WO2023024401A1 - Procédé et dispositif de gestion de faisceaux - Google Patents

Procédé et dispositif de gestion de faisceaux Download PDF

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Publication number
WO2023024401A1
WO2023024401A1 PCT/CN2022/070329 CN2022070329W WO2023024401A1 WO 2023024401 A1 WO2023024401 A1 WO 2023024401A1 CN 2022070329 W CN2022070329 W CN 2022070329W WO 2023024401 A1 WO2023024401 A1 WO 2023024401A1
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Prior art keywords
signal
information
control parameters
beams
management method
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PCT/CN2022/070329
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English (en)
Chinese (zh)
Inventor
杜滢
王志勤
闫志宇
焦慧颖
刘慧�
沈霞
刘晓峰
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中国信息通信研究院
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Publication of WO2023024401A1 publication Critical patent/WO2023024401A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/28—Cell structures using beam steering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/18—Network planning tools

Definitions

  • the present application relates to the technical field of mobile communication, and in particular to a beam management method and device.
  • an omnidirectional antenna When using low-frequency and medium-frequency electromagnetic waves to transmit signals, an omnidirectional antenna is used for transmission, or signals are transmitted in the direction of a sector.
  • high-frequency communication the attenuation of the wireless signal is large, so it is necessary to use beamforming technology to form a directional beam to enhance the power of the transmitted signal in this direction. Therefore, in a mobile communication system, a wireless signal is propagated through a beam, or multiple beams work in turn. Signal coverage can be extended by using multiple beams.
  • the intermediate device of the present application is based on controlling the propagation of electromagnetic waves in the communication channel by means of reflection or transmission to improve the performance of the communication system.
  • the Intelligent Reflecting Surface builds on the classic concept of reconfigurable reflective arrays, specifically, an IRS is a metasurface composed of a large number of tiny elements that diffusely reflect incident signal.
  • Communication systems that introduce middleware increase the requirements for real-time, reconfigurability, and control.
  • the parameters of the metasurface or other phase transformation devices can be controlled by the base station to better control the diffuse reflection of the incident signal to realize the controllable propagation of electromagnetic waves in the communication channel, so as to improve the coverage, capacity and energy efficiency of the communication system. performance.
  • the intermediate device is an entity newly introduced into the communication system, there is no existing technical solution for how the intermediate device implements multi-beam signal transmission.
  • This application proposes a beam management method and equipment to solve the beam management problem of intermediate equipment, so as to achieve the purpose of improving system coverage, capacity and other performance through technical means such as IRS.
  • the embodiment of the present application provides a beam management method used in a mobile communication system, including the following steps:
  • the first beam and the second beam include a first signal, and the first signal includes interrelated first information for identifying the first beam and second information for identifying the second beam.
  • the first information includes the index of the characteristic signal or the index of the resource configuration of the characteristic signal; further preferably, the characteristic signal includes at least one of the following: synchronization signal and PBCH block, CSI-RS, SRS;
  • the second information includes at least one of the following: an index of the second beam, an index of the time-frequency domain resource of the second beam, and a random access resource index.
  • the second beam set includes N second beams, corresponding to N groups of control parameters, each group of control parameters includes parameters for controlling at least one of the phase, amplitude, and frequency of the incident wave, and each Group control parameters are used to generate a second beam.
  • the method of the first aspect of the present application is applied to the first device, comprising the following steps:
  • the first device sends the first signal through at least one of the first beams
  • the corresponding first beam and/or the second beam is determined.
  • the method of the first aspect of the present application is applied to the first device, and further includes the following steps:
  • control information for indicating N sets of control parameters for generating a second set of beams; the second set of beams includes N second beams corresponding to the N sets of control parameters, and each set of control parameters includes a pair of A parameter that controls at least one of the phase, amplitude, and frequency of the incident wave. Further, the control information further includes at least one of a time range, a frequency range, and a spatial range corresponding to the N groups of control parameters.
  • the method of the first aspect of the present application is used for intermediate equipment, including the following steps:
  • control information is received and identified, which is used to indicate N sets of control parameters for generating the second set of beams; the second set of beams includes N second beams, corresponding to the N sets of control parameters, each set of control parameters
  • the parameters include parameters controlling at least one of phase, amplitude, and frequency of the incident wave.
  • control information further includes at least one of a time range, a frequency range, and a spatial range corresponding to the N groups of control parameters.
  • the method in the first aspect of the present application is used for an intermediate device, and the intermediate device includes N intermediate sub-devices; the N intermediate sub-devices are respectively used to reflect the first beam to the second beam N different beams of the set.
  • the intermediate device includes Q intermediate sub-devices; the Q intermediate sub-devices reflect the first beam to N different beams of the second beam set, where Q ⁇ N.
  • the method of the first aspect of the present application is applied to the second device, including the following steps:
  • the second device receives a first signal from a first beam in at least one second beam; transmits a second signal comprising a response to the first information and/or the second information.
  • the embodiments of the present application further provide a communication device (ie, an intermediate device), which is used to implement the method described in any one of the embodiments of the first aspect of the present application.
  • a communication device ie, an intermediate device
  • At least one module in the communication device is used for at least one of the following functions: in the at least one first beam, receiving a first signal and identifying first information; determining second information associated with the first information; according to the second The information generates a first signal transmitted along a second set of beams.
  • the embodiments of the present application further provide a communication device (that is, the first device), which is used to implement the method described in any one of the embodiments of the first aspect of the present application.
  • a communication device that is, the first device
  • At least one module in the communication device is used for at least one of the following functions: sending the first signal through the first beam; receiving a second signal, and the second signal includes a response to the first signal; The second signal identifies the corresponding first beam and/or second beam.
  • the embodiments of the present application further provide a communication device (that is, the second device), which is used to implement the method described in any one of the embodiments of the first aspect of the present application.
  • a communication device that is, the second device
  • At least one module in the communication device is used for at least one of the following functions: receiving a first signal from a first beam in at least one second beam; sending a second signal, which contains information about the first information and/or second response to information.
  • the present application also proposes a communication device, including: a memory, a processor, and a computer program stored in the memory and operable on the processor, when the computer program is executed by the processor Implement the steps of the method described in any one of the embodiments of the present application.
  • 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. .
  • the present application further proposes a mobile communication system, including at least one first 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. Further, it also includes at least one second device as described in any one embodiment of the present application.
  • Figure 1 is a schematic diagram of the beam scanning and optimization process of the NR system
  • FIG. 2 is a schematic diagram of the IRS reflected signal
  • FIG 3 is the application scenario 1 of IRS reflection signal coverage enhancement
  • FIG. 4 shows the second application scenario of IRS reflection signal coverage enhancement
  • Fig. 5 is the flow chart of the embodiment of the method of the present application.
  • FIG. 6 is a flow chart of an embodiment of the method of the present application used in an intermediate device
  • Fig. 7 is a schematic diagram of an embodiment in which the intermediate device scans and sends the first signal of the first beam
  • Fig. 8 is a schematic diagram of an embodiment in which the intermediate device sends the first signal of the first beam through space division;
  • Fig. 9 is a schematic diagram of an embodiment in which the intermediate device scans and sends the first signal of the first beam respectively;
  • FIG. 10 is a flow chart of an embodiment of the method of the present application applied to the first device
  • FIG. 11 is a flowchart of an embodiment of the application method used in the second device.
  • Figure 12 is a schematic diagram of an embodiment of the first device
  • Fig. 13 is a schematic diagram of an embodiment of an intermediate device
  • FIG. 14 is a schematic diagram of an embodiment of a second device
  • FIG. 15 is a schematic structural diagram of a network device of the present invention.
  • Fig. 16 is a schematic structural diagram of an intermediate device of the present invention.
  • FIG. 17 is a schematic structural diagram of a terminal device according to the present invention.
  • Figure 1 is a schematic diagram of the beam scanning and optimization process of the NR system.
  • the downlink beam may be a beam for transmitting any one of SSB, CSI-RS, PDCCH, and PDSCH signals
  • the uplink beam may be a beam for transmitting SRS signals.
  • the SSB signal is sent on the downlink beam as an example to illustrate the beam management process of the new air interface communication as follows:
  • the base station sends SSB (Synchronization Signal and PBCH block) by means of beam scanning. part together.
  • SSBs are only located at certain specific symbol positions, specifically: within half a frame, that is, 5ms, the number L and position of SSBs are calculated and determined according to the subcarrier spacing and frequency band; half frames, that is, multiple SSBs within 5ms form An SS burst set; SS burst sets are sent at a certain period.
  • the spatial orientation of each SSB beam can be different, and the coverage of the entire cell can be achieved through beam scanning.
  • the UE In the cell search phase of the terminal equipment (UE), the UE measures all SSBs in an SS burst set, and finds the SSB with the best signal. After receiving the SSB, the UE can obtain the index of the currently selected SSB and the random access resource configuration associated with the SSB from the PBCH in the SSB. The base station can determine the beam where the UE is located according to the detected random access information, and A random access response is sent accordingly.
  • the base station can determine the beam where the UE is located according to the detected random access information, and A random access response is sent accordingly.
  • the UE finds the SSB with the best signal by searching and measuring all SSBs in an SS burst set, and works in the beam of the SSB. Afterwards, the UE can scan a narrower beam by detecting the CSI-RS within the beam, and report the detected best narrow beam to the base station for transmission of the PDSCH/PDCCH.
  • Figure 1 shows the UE based on SSB beam scanning and the results of beam optimization based on CSI-RS.
  • the UE selects SSB2 to access the network, it further reports the CSI-RS corresponding to the best beam through CSI-RS detection, index such as CSI-RS2 to the gNB, so that the gNB can use the directional beam corresponding to the CSI-RS2 to serve the PDCCH/PDSCH of the UE wait.
  • Fig. 2 is a schematic diagram of IRS reflected signals.
  • the intermediate device in this application is used to forward the signal of the communication device (that is, the first device), and may adopt IRS, integrated access backhaul node (Integrated Access Backhaul, IAB), relay (Relay), radio frequency repeating node, etc.
  • the phase conversion device is composed of an array of intelligent reflection units, and each reflection unit can independently change the parameters of the incident signal. Generally include: phase, amplitude, frequency, and even polarization. IRS can intelligently reconfigure the wireless propagation environment through a large number of low-cost passive reflection units on the plane, thereby significantly improving the performance of wireless communication networks. In actual deployment, it can be used for coverage enhancement and dense coverage capacity enhancement. IRS can be installed on walls, building walls and ceilings etc.
  • the wireless signal is sent from the transmitter, and the coherent combination of their respective scattered signals is created by controlling the reflection unit of the IRS to introduce appropriate amplitude, phase shift, etc., thereby forming a beam that converges at the receiver.
  • the reflection parameters of the reflection unit of the IRS including amplitude and phase shift as an example, assuming that the IRS includes N reflection units, the output signal of one reflection unit is Where ⁇ n is the amplitude reflection factor of the nth reflection unit, ⁇ n is the phase reflection factor of the nth reflection unit, and x n is the incident signal of the nth reflection unit, thus forming a directional reflection beam.
  • the reflection mentioned here generally refers to the wireless signal propagating in any manner such as reflection, refraction, diffraction, and scattering.
  • FIG. 3 shows IRS reflected signal coverage enhancement application scenario 1.
  • IRS can be used to directional reflect the received beam to the blocked blind area. The beam shown cannot cover all blind areas after being reflected by IRS, resulting in UE2 and UE3 Still covering holes.
  • Figure 4 shows the application scenario 2 of IRS reflection signal coverage enhancement. It shows that UE2 is in the coverage area of SSB3, but not in the coverage area of SSB2, but the beam of SSB2 can serve UE2 after reflection, that is, the beam can serve other beam ranges after reflection UEs in the network can increase the quality of service and improve the capacity.
  • the beams emitted by the network equipment and the beams reflected by the IRS need to work together to meet the network coverage and capacity requirements.
  • IRS can reflect all network signals, including synchronization signals, system information, control channels, data channels, etc. Synchronization signals and system information used for cell access need to cover a wide area, while control channels, data channels, etc. are directional covered in a narrowband directional beam. How to manage the beams of IRS reflected signals to meet the requirements of coverage and capacity enhancement is an urgent problem to be solved when IRS is applied to the new air interface communication network.
  • Fig. 5 is a flowchart of an embodiment of the method of the present application.
  • the embodiment of the present application provides a beam management method used in a mobile communication system, including the following steps:
  • Step 101 include a plurality of first beams in the first beam set, and transmit a first signal in at least one first beam;
  • the first beam corresponds to a preset first time period and/or frequency position
  • the first signal is a downlink signal
  • the first beam and the second beam are beams for transmitting any one of SSB, CSI-RS, PDCCH, and PDSCH signals.
  • the first signal is an uplink signal
  • the first beam and the second beam are beams for transmitting SRS signals.
  • the first signal is a side link signal
  • the first beam and the second beam transmit a side link synchronization signal, a side link SSB, a side link broadcast channel, a physical side link control channel PSCCH, A beam of any one of the physical sidelink shared channel PSSCH and the physical sidelink feedback channel.
  • Step 102 after at least one first beam is reflected, it is transmitted in the direction of a second beam set, and the second beam set includes a plurality of second beams; the first beam and the second beam contain a first signal, and the The first signal includes interrelated first information for identifying the first beam and second information for identifying the second beam.
  • the first signal includes interrelated first information for identifying the first beam and second information for identifying the second beam.
  • the first information explicitly identifies the first beam.
  • the first information includes identification information of the first beam.
  • the first information implicitly identifies the first beam.
  • the first beam is identified by a configuration index of resources occupied by the first signal.
  • the second information explicitly identifies the second beam.
  • the second information includes identification information of the second beam.
  • the second information implicitly identifies the second beam.
  • the configuration index of the resources occupied by the second signal is used to identify the second beam.
  • the first information includes the index of the characteristic signal or the index of the resource configuration of the characteristic signal.
  • the feature signal includes at least one of the following: synchronization signal, PBCH block, CSI-RS, and SRS.
  • the second information includes at least one of the following: an index of the second beam, an index of the time-frequency domain resource of the second beam, and a random access resource index.
  • the first signal is a downlink signal
  • the first beam is a beam for transmitting any signal of SSB, CSI-RS, PDCCH, and PDSCH.
  • the first information includes the index of the SSB or the index of the CSI-RS, or the index of the time-frequency domain resource configuration corresponding to the SSB or the CSI-RS in the first beam is the first information;
  • the second A plurality of random access resources corresponding to the information (at least one of the frequency domain resources, synchronization timing, and access preamble sequence of the multiple random access resources is different) is allocated to the plurality of second beams, and is used to identify the first Two beams.
  • the first signal is an uplink signal
  • the first beam is a beam for transmitting an SRS signal
  • the first information and the second information correspond to an SRS index or an SRS resource configuration index.
  • the first signal is a sidelink signal
  • the first beam is a beam for transmitting the sidelink signal.
  • the first information and the second information correspond to the configuration index of the sidelink signal.
  • the second beam set includes N second beams, corresponding to N groups of control parameters, each group of control parameters includes parameters for controlling at least one of the phase, amplitude, and frequency of the incident wave, and each Group control parameters are used to generate a second beam.
  • the N groups of control parameters are indicated by control information.
  • control information further includes (or correspondingly indicates) at least one of a time range, a frequency range, and a spatial range corresponding to the N groups of control parameters.
  • the intermediate device uses the first control parameter and the first beam to reflect the resource of at least one of the time range, frequency range, and space range corresponding to the first set of control parameters to the first second beam; in the second set of control parameters Resources corresponding to at least one of the time range, frequency range, and space range are reflected to the second second beam with the second control parameters and the first beam, ..., the time range corresponding to the Nth group of control parameters, The resources of at least one of the frequency range and the space range are reflected to the Nth second beam by using the Nth control parameter and the first beam.
  • the second beam corresponds to a preset second time period and/or frequency position, for example, when the first signal is transmitted through the second beam, different second beams correspond to different synchronization opportunities, and/or, Different second beams correspond to different carriers, random access resources or scheduled time-frequency domain resources.
  • the first signal includes basic configuration information
  • the basic configuration information includes the correspondence between N 1 (N 1 ⁇ 2) group parameters of the control parameter set and N 1 groups of random access resource sets, and further corresponds to N 1 second beams in the second beam set.
  • Step 103 After the first signal transmitted along at least one second beam is received, a second signal is generated, and the second signal includes a response to the first signal;
  • a response to the first information may be included in the second signal.
  • the response is confirmation information for the identity of the first beam.
  • the first information is time-frequency domain scheduling information
  • the time-frequency domain position of the second signal satisfies the first information
  • the first information is the SSB index
  • the random access resource used by the second signal corresponds to the The SSB index
  • the actually used random access resource for access is the response to the first information.
  • the second signal may also contain a response to the second information, for example, the second information is the index of the time-frequency domain resource of the second beam, then the random access used by the second signal The resource satisfies the second information, and the time-frequency domain resource actually occupied by the second signal is a response to the second information.
  • Step 104 Determine the first beam and/or the second beam according to the response of the second signal to the first information and/or the second information.
  • the second signal is a response to the first signal, so the second signal includes a response to the first information identifying the first beam and/or the second information identifying the second beam.
  • the direction of the first beam can be determined according to the response to the first information; when the second information identifies the second beam, the direction of the first beam can be determined based on the response to the second information , to determine the direction of the second beam.
  • the first information is an SSB index
  • each SSB index corresponds to at least one first beam
  • the random access resource used by the second signal corresponds to the SSB index, and according to the random access resource used by the second signal, determine and The first beam corresponding to the SSB.
  • the second information is time-frequency domain resources allocated by random access, and multiple synchronization opportunities in the second information are allocated to multiple second beams, then the resource occupied by the second signal satisfies the requirements of the second information. , determining the second beam according to the second information.
  • the corresponding first beam is determined. At this time, the corresponding first beam can be determined according to the response to the second information.
  • FIG. 6 is a flow chart of an embodiment of the method of the present application applied to an intermediate device.
  • the method in the first aspect of the present application is used in an intermediate device, and the first signal generated by the first device is transmitted to the second device after passing through the intermediate node. Contains the following steps:
  • Step 201 In the at least one first beam, receive a first signal, and identify first information
  • the intermediate node acquires the first beam occupied by the first signal, where the first beam belongs to the first beam set;
  • the first device is a network device (base station)
  • the second device is a terminal device
  • the first signal is any one of SSB, CSI-RS, PDCCH, and PDSCH.
  • the first device uses multiple first beams in the first beam set in a beam scanning manner, and sends SSBs sequentially, namely SSB-0, SSB-1, SSB-2, and SSB-3 .
  • the intermediate device serves as an access node under the coverage of the first device, and works in one beam of the first beam set.
  • the intermediate device determines the first beam through beam scanning, and the intermediate device may also report the information of the first beam to the first device.
  • the intermediate device initiates access to the first device on the access resource indicated by the SSB corresponding to the first beam. Since the first beam corresponds to the SSB, the first device may determine the first beam selected by the intermediate device according to resources detected from the access signal sent by the intermediate device.
  • the first device When the first signal is an uplink signal, the first device is a terminal, the second device is a network device, and the first signal is an SRS.
  • the second device determines the optimal second beam by scanning the second beam set, and indicates the second information corresponding to the optimal second beam to the first device through control signaling. .
  • the first device When the first signal is a side link signal, the first device is a terminal, the second device is another terminal, and the first signal is a side link signal.
  • the second device determines an optimal second beam by scanning the second beam set, and indicates to the first device the second information corresponding to the optimal second beam through side link feedback signaling.
  • Step 202 Receive and identify control information, the control information is used to indicate N sets of control parameters for generating the second beam set; the second beam set includes N second beams, corresponding to the N sets of control parameters, each The set of control parameters includes parameters for controlling at least one of phase, amplitude, and frequency of incident waves.
  • step 202 the intermediate device acquires control information, where the control information is used to indicate the set of control parameters.
  • control information further includes at least one of a time range, a frequency range, and a spatial range corresponding to the N groups of control parameters.
  • the reflection device in the intermediate device corresponding to each group of control parameters in the control parameter set uses at least one of the preset times of each group of parameter sets in the control parameter set.
  • the preset time for using each set of parameters in the set of control parameters is a subset of the sending time of the first beam.
  • the intermediate device includes a plurality of reflecting units; the plurality of reflecting units are respectively configured to reflect the first beam to at least one of a plurality of different beams of the second set of beams.
  • a second beam set is synthesized with the first beam by controlling the parameter set, and the second beam set includes at least two second beams.
  • the following 202-1, 202-2, 202-3 are parallel optional modes.
  • At least a part of the control parameters in the plurality of sets of control parameters work in time-sharing, so that in the first time period, at least a part of the second beams correspond to different second time periods.
  • the set of control parameters includes N (N ⁇ 2) groups of control parameters, and the intermediate device uses a Jth (1 ⁇ J ⁇ N) group of control parameters within a preset Jth period of time.
  • the set of control parameters corresponds to N (M ⁇ 2) sets of control parameters of the intermediate device.
  • a set of control parameters includes respective reflection factors of the L reflection units in the IRS.
  • a set of control parameters includes amplitude reflection factors and phase reflection factors of the L reflection units in the IRS.
  • the second beam set includes N beams, and the N sets of control parameters are respectively combined with the first beams to the N beams (see FIG. 7 for a specific embodiment).
  • At least a part of the control parameters in the plurality of sets of control parameters work at the same time, so that the second time periods corresponding to at least a part of the second beams within the first time period are the same.
  • the intermediate device is composed of N intermediate sub-devices
  • the control parameter set includes N (N ⁇ 2) groups of control parameters
  • the N intermediate sub-devices respectively use one of the N groups of control parameters
  • a beam of a second set of beams is synthesized with the first beam.
  • the control parameter set corresponds to the control parameters of the N intermediate sub-devices.
  • a set of control parameters includes reflection factors of the reflection units of the intermediate sub-equipment (see FIG. 8 for a specific embodiment).
  • At least some of the control parameters in the multiple sets of control parameters work in time-sharing, so that in the first period, at least a part of the second beams correspond to different second periods, and at least some of the multiple sets of control parameters The control parameters work at the same time, so that in the first period, at least a part of the second beams correspond to the same second period.
  • the set of control parameters includes N (N ⁇ 2) groups of control parameters, and the intermediate device uses the Jth (1 ⁇ J ⁇ N) group of control parameters at a preset time.
  • the intermediate device is composed of Q intermediate sub-devices
  • the control parameter set includes N (N ⁇ 2) groups of control parameters
  • the Pth among the Q intermediate sub-devices uses W( 1 ⁇ W ⁇ N) group, which synthesizes W beams of the second beam set with the first beam
  • the intermediate sub-device uses the Vth (1 ⁇ V ⁇ W) of the W group of control parameters at the preset time ) group control parameters.
  • the set of control parameters corresponds to the control parameters of the Q intermediate sub-devices.
  • a set of control parameters includes reflection factors of the reflection units of the intermediate sub-equipment (see FIG. 9 for a specific embodiment).
  • Step 203 Determine second information associated with the first information, reflect the first signal according to the second information, and generate a second beam set, where the first signal further includes the second information.
  • the second information is four sets of time-frequency domain resource configurations, respectively used to define four sets of random access resources, and the four sets of time-frequency domain resource configurations are all associated with the first information.
  • the first signal containing the first information is further transmitted according to four beam directions, each beam direction uses a set of time-frequency domain resource configuration, so that the first signal transmitted along the second beam set contains second information.
  • Step 204 Generate a second signal or receive a second signal, and transmit the second signal along the first beam direction.
  • the intermediate device receives the first signal, generates a second signal, and transmits it back;
  • the intermediate device receives the first signal from the first device and the second signal from the second device, and forwards the second signal to the first device.
  • the second signal is a response to the first signal, so the second signal contains a response to the first information and/or the second information;
  • the intermediate device when the intermediate device generates a second signal, the second signal includes a response to the information identifying the first beam. If the first information identifies the first beam, the intermediate device may determine the corresponding first beam according to the first information.
  • the intermediate device when the intermediate device receives the second signal returned along the second beam, the second signal includes a response to the information identifying the second beam.
  • the intermediate device may determine the corresponding second beam according to a response to the second information in the second signal.
  • step 204 is an optional step for the intermediate device, and the first device may directly receive the second signal sent by the second device.
  • Fig. 7 is a schematic diagram of an embodiment in which an intermediate device scans and sends a first signal of a first beam.
  • the control parameter set includes the first set of control parameters, the second set of control parameters, the third set of control parameters and the fourth set of control parameters, which are respectively combined with x into the second set of beams: the first reflected beam , the second reflected beam, the third reflected beam, and the fourth reflected beam.
  • the information carried by the second beam set in turn is y 1 , y 2 , y 3 , and y 4 .
  • the intermediate device After the intermediate device accesses the first device, it can obtain the synchronization information of the first device, and identify the time timing of the system frame and subframe.
  • the J th beam of the second beam set may be synthesized with the first beam by using the set of control parameters.
  • the IRS can use the second beam set to scan and send the SSB according to the preset time.
  • the IRS beam scanning sends the selected SSB, which can expand the coverage of the IRS and meet the performance improvement requirements such as network coverage and capacity.
  • the preset time for the intermediate device to apply the J (1 ⁇ J ⁇ N) group of control parameters, the frequency of the intermediate device scanning beams can be adjusted to balance system efficiency.
  • Fig. 8 is a schematic diagram of an embodiment in which an intermediate device sends a first signal of a first beam through space division.
  • the control parameter set includes a first group of control parameters, a second group of control parameters, a third group of control parameters and a fourth group of control parameters.
  • the first group of control parameters and x synthesize the first reflected beam; in the second intermediate sub-device, the second group of control parameters and x synthesize the second reflected beam...
  • the information carried by the second beam set in turn is y 1 , y 2 , y 3 , y 4 .
  • N groups of control parameters the intermediate device simultaneously sends the first signal with the second beam set through N intermediate sub-devices and M groups of control parameters, which can expand the coverage of the IRS and meet performance improvement requirements such as network coverage and capacity.
  • Fig. 9 is a schematic diagram of an embodiment in which an intermediate device scans and sends first signals of first beams respectively.
  • the control parameter set includes a first group of control parameters, a second group of control parameters, a third group of control parameters and a fourth group of control parameters.
  • the first group of control parameters synthesizes the first reflected beam with x at a preset time
  • the second group of control parameters synthesizes a second reflected beam with x at a preset time
  • the third group of control parameters synthesizes a third reflected beam with x at a preset time
  • the fourth group of control parameters synthesizes a fourth reflected beam with x at a preset time.
  • the intermediate device sends the first signal through W intermediate sub-devices, which can expand the coverage of the IRS and meet performance improvement requirements such as network coverage and capacity. Moreover, by adjusting the value of W and the preset time for the intermediate sub-device to apply the Vth (1 ⁇ V ⁇ W) group of control parameters, the frequency of the intermediate sub-device scanning the beam can be adjusted to balance the system efficiency.
  • Fig. 10 is a flow chart of an embodiment of the method of the present application applied to the first device.
  • the method of the first aspect of the present application is applied to the first device, comprising the following steps:
  • Step 301 the first device sends the first signal through at least one of the first beams
  • the first signal is a downlink signal
  • the first device is a network device
  • the first beam is a beam for transmitting any target information among SSB, CSI-RS, PDCCH, and PDSCH.
  • the first signal is an uplink signal
  • the first device is a terminal device, and uses beam scanning (first beam set) to sequentially send SRS signals, namely SRS-1, SRS-2, SS-3, and SRS-4.
  • Step 302. Determine and send control information, where the control information is used to indicate N groups of control parameters for generating the second beam set.
  • the second beam set includes N second beams, corresponding to the N sets of control parameters, each set of control parameters includes parameters for controlling at least one of the phase, amplitude, and frequency of the incident wave. Further, the control information further includes at least one of a time range, a frequency range, and a spatial range corresponding to the N groups of control parameters.
  • the first device sends control information, the control information includes a control parameter set, the control parameter set is combined with the first beam into a second beam set, and the second beam set includes at least two beam.
  • the first device sends basic configuration information
  • the basic configuration information includes the corresponding relationship between N 1 (N 1 ⁇ 2) group parameters of the control parameter set and N 1 groups of random access resource sets, and the control parameter The set is used to generate N1 second beams in the second beam set, and each set of random access resources corresponds to one second beam.
  • the first device broadcasts correspondences between the N1 groups of parameters and the N1 groups of random access resource sets.
  • control information further includes the preset time for using each group of parameter sets in the control parameter set, the intermediate sub-equipment corresponding to each group of parameter sets in the control parameter set, and the use of each group of parameter sets in the control parameter set. At least one of the preset times of the set of group parameters.
  • step 302 is an optional step, and the intermediate device may also acquire the control information in other ways.
  • Step 303 Receive a second signal, where the second signal includes a response to the first signal.
  • the second signal is a response to the first signal, so the second signal includes a response to the first information and/or the second information.
  • Step 304 Determine the first beam and/or the second beam according to the second signal.
  • the corresponding first beam when the first information identifies the first beam, the corresponding first beam may be determined according to the response to the first information, and/or, when the second information identifies the second beam, the corresponding first beam may be determined according to the response to the second information corresponding to the second beam.
  • the second signal is an uplink signal from the intermediate device, and the first device acquires first beam information corresponding to the intermediate device.
  • the intermediate device serves as an access node under the coverage of the first device, and works in one beam of the first beam set.
  • the first device can determine the first beam information in the following manner:
  • the intermediate device acquires access signal resources of the intermediate device, and determines the first beam information.
  • the intermediate device initiates access to the first device at the access resource indicated by the SSB corresponding to the first beam. Since the first beam corresponds to the SSB, the first device may acquire information about the first beam according to resources used to detect access signals.
  • the intermediate device acquires access signal resources of the terminal node, and determines the first beam information.
  • the terminal node may determine the optimal beam in the second beam set according to the beam scanning result of the reference information, and feed back the indication information corresponding to the optimal beam to the first device, and the first device The first beam is determined according to the indication information and the directions of the beams in the first beam set.
  • the second signal is an uplink signal from the second device, and the first device obtains the second beam information corresponding to the second device, and then determines the first beam information.
  • the intermediate device is an access node covered by the first device, and the second device is a terminal node covered by the intermediate device.
  • the terminal node determines that the k-th beam is the optimal beam by detecting the second beam set, and the k-th beam is synthesized by the g-th parameter set and the first beam, and the terminal node is combined with the g-th parameter set
  • the corresponding random access resource sends random access information
  • the first device can identify the parameter set and the first beam corresponding to the random access information by detecting each random access resource set, and then determine the kth beam as the terminal node access to the second beam.
  • the first device may further optimize the sending beam for the terminal node.
  • the terminal node may determine the optimal beam in the second beam set according to the beam scanning result of the reference information, and feed back indication information corresponding to the optimal beam to the first device, and the first device indicates the information and the second beam accordingly.
  • the direction of each beam in a beam set determines the first beam.
  • Fig. 11 is a flow chart of an embodiment of the method of the present application applied to the second device.
  • the method of the first aspect of the present application is applied to the second device, including the following steps:
  • Step 401 The second device receives a first signal from a first beam in at least one second beam
  • the second device scans the optimal beam in the second beam set and receives the first signal
  • the first signal is a downlink signal
  • the second device is a terminal device
  • the second device determines a second beam by detecting and determining a preset downlink reference signal, and detects the first signal therein.
  • the first signal is an uplink signal
  • the second device is a network device
  • the second device determines a second beam by detecting and determining a preset uplink reference signal, and detects the first signal therein.
  • Step 402 the second device identifies the first signal, and obtains the first information and/or the second information.
  • the first information includes the index of the characteristic signal or the index of the resource configuration of the characteristic signal.
  • the characteristic signal includes at least one of the following: synchronization signal, PBCH block, CSI-RS, and SRS.
  • the second information includes at least one of the following: an index of the second beam, an index of the time-frequency domain resource of the second beam, and a random access resource index.
  • Step 403. The second device sends a second signal, which includes a response to the first signal. Further, the second signal includes a response to the first information and/or the second information.
  • the second device sends information indicating an optimal second beam index as a response to the second information.
  • the second signal is an uplink signal
  • the second device is a terminal device.
  • the N 1 (N 1 ⁇ 2) groups of parameters are in one-to-one correspondence with N 1 groups of random access resource sets
  • the terminal node sends access information on a target random access resource, indicating the optimal beam index, and the target random access resource is a random access set associated with the optimal beam.
  • the terminal node may determine the optimal beam according to the beam scanning result of the reference information, and feed back indication information corresponding to the optimal beam to the first device. For the first device to further optimize the beam for the terminal node.
  • the first beam is a beam for transmitting SSB.
  • the terminal node determines the best beam (called target reflected beam) in the second beam set scanned and emitted by the intermediate device, and feeds back the beam information.
  • Synchronization signals, system information, etc. need to cover a wider area, and the target reflection beam is a wider beam.
  • CSI-RS is used for the optimization of directional coverage narrowband beams such as control channels and data channels of terminal equipment. Further, after the intermediate device obtains the target transmission beam information, it can roughly determine the communication direction where the terminal node is located.
  • the CSI-RS transmission beam corresponding to the target reflection beam can be determined as the first beam, and multiple beams corresponding to the first beam can be scanned and transmitted by the intermediate device, which is convenient for quickly optimizing the service control channel and service of the terminal node in a short time
  • the directional beam of the data channel improves the service quality and system capacity.
  • the second signal is a downlink signal
  • the second device is a network device
  • the network device indicates information about the second beam index through control information.
  • the solution of this embodiment is also applicable to the case where the first device is a terminal device and the first beam is a beam for transmitting an uplink SRS.
  • the intermediary device scans and transmits the best uplink beam information to ensure uplink coverage and capacity requirements.
  • Fig. 12 is a schematic diagram of a first device embodiment.
  • the embodiment of the present application also proposes a communication device (that is, the first device), using the method in any embodiment of the present application, at least one module in the communication device is used for at least one of the following functions: through the first beam sending the first signal, the first signal including information identifying the first beam and/or the second beam; receiving a second signal, the second signal including a response to the first signal, In particular, said second signal contains a response to information identifying said first beam and/or said second beam;
  • the corresponding first beam is determined according to the response to the first information
  • the corresponding first beam and/or second beam is determined according to the response to the second information.
  • the first device is further configured to send control information, where the control information includes a control parameter set, and the control parameter set is combined with the first beam to form a second beam set.
  • the first device is further configured to send a random access resource configuration or a scheduled resource configuration corresponding to each beam in the first beam set and/or the second beam set, as information identifying the first beam and/or the second beam.
  • a communication device 500 proposed in this application includes a first sending module 501 , a first determining module 502 , and a first receiving module 503 .
  • the first sending module is configured to send a first signal, which includes at least one of the following information: information identifying the first beam and/or the second beam (such as first information, second information), control information.
  • the first determination module is configured to determine information (such as first information, second information) and control information identifying the first beam and/or the second beam; and is also used to determine the first beam according to the second signal beam and/or a second beam.
  • the first receiving module is configured to receive a second signal.
  • the first device mentioned in this application may be a base station device or a network-side processing device connected to the base station, or may be a terminal device.
  • Fig. 13 is a schematic diagram of an embodiment of an intermediate device.
  • the present application also proposes a communication device (that is, an intermediate device), using the method of any embodiment of the present application, at least one module in the intermediate device is used for at least one of the following functions: in the at least one first beam , receiving the first signal and identifying the first information; determining the second information associated with the first information; receiving and identifying the control information for generating a second beam set; the second beam set includes N second beams , corresponding to N groups of control parameters; generating a first signal to be continuously transmitted along the second beam set according to the second information.
  • a communication device that is, an intermediate device
  • the intermediate device includes N reflecting units; the N reflecting units are respectively used to reflect the first beam to N different beams of the second beam set.
  • the intermediate device generates a second signal, and the second signal includes a response to the information (such as the first information) identifying the first beam in the first signal;
  • the intermediate device receives a second signal from the second device, and the second signal includes a response to the information (for example, second information) identifying the second beam in the first signal .
  • an intermediate device 600 for controlling a reflection unit (such as a smart metasurface 604) or other phase transformation devices, including an intermediate sending module 601, an intermediate determining module 602, and an intermediate receiving module 603.
  • a reflection unit such as a smart metasurface 604
  • other phase transformation devices including an intermediate sending module 601, an intermediate determining module 602, and an intermediate receiving module 603.
  • the intermediate receiving module is configured to receive the first signal, including information identifying the first beam and/or the second beam (such as first information, second information), and control information. In an embodiment of the present application, it is also used for receiving a second signal from a second device.
  • the intermediate determination module is configured to determine the first beam to be accessed according to the information (such as first information) identifying the first beam in the first signal; and determine the operating parameters of the phase transformation device in the intermediate device according to the control information ; identifying first information; determining second information associated with the first information.
  • the intermediate determination module is further configured to: signal to determine the second beam, and further, when each second beam set corresponds to one first beam, once the second beam is determined, the corresponding first beam is determined, and the intermediate determination module can also be based on the The second signal of the second device defines the first beam.
  • the intermediate sending module is configured to send a second signal, where the second signal is generated by an intermediate device or forwarded from the second device.
  • the intermediate equipment mentioned in this application may refer to a mobile terminal connected to a reflection unit or other phase conversion device or other equipment dedicated to controlling the reflection unit or other phase conversion device.
  • FIG. 14 is a schematic diagram of an embodiment of a second device
  • the present application also proposes a communication device (that is, a second device), using the method in any one of the embodiments of the present application, at least one module in the second device is used for at least one of the following functions: receiving at least one second beam A first signal from a first beam; identifying the first signal, obtaining information (eg, first information, second information) identifying the first beam and/or the second beam; determining the identification of the first beam And/or the response to the information of the second beam, for example, according to the first information and/or the second information, determine the response to the first information and/or the response to the second information; send a second signal, which contains the response to A response identifying information (eg, first information and/or second information) of said first beam and/or said second beam.
  • a communication device that is, a second device
  • a communication device 700 proposed in this application includes a second sending module 701 , a second determining module 702 , and a second receiving module 703 .
  • the second receiving module is configured to receive the first signal, including information identifying the first beam and/or the second beam (for example, first information and/or second information).
  • the second determining module is configured to determine the first beam and/or the second beam according to the information identifying the first beam and/or the second beam. For example, the first beam is determined according to the first information, or the first beam and/or the second beam is determined according to the second information.
  • the second sending module is configured to send the second signal, which includes a response to the first information and/or the second information.
  • the second device mentioned in this application may be a base station device or a network-side processing device connected to the base station, or may refer to a mobile terminal device.
  • Fig. 15 shows a schematic structural diagram of a network device of the present invention.
  • the network device 800 includes a processor 801 , a wireless interface 802 , and a memory 803 .
  • the wireless interface may be a plurality of components, including a transmitter and a receiver, providing a unit for communicating with various other devices over a transmission medium.
  • the wireless interface implements the communication function with the intermediate device, processes wireless signals through the receiving and transmitting means, and the data carried by the signals communicates with the memory or the processor through the internal bus structure.
  • the memory 803 contains a computer program for executing any one embodiment of the present application related to the first device or the second device, and the computer program is run or changed on the processor 801 .
  • the bus system includes a data bus, a power bus, a control bus and a status signal bus, which will not be repeated here.
  • Fig. 16 is a block diagram of an intermediary device according to another embodiment of the present invention.
  • the middleware 900 includes at least one processor 901 , a memory 902 , a network interface 903 and at least one control interface 904 .
  • Various components in the middleware 900 are coupled together through a bus system.
  • a bus system is used to implement the connection communication between these components.
  • the bus system includes data bus, power bus, control bus and status signal bus.
  • the control interface 904 is used to connect the phase conversion device of the intermediate device (such as a metasurface device), convert the multiple sets of control parameters into the driving signal of each surface unit, and realize the adjustment of the reflection (or refraction) signal of the intermediate device.
  • the phase conversion device of the intermediate device such as a metasurface device
  • Fig. 17 is a block diagram of a terminal device of the present invention.
  • the terminal device A00 comprises at least one processor A01, a memory A02, a user interface A03 and at least one network interface A04.
  • the individual components in the terminal A00 are coupled together via a bus system.
  • a bus system is used to implement the connection communication between these components.
  • the bus system includes data bus, power bus, control bus and status signal bus.
  • the user interface A03 may include a display, a keyboard, or a pointing device, such as a mouse, a trackball, a touch pad, or a touch screen.
  • the memory 902, A02 stores executable modules or data structures.
  • An operating system and application programs can be stored in the memory.
  • the operating system includes various system programs, such as framework layer, core library layer, driver layer, etc., for realizing various basic services and processing tasks based on hardware.
  • the application program includes various application programs, such as a media player, a browser, etc., and is used to implement various application services.
  • the memory 902 contains a computer program for executing any embodiment of the present application involving the intermediate device, or, the memory A02 contains executing any of the embodiments of the present application involving the first device or the second device computer program, said computer program runs or changes on said processor 901, A01.
  • the memory 902, A02 includes a computer-readable storage medium, and the processor 901, A01 reads information in the memory 902, A02, and completes the steps of the above method in combination with its hardware.
  • a computer program is stored on the computer-readable storage medium, and when the computer program is executed by the processor 901, A01, each step of the method embodiment as described in any one of the foregoing embodiments is implemented.
  • the processor 901, A01 may be an integrated circuit chip, which has signal processing capabilities. In the implementation process, each step of the method of the present application may be completed by an integrated logic circuit of hardware in the processor 901, A01 or an instruction in the form of software.
  • the processors 901, A01 may be general-purpose processors, digital signal processors, application-specific integrated circuits, off-the-shelf programmable gate arrays or other programmable logic devices, discrete gate or transistor logic devices, and discrete hardware components.
  • Various methods, steps and logic block diagrams disclosed in the embodiments of the present invention may be implemented or executed.
  • a general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.
  • the steps of the method disclosed in connection with the embodiments of the present invention can be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor.
  • a device of the present application includes one or more processors (CPUs), input/output user interfaces, network interfaces and memory.
  • the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • 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 one embodiment of the present application are implemented.
  • the memory 803, 902, and A02 of the present invention may include non-permanent memory in a computer-readable medium, random access memory (RAM) and/or non-volatile memory, such as read-only memory (ROM) or Flash memory (flash RAM).
  • Computer-readable media including both permanent and non-permanent, removable and non-removable media, can be implemented by any method or technology for storage of information.
  • Information may be computer readable instructions, data structures, modules of a program, 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 Disc Read-Only Memory (CD-ROM), Digital Versatile Disc (DVD) or other optical storage, Magnetic tape cartridge, tape magnetic disk storage or other magnetic storage device or any other non-transmission medium that can be used to store information that can be accessed by a computing device.
  • computer-readable media excludes transitory computer-readable media, such as modulated data signals and carrier waves.
  • this application also proposes a mobile communication system, including at least one embodiment of any intermediate device in this application and/or at least one embodiment of any network device in this application. Further, the mobile communication system further includes at least one embodiment of any terminal device in the present application.
  • first and second in this application are used to distinguish multiple objects with the same name, and are not used to limit the order or size. Unless otherwise specified, it has no other special meaning.

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

La présente demande concerne un procédé de gestion de faisceaux à utiliser dans un système de communication mobile. Le procédé comprend : la mise d'une pluralité de premiers faisceaux dans un premier ensemble de faisceaux ; la réflexion d'au moins un premier faisceau et ensuite sa transmission dans la direction d'un second ensemble de faisceaux, le second ensemble de faisceaux comprenant une pluralité de seconds faisceaux ; et les premiers faisceaux et les seconds faisceaux comprenant des premiers signaux, les premiers signaux comprenant des premières informations et des secondes informations associées les unes aux autres, les premières informations identifiant les premiers faisceaux et les secondes informations identifiant les seconds faisceaux. La présente demande concerne en outre un dispositif et un système pour mettre en œuvre le procédé. Dans la présente demande, le problème de gestion de faisceaux d'un dispositif intermédiaire est résolu de façon à accomplir l'objectif d'améliorer des performances telles que la couverture et la capacité du système au moyen de moyens techniques tels qu'IRS.
PCT/CN2022/070329 2021-08-27 2022-01-05 Procédé et dispositif de gestion de faisceaux WO2023024401A1 (fr)

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