CN111200475B

CN111200475B - Interference coordination method and device for Sounding Reference Signal (SRS)

Info

Publication number: CN111200475B
Application number: CN201811379685.XA
Authority: CN
Inventors: 黄晖; 杨科文; 金新波; 曹丁月
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-11-16
Filing date: 2018-11-16
Publication date: 2021-09-21
Anticipated expiration: 2038-11-16
Also published as: WO2020098501A1; CN111200475A

Abstract

The embodiment of the invention discloses an interference coordination method and device for a Sounding Reference Signal (SRS). The method comprises the following steps: and obtaining SRS space domain characteristics corresponding to the first cell. Here, the SRS spatial signature includes SRS signal strength in each beam direction in the first cell and/or SRS interference strength in each beam direction in the first cell. And performing SRS interference coordination between the first cell and N co-frequency adjacent cells of the first cell according to the SRS signal strength in each beam direction in the first cell and/or the SRS interference strength in each beam direction in the first cell. By adopting the embodiment of the invention, the SRS interference between the first cell and the N same-frequency adjacent cells can be reduced, and the uplink throughput and the downlink beamforming performance of each cell can be improved.

Description

Interference coordination method and device for Sounding Reference Signal (SRS)

Technical Field

The present invention relates to the field of wireless communication technologies, and in particular, to a method and an apparatus for interference coordination of sounding reference signals.

Background

With the development of wireless communication technology, various new services come out endlessly, and the demands of different services on resources are different, which requires that various services in a wireless network in the future can use limited resources more efficiently. In a Long Term Evolution (LTE) system and a New Radio (NR) 5G system, Sounding Reference Signal (SRS) is an important uplink signal. The base station may estimate uplink channel quality through an SRS transmitted by a User Equipment (UE) with which a connection state is established. Particularly, in a time division duplex system, based on reciprocity of uplink and downlink channels, the base station can estimate the quality of the downlink channel according to the SRS sent by the UE, and further perform downlink beamforming. Therefore, in the current wireless communication technology field, how to improve the SRS signal-to-noise ratio becomes one of the problems to be solved urgently.

In the prior art, the SRS resource range theoretically usable by users in each cell is fixed, and when a base station allocates SRS resources to users in a cell, the base station usually only considers the SRS resources which are not allocated to be used in the SRS resource range usable by the base station, so that orthogonality of the users in the cell can be ensured. With the implementation of time division multiplexing, space division multiplexing and other technologies, the same SRS resource may be used between adjacent cells. However, as the number of users increases, more and more users are allocated with the same SRS resource, and due to lack of a suitable mechanism for coordinating SRS resources between cells, the SRS interference between cells is increased, which further affects the estimation of uplink channels of the base station and reduces the uplink throughput and downlink beamforming performance of the cell.

Disclosure of Invention

The embodiment of the invention provides an interference coordination method and device for a Sounding Reference Signal (SRS). By adopting the embodiment of the invention, the SRS interference between the first cell and the adjacent cells with the same frequency can be reduced, and the uplink throughput and the downlink beamforming performance of each cell can be improved.

In a first aspect, an embodiment of the present invention provides an interference coordination method for a sounding reference signal SRS. Firstly, SRS spatial domain characteristics corresponding to a first cell are obtained. Here, the SRS spatial signature includes SRS signal strength on each beam in the first cell and/or SRS interference strength in each beam direction in the first cell. Then, according to the SRS signal strength on each beam in the first cell and/or the SRS interference strength in each beam direction in the first cell, performing SRS interference coordination before the first cell and N co-frequency neighboring cells corresponding to the first cell. Here, N is a positive integer greater than or equal to 1.

In the invention, after the first base station acquires the SRS signal strength in each beam direction in the first cell and/or the SRS interference strength in each beam direction in the first cell, SRS resource coordination can be carried out between the first cell and N co-frequency adjacent cells thereof or the optimization can be carried out on the channel estimation of UE in the first cell based on the SRS signal strength in each beam direction in the first cell and/or the SRS interference strength in each beam direction in the first cell, so that the SRS interference between the first cell and the N co-frequency adjacent cells thereof is reduced, the uplink throughput of the cell is improved, and the downlink beam shaping performance of the cell is also improved.

With reference to the first aspect, in a possible implementation manner, the SRS spatial signature includes SRS signal strengths in beam directions in the first cell. First SRS resource configuration information corresponding to the first cell may be obtained first. And then, determining the SRS signal strength in each beam direction in the first cell according to the first SRS resource configuration information. Here, the SRS signal strength on any beam i in the beams includes the SRS signal strength transmitted by one or more user equipments UE in the direction of the beam i.

With reference to the first aspect, in a possible implementation manner, UE distribution in each beam direction in the first cell is determined according to SRS signal strength in each beam direction in the first cell. And dividing the first cell into M target areas according to the UE distribution in each beam direction. Here, a difference between the numbers of UEs in each of the M target areas is smaller than a preset difference, and M is a positive integer greater than or equal to 2. Then, the SRS resources corresponding to the target regions are configured. Here, the SRS resource corresponding to any one of the M target regions k is different from the SRS resource corresponding to an interference region overlapping or adjacent to the target region k in any one of the N co-frequency neighboring regions j. And implementing SRS interference coordination between the first cell and N same-frequency adjacent cells of the first cell based on the SRS resources corresponding to the target regions. By carrying out region division on the first cell based on user distribution and carrying out SRS resource allocation on the M target regions on the premise of ensuring that the SRS resource corresponding to any one target region k in the M target regions is different from the SRS resource corresponding to the interference region in any one co-frequency adjacent region j in the N co-frequency adjacent regions, the SRS interference between the first cell and the N co-frequency adjacent regions can be reduced while the SRS resource utilization rate is improved.

With reference to the first aspect, in one possible implementation manner, the SRS spatial signature includes SRS interference strength in each beam direction in the first cell. N groups of second SRS configuration information corresponding to N same-frequency adjacent cells of the first cell can be obtained. Here, one co-frequency neighboring cell corresponds to one set of second SRS configuration information. The group of second SRS configuration information comprises SRS configuration information corresponding to at least one interference UE in an adjacent region with the same frequency. The interfering UE is a UE that satisfies at least one of the following: reporting A3 measurement event, locating at cell edge and locating on edge beam. Then, the SRS interference strength in each beam direction in the first cell is determined according to the N groups of second SRS configuration information. Here, the SRS interference strength on any beam i in each beam direction includes the SRS signal strength received in the beam i direction and transmitted by one or more interfering UEs in the N co-channel neighboring cells.

With reference to the first aspect, in a possible implementation manner, one or more strong-interference UEs corresponding to the first cell may be determined in N co-frequency neighboring cells of the first cell according to SRS interference strength in each beam direction. Then, sending SRS power resource reconfiguration signaling to the one or more strong interference UEs, and instructing the one or more strong interference UEs to reduce SRS transmission power based on the SRS power resource reconfiguration signaling to implement SRS interference coordination between the first cell and the N co-frequency neighboring cells of the first cell. One or more strong interference UEs of the first cell are determined according to the SRS interference strength in each beam direction, and then the same-frequency adjacent cells are instructed to reduce the SRS transmitting power of the strong interference UEs, so that the SRS generated by the same-frequency adjacent cells to the first cell can be simply and effectively reduced.

With reference to the first aspect, in a possible implementation manner, SRS signal quality information corresponding to each strong interference UE of the one or more strong interference UEs may be obtained. And determining one or more target interference UEs from the strong interference UEs according to the SRS signal quality information corresponding to the strong interference UEs. Here, the target interfering UE is a UE whose signal quality is equal to or greater than a preset signal quality threshold. And sending SRS power resource reconfiguration signaling to the one or more target UEs. By indicating the same-frequency adjacent cells to reduce the SRS transmitting power of target interference UE which causes serious interference to the first cell and has better signal quality, the signal quality of the UE in each same-frequency adjacent cell can be ensured while the SRS interference generated by the same-frequency adjacent cells to the first cell is reduced.

With reference to the first aspect, in one possible implementation manner, identification information of a first UE in a first cell may be acquired. And determining one or more main beams corresponding to the first UE from the beams in the first cell according to the identification information and the SRS signal strength in each beam direction in the first cell. And determining one or more non-serious interference beams corresponding to the first UE in the first cell from one or more non-main beams in the beams according to the SRS interference strength in the beam direction in the first cell. Here, the non-primary beams are beams other than the one or more primary beams in the beams, and the non-severe interference beams are beams with received interference strength smaller than a preset interference strength threshold in the one or more non-primary beams. And performing channel estimation on the first UE based on the SRS corresponding to the one or more main beams and the SRS corresponding to the one or more non-severe interference beams to obtain a channel estimation result corresponding to the first UE. And implementing SRS interference coordination between the first cell and N co-frequency adjacent cells of the first cell based on the channel estimation result corresponding to the first UE. Under the condition that SRS resources do not need to be reallocated to UE in a cell, the channel estimation process of the first UE is optimized in a mode of removing SRS interference received on a serious interference beam, so that the first base station can obtain a purer or interference-free SRS from the UE based on the optimized channel estimation result, further SRS interference between the first cell and N same-frequency adjacent regions is realized, and the throughput of the first cell is improved.

With reference to the first aspect, in a possible implementation manner, the identification information corresponding to the first UE in the first cell may be obtained. And determining one or more main beams corresponding to the first UE from the beams in the first cell according to the identification information and the SRS signal strength in the beam direction in the first cell. And determining one or more main interference beams corresponding to the first UE from the one or more main beams according to the identification information and the SRS interference strength in each beam direction in the first cell. Here, the main interference beam is a beam of the one or more main beams, which has received interference strength equal to or greater than a preset interference strength threshold. And removing part or all of SRS interference contained in the SRS received based on the one or more main interference beams to obtain a target SRS corresponding to the one or more main interference beams. And performing channel estimation on the first UE based on the target SRS corresponding to the one or more main interference beams and the SRS corresponding to the beams other than the one or more main interference beams, so as to obtain a channel estimation result corresponding to the first UE. And implementing SRS interference coordination between the first cell and N co-frequency adjacent cells of the first cell based on the channel estimation result corresponding to the first UE. Under the condition that SRS resources do not need to be reallocated to the UE in the cell, the channel estimation process of the first UE is optimized in a mode of removing the SRS interference received on the main wave beam, so that the first base station can obtain a purer or interference-free SRS from the UE based on the optimized channel estimation result, further the SRS interference between the first cell and N same-frequency adjacent regions is realized, and the throughput of the first cell is improved.

With reference to the first aspect, in a possible implementation manner, the total SRS interference strength corresponding to the first cell may be obtained first. And when the SRS interference total intensity corresponding to the first cell is determined to be larger than a preset total intensity threshold value, acquiring the SRS spatial characteristics corresponding to the first cell. And performing SRS interference coordination operation between the first cell and the N same-frequency adjacent regions only under the condition that the total interference intensity received by the first cell is equal to or greater than a preset total intensity threshold value, so that data processing resources corresponding to each cell can be saved, and the measurement energy consumption is reduced.

In a second aspect, an embodiment of the present invention provides an interference coordination apparatus for sounding reference signals SRS. The apparatus includes means for performing the interference coordination method for sounding reference signals provided in any one of the possible implementations of the first aspect, and thus can also achieve the beneficial effects (or advantages) of the interference coordination method provided in the first aspect.

In a third aspect, an embodiment of the present invention provides an electronic device, which includes a processor, a memory, and a transceiver, where the processor, the memory, and the memory are connected to each other, where the memory is used to store a computer program, and the computer program includes program instructions, and the processor and the transceiver are configured to invoke the program instructions to execute the interference coordination method for a sounding reference signal SRS provided in the first aspect, so as to also achieve the beneficial effects of the interference coordination method for a sounding reference signal SRS provided in the first aspect.

In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the instructions are executed on a computer, the instructions cause the computer to perform the method for interference coordination of a sounding reference signal SRS provided in any one of the possible implementation manners of the first aspect, and also can achieve beneficial effects of the method for interference coordination of a sounding reference signal SRS provided in the first aspect.

In a fifth aspect, an embodiment of the present invention provides a chip, where the chip includes a transceiver coupled to a terminal device, and is configured to execute the technical solution provided in the first aspect of the embodiment of the present invention.

In a sixth aspect, an embodiment of the present invention provides a chip system, where the chip system includes a processor, configured to support a terminal device to implement the functions referred to in the foregoing first aspect, for example, to generate or process information referred to in the interference coordination method for sounding reference signals SRS provided in the foregoing first aspect. In one possible design, the above chip system further includes a memory for storing program instructions and data necessary for the terminal. The chip system may be formed by a chip, and may also include a chip and other discrete devices.

In a seventh aspect, an embodiment of the present invention provides a computer program product including instructions, which when run on a computer, causes the computer to execute the method for interference coordination of a sounding reference signal SRS provided in the first aspect, and can also achieve the beneficial effects of the method for interference coordination of a sounding reference signal SRS provided in the first aspect.

By implementing the embodiment of the invention, the SRS interference between the first cell and the adjacent cells with the same frequency can be reduced, and the uplink throughput and the downlink beamforming performance of each cell can be improved.

Drawings

Fig. 1 is a schematic structural diagram of a communication system according to an embodiment of the present invention;

fig. 2 is a flowchart illustrating an interference coordination method for a sounding reference signal SRS according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a first implementation scenario provided by the embodiment of the present invention;

fig. 4 is a schematic diagram of a second implementation scenario provided by the embodiment of the present invention;

fig. 5 is a schematic structural diagram of an interference coordination apparatus for sounding reference signals SRS according to an embodiment of the present invention;

fig. 6 is another structural schematic diagram of an interference coordination apparatus for sounding reference signals SRS according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

The interference coordination method for sounding reference signal SRS provided in the embodiment of the present invention is suitable for Long Term Evolution (LTE) systems or 5G systems that support establishing Dual Connectivity (DC) with 5G systems (also referred to as new radio NR systems), and is also suitable for other wireless communication systems that employ various radio access technologies, such as single carrier communication systems that employ Code Division Multiple Access (CDMA), Frequency Division Multiple Access (FDMA), time division multiple access (time division multiple access, TDMA), Orthogonal Frequency Division Multiple Access (OFDMA), single carrier-frequency division multiple access (MIMO-FDMA), multiple input multiple output (multiple output, multiple output (multiple input, multiple output), etc., and systems that do not limit future communications.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a communication system according to an embodiment of the present invention. The communication system is realized based on a large-scale antenna technology. As shown in fig. 1, in an LTE system or an NR system, an array antenna of a network device based on multiple-input multiple-output (MIMO) technology may form beams (e.g., beam 1, beam 2, or beam 3 in fig. 1) with different transmission directions, so as to cover a current cell (e.g., a first cell in fig. 1) of the network device. And the user equipment (such as user equipment U1, user equipment U2, or user equipment U3) in the current cell may also establish a connection with the network equipment through each beam in the cell, thereby implementing transmission of data or signaling with the network equipment, including uplink transmission and downlink transmission. The network device according to the embodiment of the present invention is a device deployed in a Radio Access Network (RAN) to provide a wireless communication function for a user equipment. The network device may be a macro base station, a micro base station, a relay station, an access point base station controller, a Transmission Reception Point (TRP), etc., in various forms, and may also be a control device that is composed of one or more base stations and a controller that establishes a communication connection therewith, which is not limited herein. For convenience of description, in the following description of the embodiment of the present invention, the network device is described by taking a base station as an example. The User Equipment (UE) to which the present invention relates may be a wireless device providing voice and/or data connectivity to a user. The wireless device may be a handheld device having wireless connectivity capabilities, or other processing device connected to a wireless modem, a mobile terminal communicating with one or more core networks via a radio access network. For example, the wireless terminal may be a mobile phone, a computer, a tablet computer, a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), a wearable device, an electronic book reader (e-book reader), and the like. As another example, the wireless device may be a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device. For another example, the wireless device may be a mobile station (mobile station) or an access point (access point).

The technical problem to be solved by the method provided by the embodiment of the present invention is based on the system structure shown in fig. 1, and how to reduce SRS noise interference between cells by coordinating SRS resources between cells and optimizing channel estimation of a user equipment in a process that a network device receives an SRS transmitted by the user equipment, so as to improve uplink throughput or downlink beamforming performance of each cell.

Example one

Referring to fig. 2, fig. 2 is a flowchart illustrating an interference coordination method for sounding reference signals SRS according to an embodiment of the present invention. In the embodiment of the present invention, a base station is described as an execution subject. The SRS resource related in the embodiment of the present invention may specifically include at least one of an SRS time domain resource, an SRS frequency domain resource, an SRS comb domain resource, an SRS power domain resource, or an SRS code domain resource. The first cell and the N co-frequency neighboring cells thereof related in this embodiment may belong to the same base station, or may not belong to the same base station, which is not limited herein. In this embodiment, a specific implementation scenario is that the first cell and the N co-frequency neighboring cells thereof do not belong to the same base station. The interference coordination method of the SRS comprises the following steps:

s101, obtaining SRS spatial characteristics corresponding to the first cell.

In some possible embodiments, a base station corresponding to the first cell (for convenience of understanding, the description below is replaced with the first base station) may acquire the SRS spatial signature corresponding to the first cell. Here, the SRS spatial signature corresponding to the first cell may include SRS signal strength in each beam direction in the first cell, and/or SRS interference strength in each beam direction in the first cell. It should be noted that the SRS signal strength in any one of the beam directions may specifically include the SRS signal strength received by the first base station in any one of the beam directions and transmitted by one or more UEs (where the one or more UEs are UEs in the first cell). The SRS interference strength in any one of the beam directions may specifically include SRS signal strength received by the first base station in any one of the beam directions and transmitted by one or more interfering UEs. Here, the one or more interfering UEs are UEs that exist in N co-frequency neighboring cells of the first cell and generate SRS interference to the first cell.

Optionally, in a case that the SRS spatial domain feature includes SRS signal strength in each beam direction in the first cell, in a specific implementation, the first base station may extract first SRS resource configuration information configured for the first cell. Here, the first SRS resource allocation information includes SRS resource allocation information corresponding to one or more UEs in the first cell. Then, the first base station may analyze the first SRS resource configuration information to obtain SRS resources corresponding to one or more UEs in the first cell. Thereafter, the first base station may measure the SRS signal strength transmitted by each UE based on the SRS resource corresponding to each UE of the one or more UEs. The SRS signal strength may be, but is not limited to, Reference Signal Received Power (RSRP). For example, assume that the beam a is a beam corresponding to the first cell, and assume that three user equipments, namely, the user equipment UE1, the user equipment UE2 and the user equipment UE3, exist in the first cell. Here, taking UE1 as an example, after acquiring the first SRS resource allocation information, the first base station may transmit SRS resource, specifically time t, frequency f, and comb1, based on UE1 analyzed by the first SRS resource allocation information. Then, when the time t arrives, the first base station may search for the SRS sequence transmitted by the UE1 on the frequency f of the comb1 based on the beam a, and then calculate the signal strength of the SRS transmitted by the UE1 according to the SRS sequence transmitted by the UE 1. Then, the first base station may perform the same operations as described above for the UE2 and the UE3 to obtain the SRS signal strengths transmitted by the UE2 and the UE3, and finally determine the SRS signal strength received in the beam a direction and transmitted by the UE1, the SRS signal strength transmitted by the UE2, and the SRS signal strength transmitted by the UE3 as the SRS signal strength in the beam a direction. Similarly, the first base station repeats the above operations in other beam directions except for the beam a direction in the first cell, and the SRS signal strength in each beam direction in the first cell can be obtained.

Optionally, in a case that the SRS spatial characteristics include SRS interference strength in each beam direction in the first cell, in a specific implementation, the first base station may obtain a set of SRS resource configuration information corresponding to each co-frequency neighboring cell in the N co-frequency neighboring cells of the first cell (for convenience of understanding, the description is replaced with the second SRS resource configuration information hereinafter). Here, it should be noted that the set of second SRS resource configuration information includes SRS resource configuration information corresponding to at least one interfering UE in an intra-frequency neighboring cell. The interference UE is UE which meets preset conditions in each same-frequency adjacent cell, and the preset conditions at least comprise any one of the following conditions: reporting A3 measurement event, cell edge of same frequency adjacent cell, edge wave beam of same frequency adjacent cell. Optionally, specifically, the first base station may send a resource configuration information acquisition signaling to a base station corresponding to each co-frequency neighboring cell in the N co-frequency neighboring cells of the first cell, so as to instruct the base station corresponding to each co-frequency neighboring cell to screen out one or more interfering UEs in each co-frequency neighboring cell, and send SRS resource configuration information corresponding to each interfering UE to the first base station. Then, the first base station may receive SRS resource configuration information sent by the base station corresponding to each co-frequency neighboring cell, so as to obtain the second SRS resource configuration information. Optionally, the first base station may also directly extract, from a storage module inside the first base station, SRS resource configuration information corresponding to the interfering UE periodically fed back by the base station corresponding to each co-frequency neighboring cell. Here, it should be noted that, at this time, in the first cell and the N co-frequency neighbors, it has been agreed in advance that SRS resource configuration information corresponding to interfering UEs in each cell can be periodically exchanged between each cell.

After obtaining the second SRS resource configuration information, the first base station may analyze the second SRS resource configuration information to obtain SRS resources corresponding to one or more interfering UEs in each co-frequency neighboring cell, such as time resources, frequency resources, code domain resources, and the like for interfering UEs to transmit SRS. Then, the first base station may measure, in each beam direction in the first cell, the signal strength of the SRS transmitted by the interfering UE based on the SRS resources corresponding to one or more interfering UEs in each co-frequency neighboring cell, so as to obtain the SRS interference strength received in each beam direction in the first cell. Here, it can be understood that, from the perspective of the first base station, the SRS signal strength corresponding to the interfering UE measured by the first base station is the SRS interference strength received by the first cell. In the following, any beam i among the beams is taken as an example. And the first base station determines one or more interfering UEs associated with the beam i (namely the interfering UEs in the direction of the beam i) from the one or more interfering UEs according to the connection relationship established between the first base station and the one or more interfering UEs. Then, the first base station may determine resource configuration information corresponding to one or more interfering UEs in the beam i direction from the second SRS resource configuration information, and then measure, based on the resource configuration information corresponding to one or more interfering UEs in the beam i direction, SRS signal strength received in the beam i direction and transmitted by the one or more interfering UEs, that is, SRS interference strength in the beam i direction. Similarly, the first base station repeats the above operations on the beams except for the beam i, so as to obtain the SRS interference strength in each beam direction in the first cell.

In some possible embodiments, before acquiring the spatial domain characteristic corresponding to the first cell, the first base station may acquire the total SRS interference strength corresponding to the first cell. Then, the first base station may determine whether the SRS interference total strength corresponding to the first cell is equal to or greater than a preset total interference strength threshold. Here, the preset total interference strength threshold may be determined by empirical values obtained through a plurality of interference coordination experiments. When the first base station determines that the SRS interference strength corresponding to the first cell is equal to or greater than the total interference strength threshold, the first base station may continue to perform the step of obtaining the spatial domain characteristic corresponding to the first cell. When the first base station determines that the total SRS interference strength corresponding to the first cell is smaller than the preset total interference strength threshold, the first base station may obtain the total SRS interference strength corresponding to the first cell again, and determine whether the total SRS interference strength corresponding to the first cell is equal to or greater than the preset total interference strength threshold. And performing SRS interference coordination operation between the first cell and the N same-frequency adjacent regions only under the condition that the total interference intensity received by the first cell is equal to or greater than a preset total interference intensity threshold value, so that data processing resources corresponding to each cell can be saved, and the measurement energy consumption of the cells is reduced.

S102, according to the SRS signal intensity in each wave beam direction in the first cell and/or the SRS interference intensity in each wave beam direction in the first cell, carrying out SRS interference coordination between the first cell and N same-frequency adjacent cells of the first cell.

In some feasible embodiments, after obtaining the SRS signal strength in each beam direction in the first cell, and/or the SRS interference strength in each beam direction in the first cell, the first base station may reconfigure SRS resources to the first cell or the N co-frequency neighboring cells according to the SRS signal strength in each beam direction in the first cell or the SRS interference strength in each beam direction in the first cell, or may perform interference suppression and cancellation on a channel estimation process of the UE in the first cell according to the SRS signal strength in each beam direction in the first cell and the SRS interference strength in each beam direction in the first cell, so as to implement SRS interference coordination between the first cell and the N co-frequency neighboring cells of the first cell.

Optionally, in a specific implementation, after obtaining the SRS signal strength in each beam direction in the first cell, the first base station may determine the UE distribution in each beam direction based on the SRS signal strength in each beam direction. Here, the UE distribution in each beam direction may be specifically the number of users in each beam direction. It should be noted that, the first base station may determine that a UE is a UE in any beam direction, based on that the SRS signal strength received by any beam of the beams and transmitted by the UE is the strongest. For example, assuming that the SRS signal strengths received by the first base station based on the beam 1, beam 2, and beam 3 directions and transmitted by the user equipment UE1 are S1, S2, and S3, respectively, and S3 is a maximum value, the first base station may determine that the user equipment UE1 is a UE in the beam 3 direction. Similarly, the first base station may determine the number of users in each beam direction by repeating the above operations. After determining the UE distribution in each beam direction, the first base station may divide the first cell into M target areas based on the UE distribution in each beam direction and a preset area division condition. Here, the preset area division condition is specifically that a difference between the numbers of UEs in each of the M target areas is smaller than a preset difference, and M is a positive integer greater than or equal to 2. Specifically, the first base station may determine M-1 demarcation beams from each beam based on the UE distribution on each beam and the area division condition, and then divide the first cell into M target areas based on the M-1 demarcation beams. The area division condition can enable the number of the users in the target area to be in a balanced state, so that the SRS resources which can be used by each user equipment in each target area can be ensured to be relatively balanced, the resource competition among the user equipment can be reduced, and the utilization rate of the SRS resources can be improved. Then, the first base station can acquire unused SRS resources corresponding to the first cell and SRS resources corresponding to an interference region in any one of the N co-frequency neighboring cells j, and perform SRS resource configuration on the M target regions according to the unused SRS resources corresponding to the first cell and the SRS resources corresponding to the interference region in any one of the N co-frequency neighboring cells j on the premise that preset resource configuration conditions are met. Here, the interference region in the same-frequency neighboring region j is a region overlapping or adjacent to any target region k in the M target regions in the same-frequency neighboring region j, and the preset resource configuration condition is that SRS resources corresponding to any target region k in the M target regions are different from SRS resources corresponding to interference regions in the N same-frequency neighboring regions j. Referring to fig. 3, fig. 3 is a schematic diagram of a first implementation scenario provided in the embodiment of the present invention. Fig. 3 shows a first cell and a first co-frequency neighboring cell of one or more co-frequency neighboring cells thereof. The first cell is formed by beam 1, beam 2, beam 3 and beam 4 coverage. In the following, taking the example that the first base station divides the first cell into 2 target areas and configures Comb resources for the first cell, assume that the Comb resources not used by the first cell are [ Comb1, Comb2, Comb3, Comb4 ]. The first base station determines, from the UE distribution on each beam in the first cell, that the number of users in the beam 1 direction is 7, the number of users in the beam 2 direction is 2, the number of users in the beam 3 direction is 4, and the number of users in the beam 4 direction is 4. The first base station can determine that the boundary beam is the beam 2 by analyzing the number of users in each beam direction. Thus, the number of users in the divided target area 1 is 9, the number of users in the target area 2 is 8, and the number of users in the two target areas is relatively balanced. Then, the first base station may acquire Comb resources corresponding to interference region 1 of target region 1 in the first on-frequency neighboring cell, which is assumed to be Comb 4. The first base station may prioritize any one or more of Comb1, Comb2, and Comb3 resources to target area 1. Therefore, the Comb resources corresponding to the target area 1 and the Comb resources corresponding to the interference area 1 are different, and the SRS interference generated by the interference area 1 on the first cell can be reduced. The first base station divides a first cell based on UE distribution, performs SRS resource allocation on M target areas on the premise of ensuring that SRS resources corresponding to any one target area k in the M target areas are different from SRS resources corresponding to interference areas in any one co-frequency adjacent area j in the N co-frequency adjacent areas, and reduces SRS interference between the first cell and the N co-frequency adjacent areas while improving the SRS resource utilization rate.

Optionally, when SRS resource allocation is performed on M target areas, the first base station may also allocate the same SRS resource to two or more target areas that are farther away from the M target areas on the premise that unused SRS resources corresponding to the first cell are insufficient, so that SRS resources can be fully utilized while interference between the target areas is ensured to be smaller. Optionally, when the first base station allocates SRS resources to the M target areas, network load conditions corresponding to each target area and service use conditions of the user equipment in each target area may also be considered comprehensively, so as to further improve rationality and reliability of SRS resource allocation. Optionally, when SRS resources are allocated to UEs in the M target areas, different SRS resources may also be allocated to near point UEs and far point UEs in each target area.

Optionally, after obtaining the SRS interference strength in the direction of each beam, the first base station may determine one or more strong-interference UEs from the N co-frequency neighboring cells according to the SRS interference strength in the direction of each beam. Specifically, the first base station may determine, according to the SRS interference strength in the direction of each beam, the SRS interference strength of a certain UE (assumed to be UE1) in the N co-frequency neighboring cells, and then when the first base station determines that the SRS interference strength of the UE1 is equal to or greater than a preset UE interference strength threshold, it may be determined that the UE1 is a strong-interference UE corresponding to the first cell. And the first base station can screen one or more strong interference UEs corresponding to the first cell from the N same-frequency adjacent cells by repeating the operation. Optionally, before screening the interfering UE, the first base station may first screen one or more strong-interference neighboring cells corresponding to the first cell from the N co-frequency neighboring cells according to the SRS interference strength in each beam direction. The process of the first base station screening the strong interference neighbor cell is described below by taking any one of the N same-frequency neighbor cells j as an example. The first base station may determine SRS interference strength corresponding to one or more interfering UEs in the same-frequency neighboring cell j according to the SRS interference strength in each beam direction, and then determine neighboring cell SRS interference strength corresponding to the same-frequency neighboring cell j according to the SRS interference strength corresponding to the one or more interfering UEs. Then, the first base station may determine whether the SRS interference strength of the neighboring cell corresponding to the same-frequency neighboring cell j is equal to or greater than a preset neighboring cell interference strength threshold. And if the first base station determines that the SRS interference strength of the adjacent cell corresponding to the same-frequency adjacent cell j is equal to or greater than the adjacent cell interference strength threshold, determining that the same-frequency adjacent cell j is a strong-interference adjacent cell corresponding to the first cell. Similarly, the first base station can screen out one or more strong interference neighbor cells corresponding to the first cell from the N same-frequency neighbor cells by repeating the operation. Then, the first base station may determine, according to the SRS interference strength in each beam direction, SRS interference strength corresponding to one or more UEs in each strong interference neighboring cell of the one or more strong interference neighboring cells, and then screen out, according to the UE interference strength threshold, one or more strong interference UEs corresponding to the first cell from the one or more UEs in each strong interference neighboring cell. For a specific process, reference may be made to the above process for determining one or more strong interference UEs from the N co-frequency neighboring cells, which is not described herein again. Here, it should be noted that the screening operation of the strong interference UE may be independently completed by the first base station, or may be assisted by the base stations corresponding to the one or more neighboring cells with the same frequency according to the strong interference UE screening signaling sent by the first base station, which is not limited herein.

Optionally, after determining one or more strong interference UEs corresponding to the first cell, the first base station may send an SRS power resource reconfiguration instruction to the one or more strong interference UEs to instruct the one or more strong interference UEs to reduce SRS transmission power thereof. Specifically, the first base station may send an SRS power resource reconfiguration signaling to the base station of the co-frequency neighboring cell where each strong interference UE in the one or more strong interference UEs is located, and instruct the base station of each co-frequency neighboring cell to reconfigure SRS power resources for the strong interference UE in each co-frequency neighboring cell, so as to reduce SRS transmission power corresponding to the strong interference UE in each co-frequency neighboring cell. The first base station reduces the SRS signal transmission intensity of the strong interference UE by indicating the same-frequency adjacent cell so as to reduce the SRS interference caused to the first cell. Optionally, after determining one or more strong interference UEs corresponding to the first cell, the first base station may first send a target interference UE screening instruction to the base station of the co-frequency neighboring cell where each strong interference UE is located, so as to instruct the base station of each co-frequency neighboring cell to screen one or more target interference UEs whose signal quality is equal to or greater than a preset signal quality threshold from each strong interference UE. Then, the first base station may send an SRS power resource reconfiguration instruction to the base station corresponding to each co-frequency neighboring cell to instruct the one or more target interfering UEs to reduce their SRS transmission power. Here, the first base station may reduce, by indicating the intra-frequency neighboring cell, SRS transmit power of a target interfering UE that causes severe interference to the first cell and has a good signal quality of itself, and may ensure signal quality of UEs in each intra-frequency neighboring cell while reducing SRS interference generated by the intra-frequency neighboring cell to the first cell.

Next, please refer to fig. 4, and fig. 4 is a schematic diagram of a second implementation scenario provided in the embodiment of the present invention. Fig. 4 shows a first cell and a second co-frequency neighbor of the first cell. Here, it is assumed that the user equipment U1 is a user equipment in a first cell, and the user equipment U2 and the user equipment U3 are user equipments in a second co-frequency neighboring cell. The first cell corresponds to a first base station, and the second same-frequency adjacent cell corresponds to a second base station. And the first base station determines that the second co-frequency adjacent cell is a strong interference adjacent cell of the first cell according to the SRS interference strength in each beam direction, and determines that the user equipment U2 and the user equipment U3 are strong interference UE corresponding to the first cell according to the SRS interference strength in each beam direction. The first base station may send a target interference UE screening instruction to the second base station, and the second base station obtains the signal quality corresponding to the user equipment U2 and the signal quality corresponding to the user equipment U3 according to the target interference UE screening instruction. Thereafter, the second base station may determine whether the signal quality corresponding to the UE U2 and the signal quality corresponding to the UE U3 are equal to or greater than a preset signal quality threshold, and determine the UE with the signal quality equal to or greater than the preset signal quality threshold as the target interfering UE. Here, it is assumed that the first base station determines that the user equipment 2 is the target interfering UE. Then, the first base station may send an SRS power resource reconfiguration instruction to the second base station to instruct the second base station to reselect and configure the SRS power resource for the user equipment, so as to reduce the SRS transmission power of the user equipment 2.

Optionally, after obtaining the SRS signal strength in each beam direction and the SRS interference strength in each beam direction, the first base station performs SRS interference suppression or cancellation according to the SRS signal strength in each beam direction and the SRS interference strength in each beam direction when performing channel estimation on one or more UEs in the first cell. In the following, taking the first UE in the first cell as an example, the first UE referred to herein may refer to any UE that establishes a communication connection with the first base station of the first cell.

In a first possible implementation manner, the first base station may acquire identification information corresponding to the first UE (for convenience of understanding, the description is replaced with the first identification information below), and then determine one or more primary beams corresponding to the first UE from beams in the first cell according to the first identification information and SRS signal strengths in the beam directions. Specifically, the first base station may determine, according to the first identification information and the SRS signal strength in each beam direction, the SRS signal strength received in each beam direction and transmitted by the first UE. Then, the first base station may determine whether the SRS signal strength transmitted by the first UE received in each beam direction is equal to or greater than a preset user SRS strength threshold, and determine a beam having the received SRS signal strength transmitted by the first UE that is equal to or greater than the user SRS strength threshold as a primary beam corresponding to the first UE. The first base station may further determine one or more non-severe interference beams corresponding to the first UE from the one or more non-primary beams of the first cell according to the SRS interference strength in each beam direction. Here, the non-primary beam is a beam other than the one or more primary beams among the beams in the first cell. Specifically, the first base station may determine the SRS interference strength in each non-primary beam direction according to the SRS interference strength in each beam direction. Thereafter, the first base station may determine the non-primary beam with the received SRS interference strength smaller than the preset interference strength threshold as the non-severe interference beam corresponding to the first UE. Finally, the first base station may perform signal estimation on the first UE based on the SRS received on the one or more main beams and the SRS received on the one or more non-severe interference beams, so as to obtain a channel estimation result corresponding to the first UE. And the subsequent first base station can receive the SRS with less interference from the first UE based on the signal estimation result, so that the SRS interference coordination of the first cell and the N same-frequency adjacent intervals is realized.

In a second possible implementation manner, after acquiring the first identification information corresponding to the first UE, the first base station may determine, according to the first identification information and the SRS signal strengths in the beam directions, one or more main beams corresponding to the first UE from the beams in the first cell. For a specific process, refer to the process of determining one or more main beams corresponding to the first UE according to the above-described first possible implementation manner, which is not described herein again. Then, the first base station may determine a main interference beam corresponding to the first UE from the one or more main beams according to the SRS interference strength in each beam direction. Specifically, the first base station may determine, based on the SRS interference strength in each beam direction, the SRS interference strength received on each of the one or more primary beams, and determine, as the primary interference beam corresponding to the first UE, the primary beam whose received SRS interference strength is equal to or greater than the preset interference strength threshold. The first base station may remove some or all of the SRS interference contained in the SRS that it receives based on the one or more dominant interfering beams. Take any one of the one or more dominant interference beams t as an example. The first base station can estimate and reconstruct part or all of SRS interference received on the main interference beam t and generated by interfering UEs in adjacent cells with same frequency interference, and then remove the part or all of SRS interference from the SRS received by the main interference beam t to obtain a target SRS corresponding to the main beam. The first base station repeats the above operations to obtain the SRS corresponding to each main interference beam. Finally, the first base station may perform channel estimation on the first UE based on the target SRS corresponding to each dominant interference beam and the SRS corresponding to beams in each beam in the first cell except for each dominant interference beam, so as to obtain a channel estimation result corresponding to the first UE. And the subsequent first base station can receive the SRS with less interference from the first UE based on the signal estimation result, thereby realizing the interference coordination between the first cell and the N same-frequency adjacent intervals.

According to the two implementation modes, under the condition that SRS resources do not need to be reallocated to the UE in the cell, the SRS interference contained in the SRS used for channel estimation can be inhibited or eliminated in the process of carrying out channel estimation on the UE, so that the channel estimation process of the UE is optimized, the first base station can obtain a purer or non-interference SRS from the UE based on the optimized channel estimation result, the SRS interference between the first cell and N same-frequency adjacent regions is realized, and the throughput of the first cell is improved.

For example, please refer to fig. 4 together. The user equipment U2 is an interfering UE of the user equipment U1 in a second intra-frequency neighboring cell. In a first possible implementation manner, when the first base station performs channel estimation on the user equipment U1, it may first determine, based on the identification information corresponding to the user equipment U1 and SRS signal strengths in each beam direction, that the beam 1 is a primary beam of the user equipment U1, and that the

beams

2 and 3 are non-primary beams of the first UE. The first base station may then determine the total SRS interference strength received in the beam 2 and beam 3 directions based on the SRS interference strength in each beam direction. If the SRS total interference strength received by the beam 2 is smaller than the preset interference strength threshold and the SRS total interference strength received by the beam 3 is equal to or larger than the preset interference strength threshold, the first base station may determine that the beam 2 is a non-severe interference beam corresponding to the user equipment U1. Thereafter, the first base station may perform channel estimation on the user equipment U1 based on the SRS received on beam 1 and the SRS received on beam 2 to obtain a channel estimation result corresponding to the user equipment U1. Further, the first base station may demodulate a signal transmitted by the user equipment U1 based on a signal estimation result corresponding to the user equipment U1 to obtain a purer SRS signal, thereby implementing the SRS interference coordination between the first cell and the N co-frequency neighbors. In a second possible implementation manner, the first base station determines, based on the identification information corresponding to the user equipment U1 and SRS signal strengths in the beam directions, that the beam 1 is a main beam of the user equipment U1, and then the first base station estimates and reconstructs SRS interference received in the beam 1 direction (e.g., SRS interference transmitted by the user equipment U2), and removes the SRS interference from the SRS received in the beam 1 direction, so as to obtain the SRS corresponding to the beam 1. Finally, the first base station performs channel estimation on the user equipment U1 based on the target SRS corresponding to the beam 1 and the SRS corresponding to the beams other than the beam 1 in each beam, so as to further reduce the SRS interference between the first cell and its intra-frequency neighbors based on the channel estimation result.

Example two

Referring to fig. 5, fig. 5 is a schematic structural diagram of an interference coordination apparatus for sounding reference signals SRS according to an embodiment of the present invention. The interference coordination device for the Sounding Reference Signal (SRS) comprises:

an obtaining unit 10 is configured to obtain an SRS spatial domain feature corresponding to the first cell. Here, the SRS spatial signature includes SRS signal strength in each beam direction in the first cell and/or SRS interference strength in each beam direction in the first cell.

An interference coordination unit 20, configured to perform SRS interference coordination between the first cell and N co-frequency neighboring cells of the first cell according to the SRS signal strength in each beam direction in the first cell acquired by the acquisition unit 10 and/or the SRS interference strength in each beam direction in the first cell. Here, N is a positive integer greater than or equal to 1.

In some possible embodiments, the SRS spatial signature includes SRS signal strength in each beam direction in the first cell. The above-mentioned acquisition unit 10 is configured to:

and acquiring first SRS resource configuration information corresponding to the first cell. And determining the SRS signal strength in each beam direction in the first cell according to the first SRS resource configuration information. Here, the SRS signal strength on any one of the beams i includes the SRS signal strength transmitted by one or more terminal equipments UE in the direction of the beam i.

In some possible embodiments, the interference coordination unit 20 is configured to:

and determining UE distribution in each beam direction in the first cell according to the SRS signal strength in each beam direction in the first cell obtained by the obtaining unit 10. The first cell is divided into M target areas according to the UE distribution in each beam direction. Here, a difference between the numbers of UEs in each of the M target areas is smaller than a preset difference, and M is a positive integer greater than or equal to 2. And configuring the SRS resources corresponding to the target areas. Here, the SRS resource corresponding to any one of the M target regions k is different from the SRS resource corresponding to an interference region overlapping or adjacent to the target region k in any one of the N co-frequency neighboring regions j. And implementing SRS interference coordination between the first cell and N same-frequency adjacent cells of the first cell based on the SRS resources corresponding to the target regions.

In some possible embodiments, the SRS spatial signature includes SRS interference strength in each beam direction in the first cell. The above-mentioned acquisition unit 10 is configured to:

and acquiring N groups of second SRS configuration information corresponding to N same-frequency adjacent cells of the first cell. Here, one co-frequency neighboring cell corresponds to one set of second SRS configuration information. The group of second SRS configuration information comprises SRS configuration information corresponding to at least one interference UE in an adjacent region with the same frequency. The interfering UE is a UE that satisfies at least one of the following: reporting A3 measurement event, locating at cell edge and locating on edge beam. And determining the SRS interference strength in each beam direction in the first cell according to the N groups of second SRS configuration information. Here, the SRS interference strength on any beam i in each beam direction includes the SRS signal strength received in the beam i direction and transmitted by one or more interfering UEs in the N co-channel neighboring cells.

and determining one or more strong interference UEs corresponding to the first cell in N co-frequency neighboring cells of the first cell according to the SRS interference strength in each beam direction obtained by the obtaining unit 10. Sending SRS power resource reconfiguration signaling to the one or more strong interference UEs, and instructing the one or more strong interference UEs to reduce SRS transmission power based on the SRS power resource reconfiguration signaling so as to realize SRS interference coordination between the first cell and N same-frequency neighboring cells of the first cell.

In some possible embodiments, the interference coordination unit 20 is further configured to:

and obtaining SRS signal quality information corresponding to each strong interference UE in the one or more strong interference UEs. And determining one or more target interference UEs from the strong interference UEs according to the SRS signal quality information corresponding to the strong interference UEs, wherein the target interference UEs are UEs with signal quality equal to or greater than a preset signal quality threshold. And sending SRS power resource reconfiguration signaling to the one or more target UEs.

In some possible embodiments, there is at least one first UE in the first cell. The interference coordination unit 20 is configured to:

and acquiring the identification information of the first UE. And determining one or more main beams corresponding to the first UE from the beams in the first cell according to the identification information and the SRS signal strength in each beam direction in the first cell. According to the SRS interference strength in each beam direction in the first cell obtained by the obtaining unit 10, one or more non-severe interference beams corresponding to the first UE are determined from one or more non-primary beams in each beam. Here, the non-primary beams are beams other than the one or more primary beams in the beams, and the non-severe interference beams are beams with received interference strength smaller than a preset interference strength threshold in the one or more non-primary beams. And performing channel estimation on the first UE based on the SRS corresponding to the one or more main beams and the SRS corresponding to the one or more non-severe interference beams to obtain a channel estimation result corresponding to the first UE. And implementing SRS interference coordination between the first cell and N co-frequency adjacent cells of the first cell based on the channel estimation result corresponding to the first UE.

In some possible embodiments, there is at least one first UE in the first cell, and the interference coordination unit 20 is configured to:

and acquiring the identification information corresponding to the first UE. And determining one or more primary beams corresponding to the first UE from the beams in the first cell according to the identification information and the SRS signal strength in the beam direction in the first cell obtained by the obtaining unit. And determining one or more main interference beams corresponding to the first UE from the one or more main beams according to the SRS interference strength in each beam direction in the first cell obtained by the obtaining unit. Here, the main interference beam is a beam of the one or more main beams, which has received interference strength equal to or greater than a preset interference strength threshold. And removing part or all of SRS interference contained in the SRS received based on the one or more main interference beams to obtain a target SRS corresponding to the one or more main interference beams. And performing channel estimation on the first UE based on the target SRS corresponding to the one or more main interference beams and the SRS corresponding to the beams other than the one or more main interference beams, so as to obtain a channel estimation result corresponding to the first UE. And implementing SRS interference coordination between the first cell and N co-frequency adjacent cells of the first cell based on the channel estimation result corresponding to the first UE.

In some possible embodiments, please refer to fig. 6 together, and fig. 6 is a schematic structural diagram of another interference coordination apparatus for sounding reference signals SRS according to an embodiment of the present invention. The device further comprises a triggering unit 30. The trigger unit 30 is configured to: and acquiring the total SRS interference strength corresponding to the first cell. If the total SRS interference strength corresponding to the first cell is greater than the preset total strength threshold, the obtaining unit 10 is triggered to perform the step of obtaining the SRS spatial domain feature corresponding to the first cell.

In some possible embodiments, the obtaining unit 10 may obtain the SRS spatial signature corresponding to the first cell. The SRS spatial signature may include SRS signal strength in each beam direction in the first cell and/or SRS interference strength in each beam direction in the first cell. The process of acquiring the SRS spatial feature corresponding to the first cell by the acquiring unit 10 may refer to the process of acquiring the SRS spatial feature corresponding to the first cell described in step S101 in the first embodiment. After the obtaining unit 10 obtains the SRS signal strength in each beam direction in the first cell, and/or the SRS interference strength in each beam direction in the first cell, the interference coordination unit may coordinate SRS interference between the first cell and N co-frequency neighboring cells of the first cell based on the SRS signal strength in each beam direction in the first cell, and/or the SRS interference strength in each beam direction in the first cell, and the specific process may refer to the process of interference coordination described in step S102 in the first embodiment, which is not described herein again.

Optionally, before the obtaining unit 10 obtains the SRS spatial domain feature corresponding to the first cell, the triggering unit may obtain the total SRS interference strength corresponding to the first cell, and trigger the obtaining unit 10 to obtain the SRS spatial domain feature corresponding to the first cell when the total SRS interference strength corresponding to the first cell is greater than a preset total strength threshold.

In the embodiment of the present invention, after the obtaining unit 10 obtains the SRS signal strength in each beam direction in the first cell, and/or the SRS interference strength in each beam direction in the first cell, the interference coordination unit 20 may perform SRS resource coordination between the first cell and its N co-frequency neighboring cells or optimize the channel estimation of the UE in the first cell based on the SRS signal strength in each beam direction in the first cell and/or the SRS interference strength in each beam direction in the first cell, so as to reduce the SRS interference between the first cell and its N co-frequency neighboring cells, improve the uplink throughput of the cell, and also improve the downlink beamforming performance of the cell.

Referring to fig. 7, fig. 7 is a structural diagram of an electronic device according to an embodiment of the invention. The electronic device includes:

the processor 701, the memory 702, and the transceiver 703 may be connected via a bus system 704, and optionally, the processor 701, the memory 702, and the transceiver 703 may be connected.

The memory 701 includes, but is not limited to, RAM, ROM, EPROM, or CD-ROM, and the memory 701 is used to store relevant instructions and data. Memory 701 stores the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof:

and (3) operating instructions: including various operational instructions for performing various operations.

Operating the system: including various system programs for implementing various basic services and for handling hardware-based tasks.

Only one memory is shown in fig. 7, but of course, the memory may be provided in plural numbers as necessary.

The transceiver 703 may be a communication module or a transceiver circuit, and is used to implement transmission of information such as data and signaling between the network device and the user equipment. In the embodiment of the present invention, the transceiver 703 is used to perform the operations related to the first embodiment, such as obtaining the SRS signal strength, the SRS interference strength, and transmitting the resource reconfiguration signaling.

The processor 701 may be a controller, CPU, general purpose processor, DSP, ASIC, FPGA or other programmable logic device, transistor logic device, hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure of the embodiments of the application. The processor 701 may also be a combination of computing functions, e.g., comprising one or more microprocessors, a combination of DSPs and microprocessors, or the like. In this embodiment of the present invention, the processor 701 may be configured to perform an operation of performing SRS interference coordination between the first cell and N co-frequency neighboring cells thereof based on SRS signal strengths in each beam direction in the first cell and/or SRS interference strengths in each beam direction in the first cell, which are related in the first embodiment.

One of ordinary skill in the art will appreciate that all or part of the processes in the methods of the above embodiments may be implemented by hardware related to instructions of a computer program, which may be stored in a computer-readable storage medium, and when executed, may include the processes of the above method embodiments. And the aforementioned storage medium includes: various media capable of storing program codes, such as ROM or RAM, magnetic or optical disks, etc.

Claims

1. A method for interference coordination of Sounding Reference Signals (SRS), the method comprising:

obtaining SRS spatial characteristics corresponding to a first cell, wherein the SRS spatial characteristics comprise SRS signal intensity in each wave beam direction in the first cell;

determining UE distribution in each beam direction in the first cell according to SRS signal strength in each beam direction in the first cell;

dividing the first cell into M target areas according to the UE distribution in each beam direction, wherein the difference between the UE number in each target area in the M target areas is smaller than a preset difference, and M is a positive integer greater than or equal to 2;

configuring SRS resources corresponding to the target areas, wherein the SRS resources corresponding to any one target area k in the M target areas are different from the SRS resources corresponding to any one co-frequency adjacent area j in the N co-frequency adjacent areas of the first cell, which are overlapped with the target area k or adjacent interference areas;

and realizing SRS interference coordination between the first cell and the N same-frequency adjacent cells based on the SRS resources corresponding to the target regions.

2. The method of claim 1, wherein the obtaining the spatial domain feature of the SRS corresponding to the first cell comprises:

acquiring first SRS resource configuration information corresponding to a first cell;

determining SRS signal strength in each beam direction in the first cell according to the first SRS resource configuration information, wherein the SRS signal strength in any beam i in each beam comprises SRS signal strength transmitted by one or more User Equipment (UE) in the beam i direction.

3. The method according to claim 1 or 2, wherein before obtaining the spatial signature of the SRS corresponding to the first cell, the method further comprises:

acquiring the total interference strength of the SRS corresponding to the first cell;

and if the total interference intensity of the SRS corresponding to the first cell is greater than a preset total intensity threshold value, executing the step of obtaining the spatial domain characteristic of the SRS corresponding to the first cell.

4. A method for interference coordination of Sounding Reference Signals (SRS), the method comprising:

obtaining SRS spatial characteristics corresponding to a first cell, wherein the SRS spatial characteristics comprise SRS interference intensity in each beam direction in the first cell;

determining one or more strong interference UEs corresponding to the first cell in N same-frequency neighboring cells of the first cell according to the SRS interference strength in each beam direction;

sending SRS power resource reconfiguration signaling to the one or more strong interference UEs, and indicating the one or more strong interference UEs to reduce SRS transmission power based on the SRS power resource reconfiguration signaling so as to realize SRS interference coordination between the first cell and N same-frequency neighboring cells of the first cell.

5. The method of claim 4, wherein the transmitting SRS power resource reconfiguration signaling to the one or more strong interfering UEs comprises:

obtaining SRS signal quality information corresponding to each strong interference UE in the one or more strong interference UEs;

determining one or more target interference UEs from the strong interference UEs according to the SRS signal quality information corresponding to the strong interference UEs, wherein the target interference UEs are UEs of which the signal quality is equal to or greater than a preset signal quality threshold;

transmitting SRS power resource reconfiguration signaling to the one or more target UEs.

6. The method according to claim 4 or 5, wherein the obtaining of the SRS spatial signature corresponding to the first cell comprises:

acquiring N groups of second SRS configuration information corresponding to N co-frequency adjacent cells of a first cell, wherein one co-frequency adjacent cell corresponds to one group of second SRS configuration information, the group of second SRS configuration information comprises SRS configuration information corresponding to at least one interference UE in the co-frequency adjacent cell, and the interference UE is a UE meeting at least one of the following conditions: reporting A3 measurement event, locating at the edge of the cell and locating on the edge beam;

and determining SRS interference strength in each beam direction in the first cell according to the N groups of second SRS configuration information, wherein the SRS interference strength in any beam i in each beam direction comprises SRS signal strength received in the beam i direction and transmitted by one or more interfering UEs in the N co-frequency neighboring cells.

7. The method of claim 6, wherein before obtaining the SRS spatial signature corresponding to the first cell, the method further comprises:

8. A method for interference coordination of Sounding Reference Signals (SRS), the method comprising:

obtaining SRS spatial characteristics corresponding to a first cell, wherein the SRS spatial characteristics comprise SRS signal intensity in each beam direction in the first cell and SRS interference intensity in each beam direction in the first cell, and at least one first UE exists in the first cell;

acquiring identification information of the first UE;

determining one or more main beams corresponding to the first UE from each beam in the first cell according to the identification information and the SRS signal strength in each beam direction in the first cell;

determining one or more non-severe interference beams corresponding to the first UE from one or more non-main beams in the beams according to SRS interference strength in each beam direction in the first cell, wherein the non-main beams are beams in the beams except for the one or more main beams, and the non-severe interference beams are beams with received interference strength smaller than a preset interference strength threshold in the one or more non-main beams;

performing channel estimation on the first UE based on the SRSs corresponding to the one or more main beams and the SRSs corresponding to the one or more non-severe interference beams to obtain a channel estimation result corresponding to the first UE;

and realizing SRS interference coordination between the first cell and N co-frequency adjacent cells of the first cell based on the channel estimation result corresponding to the first UE.

9. The method of claim 8, wherein the obtaining the spatial domain feature of the SRS corresponding to the first cell comprises:

10. The method of claim 8, wherein the obtaining the spatial signature of the SRS corresponding to the first cell comprises:

11. The method according to any of claims 8-10, wherein before obtaining the SRS spatial signature corresponding to the first cell, the method further comprises:

12. A method for interference coordination of Sounding Reference Signals (SRS), the method comprising:

acquiring identification information corresponding to the first UE;

determining one or more main interference beams corresponding to the first UE from the one or more main beams according to SRS interference strength in each beam direction in the first cell, wherein the main interference beams are beams with interference strength received by the one or more main beams being equal to or greater than a preset interference strength threshold;

removing part or all of SRS interference contained in the SRS received based on the one or more main interference beams to obtain a target SRS corresponding to the one or more main interference beams;

performing channel estimation on the first UE based on the target SRS corresponding to the one or more main interference beams and the SRSs corresponding to the beams except the one or more main interference beams in each beam to obtain a channel estimation result corresponding to the first UE;

13. The method of claim 12, wherein the obtaining the spatial domain feature of the SRS corresponding to the first cell comprises:

14. The method of claim 12, wherein the obtaining the SRS spatial signature corresponding to the first cell comprises:

15. The method according to any of claims 12-14, wherein before obtaining the SRS spatial signature corresponding to the first cell, the method further comprises:

16. An interference processing apparatus for Sounding Reference Signals (SRS), the apparatus comprising:

an obtaining unit, configured to obtain an SRS spatial signature corresponding to a first cell, where the SRS spatial signature includes SRS signal strength in each beam direction in the first cell;

an interference coordination unit, configured to determine, according to SRS signal strength in each beam direction in the first cell, UE distribution in each beam direction in the first cell;

the interference coordination unit is further configured to divide the first cell into M target areas according to UE distribution in each beam direction, where a difference between the number of UEs in each target area in the M target areas is smaller than a preset difference, and M is a positive integer greater than or equal to 2;

the interference coordination unit is further configured to configure SRS resources corresponding to the target areas, where the SRS resource corresponding to any target area k in the M target areas is different from the SRS resource corresponding to an interference area overlapping with the target area k or adjacent to the target area k in any one of N co-frequency adjacent areas j of the first cell;

the interference coordination unit is further configured to implement SRS interference coordination between the first cell and the N co-frequency neighboring cells based on the SRS resources corresponding to the target regions.

17. The apparatus of claim 16, wherein the obtaining unit is configured to:

18. The apparatus of claim 16 or 17, further comprising:

a triggering unit, configured to obtain total SRS interference strength corresponding to the first cell;

and if the total interference intensity of the SRS corresponding to the first cell is greater than a preset total intensity threshold value, triggering the acquisition unit to execute the step of acquiring the spatial domain characteristics of the SRS corresponding to the first cell.

19. An interference processing apparatus for Sounding Reference Signals (SRS), the apparatus comprising:

an obtaining unit, configured to obtain an SRS spatial signature corresponding to a first cell, where the SRS spatial signature includes SRS interference intensity in each beam direction in the first cell;

an interference coordination unit, configured to determine, according to the SRS interference strength in each beam direction obtained by the obtaining unit, one or more strong interference UEs corresponding to the first cell in N co-frequency neighboring cells of the first cell;

the interference coordination unit is further configured to send SRS power resource reconfiguration signaling to the one or more strong interference UEs, and instruct the one or more strong interference UEs to reduce SRS transmission power based on the SRS power resource reconfiguration signaling to implement SRS interference coordination between the first cell and N co-frequency neighboring cells of the first cell.

20. The apparatus of claim 19, wherein the interference coordination unit is further configured to:

21. The apparatus according to claim 19 or 20, wherein the obtaining unit is configured to:

22. The apparatus of claim 21, further comprising:

23. An interference processing apparatus for Sounding Reference Signals (SRS), the apparatus comprising:

an obtaining unit, configured to obtain an SRS spatial signature corresponding to a first cell, where the SRS spatial signature includes SRS signal strength in each beam direction in the first cell and SRS interference strength in each beam direction in the first cell, and at least one first UE exists in the first cell;

an interference coordination unit, configured to acquire identification information of the first UE;

the interference coordination unit is further configured to determine, according to the identification information and SRS signal strengths in the beam directions in the first cell, one or more main beams corresponding to the first UE from the beams in the first cell;

the interference coordination unit is further configured to determine, according to the SRS interference intensity in each beam direction in the first cell obtained by the obtaining unit, one or more non-severe interference beams corresponding to the first UE from one or more non-primary beams in the beams, where the non-primary beams are beams other than the one or more primary beams in the beams, and the non-severe interference beams are beams with a received interference intensity smaller than a preset interference intensity threshold in the one or more non-primary beams;

the interference coordination unit is further configured to perform channel estimation on the first UE based on SRSs corresponding to the one or more main beams and SRSs corresponding to the one or more non-severe interference beams, so as to obtain a channel estimation result corresponding to the first UE;

the interference coordination unit is further configured to implement SRS interference coordination between the first cell and N co-frequency neighboring cells of the first cell based on a channel estimation result corresponding to the first UE.

24. The apparatus of claim 23, wherein the obtaining unit is configured to:

25. The apparatus of claim 23, wherein the obtaining unit is configured to:

26. The apparatus according to any one of claims 23-25, further comprising:

27. An interference processing apparatus for Sounding Reference Signals (SRS), the apparatus comprising:

an interference coordination unit, configured to obtain identification information corresponding to the first UE;

the interference coordination unit is further configured to determine, from each beam in the first cell, one or more main beams corresponding to the first UE according to the identification information and the SRS signal strength obtained by the obtaining unit in each beam direction in the first cell;

the interference coordination unit is further configured to determine, from the one or more main beams, one or more main interference beams corresponding to the first UE according to the identification information and the SRS interference strength obtained by the obtaining unit in each beam direction in the first cell, where a main interference beam is a beam whose received interference strength among the one or more main beams is equal to or greater than a preset interference strength threshold;

the interference coordination unit is further configured to remove part or all of SRS interference included in SRSs received based on the one or more main interference beams, so as to obtain target SRSs corresponding to the one or more main interference beams;

the interference coordination unit is further configured to perform channel estimation on the first UE based on a target SRS corresponding to the one or more main interference beams and SRSs corresponding to beams other than the one or more main interference beams in each of the beams, so as to obtain a channel estimation result corresponding to the first UE;

28. The apparatus of claim 27, wherein the obtaining unit is configured to:

29. The apparatus of claim 27, wherein the obtaining unit is configured to:

30. The apparatus of any one of claims 27-29, further comprising:

31. An electronic device, comprising a memory to store program code, a processor, and a transceiver to invoke the program code stored by the memory to perform the method of any of claims 1-3, 4-7, 8-11, or 12-15.

32. A computer-readable storage medium comprising instructions that, when executed on a computer, cause the computer to perform the method of any of claims 1-3, 4-7, 8-11, or 12-15.