CN101340621A - Transmitting and receiving method and apparatus for multicast/broadcast service - Google Patents
Transmitting and receiving method and apparatus for multicast/broadcast service Download PDFInfo
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- CN101340621A CN101340621A CNA2007101229770A CN200710122977A CN101340621A CN 101340621 A CN101340621 A CN 101340621A CN A2007101229770 A CNA2007101229770 A CN A2007101229770A CN 200710122977 A CN200710122977 A CN 200710122977A CN 101340621 A CN101340621 A CN 101340621A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
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Abstract
The invention discloses a data sending and receiving method of unicasting service and multicasting/broadcasting service, which is used for correctly receiving the unicasting service or multicasting/broadcasting service. In the technical proposal provided by the invention, a sending end carries out coding on the data of unicasting service and the data of multicasting/broadcasting service respectively; the coded data of the unicasting service and the multicasting/broadcasting service are interlaced respectively, wherein, the interlacement pattern of the unicasting service is different from the interlacement pattern of the multicasting/broadcasting service; the data of the unicasting service and the multicasting/broadcasting service after interlacement are modulated respectively and then mapped to the same time-frequency resource for sending; at a receiving end, corresponding interlacement patterns are utilized for carrying out interlacement, so as to improve the accuracy of receiving. In the technical proposal provided by the invention, the same processing can be conducted to multiple data of multicasting/broadcasting service. A corresponding sending device and a receiving device are also disclosed by the invention.
Description
Technical field
The present invention relates to the communications field, particularly relate to the transmission and the reception technique of multicast/broadcast business and unicast service, and the transmission and the reception technique of multinomial multicast/broadcast business.
Background technology
Along with the variation of development of Communication Technique and user's request, multimedia multicast/broadcast business is more and more paid close attention to.The content of a multicast/broadcast business sends to a plurality of subscriber equipmenies simultaneously via the same physical transfer resource, thereby can improve the benefit of unit wireless transmission resources.In order to strengthen the receptivity of Cell Edge User equipment effectively, can make the identical signal of a plurality of base stations synchronized transmission on same transmission resource, this mode is specially adapted to need to cover the multicast/broadcast business of a plurality of sub-districts, and be called as single frequency network (Single Frequency Network, SFN) pattern.
At present prior art is respectively unicast service usually and distributes different frequency domain or time-domain resource with multicast/broadcast business, but adopts the physical transfer resource institute data carried by data amount of this mode can not satisfy user's demand.Perhaps, in order to utilize identical radio resource transfer more contents as far as possible, multicast/broadcast business and unicast service are superimposed upon on the identical physical resource transmit.Referring to shown in Figure 1, at transmitting terminal, to multicast/broadcast data and unicast data modulate respectively, go here and there and sequence of operations such as conversion after, amplify or dwindle the back (multicast/broadcast data is gb via configurable gain separately, unicast data is gu) (the multiplication sign representative is amplified or is dwindled, plus sige representative stack, gain), be mapped on the identical sub-carrier resources and send.At receiving terminal, for example need to receive the unicast service data, then using the unicast service data of same wireless transfer resource as interference with multicast/broadcast business, correctly solve the multicast/broadcast business data, then to multicast/broadcast business data recompile, when receiving unicast service, it is eliminated as interference, can solve the unicast service data.
Prior art must solve the multicast/broadcast data that transmits with the single frequency network pattern earlier, will just can solve unicast data after its interference eliminated as unicast data then.Because the uni-cast data signal of stack also is to disturb to multicast/broadcast data itself, will inevitably reduce the receptivity of multicast/broadcast data.When this interference reaches certain level, multicast/broadcast data possibly can't be correctly decoded independently, also just can't eliminate it fully as disturbing from unicast signal this time, further influence the reception of unicast data, cause multiplexing unicast data and multicast/broadcast data together all can't correctly receive.Change an angle, for the bonding multicast data can correctly receive, also just necessary first bonding multicast data is less to the interference of multicast/broadcast data, promptly limited the transmitted power of unicast data, therefore can only multiplexing less unicast data, make the room for promotion of spectrum efficiency of whole system quite limited.
Summary of the invention
The embodiment of the invention provides the processing method and the device of a kind of unicast service and multicast/broadcast business, is used to improve the accuracy that receives unicast service and/or multicast/broadcast business.
The data transmission method for uplink of a kind of unicast service and multicast/broadcast business may further comprise the steps:
Unicast service data and multicast/broadcast business data that needs send are encoded respectively;
Unicast service data and multicast/broadcast business data behind the coding are interweaved respectively, and wherein the pattern that interweaves of unicast service and multicast/broadcast business is inequality;
Unicast service data after interweaving and multicast/broadcast business data are modulated to unicast service signal and multicast/broadcast business signal respectively, and are mapped on the identical running time-frequency resource and send.
A kind of sending method of multinomial multicast/broadcast business data may further comprise the steps:
At least two multicast/broadcast business data that needs send are encoded respectively;
Coded data at least two multicast/broadcast business interweaves respectively, and wherein the pattern that interweaves of each multicast/broadcast business is inequality;
At least two multicast/broadcast business data after interweaving are modulated to each multicast/broadcast business signal respectively, and are mapped on the identical running time-frequency resource and send.
The method of reseptance of a kind of unicast service data and multicast/broadcast business data may further comprise the steps:
The superposed signal that receives unicast service data and multicast/broadcast business data is carried out demodulation, obtain corresponding data;
According to corresponding data being deinterleaved with the corresponding pattern that interweaves;
The data that deinterleave are decoded, obtain unicast service data or multicast/broadcast business data.
A kind of dispensing device comprises:
Coding unit is used for unicast service data and multicast/broadcast business data that needs send are encoded respectively;
Interleave unit is used for the coded data of unicast service and multicast/broadcast business is interweaved respectively, and wherein the pattern that interweaves of unicast service and multicast/broadcast business is inequality;
Modulating unit is used for unicast service data after interweaving and multicast/broadcast business data are modulated to unicast service signal and multicast/broadcast business signal respectively;
Superpositing unit is used for unicast service signal and multicast/broadcast business signal map to identical running time-frequency resource;
Transmitting element is used for the unicast service signal is sent on identical running time-frequency resource with the multicast/broadcast business signal.
A kind of base station equipment comprises above-mentioned dispensing device.
A kind of dispensing device comprises:
Coding unit is used at least two multicast/broadcast business data that needs send are encoded respectively;
Interleave unit is used for the coded data of at least two multicast/broadcast business is interweaved respectively, and wherein the pattern that interweaves of each multicast/broadcast business is inequality;
Modulating unit is used at least two multicast/broadcast business data after interweaving are modulated to each multicast/broadcast business signal respectively;
Superpositing unit is used at least two multicast/broadcast business signal map to identical running time-frequency resource;
Transmitting element is used at least two multicast/broadcast business signals are sent on identical running time-frequency resource.
A kind of base station equipment comprises above-mentioned dispensing device.
A kind of receiving system comprises:
Demodulating unit is used for the superposed signal that receives unicast service and multicast/broadcast business is carried out demodulation, and obtains corresponding data;
The unit that deinterleaves is used for according to the corresponding pattern that interweaves corresponding data being deinterleaved;
Decoding unit is used for the data that deinterleave are decoded, and obtains unicast service data or multicast/broadcast business data.
A kind of receiving system comprises:
Demodulating unit is used for the superposed signal that receives multinomial multicast/broadcast business is carried out demodulation, and obtains corresponding data;
The unit that deinterleaves is used for according to the corresponding pattern that interweaves corresponding data being deinterleaved;
Decoding unit is used for the data that deinterleave are decoded, and obtains every multicast/broadcast business data in the multinomial multicast/broadcast business data.
The embodiment of the invention is by interlacing multi-address (Interleave Division Multiple Access, IDMA) mode interweaves to multicast/broadcast business data and unicast service data according to the different patterns that interweaves, realized distinguishing preferably between multicast/broadcast business data and the unicast service data, made receiver equipment obtain the data that need more accurately.Perhaps, at least two multicast/broadcast business data are interweaved, make receiver equipment distinguish every multicast/broadcast business data preferably according to the different patterns that interweaves.The embodiment of the invention is in the method for improving transmit leg device processes multicast/broadcast business data and unicast service data, also improved the method for receiver equipment processing multicast/broadcast business data and unicast service data, simplified the handling process of receiver equipment, avoided the repeatedly repetitive operation of iteration, perhaps select analytic method flexibly according to the actual transmissions situation, be convenient to parse the data that need more accurately, thereby improved the accuracy that receives multicast/broadcast business data and unicast service data.
Description of drawings
Fig. 1 is the schematic flow sheet of prior art;
Fig. 2 is the main method flow chart that transmitting terminal is handled multicast/broadcast business and unicast service in the embodiment of the invention;
Fig. 3 is the method schematic diagram of transmitting terminal disposed of in its entirety multicast/broadcast business and unicast service in the embodiment of the invention;
Fig. 4 is a concrete grammar flow chart of handling unicast service data and multicast/broadcast business data in the embodiment of the invention;
Fig. 5 A is a concrete grammar flow chart of handling unicast service pilot tone and multicast/broadcast business pilot tone in the embodiment of the invention;
Fig. 5 B is a method flow diagram of handling multinomial multicast/broadcast business in the embodiment of the invention;
Fig. 6 is the main method flow chart that receiving terminal is handled multicast/broadcast business and unicast service in the embodiment of the invention;
Fig. 7 is the concrete grammar flow chart that a kind of receiving terminal is handled multicast/broadcast business and unicast service in the embodiment of the invention;
Fig. 8 is the concrete grammar flow chart that another kind of receiving terminal is handled multicast/broadcast business and unicast service in the embodiment of the invention;
Fig. 9 is the structure drawing of device of transmitting terminal in the embodiment of the invention;
Figure 10 is the structure drawing of device of receiving terminal in the embodiment of the invention.
Embodiment
We's inventive embodiments realizes that by unicast service data and multicast/broadcast business data are carried out the operation of interlace-multiplex receiver equipment correctly parses unicast service data and multicast/broadcast business data.Multicast/broadcast business in the present embodiment is the multicast/broadcast business on the identical running time-frequency resource, the multicast/broadcast business data are the multicast/broadcast business data on the identical running time-frequency resource, and the multicast/broadcast business pilot tone is the multicast/broadcast business pilot tone on the identical running time-frequency resource.
Referring to Fig. 2, the main method flow process of handling unicast service data and multicast/broadcast business data in the present embodiment is as follows:
Step 201: the unicast service data and the multicast/broadcast business data that need to obtain transmission.
Step 202: unicast service data and multicast/broadcast business data are encoded respectively.
Step 203: unicast service data and multicast/broadcast business data are interweaved respectively according to the different patterns that interweaves.
Step 204: unicast service data and multicast/broadcast business data are modulated respectively, and be mapped to identical running time-frequency resource.
Step 205: unicast traffic data and multicast/broadcast business data on identical running time-frequency resource.
The concrete grammar of the superposed signal of unicast traffic and multicast/broadcast business is referring to shown in Figure 3 in the present embodiment, is that every business datum is encoded respectively, interweaved, modulates, goes here and there and change and be mapped on one group of subcarrier, amplify and (use symbol according to each self-corresponding gain factor (as gb, gu) according to each self-corresponding pattern that interweaves for the processing procedure of every business datum
Expression), the pairing signal stack of every business datum (is used symbol
Represent), and the signal after will superposeing carries out IFFT and transmission.Processing procedure for every service pilot is that every service pilot is carried out the subcarrier mapping respectively, and amplifies according to each self-corresponding gain factor (as gpb, gpu), and carries out IFFT and transmission.After the data and the above-mentioned processing of pilot tone process to unicast service and multicast/broadcast business, receiver equipment can parse the business datum that needs more accurately.Processing procedure and said process about multinomial multicast/broadcast business or multinomial unicast service are similar, can consult and carry out.Be that example describes with unicast service and multicast/broadcast business below, the processing procedure to every business datum and pilot tone is described in detail respectively.
Referring to Fig. 4, the concrete grammar flow process of handling unicast service data and multicast/broadcast business data in the present embodiment is as follows:
Step 401: unicast service data and multicast/broadcast business data are carried out encoding operation respectively, and both coded systems can be different, for simple to operate, adopt identical coded system to encode in the present embodiment.Coded system has multiple, as convolution code, Turbo code, loe-density parity-check code (low desity paritycodes, LDPC) etc.
Step 402: for unicast service generates the different patterns that interweaves with multicast/broadcast business.The method that the pattern that wherein interweaves produces has multiple, as random interleaving, block interleaving, convolutional interleave with block that bit reversal interweaves etc.Adopt the mode of random interleaving in the present embodiment, generate the pattern that interweaves by pseudo random sequence.The pattern production method separately that interweaves at unicast service and multicast/broadcast business also can be different, but simple in order to realize, adopt identical method to generate the different patterns that interweaves to unicast service and multicast/broadcast business in the present embodiment.
This pattern that interweaves also can be predefined, is the multiple pattern that interweaves of each cell configuration, does not then need interim generation, and this step can be omitted.
Step 403:, unicast service data and multicast/broadcast business data are interweaved respectively according to the pattern that interweaves accordingly.
Step 404: unicast service data and multicast/broadcast business data are carried out modulation operations respectively, obtain corresponding unicast service signal and multicast/broadcast business signal.Modulation operations has multiple, as 16 quadrature amplitude modulations (Quadrature Amplitude Modulation, QAM), quarternary phase-shift keying (QPSK) (Quadrature PhaseShift Keying, QPSK) etc.
Step 405: the operation that unicast service signal and multicast/broadcast business signal are gone here and there respectively and changed.
Step 406:, unicast service signal (corresponding gain factor gu) and multicast/broadcast business signal (corresponding gain factor gb) are carried out processing and amplifying respectively according to corresponding gain factor.
Step 407: the operation that on one group of subcarrier unicast service signal and multicast/broadcast business signal is superposeed obtains OFDM (Orthogonal Frequency Division Multiplexing, the OFDM) frequency domain data of symbol.
Step 408: OFDM symbol frequency domain data is carried out inverse Fourier transform (IFFT), obtain the time domain OFDM symbol.
Step 409: (Cyclic Prefix CP), sends the OFDM symbol then to insert Cyclic Prefix on the time domain OFDM symbol that obtains.Insert Cyclic Prefix can eliminate the intersymbol interference introduced by the multidiameter delay expansion of wireless channel (Inter-Symbol Interference, ISI) and inter-carrier interference (Inter-CarrierInterference).
In step 402, the different unicast services in sub-district are used the different patterns that interweaves.Identical unicast service in the neighbor cell is used the different patterns that interweaves.Different unicast services in the non-adjacent sub-district can be used the identical pattern that interweaves.In order to simplify the operation of network side, and provide the signal receiving quality of receiver equipment, a multicast/broadcast business in the present embodiment in a plurality of cell range is used the identical pattern that interweaves.Different multicast/broadcast business is used the different patterns that interweaves.
Before step 408, can also carry out other processing, for example, carry out the scrambling operation by cell scrambling or user's scrambler, to reach the effect of interference randomization.Perhaps when the base station is furnished with many transmit antennas, produce many group signals by Space Time Coding, on different antennae, transmit respectively, wherein Space Time Coding comprises Space-Time Block Coding (Space-time block coding, STBC) or space-time/frequency block code (Space-frequency blockcoding, SFBC), perhaps introduce different phase deviation (Phase shift diversity, PSD at different transmitting antennas; Perhaps Cyclic delay diversity, CDD) etc.Reach the effect of space diversity, spatial reuse or wave beam forming.
The transmission of miscellaneous service data is attended by the transmission of associated pilot signals usually, introduces the processing method of the pilot signal of the pilot signal of unicast service and multicast/broadcast business below, and shown in Fig. 5 A, idiographic flow is as follows:
Step 501: the pilot tone of the unicast service that acquisition need send and the pilot tone of multicast/broadcast business.
Step 502: the pilot tone of unicast service and the pilot tone of multicast/broadcast business are carried out the operation that subcarrier shines upon respectively.For the pilot tone that guarantees two kinds of business keeps orthogonality, the pilot tone of unicast service and the pilot tone of multicast/broadcast business are mapped on the mutually orthogonal resource.So-called orthogonal resource comprises a yard branch, frequency division and time-division resource etc.In the present embodiment, the pilot signal of unicast service and multicast/broadcast business is mapped to different subcarriers with their data-signal, promptly uses the frequency division resource.
Step 503:, the pilot tone (corresponding gain factor gpu) of unicast service and the pilot tone (corresponding gain factor gpb) of multicast/broadcast business are carried out processing and amplifying respectively according to corresponding gain factor.
Step 504: unicast service pilot tone and multicast/broadcast business pilot tone are carried out IFFT, obtain the time domain OFDM symbol.This step is finished with step 408.
Step 505: on the time domain OFDM symbol that obtains, insert CP, send the OFDM symbol then.This step is step 409.
In step 502, different unicast services can shared identical pilot tone in the sub-district.Different unicast services then uses different pilot resources in the neighbor cell.Different unicast services in the non-adjacent sub-district can shared identical pilot resources.In order to simplify the operation of network side, and provide the signal receiving quality of receiver equipment, the pilot tone of a multicast/broadcast business in the present embodiment in a plurality of cell range can be mapped to identical subcarrier.Different multicast/broadcast business can shared identical pilot tone.
May also have other data to be mapped in separately on other subcarrier, these data also may be unicast service data or multicast/broadcast business data, perhaps control signaling, or any other supplementary etc.Obtain the OFDM symbol of time domain on all subcarriers after the mapped data process IFFT conversion.Insert Cyclic Prefix then, be modulated on system's frequency and send.
Transmit leg equipment is used different interweave pattern unicast traffic data and multicast/broadcast business data, receiver equipment need deinterleave to unicast service data and multicast/broadcast business data with the described different pattern that interweaves of correspondence equally, then needs to make transmit leg equipment and receiver equipment to use the same pattern that interweaves that same item number certificate is operated.Transmit leg equipment is also by the pairing resource of control command notice its signal that need receive of receiver equipment (comprising frequency domain, time domain and sign indicating number territory etc.).
In the present embodiment, the pairing pattern that interweaves of the signal that network side need notify receiver equipment to receive can be notified simultaneously and may produce the pairing pattern that interweaves of interference signals (being the signal on the identical running time-frequency resource) to the signal that needs receive.Have multiple the opportunity of notice: as notice before the signal of unicast traffic and multicast/broadcast business when notice or receiver equipment registration are professional when entering the sub-district as receiver equipment (concrete notify etc.), perhaps notify simultaneously at the signal of unicast traffic and multicast/broadcast business.
The applied pattern that interweaves of signal by its reception of control command notice receiver equipment.Concrete advice method has multiple, as: before, notify receiver equipment all patterns that interweaves in the mode of configuration or broadcasting earlier, indicate the pattern that interweaves of this application then by control command.It is multiple to notify the mode of all patterns that interweaves to have, and the institute that generates the method for the pattern that interweaves and parameter as notice might value, or directly notifies all intersection chart sample bodies etc.Accordingly, it is multiple to indicate the mode of the pattern that interweaves of this application to have, as the sign etc. of carrying the parameter that generates the pattern that interweaves or carrying the pattern that interweaves.Wherein, the relation of described control command and unicast service pilot tone, multicast/broadcast business pilot tone can have multiple, as sign indicating number branch, time-division, frequency division or their mixing relation.
For example, all patterns that interweaves, as shown in the table:
Table 1
Indicate the pattern that interweaves of this application, control command shape is as (random interleaving, 1), or (000), or (＜2,3,1,4 〉) etc.
Also can dispose all patterns that interweaves simultaneously at transmit leg equipment and receiver equipment, then each transmitting control commands that only needs is indicated the sign or the intersection chart sample body of the pattern that interweaves.
The different interleaving pattern of the every unicast service of configuration and every multicast/broadcast business in neighbor cell, example is as shown in table 2:
Table 2
Wherein, sub-district 1 is non-adjacent sub-district with sub-district 4, and sub-district 2 is non-adjacent sub-district with sub-district 5.
The corresponding relation example of table 3, interweave pattern and business
| The sign of pattern interweaves | Professional |
| 010 | Unicast service 1 |
| 011 | Unicast service 2 |
| 001 | Multicast/broadcast business 1 |
| 110 | Multicast/broadcast business 2 |
| …… | …… |
By table 3 as can be known, the business that receiver equipment receives as required can be known the correspondence pattern that interweaves, and does not need transmit leg equipment transmitting control commands to notify.
Referring to Fig. 5 B, the data transmission method for uplink flow process of multinomial multicast/broadcast business is as follows in the present embodiment:
Step 511: at least two multicast/broadcast business data that needs send are encoded respectively.
Step 512:, the coded data of at least two multicast/broadcast business is interweaved respectively according to the different patterns that interweaves.
Step 513: at least two multicast/broadcast business data after interweaving are modulated to each multicast/broadcast business signal respectively, and are mapped on the identical running time-frequency resource and send.
Processing method when more than having described the data of unicast traffic and multicast/broadcast business in the embodiment of the invention and pilot signal.Accordingly, below main processing method when describing the data that receive unicast service and multicast/broadcast business in the embodiment of the invention and pilot signal, referring to shown in Figure 6, main flow process is as follows:
Step 601: the superposed signal to unicast service and multicast/broadcast business is carried out demodulation operation, obtains corresponding data.
Step 602: according to corresponding with the described signal pattern that interweaves to the operation that deinterleaves of corresponding data.
Step 603: the operation to described data are decoded obtains the unicast service data or the multicast/broadcast business data that need.
Referring to Fig. 7, the concrete process flow following (is example with the multicast/broadcast data) when receiving the data of unicast service and/or multicast/broadcast business in the present embodiment:
Step 701: the signal (comprising data-signal and pilot signal) that on the resource of knowing, receives the carrying multicast/broadcast business.
Step 702: carry out Fourier transform (FFT) to received signal, obtain OFDM symbol frequency domain data.Because data-signal is different with the subcarrier that pilot signal is used, then this step can be distinguished data-signal and pilot signal.
Step 703: OFDM symbol frequency domain data is carried out and goes here and there conversion.
Step 704: the signal after the conversion is carried out corresponding demodulation operation, and calculate the soft information of multicast/broadcast business data, wherein, the method for calculating soft information has multiple, obtains soft information as the log-likelihood ratio of calculated data.
Step 705: the pattern that interweaves according to the multicast/broadcast business of knowing deinterleaves to the soft information of multicast/broadcast business data.The mode of knowing the pattern that interweaves has multiple, as directly knowing by the dispatch that receives before, or generates the pattern etc. that interweaves accordingly by the parameter that receives.
Step 706: the multicast/broadcast business data are carried out corresponding decode operation, obtain the multicast/broadcast business data that finally need.
The quality of signals that the foregoing description is applied in the business that need to receive preferably under the situation effect better, and once deinterleave, can obtain behind the decode operation data of the business that needs.
When strong, adopting the another kind of method of handling the data of unicast service and multicast/broadcast business from the interference of other signal, referring to shown in Figure 8, idiographic flow following (is example to receive multicast/broadcast data):
Step 801: the signal (comprising data-signal and pilot signal) that on the resource of knowing, receives carrying unicast service and multicast/broadcast business.The data-signal of unicast service and multicast/broadcast business is superimposed in the present embodiment.
Step 802: the unicast service of reception and the signal of multicast/broadcast business are carried out Fourier transform (FFT), obtain the frequency domain data of OFDM symbol.Wherein unicast service signal and multicast/broadcast business signal are superimposed.
Step 803: the Signal to Interference plus Noise Ratio that obtains multicast/broadcast business according to the pilot signal of multicast/broadcast business.
Step 804: with the Signal to Interference plus Noise Ratio of multicast/broadcast business (Signal Interference Noise Ratio SINR) compares with preset threshold value, and continues step 805 less than threshold value the time, more than or equal to threshold value the time referring to step 702-705.By avoiding all signal all to adopt the iterative operation of back with threshold ratio mode, make complex operation, also can avoid only adopting once the data that deinterleave, obtain behind the decode operation undesirable under the stronger situation disturbing.
Step 805: the signal after the conversion is carried out and goes here and there conversion.
Step 806: the signal after the conversion is carried out corresponding demodulation operation, calculate respectively multiplexing on same asset all-multicast/broadcasting service and the soft information of the data of unicast service.Wherein, the method for calculating soft information has multiple, obtains soft information as the log-likelihood ratio of calculated data.
Step 807:, deinterleave respectively according to the pattern that interweaves of correspondence to the soft information of each business of obtaining.
Step 808: the soft information after deinterleaving about each business is carried out decode operation respectively, obtain the soft information after the renewal separately.
Step 809: interweave again according to the pattern that interweaves of the correspondence soft information after to each professional renewal, and as the external information of step 806.
Step 810: carry out repeatedly iterative operation, i.e. repeating step 806-809 is until the maximum iteration time that reaches setting.The decoding back obtains soft information and information bit in the step 808 of iteration the last time, and the hard decision value of output information bit, obtains the multicast/broadcast business data that finally need.
Present embodiment can also be in each iterative step 808 hard decision value of output information bit all, and the check digit by information bit judges whether to need to continue iteration, perhaps judges whether to need to continue iteration by other criterion.
Present embodiment has been eliminated the interference of unicast service to multicast/broadcast business by iterative operation, promptly when the received signal energy is low, has realized receiving preferably unicast service data or multicast/broadcast business data, has improved receptivity.
The main flow process of processing method when present embodiment receives the data of multinomial multicast/broadcast business and pilot signal is as follows:
Superposed signal to multinomial multicast/broadcast business is carried out demodulation operation, obtains corresponding data.According to corresponding with the described superposed signal pattern that interweaves to the operation that deinterleaves of corresponding data.To the operation that described data are decoded, one or multinomial multicast/broadcast business data in the multinomial multicast/broadcast business data that need to obtain.
The method that realizes handling multicast/broadcast business data and unicast service data in the present embodiment has more than been described, use description to handle the device of multicast/broadcast business data and unicast service data below, this device is used to send the equipment of multicast/broadcast business and unicast service, referring to shown in Figure 9, comprising: coding unit 901, interleave unit 902, modulating unit 903, string and converting unit 904, amplifying unit 905, superpositing unit 906, inverse transformation block 907, insertion unit 908 and transmitting element 909.Transmit leg equipment is specially base station etc.The multicast/broadcast business data send on identical running time-frequency resource via a plurality of base stations simultaneously, and the identical pattern that interweaves is used to same multicast/broadcast business data in a plurality of base station.The structure of device that is used to send multinomial multicast/broadcast business data is referring to shown in Figure 9 and associated description.
Transmit leg equipment also can comprise scrambling unit and Space Time Coding unit etc., and this figure is not shown.Scrambling unit is used for multinomial multicast/broadcast business data and multinomial unicast service data behind the coding are carried out scrambling respectively.The Space Time Coding unit is used for multinomial multicast/broadcast business data and multinomial unicast service data behind the coding are carried out Space Time Coding.
Accordingly, be used to handle the device of multicast/broadcast business data and unicast service data, this device is used to receive the terminal equipment of multicast/broadcast business and unicast service, mobile phone for example, referring to shown in Figure 10, comprising: receiving element 1001, converter unit 1002, parallel serial conversion unit 1003, demodulating unit 1004, unit 1005 and decoding unit 1006 deinterleave.The structure of device that is used to receive multinomial multicast/broadcast business data is referring to shown in Figure 10 and associated description.
Receiving element 1001 is used to receive the signal of multinomial multicast/broadcast business of carrying and multinomial unicast service.Converter unit 1002 is used for the signal of multinomial multicast/broadcast business and multinomial unicast service is carried out Fourier transform.Parallel serial conversion unit 1003 is used for the multinomial multicast/broadcast business signal after the modulation and multinomial unicast service signal are carried out respectively and go here and there conversion.Demodulating unit 1004 is used for the signal of multinomial multicast/broadcast business after the conversion and multinomial unicast service is carried out demodulation and calculates soft information.The unit 1005 that deinterleaves is used for the multinomial multicast/broadcast business after the demodulation and the data of multinomial unicast service are deinterleaved.Decoding unit 1006 is used for the data of multinomial multicast/broadcast business after deinterleaving and multinomial unicast service are decoded and hard decision.
Receiver equipment comprises that also interleave unit is used for the soft information of decoded multinomial multicast/broadcast business and multinomial unicast service is interweaved, to continue the calculating of soft information.
Be used to handle the system of multicast/broadcast business and unicast service in the present embodiment, comprise that shown in Figure 9 being used to sends the device of multicast/broadcast business data and unicast service data and comprise the equipment of this dispensing device and shown in Figure 10 being used to receives the device of multicast/broadcast business data and unicast service data and comprise the equipment of this receiving system.
The embodiment of the invention is by interlacing multi-address (Interleave Division Multiple Access, IDMA) mode has realized distinguishing preferably between multicast/broadcast business data and the unicast service data, make receiver equipment obtain the data that need more accurately, and improved the utilance of frequency spectrum resource, thereby promoted network capacity, and do not need to improve the Signal to Interference plus Noise Ratio that transmitting power improves signal, saved the emission power consumption.Simultaneously, the multicast/broadcast business that covers a plurality of sub-districts can use identical running time-frequency resource and the pattern that interweaves, and can improve the quality of reception of the receiver equipment that is in cell edge.And the embodiment of the invention interweaves at least two multicast/broadcast business data according to the different patterns that interweaves, and makes receiver equipment distinguish every multicast/broadcast business data preferably.In addition, the embodiment of the invention also improves signal transfer quality by modes such as scrambling or Space Time Coding.
The embodiment of the invention is in the method for improving transmit leg device processes multicast/broadcast business data and unicast service data, also improved the method for receiver equipment processing multicast/broadcast business data and unicast service data, simplified the handling process of receiver equipment, avoided the repeatedly repetitive operation of iteration, perhaps select analytic method flexibly, be convenient to parse more accurately the data that need according to the actual transmissions situation.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (16)
1, the sending method of a kind of unicast service data and multicast/broadcast business data is characterized in that, may further comprise the steps:
Unicast service data and multicast/broadcast business data that needs send are encoded respectively;
Unicast service data and multicast/broadcast business data behind the coding are interweaved respectively, and wherein the pattern that interweaves of unicast service data and multicast/broadcast business data is inequality;
Unicast service data after interweaving and multicast/broadcast business data are modulated to unicast service signal and multicast/broadcast business signal respectively, and are mapped on the identical running time-frequency resource and send.
2, the method for claim 1 is characterized in that, described multicast/broadcast business data comprise the data of two multicast/broadcast business at least, and the pattern that interweaves of wherein every multicast/broadcast business data is inequality.
3, the method for claim 1 is characterized in that, described unicast service data comprise the data of two unicast services at least, and the pattern that interweaves of wherein every unicast service data is inequality.
4, the method for claim 1 is characterized in that, described unicast service data are when neighbor cell sends, and the pattern that interweaves of the unicast service data that each sub-district sends is inequality.
5, the method for claim 1 is characterized in that, the transmitting power of described unicast service signal and multicast/broadcast business signal is identical or different.
6, the method for claim 1 is characterized in that, described multicast/broadcast business data send on identical running time-frequency resource via a plurality of base stations simultaneously, and the identical pattern that interweaves is used to same multicast/broadcast business data in a plurality of base station.
7, a kind of sending method of multicast/broadcast business data is characterized in that, may further comprise the steps:
At least two multicast/broadcast business data that needs send are encoded respectively;
Coded data at least two multicast/broadcast business interweaves respectively, and wherein the pattern that interweaves of each multicast/broadcast business is inequality;
At least two multicast/broadcast business data after interweaving are modulated to each multicast/broadcast business signal respectively, and are mapped on the identical running time-frequency resource and send.
8, method as claimed in claim 7 is characterized in that, described multicast/broadcast business data send on identical running time-frequency resource via a plurality of base stations simultaneously, and the identical pattern that interweaves is used to same multicast/broadcast business data in a plurality of base station.
9, the method for reseptance of a kind of unicast service data and multicast/broadcast business data is characterized in that, may further comprise the steps:
The superposed signal that receives unicast service data and multicast/broadcast business data is carried out demodulation, obtain corresponding data;
The pattern that interweaves according to correspondence deinterleaves to corresponding data;
The data that deinterleave are decoded, obtain unicast service data or multicast/broadcast business data.
10, method as claimed in claim 9, it is characterized in that, the Signal to Interference plus Noise Ratio and the preset threshold value of described superposed signal are compared, and when being lower than described threshold value, obtain the data of other signal correspondence on the running time-frequency resource of described signal place, data according to this other signal correspondence are carried out iterative operation, obtain the unicast service data or the multicast/broadcast business data that need.
11, a kind of dispensing device is characterized in that, comprising:
Coding unit is used for unicast service data and multicast/broadcast business data that needs send are encoded respectively;
Interleave unit is used for unicast service data and multicast/broadcast business data behind the coding are interweaved respectively, and wherein the pattern that interweaves of unicast service and multicast/broadcast business is inequality;
Modulating unit is used for unicast service data after interweaving and multicast/broadcast business data are modulated to unicast service signal and multicast/broadcast business signal respectively;
Superpositing unit is used for unicast service signal and multicast/broadcast business signal map to identical running time-frequency resource;
Transmitting element is used for the unicast service signal is sent on identical running time-frequency resource with the multicast/broadcast business signal.
12, a kind of base station equipment is characterized in that, comprises the described dispensing device of claim 11.
13, a kind of dispensing device is characterized in that, comprising:
Coding unit is used at least two multicast/broadcast business data that needs send are encoded respectively;
Interleave unit is used for the coded data of at least two multicast/broadcast business is interweaved respectively, and wherein the pattern that interweaves of each multicast/broadcast business is inequality;
Modulating unit is used at least two multicast/broadcast business data after interweaving are modulated to each multicast/broadcast business signal respectively;
Superpositing unit is used at least two multicast/broadcast business signal map to identical running time-frequency resource;
Transmitting element is used at least two multicast/broadcast business signals are sent on identical running time-frequency resource.
14, a kind of base station equipment is characterized in that, comprises the described dispensing device of claim 13.
15, a kind of receiving system is characterized in that, comprising:
Demodulating unit is used for the superposed signal that receives unicast service and multicast/broadcast business is carried out demodulation, and obtains corresponding data;
The unit that deinterleaves is used for according to the corresponding pattern that interweaves corresponding data being deinterleaved;
Decoding unit is used for the data that deinterleave are decoded, and obtains unicast service data or multicast/broadcast business data.
16, a kind of receiving system is characterized in that, comprising:
Demodulating unit is used for the superposed signal that receives multinomial multicast/broadcast business is carried out demodulation, and obtains corresponding data;
The unit that deinterleaves is used for according to the corresponding pattern that interweaves corresponding data being deinterleaved;
Decoding unit is used for the data that deinterleave are decoded, and obtains every multicast/broadcast business data in the multinomial multicast/broadcast business data.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101229770A CN101340621A (en) | 2007-07-04 | 2007-07-04 | Transmitting and receiving method and apparatus for multicast/broadcast service |
| PCT/CN2008/071528 WO2009003417A1 (en) | 2007-07-04 | 2008-07-02 | Method and apparatus for sending and receiving multicast/broadcast service |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101229770A CN101340621A (en) | 2007-07-04 | 2007-07-04 | Transmitting and receiving method and apparatus for multicast/broadcast service |
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| Publication Number | Publication Date |
|---|---|
| CN101340621A true CN101340621A (en) | 2009-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101229770A Pending CN101340621A (en) | 2007-07-04 | 2007-07-04 | Transmitting and receiving method and apparatus for multicast/broadcast service |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101340621A (en) |
| WO (1) | WO2009003417A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102256301A (en) * | 2011-07-15 | 2011-11-23 | 西安交通大学 | User selection method for simultaneously meeting unicast and multicast services |
| CN102461298A (en) * | 2009-06-09 | 2012-05-16 | 阿尔卡特朗讯公司 | Allocating interlace multiplex pairs for multicast services |
| WO2016041463A1 (en) | 2014-09-18 | 2016-03-24 | Huawei Technologies Co., Ltd. | Common broadcast channel low papr signaling in massive mimo systems |
| CN107070541A (en) * | 2016-02-05 | 2017-08-18 | 北京三星通信技术研究有限公司 | Multiple access method and corresponding launching technique, Receiver And Transmitter |
| US9973362B2 (en) | 2014-03-07 | 2018-05-15 | Huawei Technologies Co., Ltd. | Common broadcast channel low PAPR signaling in massive MIMO systems |
| CN115103202A (en) * | 2022-04-27 | 2022-09-23 | 北京歌华有线电视网络股份有限公司 | IP video live broadcast transmission method and system capable of resisting network degradation |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7958252B2 (en) * | 2004-05-04 | 2011-06-07 | Qualcomm Incorporated | System for scalable transmission of content in a data network |
| NO20053902L (en) * | 2005-08-19 | 2007-02-20 | Telenor Asa | Method and system for signaling in an optical packet switched network |
-
2007
- 2007-07-04 CN CNA2007101229770A patent/CN101340621A/en active Pending
-
2008
- 2008-07-02 WO PCT/CN2008/071528 patent/WO2009003417A1/en active Application Filing
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102461298A (en) * | 2009-06-09 | 2012-05-16 | 阿尔卡特朗讯公司 | Allocating interlace multiplex pairs for multicast services |
| CN102461298B (en) * | 2009-06-09 | 2014-11-05 | 阿尔卡特朗讯公司 | Allocating interlace multiplex pairs for multicast services |
| CN102256301A (en) * | 2011-07-15 | 2011-11-23 | 西安交通大学 | User selection method for simultaneously meeting unicast and multicast services |
| CN102256301B (en) * | 2011-07-15 | 2014-06-04 | 西安交通大学 | User selection method for simultaneously meeting unicast and multicast services |
| US9973362B2 (en) | 2014-03-07 | 2018-05-15 | Huawei Technologies Co., Ltd. | Common broadcast channel low PAPR signaling in massive MIMO systems |
| WO2016041463A1 (en) | 2014-09-18 | 2016-03-24 | Huawei Technologies Co., Ltd. | Common broadcast channel low papr signaling in massive mimo systems |
| EP3186938A4 (en) * | 2014-09-18 | 2017-09-20 | Huawei Technologies Co., Ltd. | Common broadcast channel low papr signaling in massive mimo systems |
| CN107070541A (en) * | 2016-02-05 | 2017-08-18 | 北京三星通信技术研究有限公司 | Multiple access method and corresponding launching technique, Receiver And Transmitter |
| CN107070541B (en) * | 2016-02-05 | 2021-07-09 | 北京三星通信技术研究有限公司 | Multiple access method and corresponding transmission method, receiver and transmitter |
| CN115103202A (en) * | 2022-04-27 | 2022-09-23 | 北京歌华有线电视网络股份有限公司 | IP video live broadcast transmission method and system capable of resisting network degradation |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2009003417A1 (en) | 2009-01-08 |
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