CN113727363B - Beam management method and device for intermediate node - Google Patents
Beam management method and device for intermediate node Download PDFInfo
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- CN113727363B CN113727363B CN202110839702.9A CN202110839702A CN113727363B CN 113727363 B CN113727363 B CN 113727363B CN 202110839702 A CN202110839702 A CN 202110839702A CN 113727363 B CN113727363 B CN 113727363B
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- 238000007726 management method Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 60
- 238000010295 mobile communication Methods 0.000 claims abstract description 14
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- 238000004891 communication Methods 0.000 claims description 17
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- 230000005540 biological transmission Effects 0.000 claims description 13
- 238000011084 recovery Methods 0.000 claims description 13
- 238000004590 computer program Methods 0.000 claims description 12
- 238000013507 mapping Methods 0.000 claims description 12
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- 238000005516 engineering process Methods 0.000 description 5
- 238000001210 attenuated total reflectance infrared spectroscopy Methods 0.000 description 4
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
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Abstract
The application discloses a beam management method of an intermediate node, which is used for a mobile communication system, wherein the mobile communication system comprises network equipment, an intermediate node device and user equipment, service signals generated by the network equipment are directly received by the user equipment after being radiated by a transmitter, or are received by the user equipment after being radiated by the intermediate node device, and downlink information comprises first indication information, second indication information and third indication information for identifying the beam direction of the intermediate node. The application also includes devices and systems for implementing the methods. The method and the device solve the problem of how to realize beam information configuration and beam switching in the mobile communication system of the intermediate node.
Description
Technical Field
The present disclosure relates to the field of mobile communications technologies, and in particular, to a method and an apparatus for beam management of an intermediate node.
Background
The intermediate nodes (Intelligent Reflecting Surface, IRS) are based on controlling the propagation of electromagnetic waves in the communication channel to improve the performance of the communication system. For example, a smart supersurface (Intelligent Reflecting Surface, IRS) is a metasurface composed of a large number of tiny elements that diffusely reflect an incident signal in a controlled manner. IRS builds on the classical concept of reconfigurable reflectarrays, increasing the need for real-time reconfigurability and control.
The 5g r15 standardizes the non-contention access based beam failure recovery procedure for PCell and Pscell, and when a beam failure is detected, the terminal selects a new beam meeting the threshold requirement and initiates non-contention random access on the random access channel PRACH resources managed by this new beam. After receiving the random access request, the base station determines the new beam and sends a response message within a control set CORESET (CORESET-BFR) dedicated to beam failure recovery. After receiving the response message, the terminal receives the downlink control channel PDCCH in the CORESET-BFR by using the new beam, and uses the latest beam of the random access channel as the sending beam of the uplink control channel PUCCH until the terminal receives the RRC message reconfigured by the transmission configuration index TCI or the MAC CE signaling activated by the TCI.
Compared with a system without an intermediate node, the intermediate node adjusts the beam direction, so the beam direction received by the terminal and the beam direction sent by the base station can change along with the phase adjustment of the intermediate node, when a beam failure recovery mechanism is considered, the terminal is required to report new candidate beams, a random access channel is adopted to establish a one-to-one correspondence with reference signals corresponding to the candidate downlink beams, the base station can obtain candidate beam information reported by the terminal through the detected PRACH, and the intelligent super surface adjusts the phase of the beam information, so that the correspondence between the random access channel and the reference signals corresponding to the downlink beams is changed, and the existing beam management mechanism and the beam failure recovery mechanism are not applicable.
Disclosure of Invention
The application provides a beam management method and device of an intermediate node, which solve the problem of how to realize beam information configuration and beam switching in a mobile communication system of the intermediate node.
In a first aspect, an embodiment of the present application provides a beam management method of an intermediate node, which is used in a mobile communication system, where the mobile communication system includes a network device, an intermediate node device, and a user device, and a signal generated by the network device is radiated by a transmitter and then directly received by the user device, or reflected by the intermediate node device and then received by the user device, where the method includes the following steps:
the downlink information comprises first indication information for identifying the beam direction of the intermediate node.
Preferably, the first indication information includes all beam directions within a phase change period range of the intermediate node.
Preferably, the downlink information includes second indication information, where the second indication information includes a random access channel resource and a random access preamble sequence corresponding to the beam direction of the intermediate node.
Further, the downlink information includes third indication information, where the third indication information includes a correspondence between downlink SSB transport blocks or CSI-RS corresponding to the intermediate node beam direction.
Preferably, the downlink information is RRC signaling or MAC CE signaling; the downlink information includes at least one of the following information: mapping pattern period, SSB random access opportunity and intermediate node phase information.
Preferably, the downlink information may also be DCI signaling.
Preferably, the downlink information may further be: and transmitting the data in a broadcasting mode.
Preferably, the method, for a network device, according to the embodiment of the first aspect of the present application includes the following steps:
the network equipment receives a beam switching request, and requests to indicate the beam direction special for the intermediate node;
the network equipment sends the downlink information, wherein the downlink information comprises first indication information, second indication information and third indication information; the first indication information is used for identifying the beam direction of the intermediate node; the second indication information comprises random access channel resources and random access preamble sequences corresponding to the beam direction of the intermediate node; and the third indication information comprises a corresponding relation of a downlink SSB transmission block or a CSI-RS corresponding to the beam direction of the intermediate node.
Preferably, the method, for a network device, according to the embodiment of the first aspect of the present application includes the following steps:
the network equipment sends the downlink information, wherein the downlink information comprises first indication information, and the first indication information comprises all beam directions in a phase change period range of an intermediate node;
the network equipment receives the beam switching request and identifies the beam direction after switching.
Preferably, the method, which is described in the embodiment of the first aspect of the present application, is used for a terminal device, and includes the following steps:
the terminal equipment receives the downlink information, wherein the downlink information comprises first indication information, second indication information and third indication information; the first indication information is used for identifying the beam direction of the intermediate node; the second indication information comprises random access channel resources and random access preamble sequences corresponding to the beam direction of the intermediate node; the third indication information comprises a corresponding relation of a downlink SSB transmission block or a CSI-RS corresponding to the beam direction of the intermediate node;
and the terminal equipment performs beam switching according to the beam direction indicated by the downlink information when the current beam fails.
Preferably, the method, which is described in the embodiment of the first aspect of the present application, is used for a terminal device, and includes the following steps:
the terminal equipment receives the downlink information, wherein the downlink information comprises first indication information, and the first indication information is used for identifying the beam direction of the intermediate node; the first indication information comprises all beam directions in the phase change period range of the intermediate node;
and when the current beam fails, the terminal equipment selects a new beam direction in the whole beam direction range and performs beam switching.
In a second aspect, embodiments of the present application further provide a terminal device, configured to implement the method according to any one of the embodiments of the first aspect of the present application. The terminal equipment is used for receiving the downlink information; and the method is also used for carrying out beam switching according to the downlink information when the current beam fails.
In a third aspect, an embodiment of the present application further proposes a network device, configured to implement a method according to any one of the embodiments of the first aspect of the present application. The network device is configured to send the downlink information.
In a fourth aspect, the present application also proposes a communication device comprising: memory, a processor and a computer program stored on the memory and executable on the processor, which when executed by the processor performs the steps of the method according to any of the embodiments of the present application.
In a fifth aspect, the present application also proposes a computer readable medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method according to any of the embodiments of the present application.
In a sixth aspect, the present application further proposes a mobile communication system, which comprises at least 1 network device according to any one embodiment of the present application and/or at least 1 terminal device according to any one embodiment of the present application.
The above-mentioned at least one technical scheme that this application embodiment adopted can reach following beneficial effect:
the invention discloses a beam failure recovery process and a beam failure recovery method in an intermediate node system. By the method, the conflict and interference between the terminal receiving the signal passing through the intermediate node and the terminal receiving the signal of the base station are avoided, and the beam failure recovery can be well realized in a system deploying the intermediate node. The designed method well multiplexes the existing flow and method, and reduces signaling overhead as much as possible.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:
FIG. 1 is a schematic diagram of an IRS-enhanced multi-antenna wireless communication system;
FIG. 2 is a flowchart of an embodiment of a method according to the present application;
FIG. 3 is a flow chart of an embodiment of the method of the present invention for a network device;
FIG. 4 is a flow chart of an embodiment of the method of the present invention for a terminal device;
FIG. 5 is a schematic diagram of an SSB reflective communication application scenario;
FIG. 6 is a flow chart of another embodiment of the method of the present invention for a network device;
FIG. 7 is a flow chart of another embodiment of the method of the present invention for a terminal device;
FIG. 8 is a schematic diagram of an embodiment of a network device;
FIG. 9 is a schematic diagram of an embodiment of a terminal device;
fig. 10 is a schematic structural diagram of a network device according to another embodiment of the present invention;
fig. 11 is a block diagram of a terminal device according to another embodiment of the present invention.
Detailed Description
For the purposes, technical solutions and advantages of the present application, the technical solutions of the present application will be clearly and completely described below with reference to specific embodiments of the present application and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
The following describes in detail the technical solutions provided by the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of an IRS enhanced multi-antenna wireless communication system.
IRS is a passive device, similar to dish antennas used in satellite receivers, that reflects signals to improve signal-to-noise ratio. The different phase shift patterns of its different meta-surfaces result in the incident signal being reflected as a light beam in different directions. IRS is a complement to traditional massive MIMO technology, unlike massive MIMO systems and cooperative relaying, although IRS also attempts to improve propagation conditions by deploying active hardware components, IRS requires little operating power and is therefore suitable for implementation in energy-limited systems. Furthermore, IRSs can naturally operate in full duplex mode without the need for expensive self-interference cancellation. Furthermore, IRSs are very thin materials that can be deployed on building facades and interior walls. Thus, once a legacy network is deployed, one or more IRSs may be flexibly deployed to mitigate detected coverage holes or to provide additional capacity in areas where needed.
The deployment of intermediate nodes in a conventional MIMO system facilitates both beamforming, as shown in fig. 1, with one IRS deployed in one system to facilitate communication between the multi-antenna transmitter and the user. An information signal is radiated from the transmitter, a direct path for communication between the transmitter and the user is possible, and at the same time the IRS receives the information signal and will reflect this signal, the main direction of which can be controlled by means of an infrared controller. In particular, a suitable phase shift is introduced on all meta-atoms to deliberately create a coherent combination of their respective scattered signals, thereby producing a signal beam focused on the user, the larger the surface, the narrower the beam, a strategy called energy focusing.
On the other hand, if there is no direct path due to severe shadowing or blockage, the transmitter should beamform the IRS. The IRS may then act as a non-amplified full duplex relay reflecting and focusing the signal to the terminal device UE to facilitate end-to-end communication. In fig. 1, consider a scenario in which a multi-antenna transmitter serves user 1 in the presence of user 2. It is assumed that the two UEs have different security levels, wherein the message of user 1 cannot be decoded on user 2. In this case, by adjusting the phase of the scattered signal to stop the signal at user 2, destructive reflection can be performed at the IRS, a strategy called energy nulling.
With these two principles, IRSs are expected to have wide applications in various communication systems, including interference management, coverage extension, and capability improvement, such as wireless communication systems, cognitive radio networks, physical layer security systems, and the like.
The intermediate node of the present application controls the waveform parameters of electromagnetic waves propagating through the communication channel by reflection, refraction, or the like to improve the performance of the communication system, and is not limited to the IRS technology.
Fig. 2 is a flowchart of an embodiment of a method according to the present application.
The embodiment of the application provides a beam management method of an intermediate node, which is used for a mobile communication system, wherein the mobile communication system comprises network equipment, an intermediate node device and user equipment, downlink information generated by the network equipment is directly received by the user equipment after being radiated by a transmitter, or is received by the user equipment after being reflected by the intermediate node device, and the beam management method comprises the following steps:
step 101, transmitting indication information of the beam direction of the intermediate node through downlink information, wherein the downlink information comprises first indication information for identifying the beam direction of the intermediate node.
One of the schemes of the application is: the downlink information comprises second indication information, and the second indication information comprises random access channel resources and random access preamble sequences corresponding to the beam direction of the intermediate node. Further, the downlink information includes third indication information, where the third indication information includes a correspondence between downlink SSB transport blocks or CSI-RS corresponding to the intermediate node beam direction.
Preferably, the downlink information is higher layer signaling (RRC signaling or MAC CE signaling); the downlink information includes at least one of the following information: mapping pattern period, SSB random access opportunity and intermediate node phase information. Alternatively, the downlink information may also be DCI signaling.
In another aspect of the present application, the first indication information includes all beam directions within a phase change period range of the intermediate node.
At this time, the downlink information may also be sent by broadcasting. For example, the first indication information is configured by terminal-specific higher layer signaling or is configured by common higher layer signaling; for another example, the first indication information terminal is configured by downlink control signaling dedicated to the first indication information terminal or configured by group common signaling.
Step 102, in the beam failure recovery process, switching to the beam direction indicated in the downlink information.
When the first indication information contains all beam directions in the phase change period range of the intermediate node, the terminal equipment can automatically select another beam special for the intermediate node when the current beam fails.
When the first indication information only comprises one beam direction special for the intermediate node, corresponding random access channel resources and a random access preamble sequence, and the current beam is invalid, the request network further indicates the other beam direction special for the terminal equipment and special for the intermediate node and the corresponding random access channel resources so as to switch to the other beam special for the intermediate node.
In the embodiments of fig. 3 to 4, in the system with the intermediate node, after the base station schedules a part of the terminals to transmit data after being reflected by the intermediate node, when the part of the terminals detect beam failure, the base station configures a reference signal for determining a new beam, the terminals detect the reference signal, obtain new beam information, and the terminals receive uplink random access resources and uplink random access sequences which are configured to the base station and are dedicated for beam failure recovery of the intermediate node system. Different from the uplink random access resource and the uplink random access sequence of the non-deployed intermediate node, the method avoids collision caused by beam recovery of the terminal which directly receives the base station signal and does not reflect the received signal through the intermediate node.
Fig. 3 is a flow chart of an embodiment of the method of the present invention for a network device.
The method for network equipment according to the embodiment of the first aspect of the application comprises the following steps:
step 201A, the network device receives a beam switch request, the beam switch request requiring an indication of a beam direction dedicated to an intermediate node.
Step 202A, the network device sends the downlink information, where the downlink information includes first indication information, second indication information, and third indication information.
The first indication information is used for identifying the beam direction of the intermediate node; the second indication information comprises random access channel resources and random access preamble sequences corresponding to the beam direction of the intermediate node; and the third indication information comprises a corresponding relation of a downlink SSB transmission block or a CSI-RS corresponding to the beam direction of the intermediate node.
Mode 1: the phase change of the intermediate node is periodic, and the downlink information is indicated by RRC signaling or MAC CE signaling. For example, information such as a mapping pattern period (Association pattern period), an SSB access opportunity (SSB-perRACH-timing), and the like is added to RRC or MAC CE signaling.
Mode 2: the phase change of the intermediate node is at the slot level, and the downlink information is indicated by DCI signaling. Considering that the DCI signaling overhead is large, the number of mappings between random access occasions and SSB blocks may be reduced. If the terminal is configured with CSI-RS for new beam measurement and beam management, terminal-specific signaling is required to indicate the mapping period and mapping relation between CSI-RS and random access time, for specifying RACH opportunity where a dedicated preamble is located within a certain time range.
Fig. 4 is a flow chart of an embodiment of the method of the present invention for a terminal device.
The method, which is described in the embodiment of the first aspect of the present application, is used for a terminal device, and includes the following steps:
step 301A, the terminal device receives the downlink information, where the downlink information includes first indication information, second indication information, and third indication information.
The first indication information is used for identifying the beam direction of the intermediate node; the second indication information comprises random access channel resources and random access preamble sequences corresponding to the beam direction of the intermediate node; and the third indication information comprises a corresponding relation of a downlink SSB transmission block or a CSI-RS corresponding to the beam direction of the intermediate node.
And 302A, when the current beam fails, the terminal equipment performs beam switching according to the beam direction indicated by the downlink information.
For example, the terminal receives configured second indication information, where the second indication information is configured by terminal-specific signaling, and the second indication information is a random access channel resource and a random access preamble sequence dedicated to the intermediate node and used for beam failure recovery.
Further, the third indication information received by the terminal is the terminal-specific signaling indication, and the third indication information is the beam correspondence between each random access channel and the preamble sequence and the SSB transport block or the CSI-RS of the base station.
Fig. 5 is a schematic diagram of an SSB reflective communication application scenario.
The phase of the intermediate node is dynamically adjusted by the base station for better coverage, so that the beam direction of the SSB block after the phase is dynamically adjusted is rotated, and the existing correspondence between the random access timing (RO) formed by the random access resource and the random access sequence and the SSB block is not applicable, so that the base station notifies the terminal of the mapping period of the SSB and the RACH and the mapping relationship between the SSB and the random access timing. The signaling of this mapping period and mapping relation cannot be broadcast by the system information anymore, indicating to the terminal by means of terminal specific signaling, considering that the phase of the intermediate node is dynamically changing.
Fig. 6 is a flow chart of another embodiment of the method of the present invention for a network device.
The method for network equipment according to the embodiment of the first aspect of the application comprises the following steps:
step 201B, the network device sends the downlink information, where the downlink information includes first indication information, where the first indication information includes all beam directions within a phase change period range of the intermediate node;
the base station signals the dynamically changed phase to the terminal, considering that the phase of the intermediate node is dynamically changed, and the base station dynamically adjusts the phase of the intermediate node for better coverage and the like, so that the beam direction of the SSB block after dynamically adjusting the phase is rotated.
Step 202B, the network device receives the beam switching request, and identifies the beam direction after switching.
Fig. 7 is a flow chart of another embodiment of the method of the present invention for a terminal device.
The method, which is described in the embodiment of the first aspect of the present application, is used for a terminal device, and includes the following steps:
step 301B, the terminal device receives the downlink information, where the downlink information includes first indication information, where the first indication information is used to identify a beam direction of an intermediate node, and the first indication information includes all beam directions in a phase change period range of the intermediate node;
in step 301B or other steps, the terminal device receives the existing uplink random access resource and uplink random access sequence for beam failure, and in step 301B, the terminal receives configured first indication information, which is generally phase information of an intermediate node, for example:
mode 1: the phase change of the intermediate node is periodic, indicated by RRC signaling or MAC CE signaling. The phase information of the intermediate node is added in RRC or MAC CE signaling.
Mode 2: the method for sending the broadcast-like information is used for sending the broadcast-like information to the terminals, and is suitable for judging the situation that a plurality of terminals need to know the phase information according to the beam failure request reported by the terminals. After receiving the beam failure request from the terminals, the base station periodically sends a high-layer public signaling instruction to the phases of the intermediate nodes of the terminals.
Mode 3: the phase change of the intermediate node is slot level, indicated with DCI signaling. And taking the fact that DCI signaling overhead is large into consideration, quantizing the phase information of the intermediate node, and indicating the quantized bits. If the indication is needed to a plurality of terminals, the indication can be carried out by defining a downlink control signaling scrambled by a phase-RNTI and sampling a group signaling, and the phase information is indicated to a group of terminals, so that the signaling overhead is reduced.
And step 302B, when the current beam fails, the terminal equipment selects a new beam direction in the all beam direction ranges to perform beam switching.
And the terminal calculates the rotation direction of the SSB block or the CSI-RS beam according to the obtained intermediate node phase information, and performs beam recovery by utilizing the corresponding random access time.
For example, the base station configures 64 SSB blocks or CSI-RS beam directions, the terminal measures the best beam direction as the fourth beam direction, obtains the corresponding best SSB block or CSI-RS beam direction which is not reflected by the intermediate node according to the phase information of the intermediate node, and uses the random access time mapped by the first SSB block or CSI-RS beam to access. The base station knows the optimal downlink wave beam reported by the terminal as the first wave beam according to the information of the random access time, and sends the information by using the first wave beam in the subsequent transmission
Fig. 8 is a schematic diagram of an embodiment of a network device.
The embodiment of the application also provides a network device, and the network device is used for: and sending the downlink information and the service signal, and receiving the uplink beam switching request information.
In order to implement the above technical solution, the network device 400 provided in the present application includes a network sending module 401, a network determining module 402, and a network receiving module 403.
The network sending module is used for generating and sending the downlink information and comprises at least one of the first indication information, the second indication information and the third indication information; and the device is also used for transmitting downlink service signals and reflecting the downlink service signals to the terminal equipment through the intermediate node.
The network determining module is used for determining beam direction information and time-frequency resource information which are special for the intermediate node, and random access channel resources and random access preamble sequences corresponding to the beam direction; a downlink SSB transport block or CSI-RS corresponding to the intermediate node beam direction, and thus the downlink information can be produced.
The network receiving module is configured to receive uplink beam switching request information.
Specific methods for implementing the functions of the network sending module, the network determining module and the network receiving module are described in the embodiments of the methods of the present application, and are not described here again.
The network device described in the present application may be a base station device or a network side processing device connected to a base station.
Fig. 9 is a schematic diagram of an embodiment of a terminal device.
The application also proposes a terminal device, using the method of any one of the embodiments of the application, the terminal device being configured to: receiving the downlink information; and the method is also used for carrying out beam switching according to the downlink information when the current beam fails.
In order to implement the above technical solution, the terminal device 500 provided in the present application includes a terminal sending module 501, a terminal determining module 502, and a terminal receiving module 503.
The terminal receiving module is configured to receive the downlink information, and includes at least one of the first indication information, the second indication information, and the third indication information; and is also configured to receive a downlink traffic signal from the base station reflected by the intermediate node.
The terminal determining module is configured to determine beam switching, in an embodiment of the present application, determine a switched beam direction and corresponding time-frequency domain resource information, for example, a random access channel resource and a random access preamble sequence corresponding to the beam direction, and determine a downlink SSB transport block or CSI-RS corresponding to the beam direction of the intermediate node according to downlink information. In another embodiment of the present application, the method is used for determining all phase information dedicated to the intermediate node according to downlink information, further determining beam direction information, and further selecting a new beam according to a rule of beam optimization.
The terminal sending module is used for sending a beam switching request.
The terminal device described in the application may refer to a mobile terminal device.
Fig. 10 shows a schematic structural diagram of a network device according to another embodiment of the present invention. As shown, the network device 600 includes a processor 601, a wireless interface 602, and a memory 603. Wherein the wireless interface may be a plurality of components, i.e. comprising a transmitter and a receiver, providing a means for communicating with various other apparatuses over a transmission medium. The wireless interface performs the communication function with the terminal device, and processes wireless signals through the receiving and transmitting device, and data carried by the signals are communicated with the memory or the processor through the internal bus structure. The memory 603 contains a computer program for executing any of the embodiments of the present application, which computer program runs or changes on the processor 601. When the memory, processor, wireless interface circuit are connected through a bus system. The bus system includes a data bus, a power bus, a control bus, and a status signal bus, which are not described here again.
Fig. 11 is a block diagram of a terminal device according to another embodiment of the present invention. The terminal device 700 comprises at least one processor 701, a memory 702, a user interface 703 and at least one network interface 704. The various components in terminal device 700 are coupled together by a bus system. Bus systems are used to enable connected communication between these components. The bus system includes a data bus, a power bus, a control bus, and a status signal bus.
The user interface 703 may include a display, keyboard, or pointing device, such as a mouse, trackball, touch pad, or touch screen, among others.
The memory 702 stores executable modules or data structures. The memory may store an operating system and application programs. The operating system includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, for implementing various basic services and processing hardware-based tasks. The application programs include various application programs such as a media player, a browser, etc. for implementing various application services.
In an embodiment of the present invention, the memory 702 contains a computer program that executes any of the embodiments of the present application, the computer program running or changing on the processor 701.
The memory 702 contains a computer readable storage medium, and the processor 701 reads the information in the memory 702 and performs the steps of the above method in combination with its hardware. In particular, the computer readable storage medium has stored thereon a computer program which, when executed by the processor 701, implements the steps of the method embodiments as described in any of the embodiments above.
The processor 701 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the methods of the present application may be performed by integrated logic circuitry in hardware or instructions in software in processor 701. The processor 701 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, an off-the-shelf programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component. The disclosed methods, steps, and logic blocks in the embodiments of the present invention may be implemented or performed. 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 may be embodied directly in the execution of a hardware decoding processor, or in the execution of a combination of hardware and software modules in a decoding processor.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. In one typical configuration, the device of the present application includes one or more processors (CPUs), an input/output user interface, a network interface, and memory.
Furthermore, 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, and the like) having computer-usable program code embodied therein.
Accordingly, the present application also proposes a computer readable medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method according to any of the embodiments of the present application. For example, the memory 603, 702 of the present invention may include non-volatile memory in a computer-readable medium, random Access Memory (RAM) and/or non-volatile memory, etc., such as read-only memory (ROM) or flash RAM.
Computer readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of storage media for a computer 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 Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device. Computer-readable media, as defined herein, does not include transitory computer-readable media (transmission media), such as modulated data signals and carrier waves.
Based on the embodiments of fig. 8 to 11, the present application also proposes a mobile communication system comprising at least 1 embodiment of any one of the terminal devices of the present application and/or at least 1 embodiment of any one of the network devices of the present application.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.
In the present application, "first", "second" and "third" are used to distinguish between a plurality of objects having the same name, and are not intended to indicate a sequence or a size, but are not intended to have any particular meaning unless otherwise specified.
The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and changes may be made to the present application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.
Claims (14)
1. A beam management method of an intermediate node, for a mobile communication system, where the mobile communication system includes a network device, an intermediate node device and a terminal device, and a service signal generated by the network device is radiated by a transmitter and then directly received by the terminal device, or is reflected by the intermediate node device and then received by the terminal device, where the method includes the following steps:
the downlink information sent from the network equipment to the terminal equipment comprises first indication information, second indication information and third indication information;
the first indication information is used for identifying the beam direction of the intermediate node; the second indication information comprises random access time corresponding to the beam direction of the intermediate node; the third indication information comprises a corresponding relation of a downlink SSB transmission block or a CSI-RS corresponding to the beam direction of the intermediate node;
the beam direction of the SSB transmission block after the phase adjustment of the intermediate node is rotated, the corresponding relation between the random access opportunity and the SSB of the system information broadcast is inapplicable, and the mapping relation between the SSB and the random access opportunity is indicated by a terminal special signaling;
and in the beam failure recovery process, switching to the beam direction indicated in the downlink information, and automatically selecting another beam for the intermediate node when the current beam fails.
2. The beam management method of an intermediate node of claim 1,
the first indication information includes all beam directions within a phase change period range of the intermediate node.
3. The beam management method of an intermediate node of claim 1,
the downlink information is RRC signaling or MAC CE signaling;
the downlink information includes at least one of the following information:
mapping pattern period, SSB random access opportunity and intermediate node phase information.
4. The beam management method of an intermediate node of claim 1,
the downlink information is DCI signaling.
5. The beam management method of an intermediate node of claim 1,
and the downlink signaling is sent in a broadcasting mode.
6. The beam management method of an intermediate node according to any of claims 1-5, for a network device, comprising the steps of:
the network equipment receives a beam switching request, and requests to indicate the beam direction special for the intermediate node;
the network equipment sends the downlink information, wherein the downlink information comprises first indication information, second indication information and third indication information;
the first indication information is used for identifying the beam direction of the intermediate node;
the second indication information comprises random access channel resources and random access preamble sequences corresponding to the beam direction of the intermediate node;
and the third indication information comprises a corresponding relation of a downlink SSB transmission block or a CSI-RS corresponding to the beam direction of the intermediate node.
7. The beam management method for an intermediate node according to any one of claims 1 to 5, for a network device,
the network equipment sends the downlink information, wherein the downlink information comprises first indication information, and the first indication information comprises all beam directions in a phase change period range of an intermediate node;
the network equipment receives the beam switching request and identifies the beam direction after switching.
8. The beam management method for an intermediate node according to any one of claims 1 to 5, for a terminal device,
the terminal equipment receives the downlink information, wherein the downlink information comprises first indication information, second indication information and third indication information;
the first indication information is used for identifying the beam direction of the intermediate node;
the second indication information comprises random access channel resources and random access preamble sequences corresponding to the beam direction of the intermediate node;
the third indication information comprises a corresponding relation of a downlink SSB transmission block or a CSI-RS corresponding to the beam direction of the intermediate node;
and the terminal equipment performs beam switching according to the beam direction indicated by the downlink information when the current beam fails.
9. The beam management method for an intermediate node according to any one of claims 1 to 5, for a terminal device,
the terminal equipment receives the downlink information, wherein the downlink information comprises first indication information, and the first indication information is used for identifying the beam direction of the intermediate node;
the first indication information comprises all beam directions in the phase change period range of the intermediate node;
and when the current beam fails, the terminal equipment selects a new beam direction in the whole beam direction range and performs beam switching.
10. A network device configured to implement the method of any one of claims 1 to 7, wherein the network device is configured to send the downlink information.
11. A terminal device, configured to implement the method of any one of claims 1 to 5 and 8 to 9, where the terminal device is configured to receive the downlink information; and the method is also used for carrying out beam switching according to the downlink information when the current beam fails.
12. A communication device, comprising: memory, a processor and a computer program stored on the memory and executable on the processor, which when executed by the processor performs the steps of the method according to any one of claims 1 to 9.
13. A computer readable medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method according to any of claims 1 to 9.
14. A mobile communication system comprising at least 1 terminal device according to claim 11 and/or at least 1 network device according to claim 10.
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| WO2023216193A1 (en) * | 2022-05-12 | 2023-11-16 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for communication over ris |
| WO2023225927A1 (en) * | 2022-05-26 | 2023-11-30 | Qualcomm Incorporated | Reflective intelligent surface reference signals |
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| CN117858192A (en) * | 2022-09-29 | 2024-04-09 | 大唐移动通信设备有限公司 | Information processing method, device and readable storage medium |
| CN116249212A (en) * | 2022-12-27 | 2023-06-09 | 中国信息通信研究院 | Beam switching method and device for intermediate node |
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