User set division method and device based on coordinated multi-point transmission

Abstract

The embodiment of the invention provides a user set division method and device based on coordinated multi-point transmission. The method comprises the following steps: a plurality of access nodes perform first beam scanning, obtain a first reference signal received power (RSRP) value of a first beam pair with the strongest signal strength from all beam pairs between the plurality of access nodes and a terminal, and determine an access node corresponding to the first beam pair as a main access node; performing second beam scanning by a non-main access node in the plurality of access nodes, and acquiring a second RSRP value of a second beam pair with the strongest signal strength from all beam pairs between the non-main access node and the terminal; and dividing the terminals into corresponding user sets according to the first RSRP value and the second RSRP value. According to the embodiment of the invention, the problem that the influence of the interference generated by the user terminal on the transmission performance is ignored for the user terminal which is close to the coverage overlapping area but not in the central area of the overlapping area in the related technology is solved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of communication technologies, and in particular, to a method and device for partitioning a user set based on multi-point cooperative transmission. Background Art

[0002] With the sharp increase in the demand for mobile data traffic, the networking scale of wireless communication systems has been continuously expanding. For both centralized and distributed networks, additional transmission performance enhancement processing needs to be performed on the coverage overlapping area between base stations. For example, the coordinated multi-point (CoMP) transmission technology can improve the cell-edge throughput, increase the coverage of high-rate data services, and improve the overall system throughput by reducing or eliminating co-channel interference and enhancing the received signal power.

[0003] In the CoMP transmission technology, the technical method for determining whether a user terminal (User Equipment, UE) is located in the coverage overlapping area between access nodes is generally determined by the difference in the uplink channel signal power or the path propagation loss received by each base station access node. However, in high-frequency communication systems, such as millimeter-wave frequency bands or terahertz frequency bands, analog beams are usually used for signal transmission. Therefore, there is a strong coupling relationship between the uplink channel received power and the received beams of each access point and the transmitted beam of the terminal. Based on the difference in the uplink channel signal power or the path propagation loss for determination, the determination result will be inaccurate, that is, the above-mentioned solutions in the related art are no longer applicable. In addition, the solutions in the related art generally only consider classifying the terminal into two categories: cooperative users and non-cooperative users, ignoring the interference generated by other terminals that are close to the coverage overlapping area but not in the central area of the overlapping area. Therefore, there is still room for improvement in transmission performance. Summary of the Invention

[0004] The embodiments of the present application provide a method and device for partitioning a user set based on multi-point cooperative transmission, so as to at least solve the problem in the related art that for user terminals that are close to the coverage overlapping area but not in the central area of the overlapping area, the interference generated by the user terminal on the transmission performance is ignored.

[0005] According to an embodiment of the present application, a method for partitioning a user set based on multi-point cooperative transmission is provided. The method is applied to a base station and includes: multiple access nodes perform a first beam scan, obtain the first reference signal received power (RSRP) value of the first beam pair with the strongest signal strength from all beam pairs between the multiple access nodes and a terminal, and determine the access node corresponding to the first beam pair as the primary access node; non-primary access nodes among the multiple access nodes perform a second beam scan, and obtain the second RSRP value of the second beam pair with the strongest signal strength from all beam pairs between the non-primary access nodes and the terminal; according to the first RSRP value and the second RSRP value, partition the terminal into a corresponding user set.

[0006] According to another embodiment of the present application, a method for partitioning a user set based on multi-point cooperative transmission is provided. The method is applied to a terminal and includes: performing a receive beam sweep based on the first beam scan of each access node on the base station side; reporting the K beam pairs with the strongest signal strength and their corresponding reference signal received power (RSRP) values in the receive beam sweep to the base station side, so that the base station side determines the first beam pair with the strongest signal strength, the first RSRP value corresponding to the first beam pair, and the primary access node from the K beam pairs, where K is an integer greater than 0; receiving the second beam scan of the non-primary access node through the receive beam corresponding to the first beam pair, and reporting the RSRP value of each beam pair in the second beam scan to the base station side, so that the base station side determines the second beam pair and its corresponding second RSRP value.

[0007] According to still another embodiment of the present application, a device for partitioning a user set based on multi-point cooperative transmission is provided. The device is located on a base station and includes: a determination module, configured to perform a first beam scan based on multiple access nodes, obtain the first reference signal received power (RSRP) value of the first beam pair with the strongest signal strength from all beam pairs between the multiple access nodes and a terminal, and determine the access node corresponding to the first beam pair as the primary access node; an acquisition module, configured to perform a second beam scan based on non-primary access nodes among the multiple access nodes, and obtain the second RSRP value of the second beam pair with the strongest signal strength from all beam pairs between the non-primary access nodes and the terminal; a partitioning module, configured to partition the terminal into a corresponding user set according to the first RSRP value and the second RSRP value.

[0008] According to another embodiment of the present application, there is provided a user set partitioning device based on multi-point cooperative transmission, located at a terminal, including: a receiving module, configured to perform receiving beam round-robin based on the first beam scanning of each access node on the base station side; a first reporting module, configured to report the K beam pairs with the strongest signal strength and their corresponding reference signal received power (RSRP) values in the receiving beam round-robin to the base station side, so that the base station side determines the first beam pair with the strongest signal strength, the first RSRP value corresponding to the first beam pair, and the primary access node from the K beam pairs, where K is an integer greater than 0; a second reporting module, configured to receive the second beam scanning of the non-primary access node through the receiving beam corresponding to the first beam pair, and report the RSRP value of each beam pair in the second beam scanning to the base station side, so that the base station side determines the second beam pair and its corresponding second RSRP value.

[0009] According to another embodiment of the present application, there is also provided a computer-readable storage medium, in which a computer program is stored, and the computer program is configured to execute the steps in any one of the above method embodiments when running.

[0010] According to another embodiment of the present application, there is also provided an electronic device, including a memory and a processor, where a computer program is stored in the memory, and the processor is configured to run the computer program to execute the steps in any one of the above method embodiments.

[0011] Through the above embodiments of the present application, by using a dual-threshold judgment method, the category to which the user terminal belongs can be more accurately partitioned. User terminals that are close to the coverage overlap area but not in the central area of the overlap area can be separately partitioned into a category. Then, corresponding transmission strategies can be adapted according to this category, so that the user terminals of this category and the entire communication system achieve a relatively superior transmission performance. Therefore, the problem in the related art that for user terminals that are close to the coverage overlap area but not in the central area of the overlap area, the impact of the interference generated by the user terminal on the transmission performance is ignored can be solved, and the effect of improving the transmission performance of the communication system can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a network architecture diagram of a communication system of a user set partitioning method based on multi-point cooperative transmission running according to an embodiment of the present application;

[0013] Figure 2 is a flowchart of a user set partitioning method based on multi-point cooperative transmission according to an embodiment of the present application;

[0014] Figure 3 is a flowchart of a user set partitioning method based on multi-point cooperative transmission according to another embodiment of the present invention;

[0015] Figure 4 is a structural block diagram of a user set partitioning device based on multi - point cooperative transmission according to an embodiment of the present application;

[0016] Figure 5 is a structural block diagram of a user set partitioning device based on multi - point cooperative transmission according to another embodiment of the present application;

[0017] Figure 6 is a structural block diagram of a user set partitioning device based on multi - point cooperative transmission according to still another embodiment of the present application;

[0018] Figure 7 is a flowchart of a terminal scheduling method according to an embodiment of the present application;

[0019] Figure 8 is a schematic diagram of a terminal scheduling method based on beam pair scanning according to Embodiment 1 of the scenario of the present application;

[0020] Figure 9 is a schematic diagram of a terminal scheduling method based on beam pair scanning according to Embodiment 2 of the scenario of the present application. Detailed implementation manners

[0021] The embodiments of the present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0022] It should be noted that the terms "first", "second", etc. in the specification, claims and the above - mentioned drawings of the present application are used to distinguish similar objects and do not necessarily need to describe a specific order or sequence.

[0023] The embodiments of the present application can run on Figure 1 the communication system shown as Figure 1 shown, this communication system is a high - frequency distributed communication system with dense base station deployment, including: multiple access nodes (only two are shown in the figure) and user terminals (hereinafter simply referred to as terminals or UEs). Among them, the access nodes are located on the base stations, each access node emits multiple transmit beams, and the user terminal emits multiple receive beams. Multiple beam pairs will be formed between the multiple transmit beams and the multiple receive beams. In the embodiments of the present application, based on the signal strength of each beam pair and in combination with a preset first RSRP (Reference Signal Receiving Power) value and the second RSRP value, the terminals can be partitioned into different categories of user sets, which is convenient for matching corresponding transmission strategies for different categories of terminals.

[0024] In this embodiment, a method for partitioning a user set based on multi-point cooperative transmission operating in the above communication system is provided. The method is applied to the base station side and is applicable to a scenario of an analog beam transmission system with an overlapping coverage area between distributed access nodes. Multiple access nodes can cooperate and interact to improve the overall throughput of the wireless network system and the usage experience of edge users. Figure 2 is a flowchart of a method for partitioning a user set based on multi-point cooperative transmission according to an embodiment of the present application, as Figure 2 shown. The process includes the following steps:

[0025] Step S202: Multiple access nodes perform a first beam scan, obtain the first reference signal received power (RSRP) value of the first beam pair with the strongest signal strength from all beam pairs between the multiple access nodes and the terminal, and determine the access node corresponding to the first beam pair as the primary access node.

[0026] In this embodiment, after the first beam scan is completed, the terminal side can determine the signal strength of each beam pair in the first beam scan and report the K (K is an integer greater than zero) beam pairs with the highest signal strength to the base station. The base station will determine the access node corresponding to the strongest beam pair from the K beam pairs as the primary access node.

[0027] In one embodiment, the first beam scan is performed through the first channel state information reference signal channel or the single-sideband channel.

[0028] Step S204: The non-primary access nodes among the multiple access nodes perform a second beam scan and obtain the second RSRP value of the second beam pair with the strongest signal strength from all beam pairs between the non-primary access nodes and the terminal.

[0029] In one embodiment, the second beam scan is performed through the second channel state information reference signal channel.

[0030] In one embodiment, the first beam scan is a beam sweep of all beams on the base station side and all beams on the terminal side simultaneously; the second beam scan is a beam sweep of all beams of the non-primary access nodes received by a fixed beam on the terminal side, and the fixed beam is the beam corresponding to the terminal side in the first beam pair.

[0031] Wherein, the first beam pair is the beam pair with the strongest signal strength among all beam pairs in the first beam scan; the second beam pair is the beam pair with the strongest signal strength among all beam pairs in the second beam scan.

[0032] Step S206: Partition the terminal into the corresponding user set according to the first RSRP value and the second RSRP value.

[0033] In one embodiment, the terminal is classified into a corresponding user set according to a threshold condition satisfied by a difference between the first RSRP value and the second RSRP value.

[0034] Adopting a dual-threshold (i.e., a first preset threshold and a second preset threshold) judgment scheme can further refine the user set categories, so as to more accurately identify the user set category to which the terminal belongs. Furthermore, the terminal can match a more suitable transmission strategy, which can improve the overall performance of the communication system.

[0035] In step S206 of this embodiment, classifying the terminal into a corresponding user set includes: when the difference between the first RSRP value and the second RSRP value is less than the first preset threshold, classifying the terminal into a cooperative user set; when the difference between the first RSRP value and the second RSRP value is less than the second preset threshold, classifying the terminal into an interfering user set, where the first preset threshold is less than the second preset threshold; when the difference between the first RSRP value and the second RSRP value is greater than or equal to the second preset threshold, classifying the terminal into an ordinary user set.

[0036] After step S206 of this embodiment, the method further includes: when the terminal is classified into a cooperative user set, classifying the non-primary access node corresponding to the second beam pair into a cooperation node set; when the terminal is classified into an interfering user set, classifying the non-primary access node corresponding to the second beam pair into an interference node set.

[0037] After step S206 of this embodiment, the method further includes: selecting a transmission strategy corresponding to the user set to which the terminal belongs for data transmission.

[0038] In one embodiment, selecting a transmission strategy corresponding to the user set to which the terminal belongs for data transmission includes: when the terminal is classified into a cooperative user set, performing multi-point cooperative transmission through the primary access node and the cooperation nodes included in the cooperative user set; when the terminal is classified into an interfering user set, transmitting through the primary access node and performing interference coordination scheduling on the interference nodes included in the interfering user set.

[0039] After step S206 of this embodiment, the method further includes: storing at least one of the following information as the log information of the non-access node: the scanning result of the second beam scanning, the cooperative transmission control signaling, and the interference coordination control signaling.

[0040] Through the above steps, by using the dual-threshold judgment method, the category to which the user terminal belongs can be more accurately divided. User terminals that are close to the coverage overlap area but not in the central area of the overlap area can be separately divided into a category. Then, a corresponding transmission policy can be adapted according to this category, enabling the user terminals of this category and the entire communication system to achieve a relatively superior transmission performance. Therefore, it can solve the problem in the related art that for user terminals that are close to the coverage overlap area but not in the central area of the overlap area, the impact of the interference generated by the user terminal on the transmission performance is ignored, and the effect of improving the transmission performance of the communication system can be achieved.

[0041] An embodiment of the present invention further provides a method for dividing a user set based on multi-point cooperative transmission, which is applied to a terminal. Figure 3 It is a flowchart of a method for dividing a user set based on multi-point cooperative transmission according to another embodiment of the present invention, as Figure 3 shown. The method includes the following steps:

[0042] Step S302, perform a receiving beam sweep based on the first beam sweep of each access node on the base station side;

[0043] Step S304, report the K beam pairs with the strongest signal strength and their corresponding reference signal received power (RSRP) values in the receiving beam sweep to the base station side, so that the base station side determines the first beam pair with the strongest signal strength, the first RSRP value corresponding to the first beam pair, and the primary access node from the K beam pairs, where K is an integer greater than 0;

[0044] Step S306, receive the second beam sweep of the non-primary access node through the receiving beam corresponding to the first beam pair, and report the RSRP value of each beam pair in the second beam sweep to the base station side, so that the base station side determines the second beam pair and its corresponding second RSRP value.

[0045] After step S306 of this embodiment, the method further includes: performing information transmission according to a corresponding transmission policy according to the category of the user set, where the division of the category of the user set is determined by the base station side based on the first RSRP value and the second RSRP value.

[0046] Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by means of software plus a necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is a better implementation manner. Based on such an understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art can be embodied in the form of a software product. The computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes several instructions for causing a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in various embodiments of the present application.

[0047] In this embodiment, a user set partitioning device based on multi-point cooperative transmission is further provided. The device is used to implement the above embodiments and preferred implementation manners, and those that have been described will not be repeated. As used hereinafter, the term "module" can be a combination of software and / or hardware that can implement a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementation in hardware, or a combination of software and hardware is also possible and contemplated.

[0048] Figure 4 is a structural block diagram of a user set partitioning device based on multi-point cooperative transmission according to an embodiment of the present application. The device is located on a base station, as Figure 4 shown, the device includes: a determination module 10, an acquisition module 20, and a partitioning module 30.

[0049] The determination module 10 is configured to perform a first beam scan based on multiple access nodes, obtain a first reference signal received power (RSRP) value of the first beam pair with the strongest signal strength from all beam pairs between the multiple access nodes and the terminal, and determine the access node corresponding to the first beam pair as the primary access node;

[0050] The acquisition module 20 is configured to perform a second beam scan based on non-primary access nodes among the multiple access nodes, and obtain a second RSRP value of the second beam pair with the strongest signal strength from all beam pairs between the non-primary access nodes and the terminal;

[0051] The partitioning module 30 is configured to partition the terminal into a corresponding user set according to a threshold condition satisfied by a difference between the first RSRP value and the second RSRP value.

[0052] In one embodiment, the first beam scan is a beam sweep in which all beams on the base station side and all beams on the terminal side are simultaneously performed; the second beam scan is a beam sweep in which a fixed beam on the terminal side receives all beams of the non-primary access nodes, and the fixed beam is the beam corresponding to the terminal side in the first beam pair.

[0053] Figure 5 is a structural block diagram of a user set partitioning device based on multi - point cooperative transmission according to another embodiment of the present application. As Figure 5 shown, in addition to including all the modules shown in Figure 4 , the partitioning module 30 includes:

[0054] A first partitioning unit 31, configured to partition the terminal into a cooperative user set when the difference between the first RSRP value and the second RSRP value is less than the first preset threshold;

[0055] A second partitioning unit 32, configured to partition the terminal into an interfering user set when the difference between the first RSRP value and the second RSRP value is less than the second preset threshold, where the first preset threshold is less than the second preset threshold;

[0056] A third partitioning unit 33, configured to partition the terminal into a normal user set when the difference between the first RSRP value and the second RSRP value is greater than or equal to the second preset threshold.

[0057] Figure 6 is a structural block diagram of a user set partitioning device based on multi - point cooperative transmission according to an embodiment of the present application. The device is located on the terminal. As Figure 6 shown, it includes: a receiving module 40, a first reporting module 50, and a second reporting module 60.

[0058] The receiving module 40 is configured to perform receiving beam sweeping based on the first beam sweeping of each access node on the base station side;

[0059] The first reporting module 50 is configured to report the K beam pairs with the strongest signal strength and their corresponding reference signal received power (RSRP) values in the receiving beam sweeping to the base station side, so that the base station side determines the first beam pair with the strongest signal strength, the first RSRP value corresponding to the first beam pair, and the primary access node from the K beam pairs, where K is an integer greater than 0;

[0060] The second reporting module 60 is configured to receive the second beam sweeping of the non - primary access node through the receiving beam corresponding to the first beam pair, and report the RSRP value of each beam pair in the second beam sweeping to the base station side, so that the base station side determines the second beam pair and its corresponding second RSRP value.

[0061] It should be noted that the above-mentioned modules can be implemented by software or hardware. For the latter, it can be implemented in the following ways, but not limited to this: the above-mentioned modules are all located in the same processor; or, the above-mentioned modules are separately located in different processors in any combination form.

[0062] The embodiment of this application is applied to the multi-point cooperative transmission scenario of a wireless communication distributed system, combines the characteristics of a high-frequency band communication system, and provides a method for identifying overlapping area terminals based on P1 / P2 beam scanning. Among them, the P1 beam scanning is functionally equivalent to the first beam scanning in the above-mentioned embodiment, and the P2 beam scanning is functionally equivalent to the second beam scanning in the above-mentioned embodiment. Through this method, before terminal scheduling, double-threshold judgment can be performed according to P1 / P2 beam measurement to construct or update the cooperative user set, interference user set, and ordinary user set; the generated cooperative user set, interference user set, and ordinary user set can provide a reliable basis for optimizing the cooperative transmission performance in the distributed system, and implementing different transmission strategies for different categories of users can improve the overall performance of the wireless network system. For example: for users in the cooperative user set, multi-point cooperative joint transmission can be used to enhance the throughput performance; for users in the interference user set, schemes such as interference cooperative scheduling can be used to reduce the mutual interference of edge users and thus improve the demodulation performance.

[0063] Based on the above method for identifying overlapping area terminals, an embodiment of this application also provides a terminal scheduling method, which mainly includes: P1 / P2 beam scanning and reporting, double-threshold judgment-based, and adaptive selection of transmission strategies; among them, the P1 / P2 beam scanning and reporting part is used for measuring the overall channel quality between the terminal and each access node; the double-threshold judgment-based is used to determine the user set to which the terminal belongs (including three types: cooperative user set, interference user set, and ordinary user set); the adaptive selection of transmission strategies is used to adaptively determine the transmission strategy according to the user set to which the terminal belongs.

[0064] Figure 7 is a flowchart of the terminal scheduling method according to the embodiment of this application. This method involves a base station and a terminal. Specifically, the terminal is located between multiple access nodes in a communication system (such as Figure 2 shown), as Figure 7 shown, and the process includes the following steps:

[0065] Step S702: Each access node on the base station side and the terminal both perform P1 beam scanning.

[0066] In one embodiment, the P1 beam round-robin scanning is performed using the SSB channel or the CSI-RS channel. The P1 beam scanning means that the beam round-robin scanning is performed simultaneously on the base station side and the terminal side.

[0067] Step S704: The terminal determines and reports the measurement information of the K beams with the strongest signal strength (e.g., the correspondence between beam pairs and signal strength) and the corresponding RSRP, and maintains the receiving beams on the terminal side corresponding to the K beam pairs; the base station further determines the strongest beam pair with the strongest signal strength from the K beam pairs, and uses the access node corresponding to the strongest beam as the primary access node; among them, the signal strength can be represented by the RSRP value.

[0068] Step S706: The non-primary access nodes on the base station side perform P2 beam scanning, and the terminal receives the P2 measurement signal with the receiving beam on the terminal side corresponding to the strongest beam of the base station and reports the corresponding RSRP.

[0069] P2 beam scanning means that the base station side performs beam sweeping under the condition that the receiving beam on the terminal side is fixed.

[0070] Among them, for the J (J≤K - 1) beams from non-primary access nodes among the (K - 1) beams other than the strongest beam, P2 beam scanning of the CSI-RS channel is performed;

[0071] Step S708, terminal division is performed through dual-threshold judgment.

[0072] For example: Assume that the RSRP of the primary access node and the terminal with the strongest RSRP value is S0, and the maximum RSRP reported by the P2 scan of the other J beams is S j , j∈{1, 2, …, J}. After performing dual-threshold judgment and meeting the conditions, the terminal is added to the cooperative user set / interference user set / ordinary user set, where the RSRP thresholds satisfy δ1 < δ2, and the specific values of the RSRP thresholds can be determined by various methods such as expert experience or performance simulation. The specific judgment conditions are as follows:

[0073] If S0 - S j < δ1:

[0074] Add this terminal to the cooperative user set C;

[0075] Add the access node corresponding to beam j to the cooperative node set CNode of this terminal;

[0076] Elif S0 - S j < δ2:

[0077] Add this terminal to the interference user set I;

[0078] Add the access node corresponding to beam j to the interference node set INode of this terminal;

[0079] Elif S0 - S j ≥ δ2:

[0080] Add this terminal to the ordinary user set N;

[0081] Step S710, adaptively select a transmission strategy according to the category to which the terminal belongs.

[0082] The specific strategy selection is as follows:

[0083] If the terminal belongs to the collaborative user set C:

[0084] Use the primary access node to perform multi-point cooperative transmission with the cooperative nodes included in CNode;

[0085] Elif the terminal belongs to the interfering user set I:

[0086] Use the primary access node for transmission and perform interference coordinated scheduling on the interfering nodes included in INode;

[0087] Elif the terminal belongs to the ordinary user set N:

[0088] No additional special processing.

[0089] For the convenience of understanding the technical solution provided by this application, the following will elaborate in detail with the embodiments in specific scenarios.

[0090] Scenario Embodiment 1

[0091] Scenario of a single terminal moving to the overlapping area of two access nodes

[0092] The trajectory of Terminal 1 is as Figure 8 shown. The terminal moves from left to right and will be in different overlapping areas. As the terminal moves, the user category to which it belongs will change, and the corresponding transmission strategy will also change accordingly. Specifically:

[0093] Step 1: Access Node 1 and Access Node 2 perform P1 beam scanning using the CSI-RS channel, and at the same time, the terminal side receives beam sweeping;

[0094] Step 2: The terminal side determines and reports the measurement information of the 4 strongest beams and the corresponding RSRP, and maintains the corresponding receiving beam on the terminal side. The base station side determines the access node 1 corresponding to the strongest beam pair as the primary access node.

[0095] Assume that the four strongest beam pairs are successively: {access node 1 - beam1, terminal 1 - beam2}, {access node 1 - beam2, terminal 1 - beam1}, {access node 2 - beam4, terminal 1 - beam2}, {access node 2 - beam3, terminal 1 - beam2}; the base station side determines to use access node 1 corresponding to the strongest beam pair {access node 1 - beam1, terminal 1 - beam2} as the primary access node; then the base station side determines that access node 1 corresponding to the beam pair {access node 1 - beam1, terminal 1 - beam2} is the primary access node.

[0096] Step 3: The base station side performs CSI - RS beam sweeping on the two beams {beam4, beam3} of access node 2; the terminal side receives the P2 measurement signal with the receiving beam beam2 corresponding to the strongest beam pair of the base station and reports the corresponding RSRP.

[0097] Step 4: Perform terminal classification through double - threshold judgment.

[0098] For example: The RSRP of {access node 1 - beam1, terminal 1 - beam2} is S0 = 20dB, and the RSRPs reported by the P2 scans of the two beams of access node 2 are S1 = 18dB and S2 = 10dB respectively. Assuming δ1 = 5 and δ2 = 10, it is found that the condition S0 - S1 < δ1 is satisfied after double - threshold judgment. Therefore, the terminal 1 is added to the cooperative user set C; access node 2 corresponding to beam4 is added to the cooperative node set C Node of this terminal.

[0099] Step 5: Adaptively select a transmission strategy according to the type of the terminal.

[0100] For example: As can be seen from Step 4, terminal 1 belongs to the cooperative user set C, and all use the primary access node to perform multi - point cooperative transmission with the cooperative node access node 2 included in C Node.

[0101] When the terminal is Figure 2 in the situation shown in, that is, the terminal is at a position close to access node 1 and moves in the direction of access node 2, then in such a moving process, the scheduling method flow for the terminal is the same as above, and since the terminal is closer to access node 1 at this time, terminal 1 will probably be judged to belong to the interference user set or the ordinary user set.

[0102] Scenario Embodiment 2

[0103] Terminal Uniform Distribution Scenario

[0104] As Figure 9 shown, multiple terminals (i.e., Figure 9UE1-UE12) in a uniformly distributed distributed transmission system, for each terminal in the system coverage, the double-threshold judgment operation corresponding to steps S702 to S708 in this method needs to be performed. The specific operation steps are the same as those in the above embodiments, and will not be elaborated here. After all terminals complete the above judgment and classification operations, they will correspond to the corresponding terminal categories. The final distribution and processing strategies of each category in this scenario are as follows:

[0105] 1. Cooperative user set C: {Terminal 3, Terminal 4, Terminal 5, Terminal 6}, for multi-point cooperative transmission;

[0106] 2. Interference user set I: {Terminal 1, Terminal 2, Terminal 7, Terminal 8}, for interference cooperative scheduling;

[0107] 3. Ordinary user set N: {Terminal 9, Terminal 10, Terminal 11, Terminal 12}, without additional special processing.

[0108] In one embodiment, the relevant information of all access nodes within a certain coverage area of the distributed communication system is stored in a log. For example, the log information for non-primary access nodes includes: the scanning results of P2 beam scanning, cooperative transmission control signaling, interference cooperative control signaling, etc.

[0109] In one embodiment, the hardware devices that can run the double-threshold judgment, construction or user set methods include, but are not limited to: digital signal processors (DSPs, Digital Signal Processors), field programmable gate arrays (FPGAs, Field Programmable Gate Arrays), and application specific integrated circuits (ASICs, Application Specific Integrated Circuits), etc. devices and chips.

[0110] Through the above embodiments of the present application, using the channel quality information between the terminal itself and each access node for feedback makes the channel measurement more accurate, which helps to improve the accuracy of terminal classification and judgment; through the double-threshold judgment method, the user categories can be further refined, and the corresponding adaptive strategy can better match the user channel state, ultimately enabling the user and the entire system to achieve better throughput performance. The embodiments of the present application are also applicable to the multi-point cooperative transmission scenario of the distributed system, adapting to the typical characteristics of the analog beam in the high-frequency communication system, which helps to efficiently implement multi-point cooperative transmission.

[0111] The method provided by the embodiments of the present application has multiple advantages over the solutions using artificial intelligence or neural networks. The complex situations caused by various different access node distributions and environmental channel states in distributed scenarios lead to the need for a large amount of data and complex training in AI methods, consuming a large amount of resources, and ultimately the generalization performance of the obtained solutions and models cannot be effectively guaranteed. However, the method in the embodiments of the present application has low computational complexity, is simple to implement, and has theoretical support, and can obtain deterministic gains in such application scenarios, having significant advantages over AI-based methods.

[0112] The embodiments of the present application also provide a computer-readable storage medium, in which a computer program is stored. Wherein, the computer program is configured to execute the steps in any one of the above method embodiments when running.

[0113] In an exemplary embodiment, the above computer-readable storage medium may include, but is not limited to: USB flash drives, read-only memories (ROM for short), random access memories (RAM for short), mobile hard disks, magnetic disks, or optical discs and other media that can store computer programs.

[0114] The embodiments of the present application also provide an electronic device, including a memory and a processor. A computer program is stored in the memory, and the processor is configured to run the computer program to execute the steps in any one of the above method embodiments.

[0115] In an exemplary embodiment, the above electronic device may further include a transmission device and an input / output device. Wherein, the transmission device is connected to the above processor, and the input / output device is connected to the above processor.

[0116] The specific examples in this embodiment may refer to the examples described in the above embodiments and exemplary embodiments, and will not be repeated here.

[0117] Obviously, those skilled in the art should understand that the above modules or steps of the present application can be implemented by a general-purpose computing device. They can be concentrated on a single computing device or distributed on a network composed of multiple computing devices. They can be implemented by program codes executable by the computing device, so that they can be stored in a storage device and executed by the computing device. And in some cases, the steps shown or described can be executed in a different order than here, or they can be separately made into individual integrated circuit modules, or multiple modules or steps among them can be made into a single integrated circuit module to implement. In this way, the present application is not limited to any specific combination of hardware and software.

[0118] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the principle of the present application shall be included within the protection scope of the present application.

Claims

1. A method for partitioning a user set based on multi-point cooperative transmission, characterized in that, Applied to a base station, including: Multiple access nodes perform a first beam scan, obtain the first reference signal received power (RSRP) value of the first beam pair with the strongest signal strength from all beam pairs between the multiple access nodes and the terminal, and determine the access node corresponding to the first beam pair as the primary access node; The non-primary access nodes among the multiple access nodes perform a second beam scan, and obtain the second RSRP value of the second beam pair with the strongest signal strength from all beam pairs between the non-primary access nodes and the terminal; According to the first RSRP value and the second RSRP value, divide the terminal into the corresponding user set.

2. The method according to claim 1, characterized in that, Wherein, The first beam scan is a beam sweep of all beams on the base station side and all beams on the terminal side simultaneously; the second beam scan is a beam sweep of all beams of the non-primary access nodes received by the fixed beam on the terminal side, and the fixed beam is the beam corresponding to the terminal side in the first beam pair.

3. The method according to claim 1, characterized in that, Dividing the terminal into the corresponding user set includes one of the following: In response to the difference between the first RSRP value and the second RSRP value being less than the first preset threshold, divide the terminal into the cooperative user set; In response to the difference between the first RSRP value and the second RSRP value being less than the second preset threshold, divide the terminal into the interfering user set, where the first preset threshold is less than the second preset threshold; In response to the difference between the first RSRP value and the second RSRP value being greater than or equal to the second preset threshold, divide the terminal into the ordinary user set.

4. The method according to claim 3, characterized in that, After dividing the terminal into the corresponding user set, the method further includes at least one of the following: When the terminal is divided into the cooperative user set, divide the non-primary access node corresponding to the second beam pair into the cooperative node set; When the terminal is divided into the interfering user set, divide the non-primary access node corresponding to the second beam pair into the interfering node set.

5. The method according to claim 3, characterized in that, After dividing the terminal into the corresponding user set, the method further includes: According to the user set to which the terminal belongs, select a transmission strategy corresponding to this user set for data transmission.

6. The method according to claim 5, characterized in that, According to the user set to which the terminal belongs, selecting a transmission strategy corresponding to this user set for data transmission includes: When the terminal is divided into the cooperative user set, perform multi-point cooperative transmission through the primary access node and the cooperative nodes included in the cooperative user set; When the terminal is divided into the interfering user set, transmit through the primary access node and perform interference coordination scheduling on the interfering nodes included in the interfering user set.

7. The method according to claim 1, characterized in that, Wherein, Perform the first beam scan through the first channel state information reference signal channel or the single-sideband channel, and perform the second beam scan through the second channel state information reference signal channel.

8. The method according to claim 1, characterized in that, After dividing the terminal into the corresponding user set, the method further includes: Store at least one of the following information as the log information of the non-primary access node: the scan result of the second beam scan, the cooperative transmission control signaling, and the interference coordination control signaling.

9. A method for partitioning a user set based on multi-point cooperative transmission, characterized in that, Applied to a terminal, including: Performing receive beam sweeping based on the first beam sweeping of each access node on the base station side; Reporting the K beam pairs with the strongest signal strength and their corresponding reference signal received power (RSRP) values in the receive beam sweeping to the base station side, so that the base station side determines the first beam pair with the strongest signal strength, the first RSRP value corresponding to the first beam pair, and the primary access node from the K beam pairs, where K is an integer greater than 0; Receiving the second beam sweeping of the non-primary access node through the receive beam corresponding to the first beam pair, and reporting the RSRP value of each beam pair in the second beam sweeping to the base station side, so that the base station side determines the second beam pair and its corresponding second RSRP value.

10. A device for partitioning a user set based on multi-point cooperative transmission, characterized in that, Located at the base station, including: A determination module, configured to perform a first beam sweep based on multiple access nodes, obtain the first reference signal received power (RSRP) value of the first beam pair with the strongest signal strength from all beam pairs between the multiple access nodes and the terminal, and determine the access node corresponding to the first beam pair as the primary access node; An acquisition module, configured to perform a second beam sweep based on the non-primary access nodes among the multiple access nodes, and obtain the second RSRP value of the second beam pair with the strongest signal strength from all beam pairs between the non-primary access nodes and the terminal; A partitioning module, configured to partition the terminal into a corresponding user set according to the first RSRP value and the second RSRP value.

11. An apparatus for partitioning a user set based on multi-point cooperative transmission, characterized in that, Located at the terminal, including: A receiving module, configured to perform receive beam sweeping based on the first beam sweeping of each access node on the base station side; A first reporting module, configured to report the K beam pairs with the strongest signal strength and their corresponding reference signal received power (RSRP) values in the receive beam sweeping to the base station side, so that the base station side determines the first beam pair with the strongest signal strength, the first RSRP value corresponding to the first beam pair, and the primary access node from the K beam pairs, where K is an integer greater than 0; A second reporting module, configured to receive the second beam sweeping of the non-primary access node through the receive beam corresponding to the first beam pair, and report the RSRP value of each beam pair in the second beam sweeping to the base station side, so that the base station side determines the second beam pair and its corresponding second RSRP value.

12. A computer-readable storage medium, characterized in that, A computer program is stored in the computer-readable storage medium, where when the computer program is run by a processor, it implements the method described in any one of claims 1 to 8, or implements the steps of the method described in claim 9.

13. A communication device, comprising: One or more processors; A memory, on which one or more programs are stored, and when the one or more programs are run by the one or more processors, the one or more processors implement the method described in any one of claims 1 to 8, or implement the steps of the method described in claim 9.

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