CN102256355B - High speed-physical downlink shared channel (HS-PDSCH) transmission method and device in high speed downlink packet access (HSDPA) - Google Patents
High speed-physical downlink shared channel (HS-PDSCH) transmission method and device in high speed downlink packet access (HSDPA) Download PDFInfo
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Abstract
The invention provides a high speed-physical downlink shared channel (HS-PDSCH) transmission method in high speed downlink packet access (HSDPA). The method comprises the following steps that: when a node B (NODEB) determines to schedule user equipment (UE) at the nth subframe, the NODEB assembles a high speed-downlink shared channel (HS-DSCH) transmission block according to non-rectangular HS-PDSCHs allocated to the UE; the NODEB transmits the HS-DSCH transmission block to the UE at the (n+d+d1)th subframe; after the UE receives the HS-DSCH transmission block at the (n+d+d1)th subframe, acknowledgement (ACK)/negative acknowledgement (NACK) information of the HS-DSCH transmission block is fed back to the NODEB at the (n+d+d1)th subframe through a high speed-shared information channel (HS-SICH); the UE generates channel quality indicators (CQI) of various non-rectangular HS-PDSCHs, and the UE feeds the newly generated CQI back to the NODEB at the (n+d+d1+d2)th subframe through the HS-SICH. The invention also provides an HS-PDSCH transmission system in HSDPA. By the scheme, non-rectangular HS-PDSCH resources can be allocated to the UE, and the downlink peak rate is improved.
Description
Technical field
The present invention relates to the 3G (Third Generation) Moblie technical field, particularly high-speed physical downlink shared channel (HS-PDSCH) (HS-PDSCH) transfer approach and the device in a kind of high-speed downstream bag access (HSDPA).
Background technology
In prior art, on the HSDPA carrier wave, the HSDPA scheduler of base station (NODEB) is once dispatched in each subframe.Scheduler is determined the UE be scheduled in current subframe, and is each UE distribution High-Speed Shared Control Channel (HS-SCCH), high-speed physical downlink shared channel (HS-PDSCH) (HS-PDSCH) and high-speed shared information channel (HS-SICH).HS-SCCH and HS-SICH by the configuration.The High-Speed Shared Control Channel (HS-SCCH) of distributing to UE is that radio network controller (RNC) configuration is to a HS-SCCH in the HS-SCCH set of UE; The HS-SICH that distributes to UE is the HS-SICH matched with the HS-SCCH that distributes to UE; The HS-PDSCH that distributes to UE is a part of resource in the HS-PDSCH resource pool or whole resources, and the shared resource of HS-PDSCH of distributing to UE must be the rectangle resource.So-called rectangle resource refers to, shared each time slot at HS-PDSCH, and the channel code of distributing to HS-PDSCH is continuous and identical.As do not meet above-mentioned condition, be non-rectangle HS-PDSCH resource.
In HSDPA, the resource of channel occupancy can be unique definite with time slot and these two groups of parameters of channel code.If shared each time slot at HS-PDSCH, the channel code of distributing to HS-PDSCH is continuous and identical, take time slot on the channel resource chart that abscissa, channel code are ordinate, the shape that the resource that HS-PDSCH takies forms must be rectangle.
In prior art, HS-PDSCH resource allocation flow as shown in Figure 1, comprises the steps:
Step 101:RNC gives each HSDPA carrier wave configuration some to HS-SCCH and HS-SICH, and notifies NODEB by configuration information.
Step 102:RNC is each HSUPA UE distributing carrier wave, and by the relevant configuration information such as carrier wave at this UE place notice NODEB.NODEB gives this HSUPA UE configuration HS-SCCH set and HS-SICH set.
NODEB selects the HS-SCCH set of several HS-SCCH as UE from the HS-SCCH of the carrier wave at this UE place.Correspondingly, form the HS-SICH set of UE to the HS-SICH of the HS-SCCH pairing in the HS-SCCH set of UE with configuration.
Step 103:NODEB is by the configuration information notice RNC of the HS-SCCH of UE set and HS-SICH set; By RNC, this configuration information is transmitted to UE.If in the HS-SCCH of UE set in the HS-SICH of the number of HS-SCCH and UE set the number of HS-SICH be K
pair, K
pairmaximum be K
pair=4.
Step 104:NODEB carries out a HSDPA scheduling at each subframe n.Determine each UE be scheduled in this subframe.And be each be scheduled UE distribution HS-SCCH, HS-PDSCH and HS-SICH.Concrete scheduling process is as follows:
Step 104-1:NODEB in (n+d) subframe, will distribute to UE HS-PDSCH configuration information and send to UE for the information exchange over-allocation of high speed descending sharing channel (HS-DSCH) the transmission block decoding of the upper carrying of HS-PDSCH to the HS-SCCH of UE.Here, d means the processing delay of the scheduler of NODEB.
Step 104-2: as UE when (n+d) subframe detects NODEB and sends to its HS-SCCH, UE determines according to the configuration information of the HS-PDSCH carried on HS-SCCH the HS-PDSCH that distributes to it, according to the information for the decoding of HS-DSCH transmission block of carrying on HS-SCCH, determines the required parameters of HS-DSCH transmission block decoding.The HS-SICH that UE also will match with the HS-SCCH detected is as the HS-SICH that distributes to it.
Step 104-3:NODEB is according to a HS-DSCH transmission block of HS-PDSCH assembling of distributing to UE.NODEB sends to UE by this transmission block by the HS-PDSCH that distributes to UE in the n+d+d1 subframe.Here, d1=1 means the timing difference between subframe that subframe that HS-SCCH sends and HS-PDSCH send.
Step 104-4:UE will receive the HS-DSCH transmission block that NODEB sends by HS-PDSCH in (n+d+d1) subframe.If UE is correct to this transmission block decoding, UE will generate confirmation (ACK) information; Otherwise, will generate non-confirmation (NACK) information.UE also will generate according to the signal to noise ratio (SNR) of HS-PDSCH channel quality indication (CQI) information of HS-PDSCH.
In (n+d+d1+d2) subframe, the HS-SICH by distributing to it sends to NODEB by the CQI information of the HS-PDSCH of up-to-date generation and the ACK information of HS-DSCH transmission block (to HS-DSCH transmission block correct decoding time) or nack message (to the decoding of HS-DSCH transmission block mistake time) to step 104-5:UE.Here, d2=2 means the timing difference between subframe that subframe that HS-PDSCH sends and HS-SICH send.
Step 104-6:NODEB receives the HS-SICH that distributes to UE in (n+d+d1+d2) subframe.As NODEB, when HS-SICH detects ACK information, NODEB will no longer retransmit this transmission block.When NODEB detects nack message, if the retransmitted number of times of this transmission block does not reach maximum number of retransmissions, NODEB will retransmit this transmission block; Otherwise NODEB will no longer retransmit this transmission block.NODEB extracts CQI information from HS-SICH, and while dispatching afterwards this UE, NODEB will distribute suitable HS-PDSCH resource to UE according to this CQI information.
When the scheduler of NODEB is dispatched continuously to a UE, will use same HS-SCCH.Such as: NODEB dispatches the 1st UE continuously in n subframe and n+1 subframe, it is the 1st HS-SCCH in the HS-SCCH set of UE that NODEB gives the HS-SCCH of the 1st UE in the n sub-frame allocation, NODEB is when the n+1 subframe is dispatched this UE again, and it must be the 1st HS-SCCH that NODEB distributes the HS-SCCH of this UE.
For UE, UE distributes to monitoring in first subframe each HS-SCCH in its HS-SCCH set.When UE listens to 1 HS-SCCH that distributes to it when (this HS-SCCH is called a HS-SCCH) in previous subframe, UE will only be monitored a HS-SCCH in current subframe.As UE, when previous subframe does not listen to the HS-SCCH that distributes to it, UE will monitor each HS-SCCH in the HS-SCCH set of distributing to it in current subframe.Above-mentioned UE shows the snoop procedure of HS-SCCH set: in prior art, UE does not support NODEB, in same subframe, a plurality of HS-SCCH are distributed to described UE.
In the HSDPA system, usually adopt the Typical Disposition of 2: 4 or 3: 3.Under the Typical Disposition of 2: 4, the HS-PDSCH resource pool that RNC distributes to NODEB takies 4.5 time slots usually.Under the Typical Disposition of 3: 3, the HS-PDSCH resource pool that RNC distributes to NODEB takies 3.5 time slots usually.Under the HS-PDSCH of the above-mentioned employing rectangle resource pool method of salary distribution, when UE is scheduled, the HS-PDSCH resource of distributing to UE takies at most 4 time slots (during configuration in 2: 4) or 3 time slots (during configuration in 3: 3), the resource of 4.5 time slots (during configuration in 2: 4) in resource pool or 3.5 time slots (during configuration in 3: 3) all can not be distributed to UE.Like this, have at least the HS-PDSCH resource pool of 0.5 time slot not to be fully utilized.The descending peak rate of UE is merely able to reach 2Mbps or 3 1.5Mbps that time slot can be supported that 4 time slots (during configuration in 2: 4) can be supported, can not reach the 1.75Mbps that 2.2Mbps that 4.5 time slots (2: 4 while configuring) can support or 3.5 time slots (3: 3 while configuring) can be supported.
Summary of the invention
The invention provides HS-PDSCH transfer approach and device in a kind of HSDPA, can realize that the non-rectangle HS-PDSCH that network side distributes correctly sends UE to.
The embodiment of the present invention proposes the high-speed physical downlink shared channel (HS-PDSCH) HS-PDSCH transfer approach in a kind of high-speed downstream bag access HSDPA, comprises the steps:
A, as base station NODEB after the n subframe is determined scheduling UE, NODEB is according to the non-rectangle HS-PDSCH assembling high speed downlink shared channel HS-DSCH transmission block of distributing to user equipment (UE);
After B, NODEB are encoded to described HS-DSCH transmission block and modulate, in the n+d+d1 subframe, to UE, send described HS-DSCH transmission block; D means the scheduling time delay of NODEB; D1=1 means that NODEB sends the subframe of HS-SCCH and sends the timing difference between the subframe of HS-PDSCH;
C, UE, after the n+d+d1 subframe receives described HS-DSCH transmission block, feed back the ACK/NACK information of described HS-DSCH transmission block to NODEB by high-speed shared information channel HS-SICH in the n+d+d1+d2 subframe; D2=2 means that NODEB sends the timing difference between the subframe of the subframe of HS-PDSCH and UE feedback HS-SICH;
D, UE generate the channel quality indicator (CQI) of each non-rectangle HS-PDSCH, and UE feeds back the CQI of described up-to-date generation to NODEB by high-speed shared information channel HS-SICH in the n+d+d1+d2 subframe.
Preferably, described steps A comprises:
The number of symbols that the definite non-rectangle HS-PDSCH that distributes to UE of A1, NODEB can carry;
A2, calculate the information bit number that the non-rectangle HS-PDSCH distribute to UE under definite HS-PDSCH modulation system can carry;
The transport block length L advised in A3, the CQI according to the up-to-date feedback of UE calculates the length Q of the HS-DSCH transmission block that the n+d+d1 sub-frame allocation can carry to the HS-PDSCH of UE;
A4, NODEB are according to the length Q assembling HS-DSCH transmission block of calculated HS-DSCH transmission block;
A5, by the modulation system of the length value Q of the HS-DSCH transmission block of assembling, transmission block, transmission block with distribute to the information bit sum that the HS-PDSCH of UE can carry and send to physical layer.
Preferably, described steps A 1 comprises:
The non-rectangle HS-PDSCH that distributes to UE is divided into to plural rectangle HS-PDSCH;
For each rectangle HS-PDSCH, the timeslot number of each time slot taken according to this rectangle HS-PDSCH, determine the time slot sum N that this rectangle HS-PDSCH takies
tS;
The time slot sum N taken according to this rectangle HS-PDSCH
tSwith the spreading factor SF of this rectangle HS-PDSCH, determine that the channel code number of the SF=16 that this rectangle HS-PDSCH comprises is:
the total number of symbols that this rectangle HS-PDSCH can carry is:
wherein, N
singlCode=44, mean the number of symbols that the channel code of 1 SF=16 can be carried;
Distribute to the channel code sum N of the SF=16 that the non-rectangle HS-PDSCH of UE comprises
codeequal the channel code number sum of the SF=16 that each rectangle HS-PDSCH comprises, distribute to the total number of symbols N that the non-rectangle HS-PDSCH of UE can carry
symbolequal the total number of symbols sum that in each rectangle HS-PDSCH, each rectangle HS-PDSCH can carry.
Preferably, set in advance the mapping table of modulation system and information bit coefficient F, described steps A 2 comprises:
Search described mapping table according to the modulation system of current employing and obtain corresponding information bit coefficient F;
The total number of symbols N that can carry according to the non-rectangle HS-PDSCH calculated
symbolthe information bit number that calculates the upper carrying of HS-PDSCH is: N
bit=N
symbolf.
Preferably, in described mapping table, modulation system QPSK modulates corresponding information bit coefficient F=2; The information bit coefficient F=4 that modulation system 16QAM is corresponding; The information bit coefficient F=6 that modulation system 64QAM is corresponding.
Preferably, the CQI that establishes the up-to-date feedback of UE in described steps A 3 is carried in the HS-SICH of m subframe, if NODEB has sent HS-PDSCH in the m-1 subframe to UE, this CQI is the CQI for the HS-PDSCH resource feedback of u=m-1 subframe; Otherwise this CQI is the CQI for the HS-PDSCH resource feedback of u=m-2 subframe;
If the channel code number of the SF=16 that the HS-PDSCH of u subframe takies is v, according to the CQI of this HS-PDSCH feedback, be carried in the HS-SICH of described m subframe, the transport block length of advising in described CQI is L, NODEB is according to formula
determine the information bit number q that current sub-frame allocation can be carried to the non-rectangle HS-PDSCH of UE.NODEB will be according to the HSDPA ability grade of described UE, selects to be not more than the length value Q of the maximum of q in 64 kinds of length values of the ability grade support at UE place, and the transport block length that non-rectangle HS-PDSCH can carry is Q.
Preferably, described step D comprises:
NODEB receives the HS-SICH that UE sends, and when the ACK/NACK information of the upper feedback of HS-SICH is ACK information, NODEB will no longer retransmit HS-DSCH transmission block corresponding to described ACK information; When NODEB detects nack message, if the retransmitted number of times of HS-DSCH transmission block corresponding to described nack message do not reach maximum number of retransmissions, NODEB will retransmit this HS-DSCH transmission block; Otherwise NODEB will no longer retransmit this HS-DSCH transmission block.
The embodiment of the present invention also proposes the high-speed physical downlink shared channel (HS-PDSCH) HS-PDSCH transfer system in a kind of high-speed downstream bag access HSDPA, and described system comprises base station NODEB and user equipment (UE),
Described NODEB is for determining the scheduling UE in the n subframe, according to the non-rectangle HS-PDSCH assembling high speed downlink shared channel HS-DSCH transmission block of distributing to UE; After described HS-DSCH transmission block is encoded and modulated, in the n+d+d1 subframe, to UE, send described HS-DSCH transmission block; D means the scheduling time delay of NODEB; D1=1 means that NODEB sends the subframe of HS-SCCH and sends the timing difference between the subframe of HS-PDSCH;
Described UE is for receiving described HS-DSCH transmission block in the n+d+d1 subframe, and, after receiving described HS-DSCH transmission block, feed back the ACK/NACK information of described HS-DSCH transmission block to NODEB by high-speed shared information channel HS-SICH in the n+d+d1+d2 subframe; D2=2 means that NODEB sends the timing difference between the subframe of the subframe of HS-PDSCH and UE feedback HS-SICH; UE, also for generating the channel quality indicator (CQI) of each non-rectangle HS-PDSCH, feeds back the CQI of described up-to-date generation to NODEB by high-speed shared information channel HS-SICH in the n+d+d1+d2 subframe.
Preferably, described NODEB comprises:
The number of symbols determination module, the number of symbols that can carry for definite non-rectangle HS-PDSCH that distributes to UE;
Computing module, the information bit number that can carry for calculating the non-rectangle HS-PDSCH distribute to UE under definite HS-PDSCH modulation system; And the transport block length of advising in the CQI according to the up-to-date feedback of UE is calculated the length of HS-DSCH transmission block;
Knockdown block, for the length assembling HS-DSCH transmission block of the HS-DSCH transmission block that calculates according to computing module;
Sending module, for the modulation system of the length value Q of HS-DSCH transmission block that Knockdown block is assembled, transmission block, transmission block with distribute to the information bit sum that the HS-PDSCH of UE can carry and send to physical layer.
Preferably, described number of symbols determination module comprises:
Division unit, be divided into plural rectangle HS-PDSCH for the non-rectangle HS-PDSCH that will distribute to UE;
Rectangle HS-PDSCH number of time slot computing unit, for for each rectangle HS-PDSCH, the timeslot number of each time slot taken according to this rectangle HS-PDSCH, determine the time slot sum N that this rectangle HS-PDSCH takies
tS;
Rectangle HS-PDSCH number of symbols computing unit, for the time slot sum N taken according to rectangle HS-PDSCH
tSwith the spreading factor SF of this rectangle HS-PDSCH, determine that the channel code number of the SF=16 that this rectangle comprises is:
the total number of symbols that this rectangle HS-PDSCH can carry is:
wherein, N
singlCode=44, mean the number of symbols that the channel code of 1 SF=16 can be carried;
Non-rectangle HS-PDSCH number of symbols computing unit, the channel code number summation of the SF=16 comprised for each rectangle HS-PDSCH that rectangle HS-PDSCH number of symbols computing unit is calculated, the channel code sum N of the SF=16 that summed result comprises as the non-rectangle HS-PDSCH that distributes to UE
code; The total number of symbols summation that in each rectangle HS-PDSCH that rectangle HS-PDSCH number of symbols computing unit is calculated, each rectangle HS-PDSCH can carry, the total number of symbols N that summed result can be carried as the non-rectangle HS-PDSCH that distributes to UE
symbol.
Preferably, described computing module comprises:
The corresponding relation table unit, the mapping table of the modulation system set in advance for preservation and information bit coefficient F;
Query unit, search described mapping table for the modulation system according to current employing and obtain corresponding information bit coefficient F;
Information bit number computing unit, the total number of symbols N that can carry for the non-rectangle HS-PDSCH calculated according to non-rectangle HS-PDSCH number of symbols computing unit
symbolthe information bit number that calculates the upper carrying of HS-PDSCH is: N
bit=N
symbolf.
Preferably, in described mapping table, modulation system QPSK modulates corresponding information bit coefficient F=2; The information bit coefficient F=4 that modulation system 16QAM is corresponding; The information bit coefficient F=6 that modulation system 64QAM is corresponding.
Preferably, if the CQI of the up-to-date feedback of UE of the length foundation of described computing module calculating HS-DSCH transmission block is carried in the HS-SICH of m subframe, if NODEB has sent HS-PDSCH in the m-1 subframe to UE, this CQI is the CQI for the HS-PDSCH resource feedback of u=m-1 subframe; Otherwise this CQI is the CQI for the HS-PDSCH resource feedback of u=m-2 subframe;
If the channel code number of the SF=16 that the HS-PDSCH of u subframe takies is v, the length of the HS-DSCH transmission block that the CQI carried on the HS-SICH of m subframe advises is L, and, according to the CQI of u subframe HS-PDSCH feedback, NODEB is according to formula
determine the information bit number q that current sub-frame allocation can be carried to the non-rectangle HS-PDSCH of UE.NODEB is according to the HSDPA ability grade of described UE, select to be not more than the length value Q of the maximum of q in the length value of 64 kinds of transmission blocks of the ability grade support at UE place, the HS-DSCH transport block length that can carry on the non-rectangle HS-PDSCH of current sub-frame allocation to UE is Q.
Preferably, described NODEB also comprises receiver module, for detection of also receiving the HS-SICH from UE, if, when the ACK/NACK information of the upper feedback of the HS-SICH that receiver module receives is ACK information, sending module will no longer be retransmitted HS-DSCH transmission block corresponding to described ACK information; When receiver module detects nack message, if the retransmitted number of times of HS-DSCH transmission block corresponding to described nack message do not reach maximum number of retransmissions, sending module will be retransmitted this HS-DSCH transmission block; Otherwise sending module will no longer be retransmitted this HS-DSCH transmission block.
As can be seen from the above technical solutions, the transfer scheme of the non-rectangle HS-PDSCH that the embodiment of the present invention proposes comprises sending method and the ACK/NACK information of HS-SICH feedback non-rectangle HS-PDSCH and the method for CQI information of non-rectangle HS-PDSCH, the present invention program can realize distributing the HS-PDSCH resource of non-rectangle to UE, improves descending peak rate.
The accompanying drawing explanation
Fig. 1 is HS-PDSCH resource allocation flow schematic diagram of the prior art;
Realize the flow chart that non-rectangle HS-PDSCH resource transmits in the HSDPA that Fig. 2 is the embodiment of the present invention;
Fig. 3 is the detail flowchart of step 201 assembling HS-DSCH transmission block in flow process shown in Fig. 2.
Embodiment
In view of the HS-PDSCH resource distribution mode of rectangle has greatly limited the descending peak rate of UE, the present inventor proposes in another piece of patent application: for improving the descending peak rate of UE, can distribute the HS-PDSCH resource of non-rectangle to UE, and proposition will be distributed to the method for the non-rectangle HS-PDSCH resource notification UE of UE.
The present invention proposes the HS-DSCH transmission block to be sent to the method for UE by the non-rectangle HS-PDSCH resource of distributing to UE, and UE will distribute to its ACK/NACK information of transmission block of the upper carrying of non-rectangle HS-PDSCH and the CQI information of the non-rectangle HS-PDSCH method that feeds back to NODEB.The basic procedure of the method as shown in Figure 2, comprises the steps:
Step 201:NODEB is according to the non-rectangle HS-PDSCH assembling HS-DSCH transmission block of distributing to UE.
Step 202:NODEB realizes HS-DSCH transmission block coding and modulation according to the non-rectangle HS-PDSCH that distributes to UE, and the radio frequency that the HS-PDSCH symbol that modulation is obtained flows by NODEB sends to UE.
After step 203:UE receives the HS-DSCH transmission block of NODEB by the HS-PDSCH transmission of non-rectangle, generate the ACK/NACK information of this transmission block; And generate the CQI information of HS-PDSCH according to the received signal to noise ratio of HS-PDSCH.
Step 204:UE feeds back the CQI information of the HS-PDSCH of the ACK/NACK information of this transmission block and up-to-date generation by HS-SICH.
Step 205:NODEB, according to the ACK/NACK information of the upper carrying of HS-SICH, determines whether to retransmit this transmission block.While dispatching UE afterwards, NODEB will distribute suitable HS-PDSCH resource to UE according to the CQI information of the upper carrying of HS-SICH.
Below will further elaborate above-mentioned each step.
Step 201:NODEB is according to the non-rectangle HS-PDSCH resource assembling HS-DSCH transmission block of distributing to UE.
The MAC layer of NODEB is the following information assembling HS-DSCH transmission block to the HS-PDSCH of UE according to scheduling, and determines the modulation system of this transmission block and the parameters of encoding for this transmission block:
(1) distribute to the channel code number of SF=16 of the non-rectangle HS-PDSCH resource occupation of UE
(2) distribute to the modulation system of the HS-PDSCH resource employing of UE
The flow process of concrete assembling HS-DSCH transmission block as shown in Figure 3, comprises the steps:
The number of symbols that the definite non-rectangle HS-PDSCH that distributes to UE of step 301:NODEB can carry.
At first, the non-rectangle HS-PDSCH that distributes to UE is divided into to plural rectangle HS-PDSCH.For each rectangle HS-PDSCH, the timeslot number of each time slot taken according to this rectangle HS-PDSCH, can determine the time slot sum N that this rectangle takies
tS.The time slot sum N taken according to this rectangle
tSwith the spreading factor SF of this rectangle HS-PDSCH, can determine that the channel code number of the SF=16 that this rectangle comprises is:
The total number of symbols that this rectangle resource can be carried is:
Here, N
singlCode=44, mean the number of symbols that the channel code of 1 SF=16 can be carried.
Distribute to the channel code sum N of the SF=16 that the non-rectangle HS-PDSCH of UE comprises
codeequal the channel code number sum of the SF=16 that each rectangle HS-PDSCH comprises.Distribute to the total number of symbols N that the non-rectangle HS-PDSCH of UE can carry
symbolequal the total number of symbols sum that in each rectangle HS-PDSCH, each rectangle can carry.
Step 302: calculate the information bit number that the non-rectangle HS-PDSCH distribute to UE under definite HS-PDSCH modulation system can carry.
Under different modulation systems, the information bit number that upper each symbol of HS-DPSCH can carry is different.Can set in advance the mapping table of modulation system and information bit coefficient F, when this modulation system is the QPSK modulation, F=2; When this modulation system is 16QAM, F=4; When this modulation system is 64QAM, F=6.
Search described mapping table according to the modulation system of current employing and obtain corresponding information bit coefficient F, the information bit number of the upper carrying of HS-PDSCH is: N
bit=N
symbolf.
Step 303: the transport block length of advising in the CQI according to the up-to-date feedback of UE is calculated the length of HS-DSCH transmission block.
A kind of method of calculating the HS-DSCH transport block length is as follows:
If the CQI of the up-to-date feedback of UE is that in the m subframe, HS-SICH carries to NODEB.The transport block length of advising in this CQI is L.This CQI is the CQI for the HS-DPSCH feedback of u subframe.If NODEB has sent HS-PDSCH in the m-1 subframe to UE, this CQI is the CQI for the HS-PDSCH feedback of u=m-1 subframe; Otherwise this CQI is the CQI for the HS-PDSCH feedback of u=m-2 subframe.
If the channel code number of the SF=16 that the HS-PDSCH of u subframe takies is v, according to the CQI of this HS-PDSCH feedback, NODEB can determine the information bit number q that current sub-frame allocation can be carried to the non-rectangle HS-PDSCH of UE.Q calculates according to the following formula:
The ability grade of HSDPA UE has multiple.Under every kind of ability grade, the number of the possible value of the length of the transmission block of the upper carrying of HS-PDSCH is 64 kinds.In 64 kinds of lengths sets that the above-mentioned q value calculated may can not be supported at the ability grade of this UE.In 64 kinds of lengths sets can supporting at this UE, selection is not more than the length value Q of the maximum of q, and the length of the upper HS-DSCH transmission block of HS-PDSCH equals this length value Q.
Certainly, can also adopt the method in existing document, it is average that the CQI fed back for UE carries out recurrence; Then the CQI value on average obtained according to recurrence calculates the length value Q of the transmission block that can carry on HS-PDSCH.
Step 304:NODEB is according to the length assembling HS-DSCH transmission block of HS-DSCH transmission block.Assemble the method for HS-DSCH transmission block with existing method according to length value particularly.
Step 305: by the modulation system of the length value Q of the HS-DSCH transmission block of assembling, transmission block, transmission block with distribute to the information bit sum that the HS-PDSCH of UE can carry and send to physical layer.
Step 202:NODEB realizes HS-DSCH transmission block coding and modulation according to the non-rectangle HS-PDSCH that distributes to UE.
To the HS-DSCH transmission block from the MAC layer, the NODEB physical layer realizes the coding to this HS-DSCH transmission block as follows:
(1) add cyclic redundancy check (CRC) (CRC) bit after the HS-DSCH transmission block of MAC layer assembling.The CRC bit number is 24.Generate the method for CRC bit with existing method.
(2) code block is cut apart: with existing method.
(3) the TURBO coding that speed is 1/3: with existing method
(4) physical layer HARQ and rate-matched: incomplete same with existing method.
(5) bit scramble: with existing method.
(6) HS-DSCH interweaves: with existing method.
(7) 16QAM constellation rearrangement: with existing method
(8) physical channel mapping: with existing method.
Below, introduce in detail above-mentioned (4) physical layer HARQ and rate-matched.
Physical layer HARQ and rate-matched comprise the steps:
(1) bitslicing: with existing method.
(2) rate-matched for the first time: with existing method.
(3) rate-matched for the second time: incomplete same with existing method
(4) bit collects: with existing method
Need for the second time to calculate the information bit number N that can carry on HS-PDSCH in rate-matched
bit, the resource that this information bit number takies according to HS-PDSCH and the modulation system of HS-DSCH transmission block calculate.Circular is referring to flow process shown in Figure of description 3.The different existing methodical characteristics of this step are: the information bit number sum that this information bit number can carry under definite modulation system for each rectangle HS-PDSCH.
After having determined the information bit number that can carry on HS-PDSCH, the speed matching method of systematic bits, check bit 1 and check bit 2 is with existing method.
Step 203:UE is by the method for HS-SICH feeding back ACK/nack message and CQI information
UE will receive the signal that NODEB sends by non-rectangle HS-PDSCH, by joint-detection, determine: the estimation of the symbol sebolic addressing carried on the non-rectangle HS-PDSCH channel code shared at each time slot.And according to modulation system definite from HS-SCCH, the estimation of symbol sebolic addressing on each channel code is carried out to demodulation, then carry out decoding.The characteristics that this process is different from existing process are: the UE needs determine according to non-rectangle HS-PDSCH and the modulation system of distributing to it the information bit number that HS-PDSCH can carry, and when decoding, need to use this parameter.Circular can with the NODEB side, to calculate the method that this parameter adopts identical.
As UE, during to the HS-DSCH transmission block correct decoding that sends by non-rectangle HS-DPSCH, UE will generate ACK information; Otherwise UE will generate nack message.Simultaneously, UE will generate according to the non-rectangle HS-PDSCH received the CQI information of HS-PDSCH in the average SNR of each time slot.
Difference according to NODEB by the method for non-rectangle HS-PDSCH notice UE, the method that UE feeds back to UE by HS-SICH by ACK/NACK information and CQI information is as follows:
Preferably, when adopting HS-SCCH forwarding method notice to distribute to the non-rectangle HS-PDSCH of UE, when each concurrent HS-SCCH is positioned at same time slot, select a HS-SICH from the HS-SICH with each HS-SCCH pairing, by this HS-SICH, the CQI information of the ACK/NACK information of above-mentioned non-rectangle HS-PDSCH and up-to-date HS-PDSCH is fed back to NODEB.
Preferably, when adopting HS-SCCH forwarding method notice to distribute to the non-rectangle HS-PDSCH of UE, when each concurrent HS-SCCH is positioned at different time-gap and be positioned at different time-gap with the HS-SICH of each HS-SCCH pairing, select the HS-SICH with each HS-SCCH pairing.These HS-SICH will carry the ACK/NACK information of above-mentioned non-rectangle HS-PDSCH and the CQI information of up-to-date HS-PDSCH simultaneously.
Preferably, when adopting HS-SCCH forwarding method notice to distribute to the non-rectangle HS-PDSCH of UE, if while with each HS-SICH of concurrent each HS-SCCH pairing, being positioned at same time slot, select a HS-SICH from these HS-SICH, only by this HS-SICH, the CQI information of the ACK/NACK information of above-mentioned HS-DSCH transmission block and up-to-date HS-PDSCH is fed back to NODEB.
NODEB and UE can make an appointment and adopt on earth above-mentioned which kind of mode to feed back the ACK/NACK information of UE and up-to-date CQI information.Also can select one group from above-mentioned three kinds of methods by RNC, by method notice NODEB and the UE selected.
When adopting the HS-SCCH notice of supporting non-rectangle HS-PDSCH to distribute to distribute to the non-rectangle HS-PDSCH of UE, adopt the HS-SICH with this HS-SCCH pairing, the CQI information of the ACK/NACK information of above-mentioned HS-DSCH transmission block and up-to-date HS-PDSCH is fed back to UE.
Step 204:NODEB determines whether to retransmit this transmission block according to the ACK/NACK information of the upper carrying of HS-SICH.
When UE feeds back the ACK/NACK information of HS-DSCH transmission block by a unique HS-SICH, NODEB receives the HS-SICH that UE sends, and when the ACK/NACK information of the upper feedback of HS-SICH is ACK information, NODEB will no longer retransmit this transmission block.When NODEB detects nack message, if the retransmitted number of times of this transmission block does not reach maximum number of retransmissions, NODEB will retransmit this transmission block; Otherwise NODEB will no longer retransmit this transmission block.
During the ACK/NACK information of the HS-SICH feedback HS-DSCH transmission block as UE by more than, UE is merged the estimation of the symbol sebolic addressing of the upper carrying of each HS-SICH, then carries out demodulation and decoding.The ACK/NACK information of the upper carrying of HS-SICH and the modulation system information of recommendation can be obtained by demodulation, the transport block length information of recommendation can be obtained by decoding.The modulation system of recommending and the transport block length of recommendation form CQI information.
The embodiment of the present invention has also proposed the HS-PDSCH transfer system in a kind of HSDPA, and described system comprises NODEB and UE,
Described NODEB is for determining the scheduling UE in the n subframe, according to the non-rectangle HS-PDSCH assembling high speed downlink shared channel HS-DSCH transmission block of distributing to UE; After described HS-DSCH transmission block is encoded and modulated, in the n+d+d1 subframe, to UE, send described HS-DSCH transmission block; D means the scheduling time delay of NODEB; D1=1 means that NODEB sends the subframe of HS-SCCH and sends the timing difference between the subframe of HS-PDSCH;
Described UE is for receiving described HS-DSCH transmission block in the n+d+d1 subframe, and, after receiving described HS-DSCH transmission block, feed back the ACK/NACK information of described HS-DSCH transmission block to NODEB by high-speed shared information channel HS-SICH in the n+d+d1+d2 subframe; D2=2 means that NODEB sends the timing difference between the subframe of the subframe of HS-PDSCH and UE feedback HS-SICH; UE, also for generating the channel quality indicator (CQI) of each non-rectangle HS-PDSCH, feeds back the CQI of described up-to-date generation to NODEB by high-speed shared information channel HS-SICH in the n+d+d1+d2 subframe.
Preferably, described NODEB comprises:
The number of symbols determination module, the number of symbols that can carry for definite non-rectangle HS-PDSCH that distributes to UE;
Computing module, the information bit number that can carry for calculating the non-rectangle HS-PDSCH distribute to UE under definite HS-PDSCH modulation system; And the transport block length of advising in the CQI according to the up-to-date feedback of UE is calculated the length of the HS-DSCH transmission block carried on the HS-PDSCH to UE in the n+d+d1 sub-frame allocation;
Knockdown block, for the length assembling HS-DSCH transmission block of the HS-DSCH transmission block that calculates according to computing module;
Sending module, for the modulation system of the length value Q of HS-DSCH transmission block that Knockdown block is assembled, transmission block, transmission block with distribute to the information bit sum that the HS-PDSCH of UE can carry and send to physical layer.
Preferably, described number of symbols determination module comprises:
Division unit, be divided into plural rectangle HS-PDSCH for the non-rectangle HS-PDSCH that will distribute to UE;
Rectangle HS-PDSCH number of time slot computing unit, for for each rectangle HS-PDSCH, the timeslot number of each time slot taken according to this rectangle HS-PDSCH, determine the time slot sum N that this rectangle HS-PDSCH takies
tS;
Rectangle HS-PDSCH number of symbols computing unit, for the time slot sum N taken according to rectangle HS-PDSCH
tSwith the spreading factor SF of this rectangle HS-PDSCH, determine that the channel code number of the SF=16 that this rectangle comprises is:
the total number of symbols that this rectangle HS-PDSCH can carry is:
wherein, N
singlCode=44, mean the number of symbols that the channel code of 1 SF=16 can be carried;
Non-rectangle HS-PDSCH number of symbols computing unit, the channel code number summation of the SF=16 comprised for each rectangle HS-PDSCH that rectangle HS-PDSCH number of symbols computing unit is calculated, the channel code sum N of the SF=16 that summed result comprises as the non-rectangle HS-PDSCH that distributes to UE
code; The total number of symbols summation that in each rectangle HS-PDSCH that rectangle HS-PDSCH number of symbols computing unit is calculated, each rectangle HS-PDSCH can carry, the total number of symbols N that summed result can be carried as the non-rectangle HS-PDSCH that distributes to UE
symbol.
Preferably, described computing module comprises:
The corresponding relation table unit, the mapping table of the modulation system set in advance for preservation and information bit coefficient F;
Query unit, search described mapping table for the modulation system according to current employing and obtain corresponding information bit coefficient F;
Information bit number computing unit, the total number of symbols N that can carry for the non-rectangle HS-PDSCH calculated according to the number of symbols determination module
symbolthe information bit number that calculates the upper carrying of HS-PDSCH is: N
bit=N
symbolf.
Preferably, in described mapping table, modulation system QPSK modulates corresponding information bit coefficient F=2; The information bit coefficient F=4 that modulation system 16QAM is corresponding; The information bit coefficient F=6 that modulation system 64QAM is corresponding.
Preferably, if the CQI of the up-to-date feedback of UE of the length foundation of described computing module calculating HS-DSCH transmission block is carried in the HS-SICH of m subframe, if NODEB has sent HS-PDSCH in the m-1 subframe to UE, this CQI is the CQI for the HS-PDSCH resource feedback of u=m-1 subframe; Otherwise this CQI is the CQI for the HS-PDSCH resource feedback of u=m-2 subframe;
If the channel code number of the SF=16 that the HS-PDSCH of u subframe takies is v, the transport block length L advised in the CQI according to this HS-PDSCH feedback, NODEB is according to formula
determine the information bit number q that current sub-frame allocation can be carried to the non-rectangle HS-PDSCH of UE.NODEB is according to the HSDPA ability grade of this UE, select to be not more than the length value Q of the maximum of q in the length value of 64 kinds of transmission blocks of the ability grade support at UE place, the HS-DSCH transport block length that can carry on the non-rectangle HS-PDSCH of current sub-frame allocation to UE is Q.
Preferably, described NODEB also comprises receiver module, for detection of also receiving the HS-SICH from UE, if, when the ACK/NACK information of the upper feedback of the HS-SICH that receiver module receives is ACK information, sending module will no longer be retransmitted HS-DSCH transmission block corresponding to described ACK information; When receiver module detects nack message, if the retransmitted number of times of HS-DSCH transmission block corresponding to described nack message do not reach maximum number of retransmissions, sending module will be retransmitted this HS-DSCH transmission block; Otherwise sending module will no longer be retransmitted this HS-DSCH transmission block.
The transfer scheme of the non-rectangle HS-PDSCH that the embodiment of the present invention proposes comprises sending method and the ACK/NACK information of HS-SICH feedback non-rectangle HS-PDSCH and the method for CQI information of non-rectangle HS-PDSCH, the present invention program can realize distributing the HS-PDSCH resource of non-rectangle to UE, improves descending peak rate.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of making, be equal to replacement, improvement etc., within all should being included in the scope of protection of the invention.
Claims (14)
1. a high-speed downstream bag accesses the high-speed physical downlink shared channel (HS-PDSCH) HS-PDSCH transfer approach in HSDPA, it is characterized in that, comprises the steps:
A, as base station NODEB after the n subframe is determined scheduling UE, NODEB is according to the non-rectangle HS-PDSCH assembling high speed downlink shared channel HS-DSCH transmission block of distributing to user equipment (UE);
After B, NODEB are encoded to described HS-DSCH transmission block and modulate, in the n+d+d1 subframe, to UE, send described HS-DSCH transmission block; D means the scheduling time delay of NODEB; D1=1 means that NODEB sends the subframe of HS-SCCH and sends the timing difference between the subframe of HS-PDSCH;
C, UE, after the n+d+d1 subframe receives described HS-DSCH transmission block, feed back the ACK/NACK information of described HS-DSCH transmission block to NODEB by high-speed shared information channel HS-SICH in the n+d+d1+d2 subframe; D2=2 means that NODEB sends the timing difference between the subframe of the subframe of HS-PDSCH and UE feedback HS-SICH;
D, UE generate the channel quality indicator (CQI) of each non-rectangle HS-PDSCH, and UE feeds back the CQI of up-to-date generation to NODEB by high-speed shared information channel HS-SICH in the n+d+d1+d2 subframe.
2. method according to claim 1, is characterized in that, described steps A comprises:
The number of symbols that the definite non-rectangle HS-PDSCH that distributes to UE of A1, NODEB can carry;
A2, calculate the information bit number that the non-rectangle HS-PDSCH distribute to UE under definite HS-PDSCH modulation system can carry;
The transport block length L advised in A3, the CQI according to the up-to-date feedback of UE calculates the length Q of the HS-DSCH transmission block that the n+d+d1 sub-frame allocation can carry to the HS-PDSCH of UE;
A4, NODEB are according to the length Q assembling HS-DSCH transmission block of calculated HS-DSCH transmission block;
A5, by the modulation system of the length value Q of the HS-DSCH transmission block of assembling, transmission block, transmission block with distribute to the information bit sum that the HS-PDSCH of UE can carry and send to physical layer.
3. method according to claim 2, is characterized in that, described steps A 1 comprises:
The non-rectangle HS-PDSCH that distributes to UE is divided into to plural rectangle HS-PDSCH;
For each rectangle HS-PDSCH, the timeslot number of each time slot taken according to this rectangle HS-PDSCH, determine the time slot sum N that this rectangle HS-PDSCH takies
tS;
The time slot sum N taken according to this rectangle HS-PDSCH
tSwith the spreading factor SF of this rectangle HS-PDSCH, determine that the channel code number of the SF=16 that this rectangle HS-PDSCH comprises is:
the total number of symbols that this rectangle HS-PDSCH can carry is:
wherein, N
singlCode=44, mean the number of symbols that the channel code of 1 SF=16 can be carried;
Distribute to the channel code sum N of the SF=16 that the non-rectangle HS-PDSCH of UE comprises
codeequal the channel code number sum of the SF=16 that each rectangle HS-PDSCH comprises, distribute to the total number of symbols N that the non-rectangle HS-PDSCH of UE can carry
symbolequal the total number of symbols sum that in each rectangle HS-PDSCH, each rectangle HS-PDSCH can carry.
4. method according to claim 3, is characterized in that, sets in advance the mapping table of modulation system and information bit coefficient F, and described steps A 2 comprises:
Search described mapping table according to the modulation system of current employing and obtain corresponding information bit coefficient F;
The total number of symbols N that can carry according to the non-rectangle HS-PDSCH calculated
symbolthe information bit number that calculates the upper carrying of HS-PDSCH is: N
bit=N
symbolf.
5. method according to claim 4, is characterized in that, in described mapping table, modulation system QPSK modulates corresponding information bit coefficient F=2; The information bit coefficient F=4 that modulation system 16QAM is corresponding; The information bit coefficient F=6 that modulation system 64QAM is corresponding.
6. method according to claim 3, it is characterized in that, if in described steps A 3, the CQI of the up-to-date feedback of UE is carried in the HS-SICH of m subframe, if NODEB has sent HS-PDSCH in the m-1 subframe to UE, this CQI is the CQI for the HS-PDSCH resource feedback of u=m-1 subframe; Otherwise this CQI is the CQI for the HS-PDSCH resource feedback of u=m-2 subframe;
If the channel code number of the SF=16 that the HS-PDSCH of u subframe takies is v, according to the CQI of this HS-PDSCH feedback, be carried in the HS-SICH of described m subframe, the transport block length of advising in described CQI is L, NODEB is according to formula
determine the information bit number q that current sub-frame allocation can be carried to the non-rectangle HS-PDSCH of UE; NODEB will be according to the HSDPA ability grade of described UE, selects to be not more than the length value Q of the maximum of q in 64 kinds of length values of the ability grade support at UE place, and the transport block length that non-rectangle HS-PDSCH can carry is Q.
7. according to the described method of claim 1 to 6 any one, it is characterized in that, described step D comprises:
NODEB receives the HS-SICH that UE sends, and when the ACK/NACK information of the upper feedback of HS-SICH is ACK information, NODEB will no longer retransmit HS-DSCH transmission block corresponding to described ACK information; When NODEB detects nack message, if the retransmitted number of times of HS-DSCH transmission block corresponding to described nack message do not reach maximum number of retransmissions, NODEB will retransmit this HS-DSCH transmission block; Otherwise NODEB will no longer retransmit this HS-DSCH transmission block.
8. a high-speed downstream bag accesses the high-speed physical downlink shared channel (HS-PDSCH) HS-PDSCH transfer system in HSDPA, and described system comprises base station NODEB and user equipment (UE), it is characterized in that,
Described NODEB is for determining the scheduling UE in the n subframe, according to the non-rectangle HS-PDSCH assembling high speed downlink shared channel HS-DSCH transmission block of distributing to UE; After described HS-DSCH transmission block is encoded and modulated, in the n+d+d1 subframe, to UE, send described HS-DSCH transmission block; D means the scheduling time delay of NODEB; D1=1 means that NODEB sends the subframe of HS-SCCH and sends the timing difference between the subframe of HS-PDSCH;
Described UE is for receiving described HS-DSCH transmission block in the n+d+d1 subframe, and, after receiving described HS-DSCH transmission block, feed back the ACK/NACK information of described HS-DSCH transmission block to NODEB by high-speed shared information channel HS-SICH in the n+d+d1+d2 subframe; D2=2 means that NODEB sends the timing difference between the subframe of the subframe of HS-PDSCH and UE feedback HS-SICH; UE, also for generating the channel quality indicator (CQI) of each non-rectangle HS-PDSCH, feeds back the CQI of up-to-date generation to NODEB by high-speed shared information channel HS-SICH in the n+d+d1+d2 subframe.
9. system according to claim 8, is characterized in that, described NODEB comprises:
The number of symbols determination module, the number of symbols that can carry for definite non-rectangle HS-PDSCH that distributes to UE;
Computing module, the information bit number that can carry for calculating the non-rectangle HS-PDSCH distribute to UE under definite HS-PDSCH modulation system; And the transport block length of advising in the CQI according to the up-to-date feedback of UE is calculated the length of HS-DSCH transmission block;
Knockdown block, for the length assembling HS-DSCH transmission block of the HS-DSCH transmission block that calculates according to computing module;
Sending module, for the modulation system of the length value Q of HS-DSCH transmission block that Knockdown block is assembled, transmission block, transmission block with distribute to the information bit sum that the HS-PDSCH of UE can carry and send to physical layer.
10. system according to claim 9, is characterized in that, described number of symbols determination module comprises:
Division unit, be divided into plural rectangle HS-PDSCH for the non-rectangle HS-PDSCH that will distribute to UE;
Rectangle HS-PDSCH number of time slot computing unit, for for each rectangle HS-PDSCH, the timeslot number of each time slot taken according to this rectangle HS-PDSCH, determine the time slot sum N that this rectangle HS-PDSCH takies
tS;
Rectangle HS-PDSCH number of symbols computing unit, for the time slot sum N taken according to rectangle HS-PDSCH
tSwith the spreading factor SF of this rectangle HS-PDSCH, determine that the channel code number of the SF=16 that this rectangle comprises is:
the total number of symbols that this rectangle HS-PDSCH can carry is:
wherein, N
singlCode=44, mean the number of symbols that the channel code of 1 SF=16 can be carried;
Non-rectangle HS-PDSCH number of symbols computing unit, the channel code number summation of the SF=16 comprised for each rectangle HS-PDSCH that rectangle HS-PDSCH number of symbols computing unit is calculated, the channel code sum N of the SF=16 that summed result comprises as the non-rectangle HS-PDSCH that distributes to UE
code; The total number of symbols summation that in each rectangle HS-PDSCH that rectangle HS-PDSCH number of symbols computing unit is calculated, each rectangle HS-PDSCH can carry, the total number of symbols N that summed result can be carried as the non-rectangle HS-PDSCH that distributes to UE
symbol.
11. system according to claim 10, is characterized in that, described computing module comprises:
The corresponding relation table unit, the mapping table of the modulation system set in advance for preservation and information bit coefficient F;
Query unit, search described mapping table for the modulation system according to current employing and obtain corresponding information bit coefficient F;
Information bit number computing unit, the total number of symbols N that can carry for the non-rectangle HS-PDSCH calculated according to non-rectangle HS-PDSCH number of symbols computing unit
symbolthe information bit number that calculates the upper carrying of HS-PDSCH is: N
bit=N
symbolf.
12. system according to claim 11, is characterized in that, in described mapping table, modulation system QPSK modulates corresponding information bit coefficient F=2; The information bit coefficient F=4 that modulation system 16QAM is corresponding; The information bit coefficient F=6 that modulation system 64QAM is corresponding.
13. system according to claim 10, it is characterized in that, if the CQI of the up-to-date feedback of UE of the length foundation of described computing module calculating HS-DSCH transmission block is carried in the HS-SICH of m subframe, if NODEB has sent HS-PDSCH in the m-1 subframe to UE, this CQI is the CQI for the HS-PDSCH resource feedback of u=m-1 subframe; Otherwise this CQI is the CQI for the HS-PDSCH resource feedback of u=m-2 subframe;
If the channel code number of the SF=16 that the HS-PDSCH of u subframe takies is v, the length of the HS-DSCH transmission block that the CQI carried on the HS-SICH of m subframe advises is L, and, according to the CQI of u subframe HS-PDSCH feedback, NODEB is according to formula
determine the information bit number q that current sub-frame allocation can be carried to the non-rectangle HS-PDSCH of UE; NODEB is according to the HSDPA ability grade of described UE, select to be not more than the length value Q of the maximum of q in the length value of 64 kinds of transmission blocks of the ability grade support at UE place, the HS-DSCH transport block length that can carry on the non-rectangle HS-PDSCH of current sub-frame allocation to UE is Q.
14. the described system of according to Claim 8 to 13 any one, it is characterized in that, described NODEB also comprises receiver module, for detection of also receiving the HS-SICH from UE, if, when the ACK/NACK information of the upper feedback of the HS-SICH that receiver module receives is ACK information, sending module will no longer be retransmitted HS-DSCH transmission block corresponding to described ACK information; When receiver module detects nack message, if the retransmitted number of times of HS-DSCH transmission block corresponding to described nack message do not reach maximum number of retransmissions, sending module will be retransmitted this HS-DSCH transmission block; Otherwise sending module will no longer be retransmitted this HS-DSCH transmission block.
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| CN104253676A (en) * | 2013-06-28 | 2014-12-31 | 华为技术有限公司 | Feedback information transmission method, relative devices and communication system |
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| CN1647562A (en) * | 2002-04-06 | 2005-07-27 | Lg电子株式会社 | Radio link parameter updating method in mobile communication system |
| CN101500308A (en) * | 2008-01-31 | 2009-08-05 | 展讯通信（上海）有限公司 | HSDPA medium and high order modulated downlink signaling transmission method for TD-SCDMA system |
| CN101507323A (en) * | 2006-08-11 | 2009-08-12 | Ut斯达康通讯有限公司 | Method for NODE B to Obtain Channel Quality Information in TDD HSDPA System |
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| CN1647562A (en) * | 2002-04-06 | 2005-07-27 | Lg电子株式会社 | Radio link parameter updating method in mobile communication system |
| CN101507323A (en) * | 2006-08-11 | 2009-08-12 | Ut斯达康通讯有限公司 | Method for NODE B to Obtain Channel Quality Information in TDD HSDPA System |
| CN101500308A (en) * | 2008-01-31 | 2009-08-05 | 展讯通信（上海）有限公司 | HSDPA medium and high order modulated downlink signaling transmission method for TD-SCDMA system |
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