CN101771463B - Method, device and system for sending uplink sounding reference signal - Google Patents
Method, device and system for sending uplink sounding reference signal Download PDFInfo
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- CN101771463B CN101771463B CN 200910076462 CN200910076462A CN101771463B CN 101771463 B CN101771463 B CN 101771463B CN 200910076462 CN200910076462 CN 200910076462 CN 200910076462 A CN200910076462 A CN 200910076462A CN 101771463 B CN101771463 B CN 101771463B
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Abstract
The invention discloses a method for sending an uplink sounding reference signal in a multi-carrier system, and the method is applied in the multi-carrier system and comprises the following steps: determining the time position of sending the uplink sounding reference signal (SRS) on a working carrier; determining the time position of sending the SRS signal on a non-working carrier based on the principle of time division multiple access (TDM) in the multi-carrier; and sending the SRS signal in the determined time position of the working carrier and the time position of the non-working carrier, wherein each time position comprises a sign position or a sub-frame and the like. The invention further discloses a user equipment which comprises a working carrier time position determining unit, a non-working carrier time position determining unit and an SRS signal sending unit. The scheme of the invention can achieve the purpose of sending the SRS signal at a certain bandwidth stipulated by all carriers of the multi-carrier system or the communication protocol within a certain time.
Description
Technical field
The present invention relates to the multi-carrier wireless communication technical field, particularly a kind of methods, devices and systems that send uplink detection reference signal.
Background technology
In Long Term Evolution project (LTE) system; Uplink detection reference signal (Sounding Reference Signals; SRS) be the upward signal that subscriber equipment (UE) sends, carry out up timing for the base station and detect, power control; Up frequency domain dispatching, operations such as link circuit self-adapting provide channel condition information.For time division duplex (TDD) system, when descending employing was transmitted based on pretreated many input and output (MIMO), the base station can use the SRS signal to carry out channel estimating, and then utilizes up-downgoing channel symmetry characteristic, obtained downlink channel condition information (CSI).
In the current generation LTE standard, following regulation has been carried out in the transmission of uplink detection reference signal:
For same UE, the transmission cycle of SRS comprises 2ms, 5ms, and 10ms, 20ms, 40ms, 80ms, 160ms, 320ms be totally eight kinds of cycles.SRS is on multiplexing last SC-FDMA symbol at sub-frame of uplink on the time domain, and for the TDD system, SRS can also send at uplink pilot time slot (UpPTS).UE sends duration, cycle, time-domain position, frequency domain position and the frequency hopping pattern of SRS and is indicated through high-level signaling by the base station.
For long-term evolution multi-carrier (LTE-A) system; For supporting the system bandwidth wideer than LTE system; Such as 100MHz, a kind of possibly be the frequency spectrum that directly distributes the 100M bandwidth, and a kind of possibly be with distributing to some spectrum aggregatings of existing system; Gather into big bandwidth and supply with the use of LTE-A system, as shown in Figure 1.Base station and subscriber equipment can adopt the transmission of asymmetrical transmission mode in the LTE-A system, and promptly descending carrier is unequal with the up-link carrier bandwidth or number is different, as shown in Figure 2.But according to existing SRS scheme; The base station is to obtain downlink channel condition information according to up-downgoing channel symmetry characteristic; The base station can only obtain the state information of the corresponding down channel of up-link carrier, then can't know its downlink channel condition information for other descending carrier.
Summary of the invention
In view of this, the objective of the invention is to, propose a kind of method and apparatus that sends uplink detection reference signal, can reach the purpose of sending the SRS signal in certain bandwidth of whole carrier waves of multicarrier system or communication protocol regulation within a certain period of time.
For ease of describing, make as giving a definition:
Work carrier wave: the carrier wave of current subframe transmit ascending data;
Inoperative carrier wave: support subscriber equipment to send the SRS signal, but be not used for the carrier wave of transfer of data in current subframe;
The principle of time division multiple access in the multicarrier: be exactly to utilize the multicarrier characteristic, send the SRS signal at one time on a plurality of carrier waves of position; Perhaps utilize the time division multiple access principle on the different time position, to send the SRS signal;
Time location: subframe internal symbol position or subframe position.
Send the method for uplink detection reference signal in a kind of multicarrier system that the embodiment of the invention proposes, this method is applied to multicarrier system, and comprises the steps:
Confirm to send on the work carrier wave time location of uplink detection with reference to the SRS signal;
Based on the principle of time division multiple access in the multicarrier, confirm to send on the inoperative carrier wave time location of SRS signal;
On the time location of determined work carrier wave and inoperative carrier wave, send the SRS signal.
The embodiment of the invention also proposes a kind of subscriber equipment, comprising:
Work subcarrier time position determination unit is used for confirming to send on the work carrier wave time location of SRS signal;
Inoperative subcarrier time position determination unit is used for confirming to send on the inoperative carrier wave time location of SRS signal according to based on the time division multiple access principle;
The SRS signal transmitting unit; Be used on the determined work subcarrier time of said work subcarrier time position determination unit position, sending the SRS signal, and on the determined inoperative subcarrier time of said inoperative subcarrier time position determination unit position, send the SRS signal.
Can find out from above technical scheme; The present invention adopts in the multicarrier time division multiple access with principle transmission SRS signal on work carrier wave and inoperative carrier wave; Thereby the certain bandwidth that is implemented in inherent whole carrier waves of multicarrier system of certain hour or communication protocol regulation is sent the SRS signal, reaches the purpose of effectively obtaining base station and user device channel information.Wherein according to subscriber equipment or system requirements ability, can be supported in same time location and adopt single (continuously) carrier wave, perhaps many (dispersing) carrier wave sends the SRS signal.
Description of drawings
Fig. 1 is the sketch map of multi-carrier polymerizing in the LTE-A system;
Fig. 2 be base station and subscriber equipment in the LTE-A system asymmetric transmission mode on/sketch map of descending carrier;
Fig. 3 is a kind of method flow diagram that sends the SRS signal of the present invention;
Fig. 4 is the running time-frequency resource distribution schematic diagram of the transmission SRS signal of the embodiment of the invention one;
Fig. 5 is the running time-frequency resource distribution schematic diagram of the transmission SRS signal of the embodiment of the invention two;
Fig. 6 is the running time-frequency resource distribution schematic diagram of the transmission SRS signal of the embodiment of the invention three;
Fig. 7 has provided the embodiment of the invention because the running time-frequency resource distribution schematic diagram of the transmission SRS signal under the limited case of uplink single-carrier;
Fig. 8 is a kind of subscriber equipment block diagram that the embodiment of the invention four proposes;
Fig. 9 is the another kind of subscriber equipment block diagram that the embodiment of the invention five proposes.
Embodiment
The SRS signal can send at work carrier wave and inoperative carrier wave, and the bandwidth of sending the SRS signal here is the part bandwidth (being the part carrier wave) of system bandwidth (being whole carrier waves) or communication protocol regulation (all kinds of control signalings or base station and terminal acquiescence).The present invention program is based on the principle of time division multiple access in the multicarrier; Sending on the existing work carrier wave on the basis of SRS signal; On the inoperative carrier wave, send the SRS signal; Thereby the certain bandwidth that is implemented in inherent whole carrier waves of multicarrier system of certain hour or communication protocol regulation is sent the SRS signal, reaches the purpose of effectively obtaining base station and user device channel information.The method of the transmission SRS signal that the present invention proposes is as shown in Figure 3, comprises the steps:
Step 301: confirm to send on the work carrier wave time location of uplink detection with reference to the SRS signal;
Step 302:, confirm to send on the inoperative carrier wave time location of SRS signal according to the principle of time division multiple access in the multicarrier;
The principle of time division multiple access in the said multicarrier can be utilized the multicarrier characteristic exactly, sends the SRS signal at one time on a plurality of carrier waves of position; Also can utilize the time division multiple access principle, on the different time position, send the SRS signal.Said time location can be subframe internal symbol position or subframe position.
Step 303: on the time location of determined work carrier wave and inoperative carrier wave, send the SRS signal.
For making the object of the invention, technical scheme and advantage clearer, be that subframe position is an example below with the time location, in conjunction with specific embodiment the present invention is done further to set forth in detail.
Embodiment one: in adjacent two work carrier wave SRS signal sending times intervals, send the SRS signal of one or more inoperative carrier wave according to certain rule (communication protocol agreement or signaling indication configuration) insertion.Reach traversal within a certain period of time to system bandwidth or part bandwidth.Can be between the time between the subframe of work adjacent transmission SRS signal on the carrier wave arbitrary subframe, be determined to many one or N inoperative carrier wave inoperative carrier waves for transmission SRS signal on said subframe.N is the number of inoperative carrier wave.The subframe of sending the SRS signal on each inoperative carrier wave can have the identical time cycle, also can have different time periods.
Fig. 4 shows the running time-frequency resource distribution schematic diagram of the transmission SRS signal of the embodiment of the invention one, and wherein each grid is represented a sub-frame of a number of sub-carrier, and time span is 1ms.When the work carrier wave transmission SRS signal period is 5ms; According to mode shown in Figure 4; Comprise 4 idle subframes between the subframe of adjacent two transmission SRS on the work carrier wave; First idle subframe is sent the SRS signal on inoperative carrier wave 1, second idle subframe sent the SRS signal on inoperative carrier wave 2 also the rest may be inferred.Do not change the work carrier wave SRS signal period thereby reach, insert the purpose of feedback inoperative carrier wave SRS signal.
Embodiment two: send the time location at the subframe place of SRS signal at fixed work carrier wave, select at the most 1 or N the inoperative carrier wave inoperative carrier wave as transmission SRS signal.N is the number of inoperative carrier wave.Wherein the SRS information number of inoperative carrier wave transmission is determined according to the rule that pre-sets by the signaling indication configuration or the subscriber equipment of communication protocol agreement, base station.
Preferably; Can confirm to send on each inoperative carrier wave the subframe of SRS signal respectively; The subframe that makes different inoperative carrier waves send the SRS signal differs from one another, but the subframe of transmission SRS signal is the subframe that the work carrier wave sends the SRS signal on each inoperative carrier wave.For different inoperative carrier waves, its time cycle of sending the subframe of SRS signal can be the same or different.
Fig. 5 is the running time-frequency resource distribution schematic diagram of the transmission SRS signal of the embodiment of the invention two.The carrier wave 2ms cycle is sent as example to work; When the work carrier wave sends the SRS signal; Send the SRS signal at the inoperative carrier wave; The 1st sub-frame as shown in Figure 5 is sent the SRS signal on work carrier wave and inoperative carrier wave 2, the 3rd sub-frame is being sent the SRS signal on work carrier wave and inoperative carrier wave 1.The cycle of sending the SRS signal on inoperative carrier wave 1 and the inoperative carrier wave 2 is 4ms.
Embodiment three: according to the subframe of sending the SRS signal on the indication information configuration inoperative carrier wave from the base station.
Fig. 6 is the running time-frequency resource distribution schematic diagram of the transmission SRS signal of the embodiment of the invention three.Subscriber equipment receives the indication information that carries inoperative carrier identification and subframe sign from the base station, and said inoperative carrier identification and subframe are identified corresponding subframe as the subframe of sending the SRS signal on the inoperative carrier wave.
Confirm the subframe of transmission SRS signal on the inoperative carrier wave according to the foregoing description method after; When the carrier wave number of sending the SRS signal in same subframe receives some restriction; (for example power limited, single carrier etc.); Perhaps work carrier wave and inoperative carrier wave SRS signal when sending conflict, need send according to the walk off from one's job SRS signal of carrier wave or inoperative carrier wave of certain rule, its rule is by communication protocol agreement or signaling indication configuration.
Fig. 7 has provided because the running time-frequency resource distribution schematic diagram of the transmission SRS signal under the limited case of uplink single-carrier.Subscriber equipment can only send the SRS signal in a sub-frame on a carrier wave; For example in subframe 1; Suppose to confirm that work carrier wave and inoperative carrier wave 2 send the SRS signal; But because the restriction of single carrier, must abandon the transmission of inoperative carrier wave SRS signal according to certain principle (here for example according to the principle of prioritised transmission work carrier wave SRS signal).Again for example in subframe 6; Same generation work carrier wave and inoperative carrier wave SRS signal conflict; At this moment according to certain principle (here for example according to the limited transmitting SRS signal of inoperative carrier wave; The perhaps base station command principle that carrier wave sends the SRS signal that walks off from one's job), the transmission of the carrier wave SRS signal that walks off from one's job.
More generally speaking; Subscriber equipment sends after the subframe of SRS signal on confirming work carrier wave and inoperative carrier wave; Whether the number of the SRS signal that judgement is sent on work on the current subframe carrier wave and inoperative carrier wave surpasses the threshold value that is provided with in advance; If the part SRS signal that then abandons on the current subframe according to following arbitrary principle makes its restriction of satisfying said threshold value, carry out said step of on the subframe of determined work carrier wave and inoperative carrier wave, sending the SRS signal again; Otherwise directly carry out the step of on the subframe of determined work carrier wave and inoperative carrier wave, sending the SRS signal;
Said principle comprises:
Preferentially abandon work carrier wave SRS signal;
Preferentially abandon inoperative carrier wave SRS signal;
Order abandons the SRS signal of work carrier wave and/or inoperative carrier wave;
Indication abandons the SRS signal of work carrier wave and/or inoperative carrier wave according to the base station signaling.
Perhaps, subscriber equipment also can abandon work carrier wave and/or the inoperative carrier wave SRS signal on current subframe according to the signaling indication from the base station.
Fig. 8 is a kind of subscriber equipment that the embodiment of the invention four proposes, and comprising:
Work carrier wave subframe is confirmed unit 801, is used for confirming to send on the work carrier wave subframe of SRS signal;
Inoperative carrier wave subframe is confirmed unit 802, is used for the principle according to inoperative carrier wave traversal, confirms to send on the inoperative carrier wave subframe of SRS signal;
SRS signal transmitting unit 803 is used for confirming to send on the unit 801 determined work carrier wave subframes SRS signal in said work carrier wave subframe, and confirms to send on the unit 802 determined inoperative carrier wave subframes SRS signal in said inoperative carrier wave subframe.
Fig. 9 is the another kind of subscriber equipment that the embodiment of the invention five proposes, and this subscriber equipment confirms that except having work carrier wave subframe unit 801, inoperative carrier wave subframe confirm also to comprise unit 802 and the SRS signal transmitting unit 803:
Counting unit 804 is used for confirming that according to work carrier wave subframe unit 801 and inoperative carrier wave subframe confirm the output signal of unit 802, the number of the SRS signal that sends on the current subframe is counted, and exported count value to judging unit 805; Also be used to receive the number from the SRS signal that abandons of discarding unit 806, the number that said count value is deducted the said SRS signal that abandons exports judging unit 805 again to;
Judging unit 805 is used to judge whether the count value of said counting unit 804 surpasses the threshold value that is provided with in advance, if then send index signal to discarding unit 806;
Discarding unit 806; Be used for according to index signal from judging unit 805; The part SRS signal that notice SRS signal transmitting unit 803 abandons on the current subframe simultaneously with the number notifications count unit 804 of the SRS signal that abandons, makes the count value of counting unit 804 less than said threshold value.
Then said SRS signal transmitting unit 803 abandons the SRS signal according to the notice of discarding unit 806, and the SRS signal of remainder is sent to the base station.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. send the method for uplink detection reference signal in the multicarrier system, it is characterized in that, comprise the steps:
Confirm to send on the work carrier wave time location of uplink detection with reference to the SRS signal; The implication of said work carrier wave is the carrier wave of current subframe transmit ascending data; Said time location is subframe internal symbol position or subframe position;
Based on the principle of time division multiple access TDM in the multicarrier, confirm to send on the inoperative carrier wave time location of SRS signal; The implication of said inoperative carrier wave is sent the SRS signal for supporting subscriber equipment, but is not used for the carrier wave of transfer of data in current subframe; The principle of time division multiple access in the said multicarrier is utilized the multicarrier characteristic exactly, sends the SRS signal at one time on a plurality of carrier waves of position; Perhaps utilize the time division multiple access principle on the different time position, to send the SRS signal;
On the time location of determined work carrier wave and inoperative carrier wave, send the SRS signal.
2. method according to claim 1 is characterized in that, the step of sending the time location of SRS signal on said definite inoperative carrier wave comprises:
Send SRS signal time position at fixed work carrier wave, select an inoperative carrier wave as the carrier wave that sends the SRS signal.
3. method according to claim 1 is characterized in that, the step of sending the time location of SRS signal on said definite inoperative carrier wave comprises:
Send the time location of SRS signal at fixed work carrier wave, selecting n inoperative carrier wave is the carrier wave of transmission SRS signal on said time location, said 1 < n≤N, and N is the number of inoperative carrier wave.
4. method according to claim 1 is characterized in that, the step of sending the time location of SRS signal on said definite inoperative carrier wave comprises:
Arbitrary time location between the time location of transmission SRS signal adjacent on the fixed work carrier wave selects an inoperative carrier wave as the carrier wave that sends the SRS signal.
5. method according to claim 1 is characterized in that, the step of sending the time location of SRS signal on said definite inoperative carrier wave comprises:
Arbitrary time location between the time location of transmission SRS signal adjacent on the fixed work carrier wave, selecting n inoperative carrier wave is the carrier wave that on said time location, sends the SRS signal, said 1 < n≤N, N is the number of inoperative carrier wave.
6. method according to claim 1 is characterized in that, the step of sending the time location of SRS signal on said definite inoperative carrier wave comprises:
According to communication protocol agreement between base station and the subscriber equipment and/or receive from the indication of base station indication signaling, with said agreement and/or indication time corresponding position and inoperative carrier wave as the time location that sends the SRS signal and send the carrier wave of said SRS signal.
7. according to each described method of claim 1 to 5, it is characterized in that the time location that sends the SRS signal on each inoperative carrier wave has the identical time cycle.
8. according to each described method of claim 1 to 6, it is characterized in that, said before sending the SRS signal on the time location of determined work carrier wave and inoperative carrier wave, further comprise:
Whether the number of the SRS signal that judgement is sent on work on the current time position carrier wave and inoperative carrier wave surpasses the threshold value that is provided with in advance; If; Then abandon locational part SRS signal of current time and make its restriction of satisfying said threshold value, carry out said step of on the time location of determined work carrier wave and inoperative carrier wave, sending the SRS signal again according to following arbitrary principle; Otherwise directly carry out the step of on the time location of determined work carrier wave and inoperative carrier wave, sending the SRS signal;
Said principle comprises:
Or/and the control signaling of base station is indicated, preferentially abandon work carrier wave SRS signal according to the agreement of the communication protocol between base station and the subscriber equipment;
Or/and the control signaling of base station is indicated, preferentially abandon inoperative carrier wave SRS signal according to the agreement of the communication protocol between base station and the subscriber equipment;
Or/and the control signaling of base station is indicated, order abandons the SRS signal of work carrier wave and/or inoperative carrier wave according to the agreement of the communication protocol between base station and the subscriber equipment.
9. according to each described method of claim 1 to 6, it is characterized in that, said before sending the SRS signal on the time location of determined work carrier wave and inoperative carrier wave, further comprise:
Signaling indication according to from the base station abandons work carrier wave and/or inoperative carrier wave at locational SRS signal of current time.
10. according to each described method of claim 1 to 6, it is characterized in that said time location is the character position or the subframe position of subframe.
11. a subscriber equipment is characterized in that, comprising:
Work subcarrier time position determination unit is used for confirming to send on the work carrier wave time location of SRS signal; The implication of said work carrier wave is the carrier wave of current subframe transmit ascending data; Said time location is subframe internal symbol position or subframe position;
Inoperative subcarrier time position determination unit is used for confirming to send on the inoperative carrier wave time location of SRS signal according to based on multicarrier time division multiple access principle; The implication of said inoperative carrier wave is sent the SRS signal for supporting subscriber equipment, but is not used for the carrier wave of transfer of data in current subframe; The principle of time division multiple access in the said multicarrier is utilized the multicarrier characteristic exactly, sends the SRS signal at one time on a plurality of carrier waves of position; Perhaps utilize the time division multiple access principle on the different time position, to send the SRS signal;
The SRS signal transmitting unit; Be used on the determined work subcarrier time of said work subcarrier time position determination unit position, sending the SRS signal, and on the determined inoperative subcarrier time of said inoperative subcarrier time position determination unit position, send the SRS signal.
12. subscriber equipment according to claim 11 is characterized in that, said subscriber equipment further comprises:
Counting unit is used for the output signal according to work subcarrier time position determination unit and inoperative subcarrier time position determination unit, and the number of the SRS signal that sends on the current time position is counted; Also be used to receive number, said count value deducted the number of the said SRS signal that abandons from the SRS signal that abandons of discarding unit;
Judging unit is used to judge whether the count value of said counting unit surpasses the threshold value that is provided with in advance, if then send index signal to discarding unit;
Discarding unit is used for according to from the indication signaling of judging unit, and notice SRS signal transmitting unit abandons locational part SRS signal of current time, simultaneously with the number notifications count unit of the SRS signal that abandons;
Then said SRS signal transmitting unit abandons the SRS signal according to the notice of discarding unit, and the SRS signal of remainder is sent to the base station.
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| CN 200910076462 CN101771463B (en) | 2009-01-05 | 2009-01-05 | Method, device and system for sending uplink sounding reference signal |
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| CN102378216B (en) * | 2010-08-06 | 2014-05-14 | 普天信息技术研究院有限公司 | Method for transmitting uplink sounding reference signal |
| CN102378383B (en) * | 2010-08-09 | 2014-04-02 | 华为技术有限公司 | SRS (sounding reference signal) sending and receiving methods, base station and user equipment |
| CN102932919B (en) * | 2011-08-10 | 2017-10-20 | 中兴通讯股份有限公司 | The resource allocation method and device of uplink sounding reference signal |
| CN103765969B (en) * | 2011-10-03 | 2018-04-10 | 太阳专利信托公司 | Terminal, base station, and communication method |
| US9060343B2 (en) * | 2011-10-03 | 2015-06-16 | Mediatek, Inc. | Support of network based positioning by sounding reference signal |
| JP2013102398A (en) * | 2011-11-09 | 2013-05-23 | Ntt Docomo Inc | Radio communication system, user terminal and radio communication method |
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| CN104283581B (en) * | 2013-07-01 | 2019-01-15 | 中兴通讯股份有限公司 | A kind of method and system of determining detection reference signal frequency hopping pattern |
| CN104283582B (en) * | 2013-07-01 | 2018-07-06 | 中兴通讯股份有限公司 | A kind of determining detection reference signal frequency hopping pattern method and terminal |
| JP6623289B2 (en) * | 2015-09-23 | 2019-12-18 | 華為技術有限公司Ｈｕａｗｅｉ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｃｏ．，Ｌｔｄ． | Terminal device, network device, uplink transmission method, and uplink reception method |
| EP3343988B1 (en) | 2015-09-23 | 2020-11-11 | Huawei Technologies Co., Ltd. | Terminal device, network device, method for transmitting uplink reference signal and method for receiving same |
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| CN112039632B (en) | 2016-09-27 | 2023-04-07 | 中国移动通信有限公司研究院 | Uplink signal transmission method, device and system |
| WO2018124685A1 (en) | 2017-01-02 | 2018-07-05 | 엘지전자 주식회사 | Srs transmission method for uplink beam correction, and terminal therefor |
| WO2019191902A1 (en) * | 2018-04-03 | 2019-10-10 | Zte Corporation | Systems and methods for radio link monitoring |
| CN111756661B (en) * | 2019-03-29 | 2021-10-22 | 华为技术有限公司 | Communication method, device, system and storage medium |
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