CN116647916A - Relay communication method and device and intelligent super-surface repeater - Google Patents

Relay communication method and device and intelligent super-surface repeater Download PDF

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Publication number
CN116647916A
CN116647916A CN202310913035.3A CN202310913035A CN116647916A CN 116647916 A CN116647916 A CN 116647916A CN 202310913035 A CN202310913035 A CN 202310913035A CN 116647916 A CN116647916 A CN 116647916A
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China
Prior art keywords
base station
host base
ris
array
relay
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Granted
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CN202310913035.3A
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Chinese (zh)
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CN116647916B (en
Inventor
丁宝国
杨波
黄勇
刘震
章秀银
唐杰
柯峰
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South China University of Technology SCUT
Comba Network Systems Co Ltd
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South China University of Technology SCUT
Comba Network Systems Co Ltd
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Priority to CN202310913035.3A priority Critical patent/CN116647916B/en
Publication of CN116647916A publication Critical patent/CN116647916A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0868—Hybrid systems, i.e. switching and combining
    • H04B7/088—Hybrid systems, i.e. switching and combining using beam selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations
    • H04B7/15507—Relay station based processing for cell extension or control of coverage area
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The application relates to a relay communication method, a relay communication device and an intelligent super-surface relay. The method comprises the following steps: receiving beam control information sent by the host base station, and determining reflection parameters of the intelligent super-surface array according to the beam control information; and controlling the intelligent super-surface array according to the reflection parameters so that the intelligent super-surface array can relay and forward between the host base station and the user terminal. By adopting the method, the power consumption and the cost of relay communication can be reduced.

Description

Relay communication method and device and intelligent super-surface repeater
Technical Field
The present application relates to the field of communications technologies, and in particular, to a relay communication method and apparatus, and an intelligent super-surface repeater.
Background
FR1 and FR2 frequency bands are defined in 5G NR, wherein FR1 represents a low-frequency band below 6GH, FR2 represents a millimeter wave frequency band above 24GHz, and compared with the low-frequency band, the millimeter wave frequency band has higher propagation loss, poor reflection and diffraction performance, and fast-descending propagation conditions, and cell coverage limitation is easy to cause, so that the traditional repeater cannot meet network coverage requirements.
In the prior art, network relay in the millimeter wave frequency band can be realized through NCR (Network-Controlled Repeater, network control repeater), and the NCR reduces unnecessary noise and interference amplification by adding SCI (Side Control Information ). However, NCR is usually an active relay, and there are problems that power consumption is high, cost is high, and uplink and downlink channels are irreversible.
Therefore, the current millimeter wave band relay communication technology has the problem of higher power consumption and higher cost.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a relay communication method, apparatus, communication device, computer-readable storage medium, and intelligent super-surface relay capable of reducing power consumption and cost.
In a first aspect, the present application provides a relay communication method, which is applied to an intelligent super-surface relay in an intelligent super-surface relay system, where the intelligent super-surface relay system further includes a host base station, and the intelligent super-surface relay is provided with an intelligent super-surface array; the relay communication method includes:
receiving beam control information sent by the host base station, and determining reflection parameters of the intelligent super-surface array according to the beam control information;
And controlling the intelligent super-surface array according to the reflection parameters so that the intelligent super-surface array can relay and forward between the host base station and the user terminal.
In one embodiment, the receiving the beam control information sent by the host base station includes:
receiving a forward link signal sent by the host base station through a forward link, and analyzing the forward link signal to obtain host base station information of the host base station;
sending an access request to the host base station through a control link according to the host base station information;
and receiving the beam control information sent by the host base station under the condition that the access request passes.
In one embodiment, the receiving the beam control information sent by the host base station, and determining the reflection parameter of the intelligent super-surface array according to the beam control information includes:
receiving a beam identifier sent by the host base station through the control link and a beam switching time corresponding to the beam identifier;
and determining reflection parameters of intelligent super-surface array elements in the intelligent super-surface array according to the beam identification and the beam switching time.
In one embodiment, the receiving the beam control information sent by the host base station, and determining the reflection parameter of the intelligent super-surface array according to the beam control information, further includes:
receiving downlink control information sent by the host base station through the forward link;
determining a beam identifier and a beam switching time corresponding to the beam identifier according to the downlink control information;
and determining reflection parameters of intelligent super-surface array elements in the intelligent super-surface array according to the beam identification and the beam switching time.
In one embodiment, the forward link uses a first frequency point for wireless transmission, and the control link uses a wired transmission or uses a second frequency point different from the first frequency point for wireless transmission.
In one embodiment, the smart super-surface array element of the smart super-surface array includes a first array element and a second array element, where the first array element is configured to determine the reflection parameter according to the beam control information, and the second array element is configured to perform relay forwarding between the host base station and the user terminal according to the reflection parameter.
In one embodiment, the smart super-surface array element of the smart super-surface array includes a third array element, where the third array element is configured to determine the reflection parameter according to the beam control information in response to a switching operation for a control switch, or relay between the host base station and the user terminal according to the reflection parameter.
In a second aspect, the present application further provides a relay communication device, which is applied to an intelligent super-surface relay in an intelligent super-surface relay system, where the intelligent super-surface relay system further includes a host base station, and the intelligent super-surface relay is provided with an intelligent super-surface array; the relay communication device includes:
the signal processing module is used for receiving the beam control information sent by the host base station and determining the reflection parameters of the intelligent super-surface array according to the beam control information;
and the array control module is used for controlling the intelligent super-surface array according to the reflection parameters so as to enable the intelligent super-surface array to relay and forward between the host base station and the user terminal.
In a third aspect, the present application further provides an intelligent super-surface repeater, where the intelligent super-surface repeater includes an RIS signal processing module, an RIS array element control module, and an RIS array;
the RIS signal processing module is used for receiving beam control information sent by a host base station, determining reflection parameters of the RIS array according to the beam control information, and sending the reflection parameters to the RIS array element control module;
The RIS array element control module is used for controlling the RIS array according to the received reflection parameters;
the RIS array is used for carrying out relay forwarding between the host base station and the user terminal.
In one embodiment, the RIS signal processing module is provided with a radio frequency front terminal module, a signal measurement sub-module, a signal interaction sub-module and a beam generation sub-module; the radio frequency front terminal module is connected with the signal measurement sub-module, the signal interaction sub-module and the RIS array, and the beam generation sub-module is connected with the RIS array element control module;
the radio frequency front terminal module is used for receiving and transmitting signals between the RIS signal processing module and the RIS array;
the signal measurement submodule is used for measuring forward link signals sent by the host base station through a forward link to obtain host base station information of the host base station;
the signal interaction sub-module is used for carrying out information interaction between the host base station and the RIS signal processing module in a control link according to the host base station information, and receiving the beam control information sent by the host base station;
the beam management sub-module is used for determining the reflection parameters of the RIS array according to the received beam control information.
In one embodiment, the forward link and the control link use the same frequency point for wireless transmission.
In one embodiment, the forward link uses a first frequency point for wireless transmission and the control link uses a wired transmission or uses a second frequency point different from the first frequency point for wireless transmission.
In a fourth aspect, the present application also provides a communication device. The communication device comprises a memory storing a computer program and a processor which when executing the computer program performs the steps of:
receiving beam control information sent by the host base station, and determining reflection parameters of the intelligent super-surface array according to the beam control information;
and controlling the intelligent super-surface array according to the reflection parameters so that the intelligent super-surface array can relay and forward between the host base station and the user terminal.
In a fifth aspect, the present application also provides a computer-readable storage medium. The computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of:
receiving beam control information sent by the host base station, and determining reflection parameters of the intelligent super-surface array according to the beam control information;
And controlling the intelligent super-surface array according to the reflection parameters so that the intelligent super-surface array can relay and forward between the host base station and the user terminal.
According to the relay communication method, the device, the communication equipment, the storage medium and the intelligent super-surface repeater, the reflection parameters of the intelligent super-surface array are determined according to the beam control information by receiving the beam control information sent by the host base station, and the intelligent super-surface array is controlled according to the reflection parameters so that the intelligent super-surface array performs relay forwarding between the host base station and the user terminal; the reflection parameters of the intelligent super-surface array can be determined according to the beam control information of the host base station, so that the intelligent super-surface array can determine beam direction according to the reflection parameters, downlink signals sent by the host base station are reflected to the user terminal according to the beam direction, and uplink signals sent by the user terminal are reflected to the host base station.
Drawings
FIG. 1 is an application environment diagram of a relay communication method in one embodiment;
FIG. 2 is a schematic diagram of a configuration of a smart subsurface repeater in one embodiment;
FIG. 3 is a flow diagram of a relay communication method in one embodiment;
FIG. 4 is a schematic diagram of a protocol stack architecture of an intelligent subsurface relay system in one embodiment;
FIG. 5 is a schematic diagram of a smart subsurface repeater in another embodiment;
FIG. 6 is a schematic diagram of a hardware architecture of a single channel of an N-channel RF front-end module in one embodiment;
FIG. 7 is a signaling interaction diagram of a host base station and an intelligent subsurface repeater in one embodiment;
FIG. 8 is a schematic diagram of forward link and control link non-sharing elements of an intelligent subsurface repeater in one embodiment;
FIG. 9 is a schematic diagram of a first array element according to one embodiment;
FIG. 10 is a schematic diagram of a third array element according to one embodiment;
FIG. 11 is a flow diagram of a RIS-based network relay communication method in one embodiment;
FIG. 12 is a flow diagram of a RIS-based network relay traffic channel in one embodiment;
FIG. 13 is a block diagram of a relay communication device in one embodiment;
FIG. 14 is a block diagram of a smart subsurface repeater in one embodiment;
Fig. 15 is an internal structural diagram of a communication device in one embodiment.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
With the development of mobile communication technology, an RIS (Reconfigurable Intelligent Surface, intelligent super surface) technology appears, and the RIS aims to serve as a reconfigurable spatial electromagnetic wave regulator, and intelligently reconstruct a wireless propagation environment between transceivers. However, no mature information transmission and communication device scheme is formed in the current RIS technology, and no relay communication method based on RIS is available.
The relay communication method provided by the embodiment of the application can be applied to an application environment shown in fig. 1. The intelligent super surface repeater 102 and the host base station 104 form an intelligent super surface repeater system, the intelligent super surface repeater 102 communicates with the host base station (donor gNB) 104 and the user terminal (UE) 106 through wireless links, wherein the wireless links between the intelligent super surface repeater 102 and the host base station 104 are repeater links, and the wireless links between the intelligent super surface repeater 102 and the user terminal 106 are access links, and the intelligent super surface repeater 102 can be but is not limited to various network repeaters implemented based on RIS technology.
FIG. 2 provides a schematic diagram of the structure of a RIS repeater (intelligent super face repeater). According to fig. 2, the RIS repeater may comprise an RIS signal processing module, an RIS element control module and an RIS array (intelligent super surface array), the RIS signal processing module being connected to the RIS element control module, the RIS element control module being connected to the RIS array. Wherein the RIS array may comprise N array elements, e.g. 64 array elements as shown in fig. 2; the RIS signal processing module can be used for measuring signals of the host base station and interacting with the host base station to realize the fusion networking coverage of the RIS relay and the base station; the RIS array element control module can control array elements of the RIS array to form beam pointing, for example, PIN diode control can be performed by adopting 1/2/3bit to control the phase of an array element reflection signal.
In one embodiment, as shown in fig. 3, a relay communication method is provided, and an intelligent super surface repeater applied to an intelligent super surface relay system is taken as an example and described, and the method includes the following steps:
step S210, receiving beam control information sent by a host base station, and determining reflection parameters of the intelligent super-surface array according to the beam control information.
The beam control information may be information for controlling uplink and downlink beams of the RIS relay, including, but not limited to, control information of downlink beams transmitted by the RIS relay to the user terminal, and control information of uplink beams transmitted by the RIS relay to the home base station.
The reflection parameter may be a parameter that an array element in the RIS array reflects a received signal, for example, a time and a phase of the reflection of the received signal by the array element.
In a specific implementation, the host base station may send beam control information to the intelligent super-surface repeater, and after the intelligent super-surface repeater receives the beam control information, the RIS signal processing module may determine reflection parameters of the array elements in the RIS array according to the beam control information, and transmit the determined reflection parameters to the RIS array element control module.
And step S220, controlling the intelligent super-surface array according to the reflection parameters so that the intelligent super-surface array performs relay forwarding between the host base station and the user terminal.
In a specific implementation, after receiving the reflection parameter, the RIS array element control module of the intelligent super-surface repeater can control the array elements of the RIS array according to the reflection parameter, so that the intelligent super-surface repeater can forward signals sent by the host base station to the user terminal and forward signals sent by the user terminal to the host base station, and relay communication between the host base station and the user terminal is realized.
For example, the reflection parameter may be phase information, and the RIS array element control module may control the phase of the reflection of the received signal by the array element in the RIS array according to the received phase information, so that the RIS repeater can form a downlink beam for forwarding downlink service data sent by the host base station to the user terminal, and an uplink beam for forwarding uplink service data sent by the user terminal to the host base station.
According to the relay communication method, the beam control information sent by the host base station is received, the reflection parameters of the intelligent super-surface array are determined according to the beam control information, and the intelligent super-surface array is controlled according to the reflection parameters, so that the intelligent super-surface array is relayed and forwarded between the host base station and the user terminal; the reflection parameters of the intelligent super-surface array can be determined according to the beam control information of the host base station, so that the intelligent super-surface array can determine beam direction according to the reflection parameters, downlink signals sent by the host base station are reflected to the user terminal according to the beam direction, and uplink signals sent by the user terminal are reflected to the host base station.
In one embodiment, as shown in FIG. 4, a protocol stack framework for an intelligent subsurface relay system is provided. According to fig. 4, the ris repeater may include an RF (radio frequency) layer and a PHY (physical) layer, and the host base station and the user terminal may each include an RF layer, a PHY layer, a MAC (medium access control) layer, an RLC (radio link control) layer, and an RRC (radio resource control) layer. The protocol stack architecture of the intelligent super surface relay system also comprises an F-Link (Forward-Link) service channel for receiving and transmitting service and a C-Link (Control-Link) Control channel for controlling information interaction. Specifically, in the RF layer, the host base station sends service data to the RIS relay through the F-Link1, and service data interaction is carried out between the RIS relay and the user terminal through the F-Link2 and the F-Link 3; at the PHY layer, control information is exchanged between the host base station and the RIS repeater via C-Link1 and C-Link 2.
In one embodiment, as shown in FIG. 5, a configuration of an intelligent subsurface repeater is provided. According to fig. 5, the RIS signal processing module in the RIS repeater includes an N-channel radio frequency front end module, a host base station F-Link signal measurement processing module, a host base station C-Link signal interaction processing module, and a beam generation and time management module.
The N-channel radio frequency front end module is connected with a specific array element of the RIS array and is used for receiving and transmitting signals.
The host base station F-Link signal measurement processing module is used for measuring F-Link signals, and comprises SSB (Synchronization Signal Block, synchronous signal block) beam intensity, base station system frame number timing information, frequency information and the like for measuring F-Link.
The host base station C-Link signal interaction processing module is used for carrying out interaction ON the C-Link signal to acquire information which is interactively communicated with the host base station, wherein the information comprises beam information, beam switching time information, ON-OFF (ON-OFF) information, RIS relay access host base station process and the like which are distributed to the RIS relay by the host base station. The beam information includes, but is not limited to, information of SSB beams or CSI-RS beams.
The host base station C-Link signal interaction processing module may be implemented by a conventional CPE (Customer Premise Equipment ) communication module.
The beam generation and time management module is used for generating corresponding RIS array element phase information and switching time points according to beam information and beam switching time information configured by the host base station, and sending the corresponding RIS array element phase information and the corresponding switching time points to the RIS array element control module so that the RIS array element control module can perform phase control and phase adjustment of the RIS array elements.
In one embodiment, as shown in fig. 6, a single channel hardware architecture for an N-channel radio frequency front end module is provided. According to fig. 6, a single channel hardware structure of the n-channel radio frequency front end module may include an RF module, an FPGA module, and a CPU module.
The RF module comprises a radio frequency link and ADC (Analog to Digital Converter, analog-to-digital conversion) hardware module, and is used for receiving antenna array element signals, converting the radio frequency signals into intermediate frequency signals and completing analog-to-digital conversion;
the FPGA module comprises a DDC (Digital Down Converters, digital down-conversion) module, a PSS (Primary Synchronization Signal, main synchronous signal) peak value searching module, a data storage module and a timing management module. The DDC module is used for carrying out downsampling processing on the digital signal, for example, the sampling rate is 122.88MHz, and the sampling is reduced to 30.72MHz; the PSS peak value searching module completes sliding correlation processing of the received signal and the local PSS sequence, acquires the PSS signal position of the received signal, and stores the signal of the corresponding SSB of the PSS; the data storage module is used for storing SSB signals; the timing management module is used for realizing the maintenance and generation of SFN (System Frame Number ), SF (SubFrame) and 10ms timing information; the FPGA module is used for carrying out initial timing synchronization and timing maintenance, keeping the time and frequency alignment of the RIS relay and the host base station, and providing timing support for the host base station to control the RIS relay beam switching.
The CPU module comprises a data storage module, an SSB analysis module, an SIB1/Six (system message) analysis module, a DCI (DownLink Control Information ) analysis module and a host base station information recording and processing module. The data storage module is used for storing the host base station information received by the RIS relay; the SSB analysis and SIB1/SIx analysis module respectively analyzes SSB and SIB1/SIx information of the host base station, so as to obtain the information such as time slot proportion, SSB beam information, SFN, SF timing, neighbor relation, host base station cell ID and the like of the host base station; the DCI analysis module is used for analyzing DCI scheduled by the host base station for the current RIS relay and controlling the time sequence switching relation of the current RIS relay through the DCI sent by the host base station; the host base station information recording and processing module obtains the corresponding host base station identity, the strongest SSB wave beam information and the SFN and SF timing information relation through the information obtained by the analysis module, and establishes connection with the host base station through a C-Link Link.
In one embodiment, as shown in fig. 7, a signaling interaction method between a host base station and an intelligent subsurface repeater is provided. According to fig. 7, the signaling interaction procedure between the host base station and the intelligent super surface repeater comprises the following steps:
Step S310, a host base station transmits a plurality of SSB wave beams, and when an RIS repeater is powered on to access a network, the RIS repeater analyzes the received SSB through a host base station F-Link signal measurement processing module to acquire timing and maximum SSB wave beam information;
step S320, the RIS repeater analyzes Sib1/Six through the host base station F-Link signal measurement processing module: acquiring information such as time slot proportion, cell ID (identification) and the like;
in step S330, the RIS repeater initiates connection with the home base station through the C-Link2 Link according to the resolved home base station identity, the strongest SSB beam information, and the information of supporting capabilities such as the own repeater beam capability, semi-static mode or dynamic mode. The host base station informs the RIS relay through the C-Link1 according to the information such as the number of the UE and the RIS relay in the current network, and distributes SSB (0~M) beam information, switching time information, DCI control resources and the like required by SSB beams transmitted by F-Link of the current RIS relay;
step S340, for the semi-static mode, the host base station issues control and configuration information through the C-Link1, including UE service beam information and switching time information required by the F_Link1 transmission service channel. The RIS relay periodically executes beam control according to the received semi-static beam configuration;
Step S350, for the dynamic mode, the host base station issues independent DCI resources of the RIS relay through the F-Link for indicating the wave beam and the switching time information. For example, the home base station transmits DCI information to the RIS relay in time slot n, instructs the RIS relay to switch to beam a in time slot n+1, and the RIS receives the DCI information and switches the corresponding beam to beam a in time slot n+1.
It should be noted that, the C-Link1/2 Link may be realized in a wireless or wired manner, and since the F-Link can analyze DCI in real time, the transmission control delay requirement of the C-Link1/2 Link is reduced, and the RIS repeater and the host base station interaction can be realized by using a basic delay of tens of ms.
It should be noted that, the beam in the signaling interaction method is not limited to the SSB beam, and may be, for example, a CSI-RS (Channel State Information-Reference Signal) beam with a relatively narrow beam width.
In one embodiment, the step S210 may specifically include: receiving a forward link signal sent by a host base station through a forward link, and analyzing the forward link signal to obtain host base station information of the host base station; sending an access request to the host base station through a control link according to the host base station information; and receiving the beam control information sent by the host base station under the condition that the access request passes.
Wherein the forward link signal may be a system message sent by the host base station to the intelligent super surface repeater, for example, SIB1/SIx (system information);
the home base station information may be, but is not limited to, a home base station broadcast beam identification, beam intensity, and air interface timing information.
In a specific implementation, the host base station sends a forward link signal to the RIS relay through a forward link, the RIS relay analyzes the received forward link to obtain host base station information, the RIS relay sends an access request to the host base station through a control link based on the host base station information, the host base station does not feed back a grant access message based on the received access request if the RIF relay is not granted access, otherwise, feeds back the grant access message through the control link, and then can send beam control information to the RIF relay, and the RIF relay receives the beam control message sent by the host base station under the condition of grant reception.
For example, through F-Link1, the RIS relay receives multiple SSB beams sent by the host base station, determines the strongest SSB beam therefrom, and the RIS relay may also receive the Sib1/Six sent by the host base station, parse host base station information such as a timeslot ratio, a cell ID, and the like from the received information, and initiate an access procedure with the host base station through a C-Link2 Link according to the parsed host base station identity, strongest SSB beam information, and information of supporting capabilities such as self-relay beam capabilities, semi-static modes, or dynamic modes, and the like, and the host base station allocates SSB beams and SSB beam switching times, or CSI-RS beam switching times, or beam control information such as DCI control resources, to the RIS relay according to the information such as the number of UEs in the current network, the number of RIS relays, and the like, and notifies the RIS relay through the C-Link 1.
In this embodiment, the host base station information of the host base station is obtained by receiving a forward link signal sent by the host base station through the forward link and analyzing the forward link signal; sending an access request to the host base station through a control link according to the host base station information; under the condition that the access request passes, the beam control information sent by the host base station is received, so that the RIS relay interacts with the host base station on the basis of analyzing the information of the host base station, the beam control information of relay communication is obtained, relay communication is realized on the basis of RIS, and the power consumption and cost of relay communication are reduced.
In one embodiment, the step S210 may specifically further include: receiving a beam identifier sent by a host base station through a control link and a beam switching moment corresponding to the beam identifier; and determining reflection parameters of intelligent super-surface array elements in the intelligent super-surface array according to the beam identification and the beam switching moment.
The beam identification may be an identification of an SSB beam or CSI-RS beam.
The beam switching time may be a switching time of an SSB beam or a CSI-RS beam.
Wherein, the intelligent super-surface array element can be an array element of the intelligent super-surface array.
In a semi-static mode, the host base station can send a beam identifier and corresponding beam switching time to the RIS relay through the C-Link1, and the RIS relay determines the phase of a reflection signal of an RIS array element (intelligent super-surface array element) according to the received beam identifier and performs beam switching according to the received beam switching time.
In this embodiment, the beam identifier sent by the host base station through the control link and the beam switching time corresponding to the beam identifier are received; according to the beam identification and the beam switching moment, reflection parameters of intelligent super-surface array elements in the intelligent super-surface array are determined, semi-static scheduling of the beams can be realized in the intelligent super-surface repeater, scheduling complexity is reduced, and scheduling resources are saved.
In one embodiment, the step S210 may specifically further include: receiving downlink control information sent by a host base station through a forward link; determining a beam identifier and a beam switching time corresponding to the beam identifier according to the downlink control information; and determining reflection parameters of intelligent super-surface array elements in the intelligent super-surface array according to the beam identification and the beam switching moment.
In a dynamic mode, a host base station can send DCI information to an RIS relay through an F-Link1, the RIS relay determines a beam identifier and corresponding beam switching time according to the received DCI information, determines the phase of a RIS array element reflection signal according to the determined beam identifier, and performs beam switching according to the received beam switching time.
In this embodiment, the host base station receives the downlink control information sent by the forward link; determining a beam identifier and a beam switching time corresponding to the beam identifier according to the downlink control information; according to the beam identification and the beam switching moment, the reflection parameters of the intelligent super-surface array elements in the intelligent super-surface array are determined, so that the dynamic scheduling of the beam can be realized in the intelligent super-surface repeater, the channel variation is adapted, and the error rate of the relay communication is reduced.
In one embodiment, the forward link uses a first frequency point for wireless transmission, and the control link uses a wired transmission or uses a second frequency point different from the first frequency point for wireless transmission.
The first frequency point and the second frequency point may be different frequency points of the millimeter wave frequency band.
In a specific implementation, the forward link between the host base station and the RIS repeater may use wireless transmission, and the control link between the host base station and the RIS repeater may use wired transmission, or use wireless transmission at a different frequency point from the forward link.
For example, according to fig. 5, the ris repeater can share array elements to implement F-Link1 measurement and signal interaction between C-Link1 and C-Link2, where the F-Link and C-Link channels use the same carrier frequency point to transmit and receive information, and have the same channel condition.
Fig. 8 provides a schematic diagram of a forward link and control link non-sharing element of an intelligent subsurface repeater. According to FIG. 8, the array elements receive F-Link1 signals, separate links are used for signal interaction between C-Link1 and C-Link2, the F-Link and C-Link use separate transmission channels, respectively, and the F-Link and C-Link signals do not share array elements. The signals of C-Link1 and C-Link2 may be transmitted in a wired manner (such as a network cable, an optical fiber, etc.), or may be transmitted by using a wireless communication channel with a different frequency from that of the signals of F-Link1, for example, F-Link uses F0 frequency point, C-Link uses F1 frequency point or a wired Link.
In this embodiment, the forward link uses the first frequency point to perform wireless transmission, and the control link uses the wired transmission or uses the second frequency point different from the first frequency point to perform wireless transmission, so that the requirement of the uplink array element vibrator can be reduced, and the cost of the relay communication system can be further reduced.
In one embodiment, the intelligent super-surface array element of the intelligent super-surface array includes a first array element and a second array element, where the first array element is used to determine a reflection parameter according to beam control information, and the second array element is used to relay between the host base station and the user terminal according to the reflection parameter.
The first array element and the second array element may be array elements with a single function in the RIS array.
In a specific implementation, a plurality of array elements can be selected from the intelligent super-surface array elements to serve as first array elements, and the rest of array elements are served as second array elements. The first array element can receive beam control information sent by the host base station, the beam control information is transmitted to the RIS signal processing module, reflection parameters are determined through the RIS signal processing module, the RIS signal processing module transmits the reflection parameters to the RIS array element control module, and the RIS array element control module controls the second array element according to the reflection parameters, so that the second array element can reflect the received beam, and relay forwarding between the host base station and the user terminal is achieved.
Fig. 9 provides a schematic diagram of a single function array element. According to fig. 9, the white array elements at four corners of the RIS array in fig. 5 or 8 may be used as first array elements, and the remaining array elements are used as second array elements, where the first array elements are connected with the host base station wireless signal receiving processing module and may be used for analyzing and interacting with the host base station signal, but not used for reflecting the host base station signal, and the second array elements may be used only for reflecting the host base station signal and not used for analyzing and interacting with the host base station signal. The host base station wireless signal receiving processing module can comprise a host base station F-Link signal measuring processing module and a host base station C-Link signal interaction processing module.
In this embodiment, the intelligent super-surface array element of the intelligent super-surface array includes the first array element and the second array element, the first array element is used for determining the reflection parameter according to the beam control information, and the second array element is used for performing relay forwarding between the host base station and the user terminal according to the reflection parameter, so that part of array elements of the RIS array only have the signal processing function, and part of array elements only have the signal reflection function, thereby ensuring the reliability of relay communication of the intelligent super-surface.
In an embodiment, the intelligent super-surface array element of the intelligent super-surface array includes a third array element, where the third array element is configured to determine, in response to a switching operation for the control switch, a reflection parameter according to the beam control information, or relay between the host base station and the user terminal according to the reflection parameter.
The third array element may be an array element having a plurality of functions in the RIS array.
In a specific implementation, a plurality of array elements can be selected from the intelligent super-surface array elements as third array elements, a control switch is configured for each third array element, the control switch is switched to a signal processing mode, then the third array elements can receive beam control information sent by a host base station, the beam control information is transmitted to an RIS signal processing module, reflection parameters are determined through the RIS signal processing module, the RIS signal processing module transmits the reflection parameters to the RIS array element control module, at the moment, the control switch is switched to the signal reflection mode, and then the RIS array element control module controls the third array elements according to the reflection parameters, so that the third array elements reflect received beams to realize relay forwarding between the host base station and a user terminal.
Fig. 10 provides a schematic diagram of a multi-functional array element. According to fig. 10, the white array elements at four corners of the RIS array in fig. 5 or 8 may be used as third array elements, and the third array elements may be used to analyze and interact with the host base station signal by switching the control switch, or be used to reflect the host base station signal, and the remaining array elements may be used as fourth array elements only to reflect the host base station signal. Each third array element is configured with a control switch as shown in fig. 10, when the third array element switches to P0, the third array element reflects the host base station signal with 0 phase, when the third array element switches to P1, the third array element reflects the host base station with Ɵ phase, wherein Ɵ is determined by surface array hardware, and when the third array element switches to P2, the third array element receives the host base station wireless signal and is connected with the host base station wireless signal receiving processing module, and is directly used for measuring the host base station wireless signal.
In this embodiment, the intelligent super-surface array element of the intelligent super-surface array includes the third array element, and the third array element is configured to determine the reflection parameter according to the beam control information in response to the switching operation for the control switch, or perform relay forwarding between the host base station and the user terminal according to the reflection parameter, so that part of array elements of the RIS array have both signal processing and signal reflection functions, without reducing the number of beams of the relay communication, and ensure the transmission rate of the relay communication.
In order to facilitate a thorough understanding of embodiments of the present application by those skilled in the art, the following description will be provided in connection with a specific example.
FIG. 11 provides a flow chart of a RIS-based network relay communication method. According to fig. 11, the RIS-based network relay communication method may include the steps of:
step S410, the RIS-based network repeater performs signal measurement and control information interaction on the base station through the RIS signal processing module; as shown in fig. 2, the RIS-based network repeater includes three components, which are a surface array composed of N arrays, an RIS array element control module, and an RIS signal processing module, respectively;
the RIS signal processing module is used for measuring signals of the host base station and interacting with the host base station to realize fusion networking coverage based on the RIS network repeater and the base station. The host base station signal to be measured is the common channel of F-Link1 and the common channel of C-Link 1; the signals interacted with the host base station comprise C-Link1 of DL (downlink) and C-Link2 of UL (uplink); as shown in fig. 4, the protocol stack structure of the RIS-based network repeater includes an F-Link traffic channel for transceiving traffic and a C-Link control channel for controlling information interaction.
The RIS signal processing module comprises an N-channel radio frequency front end module, a host base station F-Link signal measurement processing module, a host base station C-Link signal interaction processing module and a beam generation and time management module; the RIS signal processing module comprises two implementation schemes, including:
scheme 1, sharing array elements of an array to realize F-Link1 measurement and signal interaction between C-Link1 and C-Link 2; as shown in fig. 5, the network repeater based on RIS uses an integrated scheme of measurement and communication interaction, and the F-Link and C-Link channels use the same carrier frequency point to transmit and receive information, and have the same channel condition.
The N-channel radio frequency front end module is responsible for signal receiving and transmitting with the specific array element of the RIS array, the array element and the frequency band of the RIS array are shared by the scheme, and the F-Link and the C-Link are transmitted by adopting common carrier frequency points. The N-channel radio frequency front-end module supports parallel processing of single or multiple radio frequency channels.
The host base station F-Link signal measurement processing module is responsible for F-Link signal measurement processing, and the signals comprise SSB beam intensity of the F-Link, base station system frame number timing information, frequency information and the like.
The host base station C-Link signal interaction processing module is responsible for carrying out C-Link signal interaction processing to acquire information which is interactively communicated with the host base station, such as SSB (SSB) and CSI-RS (channel State information-reference signal) beam information distributed to the RIS relay by the host base station, beam switching time information, ON-OFF (ON-OFF) information, a process of accessing the RIS relay into the host base station and the like; the host base station C-Link signal interaction processing module can be realized by adopting a traditional CPE communication module mode.
The beam generation and time management module is responsible for generating corresponding RIS array element phase information and switching time points aiming at beam information and switching time configured by the host base station, and controlling the RIS array element control module to perform phase control and adjustment.
In scheme 2, the array elements receive F-Link1 signals, and independent links are adopted to carry out signal communication processing on C-Link1 and C-Link 2. As shown in fig. 8, the F-Link and the C-Link of the RIS-based network repeater use independent transmission channels, respectively, and the signals of the F-Link and the C-Link do not share array elements. The scheme is favorable for reducing the requirement of UL array element vibrators, and further reduces the equipment cost.
The C-Link1 and C-Link2 signals can be transmitted in a wired mode (network cable, optical fiber, etc.), or can be transmitted by adopting a wireless communication channel with different frequency from the F-Link1 signal.
Fig. 12 provides a schematic flow diagram of an RIS-based network relay traffic channel. According to fig. 12, the service flow of the RIS-based network relay may include the following steps:
step S412, the network repeater based on RIS measures the signals of the host base station through the array elements used for measuring the signals of the host base station, wherein the measurement contents comprise the broadcast beam ID of the host base station, the intensity of each beam and the air interface timing (SFN, SF);
Step S414, the RIS-based network repeater interacts with the host base station in a wireless or wired mode through the host base station interaction module, wherein the interaction information comprises C-Link1, C-Link2, current repeater capability, time slot ratio, reserved beam of the current repeater and repeater beam switching time sequence;
step S416, the repeater controls the beam of the uplink and downlink time based on the information of the host base station, and controls the phase of the reflection array element through the RIS array element control module to realize the beam pointing of the host base station and the terminal.
Step S420, the RIS network repeater controls the UL/DL beam based on the control information issued by the host base station, and controls the phase of the reflective array element of the array through the RIS array element control module to realize the beam pointing of the host base station and the terminal.
The RIS array element control module is used for controlling the array elements on the surface, and the common control mode of the RIS surface adopts 1/2/3bit to carry out PIN tube control so as to realize the phase control of the array element reflection signals.
Wherein the array may comprise N array elements, wherein the surface array of N array elements has two embodiments, comprising:
in scheme 3, in the surface array, a part of array element multiplexing is used for reflecting signals of the host base station and measuring wireless signals of the host base station. As shown in fig. 2, white array elements at four corners of the array can be used to measure the base station signal; as shown in fig. 10, the white array element is connected with the switch module to select the phase of reflection or for measurement function, and when the switch module selects the measurement function, the switch module is connected with the host base station wireless signal receiving processing module.
Specifically, the array includes a control switch for selecting a phase reflection host base station signal with P0 being 0 and a phase reflection host base station with P1 being Ɵ, wherein Ɵ is determined by surface array hardware, and P2 is selected as a receiving host base station wireless signal and is connected with a host base station wireless signal receiving module for directly measuring the host base station wireless signal.
In scheme 4, in the surface array, the independent partial array elements are used for host base station wireless signal measurement, and are not used for reflecting host base station signals. As shown in fig. 9, the white array element is directly connected to the host base station wireless signal receiving processing module, and the array element is only used for measuring the signal issued by the base station.
Specifically, the array element for measurement is connected with the host base station wireless signal receiving module, and the reflection phase can not be controlled.
According to the RIS-based network relay communication method, the RIS surface array element, the RIS array element control unit and the RIS signal processing unit of the RIS-based network relay device are comprehensively considered, so that the low-cost and low-power-consumption passive network relay is realized, the RIS signal processing unit is used for carrying out signal measurement and control information interaction with the base station, the RIS array element control unit is used for controlling the array of the RIS surface antenna array to carry out measurement or reflection, the accurate coverage of wave beams is realized, and the purpose of enhancing the coverage of the host base station is achieved; meanwhile, an F-Link and C-Link separation scheme is provided, so that the RIS repeater can relay signals of the host base station at lower cost.
It should be understood that, although the steps in the flowcharts related to the embodiments described above are sequentially shown as indicated by arrows, these steps are not necessarily sequentially performed in the order indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in the flowcharts described in the above embodiments may include a plurality of steps or a plurality of stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of the steps or stages is not necessarily performed sequentially, but may be performed alternately or alternately with at least some of the other steps or stages.
Based on the same inventive concept, the embodiment of the application also provides a relay communication device and an intelligent super-surface relay for realizing the relay communication method. The implementation of the solutions provided by the relay communication device and the intelligent super-surface repeater is similar to the implementation described in the above method, so the specific limitations in the embodiments of the relay communication device and the intelligent super-surface repeater provided below may be referred to the above limitations of the relay communication method, and will not be repeated here.
In one embodiment, as shown in fig. 13, a relay communication device is provided, which is applied to an intelligent super-surface relay in an intelligent super-surface relay system, wherein the intelligent super-surface relay system further comprises a host base station, and the intelligent super-surface relay is provided with an intelligent super-surface array; the relay communication device includes: a signal processing module 610 and an array control module 620, wherein:
the signal processing module 610 is configured to receive beam control information sent by the host base station, and determine a reflection parameter of the intelligent super-surface array according to the beam control information;
and the array control module 620 is configured to control the intelligent super-surface array according to the reflection parameter, so that the intelligent super-surface array performs relay forwarding between the host base station and the user terminal.
In one embodiment, the signal processing module 610 is further configured to receive a forward link signal sent by the host base station through a forward link, and parse the forward link signal to obtain host base station information of the host base station; sending an access request to the host base station through a control link according to the host base station information; and receiving the beam control information sent by the host base station under the condition that the access request passes.
In an embodiment, the signal processing module 610 is further configured to receive a beam identifier sent by the home base station through the control link and a beam switching time corresponding to the beam identifier; and determining reflection parameters of intelligent super-surface array elements in the intelligent super-surface array according to the beam identification and the beam switching time.
In one embodiment, the signal processing module 610 is further configured to receive downlink control information sent by the host base station through the forward link; determining a beam identifier and a beam switching time corresponding to the beam identifier according to the downlink control information; and determining reflection parameters of intelligent super-surface array elements in the intelligent super-surface array according to the beam identification and the beam switching time.
In one embodiment, the forward link uses a first frequency point for wireless transmission, and the control link uses a wired transmission or uses a second frequency point different from the first frequency point for wireless transmission.
In one embodiment, the intelligent super-surface array element of the intelligent super-surface array includes a first array element and a second array element, where the first array element is used to determine the reflection parameter according to the beam control information, and the second array element is used to perform relay forwarding between the host base station and the user terminal according to the reflection parameter.
In one embodiment, the intelligent super-surface array element of the intelligent super-surface array includes a third array element, where the third array element is configured to determine the reflection parameter according to the beam control information in response to a switching operation for a control switch, or relay between the host base station and the user terminal according to the reflection parameter.
In one embodiment, as shown in FIG. 14, there is provided an intelligent super-surface repeater, comprising: an RIS signal processing module 710, an RIS element control module 720, and an RIS array 730, where:
the RIS signal processing module 710 is configured to receive beam control information sent by a host base station, determine a reflection parameter of the RIS array according to the beam control information, and send the reflection parameter to the RIS array element control module;
the RIS array element control module 720 is configured to control the RIS array according to the received reflection parameter;
the RIS array 730 is configured to perform relay forwarding between the home base station and the user terminal.
In one embodiment, the RIS signal processing module 710 is further configured to receive a forward link signal sent by the host base station through a forward link, and parse the forward link signal to obtain host base station information of the host base station; sending an access request to the host base station through a control link according to the host base station information; and receiving the beam control information sent by the host base station under the condition that the access request passes.
In one embodiment, the RIS signal processing module 710 is further configured to receive a beam identifier sent by the home base station through the control link and a beam switching time corresponding to the beam identifier; and determining reflection parameters of intelligent super-surface array elements in the intelligent super-surface array according to the beam identification and the beam switching time.
In one embodiment, the RIS signal processing module 710 is further configured to receive downlink control information sent by the host base station through the forward link; determining a beam identifier and a beam switching time corresponding to the beam identifier according to the downlink control information; and determining reflection parameters of intelligent super-surface array elements in the intelligent super-surface array according to the beam identification and the beam switching time.
In one embodiment, the RIS signal processing module is provided with a radio frequency front terminal module, a signal measurement sub-module, a signal interaction sub-module and a beam generation sub-module; the radio frequency front terminal module is connected with the signal measurement sub-module, the signal interaction sub-module and the RIS array, and the beam generation sub-module is connected with the RIS array element control module; the radio frequency front terminal module is used for receiving and transmitting signals between the RIS signal processing module and the RIS array; the signal measurement submodule is used for measuring forward link signals sent by the host base station through a forward link to obtain host base station information of the host base station; the signal interaction sub-module is used for carrying out information interaction between the host base station and the RIS signal processing module in a control link according to the host base station information, and receiving the beam control information sent by the host base station; the beam management sub-module is used for determining the reflection parameters of the RIS array according to the received beam control information.
In a specific implementation, referring to fig. 5, the radio frequency front terminal module may be an N-channel radio frequency front terminal module, the signal measurement sub-module may be a host base station F-Link signal measurement processing module, the signal interaction sub-module may be a host base station C-Link signal interaction processing module, and the beam generation sub-module may be a beam generation and time management module.
The N-channel radio frequency front end module is connected with a specific array element of the RIS array and is used for receiving and transmitting signals.
The host base station F-Link signal measurement processing module is used for measuring F-Link signals, including measuring the SSB beam intensity of the F-Link, base station system frame number timing information, frequency information and the like.
The host base station C-Link signal interaction processing module is used for carrying out interaction ON the C-Link signal to acquire information which is interactively communicated with the host base station, wherein the information comprises beam information, beam switching time information, ON-OFF information, a process of accessing the host base station by the host base station and the like which are distributed to the RIS relay by the host base station.
The beam generation and time management module is used for generating corresponding RIS array element phase information and switching time points according to beam information and beam switching time information configured by the host base station, and sending the corresponding RIS array element phase information and the corresponding switching time points to the RIS array element control module so that the RIS array element control module can perform phase control and phase adjustment of the RIS array elements.
In one embodiment, the forward link and the control link use the same carrier frequency point for wireless transmission.
In the specific implementation, the array elements and the frequency bands of the RIS array can be shared, and the F-Link and the C-Link adopt the same carrier frequency point for wireless transmission so as to save frequency spectrum resources.
In one embodiment, the forward link uses a first frequency point for wireless transmission, and the control link uses a wired transmission or uses a second frequency point different from the first frequency point for wireless transmission.
In a specific implementation, signals of the reference graph 8,F-Link and the C-Link can not share array elements, different carrier frequency points are adopted for wireless transmission, or F-Link adopts wireless transmission, C-Link adopts wired transmission, so that effective anti-interference is realized, meanwhile, the requirement on RIS array elements is reduced, and the equipment cost is reduced.
In one embodiment, the intelligent super-surface array element of the intelligent super-surface array includes a first array element and a second array element, where the first array element is used to determine the reflection parameter according to the beam control information, and the second array element is used to perform relay forwarding between the host base station and the user terminal according to the reflection parameter.
In one embodiment, the intelligent super-surface array element of the intelligent super-surface array includes a third array element, where the third array element is configured to determine the reflection parameter according to the beam control information in response to a switching operation for a control switch, or relay between the host base station and the user terminal according to the reflection parameter.
The respective modules in the above-described relay communication device and intelligent subsurface repeater may be implemented in whole or in part by software, hardware, and combinations thereof. The above modules may be embedded in hardware or may be independent of a processor in the communication device, or may be stored in software in a memory in the communication device, so that the processor may call and execute operations corresponding to the above modules.
In one embodiment, a communication device is provided, which may be a server, and the internal structure thereof may be as shown in fig. 15. The communication device comprises a processor, a memory, an Input/Output interface (I/O) and a communication interface. The processor, the memory and the input/output interface are connected through a system bus, and the communication interface is connected to the system bus through the input/output interface. Wherein the processor of the communication device is configured to provide computing and control capabilities. The memory of the communication device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The database of the communication device is for storing relay communication data. The input/output interface of the communication device is used to exchange information between the processor and the external device. The communication interface of the communication device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to implement a relay communication method.
It will be appreciated by those skilled in the art that the structure shown in fig. 15 is merely a block diagram of a portion of the structure associated with the present inventive arrangements and is not limiting of the communication device to which the present inventive arrangements are applied, and that a particular communication device may include more or fewer components than shown, or may combine certain components, or have a different arrangement of components.
In an embodiment, there is also provided a communication device including a memory and a processor, the memory storing a computer program, the processor implementing the steps of the method embodiments described above when executing the computer program.
In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored which, when executed by a processor, carries out the steps of the method embodiments described above.
In an embodiment, a computer program product is provided, comprising a computer program which, when executed by a processor, implements the steps of the method embodiments described above.
It should be noted that, the user information (including but not limited to user equipment information, user personal information, etc.) and the data (including but not limited to data for analysis, stored data, presented data, etc.) related to the present application are information and data authorized by the user or sufficiently authorized by each party, and the collection, use and processing of the related data need to comply with the related laws and regulations and standards of the related country and region.
Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, database, or other medium used in embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, high density embedded nonvolatile Memory, resistive random access Memory (ReRAM), magnetic random access Memory (Magnetoresistive Random Access Memory, MRAM), ferroelectric Memory (Ferroelectric Random Access Memory, FRAM), phase change Memory (Phase Change Memory, PCM), graphene Memory, and the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory, and the like. By way of illustration, and not limitation, RAM can be in the form of a variety of forms, such as Static Random access memory (Static Random access memory AccessMemory, SRAM) or dynamic Random access memory (Dynamic Random Access Memory, DRAM), and the like. The databases referred to in the embodiments provided herein may include at least one of a relational database and a non-relational database. The non-relational database may include, but is not limited to, a blockchain-based distributed database, and the like. The processor referred to in the embodiments provided in the present application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic unit, a data processing logic unit based on quantum computing, or the like, but is not limited thereto.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The foregoing examples illustrate only a few embodiments of the application and are described in detail herein without thereby limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of the application should be assessed as that of the appended claims.

Claims (14)

1. The relay communication method is characterized by being applied to an intelligent super-surface relay in an intelligent super-surface relay system, wherein the intelligent super-surface relay system also comprises a host base station, and the intelligent super-surface relay is provided with an intelligent super-surface array; the relay communication method includes:
receiving beam control information sent by the host base station, and determining reflection parameters of the intelligent super-surface array according to the beam control information;
And controlling the intelligent super-surface array according to the reflection parameters so that the intelligent super-surface array can relay and forward between the host base station and the user terminal.
2. The relay communication method according to claim 1, wherein the receiving the beam control information transmitted by the home base station includes:
receiving a forward link signal sent by the host base station through a forward link, and analyzing the forward link signal to obtain host base station information of the host base station;
sending an access request to the host base station through a control link according to the host base station information;
and receiving the beam control information sent by the host base station under the condition that the access request passes.
3. The relay communication method according to claim 2, wherein the receiving the beam control information sent by the host base station and determining the reflection parameter of the intelligent super-surface array according to the beam control information includes:
receiving a beam identifier sent by the host base station through the control link and a beam switching time corresponding to the beam identifier;
and determining reflection parameters of intelligent super-surface array elements in the intelligent super-surface array according to the beam identification and the beam switching time.
4. The relay communication method according to claim 2, wherein the receiving the beam control information sent by the host base station and determining the reflection parameter of the intelligent super-surface array according to the beam control information further comprises:
receiving downlink control information sent by the host base station through the forward link;
determining a beam identifier and a beam switching time corresponding to the beam identifier according to the downlink control information;
and determining reflection parameters of intelligent super-surface array elements in the intelligent super-surface array according to the beam identification and the beam switching time.
5. The relay communication method according to any one of claims 2 to 4, wherein the forward link uses a first frequency point for wireless transmission, and the control link uses a wired transmission or uses a second frequency point different from the first frequency point for wireless transmission.
6. The relay communication method according to claim 1, wherein the intelligent super-surface array elements of the intelligent super-surface array include a first element and a second element, the first element being configured to determine the reflection parameter according to the beam control information, and the second element being configured to relay between the host base station and the user terminal according to the reflection parameter.
7. The relay communication method according to claim 1, wherein the intelligent super-surface array element of the intelligent super-surface array includes a third array element, and the third array element is configured to determine the reflection parameter according to the beam control information in response to a switching operation for a control switch, or relay forwarding between the host base station and a user terminal according to the reflection parameter.
8. The relay communication device is characterized by being applied to an intelligent super-surface relay in an intelligent super-surface relay system, wherein the intelligent super-surface relay system further comprises a host base station, and the intelligent super-surface relay is provided with an intelligent super-surface array; the relay communication device includes:
the signal processing module is used for receiving the beam control information sent by the host base station and determining the reflection parameters of the intelligent super-surface array according to the beam control information;
and the array control module is used for controlling the intelligent super-surface array according to the reflection parameters so as to enable the intelligent super-surface array to relay and forward between the host base station and the user terminal.
9. The intelligent super-surface repeater is characterized by comprising an RIS signal processing module, an RIS array element control module and an RIS array;
The RIS signal processing module is used for receiving beam control information sent by a host base station, determining reflection parameters of the RIS array according to the beam control information, and sending the reflection parameters to the RIS array element control module;
the RIS array element control module is used for controlling the RIS array according to the received reflection parameters;
the RIS array is used for carrying out relay forwarding between the host base station and the user terminal.
10. The intelligent subsurface repeater according to claim 9, wherein the RIS signal processing module is provided with a radio frequency front sub-module, a signal measurement sub-module, a signal interaction sub-module and a beam generation sub-module; the radio frequency front terminal module is connected with the signal measurement sub-module, the signal interaction sub-module and the RIS array, and the beam generation sub-module is connected with the RIS array element control module;
the radio frequency front terminal module is used for receiving and transmitting signals between the RIS signal processing module and the RIS array;
the signal measurement submodule is used for measuring forward link signals sent by the host base station through a forward link to obtain host base station information of the host base station;
The signal interaction sub-module is used for carrying out information interaction between the host base station and the RIS signal processing module in a control link according to the host base station information, and receiving the beam control information sent by the host base station;
the beam management sub-module is used for determining the reflection parameters of the RIS array according to the received beam control information.
11. The intelligent subsurface repeater according to claim 10, wherein the forward link and the control link use the same carrier frequency point for wireless transmission.
12. The intelligent subsurface repeater according to claim 10, wherein the forward link uses a first frequency point for wireless transmission and the control link uses either a wired transmission or a second frequency point different from the first frequency point for wireless transmission.
13. A communication device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method of any of claims 1 to 7 when the computer program is executed.
14. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 1 to 7.
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