CN106612556A - A resource configuration method for detection reference signals in a TDD LTE system - Google Patents
A resource configuration method for detection reference signals in a TDD LTE system Download PDFInfo
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- CN106612556A CN106612556A CN201510698143.9A CN201510698143A CN106612556A CN 106612556 A CN106612556 A CN 106612556A CN 201510698143 A CN201510698143 A CN 201510698143A CN 106612556 A CN106612556 A CN 106612556A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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Abstract
The invention brings forward a resource configuration method for detection reference signals in a TDD LTE system. The method comprises the steps of selecting an SRS resource for a UE from all UpPTS resources; sending the selected SRS resource to the UE via high-level signaling; when the maximum number of symbols of the UpPTS is 4 or 6, the selected SRS resource is the same as the UpPTS original symbol resource, or the UpPTS new symbol resource, or includes both the UpPTS original symbol resource and the new symbol resource; and UpSTS resource indication is included in the SRS-specific configuration information. The method of the present invention solves the problem of using the newly added UpPTS location for the SRS of trigger type 0 and trigger type 1 when there are more UpPTS symbol numbers and how to indicate the UpPTS symbol location.
Description
Technical field
The present invention relates to a kind of resource allocation method of the detection reference signal in LTE communication system, more particularly to TDD LTE systems.
Background technology
In existing LTE system, the detection of up channel is completed by sounding (detection) signal.Especially TDD LTE, eNB not only can obtain uplink channel status by SRS, further carry out scheduling of resource and the measurement of uplink, including RI (Rank Indication, order instruction)/PMI (Precoding Matrix Indicator, pre-coding matrix is identified) measurement of/CQI (Channel Quality Indication, channel quality indicate) etc.；But also exploitable channel reciprocity, obtain downlink channel condition.
Terminal sends SRS (Sounding Reference Symbol, detection reference signal) in the last symbol of up no special subframe.And up special subframe, one or two symbol can be accounted for according to UpPTS in different special subframe configurations, SRS can simultaneously account for the two symbol of UpPTS.
SRS in LTE system can be in the form of periodicity sends, i.e., terminal unit persistently sends sounding signals with certain cycle, until the state transmitted into no data, referred to as triggers the SRS (SRS of Trigger type 0) of type 0.The parameter of periodicity SRS is by high-rise configuration, including the CS (Cycle Shift, cyclic shift) of SRS, bandwidth, frequency parameter, the cycle and sends subframe position etc..Send subframe position configuration information and include SRS cycle TsSRSAnd SRS biasing Toffset.The cycle of cycle SRS and sub-frame offset configuration are as follows in TDD LTE.
| SRS Configuration Index ISRS | TSRS(ms) | Toffset |
| 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 |
| SRS Configuration Index ISRS | TSRS(ms) | Toffset |
| 9 | 2 | 3,4 |
| 10–14 | 5 | ISRS–10 |
| 15–24 | 10 | ISRS–15 |
| 25–44 | 20 | ISRS–25 |
| 45–84 | 40 | ISRS–45 |
| 85–164 | 80 | ISRS–85 |
| 165–324 | 160 | ISRS–165 |
| 325–644 | 320 | ISRS–325 |
| 645–1023 | reserved | reserved |
For the cycle means comprising 2 SRS resources in a field, as satisfaction (k for the SRS of 2msSRS-Toffset) mod 5=0 moment send out SRS；When 2ms is more than in the cycle, (10n is metf+kSRS-Toffset)mod TSRS=0 moment sends out SRS.Wherein kSRSRepresent that a frame in may carry UpPTS character positions in the subframe or special subframe of SRS, it is as shown in the table.
SRS in LTE system so can also can improve SRS resource utilization rate in the form of aperiodicity sends, and reduce the expense of SRS resource, referred to as trigger the SRS (Trigger type 1SRS) of Class1.From unlike periodicity SRS, aperiodic, SRS was base station dynamic activation, and terminal unit can just send sounding signals after activation, and its cycle is designated as TSRS,1, sub-frame offset is designated as Toffset,1.By sounding aperiodic, the transmission of periodicity SRS is closed or reduced to the channel information that base station can be needed with more flexible acquisition, so as to reduce the physical resource expense of SRS during conditions permit.Likewise, for the cycle means comprising 2 SRS resources in a field, as satisfaction (k for the triggering Class1 SRS of 2msSRS-Toffset,1) mod 5=0 moment send out triggering Class1 SRS；For SRS of the cycle more than 2ms, (10n is metf+kSRS-Toffset,1)mod TSRS,1=0 moment sends out the SRS of triggering Class1.In TDD LTE aperiodic SRS cycle and sub-frame offset configuration it is as follows.
| SRS Configuration Index ISRS | TSRS,1(ms) | Toffset,1 |
| 0 | reserved | reserved |
| 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 | ISRS–10 |
| 15–24 | 10 | ISRS–15 |
| 25–31 | reserved | reserved |
In the prior art, the SRS capacity in system is limited to cyclic shift number and pectination value.Especially in the two-dimensional antenna array of TDD LTE, SRS can support the MU-MIMO for dispatching higher number simultaneously.So needing to expand SRS capacity.In RAN182 meeting, the symbol numbers for having passed through to increase in UpPTS in the sub- problem of FD-MIMO are used to send the conclusion of SRS, but how to indicate which UpPTS symbol is not solved for the problem of SRS.
The content of the invention
For the problems referred to above, the present invention proposes a kind of resource allocation method of the detection reference signal in TDD LTE systems, including：The resource of transmission detection reference signal SRS is selected for user equipment (UE) from whole UpPTS resources of a special subframe；The SRS resource information of the selection is handed down to by the UE by high-level signaling.
Further, the maximum symbol numbers of the UpPTS of one special subframe are 4 or 6.
Further, the SRS resource of the selection is all UpPTS original sign resources, or is all the newly-increased sign resources of UpPTS, or while includes the former sign resources of UpPTS and newly-increased sign resources.
Further, also include：1 is indicated in the specific configuration information of SRS using the UpPTS resources of the newly-increased symbols of UpPTS or the former symbol transmission SRS comprising for instruction.
Further, the value and implication of the UpPTS resources instruction 1 are as follows：
When the total symbolic numbers of the UpPTS are 4,
| Value | Implication | Corresponding kSRS |
| 0 | SRS is sent according to SRS cycles and sub-frame offset configuration | 0 and 1 |
| 1 | Original UpPTS resources are replaced using the newly-increased symbols of UpPTS | 0 and 1 |
And/or,
When the total symbolic numbers of the UpPTS are 6,
| Value | Implication | Corresponding kSRS |
| 0 | SRS is sent according to SRS cycles and sub-frame offset configuration | 0 and 1 |
| 1 | Latter two symbol increased newly using UpPTS replaces original UpPTS resources | 0 and 1 |
| 2 | The first two symbol increased newly using UpPTS replaces original UpPTS resources | 0 and 1 |
Further, also include：2 are indicated in the specific configuration information of SRS using the UpPTS resources which symbol of UpPTS sends SRS comprising for instruction.
Further, the value and implication of the UpPTS resources instruction 2 are as follows：
When the total symbolic numbers of the UpPTS are 4,
| Value | Implication | Corresponding kSRS |
| 1 | Using first and second symbol of UpPTS | 0 and 1 |
| 2 | First symbol increased newly using UpPTS | 1 |
| 3 | Second symbol increased newly using UpPTS | 1 |
| 4 | Two symbols increased newly using UpPTS | 0 and 1 |
| 5 | First symbol of first symbol and UpPTS increased newly using UpPTS | 0 and 1 |
| 6 | Second symbol of first symbol and UpPTS increased newly using UpPTS | 0 and 1 |
| 7 | First symbol of second symbol and UpPTS increased newly using UpPTS | 0 and 1 |
| 8 | Second symbol of second symbol and UpPTS increased newly using UpPTS | 0 and 1 |
And/or,
When the total symbolic numbers of the UpPTS are 6,
| Value | Implication | Corresponding kSRS |
| 1 | Using first and second symbol of UpPTS | 0 and 1 |
| 2 | First symbol increased newly using UpPTS | 1 |
| 3 | Second symbol increased newly using UpPTS | 1 |
| 4 | The 3rd symbol increased newly using UpPTS | 1 |
| 5 | The 4th symbol increased newly using UpPTS | 1 |
| 6 | The first two symbol increased newly using UpPTS | 0 and 1 |
| 7 | Latter two symbol increased newly using UpPTS | 0 and 1 |
| Value | Implication | Corresponding kSRS |
| 8 | First symbol increased newly using UpPTS and the 3rd symbol | 0 and 1 |
| 9 | Second symbol increased newly using UpPTS and the 4th symbol | 0 and 1 |
| 10 | First symbol increased newly using UpPTS and the 4th symbol | 0 and 1 |
Further, also include in the specific configuration information of the SRS：The configuration of SRS bandwidth, SRS frequency hopping bandwidth, frequency original position, duration, SRS cycle and sub-frame offset and transmission comb information.
Further, also include in the specific configuration information of the SRS：SRS antenna port, SRS bandwidth, SRS frequency domain original positions, transmission comb and cyclic shift.
Further, also include：In a frame in of 5ms half at most 2 SRS resources of configuration.
The present invention is solved when there is more UpPTS symbol numbers, and the SRS of the SRS and triggering Class1 that trigger type 0 can configure the method using newly-increased UpPTS positions, include how to indicate that SRS resource is located at UpPTS character positions.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing to be used needed for embodiment or description of the prior art will be briefly described below.
The UpPTS structural representations for increasing two symbols newly that Fig. 1 is used for the present embodiment；
The UpPTS structural representations for increasing four symbols newly that Fig. 2 is used for the present embodiment；
K when Fig. 3 is 2 symbols for the GPsrs that embodiment 1 and embodiment 2 are proposedSRSValue schematic diagram；
K when Fig. 4 is 4 symbols for the GPsrs that embodiment 1 and embodiment 2 are proposedSRSValue schematic diagram.
Specific embodiment
To make purpose, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.
Embodiments of the invention propose a kind of resource allocation method of the detection reference signal in TDD LTE systems, including：The resource of transmission detection reference signal SRS is selected for user equipment (UE) from whole UpPTS resources of a special subframe；The SRS resource information of the selection is handed down to by the UE by high-level signaling.
In one alternate embodiment, the maximum symbol numbers of the UpPTS of special subframe are 4 or 6.
In one alternate embodiment, the SRS resource of selection is all UpPTS original sign resources, or is all the newly-increased sign resources of UpPTS, or while includes the former sign resources of UpPTS and newly-increased sign resources.
In one alternate embodiment, also include：1 is indicated in the specific configuration information of SRS using the UpPTS resources of the newly-increased symbols of UpPTS or the former symbol transmission SRS comprising for instruction.
In one alternate embodiment, the value and implication of UpPTS resources instruction 1 are as follows：
When the total symbolic numbers of the UpPTS are 4,
| Value | Implication | Corresponding kSRS |
| 0 | SRS is sent according to SRS cycles and sub-frame offset configuration | 0 and 1 |
| 1 | Original UpPTS resources are replaced using the newly-increased symbols of UpPTS | 0 and 1 |
And/or,
When the total symbolic numbers of the UpPTS are 6,
| Value | Implication | Corresponding kSRS |
| 0 | SRS is sent according to SRS cycles and sub-frame offset configuration | 0 and 1 |
| 1 | Latter two symbol increased newly using UpPTS replaces original UpPTS resources | 0 and 1 |
| 2 | The first two symbol increased newly using UpPTS replaces original UpPTS resources | 0 and 1 |
In one alternate embodiment, also include：2 are indicated in the specific configuration information of SRS using the UpPTS resources which symbol of UpPTS sends SRS comprising for instruction.
In one alternate embodiment, the value and implication of UpPTS resources instruction 2 are as follows：
When the total symbolic numbers of the UpPTS are 4,
| Value | Implication | Corresponding kSRS |
| 1 | Using first and second symbol of UpPTS | 0 and 1 |
| 2 | First symbol increased newly using UpPTS | 1 |
| 3 | Second symbol increased newly using UpPTS | 1 |
| 4 | Two symbols increased newly using UpPTS | 0 and 1 |
| 5 | First symbol of first symbol and UpPTS increased newly using UpPTS | 0 and 1 |
| 6 | Second symbol of first symbol and UpPTS increased newly using UpPTS | 0 and 1 |
| 7 | First symbol of second symbol and UpPTS increased newly using UpPTS | 0 and 1 |
| 8 | Second symbol of second symbol and UpPTS increased newly using UpPTS | 0 and 1 |
And/or,
When the total symbolic numbers of the UpPTS are 6,
| Value | Implication | Corresponding kSRS |
| 1 | Using first and second symbol of UpPTS | 0 and 1 |
| 2 | First symbol increased newly using UpPTS | 1 |
| Value | Implication | Corresponding kSRS |
| 3 | Second symbol increased newly using UpPTS | 1 |
| 4 | The 3rd symbol increased newly using UpPTS | 1 |
| 5 | The 4th symbol increased newly using UpPTS | 1 |
| 6 | The first two symbol increased newly using UpPTS | 0 and 1 |
| 7 | Latter two symbol increased newly using UpPTS | 0 and 1 |
| 8 | First symbol increased newly using UpPTS and the 3rd symbol | 0 and 1 |
| 9 | Second symbol increased newly using UpPTS and the 4th symbol | 0 and 1 |
| 10 | First symbol increased newly using UpPTS and the 4th symbol | 0 and 1 |
In one alternate embodiment, also include in the specific configuration information of SRS：The configuration of SRS bandwidth, SRS frequency hopping bandwidth, frequency original position, duration, SRS cycle and sub-frame offset and transmission comb information.
In one alternate embodiment, also include in the specific configuration information of SRS：SRS antenna port, SRS bandwidth, SRS frequency domain original positions, transmission comb and cyclic shift.
In one alternate embodiment, in a frame in of 5ms half at most 2 SRS resources of configuration.
The present invention is solved when there is more UpPTS symbol numbers, and the SRS of the SRS and triggering Class1 that trigger type 0 can configure the method using newly-increased UpPTS positions, include how to indicate that SRS resource is located at UpPTS character positions.
In following embodiment, it is related to two kinds of UpPTS symbol numbers situations, one to increase two symbols newly, and UpPTS is altogether 4 symbols；Two to increase four symbols newly, and UpPTS is altogether 6 symbols.It is to distinguish with former UpPTS, it is called GPsrs to increase UpPTS newly herein, that is, taking original GP symbols is used to send uplink SRS.Refer to Fig. 1 and Fig. 2.
Embodiment 1：The SRS of triggering type 0
The SRS parameters of high-level signaling configuration triggering type 0.
The first step：By special subframe configuration information, acquisition can be used to send the former UpPTS symbol numbers of SRS and newly-increased UpPTS symbol numbers, and it can be 2 or 4 to increase UpPTS symbol numbers newly.
Second step indicates the UE specific configuration informations of triggering type 0SRS, and except original SRS bandwidth, SRS frequency hopping bandwidth, frequency original position, duration, SRS cycle and sub-frame offset are configured, outside transmission comb information, extra increase by indicates to be referred to as GpSRSIndex.
When GPsrs is 2 symbols, GpSRSIndex is indicated comprising 2 values：
0, represent and still send SRS according to SRS cycles and sub-frame offset configuration；
1, expression replaces the resource location of original UpPTS with the symbol of Gpsrs.
Now kSRSValue such as Fig. 3.
When GPsrs is 4 symbols, GpSRSIndex is indicated comprising 3 values：
0, represent and still send SRS according to SRS cycles and sub-frame offset configuration；
1, expression replaces the resource location of original UpPTS with latter two symbol of Gpsrs；
2, expression replaces the resource location of original UpPTS with the first two symbol of Gpsrs.
Now kSRSValue is as shown in Figure 4.
Embodiment 2：Triggering type is 1 SRS
The first step：By special subframe configuration information, acquisition can be used to send the former UpPTS symbol numbers of SRS and newly-increased UpPTS symbol numbers, and it can be 2 to increase UpPTS symbol numbers newly, or 4.
Second step：The UE specific configuration informations of triggering Class1 SRS are indicated, in addition to original SRS antenna port, SRS bandwidth, SRS frequency domain original positions, transmission comb, cyclic shift, extra increase by indicates to be referred to as GpSRSIndex.
Remainder is same as Example 1.
Embodiment 3
UE still at most configures 2 resource locations, i.e. T in 5ms subframesSRS,12 are only have to be equal to during less than 5ms.2 resource locations of configuration can simultaneously comprising former resource location and newly-increased resource location, it is also possible to is all UpPTS originals symbol positions, or is all newly-increased symbol positions.K is indicated by high-level signalingSRS0 and 1 respectively correspond to which UpPTS resource.
In SRS configuration informations, increase a UpPTS symbol and indicate, can use multiple values, such as following table.
When the total symbolic numbers of UpPTS are 4,
| Value | Implication | Corresponding kSRS |
| 1 | Using first and second symbol of UpPTS | 0 and 1 |
| 2 | First symbol increased newly using UpPTS | 1 |
| 3 | Second symbol increased newly using UpPTS | 1 |
| 4 | Two symbols increased newly using UpPTS | 0 and 1 |
| 5 | First symbol of first symbol and UpPTS increased newly using UpPTS | 0 and 1 |
| 6 | Second symbol of first symbol and UpPTS increased newly using UpPTS | 0 and 1 |
| 7 | First symbol of second symbol and UpPTS increased newly using UpPTS | 0 and 1 |
| 8 | Second symbol of second symbol and UpPTS increased newly using UpPTS | 0 and 1 |
When the total symbolic numbers of UpPTS are 6,
| Value | Implication | Corresponding kSRS |
| 1 | Using first and second symbol of UpPTS | 0 and 1 |
| 2 | First symbol increased newly using UpPTS | 1 |
| 3 | Second symbol increased newly using UpPTS | 1 |
| 4 | The 3rd symbol increased newly using UpPTS | 1 |
| 5 | The 4th symbol increased newly using UpPTS | 1 |
| 6 | The first two symbol increased newly using UpPTS | 0 and 1 |
| 7 | Latter two symbol increased newly using UpPTS | 0 and 1 |
| 8 | First symbol increased newly using UpPTS and the 3rd symbol | 0 and 1 |
| 9 | Second symbol increased newly using UpPTS and the 4th symbol | 0 and 1 |
| 10 | First symbol increased newly using UpPTS and the 4th symbol | 0 and 1 |
By the various embodiments described above it can be seen that, the present invention maintains a frame in of 5ms half in prior art and at most configures 2 SRS resources, but the two SRS resources can be all UpPTS originals symbol positions, or be all newly-increased symbol positions, or while comprising former resource location and newly-increased resource location.When UpPTS length is longer such as 4 symbols or 6 symbols, it is capable of achieving to select from whole UpPTS resources and be allocated to UE as SRS resource.The present invention, substantially without impact, the resource distribution of the SRS of triggering type 0 and triggering Class1 is realized simply by high-level signaling to TDD LTE PHYs.
One of ordinary skill in the art will appreciate that：Realizing all or part of step of said method embodiment can be completed by the related hardware of programmed instruction, and aforesaid program can be stored in a computer read/write memory medium, and the program upon execution, performs the step of including said method embodiment；And aforesaid storage medium includes：ROM, RAM, magnetic disc or CD etc. are various can be with the medium of store program codes.
Finally it should be noted that：Above example only to illustrate technical scheme, rather than a limitation；Although being described in detail to the present invention with reference to the foregoing embodiments, it will be understood by those within the art that：It still can modify to the technical scheme described in foregoing embodiments, or carry out equivalent to which part technical characteristic；And these modifications or replacement, do not make the spirit and scope of the essence disengaging various embodiments of the present invention technical scheme of appropriate technical solution.
Claims (10)
1. the resource allocation method of the detection reference signal in a kind of TDD LTE systems, it is characterised in that
Including：
Select to send for user equipment (UE) from whole UpPTS resources of a special subframe and detect reference
The resource of signal SRS；
The SRS resource information of the selection is handed down to by the UE by high-level signaling.
2. method according to claim 1, it is characterised in that the UpPTS of one special subframe
Maximum symbol numbers be 4 or 6.
3. method according to claim 2, it is characterised in that the SRS resource of the selection is all
UpPTS original sign resources, or the newly-increased sign resources of UpPTS are all, or while including UpPTS
Former sign resources and newly-increased sign resources.
4. method according to claim 2, it is characterised in that also include：The specialized configuration of SRS
Comprising the UpPTS for increasing symbol or the former symbol transmission SRS newly using UpPTS for instruction in information
Resource indicates 1.
5. method according to claim 4, it is characterised in that the UpPTS resources indicate 1
Value and implication are as follows：
When the total symbolic numbers of the UpPTS are 4,
And/or,
When the total symbolic numbers of the UpPTS are 6,
6. method according to claim 2, it is characterised in that also include：The specialized configuration of SRS
2 are indicated in information using the UpPTS resources which symbol of UpPTS sends SRS comprising for instruction.
7. method according to claim 6, it is characterised in that the UpPTS resources indicate 2
Value and implication are as follows：
When the total symbolic numbers of the UpPTS are 4,
And/or,
When the total symbolic numbers of the UpPTS are 6,
8. the method according to claim 4 or 6, it is characterised in that the specialized configuration of the SRS
Also include in information：SRS bandwidth, SRS frequency hopping bandwidth, frequency original position, duration, SRS are all
Phase and sub-frame offset configuration and transmission comb information.
9. the method according to claim 4 or 6, it is characterised in that the specialized configuration of the SRS
Also include in information：SRS antenna port, SRS bandwidth, SRS frequency domain original positions, transmission comb and follow
Ring is shifted.
10. the method according to claim 1～9 any one, it is characterised in that also include：One
The frame ins of individual 5ms half at most 2 SRS resources of configuration.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111294926A (en) * | 2018-12-06 | 2020-06-16 | 华为技术有限公司 | SRS transmission method, access network equipment and terminal equipment |
| CN111971915A (en) * | 2018-04-28 | 2020-11-20 | 华为技术有限公司 | Method for transmitting sounding reference signal and terminal equipment |
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| CN102404074A (en) * | 2010-09-17 | 2012-04-04 | 电信科学技术研究院 | Transmission method and equipment of non-periodic SRS (Stimulated Raman scattering) in TDD (Time Division Duplexing) system |
| CN103327628A (en) * | 2012-03-19 | 2013-09-25 | 北京三星通信技术研究有限公司 | Method for transmitting special subframe signals of LTE TDD and equipment |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111971915A (en) * | 2018-04-28 | 2020-11-20 | 华为技术有限公司 | Method for transmitting sounding reference signal and terminal equipment |
| CN111971915B (en) * | 2018-04-28 | 2022-05-31 | 华为技术有限公司 | Method for transmitting sounding reference signal and terminal equipment |
| US11652670B2 (en) | 2018-04-28 | 2023-05-16 | Huawei Technologies Co., Ltd. | Method for transmitting sounding reference signal and terminal device |
| CN111294926A (en) * | 2018-12-06 | 2020-06-16 | 华为技术有限公司 | SRS transmission method, access network equipment and terminal equipment |
| CN111294926B (en) * | 2018-12-06 | 2023-01-06 | 华为技术有限公司 | SRS transmission method, access network equipment and terminal equipment |
| US11996959B2 (en) | 2018-12-06 | 2024-05-28 | Huawei Technologies Co., Ltd. | SRS transmission method, access network device, and terminal device |
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Application publication date: 20170503 |