Beam transmission method, trp, centralized unit, storage medium

Abstract

The application provides a beam sending method, a TRP, a centralized unit and a storage medium, and the method comprises the following steps: before the sending time of a front beam of a first TRP arrives, a second TRP adjusts the second TRP according to a pre-acquired RIS configuration parameter; when the sending time of the front beam arrives, the second TRP reflects or transmits the front beam to generate a second user beam corresponding to the sending time of the front beam. The embodiment of the application can improve the communication quality.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of communication, in particular to a beam sending method, a transmit receive point (TRP), a centralized unit and a storage medium. BACKGROUND

[0002] Currently, some communication systems support beam communication between the network side and the terminal, but these communication systems often directly communicate with the terminal through a TRP, such as a TRP transmitting a user-type beam pointing to the terminal to deliver signals to the terminal. In practice, it is found that the current direct communication between a TRP and a terminal has the problem of poor communication quality. SUMMARY

[0003] Embodiments of the present application provide a beam sending method, a TRP, a centralized unit and a storage medium to solve the problem of poor communication quality.

[0004] Embodiments of the present application provide a beam sending method, comprising:

[0005] Before the transmission opportunity of the front-haul beam of the first TRP arrives, the second TRP adjusts the second TRP according to the pre-acquired reconfigurable intelligent surface (RIS) configuration parameter;

[0006] When the transmission opportunity of the front-haul beam arrives, the second TRP reflects or transmits the front-haul beam to generate a second-type user beam corresponding to the transmission opportunity of the front-haul beam.

[0007] Optionally, the transmission opportunity of the front-haul beam is a scanning opportunity of the front-haul beam.

[0008] Before the transmission opportunity of the front-haul beam of the first TRP arrives, the second TRP adjusts the second TRP according to the pre-acquired reconfigurable intelligent surface (RIS) configuration parameter;

[0009] Before the scanning opportunity of the front-haul beam of the first TRP arrives, the second TRP acquires the RIS configuration parameter of the second-type user beam corresponding to the scanning opportunity according to the pre-determined first mapping relationship between the scanning opportunity of the front-haul beam and the second-type user beam, and adjusts the second TRP according to the RIS configuration parameter.

[0010] Optionally, the first mapping relationship is a mapping relationship between a plurality of scanning occasions of a front-haul beam and a plurality of second-type user beams established before the start of the beam scanning phase, and each second-type user beam has at least one scanning occasion of the front-haul beam corresponding thereto; and the RIS configuration parameter is obtained by table lookup based on an incident direction of the front-haul beam and a beam direction of the second-type user beam.

[0011] Alternatively,

[0012] The first mapping relationship is a mapping relationship among a plurality of scanning occasions of a front-haul beam, a plurality of second-type user beams and RIS configuration parameters established before the start of the beam scanning phase, and each second-type user beam has at least one scanning occasion of the front-haul beam corresponding thereto.

[0013] Optionally, the front-haul beam is used to transmit a communication signal.

[0014] Before the transmission occasion of the front-haul beam of the first TRP arrives, the second TRP is adjusted according to the pre-acquired RIS configuration parameter, including:

[0015] Before the transmission occasion of the front-haul beam of the first TRP arrives, the second TRP acquires the RIS configuration parameter of the second-type user beam corresponding to the transmission occasion of the front-haul beam according to the second mapping relationship between the transmission occasion of the front-haul beam and the second-type user beam determined by the centralized unit, and adjusts the second TRP according to the RIS configuration parameter.

[0016] Optionally, the second mapping relationship is a mapping relationship between one or more transmission occasions of a front-haul beam and a second-type user beam established before the communication signal is transmitted; and the RIS configuration parameter is obtained by table lookup based on an incident direction of the front-haul beam and a beam direction of the second-type user beam.

[0017] Alternatively

[0018] The second mapping relationship is a mapping relationship among one or more transmission occasions of a front-haul beam, a second-type user beam and a RIS configuration parameter established before the communication signal is transmitted.

[0019] The embodiment of the application further provides a beam transmission method, comprising:

[0020] The first transmission and reception point (TRP) transmits the beam according to the determined beam transmission occasion, and the beam includes at least one of the following: a front-haul beam pointing to the second TRP, and a first-type user beam pointing to a terminal.

[0021] Optionally, the first TRP transmits the beam according to the determined beam transmission occasion, including at least one of the following:

[0022] The first TRP transmits the plurality of beams according to the plurality of beams determined by the centralized unit for beam sweeping, and the plurality of scanning occasions of the plurality of beams are transmitted in sequence.

[0023] The first TRP transmits the beam according to the beam determined by the centralized unit for communication with the terminal, and the transmission occasion of the beam.

[0024] Optionally, the method further comprises:

[0025] Establishing a mapping relationship between the first TRP and the second TRP, so that one first TRP corresponds to zero, one or multiple second TRPs, and one second TRP corresponds to at least one first TRP;

[0026] According to the corresponding relationship of each pair of first TRP and second TRP in the mapping relationship, and the distance and direction of the deployment of the first TRP and the second TRP, the front beam direction of the first TRP pointing to the second TRP is determined.

[0027] The embodiment of the application further provides a beam transmission method, comprising:

[0028] The centralized unit determines one or more beams, and allocates one or more transmission occasions for each beam, the beam including at least one of the following: a front beam pointing to a second transmission and reception TRP, a first type of user beam pointing to a terminal;

[0029] The centralized unit indicates the beam and its transmission occasion to the first TRP uniquely corresponding to the beam according to a predetermined corresponding relationship.

[0030] Optionally, the centralized unit determines one or more beams, and allocates one or more transmission occasions for each beam, including at least one of the following:

[0031] The centralized unit determines one or more beams according to beam scanning, and allocates one or more scanning occasions for each beam, and the scanning occasions allocated for the beams mapped with different first TRPs are different;

[0032] The centralized unit determines one beam according to the beam indication reported by the terminal, and allocates one or more transmission occasions for the beam.

[0033] Optionally, in a case where the one or more beams determined by the centralized unit according to the beam sweeping comprises a front-haul beam pointing to the second TRP, a sweeping occasion of the front-haul beam is a sweeping occasion allocated to the front-haul beam according to a first mapping relationship between the sweeping occasion of the front-haul beam and the second-type user beams.

[0034] Optionally, the first mapping relationship between the sweeping occasion of the front-haul beam and the second-type user beams is preconfigured or dynamically adjusted according to a beam direction and a number of the second-type user beams.

[0035] Optionally, the method further comprises:

[0036] In a case where the first mapping relationship is dynamically adjusted, the first mapping relationship is informed to the second TRP before the sweeping occasion of the front-haul beam arrives, so that the RIS parameter configuration of the second-type user beams is completed by the second TRP before the sweeping occasion of the front-haul beam arrives.

[0037] Optionally, the method further comprises:

[0038] In a case where the one beam determined by the centralized unit according to the beam indication reported by the terminal comprises a front-haul beam pointing to the second TRP, one or more transmission occasions are allocated to the front-haul beam, and a second mapping relationship between the transmission occasion of the front-haul beam and the second-type user beams is established;

[0039] The second mapping relationship is informed to the second TRP before the transmission occasion of the front-haul beam arrives, so that the RIS parameter configuration of the second-type user beams is completed by the second TRP before the transmission occasion of the front-haul beam arrives.

[0040] Optionally, the beam indication reported by the terminal comprises at least one of:

[0041] A sweeping occasion corresponding to a beam determined by the terminal according to beam sweeping;

[0042] A beam number corresponding to a beam determined by the terminal according to beam sweeping;

[0043] A signal sequence number corresponding to a beam determined by the terminal according to beam sweeping.

[0044] Embodiments of the present application also provide a beam transmission system, comprising: a centralized unit, at least one first transmission and reception point (TRP) and at least one second TRP, wherein:

[0045] The centralized unit is connected to the first TRP and the second TRP respectively;

[0046] The first TRP is configured to transmit at least one of a front-haul beam pointing to a second TRP and a first-type user beam pointing to a terminal;

[0047] The second TRP is configured to reflect or transmit the front-haul beam to generate a second-type user beam.

[0048] Optionally, the first TRP comprises radio frequency functions and antenna functions of a base station, and further comprises:

[0049] part or all of physical layer functions of the base station, and part or all of high layer functions of the base station; or

[0050] part or all of physical layer functions of the base station.

[0051] Optionally, the second TRP comprises a configurable intelligent surface RIS body and an RIS controller.

[0052] Optionally, an interface between the centralized unit and the first TRP is configured to transmit communication data, and transmit clock information, control information, management information and maintenance type information.

[0053] Optionally, an interface between the centralized unit and the second TRP is configured to transmit clock information, control information, management information and maintenance type information.

[0054] The control information comprises at least one of:

[0055] a first mapping relationship between a front-haul beam scanning occasion and a second-type user beam;

[0056] a second mapping relationship between a front-haul beam transmitting occasion and a second-type user beam.

[0057] Optionally, a deployment direction of the second TRP is determined based on at least one of:

[0058] an incident angle of a front-haul beam between the first TRP and the second TRP;

[0059] a coverage range of the second-type TRP.

[0060] Optionally, the deployment direction of the second TRP is a normal direction of the second TRP, and the normal direction of the second TRP is determined by:

[0061] determining a normal direction of the i-th iteration, i being a positive integer;

[0062] Assuming that the normal direction of the second TRP at the i-th iteration is deployed, the optimal solution of the second TRP is searched in MxN variables, the optimal solution of the second TRP satisfies the beam requirements of the second type of beams supported by the second TRP, and the beam requirements of the second type of beams supported by the second TRP are determined based on the coverage requirements of the second TRP; the M is the number of RIS units in the RIS main body included in the second TRP, and the N is the number of control bits of each RIS unit in the RIS main body included in the second TRP;

[0063] If the optimal solution of the second TRP is searched in MxN variables, the normal direction of the i-th iteration is taken as the normal direction of the second TRP.

[0064] If the optimal solution of the second TRP is not searched in MxN variables, the next iteration is performed until the optimal solution of the second TRP is searched.

[0065] Optionally, the beam requirements of the second type of beams include at least one of the following:

[0066] The number requirements, angle requirements and beam shape requirements.

[0067] Embodiments of the present application also provide a TRP, the TRP is a second TRP, comprising a memory, a transceiver and a processor, wherein:

[0068] The memory is used for storing computer programs; the transceiver is used for transceiving data under the control of the processor; and the processor is used for reading the computer programs in the memory and performing the following operations:

[0069] Before the transmission opportunity of the front-haul beam of the first transmission and reception point (TRP) arrives, the second TRP is adjusted according to the pre-acquired configurable intelligent surface (RIS) configuration parameter.

[0070] Optionally, the transmission opportunity of the front-haul beam is the scanning opportunity of the front-haul beam.

[0071] The second TRP is adjusted according to the pre-acquired configurable intelligent surface (RIS) configuration parameter before the transmission opportunity of the front-haul beam of the first TRP arrives, including:

[0072] Before the scanning opportunity of the front-haul beam of the first TRP arrives, the RIS configuration parameter of the second type of user beams corresponding to the scanning opportunity is acquired according to the pre-determined first mapping relationship between the scanning opportunity of the front-haul beam and the second type of user beams, and the second TRP is adjusted according to the RIS configuration parameter.

[0073] Optionally, the first mapping relationship is a mapping relationship between a plurality of scanning occasions of the front-haul beam and a plurality of second-type user beams established before the start of the beam scanning phase, and each second-type user beam has at least one scanning occasion of the front-haul beam corresponding thereto; and the RIS configuration parameter is obtained by table lookup based on an incident direction of the front-haul beam and a beam direction of the second-type user beam.

[0074] Alternatively,

[0075] The first mapping relationship is a mapping relationship among a plurality of scanning occasions of the front-haul beam, a plurality of second-type user beams and RIS configuration parameters established before the start of the beam scanning phase, and each second-type user beam has at least one scanning occasion of the front-haul beam corresponding thereto.

[0076] Optionally, the front-haul beam is used to transmit a communication signal.

[0077] Before the transmission occasion of the front-haul beam of the first TRP arrives, the second TRP is adjusted according to the pre-acquired RIS configuration parameter, including:

[0078] Before the transmission occasion of the front-haul beam of the first TRP arrives, the RIS configuration parameter of the second-type user beam corresponding to the transmission occasion is acquired according to a second mapping relationship between the transmission occasion of the front-haul beam and the second-type user beam determined by the centralized unit, and the second TRP is adjusted according to the RIS configuration parameter.

[0079] Optionally, the second mapping relationship is a mapping relationship between one or more transmission occasions of the front-haul beam and one second-type user beam established before the communication signal is transmitted; and the RIS configuration parameter is obtained by table lookup based on an incident direction of the front-haul beam and a beam direction of the second-type user beam.

[0080] Alternatively

[0081] The second mapping relationship is a mapping relationship among one or more transmission occasions of the front-haul beam, one second-type user beam and RIS configuration parameters established before the communication signal is transmitted.

[0082] The embodiment of the application also provides a TRP, which is a first TRP, and the TRP comprises a memory, a transceiver and a processor, wherein:

[0083] The memory is used to store a computer program; the transceiver is used to transceive data under the control of the processor; and the processor is used to read the computer program in the memory and perform the following operations:

[0084] transmit the beam according to the determined beam transmission occasion, the beam comprising at least one of: a front-haul beam pointing to a second TRP, a first-type user beam pointing to a terminal.

[0085] Optionally, the transmitting the beam according to the determined beam transmission occasion comprises at least one of:

[0086] a plurality of beams for beam sweeping determined by the centralized unit, and the plurality of beams are transmitted in sequence according to a plurality of scanning occasions of the plurality of beams.

[0087] the beam for communication with the terminal determined by the centralized unit, and the beam is transmitted according to a transmission occasion of the beam.

[0088] The embodiment of the application further provides a centralized unit, comprising: a memory, a transceiver and a processor, wherein:

[0089] a memory for storing a computer program; a transceiver for transceiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations:

[0090] determining one or more beams, and allocating one or more transmission occasions for each beam, the beam comprising at least one of: a front-haul beam pointing to a second transmission-reception point (TRP), a first-type user beam pointing to a terminal;

[0091] indicating the beam and the transmission occasion of the beam to a first TRP uniquely corresponding to the beam according to a predetermined correspondence.

[0092] Optionally, the centralized unit determines one or more beams, and allocates one or more transmission occasions for each beam, comprising at least one of:

[0093] The centralized unit determines one or more beams according to beam sweeping, and allocates one or more scanning occasions for each beam, and the scanning occasions allocated to the beams mapped with different first TRPs are different.

[0094] The centralized unit determines one beam according to a beam indication reported by a terminal, and allocates one or more transmission occasions for the beam.

[0095] Optionally, in the case that the one or more beams determined by the centralized unit according to beam sweeping comprise a front-haul beam pointing to a second TRP, the scanning occasion of the front-haul beam is a scanning occasion allocated to the front-haul beam according to a first mapping relationship between the scanning occasion of the front-haul beam and a second-type user beam.

[0096] Optionally, the first mapping relationship between the front-haul beam scanning occasion and the second type of user beam is preconfigured or dynamically adjusted according to the beam direction and quantity of the second type of user beam.

[0097] Optionally, the processor is further configured to read a computer program in the memory and perform the following operations:

[0098] In the case that the first mapping relationship is dynamically adjusted, the second mapping relationship is informed to the second TRP before the scanning occasion of the front-haul beam arrives, so that the RIS parameter configuration of the second type of user beam is completed by the second TRP before the scanning occasion of the front-haul beam arrives.

[0099] Optionally, the processor is further configured to read a computer program in the memory and perform the following operations:

[0100] In the case that one beam determined by the centralized unit according to the beam indication reported by the terminal includes the front-haul beam pointing to the second TRP, one or more transmission occasions are allocated for the front-haul beam, and a second mapping relationship between the transmission occasion of the front-haul beam and the second type of user beam is established;

[0101] The second mapping relationship is informed to the second TRP before the transmission occasion of the front-haul beam arrives, so that the RIS parameter configuration of the second type of user beam is completed by the second TRP before the transmission occasion of the front-haul beam arrives.

[0102] Embodiments of the present application also provide a TRP, the TRP being a second TRP, comprising:

[0103] An adjusting unit is configured to adjust the second TRP according to pre-acquired RIS configuration parameters before the transmission occasion of the front-haul beam of a first transmission and reception point (TRP) arrives.

[0104] A generating unit is configured to reflect or transmit the front-haul beam by the second TRP when the transmission occasion of the front-haul beam arrives, so as to generate a second type of user beam corresponding to the transmission occasion of the front-haul beam.

[0105] Optionally, the transmission occasion of the front-haul beam is a scanning occasion of the front-haul beam.

[0106] The adjusting unit is configured to acquire RIS configuration parameters of a second type of user beam corresponding to the scanning occasion of the front-haul beam according to a first mapping relationship between the scanning occasion of the front-haul beam and the second type of user beam pre-determined by the first TRP before the scanning occasion of the front-haul beam of the first TRP arrives, and adjust the second TRP according to the RIS configuration parameters.

[0107] Optionally, the front-haul beam is used for transmitting a communication signal.

[0108] The adjustment unit is configured to, before a transmission time of the front-haul beam of the first TRP arrives, acquire, according to a second mapping relationship between the transmission time of the front-haul beam determined by the centralized unit and the second user beam of the second type, an RIS configuration parameter of the second user beam of the second type corresponding to the transmission time, and adjust the second TRP according to the RIS configuration parameter.

[0109] The embodiment of the application further provides a TRP, which is a first TRP, comprising:

[0110] The transmission unit is configured to transmit the beam according to the determined beam transmission time, wherein the beam comprises at least one of the following: a front-haul beam pointing to a second TRP, a first user beam of a first type pointing to a terminal.

[0111] Optionally, the transmission unit is configured to at least one of the following:

[0112] a plurality of beams for beam scanning determined by the centralized unit, and a plurality of scanning time instants of the plurality of beams are used to transmit the plurality of beams in sequence;

[0113] the beam for communication with the terminal determined by the centralized unit, and the beam is transmitted at a transmission time instant of the beam.

[0114] The embodiment of the application further provides a centralized unit, comprising:

[0115] The determination unit is configured to determine one or more beams, and allocate one or more transmission time instants to each beam, wherein the beam comprises at least one of the following: a front-haul beam pointing to a second transmission-reception point (TRP), a first user beam of a first type pointing to a terminal.

[0116] The indication unit is configured to indicate the beam and its transmission time instant to a first TRP corresponding to the beam uniquely according to a predetermined correspondence relationship.

[0117] The embodiment of the application further provides a processor-readable storage medium, which stores a computer program, wherein the computer program is used for causing the processor to execute the beam transmission method on the second TRP side provided by the embodiment of the application, or the computer program is used for causing the processor to execute the beam transmission method on the first TRP side provided by the embodiment of the application, or the computer program is used for causing the processor to execute the beam transmission method on the centralized unit side provided by the embodiment of the application.

[0118] In the embodiment of the present application, before the transmission opportunity of the front beam of the first TRP arrives, the second TRP is adjusted according to the pre-acquired RIS configuration parameter; when the transmission opportunity of the front beam arrives, the second TRP reflects or transmits the front beam to generate a second type of user beam corresponding to the transmission opportunity of the front beam. In this way, since the front beam of the first TRP is reflected or transmitted by the second TRP to generate a second type of user beam corresponding to the transmission opportunity of the front beam, the communication quality can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0119] Figure 1 is a structural schematic diagram of a network architecture applicable to the embodiment of the present application;

[0120] Figure 2 is a schematic diagram of beam transmission provided by the embodiment of the present application;

[0121] Figure 3 is another schematic diagram of beam transmission provided by the embodiment of the present application;

[0122] Figure 4 is a schematic diagram of RIS reflection provided by the embodiment of the present application;

[0123] Figure 5 is a schematic diagram of RIS transmission provided by the embodiment of the present application;

[0124] Figure 6 is a flowchart of a beam transmission method provided by the embodiment of the present application;

[0125] Figure 7 is a schematic diagram of a beam mapping relationship provided by the embodiment of the present application;

[0126] Figure 8 is a flowchart of another beam transmission method provided by the embodiment of the present application;

[0127] Figure 9 is a flowchart of another beam transmission method provided by the embodiment of the present application;

[0128] Figure 10 is a structural diagram of a beam transmission system provided by the embodiment of the present application;

[0129] Figure 11 is a structural diagram of a TRP provided by the embodiment of the present application;

[0130] Figure 12 is a structural diagram of another TRP provided by the embodiment of the present application;

[0131] Figure 13is a structure diagram of a centralized unit provided by an embodiment of the present application.

[0132] Figure 14 is a structure diagram of another TRP provided by an embodiment of the present application.

[0133] Figure 15 is a structure diagram of another TRP provided by an embodiment of the present application.

[0134] Figure 16 is a structure diagram of another centralized unit provided by an embodiment of the present application. DETAILED DESCRIPTION

[0135] In order to make the technical problems, technical solutions and advantages of the present application clearer, the following will be described in detail in conjunction with the accompanying drawings and specific embodiments.

[0136] In the embodiments of the present application, the term "and / or" describes the association relationship of the associated objects, which means that there can be three kinds of relationships, for example, A and / or B can represent the following three cases: A exists alone, A and B exist together, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after it.

[0137] In the embodiments of the present application, the term "a plurality of" means two or more, and other quantifiers are similar.

[0138] The technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0139] The embodiments of the present application provide a beam sending method, a TRP, a centralized unit and a storage medium to solve the problem of poor communication quality.

[0140] Among them, the method and the device are based on the same application concept. Since the principles of the method and the device for solving problems are similar, the implementation of the device and the method can be referred to each other, and the repeated parts will not be described again.

[0141] The technical solutions provided by the embodiments of the present application can be applied to various systems, especially 6G systems. For example, the applicable systems can be global system of mobile communication (GSM) system, code division multiple access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) general packet radio service (GPRS) system, long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD) system, long term evolution advanced (LTE-A) system, universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) system, 5G New Radio (NR) system, 6G system, etc. Among these various systems, there are terminal devices and network devices. The system can also include a core network part, such as an Evloved Packet System (EPS), a 5G system (5GS), etc.

[0142] Please refer to Figure 1 , Figure 1 is a structural schematic diagram of a network architecture to which the embodiments of the present application can be applied, as shown in Figure 1 , including a terminal 11, at least one first TRP 12, at least one second TRP 13, and a centralized unit 14.

[0143] In different systems, the names of the terminal device can also be different. For example, in the 5G system, the terminal device can be referred to as a user equipment (UE). The wireless terminal device can communicate with one or more core networks (CN) via a radio access network (RAN). The wireless terminal device can be a mobile terminal device, such as a mobile phone (or called "cellular" phone) and a computer with a mobile terminal device, for example, it can be a portable, pocket, handheld, computer built-in or vehicle-mounted mobile device, which exchanges language and / or data with the radio access network. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), Redcap terminals, low-power wide-area (LPWA) terminals, and the like. The wireless terminal device can also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile, a remote station, an access point, a remote terminal, an access terminal, a user terminal, a user agent, a user device, and the like. In the embodiments of the present application, it is not limited.

[0144] In this embodiment of the invention, in terms of the division of wireless communication functions, the first TRP12 generally includes the radio frequency and antenna functions of the base station, and may also include part of the physical layer, all of the physical layer, or even part of the higher layer functions of the base station; the centralized unit 14 includes the remaining wireless communication functions of the base station. Including some, all, or even some higher-layer functions in the first TRP12 can save on data transmission requirements between the centralized unit 14 and the first TRP12. For example, the physical layer can be divided into two parts according to the digital modulation process, and the physical layer functions containing digital modulation can be included in the first TRP12. In this way, the interface between the centralized unit 14 and the first TRP12 will transmit encoded information bits, which saves more transmission bandwidth than directly transmitting I and Q data. Alternatively, including the entire physical layer in the first TRP12 will allow the interface between the centralized unit 14 and the first TRP12 to transmit unencoded information bits, which saves more transmission bandwidth than encoded information bits. Furthermore, if some higher-layer functions, such as user plane functions, are included in the first TRP12, the transmission bandwidth of the interface between the centralized unit 14 and the first TRP12 will be further reduced.

[0145] In this embodiment of the invention, the first TRP12 can transmit a fronthaul beam pointing to the second TRP, and can also transmit a first-type user beam pointing to the terminal. For example, as Figure 2 As shown, the first TRP transmits the first type of user beam to the terminal. This scenario enables the network side to communicate with the terminal through the first type of user beam between the first TRP and the terminal. That is, the first type of user beam is directly generated and transmitted by the first TRP and points towards the terminal.

[0146] In this embodiment of the invention, the second TRP13 can reflect or transmit the fronthaul beam transmitted by the first TRP to generate a second type of user beam, which points to the terminal. For example: Figure 3 As shown, the first TRP12 transmits a forward beam to the second TRP13. The second TRP reflects or transmits the forward beam to generate a second type of user beam. This scenario enables communication via the forward beam between the first and second TRPs (the forward beam is directly generated and transmitted by the first TRP and points towards the second TRP) and the second type of user beam between the second TRP and the terminal (the second type of user beam is formed by the reflection or transmission of the forward beam through the second TRP and points towards the terminal).

[0147] In the embodiment of the present application, the centralized unit 14 is connected with the first TRP 12 and the second TRP 13 respectively, the interface between the first TRP 12 and the centralized unit 14 is mainly used for transmitting communication data, and the interface between the second TRP 13 and the centralized unit 14 does not transmit communication data. In addition, the first TRP 12 and the second TRP 13 can transmit clock, control, management and maintenance type information through the interface between them and the centralized unit 14. Since the interface between the second TRP 13 and the centralized unit 14 does not transmit communication data, the interface transmission bandwidth requirement will be much smaller than the interface between the first TRP 12 and the centralized unit 14, so that a lower cost solution can be used for deployment. The connection between the centralized unit 14 and the first TRP 12 and the second TRP 13 is a wired connection.

[0148] In the embodiment of the present application, the second TRP 13 can include an RIS body (or referred to as RIS) and an RIS controller, and the RIS can control the reflection or transmission direction of the incident wave.

[0149] One RIS can include a plurality of RIS units, and each RIS unit can independently change at least one of the phase, amplitude and frequency of the incident signal. As shown in FIG. 2, the wireless signal transmitted by a single antenna can be reflected by the RIS, and the phase, amplitude, etc. of the signal reflected on each RIS unit can be controlled, and a directional beam can be formed in space. Figure 4

[0150] In addition, the RIS also supports the transmission mode, that is, the incident signal is transmitted through the RIS, and the phase, amplitude, etc. of the signal transmitted on each RIS unit can be controlled, so as to form a directional beam in space, which can be as shown in FIG. 3. Figure 5

[0151] In the embodiment of the present application, when the wireless signal propagation between the first TRP and the terminal is blocked, the second TRP can be erected to change the propagation path of the wireless signal, so as to improve the wireless communication quality.

[0152] It should be noted that in the embodiment of the present application, the first TRP can also be referred to as a first type of TRP, and the second TRP can also be referred to as a second type of TRP, because the first TRP and the second TRP can be two types of different TRPs.

[0153] ​​In addition, in the embodiment, the network side and the terminal can each use one or more antennas for multi-input multi-output (MIMO) transmission, which can be single-user MIMO (SU-MIMO) or multiple-user MIMO (MU-MIMO). According to the form and number of root antenna combinations, MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, or can be diversity transmission, precoding transmission, or beamforming transmission, etc.

[0154] Please refer to Figure 6 , Figure 6 is a flowchart of a beam transmission method provided by the embodiment of the application, as shown in Figure 6 , the method comprises the following steps:

[0155] Step 601, before the transmission time of the front-haul beam of the first TRP arrives, the second TRP is adjusted according to the pre-acquired RIS configuration parameter.

[0156] Step 602, when the transmission time of the front-haul beam arrives, the second TRP reflects or transmits the front-haul beam to generate a second-type user beam corresponding to the transmission time of the front-haul beam.

[0157] As an optional implementation, the transmission time of the front-haul beam is a scanning time of the front-haul beam.

[0158] Before the transmission time of the front-haul beam of the first TRP arrives, the second TRP is adjusted according to the pre-acquired RIS configuration parameter, comprising:

[0159] Before the scanning time of the front-haul beam of the first TRP arrives, the second TRP acquires the RIS configuration parameter of the second-type user beam corresponding to the scanning time according to a pre-determined first mapping relationship between the scanning time of the front-haul beam and the second-type user beam, and adjusts the second TRP according to the RIS configuration parameter.

[0160] The first mapping relationship can be pre-configured before the scanning stage starts, and the mapping relationship between multiple scanning times of the front-haul beam and multiple second-type user beams can be configured to ensure that each second-type user beam has at least one corresponding front-haul beam scanning time. For example: Figure 7As shown, the first type of TRP #1 has beams 1 to N1, wherein beams 1 and 4 are front-haul beams, and the remaining beams are first type of user beams, beam 1 corresponds to 3 scanning occasions, which correspond to 3 second type of user beams of the second type of TRP #a respectively, and beam 4 corresponds to 2 scanning occasions, which correspond to 2 second type of user beams of the second type of TRP #c respectively.

[0161] In this embodiment, in the scanning phase, before the arrival of each scanning occasion, the second TRP obtains the RIS configuration parameters of the second type of user beam corresponding to the scanning occasion according to the first mapping relationship between the scanning occasions of the front-haul beam and the second type of user beam, and adjusts the second TRP according to the RIS configuration parameters; and when the scanning occasion of the front-haul beam arrives, the front-haul beam is reflected or transmitted to generate the second type of user beam corresponding to the scanning occasion.

[0162] Optionally, the first mapping relationship is a mapping relationship between a plurality of scanning occasions of the front-haul beam and a plurality of second type of user beams established before the start of the beam scanning phase, and each second type of user beam has at least one scanning occasion of the front-haul beam corresponding thereto; and the RIS configuration parameters are obtained by table lookup based on the incident direction of the front-haul beam and the beam direction of the second type of user beam.

[0163] The table lookup method can be to pre-acquire a mapping table of the incident direction of the front-haul beam, the second type of user beam (including the beam direction) and the RIS configuration parameters, which includes the mapping relationship between a plurality of incident directions of the front-haul beam, a plurality of second type of user beams (including the beam direction) and a plurality of RIS configuration parameters, so that after the scanning occasion of the front-haul beam and the second type of user beam corresponding thereto are determined, the corresponding RIS configuration parameters can be determined according to the incident direction of the front-haul beam and the beam direction of the second type of user beam.

[0164] Optionally, the first mapping relationship is a mapping relationship between a plurality of scanning occasions of the front-haul beam, a plurality of second type of user beams and RIS configuration parameters established before the start of the beam scanning phase, and each second type of user beam has at least one scanning occasion of the front-haul beam corresponding thereto.

[0165] In this embodiment, the above mapping relationship can be used to directly determine the RIS configuration parameters.

[0166] In the beam scanning phase, the front transmission beam and the second type of user beam jointly constitute a scanning beam. By using the first mapping relationship between the scanning time of the front transmission beam and the second type of user beam, the influence of whether the network side uses the second TRP on the terminal can be shielded, so as to reduce the complexity of the terminal. That is, the terminal only sees the scanning beams sent by the network side at different times, and does not know or need to know which TRP sends the scanning beams. For example, Figure 7 If the terminal explicitly feeds back to the network side that the beam at t5 is used, it means that the terminal selects to communicate with it through the second type of user beam, that is, the first type of TRP#1 uses beam 1 to send the front transmission beam, and the second type of TRP#a communicates with the terminal by reflection or transmission to generate beam a3. If the terminal explicitly feeds back to the network side that the beam at t8 is used, it means that the terminal selects to communicate with it through the first type of user beam, that is, the first type of TRP#1 uses beam 3 to directly send the first type of user beam to communicate with the terminal.

[0167] Further, by using the first mapping relationship between the scanning time of the front transmission beam and the second type of user beam, the RIS configuration parameters can be saved in the second type of TRP locally, without the need for the centralized unit or other TRP to transfer the RIS configuration parameters, so as to save transmission resources.

[0168] The following first TRP is the first type of TRP, and the second TRP is the second type of TRP. The scanning phase of the beam sending method provided by the embodiment of the application is illustrated by a specific embodiment, which can specifically include the following steps:

[0169] Step 1, establishing a mapping relationship between the first type of TRP and the second type of TRP;

[0170] Among them, one first type of TRP can be mapped with zero, one or more second type of TRPs, and each second type of TRP must have a first type of TRP mapped therewith. Generally, this mapping relationship can be established when the TRP is deployed, and the beamforming parameters of the front transmission beam and the incident direction relative to the second type of TRP are determined according to the distance and orientation of each pair of first type of TRP and second type of TRP deployed in the mapping relationship.

[0171] Step 2: For a specific Type II TRP, calculate the RIS configuration parameters based on the known incident direction of the fronthaul beam relative to the Type II TRP and the beam directions of P (P≥1) Type II user beams, and record them in the mapping table. The RIS configuration parameters are used to change the RIS configuration so that the fronthaul beam, after reflection or transmission through the RIS, points to the corresponding Type II user beam direction. Generally, the Type II user beam directions are planned during TRP deployment, dividing the coverage area of ​​the Type II TRP into P parts, each corresponding to one of the P Type II user beam directions. Furthermore, the second-type user beam direction can be dynamically adjusted during system operation. For example, the system can adjust the number of second-type user beam directions based on the number of users carried by a certain second-type user beam direction. The second-type user beam with fewer users may be turned off or merged with other second-type user beams into a new second-type user beam. When dynamically adjusting the second-type user beam direction, the system (i.e., the centralized unit) can inform the second-type TRP of its desired second-type user beam direction (through communication between the system and the centralized unit). The second-type TRP determines the RIS configuration parameters by looking up a table based on the already defined incident direction of the fronthaul beam relative to the second-type TRP and the second-type user beam direction.

[0172] Step 3: Assign scan opportunities to Category I TRPs, and each scan opportunity can only be assigned to one Category I TRP. Each scan opportunity can transmit a forward beam (its corresponding scan opportunity is also called a forward beam scan opportunity) or transmit a Category I user beam, targeting a specific Category I TRP (e.g., ...). Figure 7 The terminal is assigned a Type 1 TRP #1. There are two Type 2 TRPs mapped to it: Type 2 TRP #a and Type 2 TRP #c. The total number of scan opportunities allocated to it is at least: the sum of the number of Type 2 user beams P of all Type 2 TRPs mapped to it + its own number of Type 1 user beams Q. The system informs the terminal of the allocated scan opportunities via signaling. For example, Figure 7 In the equation, P = 3 + 2 = 5, and Q = N1 - 2.

[0173] Step 4: For a specific Type II TRP, establish a mapping relationship between the fronthaul beam scanning timing and the Type II user beam generation timing, ensuring that each Type II user beam generation timing has a corresponding fronthaul beam scanning timing; wherein, the Type II user beam generation timing refers to the timing when the Type II TRP reflects or transmits the fronthaul beam to form the Type II user beam.

[0174] Step 5: The first type of TRP sends out scanning beams sequentially according to the beam scanning timing determined above.

[0175] In particular, before a specific front-haul beam scanning occasion arrives, the second type of TRP selects the RIS configuration parameter of the second type of user beam corresponding to the generation occasion according to the mapping relationship between the front-haul beam scanning occasion and the second type of user beam that has been determined, and adjusts the RIS; when the front-haul beam scanning occasion arrives, the second type of TRP forms a second type of user beam by reflecting or transmitting the front-haul beam through the RIS and propagating it to the terminal.

[0176] Step 6, the terminal selects a suitable beam by receiving a scanning beam in a scanning period and reports the corresponding beam scanning occasion to the network side to complete the beam scanning process.

[0177] Further, when reporting, the above beam scanning occasion can be replaced by other parameters that establish a unique mapping relationship with the beam scanning occasion, such as: reference signal number, reference signal sequence number, or beam number, etc. transmitted at the occasion.

[0178] Among them, the above-mentioned selection of a suitable beam can be achieved by receiving all scanning beams in a scanning period, and selecting one of the scanning beams with the maximum received power or signal-to-noise ratio as the suitable beam; or a threshold of received power or signal-to-noise ratio can be set in advance, and after receiving a scanning beam that meets the threshold in the scanning period, the scanning beam is selected as the suitable beam, and the scanning beam is not received. Among them, the above-mentioned completion of the beam scanning process can be the end of the scanning period for the network side, that is, the completion of the transmission of all scanning beams is marked, or the beam scanning process can be completed after receiving the suitable beam reported by the terminal.

[0179] In the above embodiment, the second TRP is clock-synchronized with the centralized unit. Further, in the above step 3, if the scanning occasion allocated to the front-haul beam is dynamic, the centralized unit can inform the corresponding second type of TRP of the allocation result (through the communication between it and the centralized unit). Further, in step 4, if the mapping relationship between the front-haul beam scanning occasion and the second type of user beam is dynamic, the centralized unit needs to inform the corresponding second type of TRP of the mapping relationship (through the communication between it and the centralized unit).

[0180] As an optional implementation, the front-haul beam is used to transmit a communication signal.

[0181] Before the transmission occasion of the front-haul beam of the first TRP arrives, the second TRP adjusts the second TRP according to the pre-acquired configurable intelligent surface RIS configuration parameter, including:

[0182] The second TRP obtains the RIS configuration parameter of the second user beam corresponding to the transmission occasion of the front beam according to the second mapping relationship between the transmission occasion of the front beam determined by the centralized unit and the second user beam before the transmission occasion of the first TRP arrives, and adjusts the second TRP according to the RIS configuration parameter.

[0183] The second mapping relationship can be preconfigured before the communication stage.

[0184] In this embodiment, the RIS configuration parameter corresponding to the transmission occasion can be determined through the second mapping relationship, so that the second TRP is configured according to the RIS configuration parameter, thereby generating the corresponding second user beam, and further improving the quality of the communication signal.

[0185] Optionally, the second mapping relationship is a mapping relationship between one or more transmission occasions of the front beam established before the communication signal is transmitted and a second user beam; and the RIS configuration parameter is obtained by looking up a table based on the incident direction of the front beam and the beam direction of the second user beam.

[0186] The table lookup method can refer to the table lookup method in the scanning stage, which is not described here.

[0187] Optionally, the second mapping relationship is a mapping relationship between one or more transmission occasions of the front beam established before the communication signal is transmitted, a second user beam and an RIS configuration parameter.

[0188] The RIS configuration parameter can be directly determined through the mapping relationship.

[0189] In the communication stage, if the terminal has a communication demand, the network side can preferentially use the beam corresponding to the beam scanning occasion reported by the terminal for communication. In particular, if the network side selects the second user beam to serve it, the centralized unit can inform the second TRP of the transmission occasion of the front beam and the corresponding second user beam number (i.e., the second mapping relationship) in advance to ensure that the RIS parameter configuration of the second TRP is completed before the front beam arrives. Further, since the RIS does not have frequency selectivity when reflecting or transmitting, the same moment of the user set using the same second user beam can be scheduled.

[0190] As an optional embodiment, the method further comprises:

[0191] Before the generation occasion of the front beam of the second TRP arrives, the second TRP adjusts the second TRP according to the pre-obtained configurable intelligent surface RIS configuration parameter.

[0192] When the generation time of the front-haul beam of the second TRP arrives, the second TRP reflects or transmits the second type of user beam sent by the terminal to generate a front-haul beam corresponding to the transmission time of the front-haul beam.

[0193] The front-haul beam is directed to the first TRP, realizing the transmission of the terminal beam to the first TRP through the second TRP to further improve the communication quality.

[0194] Optionally, the generation time of the front-haul beam of the second TRP is a scanning result reporting time of the front-haul beam of the second TRP.

[0195] Before the generation time of the front-haul beam of the second TRP arrives, the second TRP adjusts the second TRP according to the pre-acquired configurable intelligent surface RIS configuration parameter, including:

[0196] Before the scanning result reporting time of the front-haul beam of the second TRP arrives, the second TRP acquires the RIS configuration parameter of the second type of user beam corresponding to the scanning result reporting time of the front-haul beam according to the third mapping relationship between the scanning result reporting time of the front-haul beam and the second type of user beam, and adjusts the second TRP according to the RIS configuration parameter.

[0197] The third mapping relationship can be a mapping relationship between the scanning result reporting time of the front-haul beam and the second type of user beam established before the start of the beam scanning phase; the RIS configuration parameter is obtained by table lookup based on the incident direction of the second type of user beam and the beam direction of the front-haul beam.

[0198] Alternatively,

[0199] The third mapping relationship can be a mapping relationship between the scanning result reporting time of the front-haul beam, the second type of user beam, and the RIS configuration parameter established before the start of the beam scanning phase.

[0200] It should be noted that the second type of user beam here is the second type of user beam sent by the terminal.

[0201] Optionally, the front-haul beam is used to transmit communication signals.

[0202] Before the generation time of the front-haul beam of the second TRP arrives, the second TRP adjusts the second TRP according to the pre-acquired configurable intelligent surface RIS configuration parameter, including:

[0203] Before the generation time of the front-haul beam of the second TRP arrives, the second TRP obtains the RIS configuration parameter of the second user beam corresponding to the generation time according to the fourth mapping relationship between the generation time of the front-haul beam determined by the centralized unit and the second user beam, and adjusts the second TRP according to the RIS configuration parameter.

[0204] The fourth mapping relationship can be a mapping relationship between one or more generation times of the front-haul beam established before the communication signal is transmitted and a second user beam; and the RIS configuration parameter is obtained by looking up a table based on the incident direction of the second user beam and the beam direction of the front-haul beam.

[0205] Or

[0206] The second mapping relationship can be a mapping relationship between one or more generation times of the front-haul beam established before the communication signal is transmitted, a second user beam, and an RIS configuration parameter.

[0207] In this embodiment, the communication stage can be realized by the second TRP reflecting or transmitting the communication signal transmitted by the terminal to the first TRP, thereby improving the communication quality.

[0208] In the embodiment of the application, before the transmission time of the front-haul beam of the first TRP arrives, the second TRP adjusts the second TRP according to the pre-obtained RIS configuration parameter; when the transmission time of the front-haul beam arrives, the second TRP reflects or transmits the front-haul beam to generate a second user beam corresponding to the transmission time of the front-haul beam. In this way, by reflecting or transmitting the front-haul beam of the first TRP through the second TRP, a second user beam corresponding to the transmission time of the front-haul beam is generated, thereby improving the communication quality.

[0209] See Figure 8 , Figure 8 is another flowchart of a beam transmission method provided by the embodiment of the application, as shown in Figure 8 , comprising the following steps:

[0210] Step 801, the first TRP transmits the beam according to the determined beam transmission time, the beam comprising at least one of the following: a front-haul beam pointing to the second TRP, a first user beam pointing to the terminal.

[0211] The above beam transmission time can be determined by the centralized unit, of course, in some scenarios, it can also be determined by the first TRP itself.

[0212] Optionally, the first TRP transmits the beam according to the determined beam transmission occasion, including at least one of the following:

[0213] The first TRP transmits the plurality of beams for beam sweeping determined by the centralized unit and a plurality of scanning occasions of the plurality of beams in sequence.

[0214] The first TRP transmits the beam according to the beam determined by the centralized unit for communication with the terminal and the transmission occasion of the beam.

[0215] Optionally, the method further comprises:

[0216] Establishing a mapping relationship between the first TRP and the second TRP, so that one first TRP corresponds to zero, one or more second TRPs, and one second TRP corresponds to at least one first TRP.

[0217] According to the corresponding relationship of each pair of first TRP and second TRP in the mapping relationship, and the distance and orientation of the deployment of the first TRP and the second TRP, the front beam direction of the first TRP pointing to the second TRP is determined.

[0218] Wherein, the above determination of the front beam direction of the first TRP pointing to the second TRP can be to determine the second TRP corresponding to the first TRP, and to determine the front beam direction pointing to the second TRP according to the distance and orientation of the deployment of the first TRP and the second TRP.

[0219] It should be noted that the embodiment is used as an implementation of the corresponding first TRP in the embodiment shown in Figure 6 The specific implementation of the embodiment can be referred to the related description of the embodiment shown in Figure 6 In order to avoid repeated description, this embodiment will not be described again, and the same beneficial effects can also be achieved.

[0220] Please refer to Figure 9 , Figure 9 is a flowchart of another beam transmission method provided by the embodiment of the present application, as shown in Figure 9 , comprising the following steps:

[0221] Step 901, the centralized unit determines one or more beams, and allocates one or more transmission occasions for each beam, the beam including at least one of the following: a front beam pointing to a second transmission and reception TRP, a first type of user beam pointing to a terminal;

[0222] Step 902, the centralized unit indicates the beam and its transmission occasion to the first TRP uniquely corresponding to the beam according to the predetermined corresponding relationship.

[0223] The correspondence can be a correspondence between the beam and the TRP. For example, different beams and transmission opportunities are determined for different TRPs according to geographical positions of the different TRPs, thereby establishing the correspondence between the beam and the TRP.

[0224] The transmission opportunity determined by the centralized unit includes a scanning opportunity, and can also include a beam transmission opportunity in a communication phase. The centralized unit can allocate one or more transmission opportunities for each beam according to business requirements, scene requirements, and the like. For example, in order to enable a front-haul beam to form multiple directional second-type user beams, the front-haul beam can be allocated more transmission opportunities, and a mapping relationship can be established with different second-type user beams respectively.

[0225] Optionally, the centralized unit determines one or more beams, and allocates one or more transmission opportunities for each beam, including at least one of the following:

[0226] The centralized unit determines one or more beams according to beam scanning, and allocates one or more scanning opportunities for each beam, and the scanning opportunities allocated by the beams mapped with different first TRPs are different;

[0227] The centralized unit determines one beam according to a beam indication reported by a terminal, and allocates one or more transmission opportunities for the beam.

[0228] The beam indication reported by the terminal refers to a beam indication reported by the terminal to the network side in a beam scanning phase. The indication can include a scanning opportunity of the beam, and can also include information for indicating the beam, for example, a reference signal number, a reference signal sequence number, a beam number, and the like.

[0229] Optionally, in a case where the one or more beams determined by the centralized unit according to beam scanning include a front-haul beam pointing to a second TRP, the scanning opportunity of the front-haul beam is a scanning opportunity allocated for the front-haul beam according to a first mapping relationship between the scanning opportunity of the front-haul beam and a second-type user beam.

[0230] Optionally, the first mapping relationship between the scanning opportunity of the front-haul beam and the second-type user beam is preconfigured, or is dynamically adjusted according to a beam direction and a number of the second-type user beam.

[0231] The dynamic adjustment can be performed according to a number of the second-type user beams included in the second TRP and a number of users corresponding to the second-type user beam, for example, when the number of users corresponding to a certain second-type user beam is relatively small, the second-type user beam can be merged with other second-type user beams.

[0232] Through the dynamic adjustment, the number of the second-type user beams can be saved, resources are saved, and in the case that the load of a certain second-type user beam is too heavy, more second-type user beams can be generated to realize load balancing, thereby further improving the communication quality.

[0233] Optionally, the method further comprises:

[0234] In the case that the first mapping relationship is dynamically adjusted, the first mapping relationship is informed to the second TRP before the scanning occasion of the front-haul beam arrives, so that the RIS parameter configuration of the second-type user beam is completed by the second TRP before the scanning occasion of the front-haul beam arrives.

[0235] Optionally, the method further comprises:

[0236] In the case that one beam determined by the centralized unit according to the beam indication reported by the terminal comprises the front-haul beam of the second TRP, one or more transmission occasions are allocated for the front-haul beam, and a second mapping relationship between the transmission occasion of the front-haul beam and the second-type user beam is established;

[0237] The second mapping relationship is informed to the second TRP before the transmission occasion of the front-haul beam arrives, so that the RIS parameter configuration of the second-type user beam is completed by the second TRP before the transmission occasion of the front-haul beam arrives.

[0238] The beam indication reported by the terminal comprises at least one of the following:

[0239] The scanning occasion corresponding to the beam determined by the terminal according to the beam scanning;

[0240] The beam number corresponding to the beam determined by the terminal according to the beam scanning;

[0241] The signal sequence number corresponding to the beam determined by the terminal according to the beam scanning.

[0242] It should be noted that the embodiment is the implementation of the corresponding centralized unit in the embodiment shown in Figure 6 , and the specific implementation can be referred to the related description of the embodiment shown in Figure 6 , and the embodiment will not be described in detail to avoid repetition, and the same beneficial effects can be achieved.

[0243] Please refer to Figure 10 , Figure 10 is a structure diagram of a beam transmission system provided by the embodiment of the application, as shown in Figure 10As shown, the apparatus includes: a centralized unit 1001, at least one first TRP 1002, and at least one second TRP 1003, wherein:

[0244] The centralized unit 1001 is connected to the first TRP and the second TRP, respectively;

[0245] The first TRP 1002 is configured to transmit at least one of a front-haul beam pointing to the second TRP and a first-type user beam pointing to a terminal;

[0246] The second TRP 1003 is configured to reflect or transmit the front-haul beam to generate a second-type user beam.

[0247] The front-haul beam, the first-type user beam, and the second-type user beam can be understood as described above in the method embodiments, and will not be described here.

[0248] Optionally, the first TRP includes the radio frequency function and the antenna function of the base station, and further includes:

[0249] part or all of the physical layer function of the base station, and part or all of the high layer function of the base station; or

[0250] part or all of the physical layer function of the base station.

[0251] In this embodiment, the centralized unit can include other base station wireless communication functions that are not included in the first TRP.

[0252] Optionally, the second TRP includes an RIS body and an RIS controller.

[0253] Optionally, the interface between the centralized unit and the first TRP is configured to transmit communication data, and transmit clock information, control information, management information, and maintenance information.

[0254] The control information can be used to control the behavior of the first TRP, such as the scanning timing and the transmission timing of the beam.

[0255] The management information and the maintenance information are used to manage and maintain the first TRP.

[0256] Optionally, the interface between the centralized unit and the second TRP is configured to transmit clock information, control information, management information, and maintenance information.

[0257] The control information includes at least one of the following:

[0258] a first mapping relationship between the front-haul beam scanning timing and the second-type user beam;

[0259] A second mapping relationship between the front-haul beam transmission occasion and the second type of user beam.

[0260] The first mapping relationship and the second mapping relationship can be determined according to the description of the method embodiments, which will not be repeated here.

[0261] In the embodiments of the present application, the interface between the second TRP and the centralized unit can not transmit communication data. Since the interface between the second TRP and the centralized unit does not transmit communication data, the interface transmission bandwidth requirement will be much smaller than that of the interface between the first type of TRP and the centralized unit, thereby reducing the use cost and facilitating deployment.

[0262] Optionally, the deployment direction of the second TRP is determined based on at least one of the following:

[0263] The incident angle of the front-haul beam between the first TRP and the second TRP;

[0264] The coverage range of the second type of TRP.

[0265] It should be noted that in the present embodiment, the determination method of the deployment direction of the second TRP is not limited, and the deployment direction of the second TRP can be determined based on the at least one of the above according to actual scene requirements. For example, in actual deployment, the deployment direction of the second TRP, i.e. the direction of the normal direction of the second TRP, can be determined according to the incident angle (the angle with the normal direction of the RIS) of the front-haul beam between the first TRP and the second TRP, and the coverage range of the second type of TRP.

[0266] Optionally, the deployment direction of the second TRP is the normal direction of the second TRP, and the normal direction of the second TRP is determined by the following method:

[0267] Determine the normal direction of the i-th iteration, i is a positive integer;

[0268] Assume that the second TRP is deployed in the normal direction of the i-th iteration, search for the optimal solution of the second TRP in MxN variables, the optimal solution of the second TRP satisfies the beam requirement of the second type of beam supported by the second TRP, and the beam requirement of the second type of beam supported by the second TRP is determined based on the coverage requirement of the second TRP; M is the number of RIS units in the RIS body included by the second TRP, and N is the number of control bits of each RIS unit in the RIS body included by the second TRP;

[0269] If the optimal solution of the second TRP is found in the MxN variables, the normal direction of the i-th iteration is taken as the normal direction of the second TRP;

[0270] If the optimal solution of the second TRP is not found in the MxN variables, the next iteration is performed until the optimal solution of the second TRP is found.

[0271] If the second TRP is a reflective RIS, the normal direction can be placed between the incident angle and the direction of the center of the coverage range of the second TRP; if the second TRP is a transmissive RIS, the normal direction can be coincided with the direction of the center of the coverage range of the second TRP.

[0272] The above searching for the optimal solution of the second TRP in the MxN variables can find the optimal solution in the MxN variables according to the incident angle, the reflection angle or the transmission angle to meet the expected beam requirements.

[0273] The beam requirements of the second type of beam can include at least one of the following:

[0274] The number requirements, angle requirements and beam shape requirements.

[0275] The angle requirements can include reflection angle or transmission angle requirements, and the beam shape requirements can include at least one of the width requirements and the gain requirements.

[0276] In this embodiment, the front beam of the first TRP can generate more and better second type of user beams when reflected or transmitted by the second TRP, which can cover the coverage range of the second TRP through the above-mentioned loop process.

[0277] In the embodiment, the second TRP can realize a distributed antenna system constructed by an RIS, wherein the first TRP is a TRP with wireless signal generation, transmission and reception functions; the second TRP is a TRP with wireless signal reflection or transmission functions, and a plurality of TRPs are connected to a centralized unit to form a distributed antenna system.

[0278] Please refer to Figure 11 , Figure 11 is a structure diagram of a TRP provided by the embodiment, which is a second TRP, as shown in Figure 11 includes a memory 1120, a transceiver 1100 and a processor 1110:

[0279] The memory 1120 is used for storing computer programs; the transceiver 1100 is used for transceiving data under the control of the processor 1110; and the processor 1110 is used for reading the computer programs in the memory 1120 and performing the following operations:

[0280] Before the transmission opportunity of the front beam of the first TRP arrives, the second TRP is adjusted according to the pre-acquired configurable intelligent surface RIS configuration parameters.

[0281] wherein, in Figure 11 the bus architecture can include any number of interconnected buses and bridges, specifically, various circuitry linking the various circuits together, including one or more processors, represented by the processor 1110, and memory, represented by the memory 1120. The bus architecture can also link various other circuits, such as peripheral devices, voltage regulators, and power management circuitry, which are well known in the art and thus, are not further described herein. The bus interface provides an interface. The transceiver 1100 can be a plurality of elements, including a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium, including wireless channels, wired channels, optical cables, and the like. The user interface 1130 can also be a plurality of elements, including, but not limited to, a keypad, a display, a speaker, a microphone, a joystick, and the like, which can be external or internal to the apparatus, for different user devices.

[0282] The processor 1110 is responsible for managing the bus architecture and general processing, and the memory 1120 can store data used by the processor 1100 in executing operations.

[0283] Optionally, the processor 1110 can be a CPU (Central Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a CPLD (Complex Programmable Logic Device), and the processor can also adopt a multi-core architecture.

[0284] The processor executes any of the methods provided by the embodiments of the application according to the executable instructions obtained by calling the computer program stored in the memory. The processor and the memory can also be physically arranged separately.

[0285] Optionally, the transmission occasion of the front-haul beam is a scanning occasion of the front-haul beam.

[0286] Before the transmission occasion of the front-haul beam of the first TRP arrives, the second TRP is adjusted according to the pre-acquired configurable intelligent surface RIS configuration parameter, including:

[0287] Before the scanning occasion of the front-haul beam of the first TRP arrives, the RIS configuration parameter of the second type user beam corresponding to the scanning occasion is acquired according to the pre-determined first mapping relationship between the scanning occasion of the front-haul beam and the second type user beam, and the second TRP is adjusted according to the RIS configuration parameter.

[0288] Optionally, the first mapping relationship is a mapping relationship between a plurality of scanning occasions of the front-haul beam and a plurality of second-type user beams established before the start of the beam scanning phase, and each second-type user beam has at least one scanning occasion of the front-haul beam corresponding thereto; and the RIS configuration parameter is obtained by table lookup based on the incident direction of the front-haul beam and the beam direction of the second-type user beam.

[0289] Alternatively,

[0290] The first mapping relationship is a mapping relationship among a plurality of scanning occasions of the front-haul beam, a plurality of second-type user beams and RIS configuration parameters established before the start of the beam scanning phase, and each second-type user beam has at least one scanning occasion of the front-haul beam corresponding thereto.

[0291] Optionally, the front-haul beam is used to transmit a communication signal.

[0292] Before the transmission occasion of the front-haul beam of the first TRP arrives, the second TRP is adjusted according to the pre-acquired RIS configuration parameter, comprising:

[0293] Before the transmission occasion of the front-haul beam of the first TRP arrives, the RIS configuration parameter of the second-type user beam corresponding to the transmission occasion is obtained according to the second mapping relationship between the transmission occasion of the front-haul beam and the second-type user beam determined by the centralized unit, and the second TRP is adjusted according to the RIS configuration parameter.

[0294] Optionally, the second mapping relationship is a mapping relationship between one or more transmission occasions of the front-haul beam and one second-type user beam established before the communication signal is transmitted; and the RIS configuration parameter is obtained by table lookup based on the incident direction of the front-haul beam and the beam direction of the second-type user beam.

[0295] Alternatively

[0296] The second mapping relationship is a mapping relationship among one or more transmission occasions of the front-haul beam, one second-type user beam and RIS configuration parameters established before the communication signal is transmitted.

[0297] It should be noted that the above-mentioned second TRP provided by the embodiment of the present application can realize all the method steps realized by the method embodiment and achieve the same technical effects, and the same parts and beneficial effects in the embodiment as the method embodiment will not be described in detail.

[0298] Please refer to Figure 12 , Figure 12This is a structural diagram of a TRP provided in an embodiment of the present invention. The TRP is a first TRP, as shown below. Figure 12 As shown, it includes a memory 1220, a transceiver 1200, and a processor 1210:

[0299] The memory 1220 is used to store computer programs; the transceiver 1200 is used to send and receive data under the control of the processor 1210; the processor 1210 is used to read the computer program in the memory 1220 and perform the following operations:

[0300] The beam is transmitted according to a determined beam transmission timing, and the beam includes at least one of the following: a forward beam pointing to the second TRP and a first-type user beam pointing to the terminal.

[0301] Among them, Figure 12 In this context, the bus architecture can include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 1210 and memory represented by memory 1220 together. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides an interface. The transceiver 1200 can be multiple components, including transmitters and receivers, providing a unit for communicating with various other devices over a transmission medium, including wireless channels, wired channels, optical fibers, etc. For different user equipment, the user interface 1230 can also be an interface capable of connecting external or internal devices, including but not limited to keypads, displays, speakers, microphones, joysticks, etc.

[0302] Processor 1210 is responsible for managing the bus architecture and general processing, while memory 1220 can store data used by processor 1200 when performing operations.

[0303] Optionally, the processor 1210 can be a CPU (Central Processing Unit), ASIC (Application Specific Integrated Circuit), FPGA (Field-Programmable Gate Array), or CPLD (Complex Programmable Logic Device), and the processor can also adopt a multi-core architecture.

[0304] The processor executes any of the methods provided in the embodiments of the present invention according to the obtained executable instructions by calling a computer program stored in memory. The processor and memory may also be physically separated.

[0305] Optionally, the sending the beam according to the determined beam sending occasion comprises at least one of the following:

[0306] a plurality of beams for beam sweeping determined by the centralized unit, and the plurality of beams are sent in turn according to a plurality of sending occasions of the plurality of beams.

[0307] the beam for communicating with the terminal determined by the centralized unit, and the beam is sent according to a sending occasion of the beam.

[0308] It should be noted that the above first TRP provided by the embodiment of the present application can realize all the method steps realized by the method embodiment and achieve the same technical effects, and the same parts and beneficial effects of the method embodiment in the embodiment will not be described in detail.

[0309] Please refer to Figure 13 , Figure 13 is a structure diagram of a centralized unit provided by the embodiment of the present application, as shown in Figure 13 the memory 1320, the transceiver 1300 and the processor 1310:

[0310] The memory 1320 is used for storing a computer program; the transceiver 1300 is used for transceiving data under the control of the processor 1310; and the processor 1310 is used for reading the computer program in the memory 1320 and performing the following operations:

[0311] determining one or more beams, and allocating one or more sending occasions for each beam, the beam comprising at least one of the following: a front beam pointing to a second transmission and reception TRP, a first type of user beam pointing to a terminal;

[0312] indicating the beam and the sending occasion thereof to a first TRP uniquely corresponding to the beam according to a predetermined correspondence.

[0313] wherein, in Figure 13In one embodiment, the bus architecture can include any number of interconnecting buses and bridges, depending on the specific application of the processor 1310 and the memory 1320 that are linked together by the various circuits of the bus architecture, which can include a processor represented by the processor 1310 and a memory represented by the memory 1320. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators and power management circuits, which are well known in the art and thus, not further described herein. The bus interface provides an interface. The transceiver 1300 can be a plurality of elements, i.e., including a transmitter and a receiver, which provides a means for communicating with various other apparatus over a transmission medium, which includes a wireless channel, a wired channel, optical cable, etc. The user interface 1330 can also be an interface that can be externally or internally connected to the required device for different user equipment, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, etc.

[0314] The processor 1310 is responsible for managing the bus architecture and general processing, and the memory 1320 can store data used by the processor 1300 in performing operations.

[0315] Optionally, the processor 1310 can be a CPU (Central Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array) or a CPLD (Complex Programmable Logic Device), and the processor can also adopt a multi-core architecture.

[0316] The processor executes any of the methods provided by the embodiments of the application according to the executable instructions obtained by calling the computer program stored in the memory. The processor and the memory can also be physically arranged separately.

[0317] Optionally, the determining one or more beams and allocating one or more transmission occasions for each beam comprises at least one of:

[0318] determining one or more beams according to beam sweeping and allocating one or more scanning occasions for each beam, and the scanning occasions allocated for the beams mapped with different first TRPs are different;

[0319] determining one beam according to the beam indication reported by the terminal and allocating one or more transmission occasions for the beam.

[0320] Optionally, in a case where the one or more beams determined by the centralized unit according to the beam sweeping include a front-haul beam pointing to the second TRP, a sweeping occasion of the front-haul beam is a sweeping occasion allocated to the front-haul beam according to a first mapping relationship between the sweeping occasion of the front-haul beam and the second-type user beams.

[0321] Optionally, the first mapping relationship between the sweeping occasion of the front-haul beam and the second-type user beams is preconfigured or dynamically adjusted according to a beam direction and a quantity of the second-type user beams.

[0322] Optionally, the processor 1310 is further configured to read a computer program in the memory 1320 and perform the following operations:

[0323] In a case where the first mapping relationship is dynamically adjusted, the first mapping relationship is informed to the second TRP before the sweeping occasion of the front-haul beam arrives, so that the RIS parameter configuration of the second-type user beams is completed by the second TRP before the sweeping occasion of the front-haul beam arrives.

[0324] Optionally, the processor 1310 is further configured to read a computer program in the memory 1320 and perform the following operations:

[0325] In a case where the one beam determined by the centralized unit according to the beam indication reported by the terminal includes a front-haul beam pointing to the second TRP, one or more transmission occasions are allocated to the front-haul beam, and a second mapping relationship between the transmission occasion of the front-haul beam and the second-type user beams is established;

[0326] The second mapping relationship is informed to the second TRP before the transmission occasion of the front-haul beam arrives, so that the RIS parameter configuration of the second-type user beams is completed by the second TRP before the transmission occasion of the front-haul beam arrives.

[0327] Optionally, the beam indication reported by the terminal includes at least one of the following:

[0328] A sweeping occasion corresponding to a beam determined by the terminal according to beam sweeping;

[0329] A beam number corresponding to a beam determined by the terminal according to beam sweeping;

[0330] A signal sequence number corresponding to a beam determined by the terminal according to beam sweeping.

[0331] It should be noted that the above centralized unit provided by the embodiments of the present application can realize all the method steps realized by the above method embodiments and achieve the same technical effects, and thus the same parts and beneficial effects of the method embodiments in the embodiments will not be described in detail.

[0332] Please refer to Figure 14 , Figure 14 is another structure diagram of a TRP provided by an embodiment of the application, the TRP being a second TRP, as shown in Figure 14 TRP 1400 includes:

[0333] An adjustment unit 1401 is configured to, before a transmission occasion of a front-haul beam of a first transmission and reception point (TRP) arrives, adjust a second TRP according to pre-acquired configurable intelligent surface (RIS) configuration parameters of the second TRP.

[0334] A generation unit 1402 is configured to, when the transmission occasion of the front-haul beam arrives, reflect or transmit the front-haul beam to generate a second-type user beam corresponding to the transmission occasion of the front-haul beam.

[0335] Optionally, the transmission occasion of the front-haul beam is a scanning occasion of the front-haul beam.

[0336] The adjustment unit 1401 is configured to, before the scanning occasion of the front-haul beam of the first TRP arrives, acquire, according to a first mapping relationship between the scanning occasion of the front-haul beam and a second-type user beam pre-determined, RIS configuration parameters of the second-type user beam corresponding to the scanning occasion, and adjust the second TRP according to the RIS configuration parameters.

[0337] Optionally, the first mapping relationship is a mapping relationship between a plurality of scanning occasions of the front-haul beam and a plurality of second-type user beams established before a start of a beam scanning phase, and each second-type user beam has at least one scanning occasion of the front-haul beam corresponding thereto; and the RIS configuration parameters are obtained by table lookup based on an incident direction of the front-haul beam and a beam direction of the second-type user beam.

[0338] Alternatively,

[0339] The first mapping relationship is a mapping relationship between a plurality of scanning occasions of the front-haul beam, a plurality of second-type user beams, and RIS configuration parameters established before a start of a beam scanning phase, and each second-type user beam has at least one scanning occasion of the front-haul beam corresponding thereto.

[0340] Optionally, the front-haul beam is used to transmit a communication signal; and the adjustment unit 1401 is configured to, before a transmission occasion of the front-haul beam of the first TRP arrives, acquire, according to a second mapping relationship between the transmission occasion of the front-haul beam and a second-type user beam determined by a centralized unit, RIS configuration parameters of the second-type user beam corresponding to the transmission occasion, and adjust the second TRP according to the RIS configuration parameters.​​

[0341] Optionally, the second mapping relationship is a mapping relationship between one or more transmission opportunities of a front-haul beam established before transmitting the communication signal and a second-type user beam; and the RIS configuration parameter is obtained by table lookup based on an incident direction of the front-haul beam and a beam direction of the second-type user beam.

[0342] Or

[0343] The second mapping relationship is a mapping relationship among one or more transmission opportunities of a front-haul beam established before transmitting the communication signal, a second-type user beam, and an RIS configuration parameter.

[0344] It should be noted that the above-mentioned second TRP provided by the embodiment of the present application can realize all the method steps realized by the method embodiment and achieve the same technical effects, and the same parts and beneficial effects in the method embodiment will not be described in detail.

[0345] Please refer to Figure 15 , Figure 15 is another structure diagram of a TRP provided by the embodiment of the present application, which is a first TRP, as shown in Figure 15 The TRP 1500 comprises:

[0346] The sending unit 1501 is configured to send the beam according to the determined beam transmission opportunity, and the beam comprises at least one of the following: a front-haul beam pointing to a second TRP, a first-type user beam pointing to a terminal.

[0347] Optionally, the sending unit 1501 is configured to perform at least one of the following:

[0348] The first TRP sends the plurality of beams in turn according to a plurality of beams for beam scanning determined by the centralized unit and a plurality of scanning opportunities of the plurality of beams.

[0349] The first TRP sends the beam according to the beam for communication with the terminal determined by the centralized unit and a transmission opportunity of the beam.

[0350] It should be noted that the above-mentioned first TRP provided by the embodiment of the present application can realize all the method steps realized by the method embodiment and achieve the same technical effects, and the same parts and beneficial effects in the method embodiment will not be described in detail.

[0351] Please refer to Figure 16 , Figure 16 is another structure diagram of a centralized unit provided by the embodiment of the present application, as shown in Figure 16 The centralized unit 1600 comprises:

[0352] The determining unit 1601 is configured to determine one or more beams, and assign one or more transmission occasions to each beam, wherein the beams comprise at least one of the following: a fronthaul beam pointing to a second transmission and reception point (TRP), a first-type user beam pointing to a terminal.

[0353] The indicating unit 1602 is configured to indicate the beams and the transmission occasions thereof to the first TRP corresponding to the beams uniquely according to a predetermined correspondence.

[0354] Optionally, the determining unit 1601 is configured to perform at least one of the following:

[0355] determine one or more beams according to beam sweeping, and assign one or more sweeping occasions to each beam, and the sweeping occasions assigned to the beams mapped with different first TRPs are different;

[0356] determine one beam according to a beam indication reported by the terminal, and assign one or more transmission occasions to the beam.

[0357] Optionally, in a case where the one or more beams determined by the centralized unit according to beam sweeping comprise a fronthaul beam pointing to a second TRP, the sweeping occasion of the fronthaul beam is a sweeping occasion assigned to the fronthaul beam according to a first mapping relationship between the sweeping occasion of the fronthaul beam and a second-type user beam.

[0358] Optionally, the first mapping relationship between the sweeping occasion of the fronthaul beam and the second-type user beam is preconfigured, or dynamically adjusted according to a beam direction and a quantity of the second-type user beam.

[0359] Optionally, the centralized unit further comprises:

[0360] The first notifying unit is configured to, in a case where the first mapping relationship is dynamically adjusted, notify the second TRP of the first mapping relationship before the sweeping occasion of the fronthaul beam arrives, so that the second TRP has completed RIS parameter configuration of the second-type user beam before the sweeping occasion of the fronthaul beam arrives.

[0361] Optionally, the centralized unit further comprises:

[0362] The assigning unit is configured to, in a case where the one beam determined by the centralized unit according to the beam indication reported by the terminal comprises a fronthaul beam pointing to a second TRP, assign one or more transmission occasions to the fronthaul beam, and establish a second mapping relationship between the transmission occasion of the fronthaul beam and a second-type user beam;

[0363] A second notification unit is configured to notify the second TRP of the second mapping relationship before the transmission occasion of the front-haul beam arrives, so that the second TRP has completed the RIS parameter configuration of the second type of user beam before the transmission occasion of the front-haul beam arrives.

[0364] Optionally, the beam indication reported by the terminal comprises at least one of:

[0365] A scanning occasion corresponding to the beam determined by the terminal according to the beam scanning;

[0366] A beam number corresponding to the beam determined by the terminal according to the beam scanning;

[0367] A signal sequence number corresponding to the beam determined by the terminal according to the beam scanning.

[0368] It should be noted that the centralized unit provided by the embodiment of the present application can realize all the method steps realized by the method embodiment, and can achieve the same technical effects. The same parts and beneficial effects in the embodiment will not be described in detail.

[0369] It should be noted that the division of the unit in the embodiment of the present application is illustrative, and is only a logical function division. Another division mode can be used in actual implementation. In addition, each functional unit in each embodiment of the present application can be integrated in one processing unit, or each unit can be physically independent, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of a software functional unit.

[0370] When the integrated unit is realized in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solutions of the present application can be embodied in the form of a software product, which is stored in a storage medium and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various program code storage media.

[0371] The embodiment of the present application further provides a processor-readable storage medium, which stores a computer program, and the computer program is used for causing the processor to execute the second TRP side beam sending method provided by the embodiment of the present application, or the computer program is used for causing the processor to execute the first TRP side beam sending method provided by the embodiment of the present application, or the computer program is used for causing the processor to execute the centralized unit side beam sending method provided by the embodiment of the present application.

[0372] The processor-readable storage medium can be any available medium or data storage device that the processor can access, including but not limited to a magnetic storage (such as a floppy disk, a hard disk, a magnetic tape, a magneto-optical disk (MO), etc.), an optical storage (such as a CD, a DVD, a BD, a HVD, etc.), and a semiconductor memory (such as a ROM, an EPROM, an EEPROM, a NAND FLASH, a solid state disk (SSD)), etc.

[0373] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, or a computer program product. Therefore, the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to a magnetic disk storage and an optical storage, etc.) containing computer-usable program code.

[0374] The present application is described with reference to flowcharts and / or block diagrams of the method, device (system), and computer program product according to the embodiments of the present application. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, and the combination of flows and / or blocks in the flowcharts and / or block diagrams can be implemented by computer executable instructions. These computer executable instructions can be provided to a general purpose computer, a special purpose computer, an embedded processor, or other programmable data processing apparatus to produce a machine, so that the instructions executed by the computer or other programmable data processing apparatus produce the functions specified in the flowcharts and / or block diagrams. Figure 1 The functions specified in a flow or multiple flows and / or blocks Figure 1 The functions specified in a flow or multiple flows and / or blocks

[0375] These processor executable instructions can also be stored in a processor readable memory that can direct the computer or other programmable data processing apparatus to work in a specific manner, so that the instructions stored in the processor readable memory produce a manufactured product including instruction means, which realizes the functions specified in the flowcharts and / or block diagrams. Figure 1 The functions specified in a flow or multiple flows and / or blocks Figure 1 The functions specified in a flow or multiple flows and / or blocks

[0376] These processor-executable instructions can also be loaded onto a computer or other programmable data processing devices, so that a series of operational steps are performed on the computer or other programmable devices to generate a computer-implemented process such that the instructions executed on the computer or other programmable devices provide steps for implementing the functions specified in the flowchart block or blocks. Figure 1 one or more flowcharts and / or blocks Figure 1 one or more flowcharts and / or blocks

[0377] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A method of beam transmission, the method comprising: Comprising: Before the transmission occasion of the front-haul beam of the first transmission reception point (TRP) arrives, the second TRP adjusts the second TRP according to the pre-acquired configurable reconfigurable intelligent surface (RIS) configuration parameter; When the transmission occasion of the front-haul beam arrives, the second TRP reflects or transmits the front-haul beam to generate a second-type user beam corresponding to the transmission occasion of the front-haul beam; The transmission occasion of the front-haul beam is a scanning occasion of the front-haul beam; Before the transmission occasion of the front-haul beam of the first TRP arrives, the second TRP adjusts the second TRP according to the pre-acquired configurable reconfigurable intelligent surface (RIS) configuration parameter; Before the scanning occasion of the front-haul beam of the first TRP arrives, the second TRP acquires the RIS configuration parameter of the second-type user beam corresponding to the scanning occasion according to a pre-determined first mapping relationship between the scanning occasion of the front-haul beam and the second-type user beam, and adjusts the second TRP according to the RIS configuration parameter.

2. The method of claim 1, wherein, The first mapping relationship is a mapping relationship between a plurality of scanning occasions of the front-haul beam and a plurality of second-type user beams established before the beginning of the beam scanning phase, and each second-type user beam has at least one scanning occasion of the front-haul beam corresponding thereto; the RIS configuration parameter is obtained by table lookup based on the incident direction of the front-haul beam and the beam direction of the second-type user beam; Or, The first mapping relationship is a mapping relationship among a plurality of scanning occasions of the front-haul beam, a plurality of second-type user beams, and RIS configuration parameters established before the beginning of the beam scanning phase, and each second-type user beam has at least one scanning occasion of the front-haul beam corresponding thereto.

3. The method of claim 1, wherein, The front-haul beam is used to transmit a communication signal; Before the transmission occasion of the front-haul beam of the first TRP arrives, the second TRP adjusts the second TRP according to the pre-acquired configurable reconfigurable intelligent surface (RIS) configuration parameter; Before the transmission occasion of the front-haul beam of the first TRP arrives, the second TRP acquires the RIS configuration parameter of the second-type user beam corresponding to the transmission occasion according to a second mapping relationship between the transmission occasion of the front-haul beam and the second-type user beam determined by the centralized unit, and adjusts the second TRP according to the RIS configuration parameter.

4. The method of claim 3, wherein, The second mapping relationship is a mapping relationship between one or more transmission occasions of the front-haul beam and one second-type user beam established before the communication signal is transmitted; the RIS configuration parameter is obtained by table lookup based on the incident direction of the front-haul beam and the beam direction of the second-type user beam; Or The second mapping relationship is a mapping relationship among one or more transmission occasions of the front-haul beam, one second-type user beam, and RIS configuration parameters.

5. A method of beam transmission, the method comprising: Comprising: A first transmission reception point (TRP) transmits a beam according to a determined beam transmission occasion, the beam comprising: a front-haul beam pointing to a second TRP; The transmission occasion of the front transmission beam is a scanning occasion of the front transmission beam; the first TRP transmits the beam according to the determined beam transmission occasion, including that the first TRP transmits a plurality of front transmission beams for beam scanning determined by the centralized unit, and the plurality of front transmission beams are sequentially transmitted according to a plurality of scanning occasions of the plurality of front transmission beams; The scanning occasion of the front transmission beam is used for: before the scanning occasion of the front transmission beam arrives, the second TRP acquires the RIS configuration parameters of the second user beam corresponding to the scanning occasion according to a first mapping relationship between the scanning occasion and the second user beam, adjusts the second TRP according to the RIS configuration parameters, and reflects or transmits the front transmission beam at the scanning occasion to generate a second user beam corresponding to the transmission occasion of the front transmission beam.

6. The method of claim 5, wherein, The beam further includes a first user beam pointing to a terminal; The first TRP transmits the beam according to the determined beam transmission occasion, further including: The first TRP transmits the first user beam according to the first user beam for communication with the terminal determined by the centralized unit and a transmission occasion of the first user beam.

7. The method of claim 6, wherein, The method further includes: Establishing a mapping relationship between the first TRP and the second TRP, so that one first TRP corresponds to zero, one or multiple second TRPs, and one second TRP corresponds to at least one first TRP; According to the corresponding relationship of each pair of first TRP and second TRP in the mapping relationship between the first TRP and the second TRP, and the distance and direction of the deployment of the first TRP and the second TRP, the direction of the front transmission beam of the first TRP pointing to the second TRP is determined.

8. A method of beam transmission, the method comprising: Including: The centralized unit determines one or more beams, and allocates one or more transmission occasions for each beam, the beam including: a front transmission beam pointing to a second transmission and reception TRP; The centralized unit indicates the beam and its transmission occasion to the first TRP corresponding to the beam according to a predetermined corresponding relationship between the beam and the TRP; Wherein, the centralized unit determines one or more beams, and allocates one or more transmission occasions for each beam, including: The centralized unit determines one or more beams according to beam scanning, and allocates one or more scanning occasions for each beam, and the scanning occasions allocated to the beams mapped with different first TRPs are different; The scanning occasion of the front transmission beam is a scanning occasion allocated to the front transmission beam according to a first mapping relationship between the scanning occasion of the front transmission beam and a second user beam; Wherein, the method further includes: In the case that the first mapping relationship is dynamically adjusted, the first mapping relationship is informed to the second TRP before the scanning occasion of the front transmission beam arrives, so that the second TRP has completed the RIS parameter configuration of the second user beam before the scanning occasion of the front transmission beam arrives.

9. The method of claim 8, wherein, The beams further include a first type of user beam pointing to the terminal; the centralized unit determines one or more beams and allocates one or more transmission opportunities for each beam, and further includes: The centralized unit determines a first type of user beam according to the beam indication reported by the terminal, and allocates one or more transmission opportunities for the first type of user beam.

10. The method of claim 8, wherein, The first mapping relationship between the front-haul beam scanning opportunity and the second type of user beam is pre-configured or dynamically adjusted according to the beam direction and number of the second type of user beam.

11. The method of claim 9, wherein, The method further includes: In the case that the beam determined by the centralized unit according to the beam indication reported by the terminal includes a front-haul beam pointing to the second TRP, one or more transmission opportunities are allocated for the front-haul beam, and a second mapping relationship between the transmission opportunity of the front-haul beam and the second type of user beam is established; The second mapping relationship is informed to the second TRP before the transmission opportunity of the front-haul beam arrives, so that the RIS parameter configuration of the second type of user beam is completed by the second TRP before the transmission opportunity of the front-haul beam arrives.

12. The method of claim 11, wherein, The beam indication reported by the terminal includes at least one of: The scanning opportunity corresponding to the beam determined by the terminal according to beam scanning; The beam number corresponding to the beam determined by the terminal according to beam scanning; The signal sequence number corresponding to the beam determined by the terminal according to beam scanning.

13. A beam transmitting system, characterized by, It includes: A centralized unit, at least one first transmission and reception point (TRP), and at least one second TRP, wherein: The centralized unit is connected to the first TRP and the second TRP, respectively; The first TRP is configured to transmit a front-haul beam pointing to the second TRP; The second TRP is configured to adjust the second TRP according to pre-acquired configurable intelligent surface (RIS) configuration parameters before the transmission opportunity of the front-haul beam of the first transmission and reception point (TRP) arrives, reflect or transmit the front-haul beam when the transmission opportunity of the front-haul beam arrives, to generate a second type of user beam corresponding to the transmission opportunity of the front-haul beam; the transmission opportunity of the front-haul beam is the scanning opportunity of the front-haul beam; the adjustment of the second TRP according to the pre-acquired configurable intelligent surface (RIS) configuration parameters includes: acquiring the RIS configuration parameters of the second type of user beam corresponding to the scanning opportunity of the front-haul beam according to the first mapping relationship between the scanning opportunity of the front-haul beam and the second type of user beam before the scanning opportunity of the front-haul beam of the first TRP arrives, and adjusting the second TRP according to the RIS configuration parameters.

14. The system of claim 13, wherein, The first TRP includes the radio frequency function and antenna function of the base station, and further includes: Part or all of the physical layer function of the base station and part or all of the high layer function of the base station; or Part or all of the physical layer function of the base station.

15. The system of claim 13, wherein, The second TRP includes a configurable intelligent surface (RIS) main body and an RIS controller.

16. The system of claim 13, wherein, The interface between the centralized unit and the first TRP is used to transmit communication data, and transmit clock information, control information, management information, and maintenance type information.

17. The system of claim 13, wherein, The interface between the centralized unit and the second TRP is used to transmit clock information, control information, management information, and maintenance type information. The control information includes at least one of the following: A first mapping relationship between a front-haul beam scanning occasion and a second type of user beam; A second mapping relationship between a front-haul beam transmission occasion and a second type of user beam.

18. The system of any one of claims 13 to 17, wherein, The deployment direction of the second TRP is determined based on at least one of the following: An incident angle of a front-haul beam between the first TRP and the second TRP; A coverage range of the second TRP.

19. The system of claim 18, wherein, The deployment direction of the second TRP is a normal direction of the second TRP, and the normal direction of the second TRP is determined in the following manner: Determine the normal direction of the i-th iteration, i is a positive integer; Under the assumption that the second TRP is deployed in the normal direction of the i-th iteration, search for an optimal solution of the second TRP in MxN variables, wherein the optimal solution of the second TRP satisfies the beam requirements of the second type of beam supported by the second TRP, and the beam requirements of the second type of beam supported by the second TRP are determined based on the coverage requirements of the second TRP; M is the number of RIS units in the RIS main body included in the second TRP, and N is the number of control bits of each RIS unit in the RIS main body included in the second TRP; If the optimal solution of the second TRP is found in the MxN variables, the normal direction of the i-th iteration is taken as the normal direction of the second TRP; If the optimal solution of the second TRP is not found in the MxN variables, the next iteration is performed until the optimal solution of the second TRP is found.

20. The system of claim 19, wherein, The beam requirements of the second type of beam include at least one of the following: Number requirements, angle requirements, and beam shape requirements.

21. A transmission reception point (TRP), the TRP being a second TRP, characterized in that, It includes: A memory, a transceiver, and a processor, wherein: The memory is used to store computer programs; the transceiver is used to transceive data under the control of the processor; the processor is used to read the computer programs in the memory and perform the following operations: Before the transmission occasion of the front-haul beam of the first transmission and reception point (TRP) arrives, adjust the second TRP according to the pre-acquired configurable intelligent surface (RIS) configuration parameters; When the transmission occasion of the front-haul beam arrives, reflect or transmit the front-haul beam to generate a second type of user beam corresponding to the transmission occasion of the front-haul beam; The transmission occasion of the front-haul beam is a scanning occasion of the front-haul beam; Before the transmission occasion of the front-haul beam of the first TRP arrives, the adjustment of the second TRP according to the pre-acquired configurable intelligent surface (RIS) configuration parameters includes: Before the scanning occasion of the front-haul beam of the first TRP arrives, an RIS configuration parameter of a second type user beam corresponding to the scanning occasion is obtained according to a first mapping relationship between the scanning occasion of the front-haul beam and the second type user beam, and the second TRP is adjusted according to the RIS configuration parameter.

22. The TRP of claim 21, wherein, The first mapping relationship is a mapping relationship between a plurality of scanning occasions of the front-haul beam and a plurality of second type user beams established before the start of the beam scanning phase, and each second type user beam has at least one scanning occasion of the front-haul beam corresponding thereto; the RIS configuration parameter is obtained by table lookup based on the incident direction of the front-haul beam and the beam direction of the second type user beam. Or, The first mapping relationship is a mapping relationship between a plurality of scanning occasions of the front-haul beam, a plurality of second type user beams and RIS configuration parameters established before the start of the beam scanning phase, and each second type user beam has at least one scanning occasion of the front-haul beam corresponding thereto.

23. The TRP of claim 21, wherein, The front-haul beam is used to transmit a communication signal. Before the transmission occasion of the front-haul beam of the first TRP arrives, the second TRP is adjusted according to the pre-obtained RIS configuration parameter, including: Before the transmission occasion of the front-haul beam of the first TRP arrives, an RIS configuration parameter of a second type user beam corresponding to the transmission occasion is obtained according to a second mapping relationship between the transmission occasion of the front-haul beam and the second type user beam determined by the centralized unit, and the second TRP is adjusted according to the RIS configuration parameter.

24. The TRP of claim 23, wherein, The second mapping relationship is a mapping relationship between one or more transmission occasions of the front-haul beam and one second type user beam established before the communication signal is transmitted; the RIS configuration parameter is obtained by table lookup based on the incident direction of the front-haul beam and the beam direction of the second type user beam. Or The second mapping relationship is a mapping relationship between one or more transmission occasions of the front-haul beam, one second type user beam and RIS configuration parameters established before the communication signal is transmitted.

25. A transmission reception point (TRP), the TRP being a first TRP, characterized in that, Including: Memory, transceiver and processor, wherein: Memory for storing computer programs; transceiver for transceiving data under the control of the processor; processor for reading computer programs in the memory and performing the following operations: According to the determined beam transmission occasion, the beam is transmitted, the beam includes: a front-haul beam pointing to a second TRP; the transmission occasion of the front-haul beam is a scanning occasion of the front-haul beam; According to the determined beam transmission occasion, the beam is transmitted, including: a plurality of beams for beam scanning determined by the centralized unit, and the plurality of scanning occasions of the plurality of beams transmit the plurality of beams in turn. The scanning occasion of the front-haul beam is used for: before the scanning occasion of the front-haul beam arrives, the second TRP acquires, according to a first mapping relationship between the scanning occasion and a second-type user beam, RIS configuration parameters of the second-type user beam corresponding to the scanning occasion, adjusts the second TRP according to the RIS configuration parameters, and reflects or transmits the front-haul beam at the scanning occasion to generate a second-type user beam corresponding to a transmission occasion of the front-haul beam.

26. The TRP of claim 25, wherein, The beam further includes a first-type user beam pointing to the terminal; and the transmitting the beam according to the determined beam transmission occasion further includes: transmitting the first-type user beam according to the first-type user beam determined by the centralized unit and a transmission occasion of the first-type user beam.

27. A central unit, comprising: including: a memory, a transceiver and a processor, wherein: a memory for storing computer programs; a transceiver for transceiving data under the control of the processor; and a processor for reading computer programs in the memory and performing the following operations: determining one or more beams and allocating one or more transmission occasions for each beam, wherein the beams include a front-haul beam pointing to a second transmission-reception point (TRP); indicating the beams and their transmission occasions to a first TRP corresponding to the beams according to a predetermined correspondence between the beams and the TRPs; the centralized unit determines one or more beams and allocates one or more transmission occasions for each beam, including: the centralized unit determines one or more beams according to beam scanning and allocates one or more scanning occasions for each beam, and the scanning occasions allocated for the beams mapped with different first TRPs are different; the scanning occasion of the front-haul beam is a scanning occasion allocated for the front-haul beam according to a first mapping relationship between the scanning occasion of the front-haul beam and a second-type user beam; the processor is further configured to read the computer programs in the memory and perform the following operations: in the case of dynamic adjustment of the first mapping relationship, the first mapping relationship is informed to the second TRP before the scanning occasion of the front-haul beam arrives, so that the second TRP has completed the RIS parameter configuration of the second-type user beam before the scanning occasion of the front-haul beam arrives.

28. The centralized unit of claim 27, wherein, The beam further includes a first-type user beam pointing to the terminal; and the centralized unit determines one or more beams and allocates one or more transmission occasions for each beam, further including: The centralized unit determines a first-type user beam according to a beam indication reported by the terminal and allocates one or more transmission occasions for the first-type user beam.

29. The centralized unit of claim 27, wherein, The first mapping relationship between the scanning occasion of the front-haul beam and the second-type user beam is preconfigured or dynamically adjusted according to the beam direction and quantity of the second-type user beam.

30. The centralized unit of claim 27, wherein, the processor is further configured to read the computer programs in the memory and perform the following operations: In a case where one beam determined by the centralized unit according to the beam indication reported by the terminal includes a front-haul beam pointing to the second TRP, one or more transmission opportunities are allocated for the front-haul beam, and a second mapping relationship between the transmission opportunity of the front-haul beam and the second-type user beam is established; The second mapping relationship is informed to the second TRP before the transmission opportunity of the front-haul beam arrives, so that the RIS parameter configuration of the second-type user beam is completed by the second TRP before the transmission opportunity of the front-haul beam arrives.

31. A transmission reception point (TRP), the TRP being a second TRP, wherein the TRP is configured to: Comprise: An adjusting unit is configured to adjust the second TRP according to the pre-acquired configurable RIS configuration parameter before the transmission opportunity of the front-haul beam of the first transmission and reception point (TRP) arrives; A generating unit is configured to reflect or transmit the front-haul beam by the second TRP when the transmission opportunity of the front-haul beam arrives, to generate a second-type user beam corresponding to the transmission opportunity of the front-haul beam. The transmission opportunity of the front-haul beam is a scanning opportunity of the front-haul beam. The adjusting unit is configured to acquire the RIS configuration parameter of the second-type user beam corresponding to the scanning opportunity of the front-haul beam according to a first mapping relationship between the scanning opportunity of the front-haul beam and the second-type user beam determined in advance, and adjust the second TRP according to the RIS configuration parameter before the scanning opportunity of the front-haul beam of the first TRP arrives.

32. The TRP of claim 31, wherein, The front-haul beam is used to transmit a communication signal. The adjusting unit is configured to acquire the RIS configuration parameter of the second-type user beam corresponding to the transmission opportunity of the front-haul beam according to a second mapping relationship between the transmission opportunity of the front-haul beam and the second-type user beam determined by the centralized unit, and adjust the second TRP according to the RIS configuration parameter before the transmission opportunity of the front-haul beam of the first TRP arrives.

33. A transmission reception point (TRP), the TRP being a first TRP, characterized in that, Comprise: A sending unit is configured to send the beam according to the determined beam transmission opportunity, wherein the beam comprises a front-haul beam pointing to a second TRP; The sending unit is configured to send a plurality of front-haul beams for beam scanning and a plurality of scanning opportunities of the plurality of front-haul beams in sequence according to the plurality of front-haul beams and the plurality of scanning opportunities determined by the centralized unit. The scanning opportunity of the front-haul beam is used for the second TRP to acquire the RIS configuration parameter of the second-type user beam corresponding to the scanning opportunity of the front-haul beam according to a first mapping relationship between the scanning opportunity of the front-haul beam and the second-type user beam before the scanning opportunity of the front-haul beam arrives, and adjust the second TRP according to the RIS configuration parameter, and reflect or transmit the front-haul beam to generate a second-type user beam corresponding to the transmission opportunity of the front-haul beam when the scanning opportunity arrives.

34. The TRP of claim 33, wherein, The beam further comprises a first-type user beam pointing to a terminal; and the sending unit is further configured to: Send the first-type user beam according to the first-type user beam for communication with the terminal and a transmission opportunity of the first-type user beam determined by the centralized unit.

35. A central unit, comprising: Comprise: determining one or more beams, and allocating one or more transmission occasions for each beam, the beams comprising at least one of: a front-haul beam pointing to a second transmission and reception point (TRP), a first-type user beam pointing to a terminal; indicating the beams and their transmission occasions to the first TRP corresponding to the beams uniquely according to a predetermined correspondence relationship; wherein the determining unit is configured to determine one or more beams according to beam sweeping, and allocate one or more scanning occasions for each beam, and the scanning occasions allocated for the beams mapped with different first TRPs are different; the scanning occasion of the front-haul beam is a scanning occasion allocated for the front-haul beam according to a first mapping relationship between the scanning occasion of the front-haul beam and a second-type user beam; wherein the centralized unit further comprises: a first notifying unit configured to, in the case that the first mapping relationship is dynamically adjusted, notify the second TRP of the first mapping relationship before the scanning occasion of the front-haul beam arrives, so that the second TRP has completed the RIS parameter configuration of the second-type user beam before the scanning occasion of the front-haul beam arrives.

36. A processor-readable storage medium, comprising: The processor readable storage medium stores a computer program, the computer program being configured to make the processor execute the beam transmission method of any one of claims 1 to 4, or the computer program being configured to make the processor execute the beam transmission method of any one of claims 5 to 7, or the computer program being configured to make the processor execute the beam transmission method of any one of claims 8 to 12.

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