluster of subcarriers as base unit last MBSFN subframe, allow other MTCH to continue to fill take PRB, OFDM symbol, subcarrier or cluster of subcarriers as base unit for the remaining resource of this MBSFN subframe.
Multiplexing reference in concrete subframe the following describes MTCH and in subframe, carries out multiplexing example three～example five.
Beneficial effect is: in the time of can not filling a full MBSFN subframe for the data volume of MTCH, allow the data of this part data and other MTCH multiplexing a subframe, can avoid like this waste of system resource.
Example two: for MTCH average amount hour, for example can not fill the situation of a full MBSFN subframe, a kind of simple processing method is: system side is directly distributed a MBSFN subframe for this MTCH, and in this MBSFN subframe, other MTCH of discord carry out multiplexing.Such resource is distributed the most easily realization, signaling consumption minimum, but the resource utilization of system is lower.Other processing method is: system side is assessed the data volume of each MTCH, after multiple suitable MTCH bindings, can fill a full MBSFN subframe, or approaches very much the full MBSFN subframe of filling.System side is all distributed in these MTCH in a MBSFN subframe, and multiple MTCH carry out multiplexing take PRB or OFDM symbol, subcarrier or cluster of subcarriers as base unit in MBSFN subframe.Wherein, for the data volume of the each MTCH of assessment, and multiple suitable MTCH bindings, be exactly in fact will to carry multiple MTCH bindings of the MBMS business with identical QOS demand, a MBMS business of a MTCH carrying here.
Here, give a kind of MTCH of avoiding and can not fill the completely specific implementation of a MBSFN subframe situation far away, specifically, further the data of multiple MBMS business directly can be bundled in to a MTCH upper, by a MTCH, transmit.The principle that now bundlees MBMS business is by the binding of multiple MBMS business datums, finally makes the data volume after its binding can fill a full integer MBSFN subframe, or approaches very much the full integer MBSFN subframe of filling.Wherein, being directly bundled in a MTCH upper for the data of multiple MBMS business, is exactly to be in fact directly bundled in the upper transmission of a MTCH by carrying the MBMS business with identical QOS demand, and a MTCH here carries multiple MBMS business.
Multiplexing reference in concrete subframe the following describes MTCH and in subframe, carries out multiplexing example three～example five.
Example three is: one or more MTCH carries take PRB as base unit in MBSFN subframe, and realizes multiplexing.
As shown in Figure 4, in subframe, a MTCH is expressed as to MTCH1, take PRB as base unit, carries; Another MTCH that is different from MTCH1 is expressed as to MTCH2, also take PRB as base unit, carries, so also just realized multiplexing in subframe of multiple MTCH.When the part resource in PRB is by other information, such as, when system message, control information etc. are used, should from this PRB, remove occupied resource.
Beneficial effect is: for MTCH is used the PRB of the unicast service of current LTE regulation, the maximum utilance of elevator system resource in MTCH carrying, avoids the waste of system resource like this.Distribute similarly to unicast service resource, can directly use the control signal form of existing unicast service.
Example four is: MTCH carries take OFDM as base unit in MBSFN subframe, and realizes multiplexing.
As shown in Figure 3, in subframe, a MTCH is expressed as to MTCH1, take OFDM symbol as base unit, carries; Another MTCH that is different from MTCH1 is expressed as to MTCH2, also take OFDM symbol as base unit, carries, so also just realized multiplexing in subframe of multiple MTCH.When the part resource in OFDM symbol is by other information, such as system message, control information etc. during use, should be removed occupied resource from this OFDM symbol.And, in subframe, be used for carrying the OFDM symbol of MTCH, should be from after the OFDM symbol that in next-door neighbour's subframe, PDCCH is used.
Beneficial effect is: provide and between MTCH, carried out time division multiplexing, available smallest particles degree when OFDM symbol is LTE system time division multiplexing.The benefit of time division multiplexing maximum is to avoid terminal to receive own uninterested business, thus power saving.
Example five is: in subframe, MTCH and unicast service data are carried out multiplexing take PRB as base unit.It is that MBSFN subframe is also for example unicast service subframe of non-MBSFN subframe that the subframe here is not distinguished, and both all can.Here supplement the difference of MBSFN subframe and unicast service subframe, MBSFN subframe is used expansion CP, before 1 or 2 OFDM symbol be used for carrying PDCCH; Unicast service subframe is used long CP or short CP, before 1 to 4 OFDM symbol be used for carrying PDCCH, wherein 4 OFDM symbol situation systems for 1.4M.
As shown in Figure 5, in subframe, a MTCH is expressed as to MTCH1, take PRB as base unit, carries; Another MTCH that is different from MTCH1 is expressed as to MTCH2, also take PRB as base unit, carries; Unicast service data, be that user's 1 data and user's 2 data are still carried take PRB as base unit, so also just realized multiplexing in subframe of MTCH and unicast service data.When the part resource in PRB is by other information, such as, when system message, control information etc. are used, should from this PRB, remove occupied resource.Herein, also be applicable to multicast control channel (MCCH, MulticastControl Channel), MBMS scheduling channel (MSCH, MBMS Scheduling Channel), MBMS notice indication information and unicast service data-reusing, only needing that MTCH is replaced with to MCCH or MSCH or MBMS notice indication information can implement.
Beneficial effect is: for MTCH is used the PRB of the unicast service of current LTE regulation, the maximum utilance of elevator system resource in MTCH carrying, avoids the waste of system resource like this.Distribute similarly to unicast service resource, can directly use the control signal form of existing unicast service.
Example six is: MTCH carries with subframe unit and be multiplexing.
For each MTCH distributes an integer complete subframe, be used for carrying, the part resource in this subframe, by other information, such as, when system message, control information etc. take, should be removed this part resource during carrying MTCH.Even when the data of MTCH can not be filled a full subframe, also must distribute a subframe.
Beneficial effect is: realizes simply, can avoid terminal to receive uninterested data, thus power saving.
Example seven is: MTCH carries take subcarrier or cluster of subcarriers as base unit in MBSFN subframe, and realizes multiplexing.
As shown in Figure 6, in subframe, a MTCH is expressed as to MTCH1, take subcarrier or cluster of subcarriers as base unit, carries; Another MTCH that is different from MTCH1 is expressed as to MTCH2, also take subcarrier or cluster of subcarriers as base unit carries, has so also just realized multiplexing in subframe of multiple MTCH.Be a subcarrier or cluster of subcarriers, these subcarriers or cluster of subcarriers can be continuous or discrete.When the part resource in subcarrier is by other information, such as system message, control information etc. during use, should be removed occupied resource from this subcarrier or cluster of subcarriers.
The subcarrier that the cluster of subcarriers here can be decided to be some forms a cluster of subcarriers, and forming the subcarrier of a cluster of subcarriers can continuously also can be discrete in actual frequency.In order to meet the principle of PRB scheduling in LTE, a cluster of subcarriers can be defined as by 12 subcarriers and form.
Beneficial effect is: provide and between MTCH, carried out frequency division multiplexing, available smallest particles degree when subcarrier is LTE system frequency division multiplexing.The benefit of frequency division multiplexing maximum is to obtain larger frequency diversity gain, improves the performance of business.
As shown in Figure 7, a kind of system that realizes of MTCH carrying, this system comprises: allocation units and load bearing unit.Wherein, allocation units comprise two kinds of specific implementations, the first specific implementation: allocation units are for exceeding under a MBSFN subframe state in the data volume of MTCH carrying, for each MTCH distributes continuous, complete, multiple MBSFN subframes, multiple MBSFN subframes of distributing are offered to load bearing unit and use; The second specific implementation: allocation units, for not exceeding under a MBSFN subframe state in the data volume of MTCH carrying, for each MTCH distributes a MBSFN subframe, offer load bearing unit by a MBSFN subframe of distributing and use.Load bearing unit also comprises two kinds of specific implementations, the first specific implementation: load bearing unit, for using multiple MBSFN subframes of distribution, is realized the Deta bearer of MTCH; The second specific implementation: load bearing unit, for using a MBSFN subframe of distribution, is realized the Deta bearer of MTCH.
Here, load bearing unit is further used for using in multiple MBSFN subframe situations of distributing, upper forward MBSFN subframe of the high priority data filling time of MTCH carrying.
Here, load bearing unit also comprises Multiplexing module, and the specific implementation of Multiplexing module comprises following several situation, below respectively set forth.
The first situation: under many cell patterns, use multiple MBSFN subframes to realize in the Deta bearer situation of MTCH, a kind of specific implementation is: Multiplexing module is not for filling in the remaining data volume of current MTCH under a full complete current MBSFN subframe state, by multiplexing in current MBSFN subframe to current MTCH and other MTCH; Another kind of specific implementation is: Multiplexing module is for not filling in the remaining data volume of current MTCH under a full complete current MBSFN subframe state, and current MTCH is not multiplexing in current MBSFN subframe with other MTCH.
The second situation: under many cell patterns, use a MBSFN subframe to realize in the Deta bearer situation of MTCH, a kind of specific implementation is: Multiplexing module can not be filled a full complete MBSFN subframe for the data volume of current MTCH self, directly by multiplexing in MBSFN subframe to current MTCH and other MTCH; Another kind of specific implementation is: Multiplexing module can not be filled a full complete MBSFN subframe for the data volume of current MTCH self, and current MTCH is not multiplexing in MBSFN subframe with other MTCH.
The third situation: under single cell pattern, use multiple subframes to realize in the Deta bearer situation of MTCH, Multiplexing module can not be filled a full complete current subframe for the remaining data volume of current MTCH, and current MTCH and other MTCH or unicast service data are carried out multiplexing in current subframe.
The 4th kind of situation: under single cell pattern, use a subframe to realize in the Deta bearer situation of MTCH, Multiplexing module can not be filled a full complete subframe for the data volume of current MTCH self, directly by multiplexing in subframe to current MTCH and other MTCH or unicast service data.
The 5th kind of situation: under many cell patterns, use a MBSFN subframe to realize the Deta bearer of MTCH, and under a MBMS service conditions of a MTCH carrying, Multiplexing module is for carrying after multiple MTCH bindings of the MBMS business with identical QOS demand, for the multiple MTCH after binding distribute a MBSFN subframe, make the multiple MTCH after binding fill or approach very much the full MBSFN subframe of filling; Multiple MTCH after binding, in MBSFN subframe, carry out multiplexing take PRB or OFDM symbol as base unit.
The 6th kind of situation: under many cell patterns, use an integer MBSFN subframe to realize the Deta bearer of MTCH, and under at least two MBMS service conditions of a MTCH carrying, Multiplexing module, for being directly bundled in the upper transmission of a MTCH by carrying the MBMS business with identical QOS demand, makes a MTCH after binding fill or approach very much the full integer MBSFN subframe of filling; A MTCH after binding, in MBSFN subframe, carries out multiplexing take PRB or OFDM symbol as base unit.
It is to be noted: in specification of the present invention, give tacit consent to each MTCH and only carry the data of a MBMS business.If when each MTCH can carry the data of one or more MBMS business, the present invention also can use, and the data that only MTCH in specification need to be replaced with to MBMS business on an equal basis can be implemented.
The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention.
Claims (7)
1. an implementation method for multimedia broadcasting and multicasting service transmission channel bearing, is characterized in that, the method comprises:
When the data volume of multimedia broadcasting and multicasting service transmission channel MTCH carrying exceedes a multimedia broadcasting single frequency network MBSFN subframe, for distributing at least two continuous MBSFN subframes, uses each MTCH, realize the Deta bearer of MTCH, the upper forward MBSFN subframe of high priority data filling time of MTCH carrying;
When the data volume of MTCH carrying does not exceed a MBSFN subframe, for distributing a MBSFN subframe, uses each MTCH, realize the Deta bearer of MTCH; Wherein,
Under the multimedia broadcasting of Duo community and multicast service MBMS business model, described in use, at least two MBSFN subframes realize in the Deta bearer situation of MTCH, when the remaining data volume of current MTCH can not be filled a full complete current MBSFN subframe, the multiplex mode adopting specifically comprises: by described current MTCH and other MTCH in described current MBSFN subframe multiplexing or, current MTCH is not multiplexing in current MBSFN subframe with described other MTCH;
Under the MBMS business model of Duo community, use a described MBSFN subframe to realize in the Deta bearer situation of MTCH, when the data volume of current MTCH self can not be filled a full complete MBSFN subframe, the multiplex mode adopting specifically comprises: directly by current MTCH and other MTCH in described MBSFN subframe multiplexing or, current MTCH is not multiplexing in MBSFN subframe with other MTCH;
Under the MBMS business model of Dan community, described in use, at least two subframes realize in the Deta bearer situation of MTCH, when the remaining data volume of current MTCH can not be filled a full complete current subframe, the multiplex mode of employing specifically comprises: described current MTCH and other MTCH or unicast service data are carried out multiplexing in described current subframe;
Under the MBMS business model of Dan community, use a described subframe to realize in the Deta bearer situation of MTCH, when the data volume of current MTCH self can not be filled a full complete subframe, the multiplex mode of employing specifically comprises: directly by multiplexing in described subframe to current MTCH and other MTCH or unicast service data.
2. method according to claim 1, is characterized in that, carries out the described base unit adopting when multiplexing and comprises: Physical Resource Block PRB or orthogonal frequency division multiplex OFDM symbol, subcarrier or cluster of subcarriers.
3. method according to claim 1, is characterized in that, described subframe comprises: MBSFN subframe or non-multicast service subframe.
4. method according to claim 1, is characterized in that, carries out the described base unit adopting when multiplexing and comprises: PRB.
5. method according to claim 1, it is characterized in that, under the MBMS business model of Duo community, use a described MBSFN subframe to realize the Deta bearer of MTCH, and under a MBMS service conditions of a MTCH carrying, the multiplex mode adopting specifically comprises: will carry after at least two MTCH bindings of the MBMS business with same services quality requirement, for at least two MTCH after binding distribute a MBSFN subframe, make at least two MTCH after binding fill a full MBSFN subframe; At least two MTCH after described binding, in described MBSFN subframe, carry out multiplexing take PRB, OFDM symbol, subcarrier or cluster of subcarriers as base unit;
Under the MBMS business model of Duo community, use an integer MBSFN subframe to realize the Deta bearer of MTCH, and under at least two MBMS service conditions of a MTCH carrying, the multiplex mode adopting specifically comprises: by carrying the MBMS business with same services quality requirement, be directly bundled in the upper transmission of a MTCH, make a MTCH after binding fill a full integer MBSFN subframe; A MTCH after described binding, in MBSFN subframe, carries out multiplexing take PRB, OFDM symbol, subcarrier or cluster of subcarriers as base unit.
6. the system that realizes of multimedia broadcasting and multicasting service transmission channel bearing, is characterized in that, this system comprises: allocation units and load bearing unit; Wherein,
Allocation units, exceed under a MBSFN subframe state for the data volume in MTCH carrying, for each MTCH distributes continuous, at least two MBSFN subframes, described at least two MBSFN subframes of distributing are offered to described load bearing unit and use; Or, in the data volume of MTCH carrying, do not exceed under a MBSFN subframe state, for each MTCH distributes a MBSFN subframe, a described MBSFN subframe of distributing is offered to described load bearing unit and use;
Load bearing unit, for using described at least two MBSFN subframes of distribution, realizes the Deta bearer of MTCH, the upper forward MBSFN subframe of high priority data filling time of MTCH carrying; Or, use a described MBSFN subframe of distributing, realize the Deta bearer of MTCH; Wherein,
Described load bearing unit also comprises: Multiplexing module, under the MBMS business model of Duo community, described in use, at least two MBSFN subframes realize in the Deta bearer situation of MTCH, described Multiplexing module, for the remaining data volume of current MTCH, can not fill a full complete current MBSFN subframe, by described current MTCH and other MTCH in described current MBSFN subframe multiplexing or, current MTCH is not multiplexing in current MBSFN subframe with described other MTCH;
Under the MBMS business of Duo community, use a described MBSFN subframe to realize in the Deta bearer situation of MTCH, described Multiplexing module, for the data volume of current MTCH self, can not fill a full complete MBSFN subframe, directly by current MTCH and other MTCH in described MBSFN subframe multiplexing or, current MTCH is not multiplexing in MBSFN subframe with other MTCH;
Described Multiplexing module also for, under the MBMS business model of Dan community, described in use, at least two subframes realize in the Deta bearer situation of MTCH, described Multiplexing module, for the remaining data volume of current MTCH, can not fill a full complete current subframe, described current MTCH and other MTCH or unicast service data are carried out multiplexing in described current subframe;
Under the MBMS business model of Dan community, use a described subframe to realize in the Deta bearer situation of MTCH, described Multiplexing module, for the data volume of current MTCH self, can not fill a full complete subframe, directly by multiplexing in described subframe to current MTCH and other MTCH or unicast service data.
7. system according to claim 6, it is characterized in that, described Multiplexing module, under the MBMS business model of Duo community, use a described MBSFN subframe to realize the Deta bearer of MTCH, and under a MBMS service conditions of a MTCH carrying, described Multiplexing module, for carrying after at least two MTCH bindings of the MBMS business with same services quality requirement, for at least two MTCH after binding distribute a MBSFN subframe, make at least two MTCH after binding fill a full MBSFN subframe; At least two MTCH after described binding, in described MBSFN subframe, carry out multiplexing take PRB, OFDM symbol, subcarrier or cluster of subcarriers as base unit;
Under the MBMS business model of Duo community, use an integer MBSFN subframe to realize the Deta bearer of MTCH, and under at least two MBMS service conditions of a MTCH carrying, described Multiplexing module, for being directly bundled in the upper transmission of a MTCH by carrying the MBMS business with same services quality requirement, make a MTCH after binding fill a full integer MBSFN subframe; A MTCH after described binding, in MBSFN subframe, carries out multiplexing take PRB, OFDM symbol, subcarrier or cluster of subcarriers as base unit.
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| PCT/CN2010/072166 WO2010133121A1 (en) | 2009-05-21 | 2010-04-23 | Method and system for implementing multimedia broadcast multicast service traffic channel bearer |
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| CN103179577B (en) * | 2011-12-23 | 2016-01-13 | 上海贝尔股份有限公司 | A kind of for realizing the method and apparatus that frequency resource is shared in EMBMS |
| CN109413590B (en) * | 2017-08-16 | 2022-04-29 | 中兴通讯股份有限公司 | Service scheduling method and device |
| IT201800000832A1 (en) * | 2018-01-12 | 2019-07-12 | Inst Rundfunktechnik Gmbh | SENDER UND / ODER EMPFÄNGER ZUM SENDEN BZW. EMPFANGEN VON RUNDFUNKINFORMATIONSSIGNALEN |
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| CN1910841A (en) * | 2004-05-06 | 2007-02-07 | Lg电子株式会社 | Transmitting and receiving notification of control information for point to multipoint service in wireless communication system |
| CN101296407A (en) * | 2007-04-23 | 2008-10-29 | 大唐移动通信设备有限公司 | MBMS transmission method and device for multi-carrier wave mobile communication system |
| WO2008151069A1 (en) * | 2007-05-30 | 2008-12-11 | Qualcomm Incorporated | Method and apparatus for sending scheduling information for broadcast and multicast services in a cellular communication system |
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| CN1910841A (en) * | 2004-05-06 | 2007-02-07 | Lg电子株式会社 | Transmitting and receiving notification of control information for point to multipoint service in wireless communication system |
| CN101296407A (en) * | 2007-04-23 | 2008-10-29 | 大唐移动通信设备有限公司 | MBMS transmission method and device for multi-carrier wave mobile communication system |
| WO2008151069A1 (en) * | 2007-05-30 | 2008-12-11 | Qualcomm Incorporated | Method and apparatus for sending scheduling information for broadcast and multicast services in a cellular communication system |
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