WO2018082060A1

WO2018082060A1 - Method for processing sounding reference signal, and base station and user equipment

Info

Publication number: WO2018082060A1
Application number: PCT/CN2016/104775
Authority: WO
Inventors: 余政; 费永强; 程型清
Original assignee: 华为技术有限公司
Priority date: 2016-11-04
Filing date: 2016-11-04
Publication date: 2018-05-11
Also published as: CN109644445B; CN109644445A

Abstract

A method for processing a sounding reference signal, a base station and a user equipment. The method for processing a sounding reference signal comprises: configuring indication information used for indicating N symbols in a uplink pilot time slot (UpPTS) in a special subframe, wherein the N symbols are used for carrying an SRS repeatedly sent by a first user equipment (UE), the special subframe comprises: a downlink pilot time slot (DwPTS), a guard period (GP) and the UpPTS, and N is a natural number greater than 2; sending the indication information, the configuration thereof being complete, to the first UE; and receiving, on the N symbols in the UpPTS in the special subframe, the SRS sent by the first UE.

Description

Method for processing sounding reference signal and base station and user equipment

Technical field

The embodiments of the present invention relate to the field of communications, and in particular, to a method for processing a sounding reference signal, a base station, and a user equipment.

Background technique

In the current advanced Long Term Evolution-Advanced (LTE-A) system, an evolved Node B (eNB) needs to know the quality of the wireless communication channel of the User Equipment (UE). Therefore, the UE sends an uplink sounding reference signal (SRS) to the eNB, and the eNB estimates the uplink channel quality of each UE in different frequency bands by receiving and detecting the SRS, thereby being a physical resource block (Physical Resource Block). , PRB) allocation, modulation and coding methods, multi-antenna transmission parameter settings, etc. provide reference. The detection of SRS has an important influence on the performance of the wireless communication system. Especially in the multi-antenna communication system, the accuracy of the SRS is seriously related to the accuracy of the downlink beamforming (Beam Forming).

At present, in order to save site cost, improve wireless service and service continuity, operators have proposed the common site address and common coverage of the inter-frequency LTE-A system. For example, an eNB of a Frequency Division Dual (FDD) system with a carrier frequency of 1.8 GHz shares the same site with an eNB of a Time Division Dual (TDD) system with a carrier frequency of 3.5 GHz. Since the propagation path loss of the 3.5 GHz signal is larger than that of the 1.8 GHz signal, there is a problem that the coverage is different between the TDD system and the FDD system. The channel with the smallest link budget in the FDD system is the Physical Uplink Shared Channel (PUSCH), the link budget of other data channels, control channels or SRS signals in the TDD system, and the link budget of the FDS system PUSCH channel. The case is illustrated by taking the maximum coupling loss (MCL) of various channels as an example. The MCL is used to characterize the link budget of the signal power. For example, the MSCH of the PUSCH of the 1.8 GHz FDD system is 134.6 dB. The MRS of the SRS of the 3.5 GHz TDD system is 122.5 dB, and the difference between the two is about -12.2 dB. In the 3.5 GHz TDD system, the link budget of the SRS and the link budget of the 1.8 GHz FDD system have a gap of more than about 12 dB, and the requirement for co-site address and common coverage of the 1.8 GHz FDD system and the 3.5 GHz TDD system cannot be achieved. The performance of a 3.5 GHz TDD system will be severely affected.

Summary of the invention

The embodiment of the present invention provides a method for processing a sounding reference signal, a base station, and a user equipment, which can indicate that the SRS is repeatedly transmitted to the UE without changing the frame structure of the original special subframe, thereby realizing coverage enhancement of the SRS and ensuring channel detection. performance.

In a first aspect, the embodiment of the present invention provides a method for processing a sounding reference signal, including: configuring indication information for indicating N symbols in an uplink pilot time slot UpPTS in a special subframe, where the N symbols are used. And transmitting the SRS repeatedly sent by the first user equipment, where the special subframe includes: a downlink pilot time slot DwPTS, a guard interval GP, and the UpPTS, where the N is a natural number greater than 2; and sent to the first UE And configuring the indication information that is complete; receiving, by the N symbols in the UpPTS in the special subframe, the SRS sent by the first UE.

In the embodiment of the present invention, the base station may configure, by using the UpPTS in the special subframe, N symbols to carry the first UE to repeatedly send the SRS, and the base station sends the indication information to the first UE, so that the first UE can pass the indication information. Determining N symbols in the UpPTS in the special subframe, the first UE may repeatedly send the SRS on the N symbols. In the embodiment of the present invention, the base station instructs the first UE to perform SRS repeated transmission without increasing the uplink control signaling overhead and changing the UpPTS structure in the special subframe, thereby improving the detection performance of the SRS and realizing the coverage of the SRS. Enhanced to ensure channel estimation performance between the base station and the first UE.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the indication information carries an SRS configuration index, where the indication information indicates the N symbols by: configuring an index according to the one SRS Determining an SRS subframe offset set, where the SRS subframe offset set includes at least two SRS subframe offset subsets, the SRS configuration index indicating the at least two SRS subframe offset subsets And determining, by the different SRS subframe offset sub-set, the SRS subframe offset is different; determining, according to the SRS subframe offset indicated in the SRS subframe offset set, that the first UE repeatedly sends the SRS N symbols used. In the embodiment of the present invention, the base station instructs the first UE to use an SRS configuration index, which is similar to the manner in which the base station in the prior art indicates that the normal UE uses an SRS configuration index, so that the base station side does not need to change the uplink control signaling, and uses and An indication of coverage enhancement of the SRS can be completed by the same SRS configuration index of the normal UE.

With reference to the first aspect, in a second possible implementation manner of the first aspect, the indication information carries multiple SRS configuration indexes, where the indication information indicates the N symbols by: Determining, by the plurality of SRS configuration indexes, an SRS subframe offset set, where the SRS subframe offset set includes at least two SRS subframe offset subsets, and each SRS configuration index indicates one SRS subframe The offset sub-set, the SRS subframe offset indicated by the different SRS subframe offset subsets is different; determining, according to the SRS subframe offset indicated in the SRS subframe offset set, for the first UE to repeatedly send N symbols used by the SRS. In the embodiment of the present invention, the base station indicates that the first UE uses multiple SRS configuration indexes, and each SRS configuration index may indicate one SRS subframe offset sub-set, and the base station side only needs to indicate different SRS sub-segments according to multiple SRS configuration indexes. Frame offset sub-collection.

In conjunction with the first possible or second possible implementation of the first aspect, in a third possible implementation of the first aspect, each SRS subframe offset subset includes one or two SRS sub- a frame offset, and each SRS subframe offset subset in the SRS subframe offset set is an SRS subframe offset set supported by the second UE, and the number of symbols used by the first UE to send the SRS N is greater than the number of symbols used by the second UE to transmit the SRS. In the embodiment of the present invention, each SRS subframe offset subset supported by the first UE is an SRS subframe offset set supported by the second UE, and the SRS subframe offset set supported by the first UE may pass the The multiplexing of the SRS subframe offset set supported by the two UEs is completed.

In conjunction with the first possible or second possible implementation of the first aspect, in a fourth possible implementation of the first aspect, each SRS subframe offset in the SRS subframe offset set The first frequency of the first SRS subframe offset in the set is the same as the starting frequency resource used by the first UE to send the SRS. In the embodiment of the present invention, the same starting frequency resource is used by using the first SRS subframe offset in the multiple SRS subframe offset subsets, and the base station may follow the same start when receiving the SRS repeatedly sent by the first UE. The frequency resources are combined and detected to improve the channel detection quality.

With reference to the first possible or the second possible implementation of the first aspect, in a fifth possible implementation manner of the first aspect, each SRS subframe offset in the SRS subframe offset set The first start frequency resource used by the first UE to send the SRS on the symbol determined by the first SRS subframe offset in the set is the same, and the SRS subframe offset set includes different SRS subframes. And determining, by the second SRS subframe offset in the offset sub-set, that the first start frequency resource that the first UE sends the SRS is the same, and the first start frequency resource and the first The two starting frequency resources are different frequency resources. In the embodiment of the present invention, the same starting frequency resource is used by the first SRS subframe offset in the multiple SRS subframe offset subsets, and the second SRS subframe in the multiple SRS subframe offset subsets The offset uses the same starting frequency resource, and the base station repeatedly transmits the first UE. The SRS can be combined and detected according to the same starting frequency resource, thereby improving the channel detection quality.

In combination with the first aspect or the first possible or second possible or third possible or the fourth possible or the fifth possible implementation of the first aspect, in a sixth possible implementation of the first aspect The indication information used to indicate the N symbols in the uplink pilot time slot UpPTS in the special subframe includes: configured to instruct the first UE to repeatedly send the SRS by using the same starting frequency resource Indicates information for N symbols. In the embodiment of the present invention, the base station may configure the first UE to use the same starting frequency resource on the N symbols, and the base station may perform the combined detection according to the same starting frequency resource when receiving the SRS repeatedly sent by the first UE, thereby improving the channel. Quality of inspection.

In combination with the first aspect or the first possible second or first possible or the fourth possible or the fifth possible or the sixth possible possible implementation of the first aspect, the seventh aspect in the first aspect In a possible implementation manner, after the receiving, by the first UE, the SRS, on the N symbols in the UpPTS in the special subframe, the method further includes: on the N symbols The separately received SRSs are combined and detected to estimate the quality of the transmission channel.

In combination with the first aspect or the first possible or second possible aspect of the first aspect or the third possible or the fourth possible or the fifth possible or the sixth possible or the seventh possible implementation, in the first In an eighth possible implementation of the aspect, the N is a natural number greater than 2 and less than or equal to 6.

In a second aspect, the embodiment of the present invention further provides a method for processing a sounding reference signal, which includes: receiving indication information sent by a base station, where the indication information is used to indicate N in an uplink pilot time slot UpPTS in a special subframe. a symbol, the special subframe includes: a downlink pilot time slot DwPTS, a guard interval GP, and the UpPTS, where the N is a natural number greater than 2, and determining N in the UpPTS in the special subframe according to the indication information. The symbols are repeatedly transmitted on the N symbols in the UpPTS in the determined special subframe.

In the embodiment of the present invention, the base station may configure, by using the UpPTS in the special subframe, N symbols to carry the first UE to repeatedly send the SRS, and the base station sends the indication information to the first UE, so that the first UE can pass the indication information. Determining N symbols in the UpPTS in the special subframe, the first UE may repeatedly send the SRS on the N symbols. In the embodiment of the present invention, the base station instructs the first UR to perform SRS repeated transmission without increasing the uplink control signaling overhead and without changing the UpPTS structure in the special subframe, thereby improving the detection performance of the SRS and realizing the coverage of the SRS. Enhanced to ensure channel estimation performance between the base station and the first UE.

With reference to the second aspect, in a first possible implementation manner of the second aspect, the determining, by the indication information, the N symbols in the UpPTS in the special subframe, including: determining, according to the indication information, An SRS configuration index, where an SRS subframe offset set is determined according to the one SRS configuration index, where the SRS subframe offset set includes at least two SRS subframe offset subsets, where the SRS configuration index indicates At least two SRS subframe offset sub-sets, different SRS subframe offset sub-sets indicating different SRS subframe offsets; determining, according to the SRS subframe offset indicated in the SRS subframe offset set, The first UE repeatedly transmits the N symbols of the SRS. In the embodiment of the present invention, the base station instructs the first UE to use an SRS configuration index, which is similar to the manner in which the base station in the prior art indicates that the normal UE uses an SRS configuration index, so that the base station side does not need to change the uplink control signaling, and uses and An indication of coverage enhancement of the SRS can be completed by the same SRS configuration index of the normal UE.

With reference to the second aspect, in a second possible implementation manner of the second aspect, the determining, by the indication information, the N symbols in the UpPTS in the special subframe, includes: determining, according to the indication information, And determining, by the SRS configuration index, an SRS subframe offset set, where the SRS subframe offset set includes at least two SRS subframe offset subsets, and each SRS configuration index indication An SRS subframe offset sub-set, the SRS subframe offsets indicated by different SRS subframe offset subsets are different; and determining, according to the SRS subframe offset indicated in the SRS subframe offset set, A UE repeatedly transmits N symbols of the SRS. In the embodiment of the present invention, the base station indicates that the first UE uses multiple SRS configuration indexes, and each SRS configuration index may indicate one SRS subframe offset sub-set, and the base station side only needs to indicate different SRS sub-segments according to multiple SRS configuration indexes. Frame offset sub-collection.

With reference to the first possible or the second possible implementation of the second aspect, in a third possible implementation manner of the second aspect, the N symbols in the determined UpPTS in the special subframe The repeatedly transmitting the SRS includes transmitting the SRS using the same starting frequency resource on the symbol determined according to the first SRS subframe offset in each SRS subframe offset subset. In the embodiment of the present invention, the same starting frequency resource is used by using the first SRS subframe offset in the multiple SRS subframe offset subsets, and the base station may follow the same start when receiving the SRS repeatedly sent by the first UE. The frequency resources are combined and detected to improve the channel detection quality.

In combination with the first possible or second possible implementation of the second aspect, the fourth in the second aspect In a possible implementation manner, the repeatedly transmitting the SRS on the N symbols in the UpPTS in the determined special subframe includes: first shifting the first SRS sub-subset in the sub-set according to each SRS subframe Transmitting the SRS by using the same first starting frequency resource on the symbol determined by the frame offset; and second SRS subframe offset in different SRS subframe offset sub-sets according to the SRS subframe offset set Transmitting the SRS by using the same second starting frequency resource on the determined symbol, and the first starting frequency resource and the second starting frequency resource are different frequency resources. In the embodiment of the present invention, the same starting frequency resource is used by the first SRS subframe offset in the multiple SRS subframe offset subsets, and the second SRS subframe in the multiple SRS subframe offset subsets The offset uses the same starting frequency resource, and the base station can perform combined detection according to the same starting frequency resource when receiving the SRS repeatedly transmitted by the first UE, thereby improving channel detection quality.

With reference to the second aspect or the first possible or the second possible or the third possible or the fourth possible implementation of the second aspect, in a fifth possible implementation manner of the second aspect, the determining The SRS is repeatedly transmitted on the N symbols in the UpPTS in the special subframe, including: repeatedly transmitting the SRS on the N symbols using the same starting frequency resource. In the embodiment of the present invention, the base station may configure the first UE to use the same starting frequency resource on the N symbols, and the base station may perform the combined detection according to the same starting frequency resource when receiving the SRS repeatedly sent by the first UE, thereby improving the channel. Quality of inspection.

In combination with the second aspect or the first possible or second possible or third possible or the fourth possible or the fifth possible possible implementation of the second aspect, in a sixth possible implementation of the second aspect , N is a natural number greater than 2 and less than or equal to 6.

In a third aspect, the embodiment of the present invention further provides a base station, including: a configuration module, configured to configure indication information for indicating N symbols in an uplink pilot time slot UpPTS in a special subframe, the N symbols For transmitting the SRS repeatedly sent by the first user equipment UE, the special subframe includes: a downlink pilot time slot DwPTS, a guard interval GP, and the UpPTS, where the N is a natural number greater than 2, and a sending module is configured to The first UE sends the indication information that is configured to be complete, and the receiving module is configured to receive the SRS sent by the first UE on the N symbols in the UpPTS in the special subframe.

In a third aspect of the present invention, the constituent modules of the base station may also perform the steps described in the foregoing first aspect and various possible implementations, as described in the foregoing description of the first aspect and various possible implementations. .

In a fourth aspect, the embodiment of the present invention further provides a user equipment, where the user equipment is specifically a first UE, and includes: a receiving module, configured to receive indication information sent by a base station, where the indication information is used to indicate a special subframe. N symbols in the uplink pilot time slot UpPTS, the special subframe includes: a downlink pilot time slot DwPTS, a guard interval GP, and the UpPTS, wherein the N is a natural number greater than 2; a determining module, configured to The indication information determines N symbols in the UpPTS in the special subframe, and the sending module is configured to repeatedly send the SRS on the N symbols in the UpPTS in the determined special subframe.

In a fourth aspect of the present invention, the constituent modules of the first UE may also perform the steps described in the foregoing second aspect and various possible implementations, as described above in the second aspect and various possible implementations. instruction of.

DRAWINGS

1 is a system architecture diagram of a method for processing a sounding reference signal applied to a communication system according to the present invention;

2 is a schematic diagram of a scenario for implementing a common site address and a common coverage in a different frequency LTE-A system according to a method for processing a sounding reference signal according to the present invention;

FIG. 3 is a schematic block diagram of a method for processing a sounding reference signal according to an embodiment of the present invention;

4 is a schematic block diagram showing another method for processing a sounding reference signal according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a special subframe in which a normal UE sends an SRS in an UpPTS symbol according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a special subframe of the same symbol partial multiplexing of the coverage enhanced SRS and the normal SRS according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of a special subframe for transmitting an SRS equivalent to an enhanced SRS and a normal SRS according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of a special subframe for time division multiplexing of an enhanced SRS and a normal SRS according to an embodiment of the present invention; FIG.

9-a is a schematic structural diagram of a base station according to an embodiment of the present invention;

9-b is a schematic structural diagram of another base station according to an embodiment of the present invention;

FIG. 10 is a schematic structural diagram of a user equipment according to an embodiment of the present disclosure;

FIG. 11 is a schematic structural diagram of another base station according to an embodiment of the present disclosure;

FIG. 12 is a schematic structural diagram of another user equipment according to an embodiment of the present disclosure.

detailed description

In order to make the object, the features and the advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. The described embodiments are only a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention are within the scope of the present invention.

The terms "first", "second" and the like in the specification and claims of the present invention and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a particular order or order. It is to be understood that the terms so used are interchangeable as appropriate, and are merely illustrative of the manner in which the objects of the same. In addition, the terms "comprises" and "comprises" and "comprises", and any variations thereof, are intended to cover a non-exclusive inclusion so that a process, method, system, product, or device comprising a series of units is not necessarily limited to those elements, but may include Other units listed or inherent to these processes, methods, products or equipment.

First, the system architecture of the method for processing the sounding reference signal of the present invention is introduced. The present invention is mainly applied to an LTE system or an LTE-A system. The present invention can also be applied to other communication systems, for example, Wideband Code Division Multiple Access (WCDMA), Time Division-Synchronous Code Division Multiple Access (TD-SCDMA), and the like. As long as there is an entity in the communication system that can send information, other entities in the communication system can receive the information.

The coverage enhancement in the embodiment of the present invention may be repeated transmission, spread spectrum transmission, retransmission, bundle time interval transmission, narrowband (such as subcarrier scheduling) transmission, ultra narrowband (such as bandwidth of several tens of Hertz to ten thousand kilohertz) transmission, Improve one or more of power spectral density transmission, relaxed demand transmission, and continuous attempted transmission. A low-cost terminal or a low-complexity terminal means that the working bandwidth of the terminal device is smaller than the working bandwidth of the non-low-cost terminal or the non-low-complexity terminal. Working bandwidth can be processing bandwidth, RF processing bandwidth, baseband Handling one or more of the bandwidth. For example, the operating bandwidth is 1.4 MHz (or 200 KHz, or 180 KHz). The working bandwidth is a frequency resource with a specific frequency width. The working bandwidth may be composed of one or more subcarriers (eg, a subcarrier size of 15 Khz, or 2.5 KHz, or 3.75 KHz), or may be composed of one or more resource blocks.

Please refer to FIG. 1 , which is a system architecture diagram of a method for processing a sounding reference signal applied in a communication system according to the present invention. As shown in FIG. 1 , a base station (English name Base station) and user equipment (User Equipment, UE) 1 ～ UE6 constitutes a communication system, in which the base station transmits one or more of system information, RAR message and paging message to one or more UEs of UE1 to UE6, and the base station is the control information of the present invention. The transmitting end device in the transmission method, UE1 to UE6, is a receiving end device in the method for transmitting control information of the present invention. In addition, UE4 to UE6 also form a communication system, in which UE5 can be implemented as a function of a base station, and UE5 can send one or more of system information, RAR message and paging message to UE4 and UE6. One or more UEs.

The details are described below separately.

An embodiment of the method for processing a sounding reference signal of the present invention is applicable to a scenario in which a base station sends indication information to a UE, without increasing uplink control signaling overhead, and retaining an original UpPTS structure in a special subframe. Please refer to FIG. 2 , which is a schematic diagram of a scenario for implementing a common site address and a common coverage in a different frequency LTE-A system according to the processing method of the sounding reference signal of the present invention. A 3.5 GHz TDD system and a 1.8 GHz FDD system co-site. There are multiple UEs in the TDD system, such as UE1, UE2, UE3, UE4, and UE5, where UE3, UE4, and UE5 do not need SRS coverage enhancement, UE1 and UE2. The performance of the 3.5 GHz TDD system will be seriously affected due to the large link loss and the distance from the base station. Therefore, the SRS coverage enhancement needs to be performed on the UE1 and the UE2, and the method and the base station and the user equipment are described based on the subsequent embodiments of the present invention. In the case that the original UpPTS structure in the special subframe is reserved, the base station instructs the user equipment to repeatedly transmit the SRS.

In order to realize the co-site address and the common coverage of the 1.8 GHz FDD system and the 3.5 GHz TDD system, the SRS signal of the 3.5 GHz TDD system needs to be covered, and then the detection reference signal provided by the embodiment of the present invention is first described from the base station side. For the processing method, as shown in FIG. 3, a method for processing a sounding reference signal according to an embodiment of the present invention may include:

301. The indication information used to indicate the N symbols in the Uplink Pilot Time Slot (UpPTS) in the special subframe, where the N symbols are used to carry the repeated transmission by the first UE. The SRS, the special subframe includes: Downlink Pilot Time Slot (DwPTS), Gap Protect (GP), and UpPTS, where N is a natural number greater than 2.

In the embodiment of the present invention, the base station needs to indicate to the first UE that the first UE is to repeatedly send the SRS, and the base station needs to indicate which symbols in the UpPTS in the special subframe are repeatedly sent by the first UE, so the base station needs to First, the indication information for indicating N symbols is configured, where the N symbols are used to carry the SRS repeatedly sent by the first UE, and the number N of symbols used by the base station for repeatedly transmitting the SRS in the embodiment of the present invention is a natural number greater than 2. For example, the base station may indicate that the first UE uses four symbols in the UpPTS in the special subframe, and may also instruct the first UE to use six symbols in the UpPTS in the special subframe. The scene is determined.

In the embodiment of the present invention, the special subframe includes three parts: DwPTS, GP, and UpPTS, where the DwPTS transmits a downlink reference signal, and some control information may also be transmitted, and some short random access channels may be transmitted on the UpPTS ( Random Access Channel, RACH) and SRS information. The GP is the guard time between the uplink and the downlink. The special subframe is the same as the other subframes. The length of the special subframe is also 1S, but the length of each part in the special subframe is different. frame.

In the embodiment of the present invention, the base station configures, for the first UE, indication information for indicating N symbols, where the first UE may be a UE that needs coverage enhancement, for example, the first UE in FIG. 2 may specifically be UE1 and UE2, FIG. 2 In the illustrated TDD system, UE1 and UE2 are UEs that need coverage enhancement, and UE3, UE4, and UE5 refer to normal UEs, that is, UEs that do not need to be enhanced.

In the embodiment of the present invention, the N symbols that the base station indicates that the first UE is used to repeatedly send the SRS are the N symbols in the UpPTS in the special subframe, and the symbol may be a single carrier frequency division multiple access (Single-carrier Frequency- The Division Multiple Access (SC-FDMA) symbol, the N symbols may also be Orthogonal Frequency Division Multiplexing (OFDM) symbols.

In some embodiments of the invention, N is a natural number greater than 2 and less than or equal to 6. There may be one or more symbols in an UpPTS for transmitting the SRS, and the UE that does not need to cover the enhanced UE (ie, the normal UE) can only use one symbol or two symbols to send the SRS, so the normal UE uses the UpPTS. Up to 2 symbols. In the embodiment of the present invention, in order to implement coverage enhancement of the SRS, the UE that needs coverage enhancement needs to use more than 2 symbols to repeatedly send the SRS. For example, the value of N may be 3, 4, 5, and 6 in a special subframe. Normal UpPTS includes up to 2 symbols. The additional UpPTS can contain up to 4 symbols, so the UpPTS can contain up to 6 symbols in the time domain of the network side, so a maximum of 6 SRSs can be sent in a special subframe of an LTE-A TDD system, in order to be compatible with the current special. In the embodiment of the present invention, the value of N may be further determined to be a value less than or equal to 6. Preferably, the value of N is an even number. For example, the value of N may be 4 symbols or 6 symbols, so that the first UE can repeat 4 times or repeat the transmission SRS 6 times.

For example, the base station indicates, by using one SRS configuration index, the subframe offset of the normal UE to send the SRS, and each index specifies a subframe offset set of one UE. If the index is 0, the subframe offset set of the specified UE is {0. , 1}, each subframe offset set corresponds to the time domain symbol position of the SRS in the TDD frame. Therefore, in the existing solution, the normal UE can use one or two symbols to transmit the SRS in the UpPTS of a special subframe, that is, the normal UE can only use 2 at most in the prior art. Symbols to send SRS. In the embodiment of the present invention, for a UE that needs coverage enhancement, the base station configures more than two symbols for the UE that needs coverage enhancement to repeatedly send the SRS, and the coverage enhanced UE can repeat the transmission SRS for N times, and the specific value of N It can be determined in combination with the application scenario, which is not limited herein.

In the embodiment of the present invention, the indication information configured by the base station carries an SRS configuration index, where the indication information is used to indicate N symbols by:

A1. Determine an SRS subframe offset set according to an SRS configuration index, where the SRS subframe offset set includes at least two SRS subframe offset subsets, and the SRS configuration index indicates at least two SRS subframe offsets. Set, the SRS subframe offsets indicated by different SRS subframe offset subsets are different;

A2: Determine, according to the SRS subframe offset indicated in the SRS subframe offset set, N symbols used by the first UE to repeatedly transmit the SRS.

The base station may indicate that the first UE uses only one SRS configuration index, so that the first UE may determine one SRS subframe offset set according to one SRS configuration index, and then use the SRS subframe offset indicated in the SRS subframe offset set. Determining N symbols used by the first UE to repeatedly send the SRS, the base station instructing the first UE to use an SRS configuration index, which is similar to the manner in which the base station in the prior art indicates that the normal UE uses an SRS configuration index, so that the base station side In the embodiment of the present invention, the first UE is an UE that needs to be enhanced by the coverage, and the first UE is required to pass the uplink control signal, and the SRS configuration index is the same as that of the normal UE. The SRS configuration indexes can determine N symbols for repeatedly transmitting SRS, and N is a natural number greater than 2.

In the embodiment of the present invention, the SRS subframe offset set includes at least two SRS subframe offset subsets, and the SRS configuration index indicates at least two SRS subframe offset subsets, which are indicated by different SRS subframe offset subsets. The SRS subframe offset is different. For each SRS subframe offset sub-base station, the independent configuration is adopted, and all SRS subframe offset sub-collections are indicated by the same SRS configuration index.

In still other embodiments of the present invention, the indication information carries a plurality of SRS configuration indexes, and the indication information is used to indicate N symbols by:

B1. Determine, according to multiple SRS configuration indexes, an SRS subframe offset set, where the SRS subframe offset set includes at least two SRS subframe offset subsets, and each SRS configuration index indicates one SRS subframe offset. The subset of shifters, the SRS subframe offsets indicated by different SRS subframe offset subsets are different;

B2. Configure, according to the SRS subframe offset indicated in the SRS subframe offset set, N symbols used by the first UE to repeatedly transmit the SRS.

The base station may instruct the first UE to use multiple SRS configuration indexes, so that the first UE may determine one SRS subframe offset set according to multiple SRS configuration indexes, and then use the SRS subframe offset indicated in the SRS subframe offset set. Determining N symbols used by the first UE to repeatedly transmit the SRS, the base station instructing the first UE to use multiple SRS configuration indexes, each SRS configuration index may indicate one SRS subframe offset sub-collection, and the base station side only needs to follow The multiple SRS configuration indexes respectively indicate different SRS subframe offset sub-sets. In the embodiment of the present invention, the first UE is a UE that needs coverage enhancement, and the first UE can determine, by using multiple SRS configuration indexes, for repeated transmission. N symbols of SRS, N is a natural number greater than 2.

In the embodiment of the present invention, the SRS subframe offset set includes at least two SRS subframe offset subsets, and the SRS configuration index indicates at least two SRS subframe offset subsets, which are indicated by different SRS subframe offset subsets. The SRS subframe offset is different. For each SRS subframe offset sub-base station, the independent configuration is adopted, and all SRS subframe offset sub-sets are respectively indicated by different SRS configuration indexes.

Further, in the foregoing implementation scenarios of steps A1 to A2, B1 to B2, each SRS subframe offset subset includes one or two SRS subframe offsets, and each of the SRS subframe offset sets The SRS subframe offset sub-sets are all SRS subframe offset sets supported by the second UE, and the number of symbols used by the first UE to transmit the SRS is greater than the number of symbols used by the second UE to transmit the SRS.

The base station indicates one or more SRS configuration indexes, and the SRS configuration index can determine an SRS subframe offset set supported by the first UE, and each SRS subframe offset in the SRS subframe offset set supported by the first UE. The sub-sets are all SRS subframe offset sets supported by the second UE, and the number of symbols used by the first UE to transmit the SRS is greater than the number of symbols used by the second UE to transmit the SRS. For example, the second UE is the original normal UE, and the second UE can only send the SRS on the maximum of 2 symbols in the special subframe, and each SRS subframe offset subset supported by the first UE is supported by the second UE. The set of SRS subframe offsets, the SRS subframe offset set supported by the first UE may be completed by multiplexing the SRS subframe offset set supported by the second UE, for example, as follows: The frame offset set may be: {{0, 1}, {2, 3}, {4}, {5}}, where 0, 1, 2, 3, 4, 5 are in the UpPTS of the special subframe. For the 6 symbols, the symbol 0 in the UpPTS may be the subframe offset {0} in the additional UpPTS, and the symbol 1 in the UpPTS may specifically be the subframe offset {1} in the additional UpPTS, and the symbol 2 in the UpPTS is specific. The subframe 3 in the UpPTS may be the subframe offset {3} in the UpPTS, and the symbol 4 in the UpPTS may be the subframe offset in the normal UpPTS. {0}, the symbol 5 in the UpPTS may specifically be the subframe offset {1} in the normal UpPTS. All subframe offset subsets {0, 1} and {2, 3} and {4} and {5} are all subframe offset sets supported by the second UE, if the second UE does not support a certain subframe. The offset set, the subframe offset set that is not supported by the second UE is {0, 5}, then the subframe offset set of the first UE is a subset that may not include {0, 5}.

In some embodiments of the present invention, the first UE sent in the SRS subframe offset set in the SRS subframe offset set determines the start of the SRS used by the first UE on the determined symbol The frequency resources are the same.

The SRS subframe offset set supported by the first UE includes multiple SRS subframe offset subsets, and is determined by the first SRS subframe offset in each SRS subframe offset subset. The starting frequency resources used by the first UE to transmit the SRS are the same. For example, the SRS subframe offset set supported by the first UE is {{0, 1}, {2, 3}, {4}, { 5}}, the symbol 0 in the UpPTS may specifically be the subframe offset {0} in the additional UpPTS, and the symbol 1 in the UpPTS may specifically be the subframe offset {1} in the additional UpPTS, and the symbol 2 in the UpPTS is specific. The subframe 3 in the UpPTS may be the subframe offset {3} in the UpPTS, and the symbol 4 in the UpPTS may be the subframe offset in the normal UpPTS. {0}, the symbol 5 in the UpPTS may specifically be the subframe offset {1} in the normal UpPTS. Then the sub-frame offset sub-set {0, 1} and {2, 3} and {4} and {5} are sub-frame offset sub-sets supported by the first UE, respectively, for {0, 1} and {2, 3} and {4} and {5} An SRS subframe offset is: subframe offset 0, subframe offset 2, subframe offset 4, and subframe offset 5, and the first UE transmits the SRS on the symbol determined by the 4 subframe offsets. The starting frequency resources used are the same. For example, the first UE uses the frequency point 0 to transmit the SRS on the subframe offset 0, the subframe offset 2, the subframe offset 4, and the subframe offset 5. The same starting frequency resource is used by the first SRS subframe offset in the multiple SRS subframe offset subsets, and the base station may perform the combined detection according to the same starting frequency resource when receiving the SRS repeatedly sent by the first UE. , thereby improving the quality of channel detection.

In some embodiments of the present invention, the first SRS subframe offset in each of the SRS subframe offset subsets in the SRS subframe offset set is determined by the first UE sent by the SRS. The start frequency resources are all the same, and the second start frequency resource of the first UE transmitting the SRS on the symbol determined by the second SRS subframe offset in the different SRS subframe offset subsets included in the SRS subframe offset set All are the same, and the first starting frequency resource and the second starting frequency resource are different frequency resources.

The SRS subframe offset set supported by the first UE includes multiple SRS subframe offset subsets, and is determined by the first SRS subframe offset in each SRS subframe offset subset. The starting frequency resources used by the first UE to transmit the SRS are the same. For example, the SRS subframe offset set supported by the first UE is {{0, 1}, {2, 3}, {4, 5}. The symbol 0 in the UpPTS may be the subframe offset {0} in the additional UpPTS, and the symbol 1 in the UpPTS may be the subframe offset {1} in the additional UpPTS, and the symbol 2 in the UpPTS may be specifically The subframe offset in the UpPTS is {2}, and the symbol 3 in the UpPTS may be the subframe offset {3} in the additional UpPTS. The symbol 4 in the UpPTS may be the subframe offset in the normal UpPTS. }, the symbol 5 in the UpPTS may specifically be the subframe offset {1} in the normal UpPTS. Then the subframe offset subsets {0, 1} and {2, 3} and {4, 5} are respectively the subframe offset subsets supported by the first UE, for {0, 1} and {2, 3} And the first SRS subframe offset in {4, 5} is: subframe offset 0, subframe offset 2, subframe offset 4, and the first symbol determined by the 3 subframe offsets is first The starting frequency resources used by the UE to transmit the SRS are the same. For example, the first UE uses the frequency point 0 (ie, the first starting frequency resource) on the subframe offset 0, the subframe offset 2, and the subframe offset 4. Send SRS. The second SRS subframe offsets for {0, 1} and {2, 3} and {4, 5} are: subframe offset 1, subframe offset 3, subframe offset 5, respectively. The starting frequency resources used by the first UE to transmit the SRS are the same on the symbols determined by the three subframe offsets, for example, the first UE is used on the subframe offset 1, the subframe offset 3, and the subframe offset 5. Frequency point 7 (ie the second starting frequency resource) The SRS is sent, and the first starting frequency resource and the second starting frequency resource are two different frequency resources. The same starting frequency resource is used by the first SRS subframe offset in the multiple SRS subframe offset subsets, and the second SRS subframe offset in the multiple SRS subframe offset subsets uses the same The initial frequency resource, when receiving the SRS repeatedly sent by the first UE, the base station may perform combined detection according to the same starting frequency resource, thereby improving channel detection quality.

In some embodiments of the present invention, step 101 is configured to indicate indication information of N symbols in an uplink pilot time slot UpPTS in a special subframe, including:

C1. The indication information for instructing the first UE to repeatedly transmit the N symbols of the SRS by using the same starting frequency resource.

The base station may configure the first UE to use the same starting frequency resource on the N symbols, and the base station may perform combined detection according to the same starting frequency resource when receiving the SRS repeatedly sent by the first UE, thereby improving channel detection quality.

302. Send configuration indication information to the first UE.

In the embodiment of the present invention, the base station configures the foregoing indication information for the first UE, where the indication information is used to indicate N symbols in the UpPTS in the special subframe, and the base station sends the indication information to the first UE, so that the first The UE may receive the indication information from the base station, and the first UE parses the indication information, and may determine N symbols in the UpPTS in the special subframe indicated by the base station, and then the first UE may be in the special subframe. The SRS is repeatedly transmitted on the N symbols in the UpPTS. In this case, the base station may be triggered to perform the subsequent step 303.

303. Receive an SRS sent by the first UE on the N symbols in the UpPTS in the special subframe.

In the embodiment of the present invention, the first UE may repeatedly send the SRS on the N symbols in the UpPTS in the special subframe according to the indication of the base station, and the base station receives the first on the N symbols in the UpPTS in the special subframe. The SRS sent by the UE, thereby achieving coverage enhancement of the SRS.

In some embodiments of the present invention, after the step 303 receives the SRS sent by the first UE on the N symbols in the UpPTS in the special subframe, the processing method of the sounding reference signal sent by the embodiment of the present invention may further include the following steps. :

The combined detection of the SRSs received on the N symbols is performed to estimate the quality of the transmission channel.

For example, the measurement result of the base station originally for the single symbol SRS is y=f(x1). If the first UE repeatedly transmits the SRS in 6 symbols in the UpPTS in the special subframe, the base station sends the 6 symbols. The sent SRS uses the equal value combination detection, and is abstractly expressed as y=f((x1+x2+...+x6)/6), that is, the multi-symbols are combined and then measured, so that the channel detection quality can be improved.

The foregoing description of the present invention may be used to firstly configure the indication information for indicating the N symbols in the UpPTS in the special subframe, where the N symbols are used to carry the SRS repeatedly sent by the first UE, where the special subframe includes: The downlink pilot time slot DwPTS, the guard interval GP, and the UpPTS, where N is a natural number greater than 2, and then sends the configuration complete indication information to the first UE, and finally receives the first UE on the N symbols in the UpPTS in the special subframe. SRS sent. In the embodiment of the present invention, the base station may configure, in the UpPTS in the special subframe, N symbols to carry the first UE to repeatedly send the SRS, and the base station sends the indication information to the first UE, so that the first UE may determine by using the indication information. The N symbols in the UpPTS in the special subframe, the first UE may repeatedly send the SRS on the N symbols. In the embodiment of the present invention, the base station instructs the first UE to perform SRS repeated transmission without increasing the uplink control signaling overhead and changing the UpPTS structure in the special subframe, thereby improving the detection performance of the SRS and realizing the coverage of the SRS. Enhanced to ensure channel detection performance between the base station and the first UE.

In the foregoing embodiment, the processing method of the sounding reference signal provided by the embodiment of the present invention is described from the base station side, and then the processing method of the sounding reference signal provided by the embodiment of the present invention is described from the UE side. An embodiment of the method for processing a sounding reference signal of the present invention is applicable to a scenario in which a UE repeatedly transmits an SRS. The UE may refer to a first UE configured by the base station in the foregoing embodiment. Referring to FIG. 4, the method for processing the sounding reference signal may include the following steps:

401. Receive indication information sent by the base station, where the indication information is used to indicate N symbols in the UpPTS in the special subframe, where the special subframe includes: DwPTS, GP, and UpPTS, where N is a natural number greater than 2.

In the embodiment of the present invention, the first UE receives the indication information sent by the base station, where the first UE may be a UE that needs to be enhanced by the coverage, where the N symbols are used to carry the SRS repeatedly sent by the first UE. The number of symbols N used by the base station for repeatedly transmitting the SRS is a natural number greater than 2. For example, the base station may indicate that the first UE uses 4 symbols in the UpPTS in the special subframe, and may also indicate that the first UE uses the special subframe. 6 symbols in the UpPTS. The value of N in a specific scenario can be determined according to the application scenario.

In some embodiments of the invention, N is a natural number greater than 2 and less than or equal to 6. There may be one or more symbols in an UpPTS for transmitting the SRS, and the UE that does not need to cover the enhanced UE (ie, the normal UE) can only use one symbol or two symbols to send the SRS, so the normal UE Use up to 2 symbols in UpPTS. In the embodiment of the present invention, in order to implement coverage enhancement of the SRS, the UE that needs coverage enhancement needs to use more than 2 symbols to repeatedly send the SRS. For example, the value of N may be 3, 4, 5, and 6 in a special subframe. The normal UpPTS includes up to 2 symbols, and the attached UpPTS can contain up to 4 symbols. Therefore, the UpPTS can contain up to 6 symbols in the time domain on the network side, so a maximum of one subframe can be sent in a special subframe of an LTE-A TDD system. For the six SRSs, in order to be compatible with the UpPTS structure in the current special subframe, in the embodiment of the present invention, the value of N may be further determined to be a value less than or equal to 6. Preferably, the value of N is an even number. For example, the value of N may be 4 symbols or 6 symbols, so that the first UE can repeat 4 times or repeat the transmission SRS 6 times.

402. Determine, according to the indication information, N symbols in the UpPTS in the special subframe.

In the embodiment of the present invention, after the first UE receives the indication information from the base station, the first UE may parse the indication information, so that the N symbols in the UpPTS in the special subframe are determined by using the indication information.

In some embodiments of the present invention, step 401 determines N symbols in the UpPTS in the special subframe according to the indication information, including:

C1. Determine an SRS configuration index according to the indication information, and determine an SRS subframe offset set according to an SRS configuration index, where the SRS subframe offset set includes at least two SRS subframe offset subsets, and the SRS configuration index indicates at least Two SRS subframe offset sub-sets, different SRS subframe offsets indicated by different SRS subframe offset sub-sets;

C2. Determine, according to the SRS subframe offset indicated in the SRS subframe offset set, N symbols used by the first UE to repeatedly send the SRS.

The UE obtains an SRS configuration index indicated by the base station by using the indication information, and the first UE may determine an SRS subframe offset set according to an SRS configuration index, and then determine the SRS subframe offset indicated by the SRS subframe offset set. For the first UE to repeatedly transmit the N symbols used by the SRS, the base station instructs the first UE to use an SRS configuration index, which is similar to the manner in which the base station in the prior art indicates that the normal UE uses an SRS configuration index, so that the base station side does not The uplink control signal needs to be changed, and the indication of the coverage enhancement of the SRS is completed by using the same SRS configuration index as the normal UE. In the embodiment of the present invention, the first UE is a UE that needs to be enhanced, and the first UE passes an SRS. The configuration index can determine N symbols for repeatedly transmitting SRS, and N is a natural number greater than 2.

In some other embodiments of the present invention, step 401 determines, according to the indication information, N symbols in the UpPTS in the special subframe, including:

D1. Determine a plurality of SRS configuration indexes according to the indication information, and determine an SRS subframe offset set according to the multiple SRS configuration indexes, where the SRS subframe offset set includes at least two SRS subframe offset subsets, and each The SRS configuration index indicates an SRS subframe offset sub-set, and the SRS subframe offsets indicated by different SRS subframe offset sub-sets are different;

D2: Determine N symbols for the first UE to repeatedly send the SRS according to the SRS subframe offset indicated in the SRS subframe offset set.

The UE obtains multiple SRS configuration indexes indicated by the base station by using the indication information, and the first UE may use one SRS subframe offset set according to multiple SRS configuration indexes, and then use the SRS subframe offset indicated in the SRS subframe offset set. Determining N symbols used by the first UE to repeatedly transmit the SRS, the base station instructing the first UE to use multiple SRS configuration indexes, each SRS configuration index may indicate one SRS subframe offset sub-collection, and the base station side only needs to follow The multiple SRS configuration indexes respectively indicate different SRS subframe offset sub-sets. In the embodiment of the present invention, the first UE is a UE that needs coverage enhancement, and the first UE can determine, by using multiple SRS configuration indexes, for repeated transmission. N symbols of SRS, N is a natural number greater than 2.

403. Repeatly transmitting the SRS on the N symbols in the UpPTS in the determined special subframe.

In some embodiments of the present invention, step 403 repeatedly transmits the SRS on the N symbols in the UpPTS in the determined special subframe, including:

E1. The SRS is transmitted using the same starting frequency resource on the symbol determined according to the first SRS subframe offset in each SRS subframe offset subset.

The SRS subframe offset set supported by the first UE includes multiple SRS subframe offset subsets, and is determined by the first SRS subframe offset in each SRS subframe offset subset. The starting frequency resources used by the first UE to transmit the SRS are the same. For example, the SRS subframe offset set supported by the first UE is {{0, 1}, {2, 3}, {4}, { 5}}, the symbol 0 in the UpPTS may specifically be the subframe offset {0} in the additional UpPTS, and the symbol 1 in the UpPTS may specifically be the subframe offset {1} in the additional UpPTS, and the symbol 2 in the UpPTS is specific. Can be attached to a child in UpPTS The frame offset {2}, the symbol 3 in the UpPTS may be the subframe offset {3} in the additional UpPTS, and the symbol 4 in the UpPTS may be the subframe offset {0} in the normal UpPTS, in the UpPTS. The symbol 5 may specifically be the subframe offset {1} in the normal UpPTS. Then the subframe offset sub-sets {0, 1} and {2, 3} and {4} and {5} are the sub-frame offset sub-sets supported by the first UE, respectively, for {0, 1} and {2, The first SRS subframe offsets in 3} and {4} and {5} are: subframe offset 0, subframe offset 2, subframe offset 4, and subframe offset 5, respectively. The start frequency resource used by the first UE to transmit the SRS on the symbol determined by the frame offset is the same, for example, on the subframe offset 0, the subframe offset 2, the subframe offset 4, and the subframe offset 5 A UE uses frequency point 0 to transmit the SRS. The same starting frequency resource is used by the first SRS subframe offset in the multiple SRS subframe offset subsets, and the base station may perform the combined detection according to the same starting frequency resource when receiving the SRS repeatedly sent by the first UE. , thereby improving the quality of channel detection.

In some other embodiments of the present invention, step 403 repeatedly transmits the SRS on the N symbols in the UpPTS in the determined special subframe, including:

F1. Sending an SRS using the same first starting frequency resource on the symbol determined according to the first SRS subframe offset in each SRS subframe offset subset;

F2. Sending the SRS by using the same second starting frequency resource on the symbol determined according to the second SRS subframe offset in the different SRS subframe offset subsets included in the SRS subframe offset set, and starting from the first The start frequency resource and the second start frequency resource are different frequency resources.

The SRS subframe offset set supported by the first UE includes multiple SRS subframe offset subsets, and is determined by the first SRS subframe offset in each SRS subframe offset subset. The starting frequency resources used by the first UE to transmit the SRS are the same. For example, the SRS subframe offset set supported by the first UE is {{0, 1}, {2, 3}, {4, 5}. The symbol 0 in the UpPTS may be the subframe offset {0} in the additional UpPTS, and the symbol 1 in the UpPTS may be the subframe offset {1} in the additional UpPTS, and the symbol 2 in the UpPTS may be specifically The subframe offset in the UpPTS is {2}, and the symbol 3 in the UpPTS may be the subframe offset {3} in the additional UpPTS. The symbol 4 in the UpPTS may be the subframe offset in the normal UpPTS. }, the symbol 5 in the UpPTS may specifically be the subframe offset {1} in the normal UpPTS. Then the subframe offset subsets {0, 1} and {2, 3} and {4, 5} are respectively the subframe offset subsets supported by the first UE, for {0, 1} and {2, 3} And the first SRS subframe offset in {4, 5} is: subframe offset 0, subframe offset 2, subframe offset 4, and the first symbol determined by the 3 subframe offsets is first The starting frequency resources used by the UE to send SRS are the same, for example, The first UE uses the frequency point 0 (ie, the first starting frequency resource) to transmit the SRS on the subframe offset 0, the subframe offset 2, and the subframe offset 4. The second SRS subframe offsets for {0, 1} and {2, 3} and {4, 5} are: subframe offset 1, subframe offset 3, subframe offset 5, respectively. The starting frequency resources used by the first UE to transmit the SRS are the same on the symbols determined by the three subframe offsets, for example, the first UE is used on the subframe offset 1, the subframe offset 3, and the subframe offset 5. The frequency point 7 (ie, the second starting frequency resource) is used to transmit the SRS, and the first starting frequency resource and the second starting frequency resource are two different frequency resources. The same starting frequency resource is used by the first SRS subframe offset in the multiple SRS subframe offset subsets, and the second SRS subframe offset in the multiple SRS subframe offset subsets uses the same The initial frequency resource, when receiving the SRS repeatedly sent by the first UE, the base station may perform combined detection according to the same starting frequency resource, thereby improving channel detection quality.

G1, the SRS is repeatedly transmitted using the same starting frequency resource on the N symbols.

The foregoing embodiment of the present invention may be used to determine that the first UE may determine N symbols in the UpPTS in the special subframe by using the indication information, and the first UE may repeatedly send the SRS on the N symbols. In the embodiment of the present invention, the base station instructs the first UE to perform SRS repeated transmission without increasing the uplink control signaling overhead and changing the UpPTS structure in the special subframe, thereby improving the detection performance of the SRS and realizing the coverage of the SRS. Enhanced to ensure channel detection performance between the base station and the first UE.

To facilitate a better understanding and implementation of the foregoing solutions of the embodiments of the present invention, the following application scenarios are specifically illustrated.

In the current LTE-A TDD system, the normal UE does not need coverage enhancement, and the normal UE sends the SRS uplink to the eNB, and the SRS can be sent in the last SC-FDMA symbol of the uplink subframe, or in the UpPTS of the special subframe. Send it. The special subframe includes three parts: DwPTS, GP, and UpPTS. One or more SC-FDMA symbols can be used to transmit the SRS in one UpPTS. The resource in which the SRS is located may be represented by a subframe offset and a frequency resource. As shown in FIG. 5, it is a schematic diagram of a special subframe in which a normal UE sends an SRS in an UpPTS symbol according to an embodiment of the present invention, where the horizontal direction is a time domain dimension. The vertical direction is the frequency domain dimension.

From the time domain of the network side, the UpPTS contains up to six SC-FDMA symbols, so a maximum of six SRSs can be transmitted in a special subframe of an LTE-A TDD system. In the existing solution, from one UE, the UE can only transmit SRS by using at most 2 symbols in a special subframe. If two symbols in the UpPTS are allocated to the same UE for SRS transmission, the time offsets of the two symbols transmitting the SRS are configured in pairs, and the two SRSs have frequency hopping in the frequency domain. The receiving end receives the SRS sent by the UE, thereby estimating the channel condition of the UE.

For a normal UE, coverage enhancement is not required. Therefore, if two SRS symbols are sent in the UpPTS of a TDD system, SRS detection can be completed. However, for a UE that needs coverage enhancement, it is difficult to implement a larger inter-site scenario in the inter-frequency system. The SRS coverage is enhanced; and the frequency offsets of the two SRS symbols in the frequency domain are always configured in pairs, and the frequency hopping pattern is fixed, so the flexibility is low, and it is difficult to perform combined detection of SRS on a certain frequency band, further increasing The difficulty of SRS coverage enhancement.

The normal UpPTS contains 2 SC-FDMA symbols, and the additional UpPTS can contain up to 4 SC-FDMA symbols, so from the time domain of the network side, the UpPTS contains up to 6 SC-FDMA symbols, so one LTE-A TDD A maximum of 6 SRSs can be sent in a special subframe of the system. The base station indicates, by using an index, a subframe offset that the UE sends the SRS, and each index specifies a subframe offset set of the normal UE. If the index is 0, the subframe offset set of the UE is specified as {0, 1}, and each sub-sub- The set of frame offsets corresponds to the time domain symbol position of the SRS in the TDD frame.

In the architecture of the LTE-A TDD system provided by the embodiment of the present invention, how to enhance the coverage of the SRS is a problem that can be solved by the embodiment of the present invention, and the shared site is implemented in the inter-frequency LTE-A system shown in FIG. For example, in the embodiment of the present invention, when SRS coverage enhancement is performed, the SRS in the UpPTS is flexibly configured, so that the network side and the UE side are unified, and the SRS coverage enhanced UE can use up to 6 symbols in the UpPTS. Transmitting SRS, the subframe offset of each SRS symbol in the time domain can be independently configured, the starting frequency resources of different SRS symbols in the frequency domain can be independently configured, and 4) each SRS covers the SRS symbol between the enhanced UEs. The location can be complementarily multiplexed, and the receiving end performs combined detection on the same frequency resource of the SRS coverage enhanced user and the SRS signals of different subframe offsets to obtain channel quality information.

The network element involved in the application of the present invention includes a base station and a UE, wherein the base station is an entity on the network side for transmitting or receiving a signal, such as an eNB. The UE can be any type of terminal, such as a user equipment for machine type communication. In the embodiment of the present invention, the coverage enhanced SRS is repeated in the time domain of an UpPTS. Six times, the coverage enhanced SRS and the normal SRS can be transmitted in the same SC-FDMA symbol, that is, the same symbol partial multiplexing.

The scenario in one embodiment is as shown in FIG. 2, the TDD system and the FDD system co-site, and there are multiple UEs in the TDD system, where UE1 and UE2 need to perform SRS coverage due to large link loss and too far distance from the base station. Enhanced; UE3, UE4, and UE5 do not need to perform SRS coverage enhancement.

In the UpPTS of the special subframe of the TDD system, a maximum of six SC-FDMA symbols can be transmitted in the time domain, and these symbols can be used to carry the SRS, and the SRS coverage enhanced UE and the normal UE both send the SRS in the UpPTS, as shown in FIG. 6. The following is a schematic diagram of a special subframe for multiplexing the coverage enhanced SRS and the same symbol portion of the normal SRS according to an embodiment of the present invention. In this embodiment, the coverage enhanced SRS is partially multiplexed with the normal SRS, and the first UE is specifically illustrated as UE1 and UE2 in FIG. 2, and the SRS coverage enhancement scheme is implemented as follows:

1) Allow UE1 and UE2 to use the 6 SC-FDMA symbols in the UpPTS to transmit the SRS.

2) The base station indicates that the SRS subframe offset set of UE1 and UE2 is {subframe offset {0}{1}{2}{3} in the appended UpPTS, and the subframe offset {0}{1 in the normal UpPTS }}, the SRS subframe offset set includes a total of 6 subframe offset subsets, and the subsets do not overlap each other in the time domain, and are all subframe offset sets available to the normal UE. It can be seen that in the present embodiment, UE1 and UE2 use all 6 SC-FDMA symbols in one UpPTS to repeat the SRS transmission 6 times.

3) The starting frequency resources in each subframe offset subset of UE1 and UE2 are independently configured, and both are configured with the same starting frequency resource, that is, SRS {0}, {1} in the normal UpPTS. The SRS {0}, {1}, {2}, and {3} in the UpPTS are added, and the starting frequency resources are independently configured, and the same starting frequency resources are configured.

4) The SRS symbol position between UE1 and UE2 is complementarily multiplexed. Specifically, in this embodiment, in the UpPTS of the next special subframe, the starting frequency resources of the SRS symbols of the UE1 and the UE2 are mutually exchanged, for example, in the UpPTS of the current special subframe, the starting frequency resource used by the UE1 is For the frequency point 0, the starting frequency resource used by the UE2 is the frequency point 7. In the UpPTS of the next special subframe, the starting frequency resource used by the UE1 is the frequency point 7, and the starting frequency resource used by the UE2 is the frequency point 0.

5) The receiving end performs combined detection on the same starting frequency resource of the UE1 in the same UpPTS and the SRS of different subframe offsets. The same processing is done for UE2. Specifically, in this embodiment, the SRSs that are repeatedly transmitted by the UE1 and the UE2 in the UpPTS have the same starting frequency resource, and the receiving end performs combined detection on the SRS signals that are repeated six times to estimate the channel quality.

It should be added that this scheme is used as the SRS coverage enhancement scheme of the TDD system, but it does not mean that all UEs must use the SRS coverage enhancement scheme after the TDD system uses this scheme. For normal UEs (UE3, UE4, and UE5) that do not require SRS coverage enhancement, the transmission of their SRS still uses the traditional SRS transmission scheme, and is partially multiplexed with the SRS transmission scheme of the SRS coverage enhanced UE1 and UE2. Specifically, UE3 is instructed to use {subframe offset {0, 1}} in the appended UpPTS, UE4 is instructed to use {subframe offset {2, 3}} in the appended UpPTS, UE5 is instructed to use {normal UpPTS The subframe offsets in the {0, 1}} are all pairing indications. The use of this scheme does not affect the SRS multiplexing of normal UEs.

In the embodiment of the present invention, the coverage enhancement SRS is partially multiplexed with the normal SRS and the coverage is enhanced without increasing the uplink signaling overhead and the UpPTS frame structure is not changed, and the coverage of the SRS is enhanced, and the theoretical detection gain can reach 7.2. dB. The subframe offset and the starting frequency resource of the SRS symbol of the enhanced UE are flexibly configured to increase the uplink signaling overhead and the UpPTS frame structure is not changed, and the SRS repeat transmission, the complementary multiplexing, and the merge detection are implemented. Detection performance of the SRS at the receiving end.

In another embodiment of the present invention, the coverage enhanced SRS is repeated three times in the time domain of one UpPTS, and the coverage enhanced SRS uses the same time-frequency pattern as the normal SRS, that is, the same symbol multiplexing. The user UE1 is a user who needs to perform SRS coverage enhancement. The implementation of the SRS coverage enhancement scheme of the UE1 is as shown in FIG. 7 , which is a schematic diagram of a special subframe for the SRS and the normal SRS equivalent repeated transmission SRS according to an embodiment of the present invention.

Here, only the UE1 that performs SRS coverage enhancement is described, and other UEs that do not need to perform SRS coverage enhancement are consistent with the traditional SRS transmission scheme. In this embodiment, the coverage enhanced SRS is equivalent to the normal SRS repeated transmission. The implementation of SRS coverage enhancement of UE1 is as follows:

1) Allow UE1 to send 6 symbol length SRSs in the UpPTS.

2) The base station indicates that the subframe offset set used by UE1 is {subframe offset {0, 1} {2, 3} in the UpPTS, and the subframe offset {0, 1}} in the normal UpPTS. The set includes three subframe offset subsets, which do not overlap each other in the time domain, and are all subframe offset sets available to the normal UE. It can be seen that in this embodiment, UE1 repeats 6 transmissions of SRS using all 6 SC-FDMA symbols in one UpPTS.

3) indicating that the time domain symbol specified by the first subframe offset in each subframe offset subset of UE1 has the same first starting frequency resource, and the second subframe in each subframe offset subset of UE1 Sub-frame bias The time domain symbols specified by the shift have the same second start frequency resource, and the first start frequency resource is different from the second start frequency resource. Specifically, in the present embodiment, the {0} of the subframe offset {0, 1} in the UpPTS, the {2} in the subframe offset {2, 3} in the additional UpPTS, and the normal UpPTS are added. {0} in the subframe offset {0, 1} has the same first start frequency resource, and {1} of the subframe offset {0, 1} in the UpPTS is added, and the subframe offset in the additional UpPTS is added { {3} in 2, 3}, {1} in the subframe offset {0, 1} in the normal UpPTS have the same second starting frequency resource, the first starting frequency resource and the second starting frequency resource different. Moreover, the UE 1 has the same hopping pattern as the legacy SRS in each subframe offset subset.

4) In this embodiment, UE1 is not multiplexed with other UEs. In the UpPTS of the next special subframe, the SRS time-frequency pattern of UE1 changes according to the traditional SRS hopping pattern, and the subframe offset in the attached UpPTS is maintained. {0} of {0,1}, {2} of the subframe offset {2,3} in the attached UpPTS, and {0} of the subframe offset {0,1} in the normal UpPTS have the same The first starting frequency resource, the {1} of the subframe offset {0, 1} in the UpPTS, the {3} in the subframe offset {2, 3} in the attached UpPTS, and the subframe in the normal UpPTS {1} in the offset {0, 1} has the same second starting frequency resource, and the first starting frequency resource is different from the second starting frequency resource.

5) The receiving end performs combined detection on the same starting frequency resource of UE1 and SRS of different subframe offsets. Specifically, in this embodiment, UE1 has two sets of SRSs having the same starting frequency resource in the UpPTS, and the starting frequency resources of the two sets of SRS are different, and each group of SRSs is repeated three times in one UpPTS; The three SRS signals are combined and detected to estimate the channel quality.

In the solution of the present invention, the SRS sent by the UE1 in any of the indicated sub-frame offset sub-sets has the same time-frequency pattern as the conventional SRS, which is equivalent to the repeated transmission of the normal SRS, that is, the same symbol multiplexing. On the basis that the uplink signaling overhead is not increased and the UpPTS frame structure is not changed, the coverage enhanced SRS and the normal SRS are symbol-multiplexed, and the coverage enhancement of the SRS is realized, and the theoretical detection gain can reach 4.8 dB. The subframe offset and the starting frequency resource of the SRS symbol of the enhanced UE are flexibly configured to achieve the repeated transmission and the combined detection of the SRS, and the SRS of the receiving end is improved, without increasing the uplink signaling overhead and changing the structure of the UpPTS frame. Detection performance.

In another embodiment of the present invention, the coverage enhanced SRS is repeated four times in the time domain of one UpPTS, and the coverage enhanced SRS and the normal SRS are transmitted in different SC-FDMA symbols, and are also separately multiplexed. The user UE1 is a user who needs to perform SRS coverage enhancement. The implementation of the SRS coverage enhancement scheme is as shown in FIG. 8 , which is a cover-time multiplexing of the enhanced SRS and the normal SRS according to an embodiment of the present invention. Schematic diagram of the sub-frame.

In this embodiment, the coverage enhanced SRS is time division multiplexed with the normal SRS. For UE1, the SRS coverage enhancement scheme is implemented as follows:

1) Allow UE1 to send 6 symbol length SRSs in the UpPTS.

2) The base station indicates that the subframe offset set used by UE1 is {subframe offset {0}{1}{2}{3}} in the attached UpPTS, and the set includes 4 subframe offset sub-sets, these sub-sets The sets do not overlap each other in the time domain, and are all sets of subframe offsets available to the normal UE.

3) The starting frequency resources in each subframe offset sub-collection of the UE1 are independently configured, and both are configured with the same starting frequency resource; specifically, the SRS {0}, {1} of the UE1 in the attached UpPTS , {2}, {3} are all configured to have the same starting frequency resource.

4) In this embodiment, UE1 is not complementary to other UEs; in the UpPTS of the next special subframe, the time-frequency pattern changes, but each SRS still has the same starting frequency resource.

5) The receiving end performs combined detection on the same starting frequency resource of UE1 and SRS of different subframe offsets. Specifically, in this embodiment, the same starting frequency resource SRS of the UE1 is repeated four times in one UpPTS, and the receiving end performs combined detection on the SRS signals that are repeated four times to estimate the channel quality.

In the solution of the present invention, although the UE that allows the SRS coverage enhancement can transmit up to 6 symbol length SRSs in the UpPTS, it is not necessary to transmit the SRS of length 6 and the transmission length of the SRS is N (N is an integer, 2<N≤ 6) It is flexible to configure. In the application process of this embodiment, the length of the coverage enhanced SRS is configured to be 4.

In the foregoing embodiment of the present invention, the coverage enhancement SRS transmission and the normal SRS transmission are time-division multiplexed without increasing the uplink signaling overhead and the UpPTS frame structure is not changed, thereby realizing the SRS coverage enhancement, and the theoretical detection gain can be Up to 6dB. The subframe offset and the starting frequency resource of the SRS symbol of the enhanced UE are flexibly configured to achieve the repeated transmission of the SRS, and the detection performance of the SRS at the receiving end is improved, without increasing the uplink signaling overhead and changing the structure of the UpPTS frame.

It should be noted that the solution of the present invention is applicable not only to the inter-site co-site scenario of the inter-frequency base station but also to other scenarios requiring SRS enhancement. It can be seen from the foregoing description that the UE1 sends up to six SRSs in the UpPTS, the subframe offsets of the SRS are independently configured, and the starting frequency resources of the SRS are independently configured, and the SRSs of the coverage enhanced UE can be complementarily multiplexed. The receiving end performs combined detection on the SRS signal of the SRS coverage enhanced user. On the basis of no increase of uplink signaling overhead and no change of UpPTS frame structure, SRS repeated transmission and merge detection are used to improve the detection performance of SRS and implement SRS. The coverage is enhanced; the theoretical detection gain can reach 4.8dB to 7.2dB.

It should be noted that, for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations, but those skilled in the art should understand that the present invention is not limited by the described action sequence. Because certain steps may be performed in other sequences or concurrently in accordance with the present invention. In addition, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

In order to facilitate the implementation of the above solution of the embodiments of the present invention, related devices for implementing the above solutions are also provided below.

Referring to FIG. 9-a, a base station 900 according to an embodiment of the present invention may include: a configuration module 901, a sending module 902, and a receiving module 903, where

The configuration module 901 is configured to configure indication information for indicating N symbols in the uplink pilot time slot UpPTS in the special subframe, where the N symbols are used to carry the SRS repeatedly sent by the first user equipment UE, where The special subframe includes: a downlink pilot time slot DwPTS, a guard interval GP, and the UpPTS, where the N is a natural number greater than 2;

The sending module 902 is configured to send, to the first UE, the indication information that is configured to be complete;

The receiving module 903 is configured to receive the SRS sent by the first UE on the N symbols in the UpPTS in the special subframe.

In some embodiments of the present invention, the indication information carries an SRS configuration index, and the indication information configured by the configuration module 901 is used to indicate the N symbols according to the following: according to the one SRS configuration index, Determining an SRS subframe offset set, where the SRS subframe offset set includes at least two SRS subframe offset subsets, the SRS configuration index indicating the at least two SRS subframe offset subsets, The SRS subframe offsets indicated by the different SRS subframe offset sub-sets are different; and the SRS subframe offset configuration indicated in the SRS subframe offset set is used by the first UE to repeatedly send the SRS. N symbols.

In some embodiments of the present invention, the indication information carries a plurality of SRS configuration indexes, and the indication information configured by the configuration module 902 is used to indicate the N symbols by: configuring indexes according to multiple SRSs, Determining an SRS subframe offset set, wherein the SRS subframe offset set includes at least two SRS subframe offset subsets, and each SRS configuration index indicates one SRS subframe offset subset, different SRS sub- The SRS subframe offset indicated by the frame offset subset is different; configured according to the SRS subframe offset indicated in the SRS subframe offset set for the first UE repetition Send the N symbols used by the SRS.

In some embodiments of the present invention, each SRS subframe offset subset includes one or two SRS subframe offsets, and each SRS subframe offset in the SRS subframe offset set The set is the SRS subframe offset set supported by the second UE, and the number of symbols used by the first UE to transmit the SRS is greater than the number of symbols used by the second UE to send the SRS.

In some embodiments of the present invention, the first frequency used by the first UE to send the SRS is determined according to the determined symbol of the first SRS subframe offset in each SRS subframe offset subset. the same.

In some embodiments of the present invention, the first UE sends the first starting frequency resource used by the SRS according to the determined symbol of the first SRS subframe offset in each SRS subframe offset subset. All being the same, and the second SRS subframe offset in the different SRS subframe offset subsets included in the SRS subframe offset set is the second one of the first UE sending the SRS The start frequency resources are all the same, and the first start frequency resource and the second start frequency resource are different frequency resources.

In some embodiments of the present invention, the configuration module 901 is specifically configured to configure indication information for instructing the first UE to repeatedly send the N symbols of the SRS by using the same starting frequency resource.

In some embodiments of the present invention, as shown in FIG. 9-b, the base station 900 further includes: an SRS detection module 904, configured to receive, by the receiving module 903, N of the UpPTSs in the special subframe. After receiving the SRS sent by the first UE, the SRSs respectively received on the N symbols are combined and detected to estimate the quality of the transmission channel.

In some embodiments of the invention, the N is a natural number greater than 2 and less than or equal to 6.

Referring to FIG. 10, a user equipment is provided in the embodiment of the present invention. The user equipment is specifically a first UE 1000, and may include: a receiving module 1001, a determining module 1002, and a sending module 1003, where

The receiving module 1001 is configured to receive indication information sent by the base station, where the indication information is used to indicate N symbols in an uplink pilot time slot UpPTS in the special subframe, where the special subframe includes: a downlink pilot time slot DwPTS And a guard interval GP and the UpPTS, wherein the N is a natural number greater than 2;

The determining module 1002 is configured to determine, according to the indication information, N symbols in the UpPTS in the special subframe.

a sending module 1003, configured to determine, on the N symbols in the UpPTS in the special subframe Send SRS repeatedly.

In some embodiments of the present invention, the determining module 1002 is specifically configured to determine an SRS configuration index according to the indication information, and determine an SRS subframe offset set according to the one SRS configuration index, where the SRS is The subframe offset set includes at least two SRS subframe offset subsets, the SRS configuration index indicating the at least two SRS subframe offset subsets, and SRS subframes indicated by different SRS subframe offset subsets The offset is different; determining N symbols for the first UE to repeatedly send the SRS according to the SRS subframe offset indicated in the SRS subframe offset set.

In some embodiments of the present invention, the determining module 1002 is specifically configured to determine, according to the indication information, a plurality of SRS configuration indexes, and determine an SRS subframe offset set according to the multiple SRS configuration indexes, where The SRS subframe offset set includes at least two SRS subframe offset subsets, and each SRS configuration index indicates one SRS subframe offset subset, and the SRS subframe offset indicated by different SRS subframe offset subsets Different; determining, according to the SRS subframe offset indicated in the SRS subframe offset set, N symbols for the first UE to repeatedly send the SRS.

In some embodiments of the present invention, the sending module 1003 is specifically configured to use the same starting frequency on the symbol determined according to the first SRS subframe offset in each SRS subframe offset subset. The resource sends the SRS.

In some embodiments of the present invention, the sending module 1003 is specifically configured to use the same first start on the symbol determined according to the first SRS subframe offset in each SRS subframe offset subset. Transmitting, by the frequency resource, the SRS; using the same second starting frequency on a symbol determined according to a second SRS subframe offset in different SRS subframe offset subsets included in the SRS subframe offset set The resource sends the SRS, and the first starting frequency resource and the second starting frequency resource are different frequency resources.

In some embodiments of the present invention, the sending module 1003 is specifically configured to repeatedly send the SRS by using the same starting frequency resource on the N symbols.

It should be noted that the information interaction between the modules/units of the foregoing device, the execution process, and the like are based on the same concept as the method embodiment of the present invention, and the technical effects thereof are the same as the embodiment of the method of the present invention. Referring to the description in the foregoing method embodiments of the present invention, details are not described herein again.

The embodiment of the present invention further provides a computer storage medium, wherein the computer storage medium stores a program, and the program executes some or all of the steps described in the foregoing method embodiments.

Next, another base station provided by the embodiment of the present invention is introduced. Referring to FIG. 11, the base station 1100 includes:

The receiver 1101, the transmitter 1102, the processor 1103, and the memory 1104 (wherein the number of processors 1103 in the base station 1100 may be one or more, and one processor in FIG. 11 is taken as an example). In some embodiments of the present invention, the receiver 1101, the transmitter 1102, the processor 1103, and the memory 1104 may be connected by a bus or other means, wherein the bus connection is taken as an example in FIG.

Memory 1104 can include read only memory and random access memory and provides instructions and data to processor 1103. A portion of the memory 1104 may also include a non-volatile random access memory (English name: Non-Volatile Random Access Memory, English abbreviation: NVRAM). The memory 1104 stores operating systems and operational instructions, executable modules or data structures, or a subset thereof, or an extended set thereof, wherein the operational instructions can include various operational instructions for implementing various operations. The operating system can include a variety of system programs for implementing various basic services and handling hardware-based tasks.

The processor 1103 controls the operation of the base station, and the processor 1103 can also be referred to as a central processing unit (English full name: Central Processing Unit, English abbreviation: CPU). In a specific application, each component of the base station is coupled together by a bus system. The bus system may include a power bus, a control bus, and a status signal bus in addition to the data bus. However, for the sake of clarity, the various buses are referred to as bus systems in the figures.

The method disclosed in the foregoing embodiment of the present invention may be applied to the processor 1103 or implemented by the processor 1103. The processor 1103 can be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the processor 1103 or an instruction in a form of software. The processor 1103 may be a general-purpose processor, a digital signal processor (English full name: digital signal processing, English abbreviation: DSP), an application specific integrated circuit (English name: Application Specific Integrated Circuit, English abbreviation: ASIC), field programmable Gate array (English name: Field-Programmable Gate Array, English abbreviation: FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present invention may be implemented or carried out. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like. Combined with the implementation of the present invention The steps of the disclosed method may be directly embodied by the hardware decoding processor being executed or by a combination of hardware and software modules in the decoding processor. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in the memory 1104, and the processor 1103 reads the information in the memory 1104 and performs the steps of the above method in combination with its hardware.

In the embodiment of the present invention, the processor 1103 is configured to perform the step of processing the sounding reference signal performed by the base station side.

The following is another user equipment provided by the embodiment of the present invention. The user equipment is specifically the first UE. Referring to FIG. 12, the first UE 1200 includes:

The receiver 1201, the transmitter 1202, the processor 1203, and the memory 1204 (wherein the number of the processors 1203 in the first UE 1200 may be one or more, and one processor in FIG. 12 is taken as an example). In some embodiments of the present invention, the receiver 1201, the transmitter 1202, the processor 1203, and the memory 1204 may be connected by a bus or other means, wherein the bus connection is taken as an example in FIG.

Memory 1204 can include read only memory and random access memory and provides instructions and data to processor 1203. A portion of the memory 1204 may also include an NVRAM. The memory 1204 stores operating systems and operational instructions, executable modules or data structures, or a subset thereof, or an extended set thereof, wherein the operational instructions can include various operational instructions for implementing various operations. The operating system can include a variety of system programs for implementing various basic services and handling hardware-based tasks.

The processor 1203 controls the operation of the first UE, and the processor 1203 may also be referred to as a CPU. In a specific application, the components of the first UE are coupled together by a bus system. The bus system may include a power bus, a control bus, a status signal bus, and the like in addition to the data bus. However, for the sake of clarity, the various buses are referred to as bus systems in the figures.

The method disclosed in the foregoing embodiments of the present invention may be applied to the processor 1203 or implemented by the processor 1203. The processor 1203 can be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 1203 or an instruction in a form of software. The processor 1203 described above may be a general purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, discrete hardware component. The methods, steps, and logical block diagrams disclosed in the embodiments of the present invention may be implemented or carried out. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like. Combine The steps of the method disclosed in the embodiments of the present invention may be directly implemented by the hardware decoding processor, or performed by a combination of hardware and software modules in the decoding processor. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in the memory 1204, and the processor 1203 reads the information in the memory 1204 and completes the steps of the above method in combination with its hardware.

In the embodiment of the present invention, the processor 1203 is configured to perform the steps of the foregoing processing method of the sounding reference signal performed by the first UE.

It should be further noted that the device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be Physical units can be located in one place or distributed to multiple network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the embodiment. In addition, in the drawings of the device embodiments provided by the present invention, the connection relationship between the modules indicates that there is a communication connection between them, and specifically, one or more communication buses or signal lines can be realized. Those of ordinary skill in the art can understand and implement without any creative effort.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus necessary general hardware, and of course, dedicated hardware, dedicated CPU, dedicated memory, dedicated memory, Special components and so on. In general, functions performed by computer programs can be easily implemented with the corresponding hardware, and the specific hardware structure used to implement the same function can be various, such as analog circuits, digital circuits, or dedicated circuits. Circuits, etc. However, for the purposes of the present invention, software program implementation is a better implementation in more cases. Based on the understanding, the technical solution of the present invention, which is essential or contributes to the prior art, can be embodied in the form of a software product stored in a readable storage medium, such as a floppy disk of a computer. , U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc., including a number of instructions to make a computer device (may be A personal computer, server, or network device, etc.) performs the methods described in various embodiments of the present invention.

In conclusion, the above embodiments are only used to explain the technical solutions of the present invention, and are not limited thereto; although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still The technical solutions described in the above embodiments are modified, or some of the technical features are equivalently replaced; and these modifications or replacements do not detract from the essence of the corresponding technical solutions. The spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

A processing method for detecting a reference signal SRS, comprising:

And the indication information of the N symbols in the uplink pilot time slot UpPTS in the special subframe, where the N symbols are used to carry the SRS repeatedly sent by the first user equipment, where the special subframe includes: a pilot time slot DwPTS, a guard interval GP, and the UpPTS, wherein the N is a natural number greater than 2;

Sending the indication information that the configuration is completed to the first UE;

Receiving the SRS sent by the first UE on N symbols in an UpPTS in the special subframe.
The method according to claim 1, wherein the indication information carries an SRS configuration index, and the indication information is used to indicate the N symbols by:

Determining, according to the one SRS configuration index, an SRS subframe offset set, where the SRS subframe offset set includes at least two SRS subframe offset subsets, where the SRS configuration index indicates the at least two SRS subframe offset subset, different SRS subframe offsets indicated by different SRS subframe offset subsets are different;

Determining N symbols used by the first UE to repeatedly transmit the SRS according to the SRS subframe offset indicated in the SRS subframe offset set.
The method according to claim 1, wherein the indication information carries a plurality of SRS configuration indexes, and the indication information is used to indicate the N symbols by:

Determining, according to the multiple SRS configuration indexes, an SRS subframe offset set, where the SRS subframe offset set includes at least two SRS subframe offset subsets, and each SRS configuration index indicates one SRS sub a frame offset sub-set, the SRS subframe offsets indicated by different SRS subframe offset sub-sets are different;

Determining N symbols used by the first UE to repeatedly transmit the SRS according to the SRS subframe offset indicated in the SRS subframe offset set.
The method according to claim 2 or 3, wherein each SRS subframe offset subset includes one or two SRS subframe offsets, and each of the SRS subframe offset sets The SRS subframe offset sub-sets are all SRS subframe offset sets supported by the second UE, and the number of symbols used by the first UE to transmit the SRS is greater than the number of symbols used by the second UE to send the SRS.
Method according to claim 2 or 3, characterized in that said SRS subframe offset set The starting frequency resource used by the first UE to transmit the SRS is the same on the symbol determined by the first SRS subframe offset in each SRS subframe offset subset.
The method according to claim 2 or 3, wherein the symbol determined by the first SRS subframe offset in each SRS subframe offset subset in the SRS subframe offset set is The first start frequency resource used by the first UE to send the SRS is the same, and the second SRS subframe offset in the different SRS subframe offset subsets included in the SRS subframe offset set is determined by the second SRS subframe offset. The second start frequency resource of the first UE that sends the SRS is the same, and the first start frequency resource and the second start frequency resource are different frequency resources.
The method according to any one of claims 1 to 6, wherein the indicating information indicating the N symbols in the uplink pilot time slot UpPTS in the special subframe includes:

And indicating, by the first UE, indication information of repeatedly transmitting the N symbols of the SRS by using the same starting frequency resource.
The method according to any one of claims 1 to 7, wherein after receiving the SRS sent by the first UE on the N symbols in the UpPTS in the special subframe, The method also includes:

Combining detection of the SRSs respectively received on the N symbols, thereby estimating the quality of the transmission channel.
The method according to any one of claims 1 to 8, wherein the N is a natural number greater than 2 and less than or equal to 6.
A processing method for detecting a reference signal SRS, comprising:

Receiving indication information sent by the base station, where the indication information is used to indicate N symbols in the uplink pilot time slot UpPTS in the special subframe, where the special subframe includes: a downlink pilot time slot DwPTS, a guard interval GP, and a Said UpPTS, said N is a natural number greater than 2;

Determining N symbols in the UpPTS in the special subframe according to the indication information;

The SRS is repeatedly transmitted on the N symbols in the UpPTS in the determined special subframe.
The method according to claim 10, wherein the determining the N symbols in the UpPTS in the special subframe according to the indication information comprises:

Determining, according to the indication information, an SRS configuration index, and determining, according to the one SRS configuration index, an SRS subframe offset set, where the SRS subframe offset set includes at least two SRS subframe offset subsets, where The SRS configuration index indicates the at least two SRS subframe offset subsets, The SRS subframe offsets indicated by different SRS subframe offset sub-sets are different;

Determining, according to the SRS subframe offset indicated in the SRS subframe offset set, N symbols for the first UE to repeatedly send the SRS.
The method according to claim 10, wherein the determining the N symbols in the UpPTS in the special subframe according to the indication information comprises:

Determining, according to the indication information, a plurality of SRS configuration indexes, and determining, according to the multiple SRS configuration indexes, an SRS subframe offset set, where the SRS subframe offset set includes at least two SRS subframe offset subsets, And each SRS configuration index indicates one SRS subframe offset sub-set, and different SRS subframe offset sub-sets indicate different SRS subframe offsets;

Determining, according to the SRS subframe offset indicated in the SRS subframe offset set, N symbols for the first UE to repeatedly send the SRS.
The method according to claim 11 or 12, wherein the repeatedly transmitting the SRS on the N symbols in the UpPTS in the determined special subframe comprises:

The SRS is transmitted using the same starting frequency resource on the symbol determined according to the first SRS subframe offset in each SRS subframe offset subset.
The method according to claim 11 or 12, wherein the repeatedly transmitting the SRS on the N symbols in the UpPTS in the determined special subframe comprises:

Transmitting the SRS using the same first starting frequency resource on a symbol determined according to a first SRS subframe offset in each SRS subframe offset subset;

Transmitting the SRS using the same second starting frequency resource on a symbol determined according to a second SRS subframe offset in different SRS subframe offset subsets included in the SRS subframe offset set, and The first starting frequency resource and the second starting frequency resource are different frequency resources.
The method according to any one of claims 10 to 14, wherein the repeatedly transmitting the SRS on the N symbols in the UpPTS in the determined special subframe comprises:

The SRS is repeatedly transmitted using the same starting frequency resource on the N symbols.
The method according to any one of claims 10 to 15, wherein the N is a natural number greater than 2 and less than or equal to 6.
A base station, comprising:

a configuration module, configured to indicate indication information of the N symbols in the uplink pilot time slot UpPTS in the special subframe, where the N symbols are used to carry the SRS repeatedly sent by the first user equipment UE, The special subframe includes: a downlink pilot time slot DwPTS, a guard interval GP, and the UpPTS, where the N is a natural number greater than 2;

a sending module, configured to send, to the first UE, the indication information that is configured to be complete;

And a receiving module, configured to receive, by using the N symbols in the UpPTS in the special subframe, the SRS sent by the first UE.
The base station according to claim 17, wherein the indication information carries an SRS configuration index, and the indication information configured by the configuration module is used to indicate the N symbols according to the following manner: according to the one SRS Configuring an index to determine an SRS subframe offset set, where the SRS subframe offset set includes at least two SRS subframe offset subsets, the SRS configuration index indicating the at least two SRS subframe offsets a subset, the SRS subframe offsets indicated by different SRS subframe offset subsets are different; determining, according to the SRS subframe offset indicated in the SRS subframe offset set, that the first UE repeatedly sends the N symbols used by SRS.
The base station according to claim 17, wherein the indication information carries a plurality of SRS configuration indexes, and the indication information configured by the configuration module is used to indicate the N symbols according to the following manner: And determining, by the SRS configuration index, an SRS subframe offset set, where the SRS subframe offset set includes at least two SRS subframe offset subsets, and each SRS configuration index indicates one SRS subframe offset The set, the SRS subframe offsets indicated by the different SRS subframe offset sub-sets are different; and the SRS subframe offset configured in the SRS subframe offset set is configured to be used by the first UE to repeatedly send the SRS The N symbols used.
The base station according to claim 18 or 19, wherein each SRS subframe offset subset includes one or two SRS subframe offsets, and each of the SRS subframe offset sets The SRS subframe offset sub-sets are all SRS subframe offset sets supported by the second UE, and the number of symbols used by the first UE to transmit the SRS is greater than the number of symbols used by the second UE to send the SRS.
The base station according to claim 18 or 19, wherein the symbol determined by the first SRS subframe offset in each of the SRS subframe offset subsets in the SRS subframe offset set is The starting frequency resources used by the first UE to send the SRS are the same.
The base station according to claim 18 or 19, wherein the symbol determined by the first SRS subframe offset in each of the SRS subframe offset subsets in the SRS subframe offset set is The first start frequency resource used by the first UE to send the SRS is the same, and the second SRS subframe offset in the different SRS subframe offset subsets included in the SRS subframe offset set is determined. The second start frequency resource of the first UE that sends the SRS is the same, and the first start frequency resource and the second start frequency resource are different frequency resources.
The base station according to any one of claims 17 to 22, wherein the configuration module is configured to: configure N to instruct the first UE to repeatedly send the SRS by using the same starting frequency resource. The indication of the symbol.
The base station according to any one of claims 17 to 23, wherein the base station further comprises: an SRS detecting module, configured to: the receiving module, on the N symbols in the UpPTS in the special subframe After receiving the SRS sent by the first UE, performing combined detection on the SRSs respectively received on the N symbols, thereby estimating the quality of the transmission channel.
The base station according to any one of claims 17 to 24, wherein the N is a natural number greater than 2 and less than or equal to 6.
The user equipment UE is characterized in that the UE is specifically the first UE, and includes:

The receiving module is configured to receive the indication information sent by the base station, where the indication information is used to indicate N symbols in the uplink pilot time slot UpPTS in the special subframe, where the special subframe includes: a downlink pilot time slot DwPTS, Protecting the interval GP and the UpPTS, the N being a natural number greater than 2;

a determining module, configured to determine, according to the indication information, N symbols in an UpPTS in the special subframe;

And a sending module, configured to repeatedly send the SRS on the N symbols in the UpPTS in the determined special subframe.
The user equipment according to claim 26, wherein the determining module is configured to determine an SRS configuration index according to the indication information, and determine an SRS subframe offset set according to the one SRS configuration index, where The SRS subframe offset set includes at least two SRS subframe offset subsets, the SRS configuration index indicating the at least two SRS subframe offset subsets, indicated by different SRS subframe offset subsets The SRS subframe offset is different; determining N symbols for the first UE to repeatedly send the SRS according to the SRS subframe offset indicated in the SRS subframe offset set.
The user equipment according to claim 26, wherein the determining module is configured to determine a plurality of SRS configuration indexes according to the indication information, and determine an SRS subframe offset set according to multiple SRS configuration indexes. The SRS subframe offset set includes at least two SRS subframe offset subsets, and each SRS configuration index indicates one SRS subframe offset subset, different. The SRS subframe offset indicated by the SRS subframe offset sub-set is different; determining N times for the first UE to repeatedly send the SRS according to the SRS subframe offset indicated in the SRS subframe offset set symbol.
The user equipment according to claim 27 or 28, wherein the sending module is specifically configured to: on a symbol determined according to a first SRS subframe offset in each SRS subframe offset subset The SRS is transmitted using the same starting frequency resource.
The user equipment according to claim 27 or 28, wherein the sending module is specifically configured to: on a symbol determined according to a first SRS subframe offset in each SRS subframe offset subset Transmitting the SRS using the same first starting frequency resource; using the same on the symbol determined according to the second SRS subframe offset in different SRS subframe offset subsets included in the SRS subframe offset set The second starting frequency resource sends the SRS, and the first starting frequency resource and the second starting frequency resource are different frequency resources.
The user equipment according to any one of claims 26 to 30, wherein the sending module is specifically configured to repeatedly send the SRS by using the same starting frequency resource on the N symbols.
The user equipment according to any one of claims 26 to 31, wherein the N is a natural number greater than 2 and less than or equal to 6.