CN103037521B - Up-going reference mark signal realizing method in time division synchronization code division multiple access (TD-SCDMA) system - Google Patents
Up-going reference mark signal realizing method in time division synchronization code division multiple access (TD-SCDMA) system Download PDFInfo
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Abstract
The invention discloses an up-going reference mark signal (sounding RS and SRS) realizing method in a time division synchronization code division multiple access (TD-SCDMA) system. The realizing method comprises the steps that a network side configures SRS resource information for user equipment user experience (UE), the configured SRS resource information is informed to the UE, and the UE sends the SRS according to the SRS resource information. According to the technical scheme, sending of the SRS can be achieved in the TD-SCDMA system.
Description
Technical field
The present invention relates to mobile communication technology, particularly relate to the uplink reference symbol implementation method in a kind of TD SDMA (TD-SCDMA) system.
Background technology
In mobile communication system, in order to realize high speed data transfer, introduce high-speed packet access (HSPA) technology, HSPA technology comprises high-speed slender body theory (HSDPA) technology and/or high speed uplink packet access (HSUPA) technology.
Wherein, HSUPA comprises four physical channels, namely dedicated channel (the E-DCH strengthened, Enhanced Dedicated Channel) physical uplink channel (E-PUCH, E-DCH Physical Uplink Channel), E-DCH absolute grant channel (E-AGCH, E-DCH Absolute Grant Channel), E-DCH mixed automatic re-transmission indicating channel (E-HICH, E-DCH Hybrid ARQ Indicator Channel) and E-DCH Stochastic accessing ascending control channel (E-RUCCH, E-DCH Random Access Uplink Control Channel).
In up (UL) physical layer of Long Term Evolution (LTE) system, there are two class reference symbols (Reference Signal, RS), i.e. demodulation reference mark (Demodulation RS, DM RS) and uplink reference symbol (Sounding RS, SRS).According to 3GPP standard Release 7 to Release 8 HSPA and SAE/LTE, DM RS is mainly used in the channel estimating of the physical channels such as PUSCH or PUCCH, when sending, companion data is transmitted together, and base station (Node B) carries out channel estimating with auxiliary data demodulation according to the DM RS that subscriber equipment (UE) is uploaded.SRS is mainly used in measuring quality of uplink signal, and the individual transmission when sending, the SRS information that base station (NodeB) can upload according to UE carries out channel estimating, re-starts the configuration of physical layer resources according to channel estimation results, to ensure the service quality of business.
In TD-SCDMA system, be carried on intermediate code (Midamble) territory that companion data transmits together for carrying out the symbol of uplink channel estimation, namely this symbol is that companion data is transmitted together, is namely equivalent to the MD RS in LTE system.Visible, the situation that the symbols carry still not used for uplink channel estimation in current TD-SCDMA system sends separately in Midamble territory, does not namely have SRS, does not certainly just have the implementation of corresponding SRS yet.Consider for TD-SCDMA system, based on the reciprocity of up-downgoing channel, SRS not only may be used for carrying out uplink channel estimation, and can improve the accuracy of down beam shaping.Such as, by alternately sending SRS on two antennas of UE, base station (Node B) can realize the channel estimating of UE two antenna to base station (Node B) each reception antenna, therefore can assist single/double-current selection of descending multiple-input and multiple-output (MIMO) and dual-stream beamforming process (Beamforming precoding).Therefore, in TD-SCDMA system, how realizing SRS is current urgent problem.
Summary of the invention
In view of this, provide the implementation method of the SRS in a kind of TD-SCDMA system in the present invention, to realize the transmission of SRS in TD-SCDMA system.
SRS implementation method in TD-SCDMA system provided by the present invention, comprising:
A, network side are user equipment (UE) configuration SRS resource information, and by configured SRS resource message notice to UE;
B, UE carry out the transmission of SRS according to described SRS resource information.
Preferably, described steps A comprises: in units of community, and network side is the SRS resource information that the UE of current area configures the one-to-one relationship comprising more than one SRS and setting up channel, and by described SRS resource message notice to the UE of current area;
Described step B comprises: the current UE calling certain setting up channel, according to described resource information, when sending described setting up channel, will there is the SRS of one-to-one relationship and described setting upstream channel bonding sends with described setting up channel.
Preferably, taking a step forward of described steps A comprises: base station by available SRS information reporting to RNC;
Described network side is the SRS resource information that the UE of current area configures the one-to-one relationship comprising more than one SRS and setting up channel, and described SRS resource message notice is comprised to the UE of current area: the RNC of network side is according to the information of described available SRS, UE configuration for current area comprises the SRS resource information of the one-to-one relationship of more than one SRS and setting up channel, and described SRS resource information is informed to the UE of current area by broadcast or dedicated signaling;
Comprise further between described steps A and step B: RNC by described SRS resource message notice to the base station of network side;
After described step B, comprise further: base station is according to described SRS resource information, and what send current UE receives with the SRS of described setting upstream channel bonding.
Preferably, described transmission with described setting upstream channel bonding by the SRS that there is one-to-one relationship with setting up channel comprises: when there is plural ascending time slot in the current transmission time interval TTI for sending described setting up channel, sends with the SRS setting up channel and exist one-to-one relationship on the time slot except sending the time slot of described setting up channel; Otherwise, send in the TTI of the SRS that there is one-to-one relationship with setting up channel before or after being close to current TTI.
Preferably, described transmission on the time slot except sending the time slot of described setting up channel by the SRS that there is one-to-one relationship with setting up channel comprises:
Described setting up channel is when non-6th time slot TS6 sends, and the time slot of SRS after described setting up channel that there is one-to-one relationship with described setting up channel sends; Described setting up channel is when TS6 sends, and the time slot of SRS before described setting up channel that there is one-to-one relationship with described setting up channel sends.
Preferably, described setting up channel comprises: the shared information channel HS-SICH of high speed descending sharing channel.
Preferably, described UE comprises two strip antennas;
The described transmission carrying out SRS comprises: described setting up channel and corresponding SRS are sent on two antennas respectively.
Preferably, the method comprises further:
Network side to UE send be used for SRS carry out power control transmitting power control TPC and/or for carrying out synchronous simultaneous bias SS to SRS;
UE, according to received TPC and/or SS, carries out power control and/or synchronous to the SRS sent.
Preferably, described transmission is used for carrying out the TPC of power control to SRS and/or comprising for carrying out synchronous SS to SRS:
The dedicated channel mixed automatic re-transmission indicating channel E-HICH of independent enhancing is utilized to send described TPC for carrying out power control to SRS and/or for carrying out synchronous SS to SRS; Or,
The E-HICH multiplexing with scheduled transmission is utilized to send described TPC for carrying out power control to SRS and/or for carrying out synchronous SS to SRS; Or,
The E-HICH multiplexing with non-scheduled transmission is utilized to send described TPC for carrying out power control to SRS and/or for carrying out synchronous SS to SRS.
Preferably, the E-HICH that described utilization is independent sends described for carrying out the TPC of power control to SRS and/or comprising for carrying out synchronous SS to SRS:
80 of described E-HICH signature sequences are divided into the M group of setting, utilization is often organized
the described TPC for carrying out power control to SRS of individual signature sequence carrying and/or for carrying out synchronous SS to SRS.
Preferably, the E-HICH that described utilization is multiplexing with scheduled transmission sends described for carrying out the TPC of power control to SRS and/or comprising for carrying out synchronous SS to SRS:
According to the packet mode of scheduled transmission, 80 of described E-HICH signature sequences are divided into groups, utilize described in the carrying of the signature sequence of group except the group that described scheduled transmission takies except for SRS is carried out power control TPC and/or for carrying out synchronous SS to SRS; Or,
The individual M group being divided into setting of 80-N outside the N number of signature sequence described scheduled transmission taken, utilization is often organized
the described TPC for carrying out power control to SRS of individual signature sequence carrying and/or for carrying out synchronous SS to SRS.
Preferably, the E-HICH that described utilization is multiplexing with non-scheduled transmission sends described for carrying out the TPC of power control to SRS and/or comprising for carrying out synchronous SS to SRS:
According to the packet mode of non-scheduled transmission, 80 of described E-HICH signature sequences are divided into groups, utilize except described in described non-signature sequence carrying of transferring the group transmitted except the group that takies for SRS is carried out power control TPC and/or for carrying out synchronous SS to SRS; Or,
The individual M group being divided into setting of 80-N outside the N number of signature sequence described non-scheduled transmission taken, utilization is often organized
the described TPC for carrying out power control to SRS of individual signature sequence carrying and/or for carrying out synchronous SS to SRS.
Preferably, described transmission is used for carrying out the TPC of power control to SRS and/or comprising for carrying out synchronous SS to SRS:
The vacant bit in E-HICH is utilized to send described TPC for carrying out power control to SRS and/or for carrying out synchronous SS to SRS.
As can be seen from such scheme, by in TD-SCDMA system in the present invention, be that user equipment (UE) configures SRS resource information by network side, and by configured SRS resource message notice to UE, then UE carries out the transmission of SRS according to described configuration information, thus in TD-SCDMA system, achieve the transmission of SRS.
Accompanying drawing explanation
Fig. 1 is the exemplary process diagram of the SRS implementation method in the embodiment of the present invention in TD-SCDMA system;
Fig. 2 a and Fig. 2 b is a kind of schematic flow sheet based on the SRS implementation method of user class SRS distribution in the embodiment of the present invention;
Fig. 3 a and Fig. 3 b is another schematic flow sheet based on the SRS implementation method of user class SRS distribution in the embodiment of the present invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly understand, below in conjunction with embodiment and accompanying drawing, the present invention is described in more detail.
Fig. 1 is the exemplary process diagram of the SRS implementation method in the embodiment of the present invention in TD-SCDMA system.As shown in Figure 1, this flow process comprises the steps:
Step 101, network side is user equipment (UE) configuration SRS resource information, and by configured SRS resource message notice to UE.
Wherein, according to different application scenarioss, the distribution of SRS can be divided into user class to configure (UE specific) or cell-level configuration (cell specific).Respectively two kinds of methods of salary distribution are described in detail below:
(1) user class SRS distributes: in units of UE, when UE business is initiated and is set up service connection, during as entered wireless heterogeneous networks connection (RRC Connection) state or entering cell dedicated channel status (CELL_DCH) in RRC connection status, the network equipments such as base station (Node B) or radio network controller (RNC) are that each UE distributes SRS resource by physical layer or high-level signaling, and distributed SRS resource information are indicated to corresponding UE.Wherein, when RNC be each UE distribute SRS resource time, can first by base station by the message notice of available SRS to RNC, then RNC is according to the information of this available SRS, for each UE distributes.Wherein, the information of available SRS can comprise the information such as SRS_ID and corresponding up duration.
Under normal circumstances, the SRS resource information of UE level can static configuration, also dynamic configuration.
Wherein, can comprise in the SRS resource information of static configuration: SRS label (SRS_ID), send interval (T
sRS) and by sub-frame offset (D
sRS) and slot offset amount (TS
sRS) delivery time that forms.Except comprising in the SRS resource information of dynamic-configuration: SRS_ID, T
sRS, D
sRS, TS
sRSoutward, effective time or the number of times (T of distributed SRS resource information can also be comprised
sRS_duration).Wherein, send interval and also claim transmission intercal or transmission cycle.
SRS_ID, T is provided in table 1
sRS_duration, T
sRS, D
sRSand T
sSRSone group of value and bit used (bit) number example:
Table 1
(2) cell-level SRS distributes: in units of community, network side is each cell configuration some SRS signalings, all or part of and the up channel of setting in distributed SRS signaling is set up bundle relation, such as, suppose that the up channel set is the shared information channel (HS-SICH) of high speed descending sharing channel, then SRS and HS-SICH can be set up one-to-one relationship (as SRS and the HS-SICH for having corresponding relation distributes identical ID).Afterwards, the corresponding relation between SRS and HS-SICH is informed to all UE of community, and distribute without the need to the dedicated signaling for UE.
Step 102, UE carries out the transmission of SRS according to described SRS resource information.
(1) distribute for user class SRS, the SRS resource information that corresponding UE can distribute according to network side, start Resourse Distribute timer, when reaching transmission interval, sending label at corresponding delivery time is the SRS of SRS_ID.
UE being had to the situation of two antennas, when sending SRS, normally SRS alternately being sent on two antennas.In addition, in order to ensure the accuracy of channel estimating, the transmission interval of two SRS on two antennas should be reduced as far as possible, for this reason, one can be pre-set and send interval effective time, if have any upstream data to send in the transmission interval effective time before or after current SRS place TTI for sending or time slot, then send on another antenna outside the antenna of the described upstream data of transmission of described SRS; Otherwise, send on another antenna outside the antenna of described SRS secondary SRS before sending.
(2) SRS for cell-level distributes, the UE of this community current call certain setting up channel time, the SRS resource information can distributed according to network side, when sending described setting up channel, binding sends the SRS that there is one-to-one relationship with described setting up channel.
When carrying out binding and sending, if for send setting up channel current transmission time interval (TTI) in there is two or more ascending time slot time, the SRS that there is one-to-one relationship with setting up channel is sent on the time slot except sending the time slot of this setting up channel; Otherwise, send in the TTI of the SRS that there is one-to-one relationship with setting up channel before or after being close to current TTI.
Wherein, when the SRS that there is one-to-one relationship with setting up channel is sent on the time slot except sending the time slot of this setting up channel, if setting up channel is when non-6th time slot (TS6) sends, the time slot of SRS after this setting up channel that there is one-to-one relationship with this setting up channel sends; If setting up channel is when TS6 sends, the time slot of SRS before this setting up channel that there is one-to-one relationship with this setting up channel sends.
UE is had to the situation of two antennas, when transmission exists setting up channel and the SRS of binding relationship, this setting up channel and corresponding SRS are sent respectively on two antennas.
Step 103, when satisfied stopping sends the condition of SRS, UE terminates the transmission of SRS.
(1) SRS for user class distributes, and corresponding UE can, at winding-up or when exiting service connection or exit the cell dedicated channel status of service connection, stop sending SRS to network side.Further, if SRS resource information comprises the effective time of SRS resource, then corresponding UE is before winding-up or the cell dedicated channel status that exits service connection or exit service connection, if reach the effective time of described SRS resource, then this UE stops sending SRS to network side.
(2) SRS for cell-level distributes, and UE, after the calling of end setup up channel, stops the transmission that there is with it the SRS of one-to-one relationship.
In addition, in the embodiment of the present invention, after achieving the uplink reference symbol of SRS as transmission separately, SRS can be utilized to carry out up link and keep with synchronous, therefore network needs to utilize down channel to carry simultaneous bias (SS), to carry out synchronous adjustment to SRS.And reduce its interference to adjacent area and other user for the quality of reception that ensures SRS, network side also can carry out power control to SRS, now needs to utilize down channel to carry transmitting power control (TPC).
During specific implementation, to the power control of SRS with synchronously can carry out simultaneously, also can be carried out one of them separately, namely network side can to UE send be used for SRS carry out power control TPC and/or for carrying out synchronous SS to SRS, UE, according to received TPC and/or SS, carries out power control and/or synchronous to the SRS sent.
Consider in current HSUPA system, comprise an E-HICH channel, and E-HICH channel is carried by the downlink physical channel of a spreading factor SF=16, article one, E-HICH carries 80 signature sequences, for carrying the feedback information of base station to user, such as can carrying the ACK/NACK instruction (being distinguished by orthogonal signature sequence between multiple user) of and multiple user, receiving correctness for feeding back base station when each user uplink data frame is sent by E-PUCH.
Wherein, the ACK/NACK instruction of dispatching services and non-scheduling service sends respectively on different E-HICH.For scheduling UE, E-HICH loading ACK/NACK instruction, TPC and SS instruction is carried by E-AGCH.Now, each UE distributes a signature sequence, and an E-HICH carries at most the ACK/NACK feedback information of 80 UE.For non-scheduling service, E-HICH, except loading ACK/NACK instruction, also will carry the power control for E-PUCH and synchronous TPC and SS territory.Now, 80 signature sequences can be divided into 20 groups, comprise 4 sequences in each group, high level can be each non-scheduled users and distributes one group of unique signature sequence.In these four signature sequences, first signature sequence is used to indicate ACK/NACK, and other three signature sequences are used to indicate TPC/SS order.Three inverted sequences of these three signature sequences and correspondence are classified as the possible sequence of six of being used to indicate TPC/SS coomand mode.Wherein, antitone sequence each bit 0 in sequence becomes bit 1 and each bit 1 and becomes bit 0 and obtain.
Therefore, also can consider in the present embodiment to utilize E-HICH to carry TPC and/or SS of SRS.Wherein, when often organizing signature sequence and only carrying TPC, because TPC only has two states " Down(to downward) " and " Up(is to raising) ", therefore can adopt signature sequence index as shown in table 2 and the mapping relations of TPC.
| index | TPC command |
| 0 | ′Down′ |
| 1 | ′Up′ |
Table 2
When often organizing signature sequence and only carrying SS, because SS has three states " Down(to downward) ", " Up(is to rise) " and " Do nothing(is uncomfortable) ", signature sequence index as shown in table 3 and the mapping relations of TPC therefore can be adopted.
| index | SS command |
| 00 | ′Down′ |
| 11 | ′Up′ |
| 01 | ‘Do nothing’ |
Table 3
When organizing signature sequence and carry TPC and SS simultaneously, because the two has six states, signature sequence index as shown in table 4 and the mapping relations of TPC therefore can be adopted.
| index | TPC command | SS command |
| 0 | ‘DOWN’ | ‘DOWN’ |
| 1 | ‘UP’ | ‘DOWN’ |
| 2 | ‘DOWN’ | ‘UP’ |
| 3 | ‘UP’ | ‘UP’ |
| 4 | ‘DOWN’ | ‘Do Nothing’ |
| 5 | ‘UP’ | ‘Do Nothing’ |
Table 4
The concrete methods of realizing utilizing E-HICH to carry can have multiple, enumerates wherein several below:
The first: utilize one or more independent E-HICH to send TPC and/or SS of SRS.
In this case, 80 of an E-HICH signature sequence can be divided into the M group of setting, utilization is often organized
individual signature sequence carries described TPC and/or SS.TPC and/or SS of multiple user distinguishes by orthogonal signature sequence.
The second: utilize the E-HICH multiplexing with scheduled transmission to send TPC and/or SS.
In this case, the following two kinds mode can be had:
Mode one: 80 of described E-HICH signature sequences are divided into groups according to the packet mode of scheduled transmission, utilize signature sequence carrying TPC and/or SS of the group except the group taken is transmitted in described transfer, correspondingly, in signature sequence and scheduled transmission, the mapping relations of ACK/NCK change the mapping relations with signature sequence and TPC and/or SS into.
Mode two: if scheduled transmission takies N number of signature sequence, then SRS can adopt the signature sequence packet mode different from the UE of scheduled transmission, and such as, the 80-N except the N number of signature sequence taken except scheduled transmission can be divided into the M group of setting, utilization is often organized
individual signature sequence carrying TPC and/or SS.
The third: utilize the E-HICH multiplexing with non-scheduled transmission to send TPC and/or SS.
In this case, the following two kinds mode can be had:
Mode one: divide into groups to 80 of described E-HICH signature sequences according to the packet mode of non-scheduled transmission, utilizes signature sequence carrying TPC and/or SS of the group except the group taken is transmitted in described non-transfer.
Mode two: if not scheduled transmission takies N number of signature sequence, then SRS can adopt the signature sequence packet mode different from the UE of non-scheduled transmission, such as, the 80-N except the N number of signature sequence taken except non-scheduled transmission can be divided into the M group of setting, utilization is often organized
individual signature sequence carrying TPC and/or SS.
In addition, because E-HICH comprises 8 vacant bits, in E-HICH 8 vacant bits therefore also can be utilized to carry above-mentioned TPC and/or SS.
Based on foregoing description, be assigned as example with the SRS of user class below, the SRS implementation method in TD-SCDMA system in the embodiment of the present invention is described in detail.
Fig. 2 a and Fig. 2 b is a kind of schematic flow sheet based on the SRS implementation method of user class SRS distribution in the embodiment of the present invention.Wherein, for the situation of single UE in Fig. 2 a, for the situation of multiple UE in Fig. 2 b.
See Fig. 2 a and composition graphs 2b, this flow process comprises the steps:
Step 200, base station by the information reporting of available SRS to RNC.Wherein, the information of available SRS can comprise the information such as SRS_ID and corresponding up duration.
Step 201, the RNC of network side is that current UE configuration of setting up service connection comprises SRS_ID, T
sRS, D
sRSand TS
sRSor comprise SRS_ID, T
sRS_duration, T
sRS, D
sRSand TS
sRSsRS resource information, and give corresponding UE by configured SRS resource message notice.
For the situation that there is multiple UE in Fig. 2 b, then respectively this step 201 is performed to each UE.
Step 202, the corresponding relation of the identify label (UE_ID) of described SRS resource information and this UE is informed to the Node B of network side by RNC.
For the situation that there is multiple UE in Fig. 2 b, then the corresponding relation for each SRS resource information of UE distribution and the UE_ID of corresponding UE is informed to Node B by RNC respectively.
Step 203, UE has received the confirmation of SRS resource information to RNC feedback.
For the situation that there is multiple UE in Fig. 2 b, then each UE performs this step 203 respectively.
Step 204, Node B has received the confirmation of SRS resource information and corresponding UE _ ID to RNC feedback.
For the situation that there is multiple UE in Fig. 2 b, Node B feeds back to RNC for each UE.
Step 205, UE, according to the SRS resource information of step 201, starts Resourse Distribute timer, according to T
sRS, D
sRSand T
sSRSor T
sRS_duration, T
sRS, D
sRSand TS
sRStimed sending label is the SRS of SRS_ID.
For the situation that there is multiple UE in Fig. 2 b, then each UE performs this step respectively.
Meanwhile, Node B, according to the SRS resource information of the UE_ID of the UE of step 202 and distribution, confirms the corresponding relation of UE and SRS, and it is the SRS that the UE of UE_ID sends that timing detects label.
For the situation that there is multiple UE in Fig. 2 b, then Node B performs this step respectively to each UE.
Step 206, Node B, according to the situation receiving SRS, is sent for carrying out power control and/or synchronous TPC and/or SS to UE by E-HICH.
For the situation that there is multiple UE in Fig. 2 b, then TPC and/or SS of multiple UE can be indicated to each UE by mutually orthogonal signature sequence by Node B.
Afterwards, when the service ending of UE or UE exit the RRC_DCH state that service connection or UE release service connection, or the SRS resource of UE arrives effective time, and UE stops SRS and sends.
For the situation that there is multiple UE in Fig. 2 b, each UE performs this operation according to the situation of self respectively.
Meanwhile, by signaling, Node B learns that UE stops sending SRS, or it is the SRS of SRS_ID that Node B stops detecting label according to timing SRS resource effective time, and deletes the corresponding relation that the UE that is designated UE_ID and label are the SRS of SRS_ID.
For the situation that there is multiple UE in Fig. 2 b, Node B carries out corresponding operating for each UE.
Fig. 3 a and Fig. 3 b is another schematic flow sheet based on the SRS implementation method of user class SRS distribution in the embodiment of the present invention.Wherein, for the situation of single UE in Fig. 3 a, for the situation of multiple UE in Fig. 3 b.
See Fig. 3 a and composition graphs 3b, this flow process comprises the steps:
Step 301, the Node B of network side is that current UE configuration of setting up service connection comprises SRS_ID, T
sRS, D
sRSand TS
sRSor comprise SRS_ID, T
sRS_duration, T
sRS, D
sRSand TS
sRSsRS resource information, and give corresponding UE by configured SRS resource message notice.
For the situation that there is multiple UE in Fig. 3 b, then respectively this step 201 is performed to each UE.
Step 302, UE has received the confirmation of SRS resource information to Node B feedback.
For the situation that there is multiple UE in Fig. 3 b, then each UE performs this step 302 respectively.
Step 303, UE, according to the SRS resource information of step 301, starts Resourse Distribute timer, according to T
sRS, D
sRSand TS
sRSor T
sRS_duration, T
sRS, D
sRSand TS
sRStimed sending label is the SRS of SRS_ID.
For the situation that there is multiple UE in Fig. 3 b, then each UE performs this step respectively.
Meanwhile, Node B is according to the SRS resource information of distributing for current UE, and timing detects the SRS that label is the UE transmission of UE_ID.
For the situation that there is multiple UE in Fig. 3 b, then Node B performs this step respectively to each UE.
Step 304, Node B, according to the situation receiving SRS, is sent for carrying out power control and/or synchronous TPC and/or SS to UE by E-HICH.
For the situation that there is multiple UE in Fig. 3 b, then TPC and/or SS of multiple UE can be indicated to each UE by mutually orthogonal signature sequence by Node B.
Afterwards, the service ending of UE or UE exit the RRC_DCH state of service connection or UE release service connection, or the SRS resource of UE arrives effective time, and UE stops SRS and sends.
For the situation that there is multiple UE in Fig. 3 b, each UE performs this step 306 according to the situation of self respectively.
Meanwhile, by signaling, Node B learns that UE stops sending SRS, or it is the SRS of SRS_ID that Node B stops detecting label according to timing SRS resource effective time, and deletes the corresponding relation that the UE that is designated UE_ID and label are the SRS of SRS_ID.
For the situation that there is multiple UE in Fig. 3 b, Node B carries out corresponding operating for each UE.
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only preferred embodiment of the present invention; be not intended to limit protection scope of the present invention; within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. the uplink reference symbol SRS implementation method in TD SDMA TD-SCDMA system, it is characterized in that, the method comprises:
A, network side are user equipment (UE) configuration SRS resource information, and by configured SRS resource message notice to UE;
B, UE carry out the transmission of SRS according to described SRS resource information;
Described steps A comprises: in units of community, and network side is the SRS resource information that the UE of current area configures the one-to-one relationship comprising more than one SRS and setting up channel, and by described SRS resource message notice to the UE of current area;
Described step B comprises: the current UE calling certain setting up channel, according to described resource information, when sending described setting up channel, will there is the SRS of one-to-one relationship and described setting upstream channel bonding sends with described setting up channel.
2. the method for claim 1, is characterized in that, taking a step forward of described steps A comprises: base station by available SRS information reporting to RNC;
Described network side is the SRS resource information that the UE of current area configures the one-to-one relationship comprising more than one SRS and setting up channel, and described SRS resource message notice is comprised to the UE of current area: the RNC of network side is according to the information of described available SRS, UE configuration for current area comprises the SRS resource information of the one-to-one relationship of more than one SRS and setting up channel, and described SRS resource information is informed to the UE of current area by broadcast or dedicated signaling;
Comprise further between described steps A and step B: RNC by described SRS resource message notice to the base station of network side;
After described step B, comprise further: base station is according to described SRS resource information, and what send current UE receives with the SRS of described setting upstream channel bonding.
3. the method for claim 1, it is characterized in that, described transmission with described setting upstream channel bonding by the SRS that there is one-to-one relationship with setting up channel comprises: when there is plural ascending time slot in the current transmission time interval TTI for sending described setting up channel, sends with the SRS setting up channel and exist one-to-one relationship on the time slot except sending the time slot of described setting up channel; Otherwise, send in the TTI of the SRS that there is one-to-one relationship with setting up channel before or after being close to current TTI.
4. method as claimed in claim 3, is characterized in that, described transmission on the time slot except sending the time slot of described setting up channel by the SRS that there is one-to-one relationship with setting up channel comprises:
Described setting up channel is when non-6th time slot TS6 sends, and the time slot of SRS after described setting up channel that there is one-to-one relationship with described setting up channel sends; Described setting up channel is when TS6 sends, and the time slot of SRS before described setting up channel that there is one-to-one relationship with described setting up channel sends.
5. the method according to any one of Claims 1-4, is characterized in that, described setting up channel comprises: the shared information channel HS-SICH of high speed descending sharing channel.
6. the method according to any one of Claims 1-4, is characterized in that, described UE comprises two strip antennas;
The described transmission carrying out SRS comprises: described setting up channel and corresponding SRS are sent on two antennas respectively.
7. the method according to any one of Claims 1-4, is characterized in that, the method comprises further:
Network side to UE send be used for SRS carry out power control transmitting power control TPC and/or for carrying out synchronous simultaneous bias SS to SRS;
UE, according to received TPC and/or SS, carries out power control and/or synchronous to the SRS sent.
8. method as claimed in claim 7, is characterized in that, described transmission is used for carrying out the TPC of power control to SRS and/or comprising for carrying out synchronous SS to SRS:
The dedicated channel mixed automatic re-transmission indicating channel E-HICH of independent enhancing is utilized to send described TPC for carrying out power control to SRS and/or for carrying out synchronous SS to SRS; Or,
The E-HICH multiplexing with scheduled transmission is utilized to send described TPC for carrying out power control to SRS and/or for carrying out synchronous SS to SRS; Or,
The E-HICH multiplexing with non-scheduled transmission is utilized to send described TPC for carrying out power control to SRS and/or for carrying out synchronous SS to SRS.
9. method as claimed in claim 8, is characterized in that, for carrying out the TPC of power control to SRS and/or comprising for carrying out synchronous SS to SRS described in the E-HICH transmission that described utilization is independent:
80 of described E-HICH signature sequences are divided into the M group of setting, utilization is often organized
the described TPC for carrying out power control to SRS of individual signature sequence carrying and/or for carrying out synchronous SS to SRS.
10. method as claimed in claim 8, is characterized in that, for carrying out the TPC of power control to SRS and/or comprising for carrying out synchronous SS to SRS described in the described utilization E-HICH multiplexing with scheduled transmission sends:
According to the packet mode of scheduled transmission, 80 of described E-HICH signature sequences are divided into groups, utilize described in the carrying of the signature sequence of group except the group that described scheduled transmission takies except for SRS is carried out power control TPC and/or for carrying out synchronous SS to SRS; Or,
The individual M group being divided into setting of 80-N outside the N number of signature sequence described scheduled transmission taken, utilization is often organized
the described TPC for carrying out power control to SRS of individual signature sequence carrying and/or for carrying out synchronous SS to SRS.
11. methods as claimed in claim 8, is characterized in that, the described utilization E-HICH multiplexing with non-scheduled transmission sends described for carrying out the TPC of power control to SRS and/or comprising for carrying out synchronous SS to SRS:
According to the packet mode of non-scheduled transmission, 80 of described E-HICH signature sequences are divided into groups, utilize except described in described non-signature sequence carrying of transferring the group transmitted except the group that takies for SRS is carried out power control TPC and/or for carrying out synchronous SS to SRS; Or,
The individual M group being divided into setting of 80-N outside the N number of signature sequence described non-scheduled transmission taken, utilization is often organized
the described TPC for carrying out power control to SRS of individual signature sequence carrying and/or for carrying out synchronous SS to SRS.
12. methods as claimed in claim 7, is characterized in that, described transmission is used for carrying out the TPC of power control to SRS and/or comprising for carrying out synchronous SS to SRS:
The vacant bit in E-HICH is utilized to send described TPC for carrying out power control to SRS and/or for carrying out synchronous SS to SRS.
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| CN101330325A (en) * | 2008-07-29 | 2008-12-24 | 中兴通讯股份有限公司 | Transmission method for upstream channel measuring reference signal |
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