A wireless communication system node beam indication method and device

Abstract

The present application discloses a node beam indication method for a wireless communication system, wherein the wireless communication system includes a network device, an intermediate device and a user device. The service signal generated by the network device is received by the user device after being reflected by L subarrays in the intermediate device. The downlink control information includes: L subarray identifiers, L groups of control parameters and L reference signal resource identifiers; the correspondence between L reference signal resource identifiers and L groups of control parameters, or the correspondence between L reference signal resource identifiers and L subarray identifiers. The control parameters are respectively used to change the reflection characteristics of the L subarrays. The reference signal resources are respectively used for the reflected signals of the L subarrays. The present application also includes a device and a system for implementing the method. The present application solves the problem of how to implement beam control and selection in a mobile communication system with intermediate node facilities.

Description

Technical Field

[0001] The present application relates to the field of mobile communication technology, and in particular to a beam indication method and device for an intermediate device. Background Art

[0002] The intermediate device of the present application is based on a passive transmission device that uses reflection or transmission to control the propagation of electromagnetic waves in a communication channel to improve the performance of a communication system. For example, an intelligent metasurface (IRS) is based on the classical concept of a reconfigurable subarray. Specifically, an IRS is a metasurface composed of a large number of tiny elements that diffusely reflect incident signals in a controllable manner.

[0003] When metasurfaces are used in communication systems, the base station controls the phase and other parameters of the metasurface to better control the diffusely reflected incident signal to achieve controllable propagation of electromagnetic waves in the communication channel, thereby improving the coverage, capacity, and energy efficiency of the communication system. Metasurfaces can achieve controllable propagation of multiple phase changes. When deploying metasurfaces in wireless communication systems, it is necessary to design appropriate reflection coefficients to obtain the optimal performance gain.

[0004] The determination of the transmit beam and receive beam during the random access process is as follows: the terminal has achieved downlink synchronization before sending message 1, detected an SSB that meets the threshold, and obtained the resource configuration information sent by PRACH through SIB1 associated with the SSB.

[0005] The CSI-RS for beam management is used for beam measurement and selection. RRC signaling indicates one or more CSI-RS resource sets to the terminal. Each CSI-RS set contains one or more CSI-RS resources. After RRC is established, the beam information is indicated by TCIstate. Among them, TCI state indicates the QCL relationship between downlink reference signals. The reference signals of PDSCH / PDCCH and CSI-RS can be configured with TCI-state.

[0006] The multiple SRS resource sets used for beam management correspond to the transmission panel of the terminal. The SRS resources in the SRS resource set correspond to one beam (which can be the same or different). Multiple SRS resources in one resource set cannot be sent at the same time. Only one beam can be sent at the same time. SRS resources in different resource sets can be sent at the same time. When the SRS resources in one or more SRS resource sets are configured as different transmission beams, the terminal performs transmission beam scanning, and the base station can keep the receiving beam unchanged and perform uplink beam training. When the SRS resources in one or more SRS resource sets are configured as the same transmission beam, the terminal transmits the beam unchanged, and the base station can receive the beam scanning and perform uplink beam training.

[0007] An IRS is deployed in a system. Assuming that the AP transmits a fixed beam, the IRS is divided into subarrays to passively perform multi-beam reflection beamforming. Since the metasurface is a newly introduced entity in the communication system, the beam from the base station will change its direction when it passes through the metasurface. The metasurface can achieve controllable propagation of multiple phase changes, and the existing base station beam selection method is no longer applicable. Summary of the invention

[0008] The present application proposes a wireless communication system node beam indication method and device to solve the problem of how to achieve beam control and selection in a mobile communication system with intermediate devices.

[0009] In the first aspect, the embodiment of the present application proposes a wireless communication system node beam indication method, wherein the wireless communication system includes a network device, an intermediate device and a user device, the service signal generated by the network device is received by the user device after being reflected by L subarrays in the intermediate device, and the downlink control information sent by the network device to the intermediate device includes: L subarray identifiers, L groups of control parameters and L reference signal resource identifiers; the correspondence between the L reference signal resource identifiers and the L groups of control parameters, or the correspondence between the L reference signal resource identifiers and the L subarray identifiers. The control parameters are respectively used to change the reflection characteristics of the L subarrays; the reference signal resources are respectively used for the reflected signals of the L subarrays.

[0010] Preferably, the downlink control information is at least one of the following signaling: periodic high-layer signaling, semi-static high-layer signaling, and dynamic signaling.

[0011] Further, the reference signal is a downlink signal. According to the downlink control information, L downlink reference signal resources are respectively allocated to the L subarrays; and the L subarrays respectively adjust phase and / or amplitude characteristics according to the L groups of control parameters.

[0012] Alternatively, further, the reference signal is an uplink signal. According to the downlink control information, L uplink reference signal resources are respectively allocated to the L subarrays; and the L subarrays respectively adjust phase and / or amplitude characteristics according to the L groups of control parameters.

[0013] Preferably, in any one embodiment of the present application, the period and time slot of the reference signal resources for the intermediate device configured by the downlink control information are the same as the period and time slot of the reference signal resources configured by the user equipment.

[0014] Furthermore, the method described in any one of the embodiments of the first aspect of the present application is used in a network device and comprises the following steps:

[0015] The network device sends the downlink control information to the intermediate device;

[0016] L downlink reference signals corresponding to the L reference signal resource identifiers are sent or uplink reference signals are received in the same beam direction.

[0017] Preferably, the method further comprises the following steps:

[0018] The network device measures the received uplink reference signal;

[0019] The downlink control information is sent to the terminal, wherein the downlink control information further includes the best reference signal resource index.

[0020] Furthermore, the method described in any one of the embodiments of the first aspect of the present application is used in an intermediate device and comprises the following steps:

[0021] receiving the downlink control information;

[0022] According to the correspondence between the L reference signal resource identifiers and the L groups of control parameters, adjusting any subarray characteristic according to the lth group of control parameters to reflect the lth reference signal;

[0023] and / or,

[0024] According to the correspondence between the L reference signal resource identifiers and the L subarray identifiers; the lth reference signal is reflected by the lth subarray.

[0025] Preferably, the intermediate device receives L downlink reference signals corresponding to the L reference signal resource identifiers in the same beam direction, and sends the L downlink reference signals to L beam directions through L subarrays respectively, each beam direction corresponding to a downlink reference signal resource.

[0026] Preferably, the intermediate device receives L uplink reference signals corresponding to the L reference signal resource identifiers in the same beam direction, and sends the L uplink reference signals to L beam directions through L subarrays respectively, and each beam direction corresponds to an uplink reference signal resource.

[0027] Furthermore, the method described in any one of the embodiments of the first aspect of the present application is used for a user equipment and comprises the following steps:

[0028] sending L uplink reference signals corresponding to the L reference signal resource identifiers in the same beam direction, or,

[0029] Receive a downlink reference signal, measure the downlink reference signal, and send uplink control information including an optimal reference signal resource index.

[0030] In a second aspect, an embodiment of the present application proposes a network device for implementing the method described in any one of the embodiments of the first aspect of the present application. The network device comprises a network sending module and a network receiving module; the network sending module is used to send a downlink reference signal and also to send the downlink control information; the network receiving module is used to receive an uplink reference signal.

[0031] In a third aspect, an embodiment of the present application proposes an intermediate device for implementing the method described in any one of the embodiments of the first aspect of the present application, wherein the intermediate device comprises a node receiving module and a subarray; the node receiving module is used to receive the downlink control information; and the subarray is used to perform reflection processing on the reference signal.

[0032] In a fourth aspect, the present application further proposes a communication device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program, when executed by the processor, implements the steps of the method described in any one of the embodiments of the present application.

[0033] In a fifth aspect, the present application further proposes a computer-readable medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the method described in any embodiment of the present application are implemented.

[0034] In a sixth aspect, the present application also proposes a mobile communication system, comprising at least one network device as described in any embodiment of the present application and at least one intermediate device as described in any embodiment of the present application.

[0035] At least one of the above technical solutions adopted in the embodiments of the present application can achieve the following beneficial effects:

[0036] The present invention patent proposes a beam selection method in a metasurface system, which is used when the metasurface unit is divided into multiple sub-arrays, by controlling the control coefficient of each sub-array, to simultaneously reflect or transmit the same beam into multiple beams. The signaling sent by the base station control indicates the relationship between the CSI-RS resources for beam management and the sub-array ID or control coefficient of the metasurface, which is used for the terminal to measure and report the selected receiving beam to the base station; the relationship between the SRS resources for beam management sent by the base station control and the sub-array ID or control coefficient of the metasurface is used for the base station to measure and indicate the selected transmitting beam to the terminal. This method solves the problem of uplink and downlink beam selection when multiple sub-arrays of the metasurface perform phase adjustments in different directions at the same time. By adding the binding relationship between the reference signal resources indicated by the downlink control signaling and the sub-array ID / reflection coefficient, the intermediate device is instructed to adjust the phase coefficient of the reference signal resources according to the corresponding relationship, so that the terminal or base station can perform uplink and downlink beam measurement selection. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0038] Figure 1 This is a flow chart of an embodiment of a node beam indication method of a wireless communication system of the present application;

[0039] Figure 2 Schematic diagram of application scenario of downlink reference signal CSI-RS forwarding;

[0040] Figure 3 Schematic diagram of application scenario of uplink reference signal SRS forwarding;

[0041] Figure 4 is a schematic diagram of an embodiment of a network device;

[0042] Figure 5 is a schematic diagram of an embodiment of an intermediate device;

[0043] Figure 6 A schematic diagram of the structure of a network device according to another embodiment of the present invention;

[0044] Figure 7 is a block diagram of an intermediate device according to another embodiment of the present invention. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in combination with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0046] The technical solutions provided by various embodiments of the present application are described in detail below in conjunction with the accompanying drawings.

[0047] Figure 1 This is a flow chart of an embodiment of a node beam indication method of a wireless communication system of the present application.

[0048] In a first aspect, an embodiment of the present application proposes a node beam indication method for a wireless communication system, wherein the wireless communication system includes a network device, an intermediate device and a user device, and a service signal generated by the network device is reflected by L subarrays in the intermediate device and received by the user device.

[0049] It should be noted that the intermediate device is used to forward the signal of the network device or user equipment, which can be an IRS, an integrated access backhaul node (IAB), a radio frequency repeating node, etc. This application takes the target node IRS forwarding the signal of the network device as an example. The forwarded signal is any one of SSB, CSI-RS, PDCCH, and PDSCH. The intermediate device forwards the signal by transmission, reflection, or amplification forwarding. The adjustable parameters of the intermediate device are used to control the phase, amplitude, and polarization, etc.

[0050] Step 101: Downlink control information transmission process from a network device to an intermediate device, wherein the transmitted information includes a subarray identifier, a control parameter, a reference signal resource identifier and a corresponding relationship.

[0051] The first downlink control information is downlink control information sent by the network device to the intermediate device. When the method of the present application is used for the network device, the network device sends the first downlink control information; when the method of the present application is used for the intermediate device, the intermediate device receives the first downlink control information.

[0052] The first downlink control information includes: L subarray identifiers, L groups of control parameters and L reference signal resource identifiers; a correspondence between the L reference signal resource identifiers and the L groups of control parameters, or a correspondence between the L reference signal resource identifiers and the L subarray identifiers.

[0053] The control parameters are respectively used to change the reflection characteristics of the L sub-arrays; and the reference signal resources are respectively used for the reflection signals of the L sub-arrays.

[0054] Preferably, the first downlink control information is at least one of the following signaling: periodic high-layer signaling, semi-static high-layer signaling, and dynamic signaling.

[0055] Preferably, in any one embodiment of the present application, the first downlink control information is the period and time slot of the reference signal resource configured by the intermediate device, which is the same as the period and time slot of the reference signal resource configured by the user equipment.

[0056] Step 102: The intermediate device performs sub-array processing to enable each sub-array to respond to the set control parameters.

[0057] The L sub-arrays adjust phase and / or amplitude characteristics according to the L groups of control parameters respectively, and adjust the reflection characteristics of any sub-array according to the lth group of control parameters.

[0058] The intermediate device uses the control parameters to control the phase or amplitude of the L subarrays of the intermediate device according to the corresponding relationship, so as to forward the signal of the network device to the user device, or forward the signal of the user device to the network device.

[0059] Step 103: The intermediate device allocates reference signal resources to the subarrays so that each subarray corresponds to the set reference signal resources.

[0060] The method described in the present application is used for an intermediate device, wherein the intermediate device receives the first downlink control information, and according to the correspondence between the L reference signal resource identifiers and the L groups of control parameters, and / or the correspondence between the L reference signal resource identifiers and the L subarray identifiers, sends the lth reference signal from the network device to the user device after being reflected by the lth subarray, or sends the lth reference signal from the user device to the network device after being reflected by the lth subarray.

[0061] Step 103A, downlink reference signal transmission resource allocation. Further, the reference signal is a downlink signal. According to the first downlink control information, L downlink reference signal resources are allocated to the L subarrays respectively;

[0062] Step 103B, uplink reference signal transmission resource allocation. The reference signal is an uplink signal. According to the first downlink control information, L uplink reference signal resources are allocated to the L subarrays respectively; the L subarrays adjust phase and / or amplitude characteristics according to the L groups of control parameters respectively.

[0063] Step 104: transmit reference signals between the network device and the user equipment, send the downlink reference signal from the network device to the user equipment in the corresponding direction according to the resource correspondence, and / or send the uplink reference signal from the user equipment to the network device in the corresponding direction according to the resource correspondence.

[0064] The method of the present application is used for a network device: the network device sends or receives L reference signals corresponding to the L reference signal resource identifiers in the same beam direction.

[0065] The method of the present application is used for an intermediate device: the intermediate device receives L downlink reference signals corresponding to the L reference signal resource identifiers in the same beam direction, and sends the L downlink reference signals to the L beam directions through L subarrays or L control parameters respectively. That is, between the network device and the intermediate device, there are L downlink reference signal resources corresponding to each beam direction of the network device. Between the intermediate device and the user equipment, each beam direction corresponds to a downlink reference signal resource.

[0066] Alternatively, the intermediate device receives L uplink reference signals corresponding to the L reference signal resource identifiers in the same beam direction, and sends the L uplink reference signals to the L beam directions through L subarrays or L control parameters respectively, and each beam direction between the intermediate device and the network device corresponds to an uplink reference signal resource. At this time, between the intermediate device and the user equipment, there are L uplink reference signal resources corresponding to each beam direction of the user equipment.

[0067] Step 105: The network device and / or the user equipment performs reference signal measurement and feedback.

[0068] The method of the present application is used for a network device, wherein the network device measures a received uplink reference signal; and sends second downlink control information, which further includes an optimal reference signal resource index.

[0069] The second downlink control information is downlink control information sent by the network device to the terminal device.

[0070] The method of the present application is used for a user equipment, wherein the user equipment receives a downlink reference signal; measures the downlink reference signal, and sends uplink control information, which includes an optimal reference signal resource index.

[0071] According to steps 101 to 104, for example, the reference signal is CSI-RS, the intermediate device receives L CSI-RS resources in the same beam direction, and according to the association relationship between the CSI-RS resource identifier indicated by the downlink control information and the intermediate device subarray or control parameter, the lth CSI-RS resource identifier is adjusted with the lth group of control parameters or on the lth subarray, and the terminal measures the received CSI-RS resources for reporting CRI, indicating the CSI-RS resource identifier selected by the terminal.

[0072] For another example, the reference signal is SRS, and the terminal sends L SRS resources in the same beam direction. According to the association between the SRS resource identifier indicated by the downlink control information and the intermediate device subarray or control parameter, the lth SRS resource identifier is adjusted with the lth group of control parameters or on the lth subarray. The base station measures the received SRS resources for indicating the SRS to the terminal, indicating the SRS resource identifier selected by the base station.

[0073] Figure 2 A schematic diagram of an application scenario of downlink reference signal CSI-RS forwarding.

[0074] Embodiment 1: Taking the forwarded signal as CSI-RS as an example, the intermediate device is a reflection forwarder, and the adjustable parameters are used to control the phase. The intermediate device receives L CSI-RS resources in the same beam direction, and according to the association relationship between the CSI-RS resource identifier indicated by the downlink control information and the intermediate device subarray or control parameter, the lth CSI-RS resource identifier is implemented in any subarray with the lth group of control parameters or the radiation signal of the lth subarray uses the lth CSI-RS resource, and the terminal measures the received CSI-RS resource for reporting CRI, indicating the CSI-RS resource identifier selected by the terminal.

[0075] Specifically, the network device uses a beam scanning method to send the SSB beam set in sequence. The intermediate device, as a node covered by the basic beam, works in an SSB beam of the basic beam set, initiates random access in the SSB beam, and establishes an RRC connection. The network device configures the CSI-RS resource ID for the intermediate device through RRC signaling, and the base station is configured to send CSI-RS resource IDs 1-4 on the same beam. On this basis, considering that the intermediate device is divided into L subarrays, the network device controls the phase reflection coefficients of the L subarrays, and can simultaneously reflect the CSI-RS signal to different directions, define the array identifiers of the L subarrays of the intermediate device, and the base station configures the corresponding relationship between the CSI-RS resource and the identifier of the intermediate device subarray, ensuring that the CSI-RS resource identifier l is phase-adjusted and reflected through subarray l. Alternatively, the base station configures the relationship between the CSI-RS resource identifiers of the L intermediate devices and the corresponding L groups of control parameters, ensuring that the CSI-RS resource identifier l is phase-adjusted and reflected through the lth group of control parameters.

[0076] The terminal measures the different CSI-RS resource identifiers received and reports the CRI, indicating the resource index of the best CSI-RS, corresponding to the best downlink receiving beam.

[0077] Figure 3 A schematic diagram of an application scenario of uplink reference signal SRS forwarding.

[0078] Embodiment 2: Taking the forwarded signal as SRS as an example, the intermediate device is a reflection forwarder, and the adjustable parameters are used to control the phase. The terminal sends L SRS resources in the same beam direction, and according to the association relationship between the SRS resource identifier indicated by the downlink control information and the intermediate device subarray or control parameter, the lth SRS resource identifier is implemented in any subarray with the lth group of control parameters or corresponds to the lth SRS resource on the lth subarray, and the base station measures the received SRS resource for indicating the SRS to the terminal, indicating the SRS resource identifier selected by the base station.

[0079] Specifically, the network device uses a beam scanning method to send SSB beam sets in sequence. The intermediate device, as a node covered by the basic node, works in an SSB beam of the basic beam set, initiates random access in the SSB beam, and establishes an RRC connection. The network device configures the SRS resource ID for the intermediate device through RRC signaling, and the base station is configured to send SRS resource IDs 1-4 on the same beam. On this basis, considering that the intermediate device is divided into L subarrays, the network device controls the phase reflection coefficients of the L subarrays, and can simultaneously reflect the SRS signal to different directions, define the array identifiers of the L subarrays of the intermediate device, and the base station configures the corresponding relationship between the SRS resource and the identifier of the intermediate device subarray, ensuring that the SRS resource identifier l is phase-adjusted and reflected through subarray l. Alternatively, the base station configures the relationship between the SRS resource identifiers of the L intermediate devices and the corresponding L groups of control parameters, ensuring that the CSI-RS resource identifier l is phase-adjusted and reflected through the lth group of control parameters.

[0080] The base station measures different received SRS resource identifiers and indicates the SRI to the terminal through downlink signaling, indicating the resource index of the best SRS, corresponding to the best uplink transmission beam.

[0081] The downlink control information is periodic high-level signaling, and / or semi-static high-level signaling, and / or dynamic signaling.

[0082] The periodic high-level signaling is RRC signaling, which configures a sending period. Each sending period configures the association relationship between the CSI-RS / SRS resource identifier and the subarray identifier / control parameter identifier of the intermediate device. The sending period and the high-level signaling period are configured to be the same as the period of the terminal CSI-RS / SRS resource identifier.

[0083] After the semi-static high-level signaling is configured for the RRC cycle, the downlink control information indicated to the intermediate device needs to be activated or deactivated through MAC CE. The time slot for MAC CE activation and deactivation is the same as the time slot for MAC CE activation of the terminal CSI-RS / SRS resource identifier.

[0084] The dynamic signaling indication is downlink control information dynamically given to the intermediate device in each time slot, and the dynamic signaling and the dynamic indication of the time slot of the non-periodic CSI-RS / SRS resource triggering are the same.

[0085] Figure 4 A schematic diagram of an embodiment of a network device.

[0086] An embodiment of the present application also proposes a network device, using the method of any one of the embodiments of the present application, the network device is used to: send the first downlink control information; send or receive L reference signals corresponding to the L reference signal resource identifiers in the same beam direction.

[0087] The network device is further used for: measuring the received uplink reference signal; and sending second downlink control information, which further includes the best reference signal resource index.

[0088] To implement the above technical solution, the present application proposes a network device 400, which includes a network sending module 401, a network determining module 402, and a network receiving module 403.

[0089] The network sending module is used to send downlink control signaling (including the first downlink control information and the second downlink control information) and a downlink reference signal.

[0090] The network determination module is used to determine the control parameters and reference signal resources corresponding to the subarray identifier, and is also used to determine the best reference signal resource index.

[0091] The network receiving module is used to receive an uplink reference signal.

[0092] The specific methods for implementing the functions of the network sending module, the network determining module, and the network receiving module are as described in the various method embodiments of the present application and will not be repeated here.

[0093] The network device described in the present application may be a base station device or a network-side processing device connected to a base station, such as an AP.

[0094] Figure 5 is a schematic diagram of an embodiment of an intermediate device.

[0095] The present application also proposes an intermediate device, using the method of any one of the embodiments of the present application, the intermediate device is used to: receive the first downlink control information; according to the correspondence between the L reference signal resource identifiers and the L groups of control parameters, adjust any subarray characteristic according to the lth group of control parameters, and reflect the lth reference signal; and / or, according to the correspondence between the L reference signal resource identifiers and the L subarray identifiers; reflect the lth reference signal through the lth subarray.

[0096] Preferably, the intermediate device receives L downlink reference signals corresponding to the L reference signal resource identifiers in the same beam direction, and sends the L downlink reference signals to L beam directions through L subarrays respectively, each beam direction corresponding to a downlink reference signal resource.

[0097] Preferably, the intermediate device receives L uplink reference signals corresponding to the L reference signal resource identifiers in L beam directions, each beam direction corresponds to an uplink reference signal resource; and sends the L uplink reference signals to the same beam direction through L subarrays respectively.

[0098] To implement the above technical solution, the present application proposes an intermediate device 500 for controlling a passive transmission module 504 , which includes a node sending module 501 , a node determining module 502 , and a node receiving module 503 .

[0099] The node receiving module is used to receive the downlink control information; further, it can also be used to receive uplink control information.

[0100] The node sending module is used to forward the downlink control information and / or the uplink control information;

[0101] The passive transmission module includes L sub-arrays, which are used to reflect or transmit the downlink reference signal (from the network device) and the uplink reference signal (from the user equipment).

[0102] The node determination module is used to determine the control parameter and reference signal resource identifier corresponding to the subarray identifier according to the downlink control information, and adjust the phase / amplitude characteristics of the subarray so that the lth subarray corresponds to the lth reference signal resource.

[0103] The intermediate device described in the present application may refer to a mobile terminal connected to a passive transmission module (such as a smart reflective surface) or other equipment dedicated to controlling the passive transmission module.

[0104] Figure 6 A schematic diagram of the structure of a network device according to another embodiment of the present invention is shown. As shown in the figure, the network device 600 includes a processor 601, a wireless interface 602, and a memory 603. The wireless interface may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium. The wireless interface implements the communication function with the intermediate device, processes wireless signals by receiving and transmitting devices, and the data carried by the signals communicates with the memory or processor via an internal bus structure. The memory 603 contains a computer program for executing any one of the embodiments of the present application, and the computer program runs or changes on the processor 601. When the memory, processor, and wireless interface circuit are connected via a bus system. The bus system includes a data bus, a power bus, a control bus, and a status signal bus, which will not be described here.

[0105] Figure 7 700 is a block diagram of an intermediate device according to another embodiment of the present invention. The intermediate device 700 includes at least one processor 701, a memory 702, a network interface 703, and at least one shaping interface 704. The various components in the intermediate device 700 are coupled together through a bus system. The bus system is used to realize the connection and communication between these components. The bus system includes a data bus, a power bus, a control bus, and a status signal bus.

[0106] The shaping interface 704 is used to connect the surface unit of the passive transmission module (such as a metasurface device), convert the phase information in the control information into a driving signal for each surface unit, and realize the reflection (or refraction) signal adjustment of the passive transmission module.

[0107] The memory 702 stores executable modules or data structures. The memory may store operating systems and application programs. The operating system includes various system programs, such as a framework layer, a core library layer, a driver layer, etc., which are used to implement various basic services and process hardware-based tasks.

[0108] In an embodiment of the present invention, the memory 702 contains a computer program for executing any one of the embodiments of the present application, and the computer program runs or changes on the processor 701 .

[0109] The memory 702 includes a computer-readable storage medium, and the processor 701 reads the information in the memory 702 and completes the steps of the above method in combination with its hardware. Specifically, the computer-readable storage medium stores a computer program, and when the computer program is executed by the processor 701, each step of the method embodiment described in any of the above embodiments is implemented.

[0110] The processor 701 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the method of the present application can be completed by an integrated logic circuit of hardware in the processor 701 or an instruction in software form. The processor 701 may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a ready-made programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component. The methods, steps, and logic block diagrams disclosed in the embodiments of the present invention can be implemented or executed. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc. The steps of the method disclosed in conjunction with the embodiments of the present invention can be directly embodied as being executed by a hardware decoding processor, or executed by a combination of hardware and software modules in a decoding processor.

[0111] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of complete hardware embodiments, complete software embodiments, or embodiments combining software and hardware. In a typical configuration, the device of the present application includes one or more processors (CPU), an input / output user interface, a network interface, and a memory.

[0112] Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0113] Therefore, the present application also proposes a computer-readable medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the method described in any embodiment of the present application are implemented. For example, the memory 603, 702 of the present invention may include a non-permanent memory in a computer-readable medium, a random access memory (RAM) and / or a non-volatile memory, such as a read-only memory (ROM) or a flash RAM.

[0114] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0115] based on Figures 4 to 7 In addition to the embodiments of the present application, the present application also proposes a mobile communication system, comprising at least one embodiment of any intermediate device in the present application and at least one embodiment of any network device in the present application.

[0116] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0117] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A node beam indication method for a wireless communication system, wherein the wireless communication system comprises a network device, an intermediate device and a user device, and a service signal generated by the network device is reflected by L subarrays in the intermediate device and then received by the user device, characterized in that: The downlink control information sent by the network device to the intermediate device includes: L subarray identifiers, L groups of control parameters, and L reference signal resource identifiers; a correspondence between the L reference signal resource identifiers and the L groups of control parameters, or a correspondence between the L reference signal resource identifiers and the L subarray identifiers; The control parameters are used to change the reflection characteristics of the L sub-arrays respectively; The reference signal resources are respectively used for reflected signals of L subarrays.

2. The wireless communication system node beam indication method according to claim 1, characterized in that: The downlink control information is at least one of the following signaling: Periodic high-level signaling, semi-static high-level signaling, and dynamic signaling.

3. The wireless communication system node beam indication method according to claim 1, characterized in that: The reference signal is a downlink signal, Allocating L downlink reference signal resources to the L subarrays respectively according to the downlink control information; The L sub-arrays adjust phase and / or amplitude characteristics respectively according to the L groups of control parameters.

4. The wireless communication system node beam indication method according to claim 1, characterized in that: The reference signal is an uplink signal, Allocating L uplink reference signal resources to the L subarrays respectively according to the downlink control information; The L sub-arrays adjust phase and / or amplitude characteristics respectively according to the L groups of control parameters.

5. The wireless communication system node beam indication method according to claim 1, characterized in that: The period and time slot of the reference signal resource for the intermediate device configured by the downlink control information are the same as the period and time slot of the reference signal resource configured by the user equipment.

6. The method according to any one of claims 1 to 5, applied to a network device, characterized in that: The network device sends the downlink control information to the intermediate device; L downlink reference signals corresponding to the L reference signal resource identifiers are sent or uplink reference signals are received in the same beam direction.

7. The method according to claim 6, characterized in that The network device measures the received uplink reference signal; The downlink control information is sent to the terminal, wherein the downlink control information further includes the best reference signal resource index.

8. The method according to any one of claims 1 to 5, used in an intermediate device, characterized in that: The following steps are involved: receiving the downlink control information; According to the correspondence between the L reference signal resource identifiers and the L groups of control parameters, adjusting any subarray characteristic according to the lth group of control parameters to reflect the lth reference signal; and / or, According to the correspondence between the L reference signal resource identifiers and the L subarray identifiers; the lth reference signal is reflected by the lth subarray.

9. The method according to claim 8, characterized in that L downlink reference signals corresponding to the L reference signal resource identifiers are received in the same beam direction, and the L downlink reference signals are sent to L beam directions through L subarrays respectively, each beam direction corresponding to a downlink reference signal resource.

10. The method according to claim 8, characterized in that: L uplink reference signals corresponding to the L reference signal resource identifiers are received in the same beam direction, and the L uplink reference signals are sent to L beam directions through L subarrays respectively, each beam direction corresponding to an uplink reference signal resource.

11. The method according to any one of claims 1 to 5, applied to a user equipment, characterized in that: The following steps are involved: Sending L uplink reference signals corresponding to the L reference signal resource identifiers in the same beam direction; or Receive a downlink reference signal; measure the downlink reference signal, and send uplink control information including an optimal reference signal resource index.

12. A network device, used to implement the method according to any one of claims 1 to 6, characterized in that: The network device comprises a network sending module and a network receiving module; the network sending module is used to send a downlink reference signal and also used to send the downlink control information; the network receiving module is used to receive an uplink reference signal.

13. An intermediate device, used to implement the method according to any one of claims 1 to 4, 7 to 10, characterized in that: The intermediate device comprises a node receiving module and a subarray; the node receiving module is used to receive the downlink control information; and the subarray is used to perform reflection processing on the reference signal.

14. A communication device, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program, when executed by the processor, implements the steps of the method according to any one of claims 1 to 11.

15. A computer-readable medium storing a computer program, wherein the computer-readable medium implements the steps of the method according to any one of claims 1 to 9 when the computer program is executed by a processor.

16. A mobile communication system comprising at least one network device according to claim 12 and at least one intermediate device according to claim 13.

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