CN102638851B - A kind of data sharing and sending method, Apparatus and system - Google Patents
A kind of data sharing and sending method, Apparatus and system Download PDFInfo
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- CN102638851B CN102638851B CN201110036957.8A CN201110036957A CN102638851B CN 102638851 B CN102638851 B CN 102638851B CN 201110036957 A CN201110036957 A CN 201110036957A CN 102638851 B CN102638851 B CN 102638851B
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Abstract
The invention discloses a kind of data sharing and sending method, Apparatus and system, comprising: the data needing to carry out down collaboration multi-point of its administration UE are determined in Serving cell; And the data determined are transferred to each cooperation cell of Serving cell.Also comprise: the data that the reception Serving cell, each cooperation cell of carrying out down collaboration multi-point with the Serving cell belonging to UE sends; And the data received are processed; And to the data after UE transmission processing.The scheme that theres is provided of the embodiment of the present invention is provided, achieves sharing of sending to the data of UE between each cooperation cell, also achieve the transparent transmission of the down collaboration multiple spot to data.
Description
Technical field
The present invention relates to the down collaboration multiple spot CoMP transmission technology in wireless communication technology field, particularly relate to a kind of data sharing and sending method, Apparatus and system.
Background technology
Descending CoMP transmission is that LTE will strengthen one of version emphasis consideration technology future, and joint transmission is then the important implementation of descending CoMP transmission one.In joint transmission scheme, the data of multiple cooperation cell (comprising Serving cell) to the user equipment (UE) that Serving cell is administered carry out combined coding, then together send on same physical time-frequency resource block.In order to the specification that compatible LTE is existing or formulating, in descending CoMP transmission process, the data not increasing extra signaling UE current transmission are CoMP transmission states, UE receives data according to non-CoMP scheme completely, namely from UE side, the CoMP transmission of multiple cooperation cell is equivalent to the non-CoMP transmission in single community, and namely this is transparent transmission pattern.Transparent transmission makes do not have standardisation requirements to UE, does not need to improve existing UE.Realize transparent transmission and need following two conditions:
Data are shared in all cooperation cell (comprising Serving cell);
All cooperation cell (comprising Serving cell) perform identical process to data.
Wherein, before sending the data to UE, needing to carry out a series of process to sent data to operate, in order to realize transparent transmission, ensureing after sending to UE to sent the data after data processing, UE can parse identical data, each cooperation cell is needed to share identical data, but, also there is no clear and definite method in prior art, realize data sharing between each cooperation cell, and then the transparent transmission of the down collaboration multiple spot to data cannot be realized.
Summary of the invention
The embodiment of the present invention provides a kind of data sharing and sending method, Apparatus and system, sends to the data of UE sharing between each cooperation cell in order to realization.
The embodiment of the present invention provides a kind of data sharing method, comprising:
The data needing to carry out down collaboration multi-point of its administration user equipment (UE) are determined in Serving cell;
The data determined are transferred to each cooperation cell of described Serving cell.
The embodiment of the present invention also provides a kind of data transmission method for uplink, comprising:
Each cooperation cell of carrying out down collaboration multi-point with the Serving cell belonging to user equipment (UE) receives the data that described Serving cell sends; And
Described data are processed; And
Data after described UE transmission processing.
The embodiment of the present invention also provides the data sharing device in a kind of Serving cell, comprising:
Determining unit, for determining the data needing to carry out down collaboration multi-point of this Serving cell administration user equipment (UE);
First transmitting element, for being transferred to each cooperation cell of described Serving cell by the data determined.
The embodiment of the present invention also provides the data sending device in a kind of cooperation cell, comprising:
Receiving element, the data that the Serving cell for receiving belonging to user equipment (UE) sends;
Second processing unit, for processing described data;
Second transmitting element, for the data after described UE transmission processing.
The embodiment of the present invention also provides a kind of data Transmission system, comprising: the data sharing device in Serving cell and carry out the data sending device in each cooperation cell of down collaboration multi-point with described Serving cell, wherein:
Described data sharing device, for determining the data needing to carry out down collaboration multi-point of its administration UE; And the described data sending device data determined are transferred in described each cooperation cell;
Described data sending device, for receiving the data that described data sharing device sends; And described data are processed; And to the data after described UE transmission processing.
In the method that the embodiment of the present invention provides, the data needing to carry out down collaboration multi-point of its administration UE are determined in Serving cell, and the data determined are transferred to each cooperation cell of Serving cell, thus achieve send to the data of UE between each cooperation cell share; And, after each cooperation cell of carrying out down collaboration multi-point with Serving cell receives the data that Serving cell sends, these data are processed, and to the data after UE transmission processing, thus achieve all cooperation cell identical process is performed to identical data, and the data after process are sent to UE, and then achieve the transparent transmission of the down collaboration multiple spot to data.
Accompanying drawing explanation
The flow chart of the data sharing method that Fig. 1 provides for the embodiment of the present invention;
The flow chart of the data transmission method for uplink that Fig. 2 provides for the embodiment of the present invention;
The flow chart of the data sharing that Fig. 3 provides for the embodiment of the present invention 1 and sending method;
The flow chart of the data sharing that Fig. 4 provides for the embodiment of the present invention 2 and sending method;
The flow chart of the Cooperation controlling method for sending information that Fig. 5 provides for the embodiment of the present invention 3;
The structural representation of the data sharing device in the Serving cell that Fig. 6 provides for the embodiment of the present invention 4;
The structural representation of the data sending device in the cooperation cell that Fig. 7 provides for the embodiment of the present invention 5;
The structural representation of the data Transmission system that Fig. 8 provides for the embodiment of the present invention 6.
Embodiment
In order to provide realize send to the data of UE between each cooperation cell share, and the scheme realized the transparent transmission of the down collaboration multiple spot of data, embodiments provide a kind of data sharing and sending method, Apparatus and system, below in conjunction with Figure of description, the preferred embodiments of the present invention are described, be to be understood that, preferred embodiment described herein, only for instruction and explanation of the present invention, is not intended to limit the present invention.And when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
The embodiment of the present invention provides a kind of data sharing method, as shown in Figure 1, comprising:
Step S101, Serving cell determine that it administers the data needing to carry out down collaboration multi-point of UE.
Step S102, the data determined are transferred to each cooperation cell of Serving cell.
The embodiment of the present invention also provides a kind of data transmission method for uplink, as shown in Figure 2, comprising:
The data that step S201, the reception Serving cell, each cooperation cell of carrying out down collaboration multi-point with Serving cell belonging to UE send.
Step S202, to receive data process.
Step S203, to the data after UE transmission processing.
Below in conjunction with accompanying drawing, with specific embodiment, method provided by the invention and device and corresponding system are described in detail.
Embodiment 1:
The present embodiment 1 proposes a kind of data sharing and sending method, and wherein, the data shared are source data, and namely serving cell transmission is source data to the data of each cooperation cell, as shown in Figure 3, specifically comprises the steps:
Step S301, Serving cell determine that it administers the source data needing to carry out down collaboration multi-point of UE.
Step S302, the source data determined is transferred to each cooperation cell of this Serving cell.
In this step, when transmission sources data, the wireless network temporary identifier RNTI of this UE can also be transferred to each cooperation cell, be used for carrying out scrambling process to data by each cooperation cell for follow-up.
Concrete, the RNTI of X2 interface transmission sources data between cell base station and UE can be used in this step.
Receive the source data of serving cell transmission in each cooperation cell after, namely achieve sharing of the source data needing to carry out down collaboration multi-point.But before sending the data to UE, Serving cell and other each cooperation cell need to carry out a series of process operation to data, such as, in existing Rel.8/9/10 specification, clearly definition needs the process operation performed to comprise: chnnel coding, scrambling, modulation, generation demodulated reference signal DM-RS, precoding and physical resource map, and specifically describe as follows.
Step S303, chnnel coding is carried out to source data, obtain the data after encoding.
Be specifically as follows first according to transmission block to code word mapped identification, determine the code word passage that source data is encoded, and use corresponding code word passage, according to fixed modulation coding mode, source data is encoded.
Step S304, to coding after data carry out scrambling, obtain the data after scrambling, this step specifically comprises:
First generate the scramble sequence that scrambling process needs, in LTE, the scrambler that the pseudorandom Gold code of 31 bit lengths generates of the data acquisition after UE chnnel coding carries out scrambling.Gold code sequence is by the first M sequence x
1with the second M sequence x
2generate, wherein, x
1initial value be fixed value, to have nothing to do with Serving cell and UE, and x
2the initial value (being represented by decimal number) of (binary system) adopts following formula to determine:
This initial value is relevant to Serving cell and UE, wherein, and n
rNTIrepresent the wireless network temporary identifier RNTI of UE, span is [1,65523], q=0 or 1, corresponding code word 0 or code word 1, n
srepresent the timeslot number in radio frames, span is [1,19],
represent Serving cell physical identification PCI, span is [1,503].As can be seen here, determine that UE scramble sequence relevant parameter comprises the timeslot number n of the RNTI of UE, the PCI of Serving cell, q value and transmission data
s.
In this step, the relevant parameter generating scramble sequence can be determined before carrying out scramble sequence calculating, such as, can obtain for q value from the Cooperation controlling information received (being received in follow-up being described in detail of relevant Cooperation controlling information); For timeslot number n
s, when it is fixing use, can preserve in this locality in advance, if on-fixed use, then obtain from the Cooperation controlling information received; For the PCI of the Serving cell of UE, propose when forming cooperation cell set in the present embodiment, each cooperation cell, all at the PCI of each cooperation cell of local maintenance, so when determining scramble sequence, directly can obtain the PCI of the Serving cell of the UE preserved from this locality; For the RNTI of UE, together receive with source data in above-mentioned steps S302.
After determining scramble sequence, use scramble sequence to carry out scrambling to the data after coding, obtain the data after scrambling.
Step S305, the data after scrambling to be modulated, obtain the data after modulating.
When modulating, using corresponding code word passage, according to fixed modulation coding mode, the data after scrambling being modulated.
Step S306, generation DM-RS sequence.
The DM-RS of data is also generated by pseudo random sequence, and this pseudo random sequence initial value adopts following formula to determine:
Wherein, n
scidbe the sequence scrambling ID be associated with PDSCH transmission, value is 0 or 1.As can be seen here, the DM-RS sequence relevant parameter of UE comprises the PCI of Serving cell, the timeslot number n of transmission data
sand n
scid.
In this step, for n
scid, can be determined by the DM-RS sequence indication in Cooperation controlling information; For PCI and n of Serving cell
sthe mode identical with above-mentioned steps S304 can be adopted to obtain, be no longer described in detail at this.
DM-RS sequence is generated according to the random sequence initial value determined.
This step and above-mentioned steps S303-305 do not have strict sequencing.
Step S307, according to fixed precoding coefficients, to modulation after data and DM-RS sequence carry out precoding, obtain the DM-RS sequence after the data after precoding and precoding.
In this step, precoding coefficients also can obtain from the Cooperation controlling information received.
After completing the precoding processing in this step, namely obtain the data after source data is processed.
Step S308, according to fixed Resource Allocation Formula, to comprise: resource allocation type identifies, and resource frequency domain position information and resource time-domain position information, carry out physical resource mapping to the data after precoding and the DM-RS sequence after precoding.
Step S309, each cooperation cell use the physical resource mapped to send the data after precoding and the DM-RS sequence after precoding, namely at time slot n to UE
sdata in corresponding Physical Downlink Shared Channel PDSCH after transmission processing, the DM-RS sequence after corresponding channel transmission processing.
Step S310, Serving cell are at time slot n
ssend the DCI relevant to these data in corresponding physical downlink control channel PDCCH, use when receiving data for UE.
In the present embodiment 1, by Serving cell, source data is sent to other each cooperation cell, achieve sharing of source data, and carry out identical handling process by each cooperation cell for the source data shared, obtain the data after processing, and the data after process are sent to UE, achieve the transparent transmission of the down collaboration multiple spot to data.
Embodiment 2:
The present embodiment 2 proposes a kind of data sharing and sending method, wherein, the data shared be to the scrambling process of source data coding after data, namely serving cell transmission give the data of each cooperation cell be to source data coding scrambling process after data, as shown in Figure 4, specifically comprise the steps:
Step S401, Serving cell determine that it administers the source data needing to carry out down collaboration multi-point of UE.
Step S402, chnnel coding is carried out to source data, obtain the data after encoding.
Be specifically as follows first according to transmission block to code word mapped identification, determine the code word passage that source data is encoded, and use corresponding code word passage, according to fixed modulation coding mode, source data is encoded.
Step S403, to coding after data carry out scrambling, obtain the data after scrambling, this step specifically comprises:
First generate the scramble sequence that scrambling process needs, in LTE, the scrambler that the pseudorandom Gold code of 31 bit lengths generates of the data acquisition after UE chnnel coding carries out scrambling.Gold code sequence is by the first M sequence x
1with the second M sequence x
2generate, wherein, x
1initial value be fixed value, to have nothing to do with Serving cell and UE, and x
2the initial value (being represented by decimal number) of (binary system) adopts following formula to determine:
This initial value is relevant to Serving cell and UE, wherein, and n
rNTIrepresent the wireless network temporary identifier RNTI of UE, span is [1,65523], q=0 or 1, corresponding code word 0 or code word 1, n
srepresent the timeslot number in radio frames, span is [1,19],
represent Serving cell physical identification PCI, span is [1,503].As can be seen here, determine that UE scramble sequence relevant parameter comprises the timeslot number n of the RNTI of UE, the PCI of Serving cell, q value and transmission data
s.
In this step, the relevant parameter generating scramble sequence can be determined before carrying out scramble sequence calculating, such as, can obtain for q value from the Cooperation controlling information received (being received in follow-up being described in detail of relevant Cooperation controlling information); For timeslot number n
s, when it is fixing use, can preserve in this locality in advance, if on-fixed use, then obtain from the Cooperation controlling information received; For the PCI of the Serving cell of UE, propose when forming cooperation cell set in the present embodiment, each cooperation cell, all at the PCI of each cooperation cell of local maintenance, so when determining scramble sequence, directly can obtain the PCI of the Serving cell of the UE preserved from this locality.
After determining scramble sequence, use scramble sequence to carry out scrambling to the data after coding, obtain the data after scrambling.
Step S404, by obtain to source data coding scrambling after data, be transferred to each cooperation cell of this Serving cell.
Concrete, the data after the X2 interface transfer encoding scrambling between cell base station can be used in this step.
Receive the data of serving cell transmission in each cooperation cell after, namely achieve sharing of the data needing to carry out down collaboration multi-point.But before sending the data to UE, need to carry out a series of process operation to data, such as, in existing Rel.8/9/10 specification, clearly definition needs the process operation performed to comprise: chnnel coding, scrambling, modulation, generation demodulated reference signal DM-RS, precoding and physical resource map, data after coding scrambling are also needed to the process operation carried out, specifically describe as follows.
Step S405, the data after scrambling to be modulated, obtain the data after modulating.
When modulating, using corresponding code word passage, according to fixed modulation coding mode, the data after scrambling being modulated.
Step S406, generation DM-RS sequence.
The DM-RS of data is also generated by pseudo random sequence, and this pseudo random sequence initial value adopts following formula to determine:
Wherein, n
scidbe the sequence scrambling ID be associated with PDSCH transmission, value is 0 or 1.As can be seen here, the DM-RS sequence relevant parameter of UE comprises the PCI of Serving cell, the timeslot number n of transmission data
sand n
scid.
In this step, for n
scid, can be determined by the DM-RS sequence indication in Cooperation controlling information; For PCI and n of Serving cell
sthe mode identical with above-mentioned steps S304 can be adopted to obtain, be no longer described in detail at this.
DM-RS sequence is generated according to the random sequence initial value determined.
This step and above-mentioned steps S405 do not have strict sequencing.
Step S407, according to fixed precoding coefficients, to modulation after data and DM-RS sequence carry out precoding, obtain the DM-RS sequence after the data after precoding and precoding.
In this step, precoding coefficients also can obtain from the Cooperation controlling information received.
After completing the precoding processing in this step, namely obtain the data after source data is processed.
Step S408, according to fixed Resource Allocation Formula, to comprise: resource allocation type identifies, and resource frequency domain position information and resource time-domain position information, carry out physical resource mapping to the data after precoding and the DM-RS sequence after precoding.
Step S409, each cooperation cell use the physical resource mapped to send the data after precoding and the DM-RS sequence after precoding, namely at time slot n to UE
sdata in corresponding Physical Downlink Shared Channel PDSCH after transmission processing, the DM-RS sequence after corresponding channel transmission processing.
Step S410, Serving cell are at time slot n
ssend the DCI relevant to these data in corresponding physical downlink control channel PDCCH, use when receiving data for UE.
In the present embodiment 2, by Serving cell by the data after scrambling of encoding to source data, send to its each cooperation cell, achieve sharing of data, and carry out identical handling process by each cooperation cell for the data shared, obtain the data after processing, and the data after process are sent to UE, achieve the transparent transmission of the down collaboration multiple spot to data.
In above-described embodiment 1, what share between each cooperation cell is source data, compare in embodiment 2 and share the data after to the scrambling of source data coding, the data volume of source data is less, so, embodiment 1 scheme compares embodiment 2 scheme, require lower to the interface bandwidth of transmission data, and efficiency of transmission is higher, and, consider from HARQ angle, embodiment 1 scheme is more flexible; But, because embodiment 1 scheme needs other each cooperation cell except Serving cell all to need to encode to source data and scrambling process, so, compare embodiment 2 scheme, occupy the part computational resource of other cooperation cell, namely embodiment 2 scheme compares embodiment 1 scheme, lower to the computational resource requirements of other cooperation cell, and higher to the efficiency that processes of data shared.
Above-described embodiment 1 scheme and embodiment 2 scheme respectively have pluses and minuses, can select according to concrete application scenarios.
Embodiment 3:
For in above-described embodiment 1 and embodiment 2 before sending data to UE, control information required for process operation is carried out to data, such as, carry out chnnel coding, scrambling, modulation, generation demodulated reference signal DM-RS, precoding and the control information required for physical resource mapping, before sending the data to UE, can send to each cooperation cell, the present embodiment 3 proposes a kind of Cooperation controlling method for sending information, above-mentioned control information is sent to each cooperation cell, specifically comprises:
Determine the Cooperation controlling information for processing data and sending before sending data to UE;
Cooperation controlling information is sent to each cooperation cell of data being carried out to down collaboration multi-point.
Under the non-CoMP transmission pattern of LTE, only have the Serving cell of UE to map process operation to needing the data sending to UE to comprise chnnel coding, scrambling, modulation, generation DM-RS, precoding and physical resource, associated control parameters is also determined by Serving cell.So, in the embodiment of the present invention, a logic control entity CoMP processing unit is proposed, for determining above-mentioned Protocol Control Information and sending to each cooperation cell, specifically can be integrated on Serving cell, for performing above-mentioned Cooperation controlling method for sending information, namely each associated control parameters is determined, and send to other each cooperation cell, but this can take a large amount of computational resource in Serving cell, reduce the performance of Serving cell, so, also this CoMP processing unit can be integrated on a cell base station in each cooperation cell, or be not integrated in any one cooperation cell, but independent setting, for the down collaboration multi-point of the data for each cooperation cell.
Be independent setting for this CoMP processing unit below, above-mentioned Cooperation controlling method for sending information be described in detail, as shown in Figure 5, comprise:
In step S501, the present embodiment 3, for the control information that above-mentioned Cooperation controlling information specifically comprises, according to current data are processed required for control information be example, when needing data to be processed to be source data, Cooperation controlling information can comprise: scrambling instruction information, Modulation and Coding Scheme indication information, DM-RS sequence indication, precoding indication information and Resource Allocation Formula indication information;
When need data to be processed be to the scrambling process of source data coding after data time, send to the Cooperation controlling information of the Serving cell belonging to UE to comprise: Modulation and Coding Scheme indication information, DM-RS sequence indication, precoding indication information and Resource Allocation Formula indication information; The Cooperation controlling information of other each cooperation cell except Serving cell is sent to comprise: modulation scheme indication information, DM-RS sequence indication, precoding indication information and Resource Allocation Formula indication information.
Wherein, scrambling instruction information is used for carrying out scrambling to data, Modulation and Coding Scheme indication information is used for encoding to data and modulating, DM-RS sequence indication is for generating DM-RS sequence, precoding indication information is used for carrying out precoding to data and DM-RS sequence, and Resource Allocation Formula indication information is used to indicate the physical resource sending data and DM-RS sequence.
Further, scrambling instruction information specifically comprises: the q value information of corresponding code word 0 or 1;
Modulation and Coding Scheme indication information comprises: modulation coding mode indication information and transmission are near code word mapped identification;
Modulation scheme indication information comprises: modulation system indication information and transmission are near code word mapped identification;
DM-RS sequence indication comprises: DM-RS sequence scrambling ID;
Precoding indication information comprises: precoding coefficients;
Resource Allocation Formula indication information comprises: resource allocation type mark and resource frequency domain position information.
And, when assigned timeslot in the radio frames that the resource time-domain position information (as timeslot number) required for processing data is fixing, resource time-domain position information can not be comprised in above-mentioned Cooperation controlling information, but when a certain assigned timeslot in the radio frames that resource time-domain position information is not fixing, resource time-domain position information is also comprised in above-mentioned Cooperation controlling information, namely corresponding, scrambling instruction information, DM-RS sequence indication and Resource Allocation Formula indication information all also comprise resource time-domain position information.
For different cooperation cell, in the control information required when processing data, above-mentioned scrambling instruction information, Modulation and Coding Scheme indication information, demodulated reference signal DM-RS sequence indication and Resource Allocation Formula indication information are all identical, only have precoding indication information to be different for different cooperation cell.
So the precoding coefficients in above-mentioned Cooperation controlling information, specifically the following two kinds mode can be adopted:
First kind of way: include the precoding coefficients that all each cooperation cell are corresponding respectively, cooperation cell can obtain the precoding coefficients corresponding with self from Cooperation controlling information;
The second way: the Cooperation controlling information sent for different cooperation cell is different, difference is only that precoding coefficients is different, namely only comprises the precoding coefficients that the cooperation cell of this Cooperation controlling information of reception is corresponding in Cooperation controlling information.
When determining Cooperation controlling information, need to obtain some parameter informations, in the present embodiment 3, CoMP processing unit receives the parameter information for determining Cooperation controlling information that each cooperation cell sends, for each control information specifically comprised in above-mentioned Cooperation controlling information, be described below respectively:
The q value information of corresponding code word 0 or 1: when the data sent only use a transmission block to send, a code word passage (code word 0 passage) is then only used to encode to it and modulate, when the data sent need use two transmission blocks to send, except code word 0 passage, another code word passage (code word 1 passage) is also used to encode to it and modulate, then corresponding with code word 0 passage q value is 0, and the q value corresponding with code word 1 passage is 1.
So, in the present embodiment 3, by Serving cell, the quantity information sending the transmission block that data use can be sent to CoMP processing unit, also after determining q value information, directly the q value information determined can be sent to CoMP processing unit.
Modulation coding mode or modulation system: when determining modulation coding mode or modulation system, need the channel condition information considering each cooperation cell, so required parameter information sends to CoMP processing unit by each cooperation cell, by CoMP processing unit according to the parameter information received from each cooperation cell, the determination algorithm of setting is adopted to determine.
Transmission block is to code word mapped identification: when only using a transmission block to send data, this transmission block and code word 0 map, namely characterize and use the data of code word 0 passage to this transmission block encode and modulate, when use two transmission blocks send data, two transmission blocks map with code word 0 and 1 respectively, namely characterize and use the data of the transmission block of code word 0 and 1 passage pair and its mapping encode and modulate, after specifically can determining transmission block to code word mapping result by Serving cell, directly the transmission block characterizing mapping result is sent to CoMP processing unit to code word mapped identification, also the parameter information determined required for mapping result can be sent to CoMP processing unit, be determined by CoMP processing unit.
DM-RS sequence scrambling ID: be the sequence scrambling ID be associated with PDSCH transmission, possible value is 0 or 1, this information can be undertaken determining directly sending to CoMP processing unit afterwards by Serving cell.
Resource Allocation Formula indication information: resource allocation type mark, resource frequency domain position information and resource time-domain position information included by Resource Allocation Formula indication information, need with reference to the current resource service condition in each cooperation cell when determining, so, need each cooperation cell that the resource using information of self is sent to CoMP processing unit, determined by the dispatching algorithm of CoMP processing unit according to setting.
Precoding coefficients: because the precoding coefficients used for different cooperation cell is different, so need each cooperation cell all to send the parameter information himself determined required for precoding coefficients to CoMP processing unit, such as, each cooperation cell reports the channel condition information determined required for precoding coefficients to CoMP processing unit, this channel condition information can be that UE feeds back to cooperation cell, also can obtain according to UE upstream detection pilot frequency Signal estimation cooperation cell.
Step S502, CoMP processing unit receive that each cooperation cell sends for determine Cooperation controlling information parameter information after, according to the parameter information determination Cooperation controlling information received, for the relevant parameter information received in each control information specifically comprised in above-mentioned Cooperation controlling information and above-mentioned steps S301, be described below respectively:
The q value information of corresponding code word 0 or 1: when receive be the quantity information of the transmission block that transmission data that Serving cell sends use time, the code word passage used then is determined according to the quantity information of transmission block, and determine that the q value corresponding with code word 0 passage is 0, the q value corresponding with code word 1 passage is 1;
When receive be Serving cell send q value information time, then directly obtain.
Modulation coding mode or modulation system: receive the determination modulation coding mode of each cooperation cell transmission or the parameter information required for modulation system, and determine according to the determination algorithm of setting.
Transmission block is to code word mapped identification: when receive be the determination transmission block that sends of Serving cell to parameter information required for code word mapping result time, CoMP processing unit determines mapping result according to set algorithm, and determines mapped identification further;
When receive be the transmission block of sign mapping result that sends of Serving cell to code word mapped identification time, then directly obtain.
DM-RS sequence scrambling ID: carrying the message of DM-RS sequence scrambling ID of sending from the Serving cell received obtains.
Resource Allocation Formula indication information: according to the resource using information of each cooperation cell, adopts the dispatching algorithm of setting to determine.
Precoding coefficients: the parameter information required for the determination precoding coefficients that each cooperation cell reports, as channel condition information, adopts set algorithm to determine.
In the present embodiment 3, the above-mentioned parameter information according to receiving being determined to the specific algorithm of each control information, various algorithm of the prior art can be adopted, be no longer described in detail at this.
Cooperation controlling information, after determining Cooperation controlling information, is sent to each cooperation cell by step S503, CoMP processing unit.
Based on each control information specifically comprised in above-mentioned Cooperation controlling information, the embodiment of the present invention proposes a kind of message format carrying this Cooperation controlling information, specific as follows:
The first message format: when the data processed are source data, send to the Protocol Control Information of each cooperation cell identical, carry the message format of this Cooperation controlling information, specifically comprise:
Modulation coding mode subdomain: for carrying modulation coding mode indication information; And, this modulation coding mode subdomain comprises: the modulation coding mode subdomain of code word 0 correspondence and the modulation coding mode subdomain of code word 1 correspondence, instruction code word 0 passage corresponding is respectively encoded to data and modulates used modulation coding mode, and code word 1 passage is encoded to data and modulates used modulation coding mode;
And, because code word 0 is relevant with q value information with the use of 1 passage, namely be 0 and 1 with code word 0 passage and the corresponding respectively q value of code word 1 passage, so, the modulation coding mode subdomain of code word 0 and code word 1 correspondence can be used to characterize the q value information corresponding with code word 0 or 1, such as, when each bit of the modulation coding mode subdomain of code word 1 correspondence is full 0, represent that code word 1 passage does not use, and then can characterize that q value is only corresponding with code word 00, otherwise, characterize q value and comprise respectively corresponding with code word 0 and code word 10 and 1;
Transmission block to code word mapped identification subdomain, for carrying transmission block to code word mapped identification;
DM-RS sequence scrambling ID indicates subdomain, for carrying DM-RS sequence scrambling ID;
Precoding coefficients subdomain, for carrying precoding coefficients; As previously mentioned, precoding coefficients entrained by this subdomain can comprise the precoding coefficients that all each cooperation cell use, and also only can comprise the precoding coefficients of the cooperation cell use receiving this Cooperation controlling information, preferably, in order to reduce the quantity of Cooperation controlling information, adopt the latter's mode.
Resource allocation type Identity sub-domain, for carrying resource allocation type mark;
Downlink resource distributes subdomain, for carrying resource frequency domain position information, or also carries resource time-domain position information.
When the data processed are the data to the scrambling process of source data coding, send to the Protocol Control Information of Serving cell and other each cooperation cell can be different, the message format carrying this Cooperation controlling information accordingly also can be different:
The second message format, for the message format sending to Serving cell, specifically can adopt the message format identical with the first message format above-mentioned, difference is not need to carry scrambling instruction information, so the modulation coding mode subdomain in message no longer needs to characterize scrambling instruction information, namely do not need the q value information characterizing corresponding code word 0 or 1;
The third message format, for the message format sending to other Serving cell, specifically comprise: the transmission block in the first message above-mentioned indicates subdomain, precoding coefficients subdomain, resource allocation type Identity sub-domain and downlink resource to distribute subdomain to code word mapped identification subdomain, DM-RS sequence scrambling ID; In addition, also comprise modulation system subdomain, for carrying modulation system indication information.
In the present embodiment 3, by the interface being exclusively used in cooperative transmission control information arranged, the message of carrying Cooperation controlling information can be sent to each cooperation cell.
The Cooperation controlling method for sending information that theres is provided of above-described embodiment 3 is provided, namely achieves the distribution of controling parameters between each cooperation cell required for data are processed.
Embodiment 4:
Based on same inventive concept, according to the data sharing method that the above embodiment of the present invention provides, correspondingly, the embodiment of the present invention 4 additionally provides the data sharing device in a kind of Serving cell, and its structural representation as shown in Figure 6, specifically comprises:
Determining unit 601, for determining the data needing to carry out down collaboration multi-point of this Serving cell administration user equipment (UE);
First transmitting element 602, for being transferred to each cooperation cell of described Serving cell by the data determined.
Preferably, described first transmitting element 602, also for the wireless network temporary identifier RNTI of described UE is transferred to described each cooperation cell.
Preferably, also comprise:
First processing unit 603, for determine this Serving cell administration UE need to carry out the data of down collaboration multi-point after, chnnel coding is carried out to described data, obtain encode after data;
Scrambling is carried out to the data after coding, obtains the data after scrambling;
Described first transmitting element, specifically for being transferred to each cooperation cell of described Serving cell by the data after scrambling.
Embodiment 5:
Based on same inventive concept, according to the data transmission method for uplink that the above embodiment of the present invention provides, correspondingly, the embodiment of the present invention 5 additionally provides the data sending device in a kind of cooperation cell, and its structural representation as shown in Figure 7, specifically comprises:
Receiving element 701, the data that the Serving cell for receiving belonging to user equipment (UE) sends;
Second processing unit 702, for processing described data;
Second transmitting element 703, for the data after described UE transmission processing.
Preferably, described second processing unit 702, specifically for carrying out chnnel coding to described data, obtains the data after encoding; And scrambling is carried out to the data after coding, obtain the data after scrambling; And the data after scrambling are modulated, obtain the data after modulating; And generate demodulated reference signal DM-RS sequence; And precoding is carried out to the data after modulation and described DM-RS sequence, obtain the DM-RS sequence after the data after precoding and precoding.
Preferably, described receiving element 701, also for receiving the wireless network temporary identifier RNTI of the described UE that described Serving cell sends;
Described second processing unit 702, specifically for the RNTI of the physical identification PCI according to described Serving cell, resource time-domain position information, described UE and the q value information of corresponding code word 0 or 1, generates scramble sequence; And use described scramble sequence to carry out scrambling to the data after coding, obtain the data after scrambling.
Preferably, described second processing unit 702, specifically for modulating described data, obtains the data after modulating; And generate DM-RS sequence; And precoding is carried out to the data after modulation and described DM-RS sequence, obtain the DM-RS sequence after the data after precoding and precoding.
Preferably, described second transmitting element 703, specifically for carrying out physical resource mapping to the data after precoding and the DM-RS sequence after precoding; And use the physical resource mapped to send the data after precoding and the DM-RS sequence after precoding to UE.
Embodiment 6:
Based on same inventive concept, the data sharing provided according to the above embodiment of the present invention and sending method, correspondingly, the embodiment of the present invention 6 additionally provides a kind of data Transmission system, its structural representation as shown in Figure 8, specifically comprise: the data sharing device 801 in Serving cell and the data sending device 802 carried out with described Serving cell in each cooperation cell of down collaboration multi-point, wherein:
Described data sharing device 801, for determining the data needing to carry out down collaboration multi-point of its administration UE; And the data determined are transferred to the data sending device 802 of described each cooperation cell;
Described data sending device 802, for receiving the data that described data sharing device 801 sends; And described data are processed; And to the data after described UE transmission processing.
In sum, the scheme that the embodiment of the present invention provides, comprising: the data needing to carry out down collaboration multi-point of its administration UE are determined in Serving cell; And the data determined are transferred to each cooperation cell of Serving cell.Also comprise: the data that the reception Serving cell, each cooperation cell of carrying out down collaboration multi-point with the Serving cell belonging to UE sends; And the data received are processed; And to the data after UE transmission processing.The scheme that theres is provided of the embodiment of the present invention is provided, achieves sharing of sending to the data of UE between each cooperation cell, also achieve the transparent transmission of the down collaboration multiple spot to data.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (13)
1. a data sharing method, is characterized in that, comprising:
The data needing to carry out down collaboration multi-point of its administration user equipment (UE) are determined in Serving cell;
The data determined are transferred to each cooperation cell of described Serving cell;
Described method also comprises: determine the Cooperation controlling information for processing data and sending before sending data to UE; Cooperation controlling information is sent to each cooperation cell of data being carried out to down collaboration multi-point; Wherein, Cooperation controlling information comprises: scrambling instruction information, Modulation and Coding Scheme indication information, DM-RS sequence indication, precoding indication information and Resource Allocation Formula indication information; Precoding indication information is different for different cooperation cell;
Serving cell determine its administration UE need to carry out the data of down collaboration multi-point after, also comprise: chnnel coding is carried out to described data in Serving cell, obtain encode after data; Scrambling is carried out to the data after coding, obtains the data after scrambling; The data determined are transferred to each cooperation cell of described Serving cell, are specially: each cooperation cell data after scrambling being transferred to described Serving cell.
2. the method for claim 1, is characterized in that, when the data determined are transferred to each cooperation cell of described Serving cell, also comprises:
The wireless network temporary identifier RNTI of described UE is transferred to described each cooperation cell.
3. a data transmission method for uplink, is characterized in that, comprising:
Each cooperation cell of carrying out down collaboration multi-point with the Serving cell belonging to user equipment (UE) receives the data that described Serving cell sends; And
Described data are processed; And
Data after described UE transmission processing;
Described method also comprises: described in carry out down collaboration multi-point each cooperation cell receive Cooperation controlling information; Wherein, Cooperation controlling information comprises: scrambling instruction information, Modulation and Coding Scheme indication information, DM-RS sequence indication, precoding indication information and Resource Allocation Formula indication information; Precoding indication information is different for different cooperation cell;
Wherein, described data are processed, specifically comprises: chnnel coding is carried out to described data, obtain the data after encoding; Scrambling is carried out to the data after coding, obtains the data after scrambling; Data after scrambling are modulated, obtains the data after modulating; Generate demodulated reference signal DM-RS sequence; Precoding is carried out to the data after modulation and described DM-RS sequence, obtains the DM-RS sequence after the data after precoding and precoding.
4. method as claimed in claim 3, is characterized in that, when receiving the data of described Serving cell transmission in each cooperation cell, also comprises:
Receive the wireless network temporary identifier RNTI of the described UE that described Serving cell sends;
Scrambling is carried out to the data after coding, obtains the data after scrambling, specifically comprise:
According to the physical identification PCI of described Serving cell, resource time-domain position information, the RNTI of described UE and the q value information of corresponding code word 0 or 1, generate scramble sequence;
Use described scramble sequence to carry out scrambling to the data after coding, obtain the data after scrambling.
5. method as claimed in claim 3, is characterized in that, process, specifically comprise described data:
Described data are modulated, obtains the data after modulating;
Generate DM-RS sequence;
Precoding is carried out to the data after modulation and described DM-RS sequence, obtains the DM-RS sequence after the data after precoding and precoding.
6. the method as described in as arbitrary in claim 3-5, it is characterized in that, the data after described UE transmission processing, specifically comprise:
Physical resource mapping is carried out to the data after precoding and the DM-RS sequence after precoding;
The physical resource mapped is used to send the data after precoding and the DM-RS sequence after precoding to UE.
7. the data sharing device in Serving cell, is characterized in that, comprising:
Determining unit, for determining the data needing to carry out down collaboration multi-point of this Serving cell administration user equipment (UE);
First transmitting element, for being transferred to each cooperation cell of described Serving cell by the data determined;
Described first transmitting element, also for determining the Cooperation controlling information for processing data and sending before sending data to UE; Cooperation controlling information is sent to each cooperation cell of data being carried out to down collaboration multi-point; Wherein, Cooperation controlling information comprises: scrambling instruction information, Modulation and Coding Scheme indication information, DM-RS sequence indication, precoding indication information and Resource Allocation Formula indication information; Precoding indication information is different for different cooperation cell;
Described device also comprises: the first processing unit for determine this Serving cell administration UE need to carry out the data of down collaboration multi-point after, chnnel coding is carried out to described data, obtain encode after data; Scrambling is carried out to the data after coding, obtains the data after scrambling; And trigger each cooperation cell that the data after scrambling are transferred to described Serving cell by described first transmitting element.
8. device as claimed in claim 7, is characterized in that, described first transmitting element, also for the wireless network temporary identifier RNTI of described UE is transferred to described each cooperation cell.
9. the data sending device in cooperation cell, is characterized in that, comprising:
Receiving element, the data that the Serving cell for receiving belonging to user equipment (UE) sends;
Second processing unit, for processing described data;
Second transmitting element, for the data after described UE transmission processing;
Described receiving element is also for receiving Cooperation controlling information; Wherein, Cooperation controlling information comprises: scrambling instruction information, Modulation and Coding Scheme indication information, DM-RS sequence indication, precoding indication information and Resource Allocation Formula indication information; Precoding indication information is different for different cooperation cell;
Described second processing unit, specifically for: chnnel coding is carried out to described data, obtains the data after encoding; Scrambling is carried out to the data after coding, obtains the data after scrambling; Data after scrambling are modulated, obtains the data after modulating; Generate demodulated reference signal DM-RS sequence; Precoding is carried out to the data after modulation and described DM-RS sequence, obtains the DM-RS sequence after the data after precoding and precoding.
10. device as claimed in claim 9, is characterized in that, described receiving element, also for receiving the wireless network temporary identifier RNTI of the described UE that described Serving cell sends;
Described second processing unit, specifically for the RNTI of the physical identification PCI according to described Serving cell, resource time-domain position information, described UE and the q value information of corresponding code word 0 or 1, generates scramble sequence; And use described scramble sequence to carry out scrambling to the data after coding, obtain the data after scrambling.
11. devices as claimed in claim 9, is characterized in that, described second processing unit, specifically for modulating described data, obtain the data after modulating; And generate DM-RS sequence; And precoding is carried out to the data after modulation and described DM-RS sequence, obtain the DM-RS sequence after the data after precoding and precoding.
12. as arbitrary in claim 9-11 as described in device, it is characterized in that, described second transmitting element, specifically for carrying out physical resource mapping to the data after precoding and the DM-RS sequence after precoding; And use the physical resource mapped to send the data after precoding and the DM-RS sequence after precoding to UE.
13. 1 kinds of data Transmission systems, is characterized in that, comprising: the data sharing device in Serving cell and carry out the data sending device in each cooperation cell of down collaboration multi-point with described Serving cell, wherein:
Described data sharing device, for determining the data needing to carry out down collaboration multi-point of its administration user equipment (UE); And the described data sending device data determined are transferred in described each cooperation cell;
Described data sharing device, also for determining the Cooperation controlling information for processing data and sending before sending data to UE; Cooperation controlling information is sent to each cooperation cell of data being carried out to down collaboration multi-point; Wherein, Cooperation controlling information comprises: scrambling instruction information, Modulation and Coding Scheme indication information, DM-RS sequence indication, precoding indication information and Resource Allocation Formula indication information; Precoding indication information is different for different cooperation cell; And determine this Serving cell administration UE need to carry out the data of down collaboration multi-point after, chnnel coding is carried out to described data, obtain encode after data; Scrambling is carried out to the data after coding, obtains the data after scrambling; And trigger each cooperation cell that the data after scrambling are transferred to described Serving cell by the first transmitting element
Described data sending device, for receiving the data that described data sharing device sends; And described data are processed; And to the data after described UE transmission processing;
Described data sending device, also for receiving Cooperation controlling information; Wherein, Cooperation controlling information comprises: scrambling instruction information, Modulation and Coding Scheme indication information, DM-RS sequence indication, precoding indication information and Resource Allocation Formula indication information; Precoding indication information is different for different cooperation cell; And chnnel coding is carried out to described data, obtain the data after encoding; Scrambling is carried out to the data after coding, obtains the data after scrambling; Data after scrambling are modulated, obtains the data after modulating; Generate demodulated reference signal DM-RS sequence; Precoding is carried out to the data after modulation and described DM-RS sequence, obtains the DM-RS sequence after the data after precoding and precoding.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110036957.8A CN102638851B (en) | 2011-02-12 | 2011-02-12 | A kind of data sharing and sending method, Apparatus and system |
| PCT/CN2012/071008 WO2012106993A1 (en) | 2011-02-12 | 2012-02-10 | Method, device, and system for sharing and transmitting data |
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| CN201110036957.8A CN102638851B (en) | 2011-02-12 | 2011-02-12 | A kind of data sharing and sending method, Apparatus and system |
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| WO2010068011A2 (en) * | 2008-12-08 | 2010-06-17 | Lg Electronics Inc. | Method of transmitting and receiving physical downlink shared channel in wireless communication system |
| CN101754230B (en) * | 2008-12-17 | 2012-09-05 | 华为技术有限公司 | Carrier polymerizing method in FDD system and device thereof |
| CN101777940B (en) * | 2009-01-12 | 2013-08-14 | 华为技术有限公司 | Method, device and system for transmitting uplink information |
| CN101932091B (en) * | 2009-06-22 | 2016-04-27 | 中国移动通信集团公司 | Cooperative multicast system, method and relevant apparatus |
| CN101938300B (en) * | 2009-06-30 | 2015-07-22 | 中兴通讯股份有限公司 | Multi-point coordination-based data transmission method and device |
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