CN102694637A - Sending method and system for measuring reference signals under time division duplex system - Google Patents
Sending method and system for measuring reference signals under time division duplex system Download PDFInfo
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Abstract
The invention provides a sending method and a system for measuring reference signals under a time division duplex system, wherein the method comprises that a terminal determines a time domain symbolic position which is used for sending non-periodic measurement reference signals in a time-frequency resource corresponding to an uplink pilot frequency time slot in a special subframe of a wireless frame; and that the terminal sends non-periodic measurement reference signals in the time-frequency resource corresponding to the time domain symbolic position. Effects of improving both the flexibility of a base station scheduling UE sending non-periodic SRS and improving the utilization rate of SRS resource can be reached by adopting the above-mentioned technical solution.
Description
Technical field
The present invention relates to the communications field, the sending method and the device of measuring reference signals (Sounding Reference Signal abbreviates SRS as) under a kind of tdd systems.
Background technology
Long Term Evolution (Long Term Evolution; Abbreviating LTE as) radio frames in the system comprises FDD (Frequency Division Duplex; Abbreviate FDD as) frame structure of pattern and time division duplex (Time Division Duplex abbreviates TDD as) pattern.The frame structure of fdd mode, as shown in Figure 1, the radio frames of 10 milliseconds of ms is 0.5ms by 20 length, and the time slot of numbering 0～19 is formed, and it is the subframe i of 1ms that time slot 2i and 2i+1 form length.The frame structure of tdd mode, as shown in Figure 2, the radio frames of a 10ms is longly formed for the field of 5ms by two, and a field comprises that 5 length are the subframe of 1ms, and subframe i is defined as 2 and longly is time slot 2i and the 2i+1 of 0.5ms.
In above-mentioned two kinds of frame structures; For standard cyclic prefix (Normal Cyclic Prefix abbreviates Normal CP as), the symbol that it is 66.7us that time slot comprises 7 length; Wherein the CP length of first symbol is 5.2lus, and the CP length of all the other 6 symbols is 4.69us; For extended cyclic prefix (Extended Cyclic Prefix abbreviates Extended CP as), a time slot comprises 6 symbols, and the CP length of all symbols is 16.67us.The T of chronomere
sBe defined as T
s=1/ (15000 * 2048) second, the uplink-downlink configuration of support is as shown in table 1, to each subframe in the radio frames; " D " expression is exclusively used in the subframe of downlink transfer, and " U " expression is exclusively used in the subframe of uplink, and " S " expression is used for descending pilot frequency time slot (Downlink Pilot Time Slot; Abbreviate DwPTS as), protection is (Guard Period abbreviates GP as) and uplink pilot time slot (Uplink Pilot Time Slot at interval; Abbreviate UpPTS as) special subframe in these three territories; The length of DwPTS and UpPTS is as shown in table 2, and their length is obeyed DwPTS, and GP and UpPTS three's total length are 30720T
s=1ms.Each subframe i is represented that by 2 time slot 2i and 2i+1 each time slot is long to be T
Slot=15360T
s=0.5ms.
Table 1: up/downstream arrangements
Table 2: special subframe configuration (DwPTS/GP/UpPTS length)
LTE TDD supports the up-downgoing switching cycle of 5ms and 10ms.If the downstream-to-upstream transfer point cycle is 5ms, special subframe can be present in two fields; If downstream-to-upstream transfer point cycle 10ms, special subframe only is present in first field.Subframe 0 always is used for downlink transfer with subframe 5 and DwPTS.UpPTS and the subframe of closelying follow behind special subframe are exclusively used in uplink.
In LTE, physical downlink control channel PDCCH is used to carry the uplink and downlink schedule information, and uplink power control information.Downlink Control Information (Downlink Control Information abbreviates DCI as) form is divided into DCI format 0,1,1A, 1B, 1C, 1D, 2,2A, 3,3A etc.Base station (e-Node-B; Abbreviate eNB as) can pass through Downlink Control Information configure user equipment (User Equipment; Abbreviate UE as) (subscriber equipment also can be described as terminal equipment), perhaps terminal equipment is accepted the configuration of high-rise (higher layers), is also referred to as through high-level signaling and comes configuration UE.
SRS (measuring reference signals, Sounding Reference Signal) is the signal that is used for measuring radio channel status information (Channel State Information abbreviates CSI as) between a kind of terminal equipment and base station.In long evolving system, UE regularly sends uplink SRS according to the parameters such as bandwidth, frequency domain position, sequence cyclic shift, cycle and sub-frame offset of eNB indication on last data symbol that sends subframe.ENB judges the up CSI of UE according to the SRS that receives, and carries out operations such as frequency domain selection scheduling, closed power control according to the CSI that obtains.
In the LTE system, the SRS sequence that UE sends obtains through YITIAOGEN sequence
is carried out cyclic shift α in time domain.To carrying out different cyclic shift α with the YITIAOGEN sequence, just can access different SRS sequences, and mutually orthogonal between these SRS sequences that obtain, therefore, can use to different UE these SRS sequence allocation, to realize the code division multiple access between UE.In the LTE system, the SRS sequence definition 8 cyclic shift α, provide through following formula (1):
Wherein,
indicated by the signaling of 3bit, is respectively 0,1,2,3,4,5,6 and 7.That is to say that under same running time-frequency resource, the UE in the sub-district has 8 available sign indicating number resources, eNB can dispose 8 UE at most and on identical running time-frequency resource, send SRS simultaneously.Formula (1) can be regarded as the SRS sequence uniformly-spaced is divided into 8 parts in time domain, but because the SRS sequence length is 12 multiple, so the minimum length of SRS sequence is 24.
In the LTE system, the frequency domain bandwidth of SRS adopts tree to be configured.The corresponding tree structure of each SRS band width configuration, the SRS bandwidth of top (or being called ground floor) be to maximum SRS bandwidth that should the SRS band width configuration, or be called the SRS bandwidth range.UE is according to the indication of the signaling of base station, calculate the SRS bandwidth of self after, the top signaling frequency domain position n that sends according to eNB again
RRCConfirm self to send the frequency domain initial position of SRS.Fig. 3 is the different n of the distribution of prior art
RRCUE send the frequency domain initial position sketch map of SRS, as shown in Figure 3, distributed different n
RRCUE will be in the sub-district zones of different of SRS bandwidth send SRS, wherein, UE1 is according to n
RRC=0 confirms to send the frequency initial position of SRS, and UE2 is according to n
RRC=3 confirm to send the frequency initial position of SRS, and UE3 is according to n
RRC=4 confirm to send the frequency initial position of SRS, and UE4 is according to n
RRC=6 confirm to send the frequency initial position of SRS.
The employed sequence of SRS is selected from the demodulation pilot frequency sequence group, and when the SRS of UE bandwidth was 4 Resource Block (Resource Block abbreviates RB as), using length was the sequence of the computer generation (Computer Generated abbreviates CG as) of 2 RB; When the SRS of UE bandwidth during, use the Zadoff-Chu sequence of corresponding length greater than 4 RB.
In addition, in same SRS bandwidth, the subcarrier of SRS is to place at interval; That is to say that pectinate texture is adopted in the transmission of SRS, the quantity of the frequency comb in the LTE system (frequency comb) is 2; Also the repeat factor value (RePetition Factor abbreviates RPF as) corresponding to time domain is 2.Fig. 4 is the pectinate texture sketch map of the SRS of prior art, and is as shown in Figure 4, when each UE sends SRS, only uses in two frequency comb, comb=0 or comb=1.Like this, UE only uses the frequency domain index to send SRS as the subcarrier of even number or odd number according to the indication of the top signaling of 1 bit.This pectinate texture allows more UE in same SRS bandwidth, to send SRS.In addition, proprietary SRS cycle and the sub-frame offset of high-level signaling configuration UE can be passed through in the base station, and be as shown in table 3.
The proprietary SRS cycle T of table 3UE
SRS, 1With sub-frame offset configuration T
Offset, 1For trigger type 1, TDD
| SRS configuration index I SRS | The SRS cycle TSRS，1(ms) | SRS |
| 0 | 2 | 0，1 |
| 1 | 2 | 0，2 |
| 2 | 2 | 1，2 |
| 3 | 2 | 0，3 |
| 4 | 2 | 1，3 |
| 5 | 2 | 0，4 |
| 6 | 2 | 1，4 |
| 7 | 2 | 2，3 |
| 8 | 2 | 2，4 |
| 9 | 2 | 3，4 |
| 10-14 | 5 | I SRS-10 |
| 15-24 | 10 | I SRS-15 |
| 25-31 | Reserve | Reserve |
Senior LTE (LTE-Advanced abbreviates LTE-A as) system is the evolution system of future generation of LTE system, at up support SU-MIMO, and can use 4 antennas as up transmitting antenna at most.That is to say that UE can send SRS simultaneously at synchronization on many antennas, and eNB need estimate the state on every channel according to the SRS that receives on the every antenna.
In the research of existing LTE-A, propose: UE can send SRS through high-level signaling (be also referred to as through trigger type 0 and trigger) or these two kinds of triggering modes of Downlink Control Information (be also referred to as through trigger type 1 and trigger); That trigger based on high-level signaling be cycle SRS, and based on the Downlink Control Information triggering is SRS aperiodic.For SRS aperiodic, in case at present the LTE-A standard of Release-10 version only supports UE to receive the triggering signaling of SRS aperiodic, UE only send one time aperiodic SRS, and do not support repeatedly to send SRS aperiodic.But in present LTE-A tdd systems; When the UE-specific cycle of base station configuration UE is that the configuration index ISRS of 2ms and SRS is when being 0; Can appear at two situation that the UpPTS symbol sends SRS aperiodic simultaneously of the special subframe of radio frames, perhaps can't confirm which UpPTS symbol to send SRS aperiodic at.To the problems referred to above in the correlation technique, effective solution is not proposed as yet at present.
Summary of the invention
In correlation technique, can't confirm the problems such as time-domain symbol position of uplink pilot time slot in the LTE-A tdd systems, the present invention provides the sending method and the device of measuring reference signals under a kind of tdd systems, to address the above problem at least.
According to an aspect of the present invention; The sending method of measuring reference signals under a kind of time division duplex is provided, has comprised: the time-domain symbol position of measuring reference signals aperiodic is confirmed to be used to send in the pairing running time-frequency resource of uplink pilot time slot in the special subframe of radio frames in the terminal; Measuring reference signals aperiodic is sent at the terminal on the pairing running time-frequency resource in said time-domain symbol position.
According to a further aspect in the invention, the device of measuring reference signals under a kind of tdd systems is provided, has comprised:
Determination module is used for confirming being used to send in the pairing running time-frequency resource of special subframe uplink pilot time slot of radio frames the time-domain symbol position of measuring reference signals aperiodic; Sending module is used for transmission said aperiodic of measuring reference signals on the pairing running time-frequency resource in said time-domain symbol position.
Through the present invention; Before sending SRS aperiodic; Confirm the time-domain symbol position that is used to send SRS aperiodic in the pairing running time-frequency resource of uplink pilot time slot in the special subframe of radio frames; Solved and to have confirmed the problems such as time-domain symbol position of uplink pilot time slot in the correlation technique in the LTE-A tdd systems, improved the flexibility that base station scheduling UE sends SRS aperiodic, improved the effect of the utilance of SRS resource thereby reached.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the frame structure sketch map according to the fdd mode of correlation technique;
Fig. 2 is the frame structure sketch map according to the tdd mode of correlation technique;
Fig. 3 is according to the different n of the distribution of correlation technique
RRCUE send the frequency domain initial position sketch map of SRS;
Fig. 4 is the pectinate texture sketch map according to the SRS of correlation technique;
Fig. 5 is the sending method flow chart according to measuring reference signals under the time division duplex of the embodiment of the invention;
Fig. 6 is the dispensing device structured flowchart according to measuring reference signals under the time division duplex of the embodiment of the invention.
Embodiment
Hereinafter will and combine embodiment to specify the present invention with reference to accompanying drawing.Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.
Fig. 5 is the sending method flow chart according to measuring reference signals under the time division duplex of the embodiment of the invention.As shown in Figure 5, this method comprises:
Step S502, the time-domain symbol position of measuring reference signals aperiodic is confirmed to be used to send in the pairing running time-frequency resource of uplink pilot time slot in the special subframe of radio frames in the terminal;
Step S504, measuring reference signals aperiodic is sent at the terminal on the pairing running time-frequency resource in said time-domain symbol position.
The foregoing description; Because before sending SRS aperiodic; The time-domain symbol position that just is used to send SRS aperiodic in the pairing running time-frequency resource of uplink pilot time slot in the special subframe of definite radio frames; Can't confirm the problems such as time-domain symbol position of uplink pilot time slot in the correlation technique in the LTE-A tdd systems thereby solved, and then improve base station scheduling UE and sent the flexibility of SRS aperiodic and the utilance of SRS resource.
In concrete application process, the time-domain symbol position of measuring reference signals aperiodic can be confirmed to be used to send according to the radio frames of the triggering signaling that detects measuring reference signals aperiodic or the call number of subframe in above-mentioned terminal.Specifically can include but not limited to following two kinds of implementations: (1), according to the parity of the call number of the subframe of the radio frames of the triggering signaling that detects measuring reference signals aperiodic or radio frames, confirm the time-domain symbol position; (2), whether be the call number of being scheduled to according to the call number of the subframe of the triggering signaling that detects measuring reference signals aperiodic, confirm the time-domain symbol position.Certainly, in the practical implementation process, be not limited to above-mentioned two kinds of implementations, for example, can also confirm the time-domain symbol position according to the request domain value of measuring reference signals in the triggering signaling that detects measuring reference signals aperiodic.
In the practical implementation process, according to the parity of the call number of the subframe of the radio frames of the triggering signaling that detects measuring reference signals aperiodic or radio frames, confirm the time-domain symbol position, can include but not limited to following implementation:
(1), when the call number of subframe of radio frames or radio frames that detects the triggering signaling of measuring reference signals aperiodic was even number, the time-domain symbol position was first time-domain symbol position of uplink pilot time slot; When the call number of subframe of radio frames or radio frames that detects the triggering signaling of measuring reference signals aperiodic was odd number, the time-domain symbol position was second time-domain symbol position of uplink pilot time slot;
(2), when the call number of subframe of radio frames or radio frames that detects the triggering signaling of measuring reference signals aperiodic was even number, the time-domain symbol position was second time-domain symbol position of uplink pilot time slot; When the call number of subframe of radio frames or radio frames that detects the triggering signaling of measuring reference signals aperiodic was odd number, the time-domain symbol position was first time-domain symbol position of uplink pilot time slot;
(3), when the call number of subframe of radio frames and radio frames that detects the triggering signaling of measuring reference signals aperiodic was carried out with computing gained result to even number, the time-domain symbol position was first time-domain symbol position of uplink pilot time slot; When the call number of subframe of radio frames and radio frames that detects the triggering signaling of measuring reference signals aperiodic was carried out with computing gained result to odd number, the time-domain symbol position was second time-domain symbol position of uplink pilot time slot;
(4), when the call number of subframe of radio frames and radio frames that detects the triggering signaling of measuring reference signals aperiodic was carried out with computing gained result to even number, the time-domain symbol position was second time-domain symbol position of uplink pilot time slot; When the call number of subframe of radio frames and radio frames that detects the triggering signaling of measuring reference signals aperiodic was carried out with computing gained result to odd number, the time-domain symbol position was first time-domain symbol position of uplink pilot time slot.
In the practical implementation process, whether the call number of subframe that above-mentioned basis detects the triggering signaling of measuring reference signals aperiodic is the call number of being scheduled to, and confirms the time-domain symbol position, can include but not limited to following implementation:
(1), when the terminal be that then the time-domain symbol position is first time-domain symbol position of uplink pilot time slot when detecting the triggering signaling of measuring reference signals aperiodic on 0 or 1 or the 3 or 4 pairing subframes in call number; When the terminal is that then the time-domain symbol position is second time-domain symbol position of uplink pilot time slot when detecting the triggering signaling of measuring reference signals aperiodic on 5 or 6 or the 8 or 9 pairing subframes in call number.
(2), when the terminal be that then the time-domain symbol position is second time-domain symbol position of uplink pilot time slot when detecting the triggering signaling of measuring reference signals aperiodic on 0 or 1 or the 3 or 4 pairing subframes in call number; When the terminal is that then the time-domain symbol position is first time-domain symbol position of uplink pilot time slot when detecting the triggering signaling of measuring reference signals aperiodic on 5 or 6 or the 8 or 9 pairing subframes in call number.
(3), when the terminal be that then the time-domain symbol position is first time-domain symbol position of uplink pilot time slot when detecting the triggering signaling of measuring reference signals aperiodic on 3 or 4 or the 8 or 9 pairing subframes in call number; When the terminal is that then the time-domain symbol position is second time-domain symbol position of uplink pilot time slot when detecting the triggering signaling of measuring reference signals aperiodic on 0 or 1 or the 5 or 6 pairing subframes in call number.
In the practical implementation process, the time-domain symbol position of measuring reference signals aperiodic can also be confirmed to be used to send according to the request domain value of measuring reference signals in the triggering signaling that detects measuring reference signals aperiodic in the terminal.Specifically can include but not limited to following implementation: when the request domain value that (1) detects measuring reference signals in the triggering signaling of measuring reference signals aperiodic when the terminal was 01, then the time-domain symbol position was first time-domain symbol position of uplink pilot time slot; When the request domain value that detects measuring reference signals in the triggering signaling of measuring reference signals aperiodic when the terminal was 10 or 11, then the time-domain symbol position was second time-domain symbol position of uplink pilot time slot; When the request domain value that (2) detects measuring reference signals in the triggering signaling of measuring reference signals aperiodic when the terminal was 10, then the time-domain symbol position was first time-domain symbol position of uplink pilot time slot; When the request domain value that detects measuring reference signals in the triggering signaling of measuring reference signals aperiodic when the terminal was 11 or 01, then the time-domain symbol position was second time-domain symbol position of uplink pilot time slot; When the request domain value that (3) detects measuring reference signals in the triggering signaling of measuring reference signals aperiodic when the terminal was 11, then the time-domain symbol position was first time-domain symbol position of said uplink pilot time slot; When the request domain value that detects measuring reference signals in the triggering signaling of measuring reference signals aperiodic when the terminal was 01 or 10, then the time-domain symbol position was second time-domain symbol position of uplink pilot time slot.
In order to understand the foregoing description better, specify below in conjunction with relevant form, accompanying drawing and instantiation.Need to prove that following instance all uses in the following scene of TDD system: the base station is that the configuration index ISRS of 2ms and SRS is 0 according to UE-specific cycle of table 3 configurating terminal; Is a certain in 5 to 8 according to the configuration information shown in the table 2 with the special subframe configuration settings, and measuring reference signals aperiodic is sent to the base station on the pairing running time-frequency resource of uplink pilot time slot in the terminal in the special subframe of radio frames.
In this instance, confirm that the method for time-domain symbol position of uplink pilot time slot is following:
When UE detects the triggering signaling of SRS aperiodic on index is radio frames or the subframe of even number, then on first pairing running time-frequency resource in time-domain symbol position of uplink pilot time slot, send SRS aperiodic; When UE detects the triggering signaling of SRS aperiodic on index is radio frames or the subframe of odd number, then on second pairing running time-frequency resource in time-domain symbol position of uplink pilot time slot, send SRS aperiodic;
Perhaps, when UE detects the triggering signaling of SRS aperiodic on index is radio frames or the subframe of even number, then on second pairing running time-frequency resource in time-domain symbol position of uplink pilot time slot, send SRS aperiodic; When UE detects the triggering signaling of SRS aperiodic on index is radio frames or the subframe of odd number, then on first pairing running time-frequency resource in time-domain symbol position of uplink pilot time slot, send SRS aperiodic.
In this instance; When UE detects the triggering signaling of SRS aperiodic on index is the subframe of 0 or 1 or 3 or 4 (i.e. any in 0,1,3,4 these several call numbers), then on first pairing running time-frequency resource in time-domain symbol position of uplink pilot time slot, send SRS aperiodic; When UE detects the triggering signaling of SRS aperiodic on index is the subframe of 5 or 6 or 8 or 9 (i.e. any in 5,6,8,9 these several call numbers), then on second pairing running time-frequency resource in time-domain symbol position of uplink pilot time slot, send SRS aperiodic; Perhaps,
When UE detects the triggering signaling of SRS aperiodic on index is the subframe of 0 or 1 or 3 or 4 (i.e. any in 0,1,3,4 these several call numbers), then on second pairing running time-frequency resource in time-domain symbol position of uplink pilot time slot, send SRS aperiodic; When UE detects the triggering signaling of SRS aperiodic on index is the subframe of 5 or 6 or 8 or 9 (i.e. any in 5,6,8,9 these several call numbers), then on first pairing running time-frequency resource in time-domain symbol position of uplink pilot time slot, send SRS aperiodic; Perhaps
When UE detects the triggering signaling of SRS aperiodic on call number is the subframe of 3 or 4 or 8 or 9 (i.e. any in 3,4,8,9 these several call numbers), then on first pairing running time-frequency resource in time-domain symbol position of uplink pilot time slot, send SRS aperiodic; When UE detects the triggering signaling of SRS aperiodic on call number is the subframe of 0 or 1 or 5 or 6 (i.e. any in 0,1,5,6 these several call numbers), then on second pairing running time-frequency resource in time-domain symbol position of uplink pilot time slot, send SRS aperiodic.
In this instance, when the request domain value of SRS that detects the triggering signaling of SRS aperiodic as UE is 01, then on first pairing running time-frequency resource in time-domain symbol position of uplink pilot time slot, send SRS aperiodic; When the request domain value of SRS that detects the triggering signaling of SRS aperiodic as UE is 10, then on second pairing running time-frequency resource in time-domain symbol position of uplink pilot time slot, send SRS aperiodic; Perhaps,
When the request domain value of SRS that detects the triggering signaling of SRS aperiodic as UE is 01, then on first pairing running time-frequency resource in time-domain symbol position of uplink pilot time slot, send SRS aperiodic; When the request domain value of SRS that detects the triggering signaling of SRS aperiodic as UE is 11, then on second pairing running time-frequency resource in time-domain symbol position of uplink pilot time slot, send SRS aperiodic; Perhaps,
When the request domain value of SRS that detects the triggering signaling of SRS aperiodic as UE is 01 or 10, then on first pairing running time-frequency resource in time-domain symbol position of uplink pilot time slot, send SRS aperiodic; When the request domain value of SRS that detects the triggering signaling of SRS aperiodic as UE is 11, then on second pairing running time-frequency resource in time-domain symbol position of uplink pilot time slot, send SRS aperiodic; Perhaps,
When the request domain value of SRS that detects the triggering signaling of SRS aperiodic as UE is 10, then on first pairing running time-frequency resource in time-domain symbol position of uplink pilot time slot, send SRS aperiodic; When the request domain value of SRS that detects the triggering signaling of SRS aperiodic as UE is 01, then on second pairing running time-frequency resource in time-domain symbol position of uplink pilot time slot, send SRS aperiodic; Perhaps
When the request domain value that detects SRS in the triggering signaling of SRS aperiodic as UE is 11, then on first pairing running time-frequency resource in time-domain symbol position of uplink pilot time slot, send SRS aperiodic; When the request domain value that detects SRS in the triggering signaling of SRS aperiodic as UE is 01 or 10, then on second pairing running time-frequency resource in time-domain symbol position of uplink pilot time slot, send SRS aperiodic.
Fig. 6 is the dispensing device structured flowchart according to measuring reference signals under the time division duplex of the embodiment of the invention.As shown in Figure 6, this device comprises:
In concrete application process, determination module 60 can confirm to be used to send the time-domain symbol position of measuring reference signals aperiodic according to the radio frames of the triggering signaling that detects measuring reference signals aperiodic or the call number of subframe.Specifically can include but not limited to following two kinds of implementations: (1), according to the parity of the call number of the subframe of the radio frames of the triggering signaling that detects measuring reference signals aperiodic or radio frames, confirm the time-domain symbol position; (2), whether be the call number of being scheduled to according to the call number of a plurality of subframes of the triggering signaling that detects measuring reference signals aperiodic, confirm the time-domain symbol position.Certainly, in the practical implementation process, be not limited to above-mentioned two kinds of implementations, for example, can also confirm the time-domain symbol position according to the request domain value of measuring reference signals in the triggering signaling that detects measuring reference signals aperiodic.
Confirm to be used to send the concrete implementation of the time-domain symbol position of measuring reference signals aperiodic about determination module 60, specifically can repeat no more here referring to the description of said method embodiment.
Sending module 62 links to each other with determination module 60, is used on the pairing running time-frequency resource in time-domain symbol position, sending measuring reference signals aperiodic.
From above description, can find out that the present invention has realized following technique effect:
Through the above embodiment of the present invention, solve the problem that can't confirm the time-domain symbol position of uplink pilot time slot in the LTE-A tdd systems, thereby improved the flexibility that base station scheduling UE sends SRS aperiodic, improved the utilance of SRS resource.
Obviously, it is apparent to those skilled in the art that above-mentioned each module of the present invention or each step can realize with the general calculation device; They can concentrate on the single calculation element; Perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element; Thereby; Can they be stored in the storage device and carry out, and in some cases, can carry out step shown or that describe with the order that is different from here by calculation element; Perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. the sending method of measuring reference signals under the tdd systems is characterized in that, comprising:
The time-domain symbol position of measuring reference signals aperiodic is confirmed to be used to send in the pairing running time-frequency resource of uplink pilot time slot in the special subframe of radio frames in the terminal;
Said aperiodic of measuring reference signals is sent at said terminal on the pairing running time-frequency resource in said time-domain symbol position.
2. method according to claim 1 is characterized in that, the said time-domain symbol position of said aperiodic of measuring reference signals is confirmed to be used to send in said terminal, comprising:
Said time-domain symbol position is confirmed according to the radio frames of the triggering signaling that detects said aperiodic of measuring reference signals or the call number of subframe in said terminal.
3. method according to claim 2 is characterized in that, said time-domain symbol position is confirmed according to the radio frames of the triggering signaling that detects said aperiodic of measuring reference signals or the call number of subframe in said terminal, comprising:
According to the parity of the call number of the subframe of the radio frames of the triggering signaling that detects said aperiodic of measuring reference signals or radio frames, confirm said time-domain symbol position; Perhaps
Whether the call number according to the subframe of the triggering signaling that detects said aperiodic of measuring reference signals is the call number of being scheduled to, and confirms said time-domain symbol position.
4. method according to claim 3 is characterized in that, said basis detects the parity of call number of subframe of radio frames or radio frames of the triggering signaling of said aperiodic of measuring reference signals, confirms said time-domain symbol position, comprises one of following:
When the call number of subframe of radio frames or radio frames that detects the triggering signaling of said aperiodic of measuring reference signals was even number, said time-domain symbol position was first time-domain symbol position of said uplink pilot time slot; When the call number of subframe of radio frames or radio frames that detects the triggering signaling of said aperiodic of measuring reference signals was odd number, said time-domain symbol position was second time-domain symbol position of said uplink pilot time slot; And
When the call number of subframe of radio frames or radio frames that detects the triggering signaling of said aperiodic of measuring reference signals was even number, said time-domain symbol position was second time-domain symbol position of said uplink pilot time slot; When the call number of subframe of radio frames or radio frames that detects the triggering signaling of said aperiodic of measuring reference signals was odd number, said time-domain symbol position was first time-domain symbol position of said uplink pilot time slot.
5. method according to claim 3 is characterized in that, said basis detects the parity of call number of subframe of radio frames or radio frames of the triggering signaling of said aperiodic of measuring reference signals, confirms said time-domain symbol position, comprises one of following:
When the call number of subframe of radio frames and radio frames that detects the triggering signaling of said aperiodic of measuring reference signals was carried out with computing gained result to even number, said time-domain symbol position was first time-domain symbol position of said uplink pilot time slot; When the call number of subframe of radio frames and radio frames that detects the triggering signaling of said aperiodic of measuring reference signals was carried out with computing gained result to odd number, said time-domain symbol position was second time-domain symbol position of said uplink pilot time slot; And
When the call number of subframe of radio frames and radio frames that detects the triggering signaling of said aperiodic of measuring reference signals was carried out with computing gained result to even number, said time-domain symbol position was second time-domain symbol position of said uplink pilot time slot; When the call number of subframe of radio frames and radio frames that detects the triggering signaling of said aperiodic of measuring reference signals was carried out with computing gained result to odd number, said time-domain symbol position was first time-domain symbol position of said uplink pilot time slot.
6. whether method according to claim 3 is characterized in that, be the call number of being scheduled to according to the call number of a plurality of subframes of the triggering signaling that detects said aperiodic of measuring reference signals, confirms said time-domain symbol position, comprises one of following:
When said terminal is that then said time-domain symbol position is first time-domain symbol position of said uplink pilot time slot when detecting the triggering signaling of measuring reference signals aperiodic on 0 or 1 or the 3 or 4 pairing subframes in call number; When said terminal is that then said time-domain symbol position is second time-domain symbol position of said uplink pilot time slot when detecting the triggering signaling of measuring reference signals aperiodic on 5 or 6 or the 8 or 9 pairing subframes in call number;
When said terminal is that then said time-domain symbol position is second time-domain symbol position of said uplink pilot time slot when detecting the triggering signaling of measuring reference signals aperiodic on 0 or 1 or the 3 or 4 pairing subframes in call number; When said terminal is that then said time-domain symbol position is first time-domain symbol position of said uplink pilot time slot when detecting the triggering signaling of measuring reference signals aperiodic on 5 or 6 or the 8 or 9 pairing subframes in call number; And
When said terminal is that then said time-domain symbol position is first time-domain symbol position of said uplink pilot time slot when detecting the triggering signaling of measuring reference signals aperiodic on 3 or 4 or the 8 or 9 pairing subframes in call number; When said terminal is that then said time-domain symbol position is second time-domain symbol position of said uplink pilot time slot when detecting the triggering signaling of measuring reference signals aperiodic on 0 or 1 or the 5 or 6 pairing subframes in call number.
7. method according to claim 1 is characterized in that, the said time-domain symbol position of said aperiodic of measuring reference signals is confirmed to be used to send in said terminal, comprising:
Said time-domain symbol position is confirmed according to the request domain value of measuring reference signals in the triggering signaling that detects said aperiodic of measuring reference signals in said terminal.
8. method according to claim 7 is characterized in that, said time-domain symbol position is confirmed according to the request domain value of measuring reference signals in the triggering signaling that detects measuring reference signals aperiodic in said terminal, comprises one of following:
When the request domain value that detects measuring reference signals in the triggering signaling of measuring reference signals aperiodic when said terminal was 01, then said time-domain symbol position was first time-domain symbol position of said uplink pilot time slot; When the request domain value that detects measuring reference signals in the triggering signaling of measuring reference signals aperiodic when said terminal was 10 or 11, then said time-domain symbol position was second time-domain symbol position of said uplink pilot time slot;
When the request domain value that detects measuring reference signals in the triggering signaling of measuring reference signals aperiodic when said terminal was 10, then said time-domain symbol position was first time-domain symbol position of said uplink pilot time slot; When the request domain value that detects measuring reference signals in the triggering signaling of measuring reference signals aperiodic when said terminal was 11 or 01, then said time-domain symbol position was second time-domain symbol position of said uplink pilot time slot; And
When the request domain value that detects measuring reference signals in the triggering signaling of measuring reference signals aperiodic when said terminal was 11, then said time-domain symbol position was first time-domain symbol position of said uplink pilot time slot; When the request domain value that detects measuring reference signals in the triggering signaling of measuring reference signals aperiodic when said terminal was 01 or 10, then said time-domain symbol position was second time-domain symbol position of said uplink pilot time slot.
9. the dispensing device of measuring reference signals under the tdd systems is characterized in that, comprising:
Determination module is used for confirming being used to send in the pairing running time-frequency resource of special subframe uplink pilot time slot of radio frames the time-domain symbol position of measuring reference signals aperiodic;
Sending module is used for transmission said aperiodic of measuring reference signals on the pairing running time-frequency resource in said time-domain symbol position.
10. device according to claim 9 is characterized in that, said determination module is used for confirming said time-domain symbol position according to the radio frames of the triggering signaling that detects said aperiodic of measuring reference signals or the call number of subframe.
11. device according to claim 9 is characterized in that, said determination module is used for the request domain value according to the triggering signaling measuring reference signals that detects said aperiodic of measuring reference signals, confirms said time-domain symbol position.
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