CN102378216B - Method for transmitting uplink sounding reference signal - Google Patents
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Abstract
The invention discloses a method for transmitting an uplink sounding reference signal. The method comprises the steps: a base station configures at least two sets of SRS (Sounding Reference Signals) for UE (User Equipment); the UE sends respectively corresponding sets of SRSs to the base station in a channel according to the period of each set of SRS and sends at least two sets of SRSs in total; and the base station analyzes the channel information obtained by the at least two sets of SRSs and utilizes reciprocity between an uplink channel and a downlink channel to transmit data with the UE in the channel. After the embodiment of the invention is applied, multiple sets of SRSs can be utilized to detect and understand the channel information of the uplink channel and the downlink channel together, so that use flexibility of the SRS is improved.
Description
Technical field
The present invention relates to communication technical field, more specifically, relate to a kind of sending method of uplink sounding reference signal.
Background technology
Up link utilizes reference signal to carry out ascending channel detecting.Interception reference signal (SRS, SoundingReference Signal) be the one in uplink reference signals, be mainly used in definite uplink signal-channel quality, frequency selectivity detection (be called for short and select characteristic frequently), power control and up timing estimation etc.SRS and upstream data or signaling are also unconnected.Base station is by high-level signaling or broadcast announcement user (UE) SRS parameter, and UE is periodically to send or single triggering SRS, and base station obtains uplink signal-channel quality by receiving SRS, selects the channel information such as feature and power control frequently.SRS parameter specifically comprises the parameters such as the transmitted power of look-in frequency subband, SRS structure pattern, broach, the skew of code territory and the SRS of SRS cycle, SRS.
But along with the fast development of the communication technology, the method that periodicity or single trigger SRS sounding channel quality is subject to certain limitation.For example: in the UE in coordinated multipoint transmission (CoMP) region, need to survey one or more channels of each community.Owing to incessantly there is Yi Ge community in CoMP region, therefore in periodicity or single triggering SRS sounding channel process, be difficult to enough SRS resources channel to be measured is surveyed.CoMP, is reached and improves the effect that cell edge covers, improves transmission rate with especially cell edge throughput of raising cell throughout by base station cooperative transmission.For another example, consider that while the in esse problem such as avoiding interference, base station not only needs the frequency subband that UE is being used to carry out channel detection, the frequency that simultaneously also needs to understand within the scope of wide frequency bandwidth more selects characteristic.And periodicity or single trigger the method for SRS sounding channel quality owing to adopting periodically or single triggering SRS, sounding channel is difficult to relate to more wide frequency bandwidth.For example, in upstream multi-antenna technology and upstream discontinuous scheduling of resource, need to know the channel situation of different frequency resource.
To sum up, utilize the method for SRS sounding channel quality to have the limited problem of channel information of surveying, need SRS mechanism more flexibly.
Summary of the invention
The embodiment of the present invention proposes a kind of sending method of uplink sounding reference signal, can utilize SRS to survey the channel information of up channel and down channel, solves the limited problem of channel information of surveying.
The technical scheme of the embodiment of the present invention is as follows:
A sending method for uplink sounding reference signal, the method comprises:
Base station is to user UE configuration at least two cover interception reference signal SRS, and UE sends the SRS of corresponding cover separately according to the cycle of every cover SRS self in channel to base station, at least two cover SRS described in sending altogether;
Described in the parsing of base station, at least two cover SRS obtain the information of described channel, utilize the reciprocity of up channel and down channel, in described channel, transmit data with UE.
Describedly in described channel, comprise with UE transmission data, base station, according to the information of described channel, sends downlink data at described channel, or base station is according to the information of described channel, and indication UE sends upstream data at described channel.
Describedly in described channel, comprise with UE transmission data, base station, according to the information of described channel, sends downlink data at described channel, and indicates UE to send upstream data at described channel.
The described cycle comprises the cycle of Infinite Cyclic or the cycle of limited circulation.
Described channel comprises frequency subband, and the described SRS of corresponding cover separately that sends to base station according to the cycle of every cover SRS self in channel comprises, in different frequency subbands, sends the SRS of corresponding cover separately according to the cycle of every cover SRS self to base station.
The cycle of each cover SRS is all the relation of integral multiple.
Do not send in the same time many cover SRS, preferentially send short-period SRS.
In the time disposing two cover SRS, the power of two cover SRS is unequal, and high-power SRS is sent to the base station place of Fei Zhe community, and the SRS that power is little is sent to the base station place of this community.
Described base station comprises to UE configuration at least two cover SRS, described base station configuration UE at least two cover SRS, and the parameters of informing at least two cover SRS described in UE by main carrier; Described channel comprises described main carrier and member carrier CC to be detected.
Described channel comprises the frequency chunks of discontinuous distribution in carrier wave, the described SRS of corresponding cover separately that sends to base station according to the cycle of every cover SRS self in channel comprises, in different frequency chunks, sends the SRS of corresponding cover separately according to the cycle of every cover SRS self to base station.
Described base station comprises to UE configuration at least two cover SRS, described base station configuration UE at least two cover SRS, and the parameters of informing at least two cover SRS described in UE by main carrier; Described channel comprises activation carrier wave and un-activation carrier wave; The described SRS of corresponding cover separately that sends to base station according to the cycle of every cover SRS self in channel comprises, in described activation carrier wave and/or described un-activation carrier wave, sends the SRS of corresponding cover separately according to the cycle of every cover SRS self to base station.
Described base station is to further comprising before UE configuration at least two cover SRS, the information of being determined the frequency subband that described configuration at least two cover SRS do not survey by down channel measuring-signal, the frequency subband that described down channel measuring-signal is surveyed forms complementation with the frequency subband of described SRS detection; Described downlink reference signal detects channel information in the time not sending SRS.
Described SRS is configured according to the logic port number of UE by base station.
Described at least two covers are independently or relevant between SRS.
Described method further comprises triggering SRS or stops SRS.
From technique scheme, can find out, in embodiments of the present invention, base station is to UE configuration at least two cover SRS, UE sends the SRS of corresponding cover separately according to the cycle of every cover SRS self in channel to base station, at least two cover SRS described in sending altogether, with respect to a set of SRS of the prior art, increase the scope of sounding channel information; Described in the parsing of base station, at least two cover SRS obtain the information of corresponding channel, utilize the reciprocity of up channel and down channel, in corresponding down channel, transmit data to UE.By the channel information of many cover SRS detecting periodically up channels and down channel, the channel information of surveying is more abundant and flexible, has compared with prior art greatly increased the validity of surveying.
Accompanying drawing explanation
Fig. 1 is that the embodiment of the present invention utilizes SRS and down channel measuring-signal to survey the schematic diagram of up channel situation and down channel situation;
Fig. 2 is SRS place frequency domain position schematic diagram in the embodiment of the present invention one;
Fig. 3 is the position view of many cover SRS in the embodiment of the present invention two;
Fig. 4 is carrier position schematic diagram in the embodiment of the present invention six;
Fig. 5 is two cover SRS place frequency domain position schematic diagrames in the embodiment of the present invention seven.
Embodiment
For making the object, technical solutions and advantages of the present invention express clearlyer, below in conjunction with drawings and the specific embodiments, the present invention is further described in more detail.
In embodiments of the present invention, base station is to UE configuration at least two cover SRS, the SRS that sends corresponding cover by UE in up channel with cycle of every suit SRS self to base station at least sends two cover SRS in channel, relatively only periodically sends a set of SRS and expanded the flexibility of sounding channel.The SRS receiving is resolved in base station, obtains channel information by SRS.Utilize SRS not only direct detection to channel information, and utilize the feature of wireless channel up-downgoing reciprocity, uplink channel information can be learnt by the SRS receiving in base station, owing at least sending two cover SRS in the present invention, can in being all detected channel, send downlink data, or base station is the information notification UE detecting, UE sends upstream data according to this information in being all detected channel; Also can in part SRS sounding channel, send downlink data, base station is by the information notification UE detecting, and UE sends upstream data according to this information in part SRS sounding channel.Survey the SRS of up channel and can bring base station about UE and channel situation with the detection information that the SRS that surveys down channel according to reciprocity brings, thereby use and provide support for up-downgoing channel is accurate.By the way, base station Integrated using overlaps SRS detection information more, and Wei Duo community and multipurpose service, increased the flexibility of SRS.And solve the limited problem of channel information surveyed.
First base station is to UE configuration at least two cover SRS, and UE sends at least two cover SRS with every cover SRS cycle separately in up channel in channel to base station, and resolve after the SRS receiving base station, obtains uplink channel information.Utilize the reciprocity of upper and lower property channel, base station, according to uplink channel information, sends data to UE in down channel.Send many cover SRS in the time of difference time, preferentially send shorter SRS of cycle, to obtain sooner the information of channel.The cycle of SRS comprises following two kinds: 1, cycle Infinite Cyclic sends SRS, is triggered SRS and is stopped SRS by signaling; 2, specifying the transmission times of SRS is the cycle of limited circulation.
In addition, in prior art, base station periodically sends down channel measuring-signal to UE.That the embodiment of the present invention utilizes SRS and down channel measuring-signal to survey the schematic diagram of up channel situation and down channel situation referring to accompanying drawing 1.In figure, black square represents that UE sends SRS according to the cycle of SRS to base station.UE resolves after the periodicity down channel measuring-signal of receiving, obtains down channel measurement report.White square represents that down channel measurement report is reported to base station place by UE.Can be according to up-downgoing channel reciprocity in the present invention, the down channel measuring-signal that makes full use of base station periodicity transmission is measured down channel, and UE also can offer the information of base station down channel.
That for example considers that descending channel information that UE is reported surveys as SRS supplements, and the frequency subband that down channel measuring-signal is surveyed is made as the frequency subband that many cover SRS do not survey.The frequency subband that down channel measuring-signal is surveyed forms complementation with the frequency subband that many cover SRS survey.The frequency subband of down channel measurement report and the frequency subband of many cover SRS detection that report due to UE form complementation, in the situation that not increasing SRS, have increased the scope of channel detection, can save and optimize the transmission of SRS.The detecting periodically of the descending channel information that UE periodically reports and many cover SRS, integrally combines up-downgoing channel information, has strengthened accurately understanding in real time channel.
Embodiment mono-
Be SRS place frequency subband position view in the embodiment of the present invention one referring to accompanying drawing 2.The frequency that SRS1 surveys is higher, and the frequency that SRS2 surveys is lower.The information of utilizing many cover SRS look-in frequency subbands sends the SRS of corresponding cover separately according to the cycle of every cover SRS self in frequency subband to base station.Stagger overlapping the frequency subband that SRS surveys, every cover SRS surveys the frequency subband of paying close attention to separately more.Thereby different frequency subbands is surveyed.
Embodiment bis-
It is the position view of two cover SRS in the embodiment of the present invention two referring to accompanying drawing 3.Two cover SRS coordinate detection according to the cycle of self, the cycle difference of two cover SRS, and the frequency subband of surveying is also different.The cycle of SRS2 is the integral multiple of SRS1, the frequency subband that SRS2 look-in frequency is higher, the frequency subband that SRS1 look-in frequency is lower.The frequency subband that long period SRS2 surveys can form complementation with the frequency subband that short period SRS1 surveys, and the frequency location that mutually staggers reduces and repeats probe portion.For SRS more than two covers, the cycle of respectively overlapping SRS is all the relation of integral multiple.As, the cycle of SRS1 is 5s, and the cycle of SRS2 is 10s, and the cycle of SRS3 is 25s.
For example, the frequency subband that a set of SRS is calling carries out channel detection, and a set of SRS carries out channel detection at other frequency subband in addition.When the frequency subband calling is interfered, because SRS can feed back the information of other frequency subband in time, the scheduling of resource can, rapidly by originally sending in the data of calling frequency subband transmission are transferred to other frequency subband, have been optimized in base station.Same, also can send the above SRS of two covers and coordinate detection.The detailed process that above SRS is overlapped in same transmission two is identical with two cover SRS, just repeats no more herein.
Embodiment tri-
In the UE in CoMP region, need to survey one or more channels of each community.Owing to incessantly there is Yi Ge community in CoMP region, therefore can also send one or more sets SRS according to CoMP district SRS cooperation definition is that CoMP implements to prepare.When sending two cover SRS, wherein a set of SRS sends with higher power, facilitates the reception of other base stations; Another set of SRS sends with lower power, and base station direct and community, place contacts, to measure the channel information of community, place.When sending the above SRS of two covers, according to the power of the every cover of concrete Location of requirement SRS.
Embodiment tetra-
Carrier aggregation by the resource on combined dispatching and the multiple member carriers of use (CC), makes system can support the bandwidth of maximum 100MHz, thereby can realize higher system peak rate.In frequency polymerization situation, UE can send SRS according to each SRS cycle separately on multiple carrier waves that need to survey, and so just can obtain the channel information of multiple carrier waves, for more effective utilization CC lays the first stone.
Carrier wave in carrier aggregation comprises main carrier (PCC) and CC.Main carrier is the original carrier wave before carrier aggregation.CC has two kinds of situation: the one, CC to have the control channel of self, is generally referred to as auxiliary carrier wave (SCC); The 2nd, CC does not have the control channel of self, is generally referred to as to expand carrier wave (ExtendedCC).UE receives base station and sends the parameter of all SRS in main carrier, and then U E sends SRS in main carrier and auxiliary carrier wave; Or U E sends SRS in main carrier and expansion carrier wave.
Embodiment five
In the development of wireless technology, UE ascending resource distributes the discontinuous resource of support to distribute, and in same carrier wave, has multiple frequency chunks of discontinuous distribution.In the method for existing SRS sounding channel, owing to only sending a set of SRS, therefore can only survey the frequency chunks of continuous distribution, cannot precisely survey discrete frequency chunks.
Base station, to UE configuration at least two cover SRS, sends SRS according to the cycle of every cover SRS to base station in the frequency chunks of the discontinuous distribution of carrier wave, can accurately survey discontinuous resource.
Embodiment six
The in the situation that of having un-activation carrier wave in carrier aggregation, base station configuration UE at least two cover SRS, and inform the parameter of UE at least two cover SRS by main carrier, according to the cycle of every cover SRS corresponding at least two cover SRS signals that send in un-activation carrier wave and activation carrier wave, utilize up-downgoing reciprocity, thereby can obtain the information of un-activation carrier wave and activation carrier wave.Un-activation carrier wave refers to untapped member carrier in carrier aggregation.Activate carrier wave and refer to the member carrier and the main carrier that in carrier aggregation, are using.
In accompanying drawing 4a, the activation carrier wave of up-link carrier comprises that main carrier is carrier wave 1 and carrier wave 2, and the activation carrier wave of descending carrier comprises that main carrier is carrier wave 1 and carrier wave 2.The activation carrier number of up-link carrier is identical and symmetrical with the activation carrier number of descending carrier.In up-link carrier, having un-activation carrier wave is carrier wave 3, and in descending carrier, having un-activation carrier wave is carrier wave 3.Not only in activation carrier wave, send SRS, in inactive carrier wave, also send SRS.Although un-activation carrier wave is in untapped state, once need to use un-activation carrier wave time, can obtain rapidly the information of un-activation carrier wave.
In accompanying drawing 4b, the activation carrier wave of up-link carrier comprises that main carrier is carrier wave 1, and the activation carrier wave of descending carrier comprises that main carrier is carrier wave 1 and carrier wave 2.The activation carrier number of up-link carrier is different from the activation carrier number of descending carrier.In up-link carrier, having un-activation carrier wave is carrier wave 2 and carrier wave 3, and in descending carrier, having un-activation carrier wave is carrier wave 3.The activation carrier number of up-link carrier and the activation carrier wave of descending carrier are asymmetric, but in up-link carrier and descending carrier, all have un-activation carrier wave.Not only in activation carrier wave, send SRS, in inactive carrier wave, also send SRS.Although un-activation carrier wave is in untapped state, once need to use un-activation carrier wave time, can obtain rapidly the information of un-activation carrier wave.
Embodiment seven
For example, in the time that UE has four transmitting antennas, dispose 3 kinds of port modes according to antenna port number.I.e. 1 logic port pattern, 2 logic port patterns, 4 logic port patterns.Base station is according to the different SRS of the logic port pattern configurations of UE, as configured a set of SRS at 1 logic port, and a set of SRS of 2 logic port pattern configurations, a set of SRS of 4 logic port pattern configurations.
Wherein, each cover SRS of each logic port can be separate, or relevant.Referring to the cycle difference of accompanying drawing 5, two cover SRS.And the cycle of SRS2 and the cycle of SRS1, it doesn't matter, and SRS2 and SRS1 are separate, surveys separately different frequencies.How many cover SRS are correlated with and are not the key technology in the present invention, repeat no more.Each cover SRS can activate in the time of configuration simultaneously, can be also that UE first preserves each cover SRS parameter, then activates according to other modes or stops certain and overlap SRS.
For example, in the UE of intersection overlay area, many communities, it may the intersection in macro base station cover, or intersects in covering in macro base station and micro-base station.UE moves a set of SRS with certain logic port pattern Zhe community, can also, with the SRS of another operation a set of applicable intersection overlay area, logic port pattern Zhe community, carry out useful channel detection and power measurement etc. simultaneously.
Wherein, different SRS can be embodied in SRS structure plan difference, or other parameter difference in identical SRS structure plan situation.
The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (15)
1. a sending method for uplink sounding reference signal, is characterized in that, the method comprises:
Base station is to user UE configuration at least two cover interception reference signal SRS, and UE sends the SRS of corresponding cover separately according to the cycle of every cover SRS self in channel to base station, at least two cover SRS described in sending altogether;
Described in the parsing of base station, at least two cover SRS obtain the information of described channel, utilize the reciprocity of up channel and down channel, in described channel, transmit data with UE;
The described reciprocity of utilizing up channel and down channel comprises: what the descending channel information that UE is reported was surveyed as SRS supplements, the frequency subband that down channel measuring-signal is surveyed is made as the frequency subband that at least two cover SRS do not survey, and the frequency subband that down channel measuring-signal is surveyed forms complementation with the frequency subband that at least two cover SRS survey.
2. the sending method of uplink sounding reference signal according to claim 1, it is characterized in that, describedly in described channel, comprise with UE transmission data, base station is according to the information of described channel, send downlink data at described channel, or base station is according to the information of described channel, indication UE sends upstream data at described channel.
3. the sending method of uplink sounding reference signal according to claim 1, it is characterized in that, describedly in described channel, comprise with UE transmission data, base station is according to the information of described channel, send downlink data at described channel, and indicate UE to send upstream data at described channel.
4. the sending method of uplink sounding reference signal according to claim 1, is characterized in that, the described cycle comprises the cycle of Infinite Cyclic or the cycle of limited circulation.
5. the sending method of uplink sounding reference signal according to claim 1, it is characterized in that, described channel comprises frequency subband, the described SRS of corresponding cover separately that sends to base station according to the cycle of every cover SRS self in channel comprises, in different frequency subbands, sends the SRS of corresponding cover separately according to the cycle of every cover SRS self to base station.
6. the sending method of uplink sounding reference signal according to claim 1, is characterized in that, the cycle of respectively overlapping SRS is all the relation of integral multiple.
7. according to the sending method of uplink sounding reference signal described in claim 1 or 6, it is characterized in that, do not send in the same time many cover SRS, preferentially send short-period SRS.
8. the sending method of uplink sounding reference signal according to claim 1, it is characterized in that, in the time disposing two cover SRS, the power of two cover SRS is unequal, high-power SRS is sent to the base station place of Fei Zhe community, and the SRS that power is little is sent to the base station place of this community.
9. the sending method of uplink sounding reference signal according to claim 1, is characterized in that, described base station comprises to UE configuration at least two cover SRS, described base station configuration UE at least two cover SRS, and the parameters of informing at least two cover SRS described in UE by main carrier; Described channel comprises described main carrier and member carrier CC to be detected.
10. the sending method of uplink sounding reference signal according to claim 1, it is characterized in that, described channel comprises the frequency chunks of discontinuous distribution in carrier wave, the described SRS of corresponding cover separately that sends to base station according to the cycle of every cover SRS self in channel comprises, in different frequency chunks, sends the SRS of corresponding cover separately according to the cycle of every cover SRS self to base station.
11. sending methods of uplink sounding reference signal according to claim 1, is characterized in that, described base station comprises to UE configuration at least two cover SRS, described base station configuration UE at least two cover SRS, and the parameters of informing at least two cover SRS described in UE by main carrier; Described channel comprises activation carrier wave and un-activation carrier wave; The described SRS of corresponding cover separately that sends to base station according to the cycle of every cover SRS self in channel comprises, in described activation carrier wave and/or described un-activation carrier wave, sends the SRS of corresponding cover separately according to the cycle of every cover SRS self to base station.
12. sending methods of uplink sounding reference signal according to claim 5, it is characterized in that, described base station is to further comprising before UE configuration at least two cover SRS, the information of being determined the frequency subband that described configuration at least two cover SRS do not survey by down channel measuring-signal, the frequency subband that described down channel measuring-signal is surveyed forms complementation with the frequency subband of described SRS detection; Described downlink reference signal detects channel information in the time not sending SRS.
13. sending methods of uplink sounding reference signal according to claim 1, is characterized in that, described SRS is according to the logic port pattern configurations of UE by base station.
14. sending methods of uplink sounding reference signal according to claim 1, is characterized in that, are independently or relevant between described at least two cover SRS.
15. sending methods of uplink sounding reference signal according to claim 1, is characterized in that, described method further comprises and triggers SRS or stop SRS.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US10159052B2 (en) | 2012-08-03 | 2018-12-18 | Qualcomm Incorporated | Method and apparatus for sounding reference signal triggering and power control for coordinated multi-point operations |
| WO2014019214A1 (en) * | 2012-08-03 | 2014-02-06 | Broadcom Corporation | Method and apparatus for managing uplink operations |
| CN107241754B (en) * | 2017-06-08 | 2021-03-30 | 上海无线通信研究中心 | Adaptive uplink reference signal transmission method and corresponding functional unit |
| CN109842474B (en) * | 2017-11-28 | 2020-11-27 | 华为技术有限公司 | Transmission indication method, device and system, and storage medium |
| CN112399561B (en) * | 2019-08-12 | 2024-05-03 | 华为技术有限公司 | Communication method and device |
| CN112822785A (en) * | 2021-01-14 | 2021-05-18 | 上海移远通信技术股份有限公司 | Data transmission method, device and system and readable storage medium |
| WO2023087225A1 (en) * | 2021-11-18 | 2023-05-25 | 北京小米移动软件有限公司 | Method and apparatus for transmitting reference signal for positioning purposes, and storage medium |
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| CN101674655A (en) * | 2009-10-14 | 2010-03-17 | 中兴通讯股份有限公司 | Method and system for acquiring information of uplink channel and downlink channel |
| CN101795145A (en) * | 2010-02-08 | 2010-08-04 | 中兴通讯股份有限公司 | Sending method and system for measuring reference signals |
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