CN103178942B - Signal transmission method, base station and subscriber equipment - Google Patents

Signal transmission method, base station and subscriber equipment Download PDF

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CN103178942B
CN103178942B CN201110433208.9A CN201110433208A CN103178942B CN 103178942 B CN103178942 B CN 103178942B CN 201110433208 A CN201110433208 A CN 201110433208A CN 103178942 B CN103178942 B CN 103178942B
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dci
bit
ack
nack information
response message
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CN103178942A (en
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李超君
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Abstract

Embodiments provide a kind of signal transmission method, whether described method includes: receive the uplink data frames that user equipment (UE) sends, and receive according to described uplink data frames and correctly determine the correct response fed back to described UE or wrong responses ACK/NACK information;The Physical Downlink Control Channel ePDCCH of physical downlink control channel PDCCH or enhancing sends Downlink Control Information DCI, wherein said DCI to described UE and includes LbitThe response message territory of bit, described LbitThe response message territory of bit carries described ACK/NACK information, LbitFor the integer more than 1.According to embodiments of the present invention, the problem alleviating the PHICH capacity anxiety utilizing traditional approach to be caused to UE feedback response message at PHICH, improve the operational efficiency of system.

Description

Signal transmission method, base station and subscriber equipment
Technical field
The present embodiments relate to wireless communication field, and more particularly, to signal transmission method and equipment.
Background technology
nullLong Term Evolution (LongTermEvolution,Be called for short LTE) system or strengthen Long Term Evolution (LongTermEvolutionAdvanced,It is called for short LTE-A) in system,Base station EvolvedNodeB,It is called for short eNB) receiving subscriber equipment (UserEquipment,It is called for short UE) after the upstream data bag that sends,Need by physical mixed automatic re-transmission indicating channel (Physicalhybrid-ARQindicatorchannel,It is called for short PHICH) send correct response (Acknowledgement to subscriber equipment,It is called for short ACK)/wrong responses (Non-Acknowledgement,It is called for short NACK) message.If base station has correctly received the upstream data bag that UE sends, then by PHICH feeding back ACK to UE;Whereas if base station is not properly received the upstream data bag that UE sends, then by PHICH feedback NACK to UE.After UE receives NACK message, then retransmit this packet.In the system of LTE version 10 (Rel-10) and before version, the time domain mapping range of PHICH is front 1/2/3 symbol in a subframe (subframe), and the frequency domain mapping range of PHICH is whole system bandwidth.
In the LTE system of LTERel-10 and afterwards version, the existence of heterogeneous network scene (heterogeneousnetworkscenario) causes the PHICH interference aggravation of minizone;Multi-user multiple-input and multiple-output (MulipleInputMultipleOutput, it is called for short MIMO) and coordinate multipoint sends and reception (CoordinatedMultiplePointTransmissionandReception, it being called for short CoMP) introducing of the technology such as the CoMP scene of mark (especially share same cells) causes the resource collision of PHICH to raise, i.e. PHICH off-capacity;The employing of new carrier type causes PHICH to configure.
For being configured with relay station (RelayNode, be called for short RN) LTE system, eNB is after receiving the upstream data bag that RN sends, (NewDataIndicator is indicated by the new data in uplink authorization (ULGrant), it is called for short NDI) notify whether this packet of RN receives correctly, i.e. RN is the ACK/NACK feedback that need not obtain upstream data bag from PHICH.Use this scheme, when UE quantity is more, needs more ULGrant to indicate ACK/NACK, add the expense of PDCCH.
In order to solve the problems referred to above, the transmission mechanism to ACK/NACK information is needed to introduce new design.
Summary of the invention
The embodiment of the present invention provides a kind of signal transmission method, it is possible to send ACK/NACK message, the problem alleviating PHICH off-capacity on PDCCH.
On the one hand, it is provided that a kind of signal transmission method, described method includes:
Receive the uplink data frames that user equipment (UE) sends, and whether receive according to described uplink data frames and correctly determine the correct response fed back to described UE or wrong responses ACK/NACK information;
The Physical Downlink Control Channel ePDCCH of physical downlink control channel PDCCH or enhancing sends Downlink Control Information DCI, wherein said DCI to described UE and includes LbitThe response message territory of bit, described LbitThe response message territory of bit carries described ACK/NACK information, LbitFor the integer more than 1.
On the other hand, it is provided that a kind of signal transmission method, described method includes:
Uplink data frames is sent to base station;
At the Physical Downlink Control Channel ePDCCH range searching DCI of physical downlink control channel PDCCH or enhancing, wherein said DCI includes LbitThe response message territory of bit, described LbitThe response message territory of bit carries the correct response for described uplink data frames or wrong responses ACK/NACK information, the L of described base station feedbackbitFor the integer more than 1.
On the other hand, it is provided that a kind of base station, described base station includes:
Receive unit, for receiving the uplink data frames that user equipment (UE) sends, and whether receive according to described uplink data frames and correctly determine the correct response fed back to described UE or wrong responses ACK/NACK information;
Transmitting element, includes L for sending Downlink Control Information DCI, wherein said DCI to described UE on the Physical Downlink Control Channel ePDCCH of physical downlink control channel PDCCH or enhancingbitThe response message territory of bit, described LbitThe response message territory of bit carries described ACK/NACK information, LbitFor the integer more than 1.
On the other hand, it is provided that a kind of subscriber equipment, described subscriber equipment includes:
Transmitting element, for sending uplink data frames to base station;
Processing unit, for the Physical Downlink Control Channel ePDCCH range searching DCI in physical downlink control channel PDCCH or enhancing, wherein said DCI includes LbitThe response message territory of bit, described LbitThe response message territory of bit carries the correct response for described uplink data frames or wrong responses ACK/NACK information, the L of described base station feedbackbitFor the integer more than 1.
According to embodiments of the present invention, the ACK/NACK information of the uplink data frames sent for UE is carried in DCI, and feed back to UE on PDCCH, the problem alleviating the PHICH capacity anxiety utilizing traditional approach to be caused to UE feedback response message at PHICH, improve the operational efficiency of system.Additionally, ACK/NACK information is carried on ePDCCH, the ICIC of frequency domain can be carried out, solve the PHICH interference problem under heterogeneous network scene.Furthermore, it is possible to be configured flexibly DCI according to current response message feedback requirements, improve the motility of system configuration, solve PHICH off-capacity problem.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the schematic flow diagram of signal transmission method according to embodiments of the present invention;
Fig. 2 A is the schematic configuration diagram of HI-DCI according to embodiments of the present invention;
Fig. 2 B is the schematic configuration diagram of another kind of HI-DCI according to embodiments of the present invention;
Fig. 3 is the schematic flow diagram of the signal transmission method according to further embodiment of the present invention;
Fig. 4 is the schematic flow diagram of the signal transmission method according to further embodiment of the present invention;
Fig. 5 is the schematic flow diagram of the signal transmission method according to further embodiment of the present invention;
Fig. 6 is the schematic flow diagram of the signal transmission method according to further embodiment of the present invention;
Fig. 7 is the schematic flow diagram of the signal transmission method of another aspect according to embodiments of the present invention;
Fig. 8 is the schematic flow diagram of the signal transmission method of the further embodiment of another aspect according to embodiments of the present invention;
Fig. 9 is the schematic flow diagram of the signal transmission method of the further embodiment of another aspect according to embodiments of the present invention;
Figure 10 is the schematic flow diagram of the signal transmission method of the further embodiment of another aspect according to embodiments of the present invention;
Figure 11 is the schematic flow diagram of the signal transmission method of the further embodiment of another aspect according to embodiments of the present invention;
Figure 12 is the schematic configuration diagram of base station according to embodiments of the present invention;
Figure 13 is the schematic configuration diagram of the base station according to further embodiment of the present invention;
Figure 14 is the schematic configuration diagram of subscriber equipment according to embodiments of the present invention;
Figure 15 is the schematic configuration diagram of the subscriber equipment according to further embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of protection of the invention.
In embodiments of the present invention, UE is also referred to as mobile terminal (MobileTerminal), mobile subscriber equipment etc., can through wireless access network (such as, RAN, RadioAccessNetwork) communicate with one or more core net, subscriber equipment can be mobile terminal, such as mobile phone (or be referred to as " honeycomb " phone) and the computer with mobile terminal, such as, can be portable, pocket, hand-held, built-in computer or vehicle-mounted mobile device, they and wireless access network exchange language and/or data.
Base station, can be the evolved base station (eNB or e-NodeB, evolutionalNodeB) in LTE.
Fig. 1 is the schematic flow diagram of signal transmission method 100 according to embodiments of the present invention.As it is shown in figure 1, method 100 includes:
110: receive the uplink data frames that UE sends, and whether receive according to described uplink data frames and correctly determine the correct response fed back to described UE or wrong responses ACK/NACK information;
120: on the Physical Downlink Control Channel ePDCCH of physical downlink control channel PDCCH or enhancing, send Downlink Control Information DCI, wherein said DCI to described UE include LbitThe response message territory of bit, described LbitThe response message territory of bit carries described ACK/NACK information.
In order to more clearly illustrate the embodiment of the present invention, it should be noted that for LTERel-8/9/10 system, front 1~4 OFDM symbol is PDCCH region, i.e. PDCCH Yu PDSCH in this region is the time-division, and in the embodiment of the present invention, the PDCCH in the PDCCH region of Rel-8/9/10 definition is called traditional PDCCH.In LTE system after LTERel-10, introduce new PDCCH region.PDCCH and PDSCH in this region is frequency division, and in the most each time slot (slot), PDCCH from PDSCH takies different Resource Block (ResourceBlock is called for short RB) or subcarrier (Subcarrier).In the embodiment of the present invention, the PDCCH in this new PDCCH region is called the PDCCH (enhancedPDCCH is called for short ePDCCH) strengthened.EPDCCH can be to use transmission mode based on MIMO precoding mode, it would however also be possible to employ diversity mode, demodulates it addition, ePDCCH can use based on UE specific reference signals (UEReferenceSignal).
EPDCCH can be divided into centralized (localized) ePDCCH and distributed (distributed) ePDCCH.Centralized ePDCCH uses the centralized frequency domain resource method of salary distribution, and i.e. one ePDCCH is dispensed in continuous print frequency domain resource, such as: in a RB, or on the several subcarrier of continuous print;Distributed ePDCCH uses distributed frequency domain resource distribution mode, and i.e. one ePDCCH is dispensed in several sections of frequency domain resource farther out of interval, so can obtain frequency diversity gain.
One ePDCCH can be polymerized by n (n is the integer more than 0, such as, 1,2,4 or 8) individual continuous logic unit, and n represents the polymerization rank (AggregationLevelAL) of an ePDCCH.Described logical block is similar to form the control Channel Elements (ControlChannelElement is called for short CCE) of PDCCH, the CCE referred to herein as strengthened (enhancedCCE is called for short eCCE).
The scheduling of PUSCH is indicated by uplink authorization (ULGrant), and ULGrant can be the DCI being carried on PDCCH, it is also possible to be accidental access response mandate (RandomAccessResponseGrant).
For the problem alleviating PHICH capacity constraint, the embodiment of the present invention uses the Downlink Control Information (DownlinkControlInformation of transmission on PDCCH, it is called for short DCI) carry out response information transmission, i.e. correct response ACK or wrong responses NACK.In order to improve the efficiency of DCI response information transmission, the embodiment of the present invention devises and the ACK/NACK information level being used for multiple UE is unified into a DCI, as shown in Figure 2 a.For convenience, in the embodiment of the present invention, this DCI is called mixed automatic retransfer instruction DCI (HARQIndicatorDCI is called for short HI-DCI).One HI-DCI includes LbitResponse message territory (the L of bit (bit)bitInteger for more than 1), L can be fed backbitIndividual ACK/NACK information, each bit inside response message territory is used for representing an ACK/NACK information.
According to embodiments of the present invention, the number of the ACK/NACK information that HI-DCI can carry, i.e. Lbit, can determine according to polymerization rank, polymerization rank is the highest, LbitThe biggest, such as when polymerization rank is 2, Lbit=15;When polymerization rank is 4, Lbit=28;When polymerization rank is 8, Lbit=50.
According to another kind embodiment of the present invention, LbitCan also determine, such as according to the DCI bit number of existing DCI format: the length of HI-DCI includes 2 kinds, consistent with the DCI length of DCIformat1C and DCIformat1A respectively.Specifically, as a example by the system bandwidth of 20MHz, the DCI bit number (deducting CRC bit number) of DCIformat1C and DCIformat1A is respectively 15 and 28.So LbitCan be 15 and 28, i.e. the HI-DCI of 2 kinds of length be supported in base station, can carry 15 and 28 ACK/NACK bits respectively.
Or, according to another kind embodiment of the present invention, it is also possible to determine according to the DCI bit number of polymerization rank and existing DCI format and comprehensively determine Lbit, such as, when polymerization rank is 2, determine L according to DCIformat1Cbit;When polymerization rank is 4, determine L according to DCIformat1Abit;When polymerization rank is 2, determine L according to DCIformat2Cbit
Another aspect according to embodiments of the present invention, the L of HI-DCIbitBit response message territory is possible not only to include response message ACK/NACK, but also extra information can be included, such as other schedule informations or broadcast/multi broadcast information, for concrete example, such as ACK/NACK information is integrated in a HI-DCI with emissive power control command (TransmitPowerControlCommand is called for short TPC command).In this case, in order to compatible tradition UE, the such as UE in LTERel-8/9/10, tradition UE can regard this HI-DCI as DCIformat3/3A, the RNTI scrambling this HI-DCI can be such as TPC-RNTI.Can be same territory for new UE, response message territory and TPC command territory, it is also possible to be different territories.When using same territory, when carrying out HARQ feedback, in HI resource, carrying is ACK/NACK information, and on other moment, HI resource, carrying is TPC command.
In general, usual each DCI can enclose cyclic redundancy check (CRC) part (CyclicRedundancyCheck is called for short CRC), for the error detection (Errordetection) of this DCI.In order to be different from PDCCH other DCI of transmission, HI-DCI in the embodiment of the present invention uses the Radio Network Temporary Identifier (RadioNetworkTemporaryIdentity different to CRC scrambling, it is called for short RNTI), it is the DCI for transmitting ACK/NACK that this scramble information is used in particular for indicating this HI-DCI.Describe for convenience, the present invention can be referred to as HI-RNTI the RNTI of scrambling HI-DCI.In order to allow UE identify described HI-DCI, need to notify UE, such as, shown in Fig. 3, before the step 110 of method 100, perform step 102: base station sends the first configuration signal to UE, and wherein said first configuration signal includes the RNTI information for scrambling HI-DCI.Although before step 102 is shown in step 110, but can arranging and send any time before HI-DCI to UE.
According to embodiments of the present invention, this first configuration signal can be high-level signaling (HighLayerSignalling).For high-level signaling described here is relative physical layer signaling, the signaling that the frequency that sends from higher level (layer) is slower, including wireless heterogeneous networks (RadioResourceControl, it is called for short RRC) signaling and medium education (MediaAccessControl, MAC) signaling etc..Preferably, base station notifies, by special RRC signaling (DedicatedRRCSignaling), the HI-RNTI that UE uses.
According to embodiments of the present invention, HI-DCI can also be scrambled by base station according to default HI-RNTI, and such as FFFC is reserved as HI-RNTI.
According to embodiments of the present invention, 1 HI-DCI can carry the ACK/NACK for multiple UE, so the HI-RNTI that multiple UE configuration is identical can be given in base station.
UE sends uplink data frames according to service needed to base station, the then step 110 of base station implementation 100: receive the uplink data frames that UE sends, and carry out error checking and correction to judge that the uplink data frames received the most correctly determines the correct response to UE feedback or wrong responses ACK/NACK information, i.e., in the case of uplink data frames is correct, to UE feeding back ACK information, and in the case of uplink data frames is incorrect, nack message is fed back, in order to UE carries out data re-transmission according to HARQ mechanism to UE.
Base station, after determining response message, will be fed back to UE by HI-DCI, i.e. the step 120 of implementation 100: sends HI-DCI to UE on PDCCH or ePDCCH.According to embodiments of the present invention, HI-DCI can be carried by tradition PDCCH or ePDCCH.Preferably, HI-DCI is carried by ePDCCH, so can do the Inter-Cell Interference Coordination (Inter-CellInterferenceCoordination is called for short ICIC) of frequency domain, solve the problem of inter-cell interference under heterogeneous network.Further, according to embodiments of the present invention, the ePDCCH of carrying HI-DCI can be distributed ePDCCH, so can obtain frequency diversity gain.The ePDCCH of carrying HI-DCI can use diversity mode to launch.
With reference to Fig. 2, as it was previously stated, in order to improve efficiency, HI-DCI includes the response message for multiple UE, i.e. ACK/NACK information.Therefore, in order to allow different UE get respective response message, need to allow UE know the response message of himself location on HI-DCI.According to embodiments of the present invention, each ACK/NACK bit in HI-DCI can regard a HI resource (HIresource) as, by resource locator nHIIdentify.
According to embodiments of the present invention, base station can be according to the default resource locator n for different UEHI, the different bits that the ACK/NACK information being used for different UE are arranged in HI-DCI information, the specific resources for particular UE positions mark nHINeeds are known a priori by, in order to this particular UE can position mark n according to the specific resources for this particular UEHIResponse message is obtained in HI-DCI.
Fig. 4 is the further flow chart of method 100 according to embodiments of the present invention, according to Fig. 4, adding step 104 before step 110: send the second configuration signal to UE, wherein said second configuration signal includes the resource locator n for indicating described ACK/NACK information position in described HI-DCIHI.Preferably, the second configuration signal can be high-level signaling, the most special RRC signaling.Although before step 104 is shown in step 110, but can arranging and send any time before HI-DCI, such as, another kind of scheme according to embodiments of the present invention, it is also possible in a step 102 to UE, send resource locator n together with RNTI information to UEHI
Or, according to embodiments of the present invention, base station can determine the resource locator n for different UE according to predefined ruleHI.In such a case it is not necessary to special notification UE, UE resolves, according to identical predefined rule, the HI-DCI received, in order at this UE specific resource locator nHIThe response message of represented this UE of position acquisition.
Such as, nHICan basisAnd nDMRSDetermining, computing formula is
n HI = ( I PRB _ RA lowest _ index + n DMRS ) mod L bit - - - ( 1 )
n HI = ( I PRB _ RA lowest _ index + n DMRS ) mod L bit - - - ( 2 )
WhereinRepresent minimum Physical Resource Block PRB call number (PhysicalResourceBlockIndex) that PUSCH is used, n when first slot transmissionDMRSRepresent the cyclic shift value (CyclicShit is called for short CS) of the last demodulated reference signal (DemodulationReferenceSignal is called for short DMRS) territory instruction in the ULGrant that described UE sends.When there being ULGrant to dispatch, for the n of first transmission block (TranportBlock is called for short TB)HICalculate employing formula (1), for the n of second transmission blockHICalculate employing formula (2);When there is no ULGrant Schedule retransmission block, if the transmission block number retransmitted is inconsistent with the transmission block number just passed, use formula (1).
In particular cases, for an identical transmission block, if it is indicated that the ULGrant of this transmission block initial transmission uses semi-continuous scheduling Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (Semi-persistentschedulingCellRadioNetworkTemporaryIdenti fiers, it is called for short SPSC-RNTI) ULGrant that scrambles or accidental access response mandate (RandomAccessResponseGrant), follow-up indicate this transmission block without ULGrant transmission time, nDMRSIt is 0, now basisDetermine nHI
Or, according to embodiments of the present invention, when base station is by the HI resource locator n of high-level signaling configuration UEHITime, HI resource locator is then configured by this high-level signaling, when base station is not by the HI resource (n of high-level signaling configuration UEHI) time, HI resource is then determined by predefined rule.
In order to reduce the blind Detecting number of times during UE detection HI-DCI, according to embodiments of the present invention, limit the search volume set of the PDCCH/ePDCCH likely carrying HI-DCI (search volume of HI-DCI be) of HI-DCI.
According to embodiments of the present invention, can limit the search volume of HI-DCI according to default rule, such as, the search volume of HI-DCI can be public search space (CommonSearchSpace, it is called for short CSS), or the subset (i.e. a part in CSS) of CSS.The most such as, the search volume of HI-DCI is fixed in part eCCE in distributed ePDCCH region.It should be noted that CSS mentioned here can be the CSS inside ePDCCH or traditional PDCCH region.
Preferably, according to embodiments of the present invention, high-level signaling is passed through in base station, and such as RRC signaling is the search volume of UE configuration HI-DCI.Specifically can configure the scope (including size and starting point) of search volume, the ePDCCH candidate's number under the polymerization rank of employing and every kind of polymerization rank, at least one in the configuration information such as the order of modulation of employing and the emission mode of employing.Preferably, base station can configure the search volume scope of HI-DCI according to cell load weight and cell channel situation.Such as, the search volume size of HI-DCI can be divided into 4 kinds of configurations, as shown in table 1, when cell load is light and channel conditions is preferable, configuration search volume, base station is configuration 1, otherwise, when cell load weight and channel conditions are bad, it is configuration 4 that base station arranges search volume.
Table 1
AL=2 AL=4 AL=8 PDCCH detects number
Search volume configuration 1 1 1 0 2
Search volume configuration 2 0 1 1 2
Search volume configuration 3 1 1 1 3
Search volume configuration 4 0 2 2 4
Fig. 5 is the schematic flow diagram of further refinement scheme according to embodiments of the present invention, which includes the step of the search volume that base station is UE configuration HI-DCI.As it is shown in figure 5, included step 106 before step 110: sending the 3rd configuration signal to described UE, wherein said 3rd configuration signal includes the HI-DCI search volume configured for described UE.Need exist for explanation, although before step 106 is shown in step 110, but can arrange and send any time before HI-DCI to UE.Preferably, the 3rd configuration signal can be high-level signaling, such as RRC signaling.
Further improvement project, can configure multiple HI-DCI to carry more ACK/NACK bit according to embodiments of the present invention.In such a case, it is possible to scramble for different HI-RNTI differently configured for HI-DCI, or, it is preferable that increasing group character (GroupIdentifier, GI) territory in the HI-DCI structure shown in Fig. 2, GI thresholding is nGI, the number of bits in GI territory can select as required, and such as 2,4 are compared top grade.In this case, for specific UE, base station needs to prenotice the group character n of this particular UE HI-DCI ACK/NACK information residing for corresponding with this particular UEGI.By distributing different HI-RNTI or GI, the configurations such as the UE that channel quality status can be allowed similar uses identical HI-DCI, the most beneficially a modulation coding mode, transmission mode.
Fig. 6 is the flow chart further improved according to embodiments of the present invention.In the embodiment shown in fig. 6, the HI-DCI sent to UE in step 120 can be multiple HI-DCI, and the most each described HI-DCI includes different group character thresholdings nGI.Before step 110, including step 108: sending the 4th configuration signal to described UE, wherein said 4th configuration signal includes described group character thresholding n for described UEGI.Preferably, described 4th configuration signal can be high-level signaling, such as RRC signaling.It should be appreciated by those skilled in the art that step 108 can be implemented in any moment before step 120, such as, in a step 102, send jointly to UE together with RNTI information, the embodiment of the present invention is to this and is not particularly limited.
As an alternative, base station can not also specifically notify group character thresholding n for this UE to UEGI, but distribute n according to default ruleGI, UE finds group character thresholding n when resolving HI-DCIGI, determine whether this HI-DCI is the HI-DCI for this UE also according to described default rule, the most whether this HI-DCI includes the ACK/NACK information for this UE.In this case, such as nGIAccording toAnd/or nDMRSDetermine, determine group character n by following formulaGI:
n GI = I PRB _ RA lowest _ index mod N G , - - - ( 3 )
Or,
nGI=nDMRSmodNG, (4)
Or,
n GI = ( I PRB _ RA lowest _ index + n DMRS ) mod N G - - - ( 5 )
Wherein NGFor maximum supported GI number, it is preferable that NG=2i, i is for being used for representing described group character nGIBit number, the such as N as i=1G=2, and as i=2, NG=4.
As an alternative, increasing GI bit field in ULGrant, base station can send ULGrant to UE, represents described group character n by GI bit fieldGI
According to embodiments of the present invention, data transmission fault is occurring, and when needing to retransmit data, base station can notify UE by the method for above-described embodiment.Another aspect according to embodiments of the present invention, if the base station determine that HI-DCI send response message all ACK time, it is also possible to do not send this HI-DCI to UE, be now not detected by this HI-DCI as UE, i.e. may be considered ACK, thus save the resource overhead of PDCCH further.
Another aspect according to embodiments of the present invention, although ACK or nack message can be sent by said method to UE, but base station still can be in compatible existing mode, such as, ULGrant can be sent to UE, indicated ACK or NACK of the uplink data frames of UE by the NDI in ULGrant, or ACK or NACK can be sent by PHICH to UE.Thus achieve the compatibility that existing response message is sent mechanism.
According to embodiments of the present invention, the ACK/NACK information of the uplink data frames sent for UE is carried in DCI, and feed back to UE on PDCCH, the problem alleviating the PHICH capacity anxiety utilizing traditional approach to be caused to UE feedback response message at PHICH, improve the operational efficiency of system.Additionally, ACK/NACK information is carried on ePDCCH, the ICIC of frequency domain can be carried out, solve the PHICH interference problem under heterogeneous network scene.Furthermore, it is possible to be configured flexibly DCI according to current response message feedback requirements, improve the motility of system configuration, solve PHICH off-capacity problem.
What present invention described above embodiment was conceived to base station side realizes process, illustrates that signal transmission method according to embodiments of the present invention realizes process in UE side below in conjunction with Fig. 7.
Fig. 7 is the schematic flow diagram of signal transmission method 700 according to embodiments of the present invention.As it is shown in fig. 7, method 700 includes:
710: send uplink data frames to base station;
720: at the Physical Downlink Control Channel ePDCCH range searching DCI of physical downlink control channel PDCCH or enhancing, wherein said DCI includes LbitThe response message territory of bit, described LbitThe response message territory of bit carries the correct response for described uplink data frames or wrong responses ACK/NACK information, the L of described base station feedbackbitFor the integer more than 1.
As it has been described above, the PDCCH in method 700 can be tradition PDCCH or ePDCCH, preferably ePDCCH.
As it has been described above, according to embodiments of the present invention, as shown in Figure 8, method 700 farther includes step 702: receiving the first configuration signal that described base station sends, wherein said first configuration signal includes the RNTI information for scrambling described DCI.Although before step 702 is shown in step 710, but UE can be arranged on and receives any time before HI-DCI.
According to embodiments of the present invention, as it is shown in figure 9, method 700 farther includes step 704: obtain the resource locator n for indicating described ACK/NACK information position in described HI-DCIHI.Before although step 704 is shown in step 710, but can be arranged on UE and receive any time before HI-DCI, as it has been described above, UE can also receive resource locator n together with RNTI information in a step 702HI
As it was previously stated, obtain resource locator nHIRealizing especially by three kinds of modes, a kind of is to receive the second control signaling that base station sends, and wherein said second controls signaling includes the described resource locator n for indicating described ACK/NACK information position in described HI-DCIHI.Another way is UE according to predefined rule, determines the described resource locator n of instruction described ACK/NACK information position in described HI-DCI according to above-mentioned formula (1) or (2)HI.Mode three is when base station is by the HI resource (n of high-level signaling configuration UEHI) time, HI resource is then configured by this high-level signaling, when base station is not by the HI resource (n of high-level signaling configuration UEHI) time, HI resource is then determined by predefined rule.
According to embodiments of the present invention, as it has been described above, define the search volume of HI-DCI according to default rule, such as, the search volume of HI-DCI can be public search space (CommonSearchSpace is called for short CSS), or the subset (i.e. a part in CSS) of CSS.The most such as, the search volume of HI-DCI is fixed in part eCCE in distributed ePDCCH region.The rule that UE can preset according to this, searches for HI-DCI, to improve search efficiency on the search volume of the HI-DCI limited.
Preferably, according to embodiments of the present invention, UE, by receiving the signaling that base station sends, obtains the search volume of the HI-DCI that base station is UE configuration.Specifically can configure the scope (including size and starting point) of search volume, the ePDCCH candidate's number under the polymerization rank of employing and every kind of polymerization rank, at least one in the configuration information such as the order of modulation of employing and the emission mode of employing.Preferably, base station can configure the search volume scope of HI-DCI according to cell load weight and cell channel situation.Such as, the search volume size of HI-DCI can be divided into 4 kinds of configurations, as shown in Table 1, when cell load is light and channel conditions is preferable, configuration search volume, base station is configuration 1, otherwise, when cell load weight and channel conditions are bad, it is configuration 4 that base station arranges search volume.
Figure 10 is the schematic flow diagram of further refinement scheme according to embodiments of the present invention, which includes the step that UE obtains the search volume of the HI-DCI that base station is its configuration.As shown in Figure 10, before step 710, step 706 is included: receiving the 3rd configuration signal that described base station sends, wherein said 3rd configuration signal includes HI-DCI search volume.Need exist for explanation, as long as step 706 is before UE search HI-DCI.It addition, as it was previously stated, UE in a step 702, can also receive the search volume of HI-DCI together with RNTI.Preferably, the 3rd configuration signal can be high-level signaling, the most special RRC signaling.
According to embodiments of the present invention, in the case of the multiple HI-DCI of configuration are to carry more ACK/NACK bit, method 700 includes obtaining group character thresholding n for described UEGIAnd according to described group character thresholding nGIDetermine that the HI-DCI that searches is whether for the step of HI-DCI of described UE.As shown in figure 11, the HI-DCI that in step 720, UE searches includes different group character thresholdings nGI.Before step 720, method 700 includes step 712: obtain group character thresholding n for subscriber equipmentGI, after stage 720, method 700 includes step 722: according to group character thresholding n for described subscriber equipment obtainedGIAnd described group character thresholding n in described HI-DCIGI, determine whether described HI-DCI is the HI-DCI for this UE.Specifically, the group character n for subscriber equipment is obtainedGI, can include receiving the 4th configuration signal that described base station sends, wherein said 4th configuration signal includes the described group character n for described UEGI, it is preferable that described 4th configuration signal can be high-level signaling, the most special RRC signaling;Or determine described group character thresholding n for described UE according to formula (3), (4) and (5)GI;Or receiving the ULGrant signaling that described base station sends, wherein said ULGrant signaling includes the described group character n for described UEGI.Although it addition, step 712 is shown in the opinion of step 710 and 720, but UE can be arranged on and receives any time before HI-DCI, as it has been described above, UE can also obtain group character thresholding n for this UE together with RNTI in a step 702GI
According to embodiments of the present invention, data transmission fault is occurring, and when needing to retransmit data, UE can receive, by the method for above-described embodiment, the response message that base station sends.Another aspect according to embodiments of the present invention, if the base station determine that need when all ACK of response message that a HI-DCI sends, it is also possible to do not send HI-DCI to UE, thus save the resource overhead of base station further.From the point of view of UE side, if in the HARQ feedback moment, do not search HI-DCI and be not detected by the ULGrant that instruction retransmits, then it is believed that the response message of the uplink data frames sent to base station is ACK.If it addition, UE searches HI-DCI ULGrant detected again, then determining, according to the NDI in ULGrant, the response message that uplink data frames is corresponding.
Another aspect according to embodiments of the present invention, although response message can be received by said method from base station, but UE still can be in compatible existing mode, such as, UE can receive the ULGrant that base station sends, indicated ACK or NACK of the uplink data frames of UE by the NDI in ULGrant, or UE can receive base station on PHICH and send ACK or NACK.Thus achieve the compatibility that existing response message is sent mechanism.
According to embodiments of the present invention, the ACK/NACK information of the uplink data frames sent for UE is carried in DCI, and feed back to UE on PDCCH, the problem alleviating the PHICH capacity anxiety utilizing traditional approach to be caused to UE feedback response message at PHICH, improve the operational efficiency of system.Additionally, ACK/NACK information is carried on ePDCCH, the ICIC of frequency domain can be carried out, solve the PHICH interference problem under heterogeneous network scene.Furthermore, it is possible to be configured flexibly DCI according to current response message feedback requirements, improve the motility of system configuration, solve PHICH off-capacity problem.
According to embodiments of the present invention, it is also proposed that for realizing base station and the subscriber equipment of said method.
Figure 12 is the schematic configuration diagram of base station according to embodiments of the present invention.Base station shown in Figure 12 can serve as realizing the base station of the inventive method embodiment.As shown in figure 12, base station 1200 includes:
Receive unit 1210, for receiving the uplink data frames that UE sends, and whether receive according to described uplink data frames and correctly determine the correct response fed back to described UE or wrong responses ACK/NACK information;
Transmitting element 1220, includes L for sending Downlink Control Information DCI, wherein said DCI to described UE on the Physical Downlink Control Channel ePDCCH of physical downlink control channel PDCCH or enhancingbitThe response message territory of bit, described LbitThe response message territory of bit carries described ACK/NACK information, LbitFor the integer more than 1.
According to embodiments of the present invention, described transmitting element 1220 is additionally operable to send the first configuration signal to described UE, and wherein said first configuration signal includes the Radio Network Temporary Identifier RNTI information for scrambling described DCI.
According to embodiments of the present invention, described ePDCCH uses diversity mode to launch, and described ePDCCH is distributed ePDCCH.
As shown in figure 13, according to embodiments of the present invention, described transmitting element 1220 is for sending the second configuration signal to described UE, and wherein said second configuration signal includes resource locator nHI, described nHIFor indicating described ACK/NACK information position in described DCI,
Described base station farther includes:
Processing unit 1230, for according to described nHIBy described ACK/NACK information configuration in described DCI by described nHIThe position of instruction.
According to embodiments of the present invention, the formula that processing unit 130 is preset for basis is that described UE determines resource locator nHI, described nHIFor indicating described ACK/NACK information position in described DCI, described processing unit is additionally operable to according to described nHIBy described ACK/NACK information configuration in described DCI by described nHIThe position of instruction, wherein said default formula is::
n HI = ( I PRB _ RA lowest _ index + n DMRS ) mod L bit , Or
n HI = ( I PRB _ RA lowest _ index + 1 + n DMRS ) mod L bit
Wherein nHIRepresent described resource locator thresholding,Represent the minimum Physical Resource Block PRB call number that Physical Uplink Shared Channel PUSCH is used, n when first slot transmissionDMRSRepresent the cyclic shift value of the last demodulated reference signal DMRS territory in the uplink scheduling ULGrant that described UE sends instruction, LbitBit number for the ACK/NACK information that described DCI carries.
According to embodiments of the present invention, the number L of bits of the ACK/NACK information of described DCI carryingbitDetermine according to polymerization rank,
And/or,
Described LbitDCI bit number according to DCI format determines, described DCI format includes at least one DCI format in DCIformat1C, DCIformat1A and DCIformat2C.
According to embodiments of the present invention, described transmitting element 1210 is additionally operable to send the 3rd configuration signal to described UE, and wherein said 3rd configuration signal includes the search volume of the described DCI configured for described UE.
According to embodiments of the present invention, the search volume of described DCI is public search space CSS, or the subset of CSS, or the fractional control channel unit CCE in distributed ePDCCH region.
According to embodiments of the present invention, described DCI includes that group character territory, the thresholding in described group character territory are nGI,
Described transmitting element is additionally operable to send the 4th configuration signal to described UE, and wherein said 4th configuration signal includes described group character thresholding n specifically for described UEGI, described 4th configuration signal is special RRC signaling or ULGrant signaling.
According to embodiments of the present invention, described DCI includes that group character territory, the thresholding in described group character territory are nGI, wherein said processing unit is for determining described n according to following formulaGI,
n GI = I PRB _ RA lowest _ index mod N G , Or
nGI=nDMRSmodNG, or
n GI = ( I PRB _ RA lowest _ index + n DMRS ) mod N G ,
Wherein NGFor maximum supported group character number,Represent the minimum Physical Resource Block PRB call number that Physical Uplink Shared Channel PUSCH is used, n when first slot transmissionDMRSRepresent the cyclic shift value of the last demodulated reference signal DMRS territory in the uplink scheduling ULGrant that described UE sends instruction.
Figure 14 is the schematic configuration diagram of subscriber equipment according to embodiments of the present invention.Subscriber equipment shown in Figure 14 can serve as realizing the subscriber equipment of the inventive method embodiment.As shown in figure 14, subscriber equipment 1400 includes:
Transmitting element 1410, for sending uplink data frames to base station;
Processing unit 1420, for the Physical Downlink Control Channel ePDCCH range searching DCI in physical downlink control channel PDCCH or enhancing, wherein said DCI includes LbitThe response message territory of bit, described LbitThe response message territory of bit carries the correct response for described uplink data frames or wrong responses ACK/NACK information, the L of described base station feedbackbitFor the integer more than 1.
According to embodiments of the present invention, described subscriber equipment farther includes:
Receiving unit 1430, for receiving the first configuration signal that described base station sends, wherein said first configuration signal includes the RNTI information for scrambling described DCI.
According to embodiments of the present invention, described ePDCCH uses diversity mode to launch, and described ePDCCH is distributed ePDCCH.
According to embodiments of the present invention, described reception unit 1430 is additionally operable to receive the second configuration signal that described base station sends, and wherein said second configuration signal includes the resource locator n for indicating described ACK/NACK information position in described DCIHI
According to embodiments of the present invention, described processing unit 1420 is additionally operable to determine the resource locator n for indicating described response message position in described DCI by following formulaHI:
n HI = ( I PRB _ RA lowest _ index + n DMRS ) mod L bit , Or
n HI = ( I PRB _ RA lowest _ index + 1 + n DMRS ) mod L bit
Wherein nHIRepresent described resource locator thresholding,Represent the minimum Physical Resource Block PRB call number that Physical Uplink Shared Channel PUSCH is used, n when first slot transmissionDMRSRepresent the cyclic shift value that the demodulated reference signal DMRS territory in the uplink scheduling ULGrant that the described base station of the last time reception sends indicates, LbitBit number for the ACK/NACK information that described DCI carries.
According to embodiments of the present invention, the number L of bits of the ACK/NACK information of described DCI carryingbitDetermine according to polymerization rank,
And/or
The number L of bits of the ACK/NACK information of described DCI carryingbitDCI bit number according to DCI format determines, described DCI format includes at least one DCI format in DCIformat1C, DCIformat1A and DCIformat2C.
According to embodiments of the present invention, described reception unit 1430 is additionally operable to receive the 3rd configuration signal that described base station sends, and wherein said 3rd configuration signal includes the search volume of described DCI.
According to embodiments of the present invention, described DCI search volume is public search space CSS, or the subset of CSS, or the fractional control channel unit CCE of distributed ePDCCH.
According to embodiments of the present invention, described DCI includes that group character territory, the thresholding in described group character territory are nGI
Described reception unit 1430 is for receiving the 4th configuration signal that described base station sends, and wherein said 4th configuration signal includes described group character thresholding n specifically for described subscriber equipmentGI, described processing unit 1420 is for according to group character thresholding n specifically for described subscriber equipment obtainedGIAnd described group character thresholding n in described DCIGI, determine that described DCI is whether for the DCI of described subscriber equipment.
According to embodiments of the present invention, described DCI includes that group character territory, the thresholding in described group character territory are nGI
Described processing unit is for determining the described group character n specifically for described UE according to following formulaGI,
n GI = I PRB _ RA lowest _ index mod N G , Or
nGI=nDMRSmodNG, or
n GI = ( I PRB _ RA lowest _ index + n DMRS ) mod N G ,
Wherein NGFor maximum supported group character number,Represent the minimum Physical Resource Block PRB call number that Physical Uplink Shared Channel PUSCH is used, n when first slot transmission dataDMRSRepresent the cyclic shift value that the demodulated reference signal DMRS territory in the uplink scheduling ULGrant that the described base station of the last time reception sends indicates,
The most described processing unit 1420 is for according to group character thresholding n specifically for described subscriber equipment obtainedGIAnd described group character thresholding n in described DCIGI, determine that described DCI is whether for the DCI of described subscriber equipment.
Those of ordinary skill in the art are it is to be appreciated that combine the unit of each example and the algorithm steps that the embodiments described herein describes, it is possible to being implemented in combination in of electronic hardware or computer software and electronic hardware.These functions perform with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can use different methods to realize described function to each specifically should being used for, but this realization is it is not considered that beyond the scope of this invention.
Those skilled in the art is it can be understood that arrive, for convenience and simplicity of description, the specific works process of the system of foregoing description, device and unit, it is referred to the corresponding process in preceding method embodiment, does not repeats them here.
In several embodiments provided herein, it should be understood that disclosed system, apparatus and method, can realize by another way.Such as, device embodiment described above is only schematically, such as, the division of described unit, be only a kind of logic function to divide, actual can have when realizing other dividing mode, the most multiple unit or assembly can in conjunction with or be desirably integrated into another system, or some features can ignore, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be the INDIRECT COUPLING by some interfaces, device or unit or communication connection, can be electrical, machinery or other form.
The described unit illustrated as separating component can be or may not be physically separate, and the parts shown as unit can be or may not be physical location, i.e. may be located at a place, or can also be distributed on multiple NE.Some or all of unit therein can be selected according to the actual needs to realize the purpose of the present embodiment scheme.
It addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it is also possible to be that unit is individually physically present, it is also possible to two or more unit are integrated in a unit.
If described function is using the form realization of SFU software functional unit and as independent production marketing or use, can be stored in a computer read/write memory medium.Based on such understanding, part or the part of this technical scheme that prior art is contributed by technical scheme the most in other words can embody with the form of software product, this computer software product is stored in a storage medium, including some instructions with so that a computer equipment (can be personal computer, server, or the network equipment etc.) perform all or part of step of method described in each embodiment of the present invention.And aforesaid storage medium includes: USB flash disk, portable hard drive, read only memory (ROM, Read-OnlyMemory), the various media that can store program code such as random access memory (RAM, RandomAccessMemory), magnetic disc or CD.
The above; being only the detailed description of the invention of the present invention, but protection scope of the present invention is not limited thereto, any those familiar with the art is in the technical scope that the invention discloses; change can be readily occurred in or replace, all should contain within protection scope of the present invention.Therefore, protection scope of the present invention should described be as the criterion with scope of the claims.

Claims (27)

1. a signal transmission method, it is characterised in that described method includes:
Receive the uplink data frames that user equipment (UE) sends, and whether receive according to described uplink data frames and correctly determine the correct response fed back to described UE or wrong responses ACK/NACK information;
The Physical Downlink Control Channel ePDCCH of physical downlink control channel PDCCH or enhancing sends Downlink Control Information DCI, wherein said DCI to described UE and includes LbitThe response message territory of bit, described LbitThe response message territory of bit carries described ACK/NACK information, the number L of bits of the ACK/NACK information of described DCI carryingbitDetermine according to polymerization rank, and/or, the number L of bits of the ACK/NACK information of described DCI carryingbitDCI bit number according to DCI format determines, described DCI format includes at least one DCI format in DCIformat1C, DCIformat1A and DCIformat2C, LbitFor the integer more than 1.
2. the method for claim 1, it is characterised in that farther include:
Sending the first configuration signal to described UE, wherein said first configuration signal includes the Radio Network Temporary Identifier RNTI information for scrambling described DCI.
3. the method for claim 1, it is characterised in that
Described ePDCCH uses diversity mode to launch, and described ePDCCH is distributed ePDCCH.
4. the method for claim 1, it is characterised in that described method farther includes:
Sending the second configuration signal to described UE, wherein said second configuration signal includes resource locator nHI, described nHIFor indicating described ACK/NACK information position in described DCI;
According to described nHIBy described ACK/NACK information configuration in described DCI by described nHIThe position of instruction.
5. the method for claim 1, it is characterised in that described method farther includes:
When base station is by ULGrant dispatching uplink Frame, it is that described UE determines resource locator n according to default formulaHI, described nHIFor indicating described ACK/NACK information position in described DCI;
According to described nHIBy described ACK/NACK information configuration in described DCI by described nHIThe position of instruction,
Wherein said default formula is:
When described response message is response message corresponding to first transmission block, the n of described first transmission blockHICalculate and use formula:
n H I = ( I P R B _ R A l o w e s t _ i n d e x + n D M R S ) mod L b i t ,
When described response message is response message corresponding to second transmission block, the n of described second transmission blockHICalculate and use formula:
n H I = ( I P R B _ R A l o w e s t _ i n d e x + 1 + n D M R S ) mod L b i t
Wherein nHIRepresent described resource locator thresholding,Represent the minimum Physical Resource Block PRB call number that Physical Uplink Shared Channel PUSCH is used, n when first slot transmissionDMRSRepresent the cyclic shift value of the last demodulated reference signal DMRS territory in the uplink scheduling ULGrant that described UE sends instruction, LbitBit number for the ACK/NACK information that described DCI carries.
6. the method for claim 1, it is characterised in that described method also includes:
Sending the 3rd configuration signal to described UE, wherein said 3rd configuration signal includes the search volume of the described DCI configured for described UE.
7. the method for claim 1, it is characterised in that
Described DCI includes that group character territory, the thresholding in described group character territory are nGI,
Described method farther includes:
Sending the 4th configuration signal to described UE, wherein said 4th configuration signal includes described group character thresholding n specifically for described UEGI, described 4th configuration signal is special RRC signaling or ULGrant signaling.
8. the method for claim 1, it is characterised in that
Described DCI includes that group character territory, the thresholding in described group character territory are nGI,
Described method farther includes;
Described n is determined according to default formulaGI, wherein said default formula is:
Or
Or
n G I = ( I P R B _ R A l o w e s t _ i n d e x + n D M R S ) modN G ,
Wherein NGFor maximum supported group character number,Represent the minimum Physical Resource Block PRB call number that Physical Uplink Shared Channel PUSCH is used, n when first slot transmissionDMRSRepresent the cyclic shift value of the last demodulated reference signal DMRS territory in the uplink scheduling ULGrant that described UE sends instruction.
9. the method as according to any one of claim 1 to 8, it is characterised in that
Described LbitThe response message territory of bit includes described ACK/NACK information and emissive power control command.
10. a signal transmission method, it is characterised in that described method includes:
Uplink data frames is sent to base station;
At the Physical Downlink Control Channel ePDCCH range searching DCI of physical downlink control channel PDCCH or enhancing, wherein said DCI includes LbitThe response message territory of bit, described LbitThe response message territory of bit carries the correct response for described uplink data frames or the wrong responses ACK/NACK information of described base station feedback, the number L of bits of the ACK/NACK information of described DCI carryingbitDetermine according to polymerization rank, and/or, the number L of bits of the ACK/NACK information of described DCI carryingbitDCI bit number according to DCI format determines, described DCI format includes at least one DCI format in DCIformat1C, DCIformat1A and DCIformat2C, LbitFor the integer more than 1.
11. methods as claimed in claim 10, it is characterised in that described method farther includes:
Receiving the first configuration signal that described base station sends, wherein said first configuration signal includes the Radio Network Temporary Identifier RNTI information for scrambling described DCI.
12. methods as claimed in claim 10, it is characterised in that
Described ePDCCH uses diversity mode to launch, and described ePDCCH is distributed ePDCCH.
13. methods as claimed in claim 10, it is characterised in that
Receiving the second configuration signal that described base station sends, wherein said second configuration signal includes resource locator nHI, described resource locator nHIFor indicating described ACK/NACK information position in described DCI.
14. methods as claimed in claim 10, it is characterised in that described uplink data frames is dispatched by ULGrant by described base station, and described method farther includes:
Obtain the resource locator n for indicating described ACK/NACK information position in described DCIHI, wherein said nHIDetermining according to default formula, described default formula is:
When described response message is response message corresponding to first transmission block, the n of described first transmission blockHICalculate and use formula:
n H I = ( I P R B _ R A l o w e s t _ i n d e x + n D M R S ) mod L b i t ,
When described response message is response message corresponding to second transmission block, the n of described second transmission blockHICalculate and use formula:
n H I = ( I P R B _ R A l o w e s t _ i n d e x + 1 + n D M R S ) mod L b i t
Wherein nHIRepresent described resource locator,Represent the minimum Physical Resource Block PRB call number that Physical Uplink Shared Channel PUSCH is used, n when first slot transmissionDMRSRepresent the cyclic shift value that the demodulated reference signal DMRS territory in the uplink scheduling ULGrant that the described base station of the last time reception sends indicates, LbitBit number for the ACK/NACK information that described DCI carries.
15. methods as claimed in claim 10, it is characterised in that described method farther includes:
Receiving the 3rd configuration signal that described base station sends, wherein said 3rd configuration signal includes the search volume of described DCI.
16. methods as claimed in claim 10, it is characterised in that described method farther includes
Obtaining the search volume of described DCI, the search volume of described DCI is public search space CSS, or the subset of CSS, or the fractional control channel unit CCE of distributed ePDCCH.
17. methods as claimed in claim 10, it is characterised in that
Described DCI includes that group character territory, the thresholding in described group character territory are nGI
Described method farther includes:
Receiving the 4th configuration signal that described base station sends, wherein said 4th configuration signal includes group character thresholding nGI, described 4th configuration signal is special RRC signaling or ULGrant signaling.
18. methods as claimed in claim 10, it is characterised in that
Described DCI includes that group character territory, the thresholding in described group character territory are nGI,
Described method farther includes:
Obtain thresholding n in described group character territoryGI, wherein said nGIDetermining according to default formula, described default formula is:
Or
Or
n G I = ( I P R B _ R A l o w e s t _ i n d e x + n D M R S ) modN G ,
Wherein NGFor maximum supported group character number,Represent the minimum Physical Resource Block PRB call number that Physical Uplink Shared Channel PUSCH is used, n when first slot transmissionDMRSRepresent the cyclic shift value that the demodulated reference signal DMRS territory in the uplink scheduling ULGrant that the described base station of the last time reception sends indicates.
19. methods as according to any one of claim 11 to 18, it is characterised in that
Described LbitThe response message territory of bit includes described ACK/NACK information and emissive power control command.
20. 1 kinds of base stations, it is characterised in that described base station includes:
Receive unit, for receiving the uplink data frames that user equipment (UE) sends, and whether receive according to described uplink data frames and correctly determine the correct response fed back to described UE or wrong responses ACK/NACK information;
Transmitting element, includes L for sending Downlink Control Information DCI, wherein said DCI to described UE on the Physical Downlink Control Channel ePDCCH of physical downlink control channel PDCCH or enhancingbitThe response message territory of bit, described LbitThe response message territory of bit carries described ACK/NACK information, the number L of bits of the ACK/NACK information of described DCI carryingbitDetermine according to polymerization rank, and/or, the number L of bits of the ACK/NACK information of described DCI carryingbitDCI bit number according to DCI format determines, described DCI format includes at least one DCI format in DCIformat1C, DCIformat1A and DCIformat2C, LbitFor the integer more than 1.
21. base stations as claimed in claim 20, it is characterised in that
Described transmitting element is additionally operable to send the first configuration signal to described UE, and wherein said first configuration signal includes the Radio Network Temporary Identifier RNTI information for scrambling described DCI.
22. base stations as claimed in claim 20, it is characterised in that
Described transmitting element is for sending the second configuration signal to described UE, and wherein said second configuration signal includes resource locator nHI, described nHIFor indicating described ACK/NACK information position in described DCI,
Described base station farther includes:
Processing unit, for according to described nHIBy described ACK/NACK information configuration in described DCI by described nHIThe position of instruction.
23. base stations as claimed in claim 20, it is characterised in that described base station farther includes:
Processing unit, is used for when described base station is by ULGrant dispatching uplink Frame, is that described UE determines resource locator n according to default formulaHI, described nHIFor indicating described ACK/NACK information position in described DCI, described processing unit is additionally operable to according to described nHIBy described ACK/NACK information configuration in described DCI by described nHIThe position of instruction,
Wherein said default formula is:
When described response message is response message corresponding to first transmission block, the n of described first transmission blockHICalculate and use formula:
n H I = ( I P R B _ R A l o w e s t _ i n d e x + n D M R S ) mod L b i t ,
When described response message is response message corresponding to second transmission block, the n of described second transmission blockHICalculate and use formula:
n H I = ( I P R B _ R A l o w e s t _ i n d e x + 1 + n D M R S ) mod L b i t
Wherein nHIRepresent described resource locator,Represent the minimum Physical Resource Block PRB call number that Physical Uplink Shared Channel PUSCH is used, n when first slot transmissionDMRSRepresent the cyclic shift value of the last demodulated reference signal DMRS territory in the uplink scheduling ULGrant that described UE sends instruction, LbitBit number for the ACK/NACK information that described DCI carries.
24. 1 kinds of subscriber equipmenies, it is characterised in that described subscriber equipment includes:
Transmitting element, for sending uplink data frames to base station;
Processing unit, for the Physical Downlink Control Channel ePDCCH range searching DCI in physical downlink control channel PDCCH or enhancing, wherein said DCI includes LbitThe response message territory of bit, described LbitThe response message territory of bit carries the correct response for described uplink data frames or the wrong responses ACK/NACK information of described base station feedback, the number L of bits of the ACK/NACK information of described DCI carryingbitDetermine according to polymerization rank, and/or, the number L of bits of the ACK/NACK information of described DCI carryingbitDCI bit number according to DCI format determines, described DCI format includes at least one DCI format in DCIformat1C, DCIformat1A and DCIformat2C, LbitFor the integer more than 1.
25. subscriber equipmenies as claimed in claim 24, it is characterised in that described subscriber equipment farther includes:
Receiving unit, for receiving the first configuration signal that described base station sends, wherein said first configuration signal includes the Radio Network Temporary Identifier RNTI information for scrambling described DCI.
26. subscriber equipmenies as claimed in claim 24, it is characterised in that described subscriber equipment farther includes:
Receiving unit, for receiving the second configuration signal that described base station sends, wherein said second configuration signal includes resource locator nHI, described resource locator nHIFor indicating described ACK/NACK information position in described DCI.
27. subscriber equipmenies as claimed in claim 24, it is characterised in that described uplink data frames is dispatched by ULGrant by described base station,
The formula that described processing unit is additionally operable to according to presetting determines the resource locator n for indicating described ACK/NACK information position in described DCIHI, described default formula is:
When described response message is response message corresponding to first transmission block, the n of described first transmission blockHICalculate and use formula:
n H I = ( I P R B _ R A l o w e s t _ i n d e x + n D M R S ) mod L b i t ,
When described response message is response message corresponding to second transmission block, the n of described second transmission blockHICalculate and use formula:
n H I = ( I P R B _ R A l o w e s t _ i n d e x + 1 + n D M R S ) mod L b i t
Wherein nHIRepresent described resource locator,Represent the minimum Physical Resource Block PRB call number that Physical Uplink Shared Channel PUSCH is used, n when first slot transmissionDMRSRepresent the cyclic shift value that the demodulated reference signal DMRS territory in the uplink scheduling ULGrant that the described base station of the last time reception sends indicates, LbitBit number for the ACK/NACK information that described DCI carries.
CN201110433208.9A 2011-12-21 2011-12-21 Signal transmission method, base station and subscriber equipment Active CN103178942B (en)

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