CN101098175A - Method for transmitting, receiving evolvement multimedia broadcast multicast business - Google Patents
Method for transmitting, receiving evolvement multimedia broadcast multicast business Download PDFInfo
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- CN101098175A CN101098175A CNA2006100894300A CN200610089430A CN101098175A CN 101098175 A CN101098175 A CN 101098175A CN A2006100894300 A CNA2006100894300 A CN A2006100894300A CN 200610089430 A CN200610089430 A CN 200610089430A CN 101098175 A CN101098175 A CN 101098175A
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Abstract
The invention discloses a sending-receiving method of advanced multimedia broadcast multicast service, wherein when in sending, decomposing the object multimedia broadcast multicast service into basic layer data and strengthen layer data, using different multi-in multi-out MIMO technique to send the basic and strengthen layer data respectively, and transmitting the indication information of the basic and strengthen layer data on a control channel, when in receiving, terminal obtains the indication information sent from base station, and only receiving and demodulating basic layer data or only receiving and demodulating basic layer data and strengthen layer data according to self ability. Via the invention, the terminals with different abilities under various single-frequency network topology structures can effectively receive advanced multimedia broadcast multicast service.
Description
Technical field
The present invention relates to communication technical field, be specifically related to a kind of sending, receiving method of evolutionary multimedia broadcast multicast business.
Background technology
Now, people no longer are satisfied with phone and messaging service to the demand of mobile communication, and along with the fast development of internet, a large amount of mobile multi-media services emerge.The some of them mobile multi-media service requires a plurality of users can receive identical data, for example video request program, television broadcasting, video conference, online education, interactive game etc. simultaneously.These mobile multi-media services are compared with general data service, have characteristics such as data volume is big, longer duration, delay sensitive.
In order to effectively utilize the mobile communications network resource, 3GPP (3G (Third Generation) Moblie global standards tissue) has proposed MBMS (multimedia broadcast multicast services) business of mobile communications network, thereby in mobile communications network, provide a data source to send the point-to-multipoint service of data to a plurality of users, the realization Internet resources are shared, improve utilization rate of network resource, the utilance of the interface resource of especially eating dishes without rice or wine.The MBMS that 3GPP proposes not only comprises the classes of messages multicast and the broadcasting of plain text low rate, but also comprises the multicast and the broadcasting of high-speed multimedia business.
3GPP is at LTE (Long Term Evolution, Long Term Evolution) in E-MBMS (evolutionary multimedia broadcast multicast services) business, utilize transmission that MIMO (Multiple Input, Multiple Output) transmission technology realizes broadcast data at present just under discussion.Potential feasible participation in the election scheme has the MIMO scheme that sends diversity, the MIMO scheme of spatial reuse and the MIMO scheme of mixing transmission diversity and spatial reuse.Wherein,
1. what the MIMO scheme of transmission diversity was primarily aimed at is to adopt 2 * 1 antenna configurations, and promptly the base station sends and uses two antennas, terminal to receive antenna of use.It is identical that transmitting terminal is sent to the data stream contents of two antennas, utilizes various space-time coding methods to adjust the order of transmission of data flow on each antenna; , must that is to say and finally with respect to terminal, only see a data flow owing to have only one to receive link at receiving terminal by certain signal processing with two data flow transparentizations that receive simultaneously.The scheme of existing transmission diversity mainly contains two kinds of SFBC (space frequency block coding) and CDD (circulation time-delay coding).
2. what the MIMO scheme of spatial reuse was primarily aimed at is to adopt 2 * 2 antenna configurations, i.e. base station transmission and terminal receive all uses two antennas.The data stream contents that transmitting terminal is sent to two antennas has nothing in common with each other; Terminal promptly has two to receive links owing to there are two antennas, by certain signal processing have the ability with two different data flow respectively demodulation get off.Present spatial multiplexing mode has the multiplex mode of single codeword and many code words on the content of every data flow; From the space arrangement order, mainly be divided into HBLAST when empty (horizontal slice structure), VBLAST when empty (vertical demixing structure) and DBLAST when empty (diagonal layering structure) again.
3. what the MIMO scheme of mixing transmission diversity and spatial reuse was primarily aimed at is to adopt 4 * 2 antenna configurations, and promptly the base station sends four antennas, and terminal receives two antennas.Transmitting terminal is divided into two groups with four antennas, every group of two antennas.Adopt the MIMO technology of spatial reuse between group, adopt the MIMO technology that sends diversity in the group; The processing method that terminal receives corresponds respectively to 1 and 2 processing method.
Evolution trend from 3GPP E-MBMS, SFN (single frequency network, the single-frequency network) will be a kind of network configuration that generally adopts, be that all base stations in the SFN network send identical MBMS business in the identical frequency resource of identical time utilization, even like this at cell edge, the user also can receive the useful signal from different base station.Terminal not only can be carried out energy to the used useful signal that receives and be merged, and can obtain to come from the diversity gain in different paths, thereby has improved the QoS (service quality) of the MBMS business of whole SFN regional extent.
Above-mentioned three kinds of MIMO schemes all have certain requirement to antenna configurations, and respectively just at the terminal of the network design and the different stage of some situation: scheme 1 is primarily aimed at is under the more sparse situation of SFN network, the useful signal energy that receives different paths a little less than, the object of terminal mainly is low side (reception antenna and receive link, disposal ability is weak); What scheme 2 and 3 was primarily aimed at is under the situation of SFN network than comparatively dense, the useful signal energy that receives different paths is stronger, the object of terminal mainly is high-end (two reception antennas and receive link, disposal ability is stronger), and the base station possesses two or four transmitting antennas and sends link.Therefore, the application of these three kinds of MIMO schemes all can be subjected to restriction to a certain degree.
Summary of the invention
Main purpose of the present invention provides a kind of sending method of evolutionary multimedia broadcast multicast business, to overcome the shortcoming that existing E-MBMS transmission technology is subjected to terminal capability and network deployment condition restriction, under various SFN network topology structures, guarantee the transmission of MBMS business.
Another object of the present invention provides a kind of method of reseptance of evolutionary multimedia broadcast multicast business, so that the terminal of different abilities can both receive the MBMS business effectively.
For this reason, the invention provides following technical scheme:
A kind of sending method of evolutionary multimedia broadcast multicast business, described method comprises step:
A, multimedia broadcast-multicast service is decomposed into basic layer level data and enhancement layer level data;
B, adopt different multiple-input, multiple-output MIMO technology to send respectively to described basic layer level data and enhancement layer level data;
C, on control channel the indication information of transmission basic layer level data and enhancement layer level data.
Described step B comprises:
Adopt the MIMO technology that sends diversity to send to basic layer level data;
Adopt the MIMO technology of spatial reuse to send to the enhancement layer level data.
Described step B further comprises:
Basic layer level data carried out different precodings respectively with the enhancement layer level data;
Send on each transmitting antenna that basic layer level data after the precoding and enhancement layer level data are mapped to the base station.
Described basic layer level data comprised with the step that the enhancement layer level data is carried out different precodings respectively:
Basic layer level data carried out space frequency block coding SFBC or circulation time-delay coding CDD;
Structure DBLAST coding during structure VBLAST coding or diagonal layering empty during structure HBLAST coding or vertical demixing empty when the enhancement layer level data is carried out horizontal slice empty.
Describedly basic layer level data after the precoding and enhancement layer level data be mapped to the step that sends on each transmitting antenna of base station comprise:
Basic layer level data behind the coding and enhancement layer level data are carried out and gone here and there conversion;
Coded data after the conversion is mapped on each transmitting antenna of base station in serial on the time domain and sends.
Describedly basic layer level data after the precoding and enhancement layer level data be mapped to the step that sends on each transmitting antenna of base station be specially:
Basic layer level data behind the coding and enhancement layer level data are sent parallel being mapped on each transmitting antenna of base station on the frequency domain.
The indication information of described basic layer level data and enhancement layer level data comprises: the position of the time that basic layer level data and enhancement layer level data take in transmission and the start time information of transmission, and/or mapping mode, and/or precoding mode, and/or the coding and the modulation system that adopt.
The indication information of basic layer level data and enhancement layer level data and the business navigation expense of multimedia broadcast-multicast service are transmitted on control channel together.
A kind of method of reseptance of evolutionary multimedia broadcast multicast business, described method comprises step:
Terminal is obtained the basic layer level data of base station transmission and the indication information of enhancement layer level data;
When terminal has only a reception antenna, receive only and the basic layer of demodulation level data according to described indication information;
When terminal has a plurality of reception antenna, receive simultaneously and demodulation basic layer level data and enhancement layer level data according to described indication information.
Terminal is obtained the indication information of described basic layer level data and enhancement layer level data by control channel.
Described method further comprises:
According to described indication information, make terminal carry out operating state and resting state conversion.
The step that described terminal is carried out operating state and resting state conversion comprises:
When basic layer level data transmitted, make terminal in running order;
When the enhancement layer level data is transmitted, make the radio frequency part of terminal and receive link portions to change resting state over to.
By above technical scheme provided by the invention as can be seen, the present invention decomposes a MBMS business to be broadcast by grade, it is decomposed into basic layer level data and enhancement layer level data, and the different MIMO technology of the MBMS The data of different brackets transmitted, for the terminal that makes different abilities can both receive the MBMS business datum effectively, on control channel, transmit the indication information of basic layer level data and enhancement layer level data simultaneously.Thereby in various SFN network topology structures, make the terminal of various abilities all can receive the MBMS business datum effectively, and make terminal when receiving the MBMS business, can adopt battery saving mode, saved the power consumption of terminal.The present invention has adopted various MIMO technology fully, improved the MBMS performance of services effectively, and when guaranteeing basic MBMS business, improved the coverage of MBMS business, make operator carry out the MBMS business of various QoS grades neatly simultaneously according to the variation in market.
Description of drawings
Fig. 1 is the realization flow figure of an embodiment of the sending method of evolutionary multimedia broadcast multicast business of the present invention;
Fig. 2 is the principle schematic that adopts the SFBC coded system to carry out precoding to basic layer level data among the present invention;
Fig. 3 is the principle schematic that the structured coding mode is carried out precoding when among the present invention the enhancement layer level data being adopted horizontal slice empty;
Fig. 4 is that the data of basic layer and enhancement layer are carried out the flow chart that serial is shone upon among the present invention;
Fig. 5 is the flow chart that the data of basic layer and enhancement layer walk abreast and shine upon among the present invention;
Fig. 6 is the realization flow figure of an embodiment of the method for reseptance of evolutionary multimedia broadcast multicast business of the present invention.
Embodiment
Core of the present invention is to dispose the MBMS business effectively at the terminal of various SFN network topology structures and various abilities, for this reason, the present invention decomposes a MBMS business to be broadcast by grade, it is decomposed into basic layer level data and enhancement layer level data, and the different MIMO technology of the MBMS The data of different brackets transmitted, for the terminal that makes different abilities can both receive the MBMS business datum effectively, on control channel, transmit the indication information of basic layer level data and enhancement layer level data simultaneously.
Based on this send mode, terminal is when receiving the MBMS business datum, at first to receive the basic layer level data transmitted on the control channel and the indication information of enhancement layer level data, then according to this indication information, if terminal has only a reception antenna, then receive only and the basic layer of demodulation level data; If terminal has two and above reception antenna, then can receive simultaneously and demodulation basic layer level data and enhancement layer level data, thereby the terminal that guarantees different abilities can both receive the MBMS business datum.
In order to make those skilled in the art person understand the present invention program better, the present invention is described in further detail below in conjunction with drawings and embodiments.
The realization flow of the sending method of reference evolutionary multimedia broadcast multicast business of the present invention shown in Figure 1 may further comprise the steps:
Step 101: multimedia broadcast-multicast service is decomposed into basic layer level data and enhancement layer level data.
Basic layer and enhancement layer belong to the category of application layer, and concrete decomposition can have multiple scheme.And the decomposition of this business datum can be that service application layer in network carries out, and that is to say, the data that are transferred to the base station are decomposed data.
Wherein, basic layer is meant the professional basic data division of a MBMS; Enhancement layer is meant the professional data division that strengthens of a MBMS.For example, concerning a mobile TV, basic layer is to guarantee the definition that image is basic or the MBMS data division of fluency, is receiving under the prerequisite of base layer data, and enhancement layer can further improve the definition or the fluency of image.
Receive only the MBMS data division of basic layer even the principle of decomposing is a terminal, just can obtain original MBMS business by the demodulation sign indicating number, only lower grade of Ye Wu QoS (service quality); And receive basic layer and increase the two-part data of layer, just can obtain higher level QoS business.
For example, require E-UTRA (access of evolved universal terrestrial wireless) MBMS will support the mobile TV program of 16 channels at least in TR 25.913 (technical report 25.913), each channel is approximately 300kbps; 300kbps is equivalent to per second will pass image about 30 frames; A kind of simple decomposing scheme is exactly the part that the mobile TV program of a 300kbps is decomposed into two 15 frame/seconds, can certainly be to decompose in the application layer part (program source code section) of mobile TV program.
Step 102: adopt different multiple-input, multiple-output MIMO technology to send respectively with the enhancement layer level data to basic layer level data.
In order to guarantee the transparency of base station transmitting antenna to the transmission data, just do not need to distinguish which kind of MIMO technology of employing sends at the transmitting antenna place, the present invention carries out precoding respectively to the MBMS data of basic layer and two grades of enhancement layer: to the MIMO scheme of the The data transmission diversity of basic layer grade, to the MIMO scheme of the The data spatial reuse of enhancement layer grade.Its detailed process will be described in detail later.
Step 103: the indication information of transmission basic layer level data and enhancement layer level data on control channel.
The present technique field personnel know, when system transmissions MBMS is professional, normally transmit the different MBMS business of multichannel, employed coding and modulation system etc. when terminal need be known the professional transmission of the zero-time, the transmission cycle (transmission intercal) of MBMS business, the professional employed pilot frequency sequence of MBMS number of position, the professional transmission of MBMS of the professional shared transmission resource block of various MBMS business program lists, MBMS and MBMS in advance, the professional navigation of these information common names expenses.Professional navigation expense is semi-static, that is to say that in a certain period be indeclinable, and therefore the cycle of transmission can be longer with respect to the transmission cycle of MBMS business.In evolution MBMS system, these information are transmitted in the MBMS control channel.
Because the MBMS data of basic layer and enhancement layer adopt the serial multiple connection in time domain or adopt parallel multiple connection mode to be mapped in the transmission resource block in frequency domain, therefore, data shared informational needs such as resource block location in transmission course for these two grades are notified receiving terminal, so that terminal can accurately receive corresponding data according to self-ability.In the present invention, these information can be transmitted in MCCH (MBMS control channel) with the business navigation expense of evolution MBMS.Institute's information transmitted comprises: the position of the transmission resource block that basic layer and enhancement layer are shared and zero-time and/or the mapping mode and/or the precoding mode of transmission, and/or every layer of coding that is adopted and modulation system etc.
These information are transmitted on MCCH, can be made terminal know the positional information of two level data in advance.
Certainly, also can adopt other modes to notify terminal these information.For example, the basic layer service of these information companies is transferred to terminal together.
To the transmission course of different brackets MBMS data among the present invention be further described below.
At first, need carry out different precodings to the MBMS data of different brackets.
For basic layer level data, can adopt SFBC or CDD coded system or other to send the coded system of diversity.As shown in Figure 2, when adopting the SFBC coded system, in the base station that two transmitting antennas are arranged, antenna 1 sends the data flow [S2 S1] of MBMS and at the cell common pilots of antenna 1, antenna 2 sends SFBC coded datas stream [S1
*S2
*] conjugation of the MBMS data flow (coding) and at the cell common pilots of antenna 2.If the base station has only a transmitting antenna, can choose a MBMS data flow wantonly and send.By the sort signal processing mode, no matter receiving terminal possesses the still many covers of a cover reception antenna receives antenna, can receive from a plurality of base stations in the SFN network and also carry out the MBMS data flow that merges in the space, and terminal does not need to know that there are several transmitting antennas the base station.
For the enhancement layer level data, the coded system of structure or the coded system of other spatial reuse during structure, diagonal layering empty during structure, vertical demixing empty in the time of can adopting horizontal slice empty.As shown in Figure 3, employing is during with horizontal slice empty during structure HBLAST coded system, the MBMS data flow D of enhancement layer is through serial to parallel conversion, form two independent data stream, then respectively through modulating-coding with interweave (can adopt different codings and modulation) and be sent to separately transmitting antenna with the pilot signal of antenna separately.The data flow demodulation of enhancement layer can be got off and possessed the above terminal that receives link of two covers.
Then, send on each transmitting antenna that the basic layer level data after the precoding and enhancement layer level data are mapped to the base station.
Can adopt the mapping mode of serial, the mapping mode of this serial carries out on time domain, that is to say, makes basic layer monopolize whole transmission resource block respectively with the data of enhancement layer on different timeslices.This serial mapping mode can be expressed as shown in Figure 4:
Step 401: the enhancement layer level data is carried out the HBLAST coding, basic layer level data carried out the SFBC coding;
Step 402: enhancement layer level data behind the coding and basic layer level data are carried out parallel serial conversion;
Step 403: the data flow of serial after the conversion is mapped in the transmission resource block on the different time domain;
Step 404: the transmission resource block after will shining upon is modulated on the different antennas and sends.
Adopt this serial mapping mode, can make terminal adopt battery saving mode to receive the MBMS business, save the terminal power consumption.
In addition, can also adopt parallel mapping mode, this parallel mapping mode carries out on frequency domain, that is to say, make the data of basic layer and enhancement layer take the part of whole transmission resource block respectively, each transmitting antenna that is sent to the base station then at one time gets on.This parallel mapping mode can be expressed as shown in Figure 5:
Step 501: the enhancement layer level data is carried out the HBLAST coding, basic layer level data carried out the SFBC coding;
Step 502: the enhancement layer level data after will encoding is mapped in the transmission resource block of different frequency domains with basic layer level data;
Step 503: the transmission resource block after will shining upon is modulated on the different antennas and sends.
As seen, the present invention sends the different MIMO technology that adopts to the data of basic layer and enhancement layer: basic layer adopts the diversity/MIMO mode that sends, enhancement layer adopts the spatial multiplexing MIMO mode, so the terminal SNR (acknowledge(ment) signal noise ratio) that receives base layer data will be higher than the SNR of enhancement data.That is to say that base layer data has wider overlay area than enhancement data.Further, the present invention can reasonably adjust the transmitted power of each several part transfer resource on the one hand, thereby improve the coverage of MBMS business by adopting this parallel mapping mode; On the other hand when the reception bandwidth of terminal during, can make terminal still have the ability to receive the neatly MBMS business of basic layer less than the transmission bandwidth of system.
Such as, the transmitted power of increasing base layer data, the overlay area that can further improve base layer data, the overlay area of enhancement data can descend simultaneously certainly; Or the transmitted power of increasing enhancement data, the overlay area that can improve enhancement data, even by reasonably distributing the power resource of two parts data, can be so that two parts data have identical overlay area.
For another example, if adopt parallel mapping mode, the bandwidth of MBMS transmission business is 5Mhz.Wherein, 2.5Mhz is used for basic layer, and 2.5Mhz is used for enhancement layer; When the reception bandwidth of terminal is 2.5Mhz, still has the ability the Data Receiving and the demodulation of basic layer segment are got off, thereby also can guarantee basic MBMS business realizing the terminal of little reception bandwidth.
The present invention is not limited to above-mentioned these two kinds of mapping modes, also can adopt other modes to incite somebody to action the data map of basic layer and enhancement layer to the transfer resource unit of different dimensions according to application need.
In the present invention,, not only can adopt identical modulation and code rate scheme, can also adopt different sizes and different modulation and code rate schemes for the transmission of basic layer and two level data pieces of enhancement layer.So not only can there be leeway further to improve the professional transmission frequency spectra efficient of evolution MBMS, and operator also can be according to the demand and the popular variation of terminal in market, suitably adjust the size and the MCS (Modulation and Coding Scheme) of two level data pieces, thereby realize disposing neatly the MBMS business of various QoS grades.Such as, the size that strengthens the base layer data piece can improve the QoS that low end subscriber is accepted the MBMS business; Strengthen the size of enhancement data, because the spectrum efficiency of the MIMO technology of the spatial reuse that enhancement data adopts is better than the transmission diversity/MIMO technology that base layer data adopts, therefore can improve the professional transmission frequency spectra efficient of whole MBMS, that is to say and on the unit resource piece, can transmit more MBMS data, can improve high-end user like this and receive the MBMS performance of services.By adjusting MCS, can change the professional transmission frequency spectra efficient of MBMS, the coverage of MBMS business and the QoS of MBMS business.Such as, modulation system is brought up to 16QAM (modulation of 16 state orthogonal amplitude keyings) by original 4PSK (modulation of 4 phase keyings), and/or code rate brought up to 2/3 by original 1/2, the professional transmission frequency spectra efficient of MBMS can improve, empty accounting can improve, but the coverage of MBMS business can descend simultaneously, and the QoS of MBMS business can descend; Can obtain opposite conclusion if instead reduce MCS.Adjusting MCS can be simultaneously at two-layer data, also can be only at the data of one deck.
The realization flow of the method for reseptance of reference evolutionary multimedia broadcast multicast business of the present invention shown in Figure 6 may further comprise the steps:
Step 601: terminal is obtained the indication information of basic layer level data and enhancement layer level data.
Mention in the description to the sending method of evolutionary multimedia broadcast multicast business of the present invention in front, for the terminal that makes different abilities receives corresponding M BMS business datum, need the indication information of basic layer level data and enhancement layer level data is transmitted on control channel, perhaps follow basic layer service data to transmit together.Therefore, when terminal receives the MBMS data, at first need to obtain the indication information of basic layer level data and enhancement layer level data from control channel or other Traffic Channels.These information comprise: the position of the transmission resource block that basic layer and enhancement layer are shared and zero-time and/or the mapping mode and/or the precoding mode of transmission, and/or every layer of coding that is adopted and modulation system etc.
Step 602: when terminal has only a reception antenna, receive only and the basic layer of demodulation level data according to described indication information.
Step 603: when terminal has a plurality of reception antenna, receive simultaneously and demodulation basic layer level data and enhancement layer level data according to described indication information.
According to above-mentioned indication information, can also make terminal carry out operating state and resting state conversion, thereby save the power consumption of various terminals.
Such as, for end terminal, by described indication information, when basic layer level data transmitted, make terminal in running order, and when the enhancement layer level data is transmitted, make the radio frequency part of terminal and accept link portions to change resting state over to, save power consumption thereby obtain bigger empty accounting; For high-end terminal, can utilize described indication information equally, under the lower situation of terminal electric energy or for belt-tightening purpose, select to switch to data flow that receives only basic layer grade or the business of only subscribing to basic layer grade, thereby also can reach purpose of power saving.
Though described the present invention by embodiment, those of ordinary skills know, the present invention has many distortion and variation and do not break away from spirit of the present invention, wish that appended claim comprises these distortion and variation and do not break away from spirit of the present invention.
Claims (12)
1, a kind of sending method of evolutionary multimedia broadcast multicast business is characterized in that, described method comprises step:
A, the multimedia broadcast-multicast service that will need to transmit are decomposed into basic layer level data and enhancement layer level data;
B, adopt different multiple-input, multiple-output MIMO technology to send respectively to described basic layer level data and enhancement layer level data;
C, on control channel the indication information of transmission basic layer level data and enhancement layer level data.
2, method according to claim 1 is characterized in that, described step B comprises:
Adopt the MIMO technology that sends diversity to send to basic layer level data;
Adopt the MIMO technology of spatial reuse to send to the enhancement layer level data.
3, method according to claim 1 and 2 is characterized in that, described step B further comprises:
Basic layer level data carried out different precodings respectively with the enhancement layer level data;
Send on each transmitting antenna that basic layer level data after the precoding and enhancement layer level data are mapped to the base station.
4, method according to claim 3 is characterized in that, described basic layer level data is comprised with the step that the enhancement layer level data is carried out different precodings respectively:
Basic layer level data carried out space frequency block coding SFBC or circulation time-delay coding CDD;
Structure DBLAST coding during structure VBLAST coding or diagonal layering empty during structure HBLAST coding or vertical demixing empty when the enhancement layer level data is carried out horizontal slice empty.
5, method according to claim 3 is characterized in that, describedly basic layer level data after the precoding and enhancement layer level data are mapped to the step that sends on each transmitting antenna of base station comprise:
Basic layer level data behind the coding and enhancement layer level data are carried out and gone here and there conversion;
Coded data after the conversion is mapped on each transmitting antenna of base station in serial on the time domain and sends.
6, method according to claim 3 is characterized in that, describedly basic layer level data after the precoding and enhancement layer level data are mapped to the step that sends on each transmitting antenna of base station are specially:
Basic layer level data behind the coding and enhancement layer level data are sent parallel being mapped on each transmitting antenna of base station on the frequency domain.
7, according to claim 1 or 2 or 3 described methods, it is characterized in that, the indication information of described basic layer level data and enhancement layer level data comprises: the position of the time that basic layer level data and enhancement layer level data take in transmission and the start time information of transmission, and/or mapping mode, and/or precoding mode, and/or the coding and the modulation system that adopt.
8, method according to claim 7 is characterized in that,
The indication information of basic layer level data and enhancement layer level data and the business navigation expense of multimedia broadcast-multicast service are transmitted on control channel together.
9, a kind of method of reseptance of evolutionary multimedia broadcast multicast business is characterized in that, described method comprises step:
Terminal is obtained the basic layer level data of base station transmission and the indication information of enhancement layer level data;
When terminal has only a reception antenna, receive only and the basic layer of demodulation level data according to described indication information;
When terminal has a plurality of reception antenna, receive simultaneously and demodulation basic layer level data and enhancement layer level data according to described indication information.
10, method according to claim 9 is characterized in that,
Terminal is obtained the indication information of described basic layer level data and enhancement layer level data by control channel.
11, according to claim 9 or 10 described methods, it is characterized in that described method further comprises:
According to described indication information, make terminal carry out operating state and resting state conversion.
12, method according to claim 11 is characterized in that, the step that described terminal is carried out operating state and resting state conversion comprises:
When basic layer level data transmitted, make terminal in running order;
When the enhancement layer level data is transmitted, make the radio frequency part of terminal and receive link portions to change resting state over to.
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| CN102106164A (en) * | 2008-03-21 | 2011-06-22 | 北方电讯网络有限公司 | Multimedia broadcast multicast service (MBMS) utilizing spatial multiplexing |
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