CN110971281B - Beam scanning method, beam configuration method, terminal and network equipment - Google Patents

Beam scanning method, beam configuration method, terminal and network equipment Download PDF

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Publication number
CN110971281B
CN110971281B CN201811142612.9A CN201811142612A CN110971281B CN 110971281 B CN110971281 B CN 110971281B CN 201811142612 A CN201811142612 A CN 201811142612A CN 110971281 B CN110971281 B CN 110971281B
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link
beam scanning
synchronous signal
beams
maximum number
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CN110971281A (en
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任晓涛
赵锐
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Datang Mobile Communications Equipment Co Ltd
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Datang Mobile Communications Equipment Co Ltd
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Priority to PCT/CN2019/106933 priority patent/WO2020063471A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0868—Hybrid systems, i.e. switching and combining
    • H04B7/088—Hybrid systems, i.e. switching and combining using beam selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/006—Quality of the received signal, e.g. BER, SNR, water filling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality

Abstract

The invention discloses a beam scanning method, a beam configuration method, a terminal and network equipment. The beam scanning method comprises the following steps: determining the maximum number of beams in beam scanning of the synchronous signal blocks in the through link of the terminal according to the frequency band use condition of the through link, the subcarrier interval and/or the number of the synchronous signal blocks included in each time slot; the synchronous signal block is a combination block of a direct link synchronous signal and a physical direct link broadcast channel; and performing beam scanning of the synchronous signal block according to the maximum number of the beams. The scheme of the invention can complete SSB beam scanning in fewer synchronous subframes. The occupation of resources is reduced, more transmission time is reserved for service transmission, and the resource utilization performance of the Sidelink data transmission is improved.

Description

Beam scanning method, beam configuration method, terminal and network equipment
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a beam scanning method, a beam configuration method, a terminal, and a network device.
Background
In a 5G NR (new Radio Access technology) V2X (Vehicle-to-event) system, a PC5 Port (Proximity Communication Port 5) Sidelink (direct link, secondary link, or bypass) is used for direct Communication between terminals. Before the service data transmission is carried out, synchronization is established between two terminals which need to communicate at first at a port of the PC 5. The method for establishing synchronization is that one terminal A sends a synchronization signal, the other terminal B receives the synchronization signal sent by the terminal A, once the terminal B successfully receives and demodulates, the two terminals can establish synchronization, and preparation is made for the next step of direct communication.
The Synchronization Signal of the NR UU port (interface of the user and the network) is carried by SSB (Synchronization Signal Block). The SSBs include a PSS (Primary Synchronization Signal), a SSS (Secondary Synchronization Signal), a PBCH (Physical Broadcast Channel), and the like, 2 SSB blocks are carried in each Slot, and there is no time domain repetition mechanism between the PSS and the SSS.
In order to complete Beam measurement and Beam selection, the SSB at the NR UU port needs to perform Beam scanning (Beam scanning), where the Beam scanning is that the base station transmits the SSB once in each possible Beam direction within a certain time interval (5ms), and then the terminal measures the SSB signal strength of each Beam and reports the measurement result to the base station, and the base station selects the most suitable Beam to transmit data to the terminal according to the measurement result reported by the terminal. The number of directions in which beams need to be scanned is also different according to different carrier frequencies and different subcarrier intervals. The maximum values of the SSB beam scanning candidate directions in different carrier frequency ranges are respectively: 4/8/64, the number of beam scanning directions actually deployed cannot exceed this maximum.
In R15LTE V2X communication, before a UE is ready to perform service transmission on a Sidelink, Synchronization needs to be acquired on the Sidelink first, and in order to expand the coverage of a Synchronization Signal, time domain repetition of a PSSS (Primary Sidelink Synchronization Signal)/SSSS (Secondary Sidelink Synchronization Signal) Signal needs to be performed to enhance the detection performance of the Synchronization Signal.
As shown in fig. 1, is a design diagram of an R15LTE V2X Synchronization Signal Block (SSB). The abscissa is the time domain and each column represents one OFDM symbol. The ordinate is the frequency domain, which in the figure is 6 RB. One Slot accommodates an SSB, which includes PSSS, SSSS, PSBCH (Physical Sidelink Broadcast Channel) and the necessary DMRS (Demodulation Reference Signal).
As shown in fig. 1, the synchronization signal block in R15LTE V2X Sidelink is transmitted only once by using an omnidirectional antenna, which makes it impossible for the UE to increase the signal strength of the synchronization signal block by using a beam scanning method when transmitting and receiving the synchronization signal block, so that the coverage of the R15LTE V2X Sidelink synchronization broadcast information is small.
With the emergence of 5G NR, the technology of vehicle networking is promoted to be further developed so as to meet the requirements of new application scenarios. The 5G NR supports a larger bandwidth, flexible configuration of subcarrier spacing, and transmission of synchronization signals and broadcast information in the form of SSB beam scanning. This brings new challenges to the design of the physical layer structure of NR V2X, and the transmission and reception of synchronization signals and broadcast information performed by the UE on the synchronization subframe need to be redesigned, and an SSB beam scanning mechanism needs to be introduced to meet the requirement of NR V2X.
In addition, the existing SSB beam scanning mechanism in NR needs to complete beam scanning within 5ms, for V2X, service data cannot be sent in the beam scanning process, and V2X has a high requirement on the delay of the service data, and generally can only allow 1-2 ms of beam scanning time, so the current beam scanning mechanism in NR, which needs to take 5ms, cannot meet the requirement of NR V2X, and a mechanism capable of completing beam scanning in a shorter time needs to be designed.
Disclosure of Invention
The embodiment of the invention provides a beam scanning method, a beam configuration method, a terminal and network equipment. SSB beam scanning can be accomplished in fewer simultaneous subframes. The occupation of resources is reduced, more transmission time is reserved for service transmission, and the resource utilization performance of the Sidelink data transmission is improved.
In order to solve the above technical problem, an embodiment of the present invention provides the following technical solutions:
a beam scanning method is applied to a terminal, and the method comprises the following steps:
determining the maximum number of beams in beam scanning of the synchronous signal blocks in the through link of the terminal according to the frequency band use condition of the through link, the subcarrier interval and/or the number of the synchronous signal blocks included in each time slot; the synchronous signal block is a combination block of a direct link synchronous signal and a physical direct link broadcast channel;
and performing beam scanning of the synchronous signal block according to the maximum number of the beams.
Determining the maximum number of beams in beam scanning of a synchronous signal block in a through link of the terminal according to the frequency band use condition of the through link, the subcarrier interval and/or the number of the synchronous signal blocks included in each time slot, wherein the determining comprises the following steps:
and determining the maximum number of beams in beam scanning of the synchronous signal blocks in the through link of the terminal according to the frequency band use condition of the through link, the subcarrier interval and/or the number of the synchronous signal blocks included in each time slot in a mode of pre-configuring or receiving notification signaling.
Determining the maximum number of beams in beam scanning of a synchronous signal block in a through link of the terminal according to the frequency band use condition of the through link, the subcarrier interval and/or the number of the synchronous signal blocks included in each time slot in a pre-configured manner, wherein the determining comprises the following steps:
after a terminal is started, automatically reading a corresponding relation table of frequency band use conditions, subcarrier intervals and/or the number of synchronous signal blocks included in each time slot, which are pre-stored in the terminal, and the maximum number of beams in the beam scanning of the synchronous signal blocks in a through link of the terminal according to the corresponding relation table; or
After a terminal is started, acquiring a corresponding relation table of frequency band use conditions, subcarrier intervals and/or the number of synchronous signal blocks included in each time slot, which are pre-stored in network equipment, and the maximum number of beams in the beam scanning of the synchronous signal blocks in a through link of the terminal, and determining the maximum number of beams in the beam scanning of the synchronous signal blocks in the through link of the terminal according to the corresponding relation table.
Determining the maximum number of beams in beam scanning of a synchronous signal block in a through link of the terminal according to the frequency band use condition of the through link, the subcarrier interval and/or the number of the synchronous signal blocks included in each time slot by receiving a notification signaling, wherein the method comprises the following steps of:
and receiving a notification signaling from a network device, wherein the notification signaling carries the maximum number of beams in beam scanning of the synchronous signal blocks in the through link of the terminal determined by the network device according to the frequency band use condition of the through link, the subcarrier interval and/or the number of the synchronous signal blocks included in each time slot.
Wherein the notification signaling is: any one of a broadcast message, downlink control information DCI, and radio resource control RRC signaling.
Wherein performing beam scanning of the synchronization signal block according to the maximum number of beams in the beam scanning includes:
determining a scanning pattern of the synchronization signal block according to the maximum number of beams in the beam scanning;
and performing beam scanning of the synchronous signal block according to the scanning pattern.
Wherein the scan pattern comprises: each 1 subframe comprises at least one Slot, each 1 Slot comprises at least 3 synchronous signal blocks, and each 1 synchronous signal block at least comprises: primary through link synchronization signal PSSS, secondary through link synchronization signal SSSS, and physical through link broadcast channel PSBCH.
Wherein determining the scan pattern of the synchronization signal block according to the maximum number of beams in the beam scanning comprises: if the maximum number of beams in the beam scanning is a first value, the system bandwidth is a first system bandwidth, and the subcarrier interval is a first subcarrier interval, determining the scanning pattern of the synchronization signal block as: each 1 subframe comprises at least one Slot, each 1 Slot comprises N1 synchronous signal blocks, and each 1 synchronous signal block comprises: a primary direct link synchronization signal PSSS located on one OFDM symbol, a secondary direct link synchronization signal SSSS located on one OFDM symbol, a physical direct link broadcast channel PSBCH located on one OFDM symbol, and a demodulation pilot reference signal DMRS located on one OFDM symbol, said N1 being greater than or equal to 3.
Wherein determining the scan pattern of the synchronization signal block according to the maximum number of beams in the beam scanning comprises: if the maximum number of beams in the beam scanning is a second value, the system bandwidth is a second system bandwidth, and the subcarrier interval is a second subcarrier interval, determining the scanning pattern of the synchronization signal block as: each 1 subframe comprises at least one Slot, each 1 Slot comprises N2 synchronous signal blocks, and each 1 synchronous signal block comprises: a primary direct link synchronization signal PSSS located on one OFDM symbol, a secondary direct link synchronization signal SSSS located on a part of subcarriers of one OFDM symbol, and a physical direct link broadcast channel PSBCH located on at least one OFDM symbol, said N2 being greater than or equal to 3.
Wherein determining the scan pattern of the synchronization signal block according to the maximum number of beams in the beam scanning comprises: if the maximum number of beams in the beam scanning is a third value, the system bandwidth is a third system bandwidth, and the subcarrier interval is a third subcarrier interval, determining the scanning pattern of the synchronization signal block as: each 1 subframe comprises at least one Slot, each 1 Slot comprises N3 synchronous signal blocks, and each 1 synchronous signal block comprises: a primary direct link synchronization signal PSSS located on one OFDM symbol, a secondary direct link synchronization signal SSSS located on a part of subcarriers of one OFDM symbol, and a physical direct link broadcast channel PSBCH located on at least two OFDM symbols, said N3 being greater than or equal to 3.
The embodiment of the invention also provides a method for configuring the number of wave beams, which is applied to network equipment and comprises the following steps:
configuring the maximum number of beams in beam scanning of the synchronous signal blocks in the through link according to the frequency band use condition of the through link, the subcarrier interval and/or the number of the synchronous signal blocks included in each time slot, so that the terminal performs the beam scanning of the synchronous signal blocks according to the maximum number of the beams; the synchronization signal block is a combination block of a through link synchronization signal and a physical through link broadcast channel.
The configuring the maximum number of beams in beam scanning of the synchronous signal blocks in the through link according to the frequency band use condition of the through link, the subcarrier interval and/or the number of the synchronous signal blocks included in each time slot comprises the following steps:
and sending a notification signaling to a terminal, wherein the notification signaling carries the maximum number of beams in beam scanning of the synchronous signal blocks in the through link, which is determined by the network equipment according to the frequency band use condition of the through link, the subcarrier interval and/or the number of the synchronous signal blocks included in each time slot.
Wherein the notification signaling is: any one of a broadcast message, downlink control information DCI, and radio resource control RRC signaling.
An embodiment of the present invention further provides a terminal, including:
the processor is used for determining the maximum number of beams in beam scanning of the synchronous signal blocks in the through link of the terminal according to the frequency band use condition of the through link, the subcarrier interval and/or the number of the synchronous signal blocks included in each time slot, wherein the synchronous signal blocks are combination blocks of synchronous signals of the through link and broadcast channels of a physical through link;
a transceiver for performing beam scanning of the synchronization signal block according to the maximum number of beams.
An embodiment of the present invention further provides a beam scanning apparatus for synchronizing signal blocks, including:
the processing module is used for determining the maximum number of beams in beam scanning of the synchronous signal blocks in the through link of the terminal according to the frequency band use condition of the through link, the subcarrier interval and/or the number of the synchronous signal blocks included in each time slot, wherein the synchronous signal blocks are combination blocks of synchronous signals of the through link and broadcast channels of a physical through link;
and the transceiver module is used for scanning the beams of the synchronous signal block according to the maximum number of the beams.
An embodiment of the present invention further provides a terminal, including: a processor configured to perform the following functions: determining the maximum number of beams in beam scanning of a synchronous signal block in a through link of a terminal according to the frequency band use condition of the through link, the subcarrier interval and/or the number of the synchronous signal blocks included in each time slot, wherein the synchronous signal block is a combined block of a synchronous signal of the through link and a broadcast channel of a physical through link; and performing beam scanning of the synchronous signal block according to the maximum number of the beams.
An embodiment of the present invention further provides a network device, including:
the processor is used for configuring the maximum number of beams in beam scanning of the synchronous signal blocks in the through link according to the frequency band use condition of the through link, the subcarrier interval and/or the number of the synchronous signal blocks included in each time slot, so that the terminal performs the beam scanning of the synchronous signal blocks according to the maximum number of the beams; the synchronization signal block is a combination block of a through link synchronization signal and a physical through link broadcast channel.
An embodiment of the present invention further provides a device for configuring the number of beams, including:
the processing module is used for configuring the maximum number of beams in beam scanning of the synchronous signal blocks in the through link according to the frequency band use condition of the through link, the subcarrier interval and/or the number of the synchronous signal blocks included in each time slot, so that the terminal performs the beam scanning of the synchronous signal blocks according to the maximum number of the beams; the synchronization signal block is a combination block of a through link synchronization signal and a physical through link broadcast channel.
An embodiment of the present invention further provides a network device, including: a processor configured to perform the following functions: configuring the maximum number of beams in beam scanning of the synchronous signal blocks in the through link according to the frequency band use condition of the through link, the subcarrier interval and/or the number of the synchronous signal blocks included in each time slot, so that the terminal performs the beam scanning of the synchronous signal blocks according to the maximum number of the beams; the synchronization signal block is a combination block of a through link synchronization signal and a physical through link broadcast channel.
The embodiment of the invention also provides a beam scanning method, which comprises the following steps:
obtaining a scanning pattern of a synchronization signal block of a through link; the synchronous signal block is a combination block of a direct link synchronous signal and a physical direct link broadcast channel; in the scanning pattern, each 1 subframe comprises at least one Slot, and each 1 Slot comprises at least 3 synchronous signal blocks;
and performing beam scanning of the synchronous signal block according to the scanning pattern.
Wherein the scan pattern comprises: each 1 subframe comprises at least one Slot, each 1 Slot comprises at least 3 synchronous signal blocks, and each 1 synchronous signal block at least comprises: primary through link synchronization signal PSSS, secondary through link synchronization signal SSSS, and physical through link broadcast channel PSBCH.
Wherein, if the maximum number of beams in the beam scanning is a first value, the system bandwidth is a first system bandwidth, and the subcarrier spacing is a first subcarrier spacing, in the scanning pattern: each 1 sync signal block includes: a primary through-link synchronization signal PSSS located on one OFDM symbol, a secondary through-link synchronization signal SSSS located on one OFDM symbol, a physical through-link broadcast channel PSBCH located on one OFDM symbol, and a demodulation pilot reference signal DMRS located on one OFDM symbol.
Wherein, if the maximum number of beams in the beam scanning is a second value, the system bandwidth is a second system bandwidth, and the subcarrier interval is a second subcarrier interval, in the scanning pattern: each 1 sync signal block includes: a primary through-link synchronization signal PSSS located on one OFDM symbol, a secondary through-link synchronization signal SSSS located on a portion of subcarriers of one OFDM symbol, and a physical through-link broadcast channel PSBCH located on at least one OFDM symbol.
Wherein, if the maximum number of beams in the beam scanning is a third value, the system bandwidth is a third system bandwidth, and the subcarrier interval is a third subcarrier interval, in the scanning pattern: each 1 sync signal block includes: a primary through-link synchronization signal PSSS located on one OFDM symbol, a secondary through-link synchronization signal SSSS located on a portion of subcarriers of one OFDM symbol, and a physical through-link broadcast channel PSBCH located on at least two OFDM symbols.
An embodiment of the present invention further provides a terminal, including:
a processor for obtaining a scan pattern of a synchronization signal block of a through link; the synchronous signal block is a combination block of a direct link synchronous signal and a physical direct link broadcast channel; in the scanning pattern, each 1 subframe comprises at least one Slot, and each 1 Slot comprises at least 3 synchronous signal blocks;
a transceiver for performing beam scanning of the synchronization signal block according to the scanning pattern.
An embodiment of the present invention further provides a beam scanning apparatus for synchronizing signal blocks, including:
a processing module for obtaining a scanning pattern of a synchronization signal block of a through link; the synchronous signal block is a combination block of a direct link synchronous signal and a physical direct link broadcast channel; in the scanning pattern, each 1 subframe comprises at least one Slot, and each 1 Slot comprises at least 3 synchronous signal blocks;
and the transceiver module is used for carrying out beam scanning on the synchronous signal block according to the scanning pattern.
An embodiment of the present invention further provides a terminal, including: a processor configured to perform the following functions: obtaining a scanning pattern of a synchronization signal block of a through link; the synchronous signal block is a combination block of a direct link synchronous signal and a physical direct link broadcast channel; performing beam scanning of the synchronization signal block according to the scanning pattern; in the scanning pattern, each 1 subframe comprises at least one Slot, and each 1 Slot comprises at least 3 synchronous signal blocks.
Embodiments of the present invention also provide a computer storage medium including instructions that, when executed on a computer, cause the computer to perform the method as described above. The embodiment of the invention has the beneficial effects that:
in the above embodiments of the present invention, the maximum number of beams in beam scanning of a synchronization signal block in a through link of a terminal is determined according to the frequency band usage of the through link, the subcarrier interval, and/or the number of synchronization signal blocks included in each time slot; the synchronous signal block is a combination block of a direct link synchronous signal and a physical direct link broadcast channel; and performing beam scanning of the synchronous signal block according to the maximum number of the beams. SSB beam scanning can be accomplished in fewer simultaneous subframes. The occupation of resources is reduced, more transmission time is reserved for service transmission, and the resource utilization performance of the Sidelink data transmission is improved.
Drawings
Fig. 1 is a design diagram of an R15LTE V2X Sidelink synchronization signal block;
fig. 2 is a flowchart illustrating a method for transmitting a signal according to an embodiment of the present invention;
fig. 3 is a schematic diagram illustrating the manner of signaling to determine the number of beams;
FIG. 4 is a diagram illustrating an example of a first manner of transmitting a synchronization signal block;
FIG. 5 is a diagram illustrating another example of a first manner of transmitting a synchronization signal block;
FIG. 6 is a diagram of a second manner of transmitting a synchronization signal block;
FIG. 7 is a diagram of a third manner of transmitting a synchronization signal block;
FIG. 8 is a block diagram of a terminal;
fig. 9 is a schematic diagram of a network device architecture.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
As shown in fig. 2, an embodiment of the present invention provides a beam scanning method, including:
step 21, determining the maximum number of beams in beam scanning of the synchronous signal blocks in the through link of the terminal according to the frequency band use condition of the through link, the subcarrier interval and/or the number of the synchronous signal blocks included in each time slot; the synchronous signal block is a combination block of a direct link synchronous signal and a physical direct link broadcast channel; direct link synchronization signals, such as PSSS, SSSS, etc., physical direct link broadcast channels, such as PSBCH, etc.;
specifically, the maximum number of beams in the beam scanning of the synchronization signal block in the through link of the terminal may be determined according to the frequency band usage of the through link, the subcarrier interval, and/or the number of synchronization signal blocks included in each timeslot by means of pre-configuration or receiving notification signaling.
And step 22, performing beam scanning of the synchronous signal block according to the maximum number of the beams.
The embodiment can complete SSB beam scanning in fewer synchronous subframes, reduce the occupation of resources, reserve more transmission time for service transmission and improve the resource utilization performance of Sidelink data transmission.
In a specific embodiment of the present invention, in step 21, determining, in a preconfigured manner, a maximum number of beams in beam scanning of a synchronization signal block in a through link of the terminal according to a frequency band usage of the through link, a subcarrier interval, and/or a number of synchronization signal blocks included in each timeslot, where the determining includes:
after a terminal is started, automatically reading a corresponding relation table of frequency band use conditions, subcarrier intervals and/or the number of synchronous signal blocks included in each time slot, which are pre-stored in the terminal, and the maximum number of beams in the beam scanning of the synchronous signal blocks in a through link of the terminal according to the corresponding relation table; or
After a terminal is started, acquiring a corresponding relation table of frequency band use conditions, subcarrier intervals and/or the number of synchronous signal blocks included in each time slot, which are pre-stored in network equipment, and the maximum number of beams in the beam scanning of the synchronous signal blocks in a through link of the terminal, and determining the maximum number of beams in the beam scanning of the synchronous signal blocks in the through link of the terminal according to the corresponding relation table.
The concrete implementation is as follows: for example, after the terminal is powered on, the preset table of "frequency band use condition", "subcarrier spacing (SCS) setting condition" and/or "number of SSBs contained in each Slot" stored in the terminal and the maximum number of beams in the SSB beam scanning of the through link is automatically read, and then the maximum number of beams in the SSB beam scanning of the through link is determined according to the correspondence in the table.
After the terminal is powered on, a preset table of "frequency band use condition", "subcarrier interval setting condition" and/or "number of SSBs included in each Slot" sent by the base station and the maximum number of beams in the SSB beam scan of the through link may be read from the base station side.
The preset "frequency band use condition", "subcarrier interval setting condition", and/or one possible condition of the corresponding table of the "number of SSBs contained in each Slot" and the maximum number of beams in the SSB beam scanning of the through link, are shown in table 1 below:
Figure BDA0001816122980000101
TABLE 1
The embodiment is simple and direct, does not occupy an air interface or a Sildelink signaling, and has low overhead.
In a specific embodiment of the present invention, in step 21, determining, by receiving a notification signaling, a maximum number of beams in beam scanning of a synchronization signal block in a through link of the terminal according to a frequency band usage condition of the through link, a subcarrier interval, and/or a number of synchronization signal blocks included in each timeslot, where the determining includes:
receiving a notification signaling from a network device, where the notification signaling carries a correspondence table between the network device and the maximum number of beams in beam scanning of a synchronization signal block in a through link of the terminal according to a frequency band use condition of the through link, a subcarrier interval and/or the number of the synchronization signal blocks included in each time slot, and according to the correspondence table, determining the maximum number of beams in beam scanning of the synchronization signal block in the through link of the terminal.
Wherein the notification signaling is: any one of a broadcast message, downlink control information DCI, and radio resource control RRC signaling.
The concrete implementation is as follows: the air interface signaling notification includes multiple possible methods, for example, the base station may notify the maximum number of beams in the SSB beam scanning of the terminal through link through a broadcast message; or the base station informs the maximum number of beams in SSB beam scanning of the through link of the terminal through a dynamic DCI signaling in the PDCCH; it may also be the maximum number of beams in the SSB beam sweep that the base station informs the terminal of the through link through RRC signaling.
As shown in fig. 3, the air interface signaling configuration method in this embodiment is relatively flexible in correspondence between "frequency band use condition", "subcarrier interval setting condition", and/or "number of SSBs included in each Slot" and the maximum number of beams in SSB beam scanning of the through link, and can perform dynamic or semi-static adjustment, which is simple and direct.
In an embodiment of the present invention, the step 22 may specifically include:
step 221, determining a scanning pattern of the synchronization signal block according to the maximum number of beams in the beam scanning;
step 222, performing beam scanning of the synchronization signal block according to the scanning pattern.
Wherein the scan pattern is: each 1 subframe comprises at least one Slot (Slot), each 1 Slot comprises at least 3 synchronization signal blocks, and each 1 synchronization signal block at least comprises: primary through link synchronization signals (PSSS), secondary through link synchronization signals (SSSS), and physical through link broadcast channel (PSBCH).
A first implementation of step 221 includes: if the maximum number of beams in the beam scanning is a first value, the system bandwidth is a first system bandwidth, and the subcarrier interval is a first subcarrier interval, determining the scanning pattern of the synchronization signal block as: each 1 subframe comprises at least one Slot, each 1 Slot comprises N1 synchronous signal blocks, and each 1 synchronous signal block comprises: PSSS located on one OFDM symbol, SSSS located on one OFDM symbol, PSBCH located on one OFDM symbol, and DMRS located on one OFDM symbol, the N1 being greater than or equal to 3.
Specifically, in this embodiment, when the system bandwidth is 50RB, the subcarrier spacing is 30KHz, and 3 SSBs are included in every 1 Slot, it is determined that the maximum number of SSB beam scans is 6, so that the SSB beam scans can be completed in 1ms (including 2 slots), that is, the transmission of 6 SSB beams is completed. The PSSS, SSSS, PSBCH, DMRS signals in each SSB occupy one symbol, and the order of the 4 contents can be adjusted. Two implementations of the distribution pattern are shown in fig. 4 and fig. 5, in this embodiment, 3 SSBs can be accommodated in one Slot, which is beneficial to complete the beam scanning in a short time.
A second implementation of step 221 includes: if the maximum number of beams in the beam scanning is a second value, the system bandwidth is a second system bandwidth, and the subcarrier interval is a second subcarrier interval, determining the scanning pattern of the synchronization signal block as: each 1 subframe comprises at least one Slot, each 1 Slot comprises N2 synchronous signal blocks, and each 1 synchronous signal block comprises: PSSS located on one OFDM symbol, SSSS located on a partial subcarrier of one OFDM symbol, and PSBCH located on at least one OFDM symbol, the N2 being greater than or equal to 3.
In specific implementation, when the system bandwidth is 50RB, the subcarrier spacing is 15KHz, and 4 SSBs are included in each 1 Slot, it is determined that the maximum number of SSB beam scans is 4, so that the SSB beam scans can be completed in 1ms (including 1 Slot), that is, the transmission of 4 SSB beams is completed. In each SSB, the PSSS occupies one symbol, the PSBCH channel occupies one symbol and partial subcarriers of another symbol, and the SSSS occupies partial subcarriers of one symbol. One implementation of the described distribution pattern is shown in fig. 6, in this embodiment, 4 SSBs can be accommodated in one Slot, which is beneficial for completing the beam scanning in a short time.
A third implementation of step 221 includes: if the maximum number of beams in the beam scanning is a third value, the system bandwidth is a third system bandwidth, and the subcarrier interval is a third subcarrier interval, determining the scanning pattern of the synchronization signal block as: each 1 subframe comprises at least one Slot, each 1 Slot comprises N3 synchronous signal blocks, and each 1 synchronous signal block comprises: PSSS located on one OFDM symbol, SSSS located on a part of subcarriers of one OFDM symbol, and PSBCH located on at least two OFDM symbols, the N3 being greater than or equal to 3.
In specific implementation, when the system bandwidth is 20RB, the subcarrier spacing is 30KHz, and each 1 Slot includes 3 SSBs, it is determined that the maximum number of SSB beam scans is 6, so that the SSB beam scans can be completed in 1ms (including 2 slots), that is, the transmission of 6 SSB beams is completed. In each SSB, PSSS occupies one symbol, PSBCH occupies two symbols and partial subcarriers of the other symbol, and SSSS occupies partial subcarriers of one symbol. One implementation of the described distribution pattern is shown in fig. 7, in which only 20 RBs of bandwidth need be occupied in the frequency domain, so that the minimum supported bandwidth of the scheme is 20 RBs.
In the above embodiments of the present invention, the maximum number of beams in the SSB beam scanning of the through link may be configured according to the "frequency band use condition", "subcarrier interval setting condition" of the through link and/or "number of SSBs included in each Slot", and then the terminal performs SSB beam scanning according to the configured maximum number of beam scanning, and may complete SSB beam scanning in fewer synchronous subframes. The occupation of resources is reduced, more transmission time is reserved for service transmission, and the resource utilization performance of the Sidelink data transmission is improved.
As shown in fig. 8, an embodiment of the present invention further provides a terminal 80, including:
a processor 82, configured to determine, according to a frequency band usage condition of a through link, a subcarrier interval, and/or a number of synchronization signal blocks included in each timeslot, a maximum number of beams in beam scanning of the synchronization signal blocks in the through link of the terminal, where the synchronization signal blocks are a combination block of a synchronization signal of the through link and a broadcast channel of a physical through link;
the transceiver 81 is configured to perform beam scanning of the synchronization signal block according to the maximum number of beams.
The processor 82 is specifically configured to determine, by means of pre-configuration or receiving a notification signaling, the maximum number of beams in beam scanning of a synchronization signal block in a through link of the terminal according to a frequency band usage condition of the through link, a subcarrier interval, and/or the number of synchronization signal blocks included in each timeslot.
Determining the maximum number of beams in beam scanning of a synchronous signal block in a through link of the terminal according to the frequency band use condition of the through link, the subcarrier interval and/or the number of the synchronous signal blocks included in each time slot in a pre-configured manner, wherein the determining comprises the following steps:
after a terminal is started, automatically reading a corresponding relation table of frequency band use conditions, subcarrier intervals and/or the number of synchronous signal blocks included in each time slot, which are pre-stored in the terminal, and the maximum number of beams in the beam scanning of the synchronous signal blocks in a through link of the terminal according to the corresponding relation table; or
After a terminal is started, acquiring a corresponding relation table of frequency band use conditions, subcarrier intervals and/or the number of synchronous signal blocks included in each time slot, which are pre-stored in network equipment, and the maximum number of beams in the beam scanning of the synchronous signal blocks in a through link of the terminal, and determining the maximum number of beams in the beam scanning of the synchronous signal blocks in the through link of the terminal according to the corresponding relation table.
Determining the maximum number of beams in beam scanning of a synchronous signal block in a through link of the terminal according to the frequency band use condition of the through link, the subcarrier interval and/or the number of the synchronous signal blocks included in each time slot by receiving a notification signaling, wherein the method comprises the following steps of:
and receiving a notification signaling from a network device, wherein the notification signaling carries the maximum number of beams in beam scanning of the synchronous signal blocks in the through link of the terminal determined by the network device according to the frequency band use condition of the through link, the subcarrier interval and/or the number of the synchronous signal blocks included in each time slot.
Wherein the notification signaling is: any one of a broadcast message, downlink control information DCI, and radio resource control RRC signaling.
Wherein the transceiver 81 is specifically configured to determine a scanning pattern of the synchronization signal block according to the maximum number of beams in the beam scanning; and performing beam scanning of the synchronous signal block according to the scanning pattern.
Wherein the scan pattern comprises: each 1 subframe comprises at least one Slot, each 1 Slot comprises at least 3 synchronous signal blocks, and each 1 synchronous signal block at least comprises: primary through link synchronization signals (PSSS), secondary through link synchronization signals (SSSS), and physical through link broadcast channel (PSBCH).
Wherein determining the scan pattern of the synchronization signal block according to the maximum number of beams in the beam scanning comprises:
if the maximum number of beams in the beam scanning is a first value, the system bandwidth is a first system bandwidth, and the subcarrier interval is a first subcarrier interval, determining the scanning pattern of the synchronization signal block as:
each 1 subframe comprises at least one Slot, each 1 Slot comprises N1 synchronous signal blocks, and each 1 synchronous signal block comprises: a primary direct link synchronization signal (PSSS) located on one OFDM symbol, a secondary direct link synchronization signal (SSSS) located on one OFDM symbol, a physical direct link broadcast channel (PSBCH) located on one OFDM symbol, and a demodulation pilot reference signal (DMRS) located on one OFDM symbol, the N1 being greater than or equal to 3.
Wherein determining the scan pattern of the synchronization signal block according to the maximum number of beams in the beam scanning comprises:
if the maximum number of beams in the beam scanning is a second value, the system bandwidth is a second system bandwidth, and the subcarrier interval is a second subcarrier interval, determining the scanning pattern of the synchronization signal block as:
each 1 subframe comprises at least one Slot, each 1 Slot comprises N2 synchronous signal blocks, and each 1 synchronous signal block comprises: a primary direct link synchronization signal (PSSS) located on one OFDM symbol, a secondary direct link synchronization signal (SSSS) located on a portion of subcarriers of one OFDM symbol, and a physical direct link broadcast channel (PSBCH) located on at least one OFDM symbol, the N2 being greater than or equal to 3.
Wherein determining the scan pattern of the synchronization signal block according to the maximum number of beams in the beam scanning comprises:
if the maximum number of beams in the beam scanning is a third value, the system bandwidth is a third system bandwidth, and the subcarrier interval is a third subcarrier interval, determining the scanning pattern of the synchronization signal block as:
each 1 subframe comprises at least one Slot, each 1 Slot comprises N3 synchronous signal blocks, and each 1 synchronous signal block comprises: a primary direct link synchronization signal (PSSS) located on one OFDM symbol, a secondary direct link synchronization signal (SSSS) located on a portion of subcarriers of one OFDM symbol, and a physical direct link broadcast channel (PSBCH) located on at least two OFDM symbols, the N3 being greater than or equal to 3.
The embodiment of the terminal is a terminal corresponding to the method shown in fig. 2, and all the implementation manners of the embodiments shown in fig. 2 to fig. 7 are applicable to the embodiment, and the same technical effect can be achieved. The terminal may further include a memory 83, and the processor 82 and the memory 83 may be both communicatively connected to the transceiver 81 through a bus interface, and the functions of the processor 82 may also be implemented by the transceiver 81, and the functions of the transceiver 81 may also be implemented by the processor 82.
An embodiment of the present invention further provides a beam scanning apparatus for synchronizing signal blocks, including:
the processing module is used for determining the maximum number of beams in beam scanning of the synchronous signal blocks in the through link of the terminal according to the frequency band use condition of the through link, the subcarrier interval and/or the number of the synchronous signal blocks included in each time slot, wherein the synchronous signal blocks are combination blocks of synchronous signals of the through link and broadcast channels of a physical through link;
and the transceiver module is used for scanning the beams of the synchronous signal block according to the maximum number of the beams.
It should be noted that the embodiments shown in fig. 2 to 7 are all applicable to this embodiment, and the same technical effects can be achieved.
An embodiment of the present invention further provides a terminal, including: a processor configured to perform the following functions: determining the maximum number of beams in beam scanning of a synchronous signal block in a through link of a terminal according to the frequency band use condition of the through link, the subcarrier interval and/or the number of the synchronous signal blocks included in each time slot, wherein the synchronous signal block is a combined block of a synchronous signal of the through link and a broadcast channel of a physical through link; and performing beam scanning of the synchronous signal block according to the maximum number of the beams. It should be noted that, in this embodiment, all the implementations of the terminal-side method described above are applied, and the same technical effects can be achieved.
The embodiment of the invention also provides a method for configuring the number of wave beams, which is applied to network equipment and comprises the following steps:
configuring the maximum number of beams in beam scanning of the synchronous signal blocks in the through link according to the frequency band use condition of the through link, the subcarrier interval and/or the number of the synchronous signal blocks included in each time slot, so that the terminal performs the beam scanning of the synchronous signal blocks according to the maximum number of the beams; the synchronization signal block is a combination block of a through link synchronization signal and a physical through link broadcast channel.
The configuring the maximum number of beams in beam scanning of the synchronous signal blocks in the through link according to the frequency band use condition of the through link, the subcarrier interval and/or the number of the synchronous signal blocks included in each time slot comprises the following steps:
and sending a notification signaling to a terminal, wherein the notification signaling carries the maximum number of beams in beam scanning of the synchronous signal blocks in the through link, which is determined by the network equipment according to the frequency band use condition of the through link, the subcarrier interval and/or the number of the synchronous signal blocks included in each time slot.
Wherein the notification signaling is: any one of a broadcast message, downlink control information DCI, and radio resource control RRC signaling.
In this embodiment of the present invention, the maximum number of beams in the SSB beam scanning of the through link may be configured according to the "frequency band use condition", "setting condition of subcarrier spacing", and/or "number of SSBs included in each Slot" of the through link, and then the terminal performs the SSB beam scanning according to the configured maximum number of beam scanning, and may complete the SSB beam scanning in fewer synchronous subframes. The occupation of resources is reduced, more transmission time is reserved for service transmission, and the resource utilization performance of the Sidelink data transmission is improved.
As shown in fig. 9, an embodiment of the present invention further provides a network device 90, including:
a processor 92, configured to configure the maximum number of beams in beam scanning of the synchronization signal block in the through link according to the frequency band usage of the through link, the subcarrier interval, and/or the number of synchronization signal blocks included in each time slot, so that the terminal performs beam scanning of the synchronization signal block according to the maximum number of beams; the synchronization signal block is a combination block of a through link synchronization signal and a physical through link broadcast channel. The network device 90 may further include: the transceiver 91, the memory 93, etc., the transceiver 91 and the memory 93, and the transceiver 91 and the processor 92 may be communicatively connected through a bus interface, the function of the processor 92 may also be implemented by the transceiver 91, and the function of the transceiver 91 may also be implemented by the processor 92.
An embodiment of the present invention further provides a device for configuring the number of beams, including:
the processing module is used for configuring the maximum number of beams in beam scanning of the synchronous signal blocks in the through link according to the frequency band use condition of the through link, the subcarrier interval and/or the number of the synchronous signal blocks included in each time slot, so that the terminal performs the beam scanning of the synchronous signal blocks according to the maximum number of the beams; the synchronization signal block is a combination block of a through link synchronization signal and a physical through link broadcast channel.
It should be noted that the network device may be a base station, and all implementation manners of the method on the network device side are applicable to this embodiment, and the same technical effect can be achieved.
An embodiment of the present invention further provides a network device, including: a processor configured to perform the following functions: configuring the maximum number of beams in beam scanning of the synchronous signal blocks in the through link according to the frequency band use condition of the through link, the subcarrier interval and/or the number of the synchronous signal blocks included in each time slot, so that the terminal performs the beam scanning of the synchronous signal blocks according to the maximum number of the beams; the synchronization signal block is a combination block of a through link synchronization signal and a physical through link broadcast channel. It should be noted that, all the implementation manners of the method on the network device side are applicable to this embodiment, and the same technical effect can be achieved.
The embodiment of the invention also provides a beam scanning method, which comprises the following steps:
step 101, obtaining a scanning pattern of a synchronization signal block of a through link; the synchronous signal block is a combination block of a direct link synchronous signal and a physical direct link broadcast channel; in the scanning pattern, each 1 subframe comprises at least one Slot, and each 1 Slot comprises at least 3 synchronous signal blocks;
step 102, performing beam scanning of the synchronization signal block according to the scanning pattern.
Wherein, in the scan pattern: each 1 synchronization signal block includes at least: primary through link synchronization signals (PSSS), secondary through link synchronization signals (SSSS), and physical through link broadcast channel (PSBCH).
As shown in fig. 4 and 5, if the maximum number of beams in the beam scanning is a first value, the system bandwidth is a first system bandwidth, and the subcarrier spacing is a first subcarrier spacing, in the scanning pattern: each 1 sync signal block includes: a primary direct link synchronization signal (PSSS) located on one OFDM symbol, a secondary direct link synchronization signal (SSSS) located on one OFDM symbol, a physical direct link broadcast channel (PSBCH) located on one OFDM symbol, and a demodulation pilot reference signal (DMRS) located on one OFDM symbol.
As shown in fig. 6, if the maximum number of beams in the beam scanning is a second value, the system bandwidth is a second system bandwidth, and the subcarrier spacing is a second subcarrier spacing, in the scanning pattern: each 1 sync signal block includes: a primary through link synchronization signal (PSSS) located on one OFDM symbol, a secondary through link synchronization signal (SSSS) located on a portion of subcarriers of one OFDM symbol, and a physical through link broadcast channel (PSBCH) located on at least one OFDM symbol.
As shown in fig. 7, if the maximum number of beams in the beam scanning is a third value, the system bandwidth is a third system bandwidth, and the subcarrier spacing is a third subcarrier spacing, in the scanning pattern: each 1 sync signal block includes: a primary through link synchronization signal (PSSS) located on one OFDM symbol, a secondary through link synchronization signal (SSSS) located on a portion of subcarriers of one OFDM symbol, and a physical through link broadcast channel (PSBCH) located on at least two OFDM symbols.
It should be noted that the embodiments shown in fig. 2 to 7 are all applicable to this embodiment, and the same technical effects can be achieved.
An embodiment of the present invention further provides a terminal, including:
a processor for obtaining a scan pattern of a synchronization signal block of a through link; the synchronous signal block is a combination block of a direct link synchronous signal and a physical direct link broadcast channel; in the scanning pattern, each 1 subframe comprises at least one Slot, and each 1 Slot comprises at least 3 synchronous signal blocks;
a transceiver for performing beam scanning of the synchronization signal block according to the scanning pattern.
Wherein, in the scan pattern: each 1 synchronization signal block includes at least: primary through link synchronization signals (PSSS), secondary through link synchronization signals (SSSS), and physical through link broadcast channel (PSBCH).
Wherein, if the maximum number of beams in the beam scanning is a first value, the system bandwidth is a first system bandwidth, and the subcarrier spacing is a first subcarrier spacing, in the scanning pattern: each 1 sync signal block includes: a primary direct link synchronization signal (PSSS) located on one OFDM symbol, a secondary direct link synchronization signal (SSSS) located on one OFDM symbol, a physical direct link broadcast channel (PSBCH) located on one OFDM symbol, and a demodulation pilot reference signal (DMRS) located on one OFDM symbol.
Wherein, if the maximum number of beams in the beam scanning is a second value, the system bandwidth is a second system bandwidth, and the subcarrier interval is a second subcarrier interval, in the scanning pattern: each 1 sync signal block includes: a primary through link synchronization signal (PSSS) located on one OFDM symbol, a secondary through link synchronization signal (SSSS) located on a portion of subcarriers of one OFDM symbol, and a physical through link broadcast channel (PSBCH) located on at least one OFDM symbol.
Wherein, if the maximum number of beams in the beam scanning is a third value, the system bandwidth is a third system bandwidth, and the subcarrier interval is a third subcarrier interval, in the scanning pattern: each 1 sync signal block includes: a primary through link synchronization signal (PSSS) located on one OFDM symbol, a secondary through link synchronization signal (SSSS) located on a portion of subcarriers of one OFDM symbol, and a physical through link broadcast channel (PSBCH) located on at least two OFDM symbols.
An embodiment of the present invention further provides a beam scanning apparatus for synchronizing signal blocks, including:
a processing module for obtaining a scanning pattern of a synchronization signal block of a through link; the synchronous signal block is a combination block of a direct link synchronous signal and a physical direct link broadcast channel; in the scanning pattern, each 1 subframe comprises at least one Slot, and each 1 Slot comprises at least 3 synchronous signal blocks;
and the transceiver module is used for carrying out beam scanning on the synchronous signal block according to the scanning pattern.
All the implementation manners of step 101 and step 102 in the above embodiments are applicable to the embodiment of the transmitting apparatus, and the same technical effects can be achieved.
An embodiment of the present invention further provides a terminal, including: a processor configured to perform the following functions: obtaining a scanning pattern of a synchronization signal block of a through link; the synchronous signal block is a combination block of a direct link synchronous signal and a physical direct link broadcast channel; performing beam scanning of the synchronization signal block according to the scanning pattern; in the scanning pattern, each 1 subframe comprises at least one Slot, and each 1 Slot comprises at least 3 synchronous signal blocks. All the implementation manners of step 101 and step 102 in the above embodiments are applicable to the embodiment of the transmitting apparatus, and the same technical effects can be achieved.
Embodiments of the present invention also provide a computer storage medium including instructions that, when executed on a computer, cause the computer to perform the method as described above.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.
Furthermore, it is to be noted that in the device and method of the invention, it is obvious that the individual components or steps can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of performing the series of processes described above may naturally be performed chronologically in the order described, but need not necessarily be performed chronologically, and some steps may be performed in parallel or independently of each other. It will be understood by those skilled in the art that all or any of the steps or elements of the method and apparatus of the present invention may be implemented in any computing device (including processors, storage media, etc.) or network of computing devices, in hardware, firmware, software, or any combination thereof, which can be implemented by those skilled in the art using their basic programming skills after reading the description of the present invention.
Thus, the objects of the invention may also be achieved by running a program or a set of programs on any computing device. The computing device may be a general purpose device as is well known. The object of the invention is thus also achieved solely by providing a program product comprising program code for implementing the method or the apparatus. That is, such a program product also constitutes the present invention, and a storage medium storing such a program product also constitutes the present invention. It is to be understood that the storage medium may be any known storage medium or any storage medium developed in the future. It is further noted that in the apparatus and method of the present invention, it is apparent that each component or step can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of executing the series of processes described above may naturally be executed chronologically in the order described, but need not necessarily be executed chronologically. Some steps may be performed in parallel or independently of each other.
While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.

Claims (26)

1. A method of beam scanning, the method comprising:
determining the maximum number of beams in beam scanning of the synchronous signal blocks in the through link of the terminal according to the frequency band use condition of the through link, the subcarrier interval and/or the number of the synchronous signal blocks included in each time slot; the synchronous signal block is a combination block of a direct link synchronous signal and a physical direct link broadcast channel;
performing beam scanning of the synchronization signal block according to the maximum number of the beams;
performing beam scanning of the synchronization signal block according to the maximum number of beams in the beam scanning, including:
determining a scanning pattern of the synchronization signal block according to the maximum number of beams in the beam scanning;
and performing beam scanning of the synchronous signal block according to the scanning pattern.
2. The method of claim 1, wherein determining the maximum number of beams in the beam scanning of the synchronization signal block in the through link of the terminal according to the frequency band usage of the through link, the subcarrier spacing and/or the number of the synchronization signal blocks included in each timeslot comprises:
and determining the maximum number of beams in beam scanning of the synchronous signal blocks in the through link of the terminal according to the frequency band use condition of the through link, the subcarrier interval and/or the number of the synchronous signal blocks included in each time slot in a mode of pre-configuring or receiving notification signaling.
3. The method according to claim 2, wherein determining the maximum number of beams in the beam scanning of the synchronization signal block in the through link of the terminal according to the frequency band usage of the through link, the subcarrier spacing and/or the number of synchronization signal blocks included in each timeslot in a pre-configured manner includes:
after a terminal is started, automatically reading a corresponding relation table of frequency band use conditions, subcarrier intervals and/or the number of synchronous signal blocks included in each time slot, which are pre-stored in the terminal, and the maximum number of beams in the beam scanning of the synchronous signal blocks in a through link of the terminal according to the corresponding relation table; or
After a terminal is started, acquiring a corresponding relation table of frequency band use conditions, subcarrier intervals and/or the number of synchronous signal blocks included in each time slot, which are pre-stored in network equipment, and the maximum number of beams in the beam scanning of the synchronous signal blocks in a through link of the terminal, and determining the maximum number of beams in the beam scanning of the synchronous signal blocks in the through link of the terminal according to the corresponding relation table.
4. The method of claim 2, wherein determining the maximum number of beams in the beam scanning of the synchronization signal block in the through link of the terminal according to the frequency band usage of the through link, the subcarrier spacing and/or the number of the synchronization signal blocks included in each timeslot by receiving the notification signaling comprises:
and receiving a notification signaling from a network device, wherein the notification signaling carries the maximum number of beams in beam scanning of the synchronous signal blocks in the through link of the terminal determined by the network device according to the frequency band use condition of the through link, the subcarrier interval and/or the number of the synchronous signal blocks included in each time slot.
5. The beam scanning method of claim 4, wherein the notification signaling is: any one of a broadcast message, downlink control information DCI, and radio resource control RRC signaling.
6. The beam scanning method of claim 1, wherein the scan pattern comprises:
each 1 subframe comprises at least one Slot, each 1 Slot comprises at least 3 synchronous signal blocks, and each 1 synchronous signal block at least comprises: primary through link synchronization signal PSSS, secondary through link synchronization signal SSSS, and physical through link broadcast channel PSBCH.
7. The method of claim 6, wherein determining the scan pattern of the synchronization signal block according to the maximum number of beams in the beam scan comprises:
if the maximum number of beams in the beam scanning is a first value, the system bandwidth is a first system bandwidth, and the subcarrier interval is a first subcarrier interval, determining the scanning pattern of the synchronization signal block as:
each 1 subframe comprises at least one Slot, each 1 Slot comprises N1 synchronous signal blocks, and each 1 synchronous signal block comprises: a primary direct link synchronization signal PSSS located on one OFDM symbol, a secondary direct link synchronization signal SSSS located on one OFDM symbol, a physical direct link broadcast channel PSBCH located on one OFDM symbol, and a demodulation pilot reference signal DMRS located on one OFDM symbol, said N1 being greater than or equal to 3.
8. The method of claim 6, wherein determining the scan pattern of the synchronization signal block according to the maximum number of beams in the beam scan comprises:
if the maximum number of beams in the beam scanning is a second value, the system bandwidth is a second system bandwidth, and the subcarrier interval is a second subcarrier interval, determining the scanning pattern of the synchronization signal block as:
each 1 subframe comprises at least one Slot, each 1 Slot comprises N2 synchronous signal blocks, and each 1 synchronous signal block comprises: a primary direct link synchronization signal PSSS located on one OFDM symbol, a secondary direct link synchronization signal SSSS located on a part of subcarriers of one OFDM symbol, and a physical direct link broadcast channel PSBCH located on at least one OFDM symbol, said N2 being greater than or equal to 3.
9. The method of claim 6, wherein determining the scan pattern of the synchronization signal block according to the maximum number of beams in the beam scan comprises:
if the maximum number of beams in the beam scanning is a third value, the system bandwidth is a third system bandwidth, and the subcarrier interval is a third subcarrier interval, determining the scanning pattern of the synchronization signal block as:
each 1 subframe comprises at least one Slot, each 1 Slot comprises N3 synchronous signal blocks, and each 1 synchronous signal block comprises: a primary direct link synchronization signal PSSS located on one OFDM symbol, a secondary direct link synchronization signal SSSS located on a part of subcarriers of one OFDM symbol, and a physical direct link broadcast channel PSBCH located on at least two OFDM symbols, said N3 being greater than or equal to 3.
10. A method for configuring the number of beams is applied to a network device, and is characterized in that the method comprises the following steps:
configuring the maximum number of beams in beam scanning of the synchronous signal blocks in the through link according to the frequency band use condition of the through link, the subcarrier interval and/or the number of the synchronous signal blocks included in each time slot, so that the terminal performs the beam scanning of the synchronous signal blocks according to the maximum number of the beams; the synchronous signal block is a combination block of a direct link synchronous signal and a physical direct link broadcast channel; and the terminal determines the scanning pattern of the synchronous signal block according to the maximum number of the beams in the beam scanning, and performs the beam scanning of the synchronous signal block according to the scanning pattern.
11. The method according to claim 10, wherein configuring the maximum number of beams in the beam scanning of the synchronization signal block in the through link according to the frequency band usage of the through link, the subcarrier spacing and/or the number of synchronization signal blocks included in each timeslot comprises:
and sending a notification signaling to a terminal, wherein the notification signaling carries the maximum number of beams in beam scanning of the synchronous signal blocks in the through link, which is determined by the network equipment according to the frequency band use condition of the through link, the subcarrier interval and/or the number of the synchronous signal blocks included in each time slot.
12. The method according to claim 11, wherein the notification signaling is: any one of a broadcast message, downlink control information DCI, and radio resource control RRC signaling.
13. A terminal, comprising:
the processor is used for determining the maximum number of beams in beam scanning of the synchronous signal blocks in the through link of the terminal according to the frequency band use condition of the through link, the subcarrier interval and/or the number of the synchronous signal blocks included in each time slot, wherein the synchronous signal blocks are combination blocks of synchronous signals of the through link and broadcast channels of a physical through link;
a transceiver for performing beam scanning of the synchronization signal block according to the maximum number of the beams;
performing beam scanning of the synchronization signal block according to the maximum number of beams in the beam scanning, including:
determining a scanning pattern of the synchronization signal block according to the maximum number of beams in the beam scanning;
and performing beam scanning of the synchronous signal block according to the scanning pattern.
14. A beam scanning apparatus for synchronizing signal blocks, comprising:
the processing module is used for determining the maximum number of beams in beam scanning of the synchronous signal blocks in the through link of the terminal according to the frequency band use condition of the through link, the subcarrier interval and/or the number of the synchronous signal blocks included in each time slot, wherein the synchronous signal blocks are combination blocks of synchronous signals of the through link and broadcast channels of a physical through link;
a transceiver module, configured to perform beam scanning of the synchronization signal block according to the maximum number of beams;
performing beam scanning of the synchronization signal block according to the maximum number of beams in the beam scanning, including:
determining a scanning pattern of the synchronization signal block according to the maximum number of beams in the beam scanning;
and performing beam scanning of the synchronous signal block according to the scanning pattern.
15. A terminal, comprising: a processor configured to perform the following functions: determining the maximum number of beams in beam scanning of a synchronous signal block in a through link of a terminal according to the frequency band use condition of the through link, the subcarrier interval and/or the number of the synchronous signal blocks included in each time slot, wherein the synchronous signal block is a combined block of a synchronous signal of the through link and a broadcast channel of a physical through link; performing beam scanning of the synchronization signal block according to the maximum number of the beams;
performing beam scanning of the synchronization signal block according to the maximum number of beams in the beam scanning, including:
determining a scanning pattern of the synchronization signal block according to the maximum number of beams in the beam scanning;
and performing beam scanning of the synchronous signal block according to the scanning pattern.
16. An apparatus for configuring the number of beams, comprising:
the processing module is used for configuring the maximum number of beams in beam scanning of the synchronous signal blocks in the through link according to the frequency band use condition of the through link, the subcarrier interval and/or the number of the synchronous signal blocks included in each time slot, so that the terminal performs the beam scanning of the synchronous signal blocks according to the maximum number of the beams; the synchronous signal block is a combination block of a direct link synchronous signal and a physical direct link broadcast channel; and the terminal determines the scanning pattern of the synchronous signal block according to the maximum number of the beams in the beam scanning, and performs the beam scanning of the synchronous signal block according to the scanning pattern.
17. A network device, comprising: a processor configured to perform the following functions: configuring the maximum number of beams in beam scanning of the synchronous signal blocks in the through link according to the frequency band use condition of the through link, the subcarrier interval and/or the number of the synchronous signal blocks included in each time slot, so that the terminal performs the beam scanning of the synchronous signal blocks according to the maximum number of the beams; the synchronous signal block is a combination block of a direct link synchronous signal and a physical direct link broadcast channel; and the terminal determines the scanning pattern of the synchronous signal block according to the maximum number of the beams in the beam scanning, and performs the beam scanning of the synchronous signal block according to the scanning pattern.
18. A method of beam scanning, comprising:
obtaining a scanning pattern of a synchronization signal block of a through link; the synchronous signal block is a combination block of a direct link synchronous signal and a physical direct link broadcast channel; in the scanning pattern, each 1 subframe comprises at least one Slot, and each 1 Slot comprises at least 3 synchronous signal blocks, wherein the scanning pattern of the synchronous signal blocks is determined according to the maximum number of beams in beam scanning of the synchronous signal blocks as claimed in claim 1;
and performing beam scanning of the synchronous signal block according to the scanning pattern.
19. The beam scanning method of claim 18, wherein in the scan pattern: each 1 synchronization signal block includes at least: primary through link synchronization signal PSSS, secondary through link synchronization signal SSSS, and physical through link broadcast channel PSBCH.
20. The beam scanning method of claim 19,
if the maximum number of beams in the beam scanning is a first value, the system bandwidth is a first system bandwidth, and the subcarrier spacing is a first subcarrier spacing, in the scanning pattern: each 1 sync signal block includes: a primary through-link synchronization signal PSSS located on one OFDM symbol, a secondary through-link synchronization signal SSSS located on one OFDM symbol, a physical through-link broadcast channel PSBCH located on one OFDM symbol, and a demodulation pilot reference signal DMRS located on one OFDM symbol.
21. The beam scanning method of claim 19,
if the maximum number of beams in the beam scanning is a second value, the system bandwidth is a second system bandwidth, and the subcarrier interval is a second subcarrier interval, in the scanning pattern: each 1 sync signal block includes: a primary through-link synchronization signal PSSS located on one OFDM symbol, a secondary through-link synchronization signal SSSS located on a portion of subcarriers of one OFDM symbol, and a physical through-link broadcast channel PSBCH located on at least one OFDM symbol.
22. The beam scanning method of claim 19,
if the maximum number of beams in the beam scanning is a third value, the system bandwidth is a third system bandwidth, and the subcarrier spacing is a third subcarrier spacing, in the scanning pattern: each 1 sync signal block includes: a primary through-link synchronization signal PSSS located on one OFDM symbol, a secondary through-link synchronization signal SSSS located on a portion of subcarriers of one OFDM symbol, and a physical through-link broadcast channel PSBCH located on at least two OFDM symbols.
23. A terminal, comprising:
a processor for obtaining a scan pattern of a synchronization signal block of a through link; the synchronous signal block is a combination block of a direct link synchronous signal and a physical direct link broadcast channel; in the scanning pattern, each 1 subframe comprises at least one Slot, and each 1 Slot comprises at least 3 synchronous signal blocks, wherein the scanning pattern of the synchronous signal blocks is determined according to the maximum number of beams in beam scanning of the synchronous signal blocks as claimed in claim 1;
a transceiver for performing beam scanning of the synchronization signal block according to the scanning pattern.
24. A beam scanning apparatus for synchronizing signal blocks, comprising:
a processing module for obtaining a scanning pattern of a synchronization signal block of a through link; the synchronous signal block is a combination block of a direct link synchronous signal and a physical direct link broadcast channel; in the scanning pattern, each 1 subframe comprises at least one Slot, and each 1 Slot comprises at least 3 synchronous signal blocks, wherein the scanning pattern of the synchronous signal blocks is determined according to the maximum number of beams in beam scanning of the synchronous signal blocks as claimed in claim 1;
and the transceiver module is used for carrying out beam scanning on the synchronous signal block according to the scanning pattern.
25. A terminal, comprising: a processor configured to perform the following functions: obtaining a scanning pattern of a synchronization signal block of a through link; the synchronous signal block is a combination block of a direct link synchronous signal and a physical direct link broadcast channel; performing beam scanning of the synchronization signal block according to the scanning pattern; in the scanning pattern, at least one Slot is included in every 1 subframe, and at least 3 synchronization signal blocks are included in every 1 Slot, wherein the scanning pattern of the synchronization signal blocks is determined according to the maximum number of beams in the beam scanning of the synchronization signal blocks as claimed in claim 1.
26. A computer storage medium comprising instructions which, when executed on a computer, cause the computer to perform the method of any of claims 1 to 9 or the method of any of claims 10 to 12 or the method of any of claims 18 to 22.
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