CN106059736B

CN106059736B - Send the user equipment and its method of non-periodic detection reference signal

Info

Publication number: CN106059736B
Application number: CN201610542700.2A
Authority: CN
Inventors: 李承旻; 徐翰瞥; 金沂濬; 金学成
Original assignee: LG Electronics Inc
Current assignee: LG Electronics Inc
Priority date: 2010-06-04
Filing date: 2011-06-03
Publication date: 2019-06-14
Anticipated expiration: 2031-06-03
Also published as: KR20110133448A; CN106059736A; KR101868621B1

Abstract

Send the user equipment and its method of non-periodic detection reference signal.Method includes the following steps: receiving information relevant to each configuration of the aperiodicity SRS, wherein, each configuration of the aperiodicity SRS includes at least one of the SRS bandwidth for the aperiodicity SRS, transmission comb and starting Physical Resource Block distribution；Receive the Downlink Control Information DCI format including indicator, the triggering that the indicator instruction aperiodicity SRS is sent；And according to the indicator, the aperiodicity SRS is sent based on the corresponding configuration of the aperiodicity SRS.

Description

Send the user equipment and its method of non-periodic detection reference signal

The application is that application No. is the application for a patent for invention of 201180027587.X (international application no: PCT/ for original bill KR2011/004088, the applying date: on 06 03rd, 2011, denomination of invention: the uplink that control detection reference signal is sent sent function The method and user equipment of rate) divisional application.

Technical field

The present invention relates to wireless communication systems, are touched more particularly, to a kind of user equipment (UE) based on aperiodicity SRS It sends out and sends the method for detection reference signal (SRS) and uplink transmission power that a kind of UE control aperiodicity SRS is sent Method.

Background technique

Although wireless communication technique has developed into the LTE based on wideband code division multiple access (WCDMA), user and service The demand of provider and expectation are still increasing.Since the exploitation of other wireless access technologys is also carrying out, new technology is drilled Into the competitiveness for needing to realize future.Such new technology requires to reduce every cost, promotes service availability, flexible service band And and open interface simple with structure and UE power consumption appropriate.

Recently, the standardization of the subsequent evolution of LTE is being carried out in 3 gpp.In the present specification, by the subsequent evolution Referred to as " advanced LTE " or " LTE-A ".The difference of lte-a system and LTE system includes drawing for system bandwidth and repeater Enter.Lte-a system is intended to the broadband for supporting to be up to 100MHz.Lte-a system is polymerize using carrier wave or aggregated bandwidth technology is come in fact Now use the broadband of multiple frequency chunks.In carrier aggregation technology, by multiple frequency chunks be used as big logic frequency band so as to Use broader frequency band.The bandwidth of each frequency chunks can be defined based on the bandwidth of system block used in LTE system.It uses Component carrier sends each frequency chunks.

In order to guarantee accurate uplink channel estimation, 3GPP-LTE-A system is in addition to supporting conventional periodical SRS to send Except, also support aperiodicity SRS is sent.The uplink for needing aperiodicity SRS configuration information and aperiodicity SRS to send is sent Power control come support aperiodicity SRS send.However, not yet proposing detailed aperiodicity SRS configuration information and control so far The method for the uplink transmission power that aperiodicity SRS processed is sent.

Summary of the invention

Technical problem

It is an object of the present invention to provide a kind of user equipment (UE) to be touched based on non-periodic detection reference signal (SRS) The method sent out and send SRS.

It is a further object of the present invention to provide a kind of methods of UE control aperiodicity SRS uplink transmission power sent.

It is yet another object of the invention to provide a kind of UE for being triggered and being sent aperiodicity SRS based on aperiodicity SRS.

Another object of the present invention is to provide a kind of UE of uplink transmission power that control aperiodicity SRS is sent.

The purpose of the present invention is without being limited thereto, and those skilled in the art according to the following description it can be clearly understood that its Its purpose.

Technical solution

To achieve the above object, a kind of transmission base at user equipment (UE) in a wireless communication system according to the present invention In the method for the aperiodicity SRS of detection reference signal (SRS) triggering, this method can include: receive multiple non-weeks from eNodeB Phase property SRS configuration information；Aperiodicity SRS, which is received, from the eNodeB sends triggering indicator；It is described aperiodic based on receiving Property SRS send triggering indicator subframe index, receive the aperiodicity SRS and send the subframe of triggering indicator and corresponding Aperiodicity SRS send time relationship between subframe, at least one of uplink channel status, from multiple aperiodicity Specific aperiodicity SRS configuration information is selected in SRS configuration information；Aperiodicity SRS configuration information based on selection is sent Aperiodicity SRS associated with aperiodicity SRS transmission triggering indicator, wherein the multiple aperiodicity SRS matches Confidence breath includes about for sending the resource for triggering indicator and sending aperiodicity SRS in response to the aperiodicity SRS Information.It herein, can be by as pre-configuration when receiving the aperiodicity SRS transmission triggering indicator in subframe n Periodical SRS send subframe in be located at the subframe n after earliest subframe the first aperiodicity SRS send subframe come The aperiodicity SRS is sent, or when receiving the aperiodicity SRS transmission triggering indicator in the subframe n, Second that the earliest subframe after being located at subframe n+3 in subframe can be sent by the periodical SRS as pre-configuration is aperiodic Property SRS send subframe and send the aperiodicity SRS.

When receiving the aperiodicity SRS to send the index n of the subframe of triggering indicator is even number, aperiodicity SRS Transmission may include by the partial-band on the frequency axis of the first aperiodicity SRS subframe or the second aperiodicity SRS subframe come Send the aperiodicity SRS.Herein, correspond to described in aperiodicity SRS transmission triggering indicator when for sending When the transmission underpower of aperiodicity SRS, rollback (fallback) non-week predefined in the partial-band can be passed through Phase property SRS resource sends the aperiodicity SRS.

On the other hand, non-when receiving the aperiodicity SRS to send the index n of the subframe of triggering indicator is odd number Periodical SRS transmission may include by complete on the frequency axis of the first aperiodicity SRS subframe or the second aperiodicity SRS subframe Frequency band sends the aperiodicity SRS.Herein, when for sending corresponding to aperiodicity SRS transmission triggering indicator The aperiodicity SRS transmission underpower when, rollback aperiodicity SRS predefined in the Whole frequency band can be passed through Resource sends the aperiodicity SRS.

In addition, sending the subframe n of triggering indicator and at least one week for distributing to UE when receiving the aperiodicity SRS When phase property SRS sends the time difference between subframe corresponding to 4 subframes, first can be selected from multiple aperiodicity SRS configuration Periodical SRS configuration, and can be configured according to the first aperiodicity SRS described non-by the transmission of the first aperiodicity SRS subframe Periodical SRS.Herein, the non-week can be sent by the Whole frequency band on the frequency axis of the first aperiodicity SRS subframe Phase property SRS.

On the other hand, when the reception aperiodicity SRS sends the subframe n of triggering indicator and distributes at least the one of UE When a periodicity SRS sends the time difference between subframe and do not correspond to 4 subframes, selected from multiple aperiodicity SRS configuration Secondary periodicity SRS configuration is selected, and institute is sent by the second aperiodicity SRS subframe according to the second aperiodicity SRS configuration State aperiodicity SRS.In addition, can be by the partial-band on the frequency axis of the second aperiodicity SRS subframe to send State aperiodicity SRS.

When the uplink channel status is poorer than predefined channel status, can be selected from multiple aperiodicity SRS configuration The second aperiodicity SRS configuration is selected, and the second aperiodicity SRS subframe is passed through according to the second aperiodicity SRS configuration Or first aperiodicity SRS subframe frequency axis on partial-band send the aperiodicity SRS.

It on the other hand, can be from multiple aperiodicity SRS when the uplink channel status is better than predefined channel status It selects the second aperiodicity SRS to configure in configuration, and can be configured according to the first aperiodicity SRS aperiodic by second Whole frequency band on the frequency axis of property SRS subframe or the first aperiodicity SRS subframe sends the aperiodicity SRS.

To achieve the above object, one kind of embodiment according to the present invention is in a wireless communication system in user equipment (UE) method of the control for non-periodic detection reference signal (SRS) uplink transmission power sent, this method at can include: The power offset values sent for aperiodicity SRS are received from eNodeB；Use the power sent for aperiodicity SRS Deviant determines aperiodicity SRS transmission power value；Aperiodicity is sent using latent-growth sequency SRS transmission power value SRS.Be only used for the power offset values that the aperiodicity SRS is sent can be it is specific by the received UE of high-level signaling Value.In addition, this method, which may also include from the eNodeB, receives aperiodicity SRS transmission triggering indicator, wherein can be according to institute It states aperiodicity SRS and sends the triggering indicator progress aperiodicity SRS transmission.

To achieve the above object, one kind of another embodiment according to the present invention is set in user in a wireless communication system Method of the control for non-periodic detection reference signal (SRS) uplink transmission power sent, this method can wrap at standby (UE) It includes: receiving the power excursion for periodicity SRS the power offset values sent and sending for aperiodicity SRS from eNodeB Value；Aperiodicity SRS, which is received, from the eNodeB sends triggering indicator；Triggering instruction is sent according to the aperiodicity SRS Symbol determines the transmission function sent for the aperiodicity SRS using the power offset values sent for aperiodicity SRS Rate value.

To achieve the above object, a kind of user sending SRS based on non-periodic detection reference signal (SRS) triggering sets It is standby, the user equipment can include: receiver is configured to receive aperiodicity SRS from eNodeB and sends triggering indicator and more A aperiodicity SRS configuration information；Processor is configured to receive the son that the aperiodicity SRS sends triggering indicator The index of frame, receive the aperiodicity SRS send the subframe of triggering indicator and corresponding aperiodicity SRS transmission subframe it Between time relationship, at least one of uplink channel status, selected from multiple aperiodicity SRS configuration informations specific non- Periodical SRS configuration information；Transmitter, be configured to selection aperiodicity SRS configuration information send with it is described aperiodic Property SRS send the triggering associated aperiodicity SRS of indicator, wherein the multiple aperiodicity SRS configuration information may include Information about the resource for sending aperiodicity SRS for sending triggering indicator in response to the aperiodicity SRS.

To achieve the above object, a kind of control in a wireless communication system according to the present invention is for aperiodicity detection ginseng Examine signal (SRS) transmission uplink transmission power user equipment, the user equipment can include: receiver, be configured to from ENodeB receives the power offset values sent for aperiodicity SRS；Processor is configured so that described for aperiodicity The power offset values that SRS is sent determine aperiodicity SRS transmission power value；Transmitter is configured so that latent-growth sequency SRS transmission power value sends aperiodicity SRS.

Beneficial effect

According to the present invention, UE is configured according to aperiodicity SRS and is sent aperiodicity SRS, to realize more accurate uplink Channel estimation.In addition, index, reception aperiodicity SRS of the UE based on the subframe for receiving aperiodicity SRS transmission triggering indicator In time relationship, uplink channel status between the subframe and corresponding aperiodicity SRS transmission subframe of transmission triggering indicator At least one, specific aperiodicity SRS configuration information is selected from multiple aperiodicity SRS configuration informations, to improve Communication performance.

In addition, this method can not only be conducive to more accurately estimate uplink channel status, moreover it is possible to by adaptive aperiodic Property SRS configuration switching and efficiently against the uplink signal of SRS covering problem and the total channel HetNet of same channel interference ask Topic.

In addition, the uplink power control equation that aperiodicity SRS proposed by the present invention can be used to send is aperiodic to determine Property SRS send power, and send aperiodicity SRS using determining power.

Advantages of the present invention is without being limited thereto, and those skilled in the art according to the following description it can be clearly understood that its Its advantage.

Detailed description of the invention

Attached drawing be included to provide a further understanding of the present invention, it illustrates embodiments of the present invention and with description It is common to explain the principle of the present invention.Wherein:

Fig. 1 is to show the block diagram of the configuration of eNodeB and UE in wireless communication system according to the present invention.

Fig. 2 shows the structures of radio frames used in the 3GPP LTE system as example mobile communication system.

Fig. 3 (a) -3 (b) shows downlink subframe in the 3GPP LTE system as example mobile communication system and upper The structure of row subframe.

Fig. 4 shows down time-frequency resource grid structure used in the present invention.

Fig. 5 shows the configuration of common MIMO communication system.

Fig. 6 is shown from N_TChannel of a transmission antenna to receiving antenna i.

Fig. 7 (a) -7 (b) shows the reference signal mould in the 3GPP LTE system as example mobile communication system Formula, reference signal mode when wherein Fig. 7 (a) is shown using conventional cyclic prefix (CP), and Fig. 7 (b) is shown using expansion Open up reference signal mode when CP.

Fig. 8 shows the exemplary upstream sub-frame configuration including SRS symbol.

Fig. 9 a-9b is shown for the cell specific period SRS illustrative sub-frame sent and for UE specific period Property SRS send illustrative sub-frame.

Figure 10 a, 10b, 10c, which are shown, utilizes the subframe non-week corresponding with transmission for receiving aperiodicity SRS triggering authorization Time relationship between the subframe of phase property SRS and the exemplary operation that multiple SRS configurations are adaptive selected.

Figure 11 is shown according to different base applications son corresponding with the time point that aperiodicity SRS triggers authorization arrival The aperiodicity SRS operation executed when the classification of the index of frame.

Figure 12 a-12b shows the exemplary aperiodicity SRS subframe of SRS configuration.

Figure 13 is shown to be configured and figure according to the aperiodicity SRS at the UE time point for receiving aperiodicity SRS triggering authorization Switching between the aperiodicity SRS configuration of 12a-12b.

Figure 14 a-14b shows rollback aperiodicity SRS transmission.

Figure 15 a-15c shows when distributing the specific SRS resource of cell (subframe) with the interval 2ms that reuse cell specific SRS resource is used for the method that effective aperiodicity SRS is sent.

Figure 16 shows the configuration of UE specific period SRS subframe.

Figure 17 a-17c, which is shown, utilizes the subframe aperiodicity corresponding with transmission for receiving aperiodicity SRS triggering authorization Time relationship between the subframe of SRS is dynamically selected the operation of multiple SRS configurations.

Figure 18 is shown according to different base applications son corresponding with the time point for receiving aperiodicity SRS triggering authorization The aperiodicity SRS executed when the classification of the index of frame is sent.

Figure 19 a-19b shows the exemplary aperiodicity SRS subframe of SRS configuration.

Figure 20 shows the aperiodicity SRS configuration operation that the time point of aperiodicity SRS triggering authorization is received according to UE With the switching between the configuration of SRS shown in Figure 19 a-19b.

Figure 21 a-21b shows according to the part for being wherein assigned with aperiodicity SRS transmission resource and is used as retracting The aperiodicity SRS that aperiodicity SRS sends new departure of resource is sent.

Specific embodiment

Hereinafter reference will be made to the drawings, and preferred embodiments of the present invention will be described.It should be appreciated that disclosing with reference to the accompanying drawings Specific descriptions be intended to describe exemplary embodiments of the present invention, and non-depicted be able to achieve unique embodiment of the invention. Below specifically describe includes detailed content, is fully understood with providing to of the invention.However, for those skilled in the art and Speech is it is readily apparent that the present invention is also able to achieve without the detailed content.For example, will be the third generation based on mobile communication system The hypothesis of partner program (3GPP) long term evolution (LTE) system is described below, but it is suitable for is not wrapped Include only substantial other mobile communication system of 3GPP LTE system.

In some instances, well known structure and equipment is omitted, to avoid making idea of the invention fuzzy, and this The critical function of a little structures and equipment is shown in block diagram form.It will make to be presented with like reference characters always in the accompanying drawings identical Or similar component.The illustrative embodiments of this specification will not be better than other embodiment in any way.

In the following description, it is assumed that terminal includes mobile or fixed ustomer premises access equipment, such as user equipment (UE), movement station (MS) and advanced mobile station (AMS), and base station includes the network end node communicated with terminal, such as Node-B, eNode B, base station and access point (AP).

In mobile communication system, UE or relay node, which can be received by downlink/backhaul downlink from base station, believes Breath, and information is sent by uplink/backhaul uplink.The information that UE or relay node send or receive include data and Various control information, and there are various physics to believe for the type of the information sent or received according to UE or relay node and purposes Road.

Although for simplicity showing the wireless communication system including an eNB, UE and relay node, But wireless communication system 200 may include more than one eNB, more than one relay node and/or more than one UE.In other words, Base station includes various eNB, such as macro eNB, femto eNB, and UE includes various UE, such as macro UE and femto UE.

Fig. 1 is to show the block diagram of the configuration of communication system according to the present invention.

Communication system according to the present invention may include eNB 100, relay node 150, UE 80 and network (not shown).Though The communication system including 100, a relay nodes 200 and a UE 300 of an eNB is for simplicity so shown, but Communication system according to the present invention may include multiple eNB, multiple relay nodes and multiple UE.

Referring to Fig.1, eNB 100 may include sending (Tx) data processor 105, Symbol modulator 110, transmitter 115, hair Give/receiving antenna 120, processor 125, memory 130, receiver 135, symbol demodulator 140 and receive (Rx) data at Manage device 145.Relay node 150 may include Tx data processor 155, Symbol modulator 160, transmitter 165, transmission/reception day Line 170, processor 175, memory 176, receiver 177, symbol demodulator 178 and Rx data processor 179.In addition, UE 180 may include Tx data processor 182, Symbol modulator 184, transmitter 186, send/receive antenna 188, processor 190, Memory 192, receiver 194, symbol demodulator 196 and Rx data processor 198.

Although in eNB 100, relay node 150 or UE 180 only including an antenna 120,170 or 188, eNB 100, it may also comprise mutiple antennas in relay node 150 or UE 180.Therefore, eNB 100 according to the present invention, relay node 150 and UE 180 supports multiple-input and multiple-output (MIMO).ENB 100, relay node 150 and UE 180 according to the present invention both may be used It supports single user (SU)-MIMO, can also support multi-user (MU)-MIMO.

In the downlink, eNB 100 Tx data processor 105 receive data on flows, to received data on flows into Formatting lines and coding are interleaved and modulate (or symbol mapping) to the data on flows of coding, and provide the symbol (number of modulation According to symbol).Symbol modulator 110 receives and processes data symbol and frequency pilot sign, to provide symbol stream.The symbol of eNB 100 Number modulator 110 is multiplexed data and frequency pilot sign, and sends transmitter 115 for the data of multiplexing.At this point, each hair The symbol sent can be data symbol, frequency pilot sign or zero (sky) signal value.In each symbol period, it can continuously send and lead Frequency symbol.Frequency pilot sign can be frequency division multiplexing (FDM) symbol, orthogonal frequency division multiplexing (OFDM) symbol, time division multiplexing (TDM) symbol Or code division multiplexing (CDM) symbol.The transmitter 115 of eNB 100 receives symbol stream, and symbol stream is converted to more than one simulation and is believed Number, additionally adjustment (such as amplification, filtering, frequency upooaversion) analog signal, and generate and be suitable for sending by wireless channel Downlink signal.Then, relay node 150 and/or UE 180 are sent for downlink signal by antenna 120.

The receiving antenna 170 of relay node 150 receives downlink signal from eNB 100 and/or receives uplink letter from UE 180 Number, and received signal is supplied to receiver 177.The adjustment of receiver 177 (such as converting under filtering, amplification and frequency) receives Signal, signal adjusted is digitized, and collecting sample.Symbol demodulator 178 carries out received frequency pilot sign Demodulation, and the symbol of demodulation is supplied to processor 175, it is used for channel estimation.

The processor 175 of relay node 150 can be carried out to from eNB 100 and/or the received downlink of UE 180/uplink signal Demodulation processing, and send signal to UE 180 and/or eNB 100.

In UE 180, antenna 188 receives downlink signal from eNB 100 and/or relay node 150, and by received letter Number it is supplied to receiver 194.The adjustment of receiver 194 (such as being converted under filtering, amplification and frequency) received signal, after adjustment Signal digitized, and collecting sample.Symbol demodulator 198 demodulates received frequency pilot sign, and pilot tone is accorded with Number it is supplied to processor 190, is used for channel estimation.

Symbol demodulator 196 receives the frequency response estimated value of downlink from processor 190, for received data symbols Number data demodulation is carried out, obtains data symbol estim (it be the estimated value of the data symbol of transmission), and data symbol is estimated Evaluation is supplied to Rx data processor 198.Rx data processor 150 demodulates data symbol estim, and (i.e. symbolic solution reflects Penetrate), deinterleaving and decoding, and restore send data on flows.

The processing and the Symbol modulator 110 and Tx of eNB 100 that symbol demodulator 196 and Rx data processor 198 carry out The processing that data processor 105 carries out is complementary.

In UE 180, Tx data processor 182 handles data on flows, and provides data symbols in the uplink Number.Symbol modulator 184 receives data symbol, and data symbol and frequency pilot sign are multiplexed, and executes and modulates and mention to transmitter 186 For symbol stream.Transmitter 186 receives and processes symbol stream, generates uplink signal, and send uplink signal to by antenna 135 ENB 100 or relay node 150.

In eNB 100, uplink signal is received from UE 100 and/or relay node 150 by antenna 130.Receiver 190 Handle received uplink signal and collecting sample.Then, symbol demodulator 195 handles sample, and provides and connect in the uplink The frequency pilot sign and data symbol estim of receipts.Rx data processor 197 handles data symbol estim, and restores from UE 180 And/or the data on flows that relay node 150 is sent.

ENB 100, relay node 150, everywhere in UE 180 reason device 125,175,190 respectively to eNB 100, relay node 150, the operation of UE 180 is indicated (such as control, adjustment or management).Processor 125,175,190 can with memory 130, 176,192 connection, to store program code and data respectively.Memory 130,176,192 respectively with processor 125,175,190 Connection, with storage program area, application program and general file.

Processor 125,175,190 can be described as controller, microcontroller, microprocessor, microcomputer etc..Processor 125, it 175,190 can be realized by hardware, firmware, software or combinations thereof.If embodiments of the present invention are located by hardware realization It may include specific integrated circuit (ASIC), digital signal processor (DSP), Digital Signal Processing dress in reason device 125,175,190 Set (DSPD), programmable logic device (PLD), field programmable gate array (FPGA) etc..

If embodiments of the present invention are realized by firmware or software, firmware or software can be configured to include for executing Functions or operations module of the invention, program, function etc..It is configured to execute firmware or software of the invention to may include in processor 125, it in 175,190, or is stored in memory 130,176,192 to be driven by processor 125,175,190.

Three low-level layers of known open system interconnection (OSI) model based on communication system, can be by wireless communication system The layer of Radio interface protocols in (network) between eNB 100, relay node 150 and UE 180 is divided into first layer (L1), Two layers (L2) and third layer (L3).Physical layer belongs to first layer and provides information transmission service by physical channel.Radio resource Control (RRC) layer belongs to third layer and provides the control radio resource between UE 180 and network.ENB 100, relay node 150, network and rrc layer are exchanged with each other RRC information to UE 180 by wireless communication.

Fig. 2 shows exemplary third generation cooperative partner program (3GPP) long term evolutions as mobile communication system (LTE) structure of the radio frames in system.

Referring to Fig. 2, radio frames include 10 subframes.Subframe includes 2 time slots in time domain.For sending 1 subframe Timing definition is transmission time interval (TTI).For example, the length of 1 subframe can be 1 millisecond (ms), and the length of 1 time slot can For 0.5ms.1 time slot includes multiple orthogonal frequency division multiplexing (OFDM) symbol in time domain.Since 3GPP LTE is in downlink It is middle to use OFDMA, therefore OFDM symbol is for indicating 1 symbol period.OFDM symbol is alternatively referred to as SC-FDMA symbol or symbol Period.Resource block (RB) is resource allocation unit, and including multiple continuous subcarriers in 1 time slot.Merely for exemplary purposes The structure for showing radio frames.Therefore, the sub-frame number for including in radio frames can be changed by various modes, include in subframe The OFDM symbol quantity for including in number of timeslots or time slot.

Fig. 3 shows the structure of downlink subframe and sub-frame of uplink in 3GPP LTE system.

Referring to Fig. 3 (a), most three OFDM symbols of the front of the first time slot in subframe correspond to and will be divided Control area with control channel.Remaining OFDM symbol corresponds to the number that will be assigned Physical Downlink Shared Channel (PDSCH) According to region.The example of down control channel in 3GPP LTE is for example including physical control format indicator channel (PCFICH), Physical Downlink Control Channel (PDCCH), Physical Hybrid ARQ Indicator channel (PHICH) etc..PCFICH is in subframe The first OFDM symbol at sent and carried the OFDM symbol for sending control channel in subframe quantity related letter Breath.PHICH is the response that uplink is sent and carries HARQ and confirm (ACK)/deny (NACK) signal.The control sent by PDCCH Information processed is known as Downlink Control Information (DCI).DCI includes upstream or downstream scheduling information, or includes for the upper of any UE group Row sends (Tx) power control command.

The PDCCH as down physical channel will now be described.

PDCCH can carry the resource allocation and transformat (referred to as downstream grants), the resource allocation of PUSCH of PDSCH Information (referred to as uplink authorization), the transmission power control command for each UE in any UE group, internet voice (VoIP) Activation etc..Multiple PDCCH can be sent in control area, and UE can monitor multiple PDCCH.PDCCH is connected by one or more The polymerization of continuous control channel unit (CCE) is constituted.It can be passed through by the PDCCH that the polymerization of one or more continuous CCE is constituted It is sent on control area after sub-block interleaving treatment.CCE be assignment of logical unit, for according to radio channel state to PDCCH provides encoding rate.CCE corresponds to multiple resource element groups.Between the encoding rate provided according to the quantity of CCE and CCE Incidence relation determines the format of PDCCH and can use the digit of PDCCH.

It is known as Downlink Control Information (DCI) by the control information that PDCCH is sent.The following table shows according to DCI format DCI。

[table 1]

DCI format 0 indicates that ascending resource distributes information.DCI format 1-2 indicates that downlink resource distributes information.DCI format 3, 3A indicates uplink transmission power control (TPC) order for any UE group.

It is described more fully below and BS is made to send the method for executing resource impact for PDCCH in 3GPP LTE system.

In general, BS can send Scheduling assistance information and other control information by PDCCH.About physical control channel (PCCH) information configuration is at a polymerization or the form of several CCE, thus using gained information as a polymerization or several CCE It is sent.In other words, it is CCE that the PDCCH of BS, which sends unit,.1 CCE includes 9 resource element groups (REG).Both do not divided It is also unallocated to physical mixed automatic repeat request indicator channel to be fitted on physical control format indicator channel (PCFICH) (PHICH) quantity of RBG is N_REG.For system, from 0 to N_CCE- 1 CCE is available (wherein)。 PDCCH supports multiple format shown in following table 3.By starting from, with " i mod n=0 ", (wherein " i " is CCE to 1 PDCCH Number) the continuous CCE of n of CCE constitute.Multiple PDCCH can be sent by 1 subframe.

[table 2]

PDCCH format	The quantity of CCE	The quantity of resource element groups	PDCCH digit
				0	1	9	72
1	2	18	144
				2	4	36	288
3	8	72	576

Referring to table 2, base station (BS) can send control information according to BS and how many region is needed to determine PDCCH format.UE with CCE is that unit reads control information etc., to reduce expense.Equally, relay node (RN) can also be with relaying-CCE (R-CCE) Control information etc. is read for unit.In lte-a system, in order to enable BS sends R-PDCCH information for any RN, it can be with Relaying-control channel unit (R-CCE) is unit to map resource element (RE).

Referring to Fig. 3 (b), sub-frame of uplink can be divided into control area and data area on frequency domain.It is distributed to control area For carrying the Physical Uplink Control Channel (PUCCH) of ascending control information.It distributes to data area for carrying user data Physical Uplink Shared Channel (PUSCH).In order to maintain single-carrier property, a UE will not send PUCCH and PUSCH simultaneously. The RB pairs PUCCH for being used for a UE is assigned in subframe.Belong to RB couples of RB occupied in two time slots respectively it is different Subcarrier.To in boundary of time slot frequency hopping occurs for the RB that such case is known as being assigned to PUCCH.

Fig. 4 shows down time-frequency resource grid structure according to the present invention.

Referring to Fig. 4, with havingA subcarrier andThe resource grid description of a OFDM symbol is each The signal sent in time slot.Herein,Indicate the quantity of the resource block (RB) for downlink,It indicates to constitute RB Subcarrier quantity, andIndicate the quantity of OFDM symbol in descending time slot.QuantityDepending on being configured in cell Downstream transmission bandwidth, and should meetWhereinWithIt is minimum respectively Downlink bandwidth and maximum downstream bandwidth, but it is not limited to these values.Herein,Under the minimum supported for wireless communication system Row bandwidth,The maximum downstream bandwidth supported for wireless communication system.The quantity of OFDM symbol depends on following in time slot Ring prefix (CP) length and subcarrier spacing.In the case where multiple antennas is sent, a resource can be defined for each antenna port Grid.

It is known as resource element for each element in the resource grid of antenna port p, and by the index pair in time slot (k, l) is uniquely identified, wherein k=0 ...,And l=0 ...,It is in frequency domain and time domain respectively Index.

Resource block shown in Fig. 4 is for describing the mapping of particular physical channel to resource element.RB points are Physical Resource Block (PRB) and virtual resource blocks (VRB).

Physical Resource Block is defined as in time domainIn a continuous OFDM symbol and frequency domainA continuous sub- load Wave, whereinWithIt can be provided by table 3.Therefore, Physical Resource Block byA resource element is constituted, right Should be in the 180kHz on 1 time slot and frequency domain in time domain, but it is not limited to these values.

[table 3]

Number of the Physical Resource Block on frequency domain is 0 to arriveThe money in physical resource block number and time slot on frequency domain Relationship between source element (k, l) is

VRB can have size identical with PRB.Two kinds of VRB is defined, the first is centralization, is for second Distributing.For every kind of VRB type, a pair of of VRB shares VRB index (can be described as " VRB number " below) and in a son It is allocated on two time slots of frame.In other words, belong to first time slot in two time slots for constituting a subframeA VRB is assigned 0 and arrivesIn any index, and belong to second time slot in two time slots A VRB is equally assigned 0 and arrivesIn any index.

General MIMO technology explained below.MIMO technology is the abbreviation of MIMO technique.MIMO technology uses It is multiple to send (Tx) antenna and multiple reception (Rx) antennas to improve the efficiency of Tx/Rx data, and original routine techniques is general (Tx) antenna and single reception (Rx) antenna are sent using single.In other words, MIMO technology allows the hair of wireless communication system Sending end or receiving end use mutiple antennas (hereinafter referred to as multiple antennas), so as to improve ability or performance.For ease of description, Term " MIMO " can be considered as multi-antenna technology.

More specifically, MIMO technology receives single total message independent of individual antenna path, collect via several days The received multiple data slices of line, and complete total data.As a result, MIMO technology can increase data transfer rate in particular range, Or system scope can be increased with specific data transfer rate.

Next generation mobile communication technical requirements data transfer rate more higher than normal mobile communication technology, thus it is effective MIMO technology is expected to become the essential content of next generation mobile communication technology.Under this assumption, the MIMO communication technology is to incite somebody to action It is applied to the next generation mobile communication technology of mobile communication terminal or repeater, and data communication range can be expanded, so as to Overcome the restricted data conveying capacity of other mobile communication system as caused by various limiting situations.

Meanwhile in the various technologies that can be improved data-transmission efficiency, MIMO technology can greatly improve communication capacity With Tx/Rx performance, without the additional frequency of distribution or increase additional power.Due to these technical advantages, most of companies Or this MIMO technology is paid close attention in exploitation commercial city.

Fig. 5 shows the example of common multi-antenna communication.

Referring to Fig. 5, increase to N if sending the quantity of (Tx) antenna_T, while the quantity for receiving (Rx) antenna increases to N_R, Then the theoretical channel transmission capability of MIMO communication system and antenna amount proportionally increase (with only a transmitter or reception Device is different using the above situation of several antennas), so as to greatly improve transfer rate and spectrum efficiency.

In this case, it is equal to when using individual antenna by increasing the transfer rate that channel transfer capability obtains Maximum transfer rate (the R of acquisition_o) and rate increment (R_i) product, can theoretically increase.Rate increment (R_i) can be with below Equation 1 indicates:

[equation 1]

R_i=min (N_T,N_R)

The mathematical modeling of the communication means used in above-mentioned mimo system is described more fully below.Firstly, can from Fig. 2-6 Know, it is assumed that there are N_TA Tx antenna and N_RA Rx antenna.For transmission (Tx) signal, N is being used_TIn the case where a Tx antenna, hair Deliver letters breath maximum item number be N_T, thus Tx signal can the specific vector as shown in following equation 2 indicate:

[equation 2]

Meanwhile each item sends information (s₁,s₂,…,s_NT) there can be different transmission power.In this case, if Each transmission power is by (P₁,P₂,…,P_NT) indicate, then it can be by following etc. with the transmission information adjusted for sending power Specific vector shown in formula 3 indicates:

[equation 3]

In equation 3,For the diagonal matrix for sending power, can be indicated by following equation 4:

[equation 4]

Meanwhile with the dope vector adjusted for sending powerIt is multiplied with weight matrix (W), to configure N_TA reality Transmission to be sent (Tx) signal (x on border₁,x₂,…,x_NT).In this case, weight matrix is suitable for according to Tx channel conditions Tx information is correctly distributed to each antenna.Above-mentioned Tx signal (x₁,x₂,…,x_NT) using vector (x) by following equation 5 It indicates:

[equation 5]

In equation 5, w_ijFor the weight between i-th of Tx antenna and j-th strip Tx information, W is instruction weight w_ijSquare Battle array.Matrix W is known as weight matrix or pre-coding matrix.Meanwhile above-mentioned Tx signal can be considered in different ways according to two kinds of situations (x), that is, the second situation of the first situation and use space multiplexing of use space diversity.In the feelings of use space multiplexing Under condition, unlike signal be multiplexed and sends destination for multiplexed signal, so that the element of dope vector (s) has Different values.

In addition, repeating to send same signal via several channel paths, so that information in the case where use space diversity The element of vector (s) value having the same.Certainly, it is also contemplated that the combination of spatial multiplex scheme and space diversity scheme.Change sentence It talks about, same signal is sent via three Tx antennas according to space diversity scheme, spatial reuse is carried out to remaining signal, then will It is sent to destination.Next, if using N_RA Rx antenna, then Rx signal (y1, y2 ..., the y of each antenna_NR) can be under Specific vector (y) shown in the equation 6 in face indicates:

[equation 6]

It, can be according to Tx/Rx antenna index come mutual area meanwhile if performing Channel Modeling in MIMO communication system Divide each antenna.Particular channel by the range from Tx antenna (j) to Rx antenna (i) is with h_ijIt indicates.In this case, should Note that channel h_ijIndexed sequential be located at before Rx antenna index and be located at after Tx antenna index.Several channels are bound, are allowed to It is shown with vector or matrix form.Set forth below is exemplary vectors.

Fig. 6 is shown from N_TChannel of a Tx antenna to Rx antenna (i).Referring to Fig. 6, by from N_TA Tx antenna was by Rx days The channel of the range of line (i) can be indicated by following equation 7:

[equation 7]

If by from N_TA Tx antenna is to N_RMatrix shown in 7 indicates all channels of the range of a Rx antenna in equation, Then obtain following equation 8:

[equation 8]

Meanwhile additive white Gaussian noise (AWGN) is added to the actual channel by channel matrix H shown in equation 8.Addition To N_RAWGN (the n of each antenna in a Rx antenna₁,n₂,…,n_NR) can the specific vector table as shown in following equation 9 Show:

[equation 9]

By the above-mentioned modeling method of Tx signal, Rx signal, AWGN, each MIMO communication system can be by following equation 10 indicate:

[equation 10]

Meanwhile indicating that the line number of the channel matrix H of channel conditions and columns are determined by the quantity of Tx/Rx antenna.In channel In matrix H, line number is equal to the quantity (N of Rx antenna_R), and columns is equal to the quantity (N of Tx antenna_T).In other words, channel matrix H It is expressed as N_R×N_TMatrix.

In general, defining rank of matrix by lesser number in line number and columns, wherein ranks are mutually indepedent.Therefore, rank of matrix is not Line number or columns can be greater than.The order of channel matrix H can be indicated by following equation 11:

[equation 11]

rank(H)≤min(N_T,N_R)

Downlink reference signal is described more fully below.

Downlink reference signal includes the public reference signal (CRS) shared between all UE for including in the cell and divides The DRS (Dedicated Reference Signal) (DRS) of dispensing particular UE.In 3GPP lte-a system or similar system, DRS alternatively referred to as demodulates RS (DM RS)。

Public reference signal (CRS) can be used for obtaining channel state information and carry out handover measurement.DRS (Dedicated Reference Signal) (DRS) can be used for solving adjusting data.CRS can be cell specific reference signal, and DRS can be UE specific reference signals.

UE measures CRS, and to BS notice channel feedback information (such as channel quality information (CQI), pre-coding matrix instruction Accord with (PMI), order designator (RI)).BS carries out downstream frequency scheduling using from the received feedback information of UE.

In order to send UE for above-mentioned reference signal, BS considers that the radio resource of each reference signal will be distributed to Amount, CRS and the dedicated location of DRS, the position of synchronizing channel (SCH) and broadcast channel (BCH), DRS density etc. carry out resource and divide Match.

In this case, it is assumed that being assigned with larger amount of resource to each reference signal, then message transmission rate is opposite Deterioration, and channel estimating performance increases.Assuming that being assigned with relatively small number of resources to each reference signal, then reference signal density drops It is low, and message transmission rate increases, and channel estimating performance is caused to deteriorate.Therefore consider channel estimation, message transmission rate etc. pair It is extremely important for system performance that each reference signal carries out effective resource allocation.

Fig. 7 is reference signal (RS) used in downlink (DL) subframe for showing according to embodiment of the present invention The schematic diagram of structure, and show the subframe knot of the reference signal in the system for being mapped to and being at best able to support 4 antennas Structure.

Referring to Fig. 7, a downlink subframe is made of two time slots in time domain.Reference number " 1 " indicates each time slot Notation index, and first three symbol is assigned to control information area.In addition, being reflected as unit of on frequency domain by a resource block It penetrates reference signal (RS), and repeats to send and map resulting RS.

It, can be according to the quantity for the OFDM symbol for including in one time slot of structural change of cyclic prefix (CP) in Fig. 7.Figure 7 (a) show the OFDM symbol for conventional CP.In Fig. 7 (a), the quantity for the OFDM symbol for including in a time slot is 7. Fig. 7 (b) shows the OFDM symbol for extending CP.In Fig. 7 (b), the length of OFDM symbol increases, so that at one The quantity for the OFDM symbol for including in gap is less than the case where routine CP, for example, the quantity of OFDM symbol may be configured as 6.

Reference element (RE) 0 in the resource element (RE) for including in resource block shown in Fig. 7 (a) or 7 (b) (RB), 1, 32, (wherein 0,1,2,3 R0, R1, R2, R3 for respectively indicating the RS corresponding to every antenna port) is indicated for four antenna ports The specific public reference signal of cell (CRS).RE 0,1,2,3 is suitable for measuring through the transmission of each antenna port 0,1,2,3 The state of channel, and demodulate the data for being sent to each port 0,1,2,3.Reference symbol " D " indicates UE specifically dedicated ginseng It examines signal (DRS), and is suitable for demodulating the data sent by PDSCH.It is sent out about the DRS information that whether there is via high-level signaling It is sent to UE.Only in the case where the UE of corresponding PDSCH is assigned, which just corresponds to effective resource element (RE).

If public reference signal (CRS) is mapped to T/F region resource, on frequency domain between 6 RE CRS mapping result is sent every the mapping for carrying out CRS to 1 antenna port, and with the interval of 6 RE.Therefore, 1 RB is by frequency domain On 12 RE in total constitute, and each antenna port uses 2 RE.

On the other hand, equation 12 show RS to resource block mapping ruler.

[equation 12]

K=6m+ (v+v_shift)mod 6

[equation 13]

[equation 14]

In equation 12-14, k, p indicate sub-carrier indices and antenna port.n_s、It is expressed as DL distribution RB quantity, time slot index, cell ID.Note: given RS depends on V in terms of being located in frequency domain_shiftValue.

Wish the association that the lte-a system as next generation mobile communication system standard can support existing standard not support still Make multiple spot (CoMP) system, with improve data transfer rate.In this case, CoMP system is expressed as follows system: wherein two A above base station or cell are communicated with cooperating with user equipment, with improve the user equipment being located in shadow region with Communication throughput between base station (cell or sector).

CoMP system can be divided by data sharing collaboration MIMO Type C oMP Combined Treatment (CoMP-JP) system and CoMP cooperative scheduling/beam forming (CoMP-CS/CB) system.

For downlink, according to CoMP-JP system, user equipment can receive simultaneously number from each base station for executing CoMP According to, and handling capacity can be received by that will be combined with each other to improve from each base station received signal.It is different from CoMP-JP system, According to CoMP-CS/CB system, user equipment can receive data from a base station by beam forming.

For uplink, according to CoMP-JP system, each base station can receive simultaneously PUSCH signal from user equipment.With CoMP-JP system is different, and according to CoMP-CS/CB system, an only base station can receive PUSCH.In this case, by Cooperation cell (or base station) determines CoMP-CS/CB system.

In MU-MIMO technology, each antenna resources are assigned to user equipment by eNode B, and can be by selection With higher data rate sends the user equipment of data and is scheduled on each antenna.MU-MIMO technology improves system Handling capacity.

Referring to Fig. 8, the SRS unrelated with upstream data and/or control transmission is mainly used for channel quality estimation, thus upper Frequency selective scheduling is realized on line link.But SRS can also be used for other purposes, such as enhancing power control or support are closely The various startup functions of phase unscheduled UE.SRS is the reference signal for up channel, is to be sent to user by eNode B The pilot signal of equipment, and for measuring the channel status between user equipment and eNode B.For sending the channel of SRS Can have different transmission bandwidth and sending cycle for each user equipment according to status of user equipment.ENode B can be true The fixed data channel for dispatching which user equipment in each subframe.

Some examples include initial modulation encoding scheme (MCS) selection, the initial power control that data are sent, timing advance And the scheduling of so-called frequency semi-selective, in frequency semi-selective scheduling, for subframe the first Slot selection point With frequency resource, and frequency resource pseudorandomly jumps to different frequency in the second time slot.

Under wireless channel hypothesis reciprocal between uplink downlink, SRS can be used for down channel quality estimation.Upper Downlink shares same frequency spectrum and in time division duplex (TDD) system for separating in the time domain, and above-mentioned hypothesis is effective.It can be by UE in cell-specific broadcast signaling indicating cell is used to send the subframe of SRS.4 cell-specific parameters " srssubframeConfiguration " indicates 15 possible subframe collection that SRS can be wherein sent in each radio frames. This arrangement provides the flexibilities of adjustment SRS overhead.As shown in figure 9, can the last one SC- in configured in this way subframe SRS is sent in FDMA symbol.

Therefore, SRS and demodulated reference signal (DM RS) are located in the different SC-FDMA symbols in subframe.It can be according to frequency Distinguish the SRS of the multiple UE sent in the last one SC-FDMA symbol of same subframe in position.Due to not over for SRS Specified SC-FDMA symbol sends PUSCH data, therefore each subframe has SRS symbol in the worst case, to make At 7% detection expense.

SRS is generated using constant amplitude zero auto-correlation (CAZAC) sequence or similar sequence.From multiple UE send SRS be with The CAZAC sequence of the different cyclic shift value α according to following equation 15Herein, r^SRS(n) it is SRS sequence.

[equation 15]

Herein,It is high level for the value of each UE setting, and with the integer value between 0-7.It is moved by circulation Each CAZAC sequence that position is generated according to a CAZAC sequence from have and the cyclic shift value of the CAZAC sequence is different follows Other CAZAC sequence zero correlations of ring shift value.Using these characteristics, can be distinguished according to the cyclic shift value of CAZAC sequence The SRS in same frequency region.The SRS of each UE is distributed to frequency according to the parameter that eNodeB is arranged.The jump of UE execution SRS Frequently, to allow to send SRS by entire upstream data transmission bandwidth.

As described above, 8/9 system of 3GPP LTE version only supports the periodical SRS of UE to send.This allows eNodeB can Estimate the uplink signal-channel quality of each UE.Herein, the channel through eNodeB estimation is suitable for the scheduling of such as frequency dependence, link level It answers, the function of timing estimation and UL power control.SRS parameter can be used to lead in such a way that UE is specific or cell is specific for eNodeB It crosses high-level signaling (such as RRC signaling) etc. and sends the configuration of SRS uplink to each UE.Pass through SRS uplink as shown in Table 4 below Configuration information element type of message, eNodeB can notify SRS uplink configuration information to UE.

[table 4]

SoundingRS-UL-Config information element

Following table 5 is shown included by the SoundingRS-UL-Config information element message type in above-mentioned table 4 SRS configuration parameter.

[table 5]

As shown in table 4-5, the SRS configuration information that eNodeB is supplied to UE may include as SRS configuration parameter SrsBandwidthConfiguration parameter, srsSubframeConfiguration parameter, srsBandwidth parameter, FrequencyDomainPosition parameter, SrsHoppingBandwidth parameter, duration parameter, SrsConfigurationIndex parameter and transmissionComb parameter.SrsBandwidthConfiguration ginseng Number indicates that the maximum SRS bandwidth information in cell, srsSubframeConfiguration parameter indicate that UE can be used in cell The information of the interior subframe collection for sending SRS.ENodeB can be joined srsSubframeConfiguration by the specific signaling of cell Number notice is to UE.As shown in table 4, eNodeB can be used 4 sizes (indicate sc0, sc1, sc2, sc3, sc4, sc5, sc6, Sc7sc8sc9sc10, sc11, sc12, sc13, sc14, sc15) srsSubframeConfiguration parameter signal is led to Know to UE.SrsBandwidth parameter indicates that the SRS transmission bandwidth of UE, frequencyDomainPosition parameter indicate frequency Position on domain, SrsHoppingBandwidth parameter indicate SRS frequency hopping size, and it is single that duration parameter, which indicates that SRS is sent, A transmission or periodicity sending.SrsConfigurationIndex parameter indicates that period and sub-frame offset are (such as corresponding in frame Interval time unit between the subframe of the first SRS of the first subframe and transmission), transmissionComb parameter indicates to pass Defeated comb offset.

ENodeB can by the specific signaling of cell by srsBandwidthConfiguration parameter and SrsSubframeConfiguration parameter is notified to UE.In contrast, eNodeB can be incited somebody to action by the specific signaling of UE SrsBandwidth parameter, frequencyDomainPosition parameter, SrsHoppingBandwidth parameter, duration Parameter, srsConfigurationIndex parameter, transmissionComb parameter are individually notified to each UE.

Compared with conventional system, 10 system of 3GPP LTE version supports aperiodicity SRS to send, to carry out with more adaptation Property uplink signal-channel quality estimate and more efficiently use SRS resource.It is now discussed with the side that triggering aperiodicity SRS is sent Method.For example, eNodeB can be triggered in PDCCH using DL/UL authorization.In other words, eNodeB can be by including being used for The DL authorization or UL authorization for triggering the indicator that the aperiodicity SRS of UE is sent send the indicator, or can be newly to define Message format sends the indicator.Below with reference to the exemplary of the message sent as the aperiodicity SRS for triggering UE Aperiodicity SRS triggering authorizes (or aperiodicity SRS triggers indicator) to describe the present invention.

In the present invention, eNodeB can provide the information configured about multiple aperiodicity SRS to UE by high-level signaling. Multiple aperiodicity SRS configuration informations that eNodeB is sent may include the index for receiving the subframe of aperiodicity SRS triggering authorization Information, or such as about between the subframe for receiving the subframe aperiodicity SRS corresponding to transmission that aperiodicity SRS triggering authorizes The information of the information of time relationship and the information about the resource sent for aperiodicity SRS.It is proposed that UE is selected Property application multiple aperiodicity SRS configure.Particularly, UE can utilize the rope for the subframe for receiving aperiodicity SRS triggering authorization Time between the subframe of fuse breath or the subframe aperiodicity SRS corresponding to transmission of reception aperiodicity SRS triggering authorization closes It is and adaptively switches aperiodicity SRS configuration.

Herein, the quantity of aperiodicity SRS configuration can son corresponding with the arrival time point that aperiodicity SRS triggers authorization Between the subframe of the subframe aperiodicity SRS corresponding to transmission of the index classification or reception aperiodicity SRS triggering authorization of frame The definition of time relationship and change.The advantages of this method as suggested in the present invention is that this method is not needed for aperiodicity The additional signaling of SRS configuration switching, and configured and switched by adaptive aperiodicity SRS, it can also efficiently solve SRS and cover Lid problem and altogether channel heterogeneous network (HetNet) uplink signal interference problem.

It is possible, firstly, to consider to reuse the spy of cell defined in 8/9 system of 3GPP LTE version in the method for suggestion The specific aperiodicity SRS resource of fixed cycle SRS resource, UE and UE specific period SRS resource, which are used as, is used for aperiodicity The resource that SRS is sent.Therefore, this method reduces compared with there is defined the method for additional new aperiodicity SRS resource Expense needed for signaling SRS resource location information, and realize the effective use of SRS resource.

Aperiodicity SRS that eNodeB is sent by high-level signaling configuration can be variously defined for such as SRS bandwidth, The parameter of comb, frequency hopping bandwidth, and Physical Resource Block (PRB) distribution is originated with different values.

Due to whether carry out aperiodicity SRS transmission not only pass through aperiodicity SRS triggering authorization determine, but also UE also from Adaptively switch multiple aperiodicity SRS configuration, therefore, it is suggested that method the advantages of be that it can more effectively be handled The state change of up channel between eNodeB and UE.Specifically, in the case where such as HetNet situation, suitable non-week Phase property SRS configuration can change according to the position of UE.For this purpose, eNodeB needs offer to configure about multiple aperiodicity SRS Information and about multiple aperiodicity SRS configuration resource information, and the processor 255 of UE need properly to select it is multiple An aperiodicity SRS in aperiodicity SRS configuration is configured and is carried out corresponding operating.It is tied up for example, UE can be used with a subframe Fixed aperiodicity SRS configuration, being received in the burst according to the reception of PDCCH timing includes UL authorization (for example, for touching Send out aperiodicity SRS send UL authorization, or for trigger PUSCH transmission UL authorization) PDCCH.

The UE time point for sending aperiodicity SRS is described below.Assuming that UE (is indexed in the subframe n of particular frame For the subframe of " n ") in received aperiodicity SRS triggering authorization, then UE send aperiodicity SRS time point for example corresponding to Immediate cell specific period SRS subframe after closest to the cell specific period SRS subframe of subframe n or subframe n+3. UE not only can be by the specific aperiodicity SRS resource of such cell, can also to pass through the specific aperiodicity SRS resource of UE and UE special Fixed cycle SRS resource carries out aperiodicity SRS transmission.It is a little that the time point that the aperiodicity SRS of UE is sent is not limited to this Frame.

It is overlapped in the aperiodicity SRS sending time point of different UE and the situation of aperiodicity SRS resource deficiency can be used Under, it is contemplated that the aperiodicity SRS bandwidth of UE, aperiodicity SRS sending cycle etc. assign aperiodicity SRS send it is higher excellent First weigh.

Fig. 9 a-9b shows the illustrative sub-frame of cell specific period SRS transmission and UE specific period SRS is sent Illustrative sub-frame.

As illustrated in fig. 9, eNodeB can be configured according to cell specific period SRS with the week in the interval 2ms configuration particular frame Phase property SRS subframe (subframe 1,3,5,7,9) (being shown in fig. 9 a with oblique line).

Fig. 9 b shows UE specific period SRS configuration.ENodeB can be by the son including cell specific period SRS subframe A part of frame collection distributes to particular UE as UE specific period SRS subframe.As shown in figure 9b, eNodeB is for example according to UE spy Fixed cycle SRS configuration is with the interval 4ms to particular UE assignment period SRS subframe (subframe 1,5,9).In this case, The subframe that the particular UE of UE specific period SRS subframe can be 1,5,9 in the subframe index in particular frame is assigned with by eNodeB The specific SRS of sending cycle UE in (depicted with dots in figure 9b).

In 10a, 10b, 10c, it is assumed that eNodeB configures cell specific period SRS for subframe 1,3,5,7,9 Frame, and UE specific period SRS subframe is configured by subframe 1,5,9.

The settable multiple aperiodicity SRS of eNodeB are configured and by aperiodicity SRS configuration notification to UE.Herein, this A little aperiodicity SRS configurations are known as the first aperiodicity SRS configuration and the second aperiodicity SRS configuration.ENodeB passes through high level Signaling notifies the information about above-mentioned multiple aperiodicity SRS configurations to UE.Aperiodicity SRS configuration information may include about UE sends the information at the time point of aperiodicity SRS and the information about the resource sent for aperiodicity SRS.For example, UE send aperiodicity SRS time point can for closest to receive aperiodicity SRS triggering authorization subframe n (or subframe n it The cell specific period SRS subframe that cell specific period SRS subframe or subframe n+3 afterwards earliest) follows closely later.In addition, Periodical SRS can not only be sent by the specific SRS resource of cell, can also be specific by the specific aperiodicity SRS resource of UE and UE Periodical SRS resource is sent.Assume the description present invention by following below: for example hypothesis aperiodicity SRS configuration has been configured to So that the time point that UE sends aperiodicity SRS is that (subframe n) is nearest for the closest subframe for receiving aperiodicity SRS triggering authorization Cell specific period SRS subframe.In the following description, it is also assumed that small with the interval setting of 2ms shown in such as Fig. 9 a Area specific period SRS sends subframe.

2nd SRS configuration is configured such that UE in response to the received aperiodicity SRS in subframe n (n=1,2 ...) Triggering authorizes and sends aperiodicity SRS in subframe n+2.First SRS configuration is configured such that UE in response in subframe n+1 In received aperiodicity SRS triggering authorization and aperiodicity SRS is sent in subframe n+2.In this way, the processing of UE Device 255 can be based on the time received between the subframe of aperiodicity SRS triggering authorization and corresponding aperiodicity SRS transmission subframe Relationship selects specific SRS to configure from multiple SRS configuration, and the executable operation corresponding to selected SRS configuration.Herein, example Such as assume that 1 frame includes 10 subframes, and assigns subframe index 1-10 respectively to 10 subframes for including in 1 frame.

0a referring to Fig.1 configures according to the second aperiodicity SRS, can configure as follows UE: touching when receiving aperiodicity SRS The time relationship between the subframe of authorization and corresponding aperiodicity SRS transmission subframe is sent out (that is, receiving aperiodicity SRS triggering The subframe of authorization and corresponding aperiodicity SRS send the difference of the index between subframe) when being 2, UE by partial-band (such as Pass through the partial-band on the frequency axis of subframe n+2) for aperiodicity SRS touching received in subframe n (n=1,2 ...) Hair authorizes and sends aperiodicity SRS.In this case, aperiodicity SRS is received to trigger the time point authorized and to send The difference at the time point of aperiodicity SRS is 2.In other words, when UE is configured so that the reception aperiodicity SRS in subframe 1 When sending triggering authorization and sending aperiodicity SRS in subframe 3, UE can be sent non-by the partial-band 1010 of subframe 3 Periodical SRS.Similarly, when UE is configured so that receiving aperiodicity SRS in subframe 5 sends triggering authorization and in son When sending aperiodicity SRS in frame 7, UE can send aperiodicity SRS by the partial-band 1020 of subframe 7.

On the other hand, 0b referring to Fig.1 configures according to the first aperiodicity SRS, can configure as follows UE: when receiving non-week The subframe of phase property SRS triggering authorization sends the time relationship between subframe (that is, receiving aperiodic with corresponding aperiodicity SRS Property SRS triggering authorization subframe and corresponding aperiodicity SRS send subframe between index difference) be 1 when, UE passes through full range Band 1030,1040 (such as Whole frequency band on the frequency axis for passing through subframe n+2) is directed to be received in subframe n+1 (n=1,2 ...) Aperiodicity SRS triggering authorization send aperiodicity SRS.

Term " partial-band SRS transmission " refers to that the partial-band for being utilized as the subframe that SRS sends distribution sends SRS, and Term " Whole frequency band SRS transmission " refers to that the entire frequency band for being utilized as the subframe that SRS sends distribution sends SRS.

When the up channel between eNodeB and UE in order when, may be selected Whole frequency band aperiodicity SRS send.Example Such as, the macro UE of the neighbouring eNodeB or separate family eNodeB (HeNB) that sends frequency band identical as macro eNodeB (MeNB) use (MUE) UE can carry out Whole frequency band aperiodicity SRS and send operation.On the other hand, when the up channel between eNodeB and UE When in poor shape, selectable portion frequency band aperiodicity SRS is sent.For example, being located at cell edge or making adjacent to being located at MeNB With in the region of identical transmission frequency band and the HeNB that sends uplink signal or the UE of neighbouring MUE can to carry out partial-band aperiodic Property SRS send operation.

The processor 255 of UE can be awarded based on current network state and communication environment and reception aperiodicity SRS triggering The time point of power, it is proposed that the configuration of the first, second SRS aperiodicity between it is adaptive and neatly switch, thus Effectively processing SRS covering problem and altogether channel HetNet uplink signal interference problem.

Particularly, based on the partial-band non-week for wherein sending aperiodicity SRS by frequency hopping partial-band 1010,1020 The configuration of the second aperiodicity SRS shown in Figure 10 a is arranged in phase property SRS transmission scheme.In this scenario, UE can be sent to power The a part in entire SRS resource region is concentrated on, to efficiently solve SRS covering problem.

The configuration of the first aperiodicity SRS according to shown in Figure 10 b, when to be configured so that UE is sent in subframe 2 non-by UE When periodical SRS sends triggering authorization and sends aperiodicity SRS in subframe 3, UE can be sent out by the Whole frequency band 1030 of subframe 3 Send aperiodicity SRS.Similarly, when UE is configured so that UE sends aperiodicity SRS in subframe 6 and sends triggering authorization simultaneously When sending aperiodicity SRS in subframe 7, UE can send aperiodicity SRS by the Whole frequency band 1040 of subframe 7.

Although the configuration of aperiodicity SRS shown in Figure 10 c is analogous to the second aperiodicity SRS configuration based on partial-band The setting of aperiodicity SRS transmission scheme, but non-hopping scheme can also be used, aperiodicity SRS configuration is set, to solve Channel HetNet uplink signal interference problem altogether.Herein, it is defined as the partial-band of orthogonal fixation 1050,1060 to be used for macro UE Frequency band is sent with the uplink signal of family UE.

First aperiodicity SRS configuration and the second aperiodicity SRS configuration can be defined as the configuration group of Figure 10 a, 10b It closes or the configuration of Figure 10 b, 10c is combined.ENodeB can provide the combined information and/or selection that define to UE by high-level signaling Combined information.

Referring to Fig.1 1, it is assumed that eNodeB to particular UE be assigned with the subframe 1 as cell specific period SRS subframe, 3,5,7,9 and as UE specific period SRS subframe subframe 1,5,9.The configuration of the aperiodicity SRS according to shown in Figure 11, The processor 255 of UE can aperiodicity SRS trigger the index of subframe that authorization has reached wherein be odd number (n=1,3, 5 ..., 9) (in this case the index of the first subframe be 1) when, select the first aperiodicity SRS from multiple SRS configuration Configuration, and can select for the second non-week when the index that aperiodicity SRS triggers the subframe that authorization has reached wherein is even number Phase property SRS configuration.

For example, if UE, which receives aperiodicity SRS in the subframe 1 as odd number index subframe, sends triggering authorization, Then UE can be sent non-by the Whole frequency band 1110 in the subframe 3 as the specific aperiodicity SRS subframe of cell closest to subframe 1 Periodical SRS.It is awarded in addition, if UE receives aperiodicity SRS transmission triggering in the subframe 6 as even number index subframe Power, then UE can be sent out by the Whole frequency band 1120 in the subframe 7 as the specific aperiodicity SRS subframe of cell closest to subframe 6 Send aperiodicity SRS.

In another embodiment of Figure 11, when the UE specific period that eNodeB has been distributed to particular UE in particular frame When SRS subframe index is n (such as n=1,5,9), the subframe for receiving aperiodicity SRS triggering authorization was divided into corresponding to time point The subframe of n-4 and subframe corresponding to the time point except n-4.Herein, time point " n-4 " can be carried out based on other values different Definition.

In Figure 11, if UE receives aperiodicity in the subframe (i.e. the first subframe or subframe 1) that subframe index is 1 SRS triggering authorization, then due to being 5 subframe (i.e. subframe 5) relative to subframe index, subframe 1 is corresponding with time point n-4, therefore UE can carry out SRS hair by the Whole frequency band 1110 in subframe 3 (the closest or earliest specific SRS subframe of cell after subframe 1) Send operation.In addition, if UE subframe index be 6 subframe (i.e. subframe 6) in receive aperiodicity SRS triggering authorization, then by In the subframe (i.e. subframe 9) for being 9 relative to subframe index, subframe 6 and time point n-4 be not corresponding, therefore UE can pass through subframe 7 Partial-band 1120 in (closest to the specific SRS subframe of cell of subframe 6) carries out SRS and sends operation.

In the case where UE has received aperiodicity SRS triggering authorization in the subframe corresponding to time point n-4, UE can It is operated using Whole frequency band aperiodicity detection mode (being configured according to third aperiodicity SRS).Otherwise, portion can be used in UE Split-band aperiodicity detection mode (being configured according to the 4th aperiodicity SRS) is operated.With the first, second aperiodicity SRS configuration is identical, these schemes all have the feature that UE passes through closest to the subframe for receiving aperiodicity SRS triggering authorization Cell specific period SRS subframe send aperiodicity SRS.Third can be arranged by eNodeB, the 4th aperiodicity SRS matches Set, and eNodeB can by high-level signaling by third, the 4th SRS configuration notification to UE.

Figure 12 a-12b shows the exemplary SRS subframe of aperiodicity SRS configuration.

The settable 5th aperiodicity SRS configuration of 2a referring to Fig.1, eNodeB, so that the subframe that UE is 1,5,9 by index Partial-band send aperiodicity SRS.It is configured according to the 5th aperiodicity SRS, due to SRS sending cycle and sub-frame offset point Not Wei 4ms, 0ms (as figure 12 a shows), therefore UE can send SRS in subframe 1,5,9 by the partial-band of subframe 1,5,9.

The settable 6th aperiodicity SRS configuration of 2b referring to Fig.1, eNodeB, so that UE is by indexing the subframe for 3,7 Whole frequency band sends aperiodicity SRS.It is configured according to the 6th aperiodicity SRS, since SRS sending cycle and sub-frame offset are respectively 4ms, 2ms (as shown in Figure 12b), therefore UE can send SRS in subframe 3,7 by the Whole frequency band of subframe 3,7.Herein, Five, it in the 6th aperiodicity SRS configuration, is used for due to reusing to be used as the resource of cell specific period SRS transmission Aperiodicity SRS send subframe resource, therefore the period for wherein having sent the subframe of aperiodicity SRS can be specified with it is small The period of area's specific period SRS subframe is identical or its multiple.ENodeB can be aperiodic by the first, the 6th by high-level signaling Property SRS configuration information (information including sending subframe about the SRS configured according to the five, the 6th SRS) notice to UE.

UE pass through closest to receive aperiodicity SRS triggering authorization subframe cell specific period SRS subframe into In the case that row aperiodicity SRS is sent, UE can be according to the immediate cell specific period for having sent aperiodicity SRS The SRS configuration of SRS subframe differently carries out aperiodicity SRS transmission.

For example, as shown in figure 13, cell specific period SRS configuration is configured to subframe 1,3,5,7,9 being assigned as week Phase property SRS sends subframe.Subframe 1,5,9 can be assigned as UE specific period SRS and send subframe by eNodeB.When UE is in subframe 1 In receive aperiodicity SRS triggering authorization when, UE can be by subframe 3 (closest to cell specific period SRS of subframe 1 Frame) send aperiodicity SRS.Herein, since the cell closest to the time point for receiving aperiodicity SRS triggering authorization is specific non- Periodical SRS subframe 3 corresponds to the subframe that the 6th aperiodicity SRS according to shown in Figure 12 b is configured and configured, therefore UE can lead to The Whole frequency band 1310 for crossing subframe 3 sends aperiodicity SRS.In another embodiment, similar with the 3rd SRS configuration, due to phase For the subframe 5 as cell specific period SRS subframe, wherein it is right to receive the subframe 1 that aperiodicity SRS triggering authorizes by UE Should be in time point n-4, therefore UE can send aperiodicity SRS by the Whole frequency band 1310 of subframe 3.

In addition, UE can be (closest by subframe 9 when UE has received aperiodicity SRS triggering authorization in subframe 8 The cell specific period SRS subframe of subframe 8) send aperiodicity SRS.Herein, due to being touched closest to reception aperiodicity SRS The specific aperiodicity SRS subframe 9 of cell for sending out the time point of authorization is the configuration of the 5th aperiodicity SRS according to shown in Figure 12 a And the subframe configured, therefore UE can send aperiodicity SRS by the partial-band 1320 of subframe 9.In another embodiment, It is similar with the 4th SRS configuration, since relative to the subframe 9 as cell specific period SRS subframe, wherein UE receives non-week The subframe 8 of phase property SRS triggering authorization does not simultaneously correspond to time point n-4, therefore UE can be sent by the partial-band 1320 of subframe 3 Aperiodicity SRS.

Subframe 9 is assigned as UE specific period SRS subframe, so that subframe 9 is basically used for executing periodical SRS transmission. However, exception is when subframe 9 is Chong Die with aperiodicity SRS sending time point, UE can cancel periodical SRS and send and send out Send aperiodicity SRS.

Figure 14 a-14b shows rollback aperiodicity SRS transmission.

The 7th aperiodicity SRS configuration and the 8th aperiodicity SRS configuration that Figure 14 a-14b is shown respectively are configured to make UE is obtained to utilize the time point (such as subframe index) for having received aperiodicity SRS transmission triggering authorization and to send aperiodicity Time difference between the time point of SRS sends aperiodicity SRS by Whole frequency band or partial-band.

ENodeB can be configured according to the 7th aperiodicity SRS as shown in figures 14a and be distributed SRS subframe.With shown in Figure 10 b Aperiodicity SRS trigger method (i.e. the first SRS allocation plan) it is similar, the 7th aperiodicity SRS configuration is configured such that Aperiodicity SRS is sent by Whole frequency band.However, will be used by its Whole frequency band in the 7th aperiodicity SRS configuration Conventional aperiodicity SRS resource be divided into the Whole frequency band aperiodicity SRS resource 1410 reconfigured and rollback aperiodicity SRS money Source 1415.

As shown in figures 14a, the region resource block (RB) is reduced in the part of allocated Whole frequency band aperiodicity SRS resource 1410 1415 can be used as rollback aperiodicity SRS resource 1415.Alternatively, aperiodicity SRS resource 1415 can be predefined as with entirely The disjoint resource area of frequency band aperiodicity SRS resource.

The scheme of " rollback aperiodicity SRS resource " statement of Figure 14 a-14b refers to above two rollback aperiodicity SRS money Source allocation plan (i.e. " the Whole frequency band aperiodicity SRS resource reconfigured " scheme and " rollback aperiodicity SRS resource " scheme) And one of this two kinds of rollback aperiodicity SRS resource allocation plans are not it.In addition, rollback aperiodicity SRS resource 1415 can account for With being less than the resource area of Whole frequency band aperiodicity SRS resource 1410 reconfigured, and subframe can be sent for each SRS with frequency hopping Mode distributes rollback aperiodicity SRS resource 1415,1425.

UE is as follows between the Whole frequency band aperiodicity SRS resource reconfigured and rollback aperiodicity SRS resource It switches over.The processor 255 of UE is to currently available quantity of power and the Whole frequency band aperiodicity SRS resource by reconfiguring 1410 be successfully transmitted aperiodicity SRS needed for quantity of power be compared.When currently available quantity of power is enough, processor The 255 Whole frequency band aperiodicity SRS resource 1410 by reconfiguring sends SRS, in currently available quantity of power deficiency, processing Device 255 return back to rollback aperiodicity SRS resource 1415 and sends SRS by rollback aperiodicity SRS resource 1415.Herein, Due to the switching for determining and going to rollback aperiodicity SRS resource 1415 according to the processor 255 of UE, eNodeB is needed The resource area for wherein having had sent aperiodicity SRS is found by blind decoding.

The processor 255 of UE can determine whether transmission power is enough, then can be when determining that transmission power is enough in subframe 3 In SRS sent by the Whole frequency band aperiodicity SRS resource 1410 that reconfigures.In addition, UE can receive aperiodicity in subframe 6 SRS triggering authorization, and when the processor of UE 255 determines that UE can switch transmission scheme in subframe 7 when sending underpower To rollback aperiodicity SRS transmission scheme, to send aperiodicity SRS by rollback aperiodicity SRS resource 1415.The operation It can also be applied to partial-band aperiodicity detecting strategy.

ENodeB can be configured according to the 8th aperiodicity SRS and be configured SRS subframe as shown in fig. 14b.8th is aperiodic Property SRS configuration be the partial-band aperiodicity reconfigured being divided into partial-band aperiodicity SRS resource as shown in fig. 14b The aperiodicity SRS transmission scheme of SRS resource 1430 and rollback aperiodicity SRS resource 1440.Herein, aperiodicity SRS is touched Forwarding method uses with scheme used in Figure 10 a (i.e. the 2nd SRS allocation plan) identical scheme, and the aperiodicity that retracts SRS resource 1440 can be predefined as shown in fig. 14b with the disjoint resource-area of partial-band aperiodicity SRS resource 1430 Domain.Part reduction region resource block (RB) of allocated partial-band aperiodicity SRS resource also is used as retracting aperiodic Property SRS resource 1440.

As shown in fig. 14b, UE can receive aperiodicity SRS triggering authorization in subframe 1, and the processor 255 of UE can be true Surely whether enough power is sent.Then, when determining that transmission power is enough, UE can pass through partial-band non-week using power is sent Phase property SRS resource 1430 fully executes SRS transmission.In addition, UE can receive aperiodicity SRS triggering authorization in subframe 5, and And when the processor of UE 255 determines and sends underpower, SRS transmission scheme can be switched to rollback aperiodicity SRS hair by UE Scheme is sent, and aperiodicity SRS is sent by the rollback aperiodicity SRS resource 1450 of subframe 7.In this case, UE can Aperiodicity SRS transmission is carried out by rollback aperiodicity SRS resource 1450.Therefore, UE can adaptively be return back to separately Aperiodicity SRS resource is selected, to efficiently solve SRS covering problem.Then, when UE passes through rollback aperiodicity SRS resource When sending aperiodicity SRS, eNodeB needs to search for the resource area for wherein having sent aperiodicity SRS by blind decoding.? In above-mentioned example, the processor 255 of UE is by determining whether power determines whether to switch the rollback aperiodicity side SRS enough Case.However, when receive neighbor cell interference notification information (such as instruction serving cell connect on special frequency band from neighboring community Receive the information interfered strongly) when, UE can also be operated according to rollback aperiodicity SRS scheme for special frequency band.For example, When the UE A positioned at the edge of neighboring community A has sent SRS on the special frequency band of subframe 1, if uplink SRS is sent to small Area B causes strong interference, then cell B is contemplated that uplink interference and provides signaling (such as 1 bit signaling), such as indicating cell B In UE by rollback aperiodicity SRS resource send aperiodicity SRS information.Then, the UE in cell B can be based on the letter It enables and SRS is sent by rollback aperiodicity SRS resource in subframe 1.Cell A, B can be exchanged by back haul link or similar fashion About the information of this uplink interference, and is sent according to the SRS of neighboring community and consider uplink interference and distribute the UE's in cell SRS resource.

Figure 15 a shows the configuration of cell specific SRS subframe and the specific SRS resource configuration of cell, and Figure 15 b is shown in which pair The SRS configuration that cell specific period SRS resource and the specific aperiodicity SRS resource of cell are multiplexed, Figure 15 c are shown Example property aperiodicity SRS subframe configuration.

5a referring to Fig.1, eNodeB can be configured subframe 1,3,5,7,9 to the interval of 2ms according to pre-set rule The specific SRS subframe of cell, and correspondingly distribute the specific SRS resource of cell.UE can be by aperiodicity SRS subframe or right wherein The subframe that cell specific period SRS resource and the specific aperiodicity SRS resource of cell are multiplexed sends aperiodicity SRS.

5b-15c referring to Fig.1, in the specific SRS subframe of the cell configured in fig. 15 a, eNodeB can be separately configured at it In subframe (such as subframe 1,5,9) that cell specific period and aperiodicity SRS resource are multiplexed and " periodically SRS subframe " (such as subframe 3,7).Herein, in the present solution, using wherein to cell specific period and aperiodicity SRS The subframe that resource is multiplexed, and the specific SRS resource of cell is divided into " periodical SRS resource " 1510 and " aperiodicity SRS money Source " 1520.

In a kind of division methods of the specific SRS resource of cell, the specific SRS resource of cell is divided into two orthogonal areas (such as two sub-bands).It can will include that available comb is divided into total collection of (or set) and cyclic shift in alternative method Two subsets, and periodical SRS resource and aperiodicity SRS resource can be respectively allocated to two subsets.In later approach In, such as two available combs can be divided into the comb for being used for Whole frequency band detection and the comb for being used for partial-band detection, it then can will With it is each comb be combined with each other 8 cyclic shift dimidiations, each half include 4 cyclic shifts, then can respectively by this two Half is allocated as periodical SRS resource and aperiodicity SRS resource.

For example, UE A can send aperiodicity SRS by the aperiodicity SRS resource 1520 in subframe 1, and UE B passes through 1510 sending cycle SRS of periodical SRS resource in subframe 1.It in other words, can be in subframe 1 to the aperiodicity of UE A The periodical SRS of SRS and UE B is multiplexed and is sent.Herein, UE can be by periodical SRS and aperiodicity SRS Aperiodicity SRS and periodicity SRS are multiplexed and are sent in subframe 1 using different combs, to improve certain band Wide channel estimation efficiency.

5c referring to Fig.1, in the subframe 3,7 for the specific SRS subframe of cell that Figure 15 a is configured, eNodeB can pass through full range Band 1530 sends distribution resource for aperiodicity SRS.

As shown in Figure 15 b-15c, eNodeB can be using the specific SRS subframe of cell as wherein to cell specific period and non- Subframe and aperiodicity SRS subframe that periodical SRS resource is multiplexed and be alternately carried out distribution.For example, eNodeB can The specific SRS subframe of cell is configured, so as to cell specific period and aperiodicity SRS resource in the specific SRS subframe 1 of cell It is multiplexed, the subsequent specific SRS subframe 3 of cell is used as aperiodicity SRS subframe, and in subsequent specific SRS of cell Cell specific period and aperiodicity SRS resource are multiplexed in frame 5 (the 9th aperiodicity SRS configuration).In this feelings The rule used under condition can be used a variety of methods and carry out different definition.In the example of Figure 15 b, two kinds of cells are not necessarily used The specific SRS resource of cell is divided into periodicity and aperiodicity SRS resource by one of specific SRS resource division methods, can also be simultaneously The specific SRS resource of cell is divided into periodicity and aperiodicity SRS resource using two kinds of SRS resource division methods.

In addition, when request is in the subframe being wherein multiplexed to cell specific period and aperiodicity SRS resource When carrying out aperiodicity SRS transmission, UE can pass through defined aperiodicity SRS resource and send SRS.Since each UE is not aware that When aperiodicity SRS triggering indicator (such as authorization) is received, therefore eNodeB can be sent in advance for the aperiodicity SRS of UE First define and distribute resource.The each subframe being wherein multiplexed to cell specific period and aperiodicity SRS resource is By basic configuration at make in subframe carry out periodicity SRS transmission.However, exception is when subframe and aperiodicity When SRS sending time point is overlapped, UE can cancel periodical SRS and send and preferentially carry out aperiodicity SRS transmission.

Figure 16 shows the configuration of UE specific period SRS subframe.

ENodeB can be configured to particular UE as shown in figure 16 distribution SRS according to the tenth SRS and be sent subframe.Match in the tenth SRS In setting, UE specific period SRS subframe is distributed with the interval 2ms in particular frame.For example, in particular frame by subframe 1,3,5,7, 9 are assigned as UE specific period SRS subframe.It can be by certain sub-frame configurations in UE specific period SRS subframe at wherein to small The subframe that area's specific period and aperiodicity SRS resource are multiplexed, as shown in the dotted line of Figure 16.Although the dotted line institute of Figure 16 Cell specific period and aperiodicity SRS resource in the subframe shown are shown as being answered according to frequency division multiplexing (FDM) scheme With, but multiplexing method is not limited to FDM.Can in subframe 1,5,9 to cell specific period and aperiodicity SRS carry out multiplexing and It sends.For example, the public periodicity SRS of cell can be transmitted in UE A, and periodicity SRS can be transmitted in UE B in subframe 1,5,9.Separately Selection of land, in subframe 1,5,9, UE A can be multiplexed aperiodicity SRS and periodicity SRS in a subframe, thus Aperiodicity SRS and periodicity SRS are sent in the subframe simultaneously.With the week of the periodical SRS subframe of cell ad hoc fashion distribution Phase may be configured as identical as the period of cell specific period and aperiodicity SRS multiplexed sub frame or be its multiple.

Figure 17 a-17c, which is shown, utilizes the subframe aperiodicity corresponding with transmission for receiving aperiodicity SRS triggering authorization Time relationship between the subframe of SRS and the operation for being dynamically selected multiple SRS configurations.

Herein, UE is configured with two kinds of aperiodicity SRS, and referred to as the 11st SRS configuration and the 12nd SRS match It sets.Moreover, it is assumed that the time point that UE sends aperiodicity SRS is defined as after the subframe for receiving aperiodicity SRS triggering authorization Closest to the specific SRS subframe of cell of (or earliest), and the period of the specific SRS subframe of cell is set as 2ms.

ENodeB can be configured according to the 11st SRS to distribute SRS subframe as illustrated in fig 17 a.In UE in subframe n (example Such as n=5,9) in the case where receiving aperiodicity SRS triggering authorization in, the processor 255 of UE may be selected the 11st SRS and match It sets, and UE can be configured according to the 11st SRS and be sent in subframe n+2 (i.e. n+2=7,1) by partial-band 1710,1720 Aperiodicity SRS.In the 11st SRS configuration, UE is configured with frequency-hopping mode and passes through the partial-band of its transmission aperiodicity SRS 1710、1720。

ENodeB can be configured according to the 12nd SRS to distribute SRS subframe as illustrated in fig. 17b.UE and it is unallocated In the case where receiving aperiodicity SRS triggering authorization in the subframe n (such as n=2,8) of periodical SRS subframe, the place of UE Managing device 255 may be selected the 12nd SRS configuration, and UE can be configured according to the 12nd SRS and be led in subframe n+1 (i.e. n+1=3,9) It crosses its Whole frequency band and sends aperiodicity SRS.

Herein, it is assumed for example that 1 frame includes 10 subframes, and assigns subframe respectively to 10 subframes for including in 1 frame Index 1-10.When wherein receive aperiodicity SRS triggering authorization subframe index with will send wherein it is aperiodic Property SRS triggering authorization subframe index difference (corresponding to wherein receive aperiodicity SRS triggering authorization subframe and will Will be in the time relationship between the subframe for wherein sending aperiodicity SRS triggering authorization) when being 2, the processor 255 of UE may be selected 11st SRS configuration, for example, if UE has received aperiodicity SRS triggering authorization in subframe 5 as illustrated in fig 17 a, It can be configured according to the 11st SRS and aperiodicity SRS transmission operation is executed by partial-band 1710 in subframe 7.On the other hand, It is wherein receiving the index of the subframe of aperiodicity SRS triggering authorization when and aperiodicity SRS triggering will be sent wherein The index of the subframe of authorization difference (corresponding to wherein receive aperiodicity SRS triggering authorization subframe with will be wherein Send the time relationship between the subframe of aperiodicity SRS triggering authorization) when being 1, the processor 255 of UE may be selected the 12nd SRS configuration, for example, if UE has received aperiodicity SRS triggering authorization in subframe 8 as illustrated in fig. 17b, it can basis 12nd SRS configuration executes Whole frequency band aperiodicity SRS in subframe 9 and sends operation.Although with 1740 table of dotted line in Figure 17 b Show the resource for sending aperiodicity SRS in subframe 9, but sends aperiodicity SRS indeed through Whole frequency band.Namely It is to say, aperiodicity SRS and periodicity SRS can be distinguished by comb, cyclic shift etc., and can be by Whole frequency band together with comb, circulation Displacement etc. sends aperiodicity SRS together.

When in the subframe being multiplexed to cell specific period and aperiodicity SRS request carry out Whole frequency band or When partial-band aperiodicity SRS is sent, UE can be matched by defined aperiodicity SRS resource according to the first aperiodicity SRS It sets and carries out SRS transmission or configured according to the second aperiodicity SRS to carry out SRS transmission.

As illustrated in fig 17 a, distribution portion frequency band aperiodicity (can be indicated) by " 1710 ", " 1720 " under frequency-hopping mode SRS resource, to pass through diversity gain etc. efficiently against SRS covering problem.

ENodeB can be configured according to the 13rd SRS and be distributed SRS subframe as shown in fig. 17 c.As sample portion frequency Band aperiodicity SRS is configured, and the 13rd SRS configures the partial-band aperiodicity SRS scheme based on unused frequency hopping.13rd It include the partial-band aperiodicity SRS transmission that hopping scheme is not used in SRS configuration.When UE received in subframe 5 it is non- When periodical SRS triggering authorization, UE can be sent by the partial-band 1750 of the subframe 7 as subframe earliest after subframe 5 Aperiodicity SRS.In addition, UE can pass through subframe 9 in frame when UE has received aperiodicity SRS triggering authorization in subframe 9 The partial-band 1760 of subframe 1 later sends aperiodicity SRS.The partial-band aperiodicity SRS that frequency hopping is not used is sent Scheme for alleviate as between HetNet using altogether channel and caused by uplink signal interference problem it is extremely effective.

In Figure 18, when the index that UE has received the subframe of aperiodicity SRS triggering indicator (authorization) wherein is surprise When number (such as receiving aperiodicity SRS triggering authorization in subframe 1 as shown in figure 18), UE can be in subframe 3 by complete Frequency band carries out aperiodicity SRS and sends operation.On the other hand, when UE is in the son for wherein receiving aperiodicity SRS triggering authorization When the index of frame is even number (such as receiving aperiodicity SRS triggering authorization in subframe 6 as shown in figure 18), UE can be in son Partial-band aperiodicity SRS is carried out in frame 7 sends operation.

In another embodiment associated with Figure 18, when the UE specific period SRS subframe rope for distributing to particular UE When being cited as n, UE is divided into the subframe for wherein receiving aperiodicity SRS triggering authorization and corresponds to the time point for indexing n-4 Subframe and other subframes.Herein, the time point for indexing the subframe n-4 for " n-4 " can carry out different definition based on other values.

When UE is when receiving aperiodicity SRS triggering authorization at the time point of subframe n-4, UE can be by closest to subframe The Whole frequency band of the periodical SRS subframe of n sends aperiodicity SRS.On the other hand, when UE correspond to subframe n-4 when Between put when receiving aperiodicity SRS triggering authorization in the subframe at different time points, UE can pass through the period closest to subframe n Property SRS subframe partial-band send aperiodicity SRS.Both SRS configuration all uses following scheme: UE is by closest to UE Aperiodicity SRS transmission is carried out in the periodical SRS subframe for the subframe for wherein receiving aperiodicity SRS triggering authorization.

As shown in figure 18, for example, in the case where UE has received aperiodicity SRS triggering authorization in subframe 1, due to Relative to subframe 5 (n=5), subframe 1 corresponds to time point n-4, therefore UE can execute aperiodicity SRS by Whole frequency band 1810 Transmission operation.On the other hand, in the case where UE has received aperiodicity SRS triggering authorization in subframe 6, due to opposite In subframe 9 (n=9), subframe 6 and the subframe for not corresponding to time point n-4, therefore UE can execute non-week by partial-band 1820 The transmission of phase property SRS operates.

For ease of description, although there is also other frames after the second frame, Figure 19 a-19b is only shown to second Frame.As shown in figure 19a, can be configured to there is 4ms by the SRS configuration that partial-band sends SRS SRS sending cycle (or Interval) and 2ms sub-frame offset.ENodeB can be by partial-band by the subframe 3,7 of first frame and the subframe of the second frame 1,5 It is configured to SRS subframe.In other words, UE can be in the subframe 1,5 by the second frame after the subframe 3,7 and first frame of first frame Partial-band send SRS.As shown in Figure 19 B, it can be configured to have 4ms's by the SRS configuration that Whole frequency band sends SRS The sub-frame offset of SRS sending cycle and 0ms.ENodeB can be by Whole frequency band by the subframe 1,5,9 of first frame and the second frame Subframe 3 is configured to SRS subframe.In other words, UE can pass through the son of the second frame after the subframe 1,5,9 and first frame of first frame Whole frequency band in frame 3 sends SRS.

In each SRS configuration, it is used as due to reusing the resource sent for cell specific period SRS for SRS The resource of subframe is sent, therefore the period for sending the subframe of aperiodicity SRS can be specified and cell specific period SRS The period of frame is identical or its multiple.Although can be preset between eNodeB and UE about for being sent by partial-band The information of each subframe of SRS and each subframe for sending SRS by Whole frequency band is so that eNodeB and UE know the letter Breath, but eNodeB can also send the information to UE by high-level signaling etc..

Figure 20 shows the aperiodicity SRS configuration behaviour that the time point of aperiodicity SRS triggering authorization has been received according to UE Make the switching between the SRS of Figure 19 a-19b configuration.

ENodeB can distribute SRS resource by Whole frequency band in subframe 1,5,9, and be configured to wherein to cell spy The subframe that fixed cycle SRS resource and the specific aperiodicity SRS resource of cell are multiplexed.ENodeB can be by multiplexed sub frame SRS resource is divided into two orthogonal areas (such as two sub-bands), or by include available comb to and cyclic shift it is total collect be divided into Then the region marked off or part can be assigned as respectively periodical SRS resource and aperiodicity by two disjoint subsets SRS resource.

In Figure 20, it is assumed that being determined as the UE time point for sending aperiodicity SRS closest to reception aperiodicity SRS touching Send out the specific SRS subframe of cell of the subframe of authorization.As shown in figure 20, such as when UE receives aperiodicity SRS in subframe 2 it awards Temporary, UE can send aperiodicity SRS and the specific SRS subframe 3 that follows the cell of subframe 2 closely.Herein, due to by subframe 3 It is arranged to send the subframe of SRS by the partial-band in Figure 19 A, therefore UE is sent by the partial-band 2010 in subframe 3 Aperiodicity SRS.UE sends aperiodicity SRS by the Whole frequency band 2010 in subframe 3.In addition, when UE is received in subframe 8 When triggering authorization to aperiodicity SRS, UE passes through the specific SRS subframe 9 of cell closest to subframe 8 and sends aperiodicity SRS.This Place, since the subframe 9 for being used for SRS transmission to be arranged to send the subframe of SRS by the Whole frequency band of Figure 19 b, UE passes through Whole frequency band 2020 in subframe 7 sends aperiodicity SRS.

Herein, it reduces the region resource block (RB) and is used as in the part that allocated aperiodicity SRS can be sent to resource 2110 Rollback aperiodicity SRS resource 2115.Alternatively, can will include available comb to, cyclic shift and with aperiodicity SRS resource Total collection of disjoint resource area is divided into two disjoint subsets, then can individually be respectively defined as two subsets non- Periodical SRS resource and rollback aperiodicity SRS resource.Rollback aperiodicity SRS shown in Figure 21 a-21b sends point of resource One of Resource Allocation Formula is sent with above two rollback aperiodicity SRS is not necessarily based upon, both sides can also be based on simultaneously Case.

Partial-band aperiodicity SRS transmission scheme shown in Figure 21 a is wherein to carry out partial-band aperiodicity SRS hair The aperiodicity SRS trigger method sent, it is similar to the scheme of Figure 20.When UE has received aperiodicity SRS triggering in subframe 2 When authorization, UE can be sent non-by the partial-band 2110 of subframe 3 (closest to the cell specific period SRS subframe of subframe 2) Periodical SRS.When UE has received aperiodicity SRS triggering authorization in subframe 6, UE can be in subframe 7 (closest to subframe 6 Cell specific period SRS subframe) in send aperiodicity SRS.Herein, due to transmission underpower in subframe 7 etc. because Element, the processor 255 of UE can send SRS to switch to be sent by the SRS that rollback aperiodicity SRS sends resource 2120.

Whole frequency band aperiodicity SRS transmission scheme shown in Figure 21 b is wherein to carry out Whole frequency band aperiodicity SRS to send Aperiodicity SRS trigger method, it is similar to the scheme of Figure 20.Whole frequency band aperiodicity SRS sender shown in 1b according to fig. 2 Case, when UE has received aperiodicity SRS triggering authorization in subframe 3, UE can (cell closest to subframe 3 be special in subframe 5 Fixed cycle SRS subframe) in send aperiodicity SRS.Herein, UE can pass through rollback aperiodicity SRS resource in subframe 5 2130 send aperiodicity SRS.In addition, UE can be in son when UE has received aperiodicity SRS triggering authorization in subframe 8 SRS is sent by Whole frequency band 2140 in frame 9 (sending subframe corresponding to the cell specific period SRS closest to subframe 8).

ENodeB can be notified this SRS configuration information of Figure 21 a-21b to UE by high-level signaling.

The method that UE sends aperiodicity SRS in the Successor-generation systems of 3GPP LTE version 10 has been described above.? The purpose of introducing aperiodicity SRS is to improve the quality for the channel estimation that eNodeB is carried out in 10 system of 3GPP LTE version, And it is more acurrate more adaptively to estimate channel quality, while reducing the expense that periodical SRS is sent.

The invention proposes following new departures alternatively: when use is with periodicity SRS transmission control is carried out Different methods carries out aperiodicity SRS and sends control, is carrying out aperiodicity using various SRS trigger methods to improve The precision and efficiency of the channel estimation results of the eNodeB obtained from UE are sent when SRS is sent by aperiodicity SRS.The present invention The scheme of proposition can be applied to various aperiodicity SRS and continue environment.

Conventional SRS sends power equation and can be indicated by following equation 16.

[equation 16]

P_SRS(i)=

min{P_CMAX, P_{SRS_OFFSET}+10log₁₀(M_SRS)+P_{O_PUSCH}(j)+α(j)·PL+f(i)}[dBm]

Herein, i indicates subframe index, P_SRS(i) power of the SRS sent in subframe i (subframe that index is i) is indicated. Equation 16 include eNodeB semi-statically determine and UE is signaled by high-level signaling parameter and eNodeB dynamically It determines and transmission power control (TPC) order for passing through PDCCH signals the parameter of UE.

ENodeB passes through high-level signaling for P_{SRS_OFFSET}、M_SRS、P_{O_PUSCH(j)}, α (j) notice to UE, and by PDCCH TPC command dynamically notifies f (i) to UE.ENodeB is by P_{SRS_OFFSET}(it is the power offset values that instruction is sent for SRS Such as 4 UE special parameters) signal UE, as the value being semi-statically configured in high level.F (i) is that instruction is worked as The value of preceding PUSCH power control adjustment state, and it is represented by current absolute value or accumulated value.α (j) is eNodeB in height The cell-specific parameters for example sent as 3 place values in layer.As j=0 or 1, α ∈ 0,0.4,0.5,0.6,0.7,0.8, 0.9,1 }, and as j=2, α (j)=1.α (j) is the value that eNodeB signals UE.

P_CMAXIndicate that configured UE sends power, M_SRSThe SRS being expressed as in the subframe i of multiple resource blocks is sent Bandwidth, and eNodeB signals the P of UE_{O_PUSCH}(j) for be configured to from the cell certain nominal component that provides of high level with The UE certain components P provided from high level_{O_UE_PUSCH}The sum of (j).α (j) be eNodeB in high level as 3 value and send Cell-specific parameters.

PL is downlink path-loss (or loss of signal) estimation calculated with dB, is expressed as PL=reference signal power- High level filtering RSRP.

By redefining the configured parameter of equation 16 or new parameter being added to equation 16, periodicity SRS can define The different equatioies for sending power control with aperiodicity SRS's.

The power control equation proposed by the present invention sent for SRS can be indicated by following equation 17.

[equation 17]

Herein, V indicates the power excursion for being only applied to aperiodicity SRS transmission.ENodeB can be made V by high-level signaling UE is signaled for one or more value.When V has been arranged to single value, no matter as the cumulative enabled of UE special parameter How are the type and DCI format (0/3/3A) of value, can apply identical aperiodicity SRS power excursion always.On the other hand, when When V has been arranged to multiple values, the value aperiodicity different from the combined application of DCI format (0/3/3A) can be enabled according to cumulative Power excursion.For example, can be arranged differently than according to the type of the UE SRS sent in subframe i receive PDCCH TPC command it The power excursion applied afterwards.Herein, by P_{SRS_OFFSET}、M_SRS、P_{O_PUSCH(j)}, α (j), PL, f (i) value be jointly used in periodicity With aperiodicity SRS, and by the different value of V be applied to periodically and aperiodicity SRS.

The different power control equations sent for SRS proposed by the invention can be indicated by following equation 18.? In these power control equations, the transmission power excursion for periodical and aperiodicity SRS is calculated independently of each other completely.? I other words the H (i) of equation 17 can be redefined according to equation 18.In the operation scheme, in periodicity and aperiodicity SRS Between share P_{SRS_OFFSET}、M_SRS、P_{O_PUSCH(j)}, α (j), PL value, while not to periodicity and aperiodicity SRS application f (i) With value.

[equation 18]

Herein, A (i) and f (i) is based on identical numerical procedure, and according to DCI format (0/3/3A) and the enabled value that adds up Combine the δ of selection_PUSCHSetting that can be different from f (i) progress.The numerical procedure and δ for being totally different from f (i) can also be used_PUSCH To define A (i).

In addition, as shown in equation 18, for f (i) value in the power control equation of periodical SRS transmission and for non- F (i) value in power control equation that periodical SRS is sent is simultaneously unshared, but mutually indepedent.As in this way by f (i) it is independently applied to the embodiment that periodical SRS is sent and aperiodicity SRS is sent, the invention proposes a kind of utilizations The method of the TPC information of the DCI format sent for SRS triggering.ENodeB can be used including aperiodicity SRS trigger bit Conventional DCI format triggers the DCI format newly defined only for aperiodicity SRS as the DCI for aperiodicity SRS triggering Format.Moreover, it is assumed that the DCI format for aperiodicity SRS triggering has 2 TPC information always.In the method for proposition, ENodeB passes through 2 TPC information directly under this condition and power offset values is dynamically signaled UE.Power excursion can For absolute value or accumulated value.The power excursion only influences aperiodicity SRS and sends power control.

Another power control equation proposed by the present invention sent for SRS is represented by following equation.

[equation 19]

P_SRS(i)=

In the present solution, eNodeB signals two specific P of UE by high-level signaling_{SRS_OFFSET}Value rather than a UE Specific P_{SRS_OFFSET}Value, with the power excursion different for SRS type application.ENodeB can be sent in periodical SRS and non-week Phase property SRS send between distinguish, with signal UE periodicity SRS send and aperiodicity SRS send it is each P_{SRS_OFFSET}Value.For example, it is inclined that eNodeB can will be used for the power that periodical SRS is sent by high-level signaling in triggering type 0 Shifting value is notified to UE.In addition, eNodeB can will be used for the function of aperiodicity SRS transmission by high-level signaling in triggering Class1 Rate deviant is notified to UE.Herein, eNodeB can be sent to UE for non-by the DCI format 0/4/1A in FDD and TDD system The power offset values that periodical SRS is sent, or can be sent by the DCI format 2B/2C in TDD system to UE and be used for aperiodicity The power offset values that SRS is sent.When carrying out the triggering of (or occurring simultaneously) triggering type 0 at the same time and triggering the triggering of Class1, UE can only carry out triggering Class1 SRS and send (i.e. aperiodicity SRS transmission).

In this case, it is sent for the periodical SRS power control equation sent and for aperiodicity SRS Power control equation, which shares, removes P_{SRS_OFFSET}Except all parameters.P can be used_{O_PUSCH}Rather than P_{SRS_OFFSET}Carry out identical behaviour Make.Therefore, the processor 255 of UE can based on by high-level signaling etc. from the received function for periodicity SRS transmission of eNodeB Rate deviant and the power offset values sent for aperiodicity SRS calculate separately the uplink hair sent for periodical SRS Send performance number and aperiodicity SRS transmission power value.Another power control equation proposed by the present invention sent for SRS can The equation 20 being expressed as.

[equation 20]

P_SRS(i)=

min{P_CMAX,P_{SRS_OFFSET}+10log₁₀(M_SRS)+P_{O_PUSCH}(j)+α(j)·PL+H(i)}[dBm]

This method is mixed method, first method that a combination thereof is described above by reference to equation 17 and above by reference to equation The third method of 19 descriptions.In the method, UE can be sent different with aperiodicity SRS transmission setting for periodicity SRS Power.For example, after the power offset values sent using the setting of equation 19 for aperiodicity SRS, additionally applicable equations 17 power excursion, to increase the range of choice of deviant.In another embodiment, the non-week that can will be arranged by equation 19 Phase property SRS sends power excursion and is arranged to rough value, and can be arranged to the power excursion applied by equation 17 more smart True value, to realize power control more more detailed than conventional method.Pass through the method using equation 18 and the side using equation 19 Same advantage and result can be obtained in the combination of method.

Above embodiment is provided and combining component of the invention and feature in a particular form.It will be understood that this The component of invention is characterized in optionally, unless otherwise expressly provided.It may not need and combined with other components or feature in realization State component or feature.Embodiments of the present invention can also be provided by built-up section component and/or feature.Above in the present invention Embodiment described in operation sequence it is changeable.The certain components or feature of one embodiment can be comprised in another In embodiment, or can be by the corresponding component or character displacement of another embodiment.It is closed it should be understood that no clear subordinate can be combined The claim of system is to provide embodiment, or can increase new claim by modifying after submitting application.

It will be appreciated by those skilled in the art that can be used under the premise of without departing from spirit and substance of the present invention feature Here other particular forms except illustrating realize the present invention.Therefore, above description should be to be exemplary rather than by comprehensive understanding Limited.The scope of the present invention should be determined according to the reasonable dismissal of appended claims, and of the invention equivalent Made all changes are intended to be within the scope of the invention in range.

[industrial applicibility]

UE can be based on to non-periodic detection reference signal (SRS) triggering to send the method for SRS and control for non-week The method for the uplink transmission power that phase property SRS is sent industrially is applied to the various nothings of such as 3GPP LTE and lte-a system Line communication system.

Claims

1. a kind of method for sending non-periodic detection reference signal SRS by user equipment (UE) in a wireless communication system, the party Method the following steps are included:

Information relevant to multiple SRS of aperiodicity SRS configuration is received,

Wherein, each of the multiple SRS configuration includes the transmission comb parameter and starting physics for the aperiodicity SRS Resource block allocation of parameters；

Receive the Downlink Control Information DCI format of the triggering for aperiodic SRS transmission；And

The aperiodicity SRS is sent based on the first SRS configuration in the multiple SRS configuration,

Wherein, the 2nd SRS of the first transmission comb parameter and the aperiodic SRS transmission before being used for of the first SRS configuration Second transmission comb parameter of configuration is different, or

Wherein, the first starting Physical Resource Block allocation of parameters of the first SRS configuration is passed with the aperiodicity SRS before being used for Second starting Physical Resource Block allocation of parameters of defeated the 2nd SRS configuration is different.

2. according to the method described in claim 1, wherein, being received by high-level signaling described more with the aperiodicity SRS A SRS configures the relevant information.

3. according to the method described in claim 1, wherein, the first transmission comb parameter based on the first SRS configuration come Send the aperiodicity SRS.

4. according to the method described in claim 1, wherein, described first based on the first SRS configuration originates physical resource Block allocation of parameters sends the aperiodicity SRS.

5. according to the method described in claim 1, wherein, the DCI format includes DCI format 0.

6. a kind of user equipment (UE) for sending non-periodic detection reference signal SRS in a wireless communication system, the UE include:

Receiver, the receiver are configured as receiving information relevant to multiple SRS of aperiodicity SRS configuration,

Wherein, each of the multiple SRS configuration includes the transmission comb parameter and starting physics for the aperiodicity SRS At least one of resource block allocation of parameters,

Wherein, the receiver is additionally configured to receive the Downlink Control Information DCI lattice of the triggering for aperiodic SRS transmission Formula；And

Transmitter, the transmitter are configured as described aperiodic to send based on the first SRS configuration in the multiple SRS configuration Property SRS,

7. UE according to claim 6, wherein the receiver be additionally configured to by high-level signaling receive with it is described non- The multiple SRS of periodical SRS configures the relevant information.

8. UE according to claim 6, wherein the transmitter is additionally configured to the institute configured based on the first SRS The first transmission comb parameter is stated to send the aperiodicity SRS.

9. UE according to claim 6, wherein the first starting Physical Resource Block based on the first SRS configuration Allocation of parameters sends the aperiodicity SRS.

10. UE according to claim 6, wherein the DCI format includes DCI format 0.