CN102638325A - Method and device for triggering sending of aperiodic sounding reference signals (A-SRS) - Google Patents
Method and device for triggering sending of aperiodic sounding reference signals (A-SRS) Download PDFInfo
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- CN102638325A CN102638325A CN2011100377381A CN201110037738A CN102638325A CN 102638325 A CN102638325 A CN 102638325A CN 2011100377381 A CN2011100377381 A CN 2011100377381A CN 201110037738 A CN201110037738 A CN 201110037738A CN 102638325 A CN102638325 A CN 102638325A
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Abstract
The invention discloses a technical scheme for triggering sending of aperiodic sounding reference signals (A-SRS) in a user terminal of a wireless communication network. The technical scheme comprises the steps that: a user terminal detects whether a plurality of physical downlink control channels respectively trigger the sending of the A-SRS in the same subframe; and if the plurality of physical downlink control channels respectively trigger the sending of the A-SRS in the same subframe, the user terminal executes any step in the following step of discarding the sending of the A-SRS in the subframe or executing the sending of the A-SRS triggered by the physical downlink control channels for uplink scheduling or executing the sending of an A-SRS triggered by a newest physical downlink control channel. According to the invention, the conflict of the sending of the A-SRS triggered by the downlink control information of a downlink and the sending of the A-SRS triggered by the downlink control information of an uplink can be effectively solved.
Description
Technical field
The present invention relates to radio communication, relate in particular to the transmission of aperiodicity uplink detection reference signal in the radio communication.
Background technology
In #63 meeting of 3GPP RAN1; For with down link (Downlink; DL) down link control information (Downlink Control Information, the form 1A in DCI) trigger the aperiodicity uplink detection reference signal (Aperiodic Sounding Reference Signals, common recognition has been reached in transmission A-SRS); So utilizing TDD system reciprocity, is a breakthrough from the angle of TDD system reciprocity validity.
In 3GPP RAN1 #60 meeting, also reached common recognition for the transmission that triggers the aperiodicity uplink detection reference signal with form in the down link control information of uplink scheduling 0 and format 4.
But the problem of bringing thus is: if the down link control information form 1A of down link is used to trigger the transmission of A-SRS signal, the down link control information that then may cause down link triggers the conflict of transmission of down link control information triggering A-SRS signal of transmission and the up link of A-SRS signal.
Summary of the invention
The present invention proposes a kind of technical scheme that the aperiodicity uplink detection reference signal sends that in the user terminal of cordless communication network, is used to trigger.
According to a specific embodiment of the present invention; Provide a kind of in the user terminal of cordless communication network, being used to trigger the method that the aperiodicity uplink detection reference signal sends, may further comprise the steps: detected the transmission that whether has a plurality of Physical Downlink Control Channel to trigger aperiodicity uplink detection reference signal in the same subframe respectively; Trigger the transmission of aperiodicity uplink detection reference signal in the same subframe respectively if any a plurality of Physical Downlink Control Channel, carry out any step in the following steps: abandon the transmission of aperiodicity uplink detection reference signal in the said subframe; Perhaps carry out the transmission of the aperiodicity uplink detection reference signal of the Physical Downlink Control Channel triggering that is used for uplink scheduling; Perhaps carry out the transmission of the aperiodicity uplink detection reference signal of up-to-date Physical Downlink Control Channel triggering.
According to another specific embodiment of the present invention; A kind of device that the aperiodicity uplink detection reference signal sends that in the user terminal at cordless communication network, is used to trigger is provided; Comprise: checkout gear is used to detect the transmission that whether has a plurality of Physical Downlink Control Channel to trigger aperiodicity uplink detection reference signal in the same subframe respectively; Final controlling element is used for triggering respectively if any a plurality of Physical Downlink Control Channel the transmission of aperiodicity uplink detection reference signal in the same subframe, carries out the transmission of abandoning aperiodicity uplink detection reference signal in the said subframe; Perhaps carry out the transmission of the aperiodicity uplink detection reference signal of the Physical Downlink Control Channel triggering that is used for uplink scheduling; Perhaps carry out the transmission of the aperiodicity uplink detection reference signal of up-to-date Physical Downlink Control Channel triggering.
Through method and apparatus of the present invention, the down link control information that has solved down link effectively triggers the conflict of transmission of down link control information triggering A-SRS signal of transmission and the up link of A-SRS signal.Further, through coordination, saved wireless communication resources effectively to A-SRS signal in the same subframe and the transmission of channel status designator.In addition, this method and apparatus also makes the developer can design independently up-downgoing scheduler.
Description of drawings
Through reading the following detailed description of non-limiting example being done with reference to accompanying drawing, it is more obvious that other features, objects and advantages of the present invention will become.
Fig. 1 is the application scenarios sketch map according to an embodiment of the present invention;
Fig. 2 is the method flow diagram that in the user terminal of cordless communication network, is used to trigger the transmission of aperiodicity uplink detection reference signal according to an embodiment of the present invention;
Fig. 3 (a) and (b) and the sketch map that (c) is respectively according to each sub-steps of step S202 described in Fig. 2 of an embodiment of the present invention;
Fig. 4 is the structured flowchart that in the wireless communication user terminal, is used to trigger the device 400 that the aperiodicity uplink detection reference signal sends according to an embodiment of the present invention;
Wherein, same or analogous Reference numeral is represented same or analogous steps characteristic or device (module).
Embodiment
Below in conjunction with accompanying drawing specific embodiment of the present invention is elaborated.
Fig. 1 shows the application scenarios sketch map according to an embodiment of the present invention.In Fig. 1, show base station 10 and user terminal 20, wherein (Physical Downlink Control Channel PDCCH) goes up and sends down link control information (DCI) to user terminal 20 at Physical Downlink Control Channel in base station 10.Wherein, down link control information form 0 is used for uplink scheduling with format 4, can trigger user terminal 20 and send the A-SRS signal.Down link control information form 1A is used for descending scheduling, also can trigger user terminal 20 and send the A-SRS signal.
Because a plurality of Physical Downlink Control Channel can trigger the transmission of A-SRS signal, because below, the conflict that may cause the A-SRS signal to send:
Since the time difference between the transmission of time that the A-SRS signal sends and corresponding Physical Downlink Control Channel uplink downlink control information possibly have 4ms to 10ms; Length is enough to hold the transmission of a plurality of Physical Downlink Control Channel during this period of time, and the scheduling decision that base station 10 is confirmed according to up-to-date uplink feedback possibly upgraded the triggering or the distribution of A-SRS signal.
2. the design owing to uplink scheduler in the base station 10 and Downlink scheduler is independently, and therefore, they possibly distribute afoul resource to send A-SRS for user terminal 20.
3. under the situation of multicarrier, the transmission of the A-SRS that the Physical Downlink Control Channel on a plurality of carrier waves triggers also may conflict; Can trigger repeatedly at the single descending control signaling under the situation of A-SRS transmission, the transmission of the A-SRS signal that the transmission of the repeatedly A-SRS signal that Physical Downlink Control Channel triggers also possibly trigger with another Physical Downlink Control Channel conflicts.
Generally speaking; User terminal sends one time the aperiodicity uplink detection reference signal in a sub-frame; Therefore, the conflict of A-SRS signal transmission refers to that promptly a plurality of Physical Downlink Control Channel trigger the transmission of aperiodicity uplink detection reference signal in the same subframe respectively.
Fig. 2 shows and in the user terminal of cordless communication network, is used to trigger the method flow diagram that the aperiodicity uplink detection reference signal sends; Below in conjunction with Fig. 1, the process that triggers the transmission of aperiodicity uplink detection reference signal in the user terminal 20 is elaborated.
At first, in step S201, user terminal 20 detects the transmission that whether has a plurality of Physical Downlink Control Channel to trigger aperiodicity uplink detection reference signal in the same subframe respectively.Particularly, user terminal 20 can be known the transmission that whether has a plurality of Physical Downlink Control Channel to trigger aperiodicity uplink detection reference signal in the same subframe respectively according to what receive from the Downlink Control Information on the Physical Downlink Control Channel of base station 10.
Need to prove, be used for uplink scheduling with format 4, can trigger user terminal 20 and send the A-SRS signal though preceding text are addressed down link control information form 0.Down link control information form 1A is used for descending scheduling, also can trigger user terminal 20 and send the A-SRS signal; But the invention is not restricted to this, the down link control information of other form also may trigger the transmission of A-SRS signal, if any form 2B to be defined or form 2C etc.
Then; In step S202; Trigger the transmission of aperiodicity uplink detection reference signal in the same subframe respectively if any a plurality of Physical Downlink Control Channel, any step that user terminal 20 is carried out in the following steps: 1. abandon the transmission of aperiodicity uplink detection reference signal; Perhaps 2. carry out the aperiodicity uplink detection reference signal that the Physical Downlink Control Channel be used for uplink scheduling triggers transmission; Perhaps 3. carry out the aperiodicity uplink detection reference signal that up-to-date Physical Downlink Control Channel triggers transmission.These three kinds of situations are respectively like Fig. 3 (a) and (b) with (c).At Fig. 3 (a) and (b) with (c), D representes that descending sub frame, U represent sub-frame of uplink, and S representes special subframe.
The 2nd kind of situation be to the design of uplink scheduler and Downlink scheduler separate situation, under this situation, make uplink scheduling preferential.
Under the 2nd kind of situation; If having a plurality of Physical Downlink Control Channel that are used for uplink scheduling to trigger the aperiodicity uplink detection reference signal sends; Carry out the transmission of the aperiodicity uplink detection reference signal of the up-to-date Physical Downlink Control Channel triggering that is used for uplink scheduling, shown in Fig. 3 (b).
This consideration of transmission of the aperiodicity uplink detection reference signal that triggers before the transmission that the 3rd kind of situation is based on the aperiodicity uplink detection reference signal that up-to-date Physical Downlink Control Channel triggers always is superior to is made.
For the TDD wireless communication system; The purpose of the transmission of Downlink Control Information triggering A-SRS signal is the feedback of channel condition information; As precoding matrix indicators (Precoding Matrix Indicator; PMI), CQI (Channel Quality Indicator, the transmission of the latent channel status designator that shows such as CQI).The implication of the latent here channel status designator that shows is meant the combination between a kind of channel condition information of information and quantification of receiver; It is adopted by transmitter more easily; Than the channel condition information of showing clearly; Transmitter carries out aftertreatment still less to it, like PMI, CQI and the RI (Rank Indicator) that defines among Fig. 3 GPP TS 36.814 Version900.
Usually; A-SRS can provide than the latent channel status designator that shows channel condition information more accurately; Therefore, if in same subframe, the transmission of existing A-SRS; The transmission of the latent channel status designator that shows is arranged again, and user terminal 20 can consider to abandon the transmission of the some or all of latent channel status designator that shows.
Carry out the transmission of aperiodicity uplink detection reference signal like user terminal 20; And the full order of being sent as of this aperiodicity uplink detection reference signal is sent, then abandon with the same subframe of being sent in of this aperiodicity uplink detection reference signal in the transmission of the latent channel status designator that shows.Here the implication of full order is meant that user terminal 20 has a plurality of send/receive antennas, all sends a uplink detection reference signal on each antenna.
Carry out the transmission of aperiodicity uplink detection reference signal like user terminal 20; And the non-full order that is sent as of this aperiodicity uplink detection reference signal is sent, and then abandons concealing with the corresponding part in same subframe of this non-full order uplink detection reference signal the transmission of the channel status designator that shows.Here the implication of non-full order is meant, user terminal 20 has a plurality of reception antennas, but only the part reception antenna as sending uplink detection reference signal on the transmission antennas transmit.For example; User terminal 20 has N send/receive antenna (N is the integer greater than 1); All send uplink detection reference signal (K is more than or equal to 1 integer less than N) on the 1st to K the transmitting antenna; Then user terminal 20 is abandoned the transmission of the latent channel status designator that show same subframe in corresponding with the 1st to K antenna, only sends the transmission of the latent channel status designator that show corresponding with the individual antenna of K+1 to N.Base station 10 is concealed the channel condition information that the channel status designator that shows recovers whole channel according to the A-SRS signal of this non-full order that receives with part.
Fig. 4 shows the structured flowchart that in the wireless communication user terminal, is used to trigger the device 400 that the aperiodicity uplink detection reference signal sends according to an embodiment of the present invention; In Fig. 4, device 400 comprises checkout gear 401 and final controlling element 402.
Below in conjunction with application scenarios shown in Figure 1, the course of work of the device 400 that is arranged in user terminal 20 is elaborated.
At first, checkout gear 401 detects the transmission that whether has a plurality of Physical Downlink Control Channel to trigger aperiodicity uplink detection reference signal in the same subframe respectively; If any, then the transmission of aperiodicity uplink detection reference signal is abandoned in final controlling element 402 execution 1.; Perhaps 2. carry out the aperiodicity uplink detection reference signal that the Physical Downlink Control Channel be used for uplink scheduling triggers transmission; Perhaps 3. carry out the aperiodicity uplink detection reference signal that up-to-date Physical Downlink Control Channel triggers transmission.
Under the 2nd kind of situation; Trigger the aperiodicity uplink detection reference signal if any a plurality of Physical Downlink Control Channel that are used for uplink scheduling and send, then final controlling element 402 is carried out the transmission of the aperiodicity uplink detection reference signal of the up-to-date Physical Downlink Control Channel triggering that is used for uplink scheduling.
Usually; A-SRS can provide than the latent channel status designator that shows channel condition information more accurately; Therefore, if in same subframe, the transmission of existing A-SRS; The transmission of the latent channel status designator that shows is arranged again, and user terminal 20 can consider to abandon the transmission of the some or all of latent channel status designator that shows.
As carry out the transmission of aperiodicity uplink detection reference signal; And the full order of being sent as of this aperiodicity uplink detection reference signal is sent, then final controlling element 402 abandon with the same subframe of being sent in of this aperiodicity uplink detection reference signal in the transmission of the latent channel status designator that shows.
As carry out the transmission of aperiodicity uplink detection reference signal; And the non-full order that is sent as of this aperiodicity uplink detection reference signal is sent, and then final controlling element 402 abandons concealing with the corresponding part in same subframe of this non-full order uplink detection reference signal the transmission of the channel status designator that shows.
Any technical scheme that does not deviate from spirit of the present invention all should fall within protection scope of the present invention.In addition, should any Reference numeral in the claim be regarded as limit related claim; " comprise " that a speech do not get rid of device unlisted in other claim or the specification or step; " one " before the device does not get rid of the existence of a plurality of such devices; In comprising the equipment of multiple arrangement, the one or more function in this multiple arrangement can be realized by same hardware or software module; Words such as " first ", " second ", " the 3rd " only are used for representing title, and do not represent any specific order.
More than specific embodiment of the present invention is described.It will be appreciated that the present invention is not limited to above-mentioned specific implementations, those skilled in the art can make various distortion or modification within the scope of the appended claims.
Claims (8)
1. one kind is used to trigger the method that the aperiodicity uplink detection reference signal sends in the user terminal of cordless communication network, may further comprise the steps:
Whether-detection has a plurality of Physical Downlink Control Channel to trigger the transmission of aperiodicity uplink detection reference signal in the same subframe respectively;
-trigger the transmission of aperiodicity uplink detection reference signal in the same subframe respectively if any a plurality of Physical Downlink Control Channel, carry out any step in the following steps:
A1. abandon the transmission of aperiodicity uplink detection reference signal in the said subframe; Perhaps
A2. carry out the transmission of the aperiodicity uplink detection reference signal of the Physical Downlink Control Channel triggering that is used for uplink scheduling; Perhaps
A3. carry out the transmission of the aperiodicity uplink detection reference signal of up-to-date Physical Downlink Control Channel triggering.
2. method according to claim 1, wherein, said steps A 2 may further comprise the steps:
-trigger the aperiodicity uplink detection reference signal if any a plurality of Physical Downlink Control Channel that are used for uplink scheduling to send, carry out the transmission of the aperiodicity uplink detection reference signal of the up-to-date Physical Downlink Control Channel triggering that is used for uplink scheduling.
3. method according to claim 1, wherein, further comprising the steps of:
As carry out the transmission of aperiodicity uplink detection reference signal; And the full order of being sent as of this aperiodicity uplink detection reference signal is sent, then abandon with the same subframe of being sent in of this aperiodicity uplink detection reference signal in the transmission of the latent channel status designator that shows.
4. method according to claim 1, wherein, further comprising the steps of:
As carry out the transmission of aperiodicity uplink detection reference signal; And the non-full order that is sent as of this aperiodicity uplink detection reference signal is sent, and then abandons concealing with the corresponding part in same subframe of this non-full order uplink detection reference signal the transmission of the channel status designator that shows.
5. one kind is used to trigger the device that the aperiodicity uplink detection reference signal sends in the user terminal of cordless communication network, comprising:
Checkout gear is used to detect the transmission that whether has a plurality of Physical Downlink Control Channel to trigger aperiodicity uplink detection reference signal in the same subframe respectively;
Final controlling element is used for triggering respectively if any a plurality of Physical Downlink Control Channel the transmission of aperiodicity uplink detection reference signal in the same subframe,
The transmission of aperiodicity uplink detection reference signal in the said subframe is abandoned in execution; Perhaps
Execution is used for the transmission of the aperiodicity uplink detection reference signal that the Physical Downlink Control Channel of uplink scheduling triggers; Perhaps
Carry out the transmission of the aperiodicity uplink detection reference signal of up-to-date Physical Downlink Control Channel triggering.
6. device according to claim 5, wherein, said final controlling element also is used for:
-trigger the aperiodicity uplink detection reference signal if any a plurality of Physical Downlink Control Channel that are used for uplink scheduling to send, carry out the transmission of the aperiodicity uplink detection reference signal of the up-to-date Physical Downlink Control Channel triggering that is used for uplink scheduling.
7. device according to claim 5, wherein, said final controlling element also is used for:
As carry out the transmission of aperiodicity uplink detection reference signal; And the full order of being sent as of this aperiodicity uplink detection reference signal is sent, then abandon with the same subframe of being sent in of this aperiodicity uplink detection reference signal in the transmission of the latent channel status designator that shows.
8. device according to claim 5, wherein, said final controlling element also is used for:
As carry out the transmission of aperiodicity uplink detection reference signal; And the non-full order that is sent as of this aperiodicity uplink detection reference signal is sent, and then abandons concealing with the corresponding part in same subframe of this non-full order uplink detection reference signal the transmission of the channel status designator that shows.
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| US9686066B2 (en) | 2012-10-24 | 2017-06-20 | Zte Corporation | Method and terminal for determining channel state information |
| WO2014063647A1 (en) * | 2012-10-24 | 2014-05-01 | 中兴通讯股份有限公司 | Method and terminal for determining channel state information |
| CN104919749A (en) * | 2013-01-23 | 2015-09-16 | 高通股份有限公司 | Efficient uplink resource indication for csi feedback |
| US10771220B2 (en) | 2015-11-18 | 2020-09-08 | Huawei Technologies Co., Ltd. | Uplink sounding signal triggering method and system, and apparatus |
| WO2017084593A1 (en) * | 2015-11-18 | 2017-05-26 | 华为技术有限公司 | Uplink detection signals triggering method, device and system |
| US10218480B2 (en) | 2015-11-18 | 2019-02-26 | Huawei Technologies Co., Ltd. | Uplink sounding signal triggering method and system, and apparatus |
| US10498510B2 (en) | 2015-11-18 | 2019-12-03 | Huawei Technologies Co., Ltd. | Uplink sounding signal triggering method and system, and apparatus |
| CN109478965A (en) * | 2016-05-06 | 2019-03-15 | 高通股份有限公司 | There is the detection reference signal of conflict in asymmetric carrier aggregation |
| US11159289B2 (en) | 2016-05-06 | 2021-10-26 | Qualcomm Incorporated | Sounding reference signals with collisions in asymmetric carrier aggregation |
| CN109478965B (en) * | 2016-05-06 | 2021-08-20 | 高通股份有限公司 | Sounding reference signal with collision in asymmetric carrier aggregation |
| US10721726B2 (en) * | 2016-11-04 | 2020-07-21 | Qualcomm Incorporated | Power control and triggering of sounding reference signal on multiple component carriers |
| US20190297611A1 (en) * | 2016-11-04 | 2019-09-26 | Qualcomm Incorporated | Power control and triggering of sounding reference signal on multiple component carriers |
| US11265869B2 (en) | 2016-11-04 | 2022-03-01 | Qualcomm Incorporated | Power control and triggering of sounding reference signal on multiple component carriers |
| WO2019141033A1 (en) * | 2018-01-17 | 2019-07-25 | 中兴通讯股份有限公司 | Method and apparatus for sending signal, method and apparatus for receiving signal, and storage medium |
| US11956181B2 (en) | 2018-01-17 | 2024-04-09 | Zte Corporation | Method and apparatus for sending signal, method and apparatus for receiving signal, and storage medium |
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Application publication date: 20120815 |