CN102045766A - Method and system for scheduling uplink dual-data stream transmission - Google Patents
Method and system for scheduling uplink dual-data stream transmission Download PDFInfo
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Abstract
The invention provides a method and system for scheduling uplink dual-data stream transmission. In an LTE-A (Long Term Evolution-Advanced) system, a base station sets a downlink control information format used for scheduling uplink dual-data stream transmission and issues the downlink control information format to a RN (Relay Node) or UE (User Equipment) to ensure that the RN or the UE of a version 9/10 transmits uplink dual data streams according to the received downlink control information format.
Description
Technical field
The present invention relates to senior Long Term Evolution (LTE-A, Long term Evolution Advanced) technology, especially the method and system that refer to dispatching of relays node (RN, Relay Node) in a kind of LTE-A system or the up dual data stream transmission of user terminal (UE, User Equipment).
Background technology
LTE-A and senior international mobile communication technology (IMT-Advanced, International Mobile Telecommunication Advanced) senior international mobile communication system such as, all be with OFDM (OFDM, Orthogonal Frequency Division Multiplexing) technology be the basis.Long Term Evolution (LTE, Long term Evolution) the downlink transfer scheme of system is based on traditional OFDM technology, and on the time domain of OFDM symbol, add Cyclic Prefix (CP, cyclic prefix) to reduce the interference between the symbol, thereby support the transmission of descending double-current data, be that the base station can send 2 data blocks (TB, Transport Block) simultaneously in 1 subframe.But in the LTE system, the uplink scheme is with the frequency division multiple access (FDMA of single carrier, Frequency Division Multiplexing Access) technology is the basis, can only support the transmission of up single current data, that is to say that UE can send 1 data block simultaneously in 1 subframe.
Downlink Control Information (DCI among the LTE, Downlink Control Information) is used to dispatch the professional transmission of uplink and downlink of UE, and insert the relevant information of (RA, Random access) response with system message (SI, System Information)/paging (Paging)/at random.At different transmission modes, some kinds of different descending control information formats (DCI format) have been defined in the LTE system, every kind of form is except comprising some essential informations, such as modulation scheme (MCS, Modulation and Coding Scheme), resource allocation (RA, Resource Assignment) etc. outside, also comprise the peculiar separately information of every kind of form, such as, DCI format 1/1A/1B/1C/1D represents to be used for the transmission of dispatching downlink single data stream; DCIformat 2/2A represents to be used for the transmission of dispatching downlink dual data stream, and DCI format 0 expression is used for the dispatching uplink transmission.Wherein, the particular content that is used for the DCI format 0 of dispatching uplink transmission in the LTE system comprises:
Be used to distinguish the flag bit (flag) of format 0 and format 1A: 1 bit.Its value is 0 to be expressed as format 0, and value is 1 to be expressed as format 1A;
Frequency hopping sign (Hopping flag): 1 bit.Its value be 0 the expression UE Physical Uplink Shared Channel (PUSCH, Physical Uplink Shared Channel) do not need frequency hopping, its value be 1 the expression UE PUSCH need frequency hopping;
Resource allocation and frequency-hopping resource distribute:
Bit, wherein,
Be the total number of the up RB under certain bandwidth,
Be the operator that rounds up;
Modulation scheme (MCS) and version redundancy (RV, redundancy version): 5 bits;
New data indication (NDI, New Data Indicator): 1 bit;
The transmission power control command (TPC, Transmit Power Control) of scheduling PUSCH: 2 bits;
The cyclic shift of demodulation reference mark (DMRS, Demodulation reference signal): 3 bits;
Up call number (UL index): 2 bits, have only the configuration 0 of tdd mode that this information is just arranged;
Downstream arrangements call number (DAI, Downlink Assignment Index): 2 bits, have only the configuration 1～6 of tdd mode that this information is just arranged;
Channel quality indication (CQI, Channel Quality Indicator) request: 1 bit.
Following radio communication or cellular system require to increase coverage, support the higher rate transmission, and this has proposed new challenge to wireless communication technology; Simultaneously, the cost issues of system building and maintenance is more outstanding.Along with the increase of transmission rate and communication distance, it is outstanding that the energy consumption issues of battery also becomes, and following radio communication will adopt higher frequency, and the pathloss attenuation that causes thus will be more serious.In order to increase the coverage of high data rate, group mobility, casual network deployment, improve the throughput of cell edge, and provide service for the user in the covering leak of cellular system, introduced relaying (Relay) technology in the wireless communication system, therefore, relaying technique is regarded as the key technology of 4G.
Fig. 1 is the schematic diagram of the LTE-A system of introducing RN, as shown in Figure 1, in having introduced the LTE-A system of RN, the link between base station and the RN is called back haul link (Backhaul Link is also referred to as repeated link) and is divided into two kinds of up backhaul link and descending backhaul link; Link between RN and its subordinate's the UE is called access link (Access Link), is divided into two kinds of up access link and descending access link.
At present, LTE-A supports the spatial reuse of uplink single user, that is to say that the user can send 2 transmission blocks in 1 subframe simultaneously when carrying out uplink, promptly up dual data stream transmission.Therefore, also just can not get rid of RN also supports up dual data stream transmission when carrying out uplink possibility, yet, also be not provided for the implementation that the dispatching uplink dual data stream is transmitted at present.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method of dispatching uplink dual data stream transmission, can realize the scheduling to the up dual data stream transmission in the LTE-A system.
Another object of the present invention is to provide a kind of dispatching uplink dual data stream system for transmitting, can realize scheduling the up dual data stream transmission in the LTE-A system.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of method of dispatching uplink dual data stream transmission comprises:
Via node or user terminal receive the descending control information format that is used for the transmission of dispatching uplink dual data stream, and according to the descending control information format that receives, carry out up dual data stream transmission.
Described user terminal is the user terminal of the version 9/10 in the senior Long Term Evolution LTE-A system.
Described descending control information format includes: the frequency hopping sign, resource allocation and frequency-hopping resource distribute, the cyclic shift of demodulation reference mark DMRS, up call number, downstream arrangements call number DAI, the channel quality indicator (CQI) request, modulation scheme MCS, new data indication NDI and the redundant RV of version, through-put power control TPC, HARQ process number, transmission block is to the mark of code stream conversion, the information relevant with up precoding.
The value of the cyclic shift of described DMRS is: each described via node or 1 DMRS of user terminal configuration, and 2 PHICH call numbers;
Perhaps, to dual data stream configuration DMRS separately, obtain 2 PHICH call numbers respectively according to these two DMRS.
The required bit number average of described up call number is relevant with the configuration of up-downgoing backhaul subframe, and has the information of described up call number during more than descending backhaul subframe when the number of up backhaul backhaul subframe;
The required bit number average of described DAI is relevant with the configuration of up-downgoing backhaul subframe, and has the information of described DAI during more than descending backhaul subframe when the number of up backhaul backhaul subframe.
Under layer switch mode, described two data flow send identical described CQI request; Under non-layer switch mode, described two data flow send different CQI requests.
Under layer switch mode, described two data flow adopt identical MCS.
The bit number of described HARQ process number equals HARQ process number;
The number that described HARQ process number equals the up backhaul subframe of configuration between uplink for the first time and the re-transmission first time adds one.
A kind of dispatching uplink dual data stream system for transmitting comprises the base station, via node and user terminal, wherein,
The base station is used to be provided for the descending control information format of dispatching uplink dual data stream transmission, and is handed down to via node or user terminal.
Via node or user terminal are used for according to the descending control information format that receives, and carry out up dual data stream transmission.
Described user terminal is the user terminal of the version 9/10 in the senior Long Term Evolution LTE-A system.
The technical scheme that provides from the invention described above as can be seen, in the LTE-A system, because the base station is provided for the descending control information format of dispatching uplink dual data stream transmission, and be handed down to RN or UE, make the UE of RN or version 9/10, by according to the descending control information format that receives, realized transmission to up dual data stream.
Description of drawings
Fig. 1 is the schematic diagram of the LTE-A system of introducing RN;
Fig. 2 is the flow chart of the method for dispatching uplink dual data stream transmission of the present invention;
Fig. 3 is under the FDD mode, the schematic diagram of first embodiment of the allocation plan of up-downgoing backhaul subframe;
Fig. 4 is under the FDD mode, the schematic diagram of second embodiment of the allocation plan of up-downgoing backhaul subframe;
Fig. 5 is under the FDD mode, determines the schematic diagram of first embodiment of HARQ process number;
Fig. 6 is under the FDD mode, determines the schematic diagram of second embodiment of HARQ process number;
Fig. 7 is under the FDD mode, determines the schematic diagram of the 3rd embodiment of HARQ process number;
Fig. 8 is under the TDD mode, the schematic diagram of first embodiment of the allocation plan of up-downgoing backhaul subframe;
Fig. 9 is under the TDD mode, the schematic diagram of second embodiment of the allocation plan of up-downgoing backhaul subframe.
Embodiment
Fig. 2 is the flow chart of the method for dispatching uplink dual data stream transmission of the present invention, as shown in Figure 2, comprising:
Step 200: via node or user terminal receive the descending control information format that is used for the transmission of dispatching uplink dual data stream.
In the LTE-A system, newly-increased descending control information format is used for the transmission of RN or UE dispatching uplink dual data stream, and UE is meant the UE of the version 9/10 (Rel-9/10) in the LTE-A system here.After being set by the base station, newly-increased descending control information format sends to RN or UE.
In this step, the newly-increased DCI format particular content that is used for the transmission of dispatching uplink dual data stream comprises:
Frequency hopping sign (Hopping flag): 1 bit.Be used for expression and whether carry out the frequency modulation operation, its value is that the frequency hopping operation is not carried out in 0 expression; Its value is that the frequency hopping operation is carried out in 1 expression.Especially, for LTE-ARel-9/10UE, has this frequency hopping sign; For RN, not this frequency hopping sign can be arranged also;
Resource allocation and frequency-hopping resource distribute: to RN or LTE-A Rel-9/10UE, uplink can be continuous resource distribution mode, also can be discontinuous resource distribution mode;
The cyclic shift of DMRS: 3 bits.1) do not change DMRS, promptly adopt the mode identical to be configured with DCI format 0 in the existing LTE system, just only dispose 1 DMRS for dual data stream, but dispose 2 times physical mixed ARQ indicating channel (PHICH, Physical Nybrid ARQ Indicator Channel) number.2) adopt existing configuration mode respectively to dual data stream configuration DMRS separately, promptly dispose 2 DMRS altogether;
UL index:2 bit or 3 bits.Concrete required bit number is relevant with the configuration of up-downgoing backhaul subframe, and has only the information that just has this UL index when the number of up backhaul subframe during more than descending backhaul subframe;
DAI: concrete required bit number is relevant with the configuration of up-downgoing backhaul subframe, and has only when the number of descending backhaul subframe and just have this DAI information during more than up backhaul subframe;
CQI request: 1 bit.Be used to trigger RN or LTE-A Rel-9/10UE sends aperiodic CQI.Wherein, two data flow send identical CQI under layer exchange (layer shift) pattern; Two data flow send different CQI under non-layer switch mode;
MCS, NDI and RV:, beyond NDI and the RV, also need MCS, NDI and the RV of the 2nd data flow except the MCS of the 1st data flow.Wherein, because the channel quality of backhaul link is better, therefore can suitably reduce the kind of MCS.In addition, under layer shift pattern, two data flow adopt identical MCS;
Through-put power control (TPC): two data flow of the up emission of RN, can adopt different power, therefore, need indicate the TPC of each data flow respectively;
HARQ process number:, therefore, in DCI format 0, need not to indicate the process number of data flow because the uplink retransmission of LTE is synchronous and non-self-adapting.But concerning there was the LTE-A system of RN in the present invention, uplink retransmission can be asynchronous and adaptive, therefore need indicate concrete HARQ process number, and wherein, it is relevant with the allocation plan of up-downgoing backhaul subframe to dispose several processes;
Transmission block is changed the mark of (codeword swap) to code stream: 1 bit.Be used to indicate 2 data blocks that send simultaneously in 1 subframe are which code stream TB1 and TB2 are mapped to respectively.Its value is that 0 expression TB1 is mapped on the codeword 0, and TB2 is mapped on the codeword 1; Its value is that 1 expression TB1 is mapped on the codeword 1, and TB2 is mapped on the codeword 0;
The information relevant with up precoding: its bit number is relevant with the antenna port number, and 2 antenna ports need 2 bits, and 4 antenna ports need 4 bits, can not surpass 5 bits at most.Need how many code books also not determine about up precoding at present, but should be unable to be above 32 kinds.
Step 201: via node or user terminal are according to the descending control information format that receives, and the dispatching uplink dual data stream is transmitted.
RN or UE are the composition of the parameter of knowing that descending control information format comprises and structure, and the transmission that RN or UE only need to finish up dual data stream according to the specified mode of descending control information format gets final product.
Method at dispatching uplink dual data stream transmission of the present invention also provides a kind of dispatching uplink dual data stream system for transmitting, and it forms structure as shown in Figure 1, comprises the base station, RN and UE, wherein,
The base station is used to be provided for the descending control information format of dispatching uplink dual data stream transmission, and is handed down to RN or UE.
RN or UE are used for according to the descending control information format that receives, and carry out up dual data stream transmission.
Described UE is LTE-A Rel-9/10UE.
Below in conjunction with embodiment, the method to set up of descending control information format of the present invention is described in detail.
In the FDD mode is example.
Supposing the system bandwidth 20MHz, promptly
The DCI format that is used for up dual data stream transmission under FDD and the non-layer shift pattern comprises following information:
1) frequency hopping sign: 1 bit, the frequency hopping operation is not carried out in " 0 " representative; The frequency hopping operation is carried out in " 1 " representative.To RN, can keep the information of this 1 bit; To LTE-A Rel-9/10UE, need the information of this 1 bit.
2) resource allocation and frequency-hopping resource distribute.
If adopt continuous resource distribution mode, then be:
Bit;
If adopt discrete resource distribution mode: then be
Bit, wherein the value of P is as shown in table 1.
Table 1
3) cyclic shift of DMRS, 3 bits.Be 1 DMRS of each RN configuration in the present embodiment, and 2 PHICH call numbers.About the PHICH call number obtain belong to those skilled in the art's conventional techniques means, repeat no more here.
4) UL index, 2 bits, concrete required bit number is relevant with the configuration of up-downgoing backhaul subframe, and has only when the number of up backhaul subframe this information is just arranged during more than descending backhaul subframe.
Fig. 3 is under the FDD mode, the schematic diagram of first embodiment of the allocation plan of up-downgoing backhaul subframe, among Fig. 3, grid is represented subframe, arrow indication grid is represented descending backhaul subframe downwards, represents up backhaul subframe to upward arrow indication grid, as shown in Figure 3, suppose that subframe# 2 is configured to down link backhaul subframe (DL backhaul subframe), subframe# 6 and subframe# 7 are configured to up link backhaul subframe (UL backhaul subframe).DL backhaul subframe# 2 can dispatch 2 different UL backhaul subframe# 6 and UL backhaul subframe# 7 simultaneously, at this moment, need the UL index of 2 bits to indicate up backhaul and be transmitted on which UL backhaul subframe, the required bit number of promptly up call number is the number of the descending backhaul subframe different up backhaul subframe of dispatching simultaneously.Particularly, can be set to when UL index value is 10 expression scheduling UL backhaul subframe# 6; When UL index value is 01, expression scheduling UL backhaul subframe# 7; When UL index value was 11, UL backhaul subframe# 6 and UL backhaul subframe# 7 were dispatched in expression simultaneously.
5) DAI, concrete required bit number is relevant with the configuration of up-downgoing backhaul subframe, and has only when the number of descending backhaul subframe this information is just arranged during more than up backhaul subframe.
Fig. 4 is under the FDD mode, the schematic diagram of second embodiment of the allocation plan of up-downgoing backhaul subframe, among Fig. 4, grid is represented subframe, arrow indication grid is represented descending backhaul subframe downwards, represents up backhaul subframe to upward arrow indication grid, as shown in Figure 4, suppose that subframe# 2 and subframe# 3 are configured to DL backhaul subframe, subframe# 7 is configured to UL backhaul subframe.So, on UL backhaul subframe# 7, will send and DL backhaul subframe# 2 or the corresponding ACK/NACK of DL backhaul subframe# 3, that need this moment the DAI of 2 bits to indicate to send UL backhaul subframe on is the ACK/NACK of which DL backhaul subframe of correspondence, and promptly the required bit number of DAI is the number of the descending backhaul subframe different up backhaul subframe of dispatching simultaneously.Particularly, can be set to when the DAI value is 10, expression sends the ACK/NACK of DL backhaul subframe# 2 correspondence; When the DAI value is 01, the ACK/NACK of expression scheduling DL backhaul subframe# 3 correspondence, when the DAI value is 11, the ACK/NACK of expression scheduling DL backhaul subframe# 2 and DL backhaul subframe# 3 correspondence.
6) CQI request, 1 bit.It is that 0 expression RN or LTE-A Rel-9/10UE need not to send CQI that its value can be set, and its value is that 1 expression RN or LTE-A Rel-9/10UE need send out CQI.
7) HARQ process number, this parameter is relevant with the backhaul sub-frame configuration, and particularly, HARQ process number equals the number of the up backhaul subframe of configuration between the 1st uplink and the 1st re-transmission.
Fig. 5 is under the FDD mode, determine the schematic diagram of first embodiment of HARQ process number, among Fig. 5, grid is represented subframe, arrow indication grid is represented descending backhaul subframe downwards, represent up backhaul subframe to upward arrow indication grid, the configuration cycle of DL backhaul subframe is 10ms, comprises 10 subframes (numbering from 0 to 9) in the radio frames.Suppose 1 DL backhaul subframe of configuration and 1 UL backhaul subframe in 1 radio frames, as shown in Figure 5, subframe# 2 is configured to DL backhaul subframe, and subframe# 6 is configured to UL backhaul subframe.At this moment, the 1st uplink is at subframe# 6, and it retransmits on the subframe# 6 of next radio frames, and does not have collocating uplink backhaul subframe between them, therefore, has only 1 ascending HARQ course, need not to indicate the HARQ process number.
Fig. 6 is under the FDD mode, determine the schematic diagram of second embodiment of HARQ process number, among Fig. 6, grid is represented subframe, arrow indication grid is represented descending backhaul subframe downwards, represent up backhaul subframe to upward arrow indication grid, the configuration cycle of DL backhaul subframe is 10ms, suppose 2 DLbackhaul subframes of configuration and 2 UL backhaul subframes, as shown in Figure 6, subframe# 2 and subframe# 3 are configured to DL backhaul subframe, and subframe# 6 and subframe# 7 are configured to UL backhaul subframe.At this moment, the 1st uplink is at subframe# 6, and it retransmits on the subframe# 6 of next radio frames, and has disposed 1 up backhaul subframe between them, therefore, 2 ascending HARQ courses is arranged, and adopts 1 bit to indicate the HARQ process number.Draw easily: if between the 1st up backhaul transmission and the 1st up backhaul re-transmission, disposed 2 up backhaul subframes, so, 3 ascending HARQ courses are arranged, adopt 2 bits to indicate the HARQ process number.
Fig. 7 is under the FDD mode, determine the schematic diagram of second embodiment of HARQ process number, among Fig. 7, grid is represented subframe, and arrow indication grid is represented descending backhaul subframe downwards, represents up backhaul subframe to upward arrow indication grid, the configuration cycle of DL backhaul subframe is 40ms, as shown in Figure 7, find out easily and have only 1 ascending HARQ course, need not to indicate the HARQ process number successively.
8) transmission block is to the mark of code stream conversion (codeword swap), 1 bit.Be used to indicate TB1 and TB2 to be mapped to which code stream respectively.Its value is that 0 expression TB1 is mapped on the codeword 0, and TB2 is mapped on the codeword 1; Its value is that 1 expression TB1 is mapped on the codeword 1, and TB2 is mapped on the codeword 0.
9) for TB1, MCS is 5 bits, and NDI is 1 bit, and RV is 2 bits, and TPC is 2 bits.For TB2, MCS is 5 bits, and NDI is 1 bit, and RV is 2 bits, and TPC is 2 bits.Wherein, concerning RN,, therefore can suitably reduce the kind of MCS, for example, indicate 16 kinds of higher MCS etc. with 4 bits because the channel quality of backhaul link is fine.
10) the relevant information of precoding: bit number is relevant with the antenna port number, and 2 antenna ports need 2 bits, and 4 antenna ports need 4 bits, can not surpass 5 bits at most.
In the TDD mode is example.
Supposing the system bandwidth 20MHz, promptly
The DCI format that is used for up dual data stream transmission under TDD and the layer shift pattern comprises following information:
1) frequency hopping sign: 1 bit, the frequency hopping operation is not carried out in " 0 " representative; The frequency hopping operation is carried out in " 1 " representative.To RN, can keep the information of this 1 bit; To LTE-A Rel-9/10UE, need the information of this 1 bit.Resource allocation and frequency-hopping resource distribute:
2) resource allocation and frequency-hopping resource distribute.
If adopt continuous resource distribution mode, then be:
If adopt discrete resource distribution mode: then be
Bit, wherein the value of P is as shown in table 1.
3) cyclic shift of DMRS, 3 bits.Be to 2 DMRS of dual data stream configuration, so that obtain 2 PHICH call numbers in the present embodiment according to these two DMRS.About the PHICH call number obtain belong to those skilled in the art's conventional techniques means, repeat no more here.
4) UL index, 3 bits.Concrete required bit number is relevant with the configuration of up-downgoing backhaul subframe, and has only when the number of up backhaul subframe this information is just arranged during more than descending backhaul subframe.
Table 2 is 6 kinds of subframe allocation plans under the tdd mode, and wherein U represents sub-frame of uplink, and D represents descending sub frame.
Table 2
With TDD uplink-downlink configuration 1 is example, and Fig. 8 is under the TDD mode, the schematic diagram of first embodiment of the allocation plan of up-downgoing backhaul subframe, among Fig. 8, grid is represented subframe, and arrow indication grid is represented descending backhaul subframe downwards, represents up backhaul subframe to upward arrow indication grid.As shown in Figure 8, suppose that DL backhaul subframe# 4 can dispatch 3 different UL backhaul subframe thereafter, i.e. subframe# 2 and subframe# 3 in subframe# 8 in this radio frames and the next radio frames simultaneously; Similarly, DL backhaul subframe# 9 can dispatch thereafter 3 different UL backhaul subframe, the i.e. subframe# 3 of next radio frames, subframe# 7 and subframe# 8 simultaneously.
At this moment, the concrete connotation of UL index of 3 bits can be set in the uplink scheduling authorization of DL backhaul subframe#4: the UL backhaul subframe# 8 of 100 these radio frames of expression scheduling; The UL backhaul subframe# 8 of this radio frames and the UL backhaul subframe# 2 of next radio frames have been dispatched in 110 expressions; The UL backhaul subframe# 2 of 010 next radio frames of expression scheduling; ... the rest may be inferred.Wherein, 1 expression subframe is scheduled, and 0 expression subframe is not scheduled.
5) DAI, concrete required bit number is relevant with the configuration of up-downgoing backhaul subframe, and has only when the number of descending backhaul subframe this information is just arranged during more than up backhaul subframe.
Fig. 9 is under the TDD mode, the schematic diagram of second embodiment of the allocation plan of up-downgoing backhaul subframe, and among Fig. 9, grid is represented subframe, arrow indication grid is represented descending backhaul subframe downwards, represents up backhaul subframe to upward arrow indication grid.As shown in Figure 9, suppose to send simultaneously on the UL backhaul subframe# 2 of the 2nd radio frames DL backhaul subframe# 3 and the corresponding ACK/NACK of DLbackhaul subframe# 4 with the 1st radio frames, that at this moment, need the DAI of 2 bits to indicate to send ULbackhaul subframe# 2 on is the ACK/NACK of which DL backhaul subframe of correspondence.Particularly, can be set to when the DAI value is 10, expression sends the ACK/NACK of DL backhaul subframe# 3 correspondence, when the DAI value is 01, the ACK/NACK of expression scheduling DL backhaul subframe# 4 correspondence, when the DAI value is 11, the ACK/NACK of expression scheduling DL backhaul subframe# 3 and DL backhaul subframe# 4 correspondence.On the UL backhaul subframe# 7 of the 3rd radio frames similar situation is arranged also, no longer describe in detail here.
6) CQI request, 1 bit.It is that 0 expression RN or LTE-A Rel-9/10UE need not to send CQI that its value can be set, and its value is that 1 expression RN or LTE-A Rel-9/10UE need send out CQI.In the present embodiment, owing to be the pattern of layer shift, therefore, two data flow send identical CQI.
7) HARQ process number, this parameter is relevant with the backhaul sub-frame configuration, and obtaining value method is identical with embodiment under the FDD mode, repeats no more here.
8) transmission block is to the mark of code stream conversion (codeword swap), 1 bit.Be used to indicate TB1 and TB2 to be mapped to which code stream respectively.Obtaining value method is identical with embodiment under the FDD mode, repeats no more here.
9) for TB1, MCS is 5 bits, and NDI is 1 bit, and RV is 2 bits, and TPC is 2 bits.For TB2, MCS is 5 bits, and NDI is 1 bit, and RV is 2 bits, and TPC is 2 bits.Wherein, concerning RN,, therefore can suitably reduce the kind of MCS, for example, indicate 16 kinds of higher MCS etc. with 4 bits because the channel quality of backhaul link is fine.In the present embodiment, owing to be the pattern of layer shift, therefore the MCS of two data flow is identical.
10) the relevant information of precoding: bit number is relevant with the antenna port number, and 2 antenna ports need 2 bits, and 4 antenna ports need 4 bits, can not surpass 5 bits at most.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the method for a dispatching uplink dual data stream transmission is characterized in that, comprising:
Via node or user terminal receive the descending control information format that is used for the transmission of dispatching uplink dual data stream, and according to the descending control information format that receives, carry out up dual data stream transmission.
2. method according to claim 1 is characterized in that, described user terminal is the user terminal of the version 9/10 in the senior Long Term Evolution LTE-A system.
3. method according to claim 2 is characterized in that, described descending control information format includes: the frequency hopping sign, resource allocation and frequency-hopping resource distribute, the cyclic shift of demodulation reference mark DMRS, up call number, downstream arrangements call number DAI, the channel quality indicator (CQI) request, modulation scheme MCS, new data indication NDI and the redundant RV of version, through-put power control TPC, HARQ process number, transmission block is to the mark of code stream conversion, the information relevant with up precoding.
4. method according to claim 3 is characterized in that, the value of the cyclic shift of described DMRS is: each described via node or 1 DMRS of user terminal configuration, and 2 PHICH call numbers;
Perhaps, to dual data stream configuration DMRS separately, obtain 2 PHICH call numbers respectively according to these two DMRS.
5. method according to claim 3, it is characterized in that, the required bit number average of described up call number is relevant with the configuration of up-downgoing backhaul subframe, and has the information of described up call number during more than descending backhaul subframe when the number of up backhaul backhaul subframe;
The required bit number average of described DAI is relevant with the configuration of up-downgoing backhaul subframe, and has the information of described DAI during more than descending backhaul subframe when the number of up backhaul backhaul subframe.
6. method according to claim 3 is characterized in that, under layer switch mode, described two data flow send identical described CQI request; Under non-layer switch mode, described two data flow send different CQI requests.
7. method according to claim 3 is characterized in that, under layer switch mode, described two data flow adopt identical MCS.
8. method according to claim 3 is characterized in that, the bit number of described HARQ process number equals HARQ process number;
The number that described HARQ process number equals the up backhaul subframe of configuration between uplink for the first time and the re-transmission first time adds one.
9. a dispatching uplink dual data stream system for transmitting is characterized in that, comprises the base station, via node and user terminal, wherein,
The base station is used to be provided for the descending control information format of dispatching uplink dual data stream transmission, and is handed down to via node or user terminal.
Via node or user terminal are used for according to the descending control information format that receives, and carry out up dual data stream transmission.
10. system according to claim 9 is characterized in that, described user terminal is the user terminal of the version 9/10 in the senior Long Term Evolution LTE-A system.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101779820A CN102045766A (en) | 2009-10-23 | 2009-10-23 | Method and system for scheduling uplink dual-data stream transmission |
| PCT/CN2010/074020 WO2010145549A1 (en) | 2009-10-23 | 2010-06-17 | Method and system for scheduling uplink double data flow transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN103391618A (en) * | 2012-05-09 | 2013-11-13 | 中兴通讯股份有限公司 | Subframe configuration method and device |
| CN105144817A (en) * | 2013-03-28 | 2015-12-09 | 夏普株式会社 | Systems and methods for demodulation reference signal selection |
| CN105634707A (en) * | 2015-12-31 | 2016-06-01 | 深圳市金立通信设备有限公司 | Information transmission method, base station and terminal |
| CN108512632A (en) * | 2017-02-28 | 2018-09-07 | 华为技术有限公司 | Data processing method and device |
| WO2020029307A1 (en) * | 2018-08-10 | 2020-02-13 | 华为技术有限公司 | Data transmission method and communication device |
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| CN101272364A (en) * | 2008-05-05 | 2008-09-24 | 中兴通讯股份有限公司 | Precoding indication method and device and control method based on MU-MIMO |
| CN101499894A (en) * | 2008-02-01 | 2009-08-05 | 大唐移动通信设备有限公司 | Uplink scheduling method in time division duplex system |
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| CN101499894A (en) * | 2008-02-01 | 2009-08-05 | 大唐移动通信设备有限公司 | Uplink scheduling method in time division duplex system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103391618A (en) * | 2012-05-09 | 2013-11-13 | 中兴通讯股份有限公司 | Subframe configuration method and device |
| CN105144817A (en) * | 2013-03-28 | 2015-12-09 | 夏普株式会社 | Systems and methods for demodulation reference signal selection |
| CN105144817B (en) * | 2013-03-28 | 2019-11-08 | 夏普株式会社 | Evolution Node B, user equipment (UE) and its method |
| CN105634707A (en) * | 2015-12-31 | 2016-06-01 | 深圳市金立通信设备有限公司 | Information transmission method, base station and terminal |
| CN105634707B (en) * | 2015-12-31 | 2019-04-23 | 深圳市金立通信设备有限公司 | A kind of method, base station and the terminal of information transmission |
| CN108512632A (en) * | 2017-02-28 | 2018-09-07 | 华为技术有限公司 | Data processing method and device |
| WO2018157756A1 (en) * | 2017-02-28 | 2018-09-07 | 华为技术有限公司 | Data processing method and apparatus |
| CN108512632B (en) * | 2017-02-28 | 2021-06-01 | 华为技术有限公司 | Data processing method and device |
| US11283553B2 (en) | 2017-02-28 | 2022-03-22 | Huawei Technologies Co., Ltd. | Method and apparatus for data processing using hybrid automatic repeat request (HARQ) processes |
| WO2020029307A1 (en) * | 2018-08-10 | 2020-02-13 | 华为技术有限公司 | Data transmission method and communication device |
| US11856582B2 (en) | 2018-08-10 | 2023-12-26 | Huawei Technologies Co., Ltd. | Data transmission method and communications apparatus |
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| WO2010145549A1 (en) | 2010-12-23 |
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