CN103037521A - 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, relate in particular 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, introduced high-speed packet access (HSPA) technology, the HSPA technology comprises high speed downlink packet access (HSDPA) technology and/or high speed uplink packet access (HSUPA) technology.
Wherein, HSUPA comprises four physical channels, dedicated channel (the E-DCH that namely strengthens, 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 access at random ascending control channel (E-RUCCH, E-DCH Random Access Uplink Control Channel).
In up (UL) of Long Term Evolution (LTE) system physical layer, two class reference symbols (Reference Signal, RS) are arranged, 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 as can be known, DM RS is mainly used in the channel estimating of the physical channels such as PUSCH or PUCCH, companion data is transmitted together when sending, and the DM RS that base station (Node B) uploads according to subscriber equipment (UE) carries out channel estimating with the auxiliary data demodulation.SRS is mainly used in measuring quality of uplink signal, individual transmission when sending, and base station (NodeB) can carry out channel estimating according to the SRS information that UE uploads, and re-starts the configuration of physical layer resources according to channel estimation results, to guarantee professional service quality.
In the TD-SCDMA system, the symbol that is used for carrying out uplink channel estimation is to be carried on intermediate code (Midamble) territory that companion data transmits together, and namely this symbol is that companion data is transmitted together, namely is equivalent to the MD RS in the LTE system.As seen, still be not used for the situation of symbols carry independent transmission in the Midamble territory of uplink channel estimation in the present TD-SCDMA system, namely do not have SRS, certainly also just do not have the implementation of corresponding SRS.Consider the system for TD-SCDMA, based on the reciprocity of up-downgoing channel, SRS not only can be used for carrying out uplink channel estimation, and can improve the accuracy of down beam shaping.For example, by on two antennas of UE, alternately sending SRS, the channel estimating of UE two antennas (Node B) each reception antenna to the base station can be realized in base station (Node B), therefore can assist descending multiple-input and multiple-output (MIMO) list/double fluid to select and dual-stream beamforming processing (Beamforming precoding).Therefore, how to realize that in the TD-SCDMA system SRS is present urgent problem.
Summary of the invention
In view of this, provide the SRS implementation method in a kind of TD-SCDMA system among the present invention, in order in the TD-SCDMA system, realize the transmission of SRS.
SRS implementation method in the TD-SCDMA provided by the present invention system comprises:
A, network side are user equipment (UE) configuration SRS resource information, and the SRS resource information that disposes is notified to UE;
B, UE carry out the transmission of SRS according to described SRS resource information.
Preferably, described steps A comprises: be that take the residential quarter unit, network side are the SRS resource information that the UE configuration of current area comprises more than one SRS and the one-to-one relationship of setting up channel, and notify UE to current area with described SRS resource information;
Described step B comprises: the current UE that calls certain setting up channel according to described resource information, when sending described setting up channel, will exist the SRS of one-to-one relationship and described setting upstream channel bonding to send with described setting up channel.
Preferably, further comprise before the described steps A: the base station with available SRS information reporting to RNC;
Described network side is the SRS resource information that the UE configuration of current area comprises the one-to-one relationship of more than one SRS and setting up channel, and notify the UE to current area to comprise the described SRS resource information: the RNC of network side is according to the information of described available SRS, for the UE of current area configuration comprises the SRS resource information of more than one SRS and the one-to-one relationship of setting up channel, and notify UE to current area with described SRS resource information by broadcast or dedicated signaling;
Further comprise between described steps A and the step B: RNC notifies base station to network side with described SRS resource information;
After the described step B, further comprise: the base station is according to described SRS resource information, and the SRS with described setting upstream channel bonding that current UE is sent receives.
Preferably, described will the transmission with described setting upstream channel bonding with the SRS that sets up channel and exist one-to-one relationship comprises: when within being used for sending the current transmission time interval TTI of described setting up channel, having plural ascending time slot, will with set up channel and exist the SRS of one-to-one relationship to send at the time slot except the time slot of the described setting up channel of transmission; Otherwise, will with set the SRS that there is one-to-one relationship in up channel with the current TTI next-door neighbour before or after TTI in send.
Preferably, described will with set up channel and exist the SRS of one-to-one relationship to comprise in the transmission of the time slot except the time slot that sends described setting up channel:
When described setting up channel sends at non-the 6th time slot TS6, exist the time slot of SRS after described setting up channel of one-to-one relationship to send with described setting up channel; Described setting up channel exists the time slot of SRS before described setting up channel of one-to-one relationship to send with described setting up channel when TS6 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 of carrying out SRS comprises: described setting up channel and corresponding SRS are sent at two antennas respectively.
Preferably, the method further comprises:
Network side sends for the through-put power control TPC that SRS is carried out power control and/or for SRS is carried out synchronous simultaneous bias SS to UE;
UE carries out power control and/or synchronous according to the TPC that receives and/or SS to the SRS that sends.
Preferably, described transmission is used for SRS is carried out the TPC of power control and/or be used for that SRS is carried out synchronous SS comprising:
Utilize the dedicated channel mixed automatic re-transmission indicating channel E-HICH of independent enhancing send described for SRS being carried out power control TPC and/or be used for SRS is carried out synchronous SS; Perhaps,
Utilize with the multiplexing E-HICH of scheduled transmission send described for SRS being carried out power control TPC and/or be used for SRS is carried out synchronous SS; Perhaps,
Utilize with the multiplexing E-HICH of non-scheduled transmission send described for SRS being carried out power control TPC and/or be used for SRS is carried out synchronous SS.
Preferably, the independent E-HICH of described utilization send described for SRS being carried out power control TPC and/or be used for that SRS is carried out synchronous SS and comprise:
80 signature sequences of described E-HICH are divided into the M group of setting, utilize every group
The carrying of individual signature sequence described for SRS being carried out power control TPC and/or be used for SRS is carried out synchronous SS.
Preferably, the multiplexing E-HICH of described utilization and scheduled transmission send described for SRS being carried out power control TPC and/or be used for that SRS is carried out synchronous SS and comprise:
Divide into groups according to the packet mode of scheduled transmission 80 signature sequences to described E-HICH, utilize the signature sequence carrying of the group except the group that described scheduled transmission takies described for SRS being carried out power control TPC and/or for SRS is carried out synchronous SS; Perhaps,
80-N outside N the signature sequence that described scheduled transmission is taken M group that is divided into setting utilized every group
The carrying of individual signature sequence described for SRS being carried out power control TPC and/or be used for SRS is carried out synchronous SS.
Preferably, the multiplexing E-HICH of described utilization and non-scheduled transmission send described for SRS being carried out power control TPC and/or be used for that SRS is carried out synchronous SS and comprise:
Divide into groups according to the packet mode of non-scheduled transmission 80 signature sequences to described E-HICH, utilize the signature sequence carrying of the group the group that takies except described non-transfer transmission described for SRS being carried out power control TPC and/or for SRS is carried out synchronous SS; Perhaps,
80-N outside N the signature sequence that described non-scheduled transmission is taken M group that is divided into setting utilized every group
The carrying of individual signature sequence described for SRS being carried out power control TPC and/or be used for SRS is carried out synchronous SS.
Preferably, described transmission is used for SRS is carried out the TPC of power control and/or be used for that SRS is carried out synchronous SS comprising:
Utilize vacant bit among the E-HICH send described for SRS being carried out power control TPC and/or be used for SRS is carried out synchronous SS.
Can find out from such scheme, pass through in the TD-SCDMA system among the present invention, be user equipment (UE) configuration SRS resource information by network side, and the SRS resource information that disposes notified to UE, then UE carries out the transmission of SRS according to described configuration information, thereby has realized the transmission of SRS in the TD-SCDMA system.
Description of drawings
Fig. 1 is the exemplary process diagram of the SRS implementation method in the TD-SCDMA system in the embodiment of the invention;
Fig. 2 a and Fig. 2 b are a kind of schematic flow sheet of the SRS implementation method of distributing based on user class SRS in the embodiment of the invention;
Fig. 3 a and Fig. 3 b are another schematic flow sheet of the SRS implementation method of distributing based on user class SRS in the embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, 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 TD-SCDMA system in the embodiment of the invention.As shown in Figure 1, this flow process comprises the steps:
Wherein, according to different application scenarioss, the distribution of SRS can be divided into user class configuration (UE specific) or cell-level configuration (cell specific).The below is described in detail two kinds of methods of salary distribution respectively:
(1) user class SRS distributes: take UE as unit, when the UE business is initiated and is set up service connection, as when entering Radio Resource control connection (RRC Connection) state or entering cell dedicated channel status (CELL_DCH) in the RRC connection status, the network equipments such as base station (Node B) or radio network controller (RNC) are each UE distribution SRS resource by physical layer or high-level signaling, and the SRS resource information of distributing is indicated UE to correspondence.Wherein, when RNC distributes the SRS resource for each UE, can at first by the base station information of available SRS be notified 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.
Generally, but the SRS resource information static configuration of UE level, also capable of dynamic configuration.
Wherein, can comprise in the SRS resource information of static configuration: SRS label (SRS_ID), transmission interval (T
SRS) and by sub-frame offset (D
SRS) and slot offset amount (TS
SRS) delivery time that forms.In the SRS resource information of dynamic-configuration except comprising: SRS_ID, T
SRS, D
SRS, TS
SRSEffective time or the number of times (T that also can comprise the SRS resource information of distributing outward,
SRS_duration).Wherein, send the interval and also claim transmission intercal or transmission cycle.
Provide SRS_ID, T in the table 1
SRS_duration, T
SRS, D
SRSAnd T
SSRSOne group of value and the example of used bit (bit) number:
Table 1
(2) cell-level SRS distributes: take the residential quarter as unit, network side is some SRS signalings of each cell configuration, the all or part of and up channel of setting in the SRS signaling of distributing is set up bundle relation, for example, suppose that the up channel of setting 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 distributing identical ID for SRS and the HS-SICH with corresponding relation).Afterwards, notify all UE to the residential quarter with the corresponding relation between SRS and the HS-SICH, and need not to distribute for the dedicated signaling of UE.
(1) for user class SRS distribution, corresponding UE can start resource and distribute timer according to the SRS resource information of network side distribution, and when reaching the transmission interval, sending label at corresponding delivery time is the SRS of SRS_ID.
Have the situation of two antennas for UE, when sending SRS, normally SRS is alternately sent at two antennas.In addition, in order to guarantee the accuracy of channel estimating, answer the transmission interval of reduce two SRS on two antennas, for this reason, can set in advance one and send interval effective time, if the SRS place TTI that current wish sends or the transmission interval before or after the time slot have any upstream data to send in effective time, then described SRS another antenna outside the antenna that sends described upstream data is sent; Otherwise, described SRS is sent at another antenna that sends outside the antenna of SRS last time.
(2) SRS for cell-level distributes, the UE of this residential quarter is current when calling certain and setting up channel, can be according to the SRS resource information of network side distribution, when sending described setting up channel, binding sends the SRS that has one-to-one relationship with described setting up channel.
When binding transmission, if be used for sending when having two or more ascending time slot in the current transmission time interval (TTI) of setting up channel, will exist the SRS of one-to-one relationship to send at the time slot except the time slot that sends this setting up channel with the setting up channel; Otherwise, will with set the SRS that there is one-to-one relationship in up channel with the current TTI next-door neighbour before or after TTI in send.
Wherein, to exist the SRS of one-to-one relationship when the time slot except the time slot that sends this setting up channel sends with the setting up channel, if set up channel when non-the 6th time slot (TS6) sends, exist the time slot of SRS after this setting up channel of one-to-one relationship to send with this setting up channel; If set up channel when TS6 sends, exist the time slot of SRS before this setting up channel of one-to-one relationship to send with this setting up channel.
Have the situation of two antennas for UE, when transmission exists the setting up channel of binding relationship and SRS, this setting up channel and corresponding SRS are sent at two antennas respectively.
Step 103 is satisfying when stopping to send the condition of SRS, and UE finishes the transmission of SRS.
(1) SRS for user class distributes, and when corresponding UE can or withdraw from service connection or withdraw from the cell dedicated channel status of service connection at winding-up, stops sending SRS to network side.Further, if comprise the effective time of SRS resource in the SRS resource information, then corresponding UE is at winding-up or before withdrawing from service connection or withdrawing from the cell dedicated channel status of service connection, if reach the effective time of described SRS resource, then this UE stops sending SRS to network side.
(2) distribute for the SRS of cell-level, UE stops to exist with it the transmission of the SRS of one-to-one relationship after the calling of end setup up channel.
In addition, in the embodiment of the invention, after having realized that SRS is as the uplink reference symbol that sends separately, can utilize SRS to carry out that up link keeps and synchronously, so network need to utilize down channel carrying simultaneous bias (SS), so that SRS is adjusted synchronously.And be to guarantee the quality of reception of SRS and reduce it to adjacent area and other user's interference, network side also can carry out power control to SRS, need to utilize this moment down channel carrying through-put power to control (TPC).
During specific implementation, to the power control of SRS with can carry out simultaneously synchronously, also can carry out separately one of them, be that network side can send for the TPC that SRS is carried out power control and/or for SRS is carried out synchronous SS to UE, UE carries out power control and/or synchronous according to the TPC that receives and/or SS to the SRS that sends.
Consider in present HSUPA system, comprise an E-HICH channel, and the E-HICH channel is by the downlink physical channel carrying of a spreading factor SF=16, article one, E-HICH carries 80 signature sequences, be used for the carrying base station to user's feedback information, for example can carry one and a plurality of users' ACK/NACK indication (signature sequence by quadrature between a plurality of users is distinguished), reception correctness in base station when being used for each user uplink data frame of feedback and sending by E-PUCH.
Wherein, the ACK/NACK of dispatching services and non-scheduling service indication sends at different E-HICH respectively.For scheduling UE, E-HICH loading ACK/NACK indication, TPC and SS indication are carried by E-AGCH.At this moment, 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 also will carry for the power control of E-PUCH and synchronous TPC and SS territory except loading ACK/NACK indication.At this moment, 80 signature sequences can be divided into 20 groups, comprise 4 sequences in each group, high level can be one group of unique signature sequence of each non-scheduled user assignment.In these four signature sequences, first signature sequence is used to indicate ACK/NACK, and other three signature sequences are used to indicate the TPC/SS order.These three signature sequences and three corresponding inverted sequences are classified six possible sequences that are used to indicate the TPC/SS coomand mode as.Wherein, antitone sequence becomes bit 1 and each bit 1 by each bit 0 in the sequence and becomes bit 0 and obtain.
Therefore, also can consider the TPC and/or the SS that utilize E-HICH to carry SRS in the present embodiment.Wherein, when every group of signature sequence only carries TPC, because TPC only has two states " Down(to downward modulation) " and " Up(is to raising) ", so 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 every group of signature sequence only carries SS, because SS has three states " Down(to downward modulation) ", " Up(is to raising) " and " Do nothing(is uncomfortable) ", so can adopt signature sequence index as shown in table 3 and the mapping relations of TPC.
| index | SS command |
| 00 | ′Down′ |
| 11 | ′Up′ |
| 01 | ‘Do nothing’ |
Table 3
When the group signature sequence carries TPC and SS simultaneously, because the two has six states, therefore can adopt signature sequence index as shown in table 4 and the mapping relations of TPC.
| 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 that utilizes E-HICH to carry can have multiple, and the below enumerates wherein several:
The first: utilize one or more independent E-HICH to send TPC and/or the SS of SRS.
In this case, 80 signature sequences of E-HICH can be divided into the M group of setting, utilize every group
Individual signature sequence carries described TPC and/or SS.A plurality of users' TPC and/or SS can distinguish by the signature sequence of quadrature.
The second: utilize E-HICH transmission TPC and/or the SS multiplexing with scheduled transmission.
In this case, following dual mode can be arranged:
Mode one: divide into groups according to the packet mode of scheduled transmission 80 signature sequences to described E-HICH, utilize signature sequence carrying TPC and/or the SS of the group the group that takies except described transfer transmission, correspondingly, the mapping relations of ACK/NCK change mapping relations with signature sequence and TPC and/or SS in signature sequence and the scheduled transmission.
Mode two: if scheduled transmission takies N signature sequence, then SRS can adopt the signature sequence packet mode different from the UE of scheduled transmission, for example, the 80-N N the signature sequence that takies except scheduled transmission can be divided into the M group of setting, utilizes every group
Individual signature sequence carrying TPC and/or SS.
The third: utilize E-HICH transmission TPC and/or the SS multiplexing with non-scheduled transmission.
In this case, following dual mode can be arranged:
Mode one: divide into groups according to the packet mode of non-scheduled transmission 80 signature sequences to described E-HICH, utilize the signature sequence of the group the group that takies except described non-transfer transmission to carry TPC and/or SS.
Mode two: if not scheduled transmission takies N signature sequence, then SRS can adopt the signature sequence packet mode different from the UE of non-scheduled transmission, for example, unless the 80-N outside N the signature sequence that scheduled transmission can be taken is divided into the M group of setting, utilize every group
Individual signature sequence carrying TPC and/or SS.
In addition, owing to comprise 8 vacant bits among the E-HICH, therefore also can utilize 8 above-mentioned TPC and/or SS of vacant bit carrying among the E-HICH.
Based on foregoing description, the below is assigned as example with the SRS of user class, and the SRS implementation method in the TD-SCDMA system in the embodiment of the invention is described in detail.
Fig. 2 a and Fig. 2 b are a kind of schematic flow sheet of the SRS implementation method of distributing based on user class SRS in the embodiment of the invention.Wherein, among Fig. 2 a take the situation of single UE as example, among Fig. 2 b take the situation of a plurality of UE as example.
Referring to Fig. 2 a and in conjunction with Fig. 2 b, this flow process comprises the steps:
Step 200, base station with 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
SRSThe SRS resource information, and notify UE to correspondence with the SRS resource information that disposes.
For the situation that has a plurality of UE among Fig. 2 b, then each UE is carried out respectively this step 201.
Step 202, RNC notifies Node B to network side with the corresponding relation of the identify label (UE_ID) of described SRS resource information and this UE.
For the situation that has a plurality of UE among Fig. 2 b, then the corresponding relation of the UE_ID of the SRS resource information that will distribute for each UE of RNC and corresponding UE is notified respectively the B to Node.
Step 203, UE has received the affirmation information of SRS resource information to the RNC feedback.
For the situation that has a plurality of UE among Fig. 2 b, then each UE carries out respectively this step 203.
Step 204, Node B has received the affirmation information of SRS resource information and corresponding UE _ ID to the RNC feedback.
For the situation that has a plurality of UE among Fig. 2 b, Node B feeds back to RNC for each UE.
Step 205, UE starts resource and distributes timer, according to T according to the SRS resource information of step 201
SRS, D
SRSAnd T
SSRSOr T
SRS_duration, T
SRS, D
SRSAnd TS
SRSThe timed sending label is the SRS of SRS_ID.
For the situation that has a plurality of UE among Fig. 2 b, then each UE carries out respectively this step.
Simultaneously, Node B confirms the corresponding relation of UE and SRS according to the UE_ID of the UE of step 202 and the SRS resource information of distribution, and regularly detecting label is the SRS of the UE transmission of UE_ID.
For the situation that has a plurality of UE among Fig. 2 b, then Node B carries out respectively this step to each UE.
Step 206, Node B sends for carrying out power control and/or synchronous TPC and/or SS to UE by E-HICH according to the situation that receives SRS.
For the situation that has a plurality of UE among Fig. 2 b, then Node B can indicate TPC and/or the SS of a plurality of UE to each UE by mutually orthogonal signature sequence.
Afterwards, when the RRC_DCH state that service ending or the UE of UE withdraw from service connection or UE release service connection, perhaps the SRS resource of UE arrives effective time, and UE stops SRS and sends.
For the situation that has a plurality of UE among Fig. 2 b, each UE carries out this operation according to the situation of self respectively.
Simultaneously, Node B learns that by signaling UE stop to send SRS, and perhaps, Node B regularly stops to detect the SRS that label is SRS_ID according to the SRS resource effective time, and UE and label that deletion is designated UE_ID are the corresponding relation of the SRS of SRS_ID.
For the situation that has a plurality of UE among Fig. 2 b, Node B carries out corresponding operating for each UE.
Fig. 3 a and Fig. 3 b are another schematic flow sheet of the SRS implementation method of distributing based on user class SRS in the embodiment of the invention.Wherein, among Fig. 3 a take the situation of single UE as example, among Fig. 3 b take the situation of a plurality of UE as example.
Referring to Fig. 3 a and in conjunction with Fig. 3 b, 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
SRSThe SRS resource information, and notify UE to correspondence with the SRS resource information that disposes.
For the situation that has a plurality of UE among Fig. 3 b, then each UE is carried out respectively this step 201.
Step 302, UE has received the affirmation information of SRS resource information to Node B feedback.
For the situation that has a plurality of UE among Fig. 3 b, then each UE carries out respectively this step 302.
Step 303, UE starts resource and distributes timer, according to T according to the SRS resource information of step 301
SRS, D
SRSAnd TS
SRSOr T
SRS_duration, T
SRS, D
SRSAnd TS
SRSThe timed sending label is the SRS of SRS_ID.
For the situation that has a plurality of UE among Fig. 3 b, then each UE carries out respectively this step.
Simultaneously, Node B is according to the SRS resource information of distributing for current UE, and regularly detecting label is the SRS of the UE transmission of UE_ID.
For the situation that has a plurality of UE among Fig. 3 b, then Node B carries out respectively this step to each UE.
Step 304, Node B sends for carrying out power control and/or synchronous TPC and/or SS to UE by E-HICH according to the situation that receives SRS.
For the situation that has a plurality of UE among Fig. 3 b, then Node B can indicate TPC and/or the SS of a plurality of UE to each UE by mutually orthogonal signature sequence.
Afterwards, the service ending of UE or UE withdraw from the RRC_DCH state of service connection or UE release service connection, and perhaps the SRS resource of UE arrives effective time, and UE stops SRS and sends.
For the situation that has a plurality of UE among Fig. 3 b, each UE carries out this step 306 according to the situation of self respectively.
Simultaneously, Node B learns that by signaling UE stop to send SRS, and perhaps, Node B regularly stops to detect the SRS that label is SRS_ID according to the SRS resource effective time, and UE and label that deletion is designated UE_ID are the corresponding relation of the SRS of SRS_ID.
For the situation that has a plurality of UE among Fig. 3 b, Node B carries out corresponding operating for each UE.
Above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above only is preferred embodiment of the present invention; be not for limiting protection scope of the present invention; within the spirit and principles in the present invention all, any modification of doing, be equal to 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 the TD SDMA TD-SCDMA system is characterized in that the method comprises:
A, network side are user equipment (UE) configuration SRS resource information, and the SRS resource information that disposes is notified to UE;
B, UE carry out the transmission of SRS according to described SRS resource information;
Described steps A comprises: be that take the residential quarter unit, network side are the SRS resource information that the UE configuration of current area comprises more than one SRS and the one-to-one relationship of setting up channel, and notify UE to current area with described SRS resource information;
Described step B comprises: the current UE that calls certain setting up channel according to described resource information, when sending described setting up channel, will exist the SRS of one-to-one relationship and described setting upstream channel bonding to send with described setting up channel.
2. the method for claim 1 is characterized in that, further comprises before the described steps A: the base station with available SRS information reporting to RNC;
Described network side is the SRS resource information that the UE configuration of current area comprises the one-to-one relationship of more than one SRS and setting up channel, and notify the UE to current area to comprise the described SRS resource information: the RNC of network side is according to the information of described available SRS, for the UE of current area configuration comprises the SRS resource information of more than one SRS and the one-to-one relationship of setting up channel, and notify UE to current area with described SRS resource information by broadcast or dedicated signaling;
Further comprise between described steps A and the step B: RNC notifies base station to network side with described SRS resource information;
After the described step B, further comprise: the base station is according to described SRS resource information, and the SRS with described setting upstream channel bonding that current UE is sent receives.
3. the method for claim 1, it is characterized in that, described will the transmission with described setting upstream channel bonding with the SRS that sets up channel and exist one-to-one relationship comprises: when within being used for sending the current transmission time interval TTI of described setting up channel, having plural ascending time slot, will with set up channel and exist the SRS of one-to-one relationship to send at the time slot except the time slot of the described setting up channel of transmission; Otherwise, will with set the SRS that there is one-to-one relationship in up channel with the current TTI next-door neighbour before or after TTI in send.
4. method as claimed in claim 3 is characterized in that, described will with set up channel and exist the SRS of one-to-one relationship to comprise in the transmission of the time slot except the time slot that sends described setting up channel:
When described setting up channel sends at non-the 6th time slot TS6, exist the time slot of SRS after described setting up channel of one-to-one relationship to send with described setting up channel; Described setting up channel exists the time slot of SRS before described setting up channel of one-to-one relationship to send with described setting up channel when TS6 sends.
5. such as each described method in the claim 1 to 4, it is characterized in that described setting up channel comprises: the shared information channel HS-SICH of high speed descending sharing channel.
6. such as each described method in the claim 1 to 4, it is characterized in that described UE comprises two strip antennas;
The described transmission of carrying out SRS comprises: described setting up channel and corresponding SRS are sent at two antennas respectively.
7. such as each described method in the claim 1 to 4, it is characterized in that the method further comprises:
Network side sends for the through-put power control TPC that SRS is carried out power control and/or for SRS is carried out synchronous simultaneous bias SS to UE;
UE carries out power control and/or synchronous according to the TPC that receives and/or SS to the SRS that sends.
8. method as claimed in claim 7 is characterized in that, described transmission is used for SRS is carried out the TPC of power control and/or be used for that SRS is carried out synchronous SS comprising:
Utilize the dedicated channel mixed automatic re-transmission indicating channel E-HICH of independent enhancing send described for SRS being carried out power control TPC and/or be used for SRS is carried out synchronous SS; Perhaps,
Utilize with the multiplexing E-HICH of scheduled transmission send described for SRS being carried out power control TPC and/or be used for SRS is carried out synchronous SS; Perhaps,
Utilize with the multiplexing E-HICH of non-scheduled transmission send described for SRS being carried out power control TPC and/or be used for SRS is carried out synchronous SS.
9. method as claimed in claim 7 is characterized in that, the independent E-HICH of described utilization send described for SRS being carried out power control TPC and/or be used for that SRS is carried out synchronous SS and comprise:
80 signature sequences of described E-HICH are divided into the M group of setting, utilize every group
The carrying of individual signature sequence described for SRS being carried out power control TPC and/or be used for SRS is carried out synchronous SS.
10. method as claimed in claim 7 is characterized in that, the multiplexing E-HICH of described utilization and scheduled transmission send described for SRS being carried out power control TPC and/or be used for that SRS is carried out synchronous SS and comprise:
Divide into groups according to the packet mode of scheduled transmission 80 signature sequences to described E-HICH, utilize the signature sequence carrying of the group except the group that described scheduled transmission takies described for SRS being carried out power control TPC and/or for SRS is carried out synchronous SS; Perhaps,
80-N outside N the signature sequence that described scheduled transmission is taken M group that is divided into setting utilized every group
The carrying of individual signature sequence described for SRS being carried out power control TPC and/or be used for SRS is carried out synchronous SS.
11. method as claimed in claim 8 is characterized in that, the multiplexing E-HICH of described utilization and non-scheduled transmission send described for SRS being carried out power control TPC and/or be used for that SRS is carried out synchronous SS and comprise:
Divide into groups according to the packet mode of non-scheduled transmission 80 signature sequences to described E-HICH, utilize the signature sequence carrying of the group the group that takies except described non-transfer transmission described for SRS being carried out power control TPC and/or for SRS is carried out synchronous SS; Perhaps,
80-N outside N the signature sequence that described non-scheduled transmission is taken M group that is divided into setting utilized every group
The carrying of individual signature sequence described for SRS being carried out power control TPC and/or be used for SRS is carried out synchronous SS.
12. method as claimed in claim 7 is characterized in that, described transmission is used for SRS is carried out the TPC of power control and/or be used for that SRS is carried out synchronous SS comprising:
Utilize vacant bit among the E-HICH send described for SRS being carried out power control TPC and/or be used for SRS is carried out synchronous SS.
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