CN101938699B - Data transmission method and device of multicast channel - Google Patents
Data transmission method and device of multicast channel Download PDFInfo
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- H04W72/30—Resource management for broadcast services
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- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
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Abstract
The invention discloses a data transmission method and device of a multicast channel. The data transmission method of the multicast channel comprises the step of bearing a transmission block which transmits data for broadcasting multicast service on respective subframes of the multicast channel, wherein the data in respective transmission blocks is independently formed by data from one logic channel, or formed by blending the data from a plurality of different logic channels; and the logic channel comprises an MBMS (Multimedia Broadcast Multicast Service) control channel and an MBMS service channel. According to the invention, data in the transmission block corresponds to the specific logic channel, thereby the data transmission efficiency of the MCH (Multicast Channel) is improved.
Description
Technical field
The present invention relates to mobile communication technology field, particularly relate to a kind of data transmission method and device of Multicast Channel.
Background technology
At present, Mobile data multimedia service and various high bandwidth multimedia service more come to carry many, such as, video conference, television broadcasting, video request program, advertisement, online education, interactive game etc., the multiple user of these Mobile data multimedia service requirements can receive identical data simultaneously, compared with general data service, the data of Mobile data multimedia business transmission 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 (3rdGeneration Partnership Project, referred to as 3GPP) propose multimedia broadcast multi-broadcasting business (Multimedia Broadcast and Multicast Service, referred to as MBMS), this business is a kind of technology transmitting data from a data source to multiple target, achieve sharing of network (comprising core net and Access Network) resource, improve the utilance of Internet resources (especially air interface resource).
In LTE, MBMS can adopt mixed carrier mode to send, mixed carrier mode refers to that unicast service (Unicast) and multicast service (MBMS) send in a time multiplexed manner on same carrier wave, and time-multiplexed least unit is subframe.Specify in current LTE, use dual unit method to configure radio frames and the subframe of bearing MBMS service, specifically describe as follows:
The first order realizes the radio frames configuration of carrying MBMS, meets equation SFNmod radioFrameAllocationPeriod=radioFrameAllocationOffset below.
Wherein System Frame Number (System Frame Number, referred to as SFN) is numbered for the radio frames of system, and value is from 0 to 1023.RadioFrameAllocationPeriod represents the cycle of multicast service radio frames (MBSFN), it can be got in 1,2,4,8,16,32} any one.RadioFrameAllocationOffset represents the skew of MBSFN radio frames, and its value is integer and is less than the numerical value of 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 carrying MBMS radio frames that is configured to is called MBSFN radio frames.
The second level realizes those subframe bearing MBMS services concrete in carrying MBMS radio frames, use the method for bitmap, owing to specifying frequency division duplex mode (FrequencyDivision Duplex in LTE, referred to as FDD) subframe #0 under pattern, #4, #5, #9 can not bearing MBMS services, subframe #0 under tdd mode, #1, #5, #6 can not bearing MBMS services, so use the bitmap of 6 bits to describe which subframe bearing MBMS service in remaining 6 subframes.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 Broadcast Control Channel (Broadcast ControlChannel, referred to as BCCH), therefore, the sub-frame configuration in the MBSFN radio frames within each BCCH amendment cycle can not change.In above-mentioned MBSFN radio frames, the subframe of bearing MBMS service is called MBSFN sub-frame, also referred to as multicast subframe.
At present, front 1 or 2 OFDM (Orthogonal Frequency Division Multiplexing of MBSFN sub-frame in LTE, referred to as OFDM) symbol is for transmitting the control information of clean culture (Unicast) business, also referred to as Physical Downlink Control Channel (Physical Downlink Control Channel, referred to as PDCCH), in this subframe, remaining resource is used for sending MBMS or other business.
The configuration of MBSFN radio frames and MBSFN sub-frame can be realized by the method for above-mentioned dual unit, the MBSFN sub-frame configured constitutes the physical resource of actual transmissions MBMS, i.e. Physical Multicast Channel (Physical Multicast Channel, referred to as PMCH).PMCH carries Multicast Channel (Multicast Channel, referred to as MCH).MCH is the multicast transmission channel that LTE specifies, a series of MBSFN sub-frame configured by the collocation method by dual unit are formed.Further, also by certain rule, MBSFN sub-frame can be divided into multiple MCH in LTE.Such as, using the part MBSFN sub-frame in the MBSFN sub-frame that configured by dual unit as MCH1, using remaining MBSFN sub-frame as MCH2.
Current, the also technical scheme how to be made up of the data of those logic channels of the transmission block (TransportBlock, referred to as TB) of a not mentioned MCH in correlation technique.
Which logical channel data composing method the present invention gives the TB of a MCH by by com-parison and analysis.Provide the carrying unit of TB in subframe further.
Summary of the invention
In view of this, the invention provides data transmission method and the device of a kind of MCH, in order to solve in prior art the problem not having to specify the TB being made up of MCH the data of those logic channels.
According to an aspect of the present invention, the data transmission method of a kind of MCH is provided.
Data transmission method according to MCH of the present invention comprises: the data carrying a transport block transmission BroadCast MultiCast Service in each subframe of Multicast Channel respectively, wherein, data in each transmission block are made up of the Dynamic data exchange of a logic channel, or, be made up of the data mixing of multiple different logic channel, wherein, logic channel comprises: MBMS Control Channel and MBMS channel.
According to another aspect of the present invention, the data transmission device of a kind of MCH is provided.
Data transmission device according to MCH of the present invention comprises: setting unit and transmission unit.Wherein, setting unit, for arranging each transmission block that each subframe of MCH carries, wherein, data in each transmission block are made up of the Dynamic data exchange of a logic channel, or, be made up of the data mixing of multiple different logic channel, wherein, logic channel comprises: MBMS Control Channel and MBMS channel; Transmission unit, each subframe that each transmission block for being arranged by setting unit is carried on MCH is respectively transmitted.
By at least one scheme above-mentioned of the present invention, when each subframe of MCH carries the data of a transport block transmission MBMS respectively, data in each transmission are by a MBMS Control Channel (Multicast Control Channel, referred to as MCCH) or MBMS channel (MBMS Traffic Channel, referred to as MTCH) Dynamic data exchange composition, or be made up of the data mixing of multiple logic channel (comprising MCCH and MTCH), solve in prior art the problem not having to specify the TB being made up of MCH the data of those logic channels, can be corresponding with concrete logic channel by the data in TB, thus improve the data transmission efficiency of MCH.
Other features and advantages of the present invention will be set forth in the following description, and, partly become apparent from specification, or understand by implementing the present invention.Object of the present invention and other advantages realize by structure specifically noted in write specification, claims and accompanying drawing and obtain.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, together with embodiments of the present invention for explaining the present invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the schematic diagram of the data composition in the embodiment of the present invention in a MCH in each TB;
Fig. 2 is the data in the embodiment of the present invention in TB take PRB as the schematic diagram that base unit carries in subframe;
Fig. 3 is the structural representation of the data transmission device of MCH according to the embodiment of the present invention.
Embodiment
Functional overview
For there is no the problem specifying the TB being made up of MCH the data of those logic channels in prior art, embodiments provide data transmission method and the device of a kind of MCH.In embodiments of the present invention, when each subframe of MCH carries the data of a transport block transmission MBMS respectively, data in each transmission block of MCH can be made up of the Dynamic data exchange of a logic channel, also can be made up of the data mixing of multiple different logic channel, preferably, in embodiments of the present invention, logic channel refers to MCCH channel and/or MTCH channel.
When not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
According to the embodiment of the present invention, provide firstly the data transmission method of a kind of MCH.
MCH data transmission method according to the embodiment of the present invention comprises: the data carrying a transport block transmission MBMS in each subframe of MCH respectively.
Particularly, in embodiments of the present invention, during data by MCH MBMS transmission business, the data be carried in the TB in each subframe of MCH are made up of the Dynamic data exchange of a certain logic channel, or are made up of the data mixing of multiple different logic channel.Logic channel in embodiments of the present invention comprises: MBMS Control Channel (MCCH), MBMS channel (MTCH).When MTCH channel comprises multiple MTCH channel, MTCH can be divided into MTCH1, MTCH2 etc., between each MTCH channel, (such as, MTCH1 and MTCH2) can think different logic channels in embodiments of the present invention.
And, in embodiments of the present invention, can also comprise in the data of composition TB: MBMS dynamic scheduling information (Dynamic scheduling information), in a particular application, also upper level logical channels corresponding for dynamic scheduling information can be called MBMS scheduling channel (MBMS Scheduling Channel, referred to as MSCH).
In addition, in embodiments of the present invention, form in the data of TB and can also comprise: MBMS notifies indication information.
In specific implementation process, if the data in each transmission block are made up of the Dynamic data exchange of a logic channel, namely only comprise the data of a logic channel in a transmission block, then specifically can form each transmission block in such a way:
(1) transmission block belonging to MCCH is made up of the Dynamic data exchange of the MCCH be carried on MCH;
(2) form by the Dynamic data exchange of the MTCH be carried on MCH the transmission block belonging to this MTCH.
Or, in embodiments of the present invention, also can by MBMS dynamic scheduling information independent bearing in a TB, and, also MBMS can be notified that indication information independent bearing is in a TB, therefore, can also form each transmission block in such a way:
(3) independently form by the MBMS dynamic scheduling information be carried on MCH the transmission block belonging to this MBMS dynamic scheduling information;
(4) notify that indication information independently forms by the MBMS be carried on MCH and belong to the transmission block that this MBMS notifies indication information.
And for the transmission block that the data mixing by multiple different logic channel forms, can one of in such a way this transmission block of composition:
(1) be made up of the data mixing of the multiple MTCH channels be carried on MCH;
(2) be made up of the data of the MCCH be carried on MCH and the data mixing of one or more MTCH channel.
Further, if the data forming this TB also comprise MBMS schedule information, then this TB can also basis form with one of under type:
(3) be made up of the MCCH be carried on MCH and the mixing of MBMS dynamic scheduling information;
(4) be made up of the data mixing of the MBMS dynamic scheduling information be carried on MCH and one or more MTCH;
(5) be made up of the data of the MCCH be carried on MCH, the data of one or more MTCH and MBMS dynamic scheduling information.
After the data composition of each transmission block determining MCH, through default handling process (such as, modulation, coding, intertexture etc.) after, by the data of TB in the subframe of MCH with Physical Resource Block (Physical Resource Block, referred to as PRB) or OFDM symbol or subcarrier or cluster of subcarriers be that unit carries, wherein, the subframe of MCH can be multicast subframe, also can be unicast sub-frame.
For further illustrating the technical scheme that the embodiment of the present invention provides, being introduced for LTE below, at present, in LTE, define MCCH, MTCH, and MCCH and MTCH being mapped to MCH.In addition, in LTE, also may will introduce MSCH, MSCH is also mapped on MCH, also by introducing MBMS announcement information, MBMS announcement information also may be mapped on MCH.Suppose in the following examples to have introduced MSCH and MBMS announcement information in LTE.
Embodiment one
The TB of a MCH is made up of the Dynamic data exchange of the MCCH be carried on this MCH in the present embodiment; The TB of another MCH is made up of the Dynamic data exchange of the some MTCH be carried on this MCH.
The TB composing principle of the present embodiment MCH is: the Dynamic data exchange belonging to MCCH is placed on one or more TB, that is, some or multiple TB only comprise the data of MCCH, can not comprise the data of MTCH or other logic channels in the TB comprising MCCH data.Due in LTE system, physical layer is carried out for being organized in of TB, and therefore, system side, in the process of composition TB, must follow mentioned above principle.
In specific implementation process, media access control layer (Medium Access Control, referred to as MAC) a Medium Access Control (MAC) Protocol Data Unit (Protocol Data Unit, referred to as PDU) in can comprise multiple MAC service data unit (Service Data Unit, referred to as SDU), a MAC PDU of MAC layer exports a rear corresponding one-tenth TB from MAC layer.Therefore, in the present embodiment, only comprise a logic channel or sub-logic channel to reach a TB (logic channel comprises: MCCH, MSCH, MTCH etc., if MTCH comprises multiple MTCH, such as, MTCH1 and MTCH2, be then called the sub-logic channel of MTCH in the present embodiment by MTCH1 and MTCH2) data, need to limit the source (i.e. logic channel) of the MAC SDU comprised in a MAC PDU.
Due in system side, the mark of a logic channel is comprised in each MAC SDU, this mark is used to indicate MAC SDU and belongs to which logic channel, therefore, in the present embodiment, in order to make the data only comprising MCCH channel in each TB, can according to the mark of the logic channel of MACSDU, the MAC SDU being designated MCCH logic channel of logic channel is connected, a MAC PDU is formed by the one or more MAC SDU being designated MCCH of logic channel, thus make the data only comprising MCCH in this MAC PDU, then by the output of this MAC PDU, final correspondence becomes a TB, and then ensure that this TB only comprises the data of MCCH.
According to the present embodiment, the data of a composition TB as shown in Figure 1, in FIG, only comprise the data of MCCH in TB1.
The TB of a MCH is made up of to the situation of the TB belonging to this MTCH the Dynamic data exchange of the some MTCH be carried on this MCH, the operation identical with above-mentioned MCCH can be adopted, make the data only comprising MTCH in the TB of a MCH.
When MTCH exists the sub-logic channel of multiple different MTCH, such as MTCH1, MTCH2 etc., can connect its MACSDU according to the mark of the sub-logic channel of each MTCH respectively, to obtain the TB of the data only comprising a sub-logic channel of MTCH.Detailed process is identical with the process that the above-mentioned TB only comprising the data of MCCH obtains, and is not repeating at this.
The operation identical with above-mentioned MCCH can be adopted, to obtain the TB only comprising MBMS dynamic scheduling information for MSCH.
In order to further describe the beneficial effect of the present embodiment, be described with instantiation below.
Suppose that only there is a MCH in a certain MBSFN region, and comprise 3 different MTCH, be designated as MTCH1, MTCH2, MTCH3.Comprise a MCCH in addition.According to the present embodiment, the data for MCCH form a TB, are designated as TB-MCCH; For each MTCH forms independently TB respectively, be designated as TB-MTCH1, TB-MTCH2, TB-MTCH3.Then these 4 TB are mapped to respectively allocate in advance belong in the subframe of this MCH, each subframe carries a TB, and sends.In the present embodiment, suppose that the resource of each TB of MCH is allocated in advance, and notice gives terminal.Then receiving terminal (i.e. terminal) is according to the information of the Resourse Distribute known in advance, if now terminal needs the data receiving MCCH and MTCH2, then terminal can according to the information of Resourse Distribute, determine the subframe (namely only comprising the subframe at the TB place of the data of MCCH and MTCH2) needing to receive, then, terminal starts the subframe of receiving package containing MCCH TB in place, (parsing comprises Base-Band Processing process in parsing, detailed process is similar to prior art, repeats no more in the present embodiment) wherein data.Secondly receiving package is containing the subframe of MTCH2 TB, and resolves wherein data.
Owing to only comprising the business datum of terminal needs in the TB of transmitting terminal, therefore, the data that terminal parses goes out in the present embodiment are all effective, thus the data mixing of multiple logic channel can be avoided when a TB, cause in the data of terminal parses and include unwanted data, cause the problem of the waste of the electric energy to terminal.
Embodiment two
In the present embodiment, the TB of a MCH forms by the data mixing of the multiple MTCH be carried on this MCH the TB belonging to these MTCH; The TB of a MCH forms with the data mixing in one or more MTCH the TB belonging to MCCH and these MTCH by the data of the MCCH be carried on this MCH.
In MAC layer, after being mapped to a TB after the MAC PDU belonging to a MCCH exports, this TB due to data volume can not fill a full subframe less time, the waste of resource can be caused.Therefore, allow the data mixing of different logic channels in the present embodiment in a TB, thus effectively can ensure that a TB fills a full subframe, avoid the waste of resource.
The present embodiment and the difference of embodiment one are the data allowing to comprise multiple different logic channel in a TB, such as, MCCH and MTCH shares a TB, namely being included in a TB after the data mixing of MCCH and MTCH, also the data mixing of multiple different MTCH is allowed to be included in a TB, such as, be included in a TB after the data mixing of MTCH1 and MTCH2.
In the present embodiment, in order to the data mixing of the data of MCCH and one or more MTCH is formed a TB, in the present embodiment, suppose to need by the data of MCCH and the data mixing of MTCH1 in a TB, then can carry out following process in MAC layer: according to the Logic Channel Identifier in the MAC SDU of MCCH and MTCH1, the MAC SDU belonging to MCCH and MTCH1 is connected in a MAC PDU, then, after MAC PDU exports, correspondence can become a TB comprising the data of MCCH and MTCH1, concrete TB2 as shown in Figure 1.
For multiple different MTCH data mixing in a TB, such as, MTCH2 and MTCH3 is blended in a TB (in the present embodiment, this TB being called TBII), its operation is identical with the operation of data mixing in a TB of MCCH and MTCH1.
Composition above-mentioned TB after, by formed each TB be mapped to respectively allocate in advance belong in the subframe of this MCH, each subframe carries a TB, and sends.In the present embodiment, suppose that the resource of each TB has been allocated in advance and has been notified of terminal.
Receiving terminal is according to the resource allocation information known in advance, if terminal needs the data receiving MCCH and MTCH2, then terminal can according to resource allocation information, determine the subframe needing to receive, start the subframe of receiving package containing the TB of MCCH and MTCH1 afterwards, resolve (parsing comprises Base-Band Processing process) wherein data.Secondly receiving package is containing the subframe of the TB of MTCH2 and MTCH3, and resolves wherein data.
In specific implementation process, the composing method of the TB that embodiment one and embodiment two can be provided effectively combines, during concrete enforcement, the data can paid the utmost attention in a TB are made up of the data of a logic channel, when the data by a logic channel can not fill a full TB, the data of the logic channel mixing other in this TB can be considered.Thus namely can reduce the waste of the electric energy of terminal, also can avoid the waste of resource.
Embodiment three
In the present embodiment, the TB of a MCH is made up of the TB belonging to this MSCH the Dynamic data exchange of the MSCH be carried on this MCH; By the MBMS be carried on this MCH, the TB of a MCH notifies that indication information (MBMS Notification Indication) independently forms and belongs to the TB that MBMS notifies indication information.
In the present embodiment, by the data of a MSCH composition independently TB, in this TB, the data of MTCH or other logic channels are not comprised.Specific implementation is identical with in embodiment one, the data of MCCH form a TB, repeats no more here.Equally, the process of its beneficial effect and receiving terminal is also all similar.
In addition, MBMS is notified that indication information independently forms the operation of a TB also identical with the operation of the TB of MSCH.
Embodiment four
In the present embodiment, the TB of a MCH is made up of the TB belonging to this MCCH and MSCH the data mixing of MCCH, MSCH of being carried on this MCH; The TB of a MCH is made up of the TB belonging to this MCH the MSCH be carried on this MCH, one or more MTCH data mixing; The TB of a MCH is made up of the TB belonging to this MCH the MCCH be carried on this MCH, one or more MTCH, MSCH data mixing.
At the present embodiment, idiographic flow is similar to embodiment two, difference is, shares a TB at the present embodiment MCCH and MSCH or MTCH and MSCH or MCCH and MTCH and MSCH, and describe in embodiment two share the situation of a TB for MCCH and MTCH.But specific implementation process is similar to embodiment two, be all in MAC layer according to Logic Channel Identifier, the MAC SDU of the logic channel needing a shared TB is connected, form a MAC PDU, again this MAC PDU is exported, form the TB comprising the data of respective logical channels.
The schematic flow sheet being jointly made up of a TB (TB3 namely in Fig. 1) the data of MCCH, MSCH and MTCH has been shown in Fig. 1.
In specific implementation process, because the data volume of MCCH, MSCH is all less, the particularly data volume of MSCH, generally can not fill a full subframe, therefore, can MSCH be introduced, the data of MSCH and the data mixing of MCCH and/or MTCH be formed a TB, thus the wasting of resources can be avoided to greatest extent.
Embodiment five
In the present embodiment, the simple TB describing MCH in MBSFN sub-frame as how PRB or OFDM symbol or subcarrier or cluster of subcarriers be that base unit carries in subframe.
Fig. 2 is the data in the present embodiment in TB take PRB as the schematic diagram that base unit carries in subframe, as shown in Figure 2, define the Resource Block that PRB is the time-frequency bidimensional that time orientation and frequency direction are formed jointly in the present embodiment, for convenience of description, give the PRB of concrete size in fig. 2, when subframe adopts standard cyclic prefix (Normal CyclicPrefix), PRB selects 7 OFDM symbol, 12 subcarriers are formed; When subframe adopts extended cyclic prefix (Extended Cyclic Prefix), PRB selects 6 OFDM symbol, 12 subcarriers are formed.In addition, as the example that another kind is preferential, when subframe adopts standard cyclic prefix (Normal Cyclic Prefix), PRB selects 14 OFDM symbol, 12 subcarriers are formed; When subframe adopts extended cyclic prefix (Extended CyclicPrefix), PRB selects 12 OFDM symbol, 12 subcarriers are formed.In the present embodiment, when PRB is used for carrying data, the resource size of its carrying data needs the resource deducting the important informations such as bearing system information.
In the present embodiment, PRB when using extended cyclic prefix is described, in like manner implements for when standard cyclic prefix.In the present embodiment, OFDM symbol definition with define in LTE the same; For cluster of subcarriers, in the present embodiment, 12 subcarriers form a cluster of subcarriers, and the subcarrier in bunch can be continuous or discrete in frequency.Equally, the cluster of subcarriers for other numbers is also fine, and such as, cluster of subcarriers comprises the subcarrier of the different numbers such as 24,10,8,16.
In a MBSFN region, system can be used for carrying the physical resource of MCH data for this region allocation, suppose to be distributed the data that the MBSFN sub-frame determined is used for carrying this MCH in the present embodiment.Physical layer is that unit is carried in corresponding MBSFN sub-frame the data in the TB of upper layer transport according to PRB or OFDM symbol or subcarrier or cluster of subcarriers.Correspondingly, MCH TB is carried in unicast sub-frame in like manner operates.By in the PRB of the data-mapping in TB or OFDM symbol or subcarrier or cluster of subcarriers time, because the part resource in some PRB or OFDM symbol or subcarrier or cluster of subcarriers takies by important system information, therefore, the resource considering to be taken by system information is needed when carrying the data in TB.l
According to the embodiment of the present invention, additionally provide the data transmission device of a kind of MCH.
Fig. 3 is the structural representation of the data transmission device of MCH according to the embodiment of the present invention, and as shown in Figure 3, the data transmission device according to the MCH of the embodiment of the present invention mainly comprises: setting unit 31 and transmission unit 33.Wherein, setting unit 31 is for arranging each transmission block that each subframe of MCH carries, wherein, data in each transmission block are made up of the Dynamic data exchange of a logic channel, or, be made up of the data mixing of multiple different logic channel, wherein, logic channel comprises: MBMS Control Channel MCCH and MBMS channel MTCH; Transmission unit 33, each subframe that each transmission block for being arranged by setting unit 31 is carried on MCH is respectively transmitted.
As mentioned above, by the technical scheme that the embodiment of the present invention provides, if the data of a transmission block are made up of the data of a logic channel (comprising: MCCH and MTCH), owing to only comprising the business datum of terminal needs in the TB of transmitting terminal, therefore, the data that terminal parses can be made to go out are all effective, thus the data mixing of multiple logic channel can be avoided when a TB, cause in the data of terminal parses and include unwanted data, cause the problem of the waste of the electric energy to terminal, save the electric energy of terminal.If the data of a transmission block are made up of the data of multiple Different Logic channel, then can improve the utilance of the resource of this transmission block of transmission; Further, in embodiments of the present invention, the composition of each transmission block in MCH can adopt above-mentioned two kinds of modes to combine, thus can utilize resource to greatest extent, reduces the waste of the electric energy of terminal simultaneously.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a data transmission method of Multicast Channel MCH, is characterized in that, comprising:
Each subframe of MCH carries the data of a transport block transmission BroadCast MultiCast Service MBMS respectively, wherein, data in each transmission block are made up of the Dynamic data exchange of a logic channel, comprise: when the data by a described logic channel can not fill a full transmission block, in described transmission block, mix the data of other logic channel; Or be made up of the data mixing of multiple different logic channel, wherein, described logic channel comprises: MBMS Control Channel MCCH and MBMS channel MTCH; Wherein, each subframe of MCH carries a transmission block respectively comprise: each transmission block is mapped to respectively in the default subframe belonging to described MCH, each transmission block is carried in a subframe, and wherein, the subframe belonging to described MCH preset is multicast subframe or unicast sub-frame; For each transmission block, this transmission block is carried in a subframe and comprises: the data of described transmission block are carried in described subframe with one of following for unit: Physical Resource Block, OFDM symbol, subcarrier, cluster of subcarriers.
2. method according to claim 1, is characterized in that, forms a transmission block comprise by the Dynamic data exchange of a logic channel:
According to the mark of this logic channel, the media access control layer MAC service data unit SDU corresponding with this mark is connected, forms a Medium Access Control (MAC) Protocol Data Unit PDU by the MAC SDU corresponding with this mark;
Described MAC PDU is outputted to a transmission block, with the data making this transmission block only comprise described logic channel.
3. method according to claim 1 and 2, is characterized in that, for the transmission block that the Dynamic data exchange by a logic channel forms, the building form of this transmission block comprises one of following:
Be made up of the Dynamic data exchange of the MBMS Control Channel MCCH be carried on described MCH;
Be made up of the Dynamic data exchange of the MBMS channel MTCH be carried on described MCH.
4. method according to claim 3, is characterized in that, the building form of described transmission block also comprises:
Independently be made up of the MBMS dynamic scheduling information be carried on described MCH; And/or
Notify that indication information independently forms by the MBMS be carried on described MCH.
5. method according to claim 1, is characterized in that, forms a transmission block comprise by the data mixing of multiple different logic channel:
According to the mark of each logic channel, MAC SDU corresponding with the mark of each logic channel is respectively connected, form a MAC PDU by the MAC SDU corresponding with the mark of the plurality of logic channel;
Described MAC PDU is outputted to a transmission block, with the data making this transmission block comprise each logic channel described.
6. method according to claim 1 or 5, is characterized in that, for the transmission block that the data mixing by multiple different logic channel forms, the building form of this transmission block comprises one of following:
Be made up of the data mixing of the multiple MTCH channels be carried on described MCH;
Be made up of the data of the MCCH be carried on described MCH and the data mixing of one or more MTCH channel.
7. method according to claim 6, is characterized in that, the building form of described transmission block also comprises one of following:
Mixed by the MCCH be carried on described MCH and MBMS dynamic scheduling information and form;
Be made up of the data mixing of the MBMS dynamic scheduling information be carried on described MCH and one or more MTCH;
Be made up of the data of the MCCH be carried on described MCH, the data of one or more MTCH and MBMS dynamic scheduling information.
8. a data transmission device of MCH, is characterized in that, comprising:
Setting unit, for arranging each transmission block that each subframe of MCH carries, wherein, data in each transmission block are made up of the Dynamic data exchange of a logic channel, comprise: when the data by a described logic channel can not fill a full transmission block, in described transmission block, mix the data of other logic channel; Or be made up of the data mixing of multiple different logic channel, wherein, described logic channel comprises: MBMS Control Channel MCCH and MBMS channel MTCH; Wherein, each subframe of MCH carries a transmission block respectively comprise: each transmission block is mapped to respectively in the default subframe belonging to described MCH, each transmission block is carried in a subframe, and wherein, the subframe belonging to described MCH preset is multicast subframe or unicast sub-frame; For each transmission block, this transmission block is carried in a subframe and comprises: the data of described transmission block are carried in described subframe with one of following for unit: Physical Resource Block, OFDM symbol, subcarrier, cluster of subcarriers;
Transmission unit, each subframe that each transmission block for being arranged by described setting unit is carried on MCH is respectively transmitted.
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| CN200910151550.2A CN101938699B (en) | 2009-06-30 | 2009-06-30 | Data transmission method and device of multicast channel |
| PCT/CN2010/073831 WO2010145502A1 (en) | 2009-06-30 | 2010-06-11 | Data transmitting method and apparatus for multicast channel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910151550.2A CN101938699B (en) | 2009-06-30 | 2009-06-30 | Data transmission method and device of multicast channel |
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| CN101938699B true CN101938699B (en) | 2015-01-28 |
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Citations (3)
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| CN101159902A (en) * | 2007-10-26 | 2008-04-09 | 中兴通讯股份有限公司 | Time slot configuration method of carrier cell dedicated for multimedia broadcasting multicast system |
| WO2008084634A1 (en) * | 2007-01-10 | 2008-07-17 | Nec Corporation | Transmission of mbms in an ofdm communication system |
| CN101242402A (en) * | 2007-02-06 | 2008-08-13 | 上海贝尔阿尔卡特股份有限公司 | Method and device for constructing protocol data packet of wireless link control layer |
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| WO2008084634A1 (en) * | 2007-01-10 | 2008-07-17 | Nec Corporation | Transmission of mbms in an ofdm communication system |
| CN101242402A (en) * | 2007-02-06 | 2008-08-13 | 上海贝尔阿尔卡特股份有限公司 | Method and device for constructing protocol data packet of wireless link control layer |
| CN101159902A (en) * | 2007-10-26 | 2008-04-09 | 中兴通讯股份有限公司 | Time slot configuration method of carrier cell dedicated for multimedia broadcasting multicast system |
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| CN101938699A (en) | 2011-01-05 |
| WO2010145502A1 (en) | 2010-12-23 |
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