WO2021159941A1 - 一种通信的方法及装置 - Google Patents

一种通信的方法及装置 Download PDF

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Publication number
WO2021159941A1
WO2021159941A1 PCT/CN2021/073133 CN2021073133W WO2021159941A1 WO 2021159941 A1 WO2021159941 A1 WO 2021159941A1 CN 2021073133 W CN2021073133 W CN 2021073133W WO 2021159941 A1 WO2021159941 A1 WO 2021159941A1
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WIPO (PCT)
Prior art keywords
different
frequency point
frequency
ssb
time unit
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Application number
PCT/CN2021/073133
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English (en)
French (fr)
Inventor
汪宇
周建伟
罗禾佳
乔云飞
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP21752993.2A priority Critical patent/EP4092929A4/en
Publication of WO2021159941A1 publication Critical patent/WO2021159941A1/zh
Priority to US17/882,060 priority patent/US20220377687A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1851—Systems using a satellite or space-based relay
    • H04B7/18513—Transmission in a satellite or space-based system
    • 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
    • H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
    • H04B7/0842—Weighted combining
    • H04B7/0848—Joint weighting
    • H04B7/0857—Joint weighting using maximum ratio combining techniques, e.g. signal-to- interference ratio [SIR], received signal strenght indication [RSS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0868—Hybrid systems, i.e. switching and combining
    • 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
    • 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
    • H04L5/005—Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
    • 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
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0092—Indication of how the channel is divided
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/003—Arrangements to increase tolerance to errors in transmission or reception timing
    • 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
    • H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H04W56/0015—Synchronization between nodes one node acting as a reference for the others
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/06—Airborne or Satellite Networks

Definitions

  • the embodiments of the present application relate to the field of wireless communication technologies, and in particular, to a communication method and device.
  • the terminal device After the terminal device is turned on, it can receive the synchronization signal block (SSB) sent by the network device, and access the network device according to the SSB.
  • SSB synchronization signal block
  • the frequency points of multiple cells are configured in the network equipment.
  • the frequency point for accessing the cell is fc.
  • the frequency point fc here actually refers to the frequency band SSB bandwidth with fc as the center frequency point.
  • the frequency band is referred to as frequency point fc for short.
  • SSB bandwidth is a part of the bandwidth of the cell bandwidth.
  • the network equipment uses the frequency point fc to send different SSBs in different time units. For example, SSB0 sent on time unit T1, SSB1 sent on time unit T2, and SSB2 sent on time unit T3.
  • the terminal equipment is configured with frequency points for accessing multiple cells, and the terminal equipment uses multiple different frequency points to blindly detect the SSB.
  • the terminal equipment can access according to the information in the received SSB The corresponding cell.
  • the network device is configured with n different SSBs, for example, SSB0 to SSBn-1 respectively, they can be divided into n time units (for example, T1 to Tn respectively) and sent separately.
  • the network device can cyclically send these n SSBs.
  • the terminal device traverses a cycle, and accesses the network device according to the information of one or more SSBs received in a cycle.
  • the terminal device When there are many SSBs configured in the network, using the same frequency and time-sharing scanning method as shown in Figure 1 to send SSBs, the terminal device will take a long time to traverse a cycle, so the time for the terminal device to connect to the network will also increase. .
  • the embodiments of the present application provide a communication method and device to solve the current problem of long time for terminal equipment to access the network.
  • a communication method is provided, and a terminal device can determine a first frequency point for accessing a network device. Then, the terminal device may determine at least one second frequency point according to the first frequency point, any one of the second frequency points is different from the first frequency point, and if the second frequency point is at least two One, the at least two second frequency points are also different. Further, the terminal device may select at least two different second frequency points from the first frequency point and the at least one second frequency point, and the terminal device may select at least two different second frequency points within a period of time. , Using the at least two different frequency points to respectively receive the synchronization signal block SSB from the network device.
  • the at least two different frequency points used for receiving the SSB belong to a frequency point set composed of the first frequency point and the at least one second frequency point.
  • the terminal device accesses the network device according to the received one or more different SSBs.
  • one of the cycles includes at least two of the time units, the SSBs received in different time units in one of the cycles are different, and all the SSBs received at different frequency points in one time unit are different.
  • the SSBs are different, and the beams corresponding to the different SSBs received within one time unit are different.
  • the terminal device first determines the first frequency point for accessing the network device, and then determines at least one second frequency point according to the first frequency point.
  • the terminal device selects at least two different frequencies between the first frequency point and the second frequency point.
  • the points receive the SSB respectively, that is, the terminal device can receive at least two SSBs in one time unit.
  • the network device transmits at least two SSBs in one time unit. If multiple SSBs are configured on the network device side, compared to sending one SSB within one time unit, the configured SSB can be sent as soon as possible, and the terminal device can also take less time to receive the SSB configured by the network device. Therefore, the terminal device can reduce the time to access the network device.
  • the network device may be a ground network device or a non-ground network device, such as a satellite.
  • the terminal device may also determine whether beams corresponding to different SSBs received by using the same frequency point in adjacent time units are the same. That is, the terminal equipment uses the same frequency point, and whether the beams corresponding to the two SSBs received before and after are the same.
  • Satellite network services are uneven. When there are more end users in an area, the dwell time of the beam covering the area is longer, and when there are fewer end users in an area, the dwell time of the beam covering the area is shorter.
  • the network device sends the SSB if the dwell time of the beam currently sending the SSB is relatively long, it may be postponed to the next time unit for sending the SSB, and the network device sends different SSBs in adjacent time units. The corresponding beams are the same. If the current residence time of the beam for sending the SSB is relatively short, it will not be postponed to the next time unit for sending the SSB, and the beams corresponding to different SSBs sent by the network device in adjacent time units are different.
  • the terminal device may also determine whether the beams corresponding to the different SSBs received at the same frequency point in the adjacent time unit are the same. In the same situation, SSBs with the same beam can be soft combined to improve demodulation performance, and resource combination can be performed to improve resource utilization.
  • the terminal device determines whether the beams corresponding to different SSBs received at the same frequency point in adjacent time units are the same, it may be that the terminal device receives The SSB includes a first indication, and the first indication is used to instruct the network device to use the beam corresponding to the SSB transmitted by the third frequency point in the first time unit, which is different from using the beam corresponding to the SSB in the second time unit. Whether the beams corresponding to the SSB sent at the third frequency point are the same.
  • the second time unit is adjacent to the first time unit
  • the third frequency point is any one of the at least two different frequency points.
  • the terminal device may determine, according to the first instruction, that the SSB received using the third frequency point in the first time unit corresponds to the SSB received using the third frequency point in the second time unit Whether the beams are the same.
  • the first time unit may be earlier than the second time unit, or may be later than the second time unit.
  • a first indication is added to the SSB to indicate whether the two SSBs of the same frequency point, the same spatial domain, and adjacent time units correspond to the same beam.
  • the terminal device may determine, according to the first indication in the SSB, whether the beams corresponding to the different SSBs received in the adjacent time unit using the same frequency point are the same.
  • the first indication may occupy 1 bit or more bits.
  • the terminal device may determine a second frequency point according to the first frequency point, and the first frequency point supports polarization multiplexing. This method can be applied to polarization multiplexing scenarios.
  • the terminal device determines at least one or at most three second frequency points according to the first frequency point, and the first frequency point does not support polarization multiplexing. This method can be applied to non-polarized multiplexing scenarios.
  • the number of frequency points used to receive the SSB is related to N in the N-color multiplexing of the terminal equipment, where N is the frequency reuse factor.
  • the terminal device will use the first frequency point and all the second frequency points to receive SSB, and the number of the second frequency points is related to N.
  • the terminal device may use the at least two different frequency points within one time unit to receive one SSB from the network device, that is, one frequency point receives one SSB. SSB.
  • the terminal device may use the at least two different frequency points within one time unit to receive two different SSBs from the network device respectively, that is, one frequency point receives two SSBs .
  • the beams corresponding to the two different SSBs received by using one frequency point are distinguished by the spatial domain.
  • different SSBs contain different numbers.
  • the SSB includes a second indication, and the second indication may be used to indicate the spatial domain information and time unit information of the SSB sent by the network device.
  • the second indication may also be used to indicate the frequency point information of the SSB sent by the network device.
  • the frequency intervals of adjacent frequency points among the at least two different frequency points are the same.
  • a network device can use at least two different frequency points to respectively transmit the synchronization signal block SSB in a time unit within a cycle.
  • one said period includes at least two said time units, said SSBs respectively sent in different time units within one said period are different, and said SSBs sent using different frequency points in one said time unit Different, the beams corresponding to different SSBs sent within one time unit are different.
  • the network device transmits at least two SSBs in one time unit. If multiple SSBs are configured on the network device side, compared to sending one SSB within one time unit, the configured SSB can be sent as soon as possible, and the terminal device can also take less time to receive the SSB configured by the network device. Therefore, the terminal device can reduce the time to access the network device.
  • the network device may be a ground network device or a non-ground network device, such as a satellite.
  • the network device may determine at least one second frequency point according to the first frequency point, and any one of the second frequency points is different from the first frequency point; if the second frequency point is When there are at least two points, the at least two second frequency points are also different; the at least two different frequency points used for sending SSB belong to the composition of the first frequency point and the at least one second frequency point A collection of frequency points.
  • the network device may select at least two different second frequency points from the first frequency point and the at least one second frequency point as the frequency points for sending the SSB.
  • the first frequency point and all the second frequency points are used as the frequency points for sending the SSB.
  • the beams corresponding to different SSBs that are transmitted using the same frequency point in adjacent time units are the same or different.
  • Satellite network services are uneven. When there are more end users in an area, the dwell time of the beam covering the area is longer, and when there are fewer end users in an area, the dwell time of the beam covering the area is shorter.
  • the network device sends the SSB, if the dwell time of the beam currently sending the SSB is relatively long, it may be postponed to the next time unit for sending the SSB, and the network device sends different SSBs in adjacent time units. The corresponding beams are the same. If the current residence time of the beam for sending the SSB is relatively short, it will not be postponed to the next time unit for sending the SSB, and the beams corresponding to different SSBs sent by the network device in adjacent time units are different. In the case that the beams corresponding to different SSBs are the same, the terminal device can soft-combine the SSBs with the same beam to improve demodulation performance, and combine resources to improve resource utilization.
  • the SSB includes a first indication
  • the first indication is used to instruct the network device to use the third frequency point to send the beam corresponding to the SSB within the first time unit, which is different from the Whether the beams corresponding to the SSB sent by using the third frequency point in the second time unit are the same, where the second time unit is adjacent to the first time unit, and the third frequency point is the at least two Any one of two different frequency points.
  • the first time unit is earlier than the second time unit, or the first time unit is later than the second time unit.
  • a first indication is added to the SSB to indicate whether the two SSBs of the same frequency point, the same spatial domain, and adjacent time units correspond to the same beam.
  • the terminal device can determine, according to the first indication in the SSB, whether the beams corresponding to the different SSBs received in the adjacent time unit using the same frequency point are the same.
  • the first indication may occupy 1 bit or more bits.
  • the network device may determine a second frequency point according to the first frequency point, and the first frequency point supports polarization multiplexing. This method can be applied to polarization multiplexing scenarios.
  • the network device determines at least one or at most three second frequency points according to the first frequency point, and the first frequency point does not support polarization multiplexing. This method can be applied to non-polarized multiplexing scenarios.
  • the number of frequency points used to send the SSB is related to N in the N-color multiplexing of the network equipment, where N is the frequency reuse factor.
  • the network device will use the first frequency point and all the second frequency points to send SSB, and the number of the second frequency points is related to N.
  • the network device may use the at least two different frequency points within one time unit to send one SSB respectively; that is, one frequency point sends one SSB.
  • the network device may use the at least two different frequency points within one time unit to send two different SSBs respectively, that is, one frequency point sends two SSBs.
  • the beams corresponding to the two different SSBs transmitted by using one frequency point are distinguished by the spatial domain.
  • different SSBs contain different numbers.
  • the SSB includes a second indication, and the second indication may be used to indicate the spatial domain information and time unit information of the SSB sent by the network device.
  • the second indication may also be used to indicate the frequency point information of the SSB sent by the network device.
  • the frequency intervals of adjacent frequency points among the at least two different frequency points are the same.
  • a communication device in a third aspect, has the function of realizing the terminal device in the foregoing method embodiment.
  • These functions can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more functional modules corresponding to the above-mentioned functions.
  • a communication device in a fourth aspect, has the function of realizing the network device in the foregoing method embodiment.
  • These functions can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more functional modules corresponding to the above-mentioned functions.
  • a communication device may be the terminal device in the foregoing method embodiment, or a chip set in the terminal device.
  • the communication device includes a transceiver and a processor, and optionally, a memory, where the memory is used to store a computer program or instruction, and the processor is respectively coupled with the memory and the transceiver.
  • the processor executes the computer program or instruction
  • the communication device is caused to execute the method executed by the terminal device in the foregoing method embodiment.
  • a communication device may be the network device in the foregoing method embodiment, or a chip set in the network device.
  • the communication device includes a transceiver and a processor, and optionally, a memory.
  • the memory is used to store a computer program or instruction.
  • the processor is coupled with the memory and the transceiver respectively. When the processor executes the computer program or instruction At this time, the communication device is caused to execute the method executed by the network device in the foregoing method embodiment.
  • a computer program product comprising: computer program code, when the computer program code runs on a computer, the computer executes the first aspect and any one of the possible aspects of the first aspect. Implementation of the method executed by the terminal device.
  • a computer program product comprising: computer program code, when the computer program code is run on a computer, the computer executes any of the above-mentioned second aspect and any possible aspect of the second aspect The method executed by the network device in the implementation.
  • a chip system is provided, which is used to implement the functions of the terminal device in the foregoing first aspect and any possible implementation method of the first aspect.
  • the chip system may include a transceiver, and the transceiver, for example, receives or transmits data and/or information involved in the foregoing method.
  • the chip system may further include a memory, and the memory is used to store program instructions and/or data.
  • the chip system can be composed of chips, and can also include chips and other discrete devices.
  • the chip system may further include a communication interface, the communication interface may be used for data exchange of other devices, and the communication interface may be, for example, a pin on a chip.
  • a chip system is provided, which is used to implement the function of the network device in the second aspect and any possible implementation method of the second aspect.
  • the chip system may include a transceiver, and the transceiver, for example, receives or transmits data and/or information involved in the foregoing method.
  • the chip system may further include a memory, and the memory is used to store program instructions and/or data.
  • the chip system can be composed of chips, and can also include chips and other discrete devices.
  • the chip system may further include a communication interface, the communication interface may be used for data exchange of other devices, and the communication interface may be, for example, a pin on a chip.
  • a computer-readable storage medium stores a computer program.
  • the computer program When the computer program is executed, the first aspect and any possible implementation of the first aspect are implemented by The method executed by the terminal device.
  • a computer-readable storage medium stores a computer program.
  • the computer program When the computer program is executed, the second aspect and any possible implementation of the second aspect are implemented by The method performed by the network device.
  • a communication system may include a terminal device that executes the method described in any possible implementation of the first aspect and the first aspect, and a terminal device that executes the second aspect and the second aspect. Any possible implementation of the method described in the network device.
  • FIG. 1 is a schematic diagram of transmitting SSB at the same frequency and time sharing provided in the prior art
  • Figure 2 is a schematic diagram of a satellite communication system provided in an embodiment of the application.
  • FIG. 3 is a schematic diagram of a beam-hopping communication process provided in an embodiment of this application.
  • FIG. 4A is a schematic structural diagram of a synchronization signal block SSB provided in an embodiment of this application;
  • FIG. 4B is a schematic diagram of a process of periodically sending an SSB provided in an embodiment of this application.
  • FIG. 5 is a schematic diagram of inter-frequency transmission of SSB provided in an embodiment of this application.
  • FIG. 6 is a schematic diagram of a communication process in which a terminal device receives an SSB according to an embodiment of the application
  • FIG. 7A, FIG. 7B, and FIG. 7C are schematic diagrams of transmitting SSB between different frequencies provided in an embodiment of this application;
  • FIG. 8, FIG. 9, FIG. 10, and FIG. 11 are schematic diagrams of a communication device provided in an embodiment of this application.
  • the technical solutions of the embodiments of the present application can be applied to various communication systems, for example: terrestrial communication systems, non-terrestrial communication systems, such as satellite communication systems.
  • the satellite communication system can be integrated with a traditional mobile communication system.
  • the mobile communication system may be a fourth-generation (4th Generation, 4G) communication system (for example, a long-term evolution (LTE) system), and worldwide interoperability for microwave access (WiMAX) communication System, the fifth generation (5th Generation, 5G) communication system (for example, the new radio (NR) system), and the future mobile communication system, etc.
  • 4G fourth-generation
  • LTE long-term evolution
  • WiMAX worldwide interoperability for microwave access
  • 5G fifth generation
  • NR new radio
  • FIG. 2 is a schematic diagram of a possible satellite communication system architecture applicable to this application. If you compare a satellite communication system with a terrestrial communications system, you can think of a satellite as one or more network devices on the ground, such as a base station. From access point 1, access point 2, or even access point 3 to access point n (not shown in the figure), satellites provide communication services to terminal devices, and satellites can also be connected to core network devices (such as AMF).
  • the satellite may be a non-geostationary earth (NGEO) satellite or a geostationary earth (GEO) satellite.
  • NGEO non-geostationary earth
  • GEO geostationary earth
  • This application is also applicable to terrestrial communication systems, so the satellite in Figure 2 can be replaced with terrestrial network equipment.
  • the coverage of a satellite can reach thousands or even tens of thousands of kilometers, and the coverage of a beam can reach tens of meters or even thousands of meters.
  • a satellite In order to support the wide area coverage of the satellite, a satellite usually needs to be configured with dozens, hundreds, or even more beams.
  • a beam-hopping method can be used for regional coverage. That is, a satellite can be configured with more beams to cover a wider area, but only a smaller number of beams are used for regional coverage in the same time unit, and a wider area can be covered by multiple beams used in different time units.
  • the satellite is configured with 16 beams to cover a wide area, but only 4 beams are used for regional coverage in a time unit.
  • the time unit T1 four beams numbered 0, 1, 4, and 5 are used for regional coverage; in the time unit T2, four beams numbered 2, 3, 6, and 7 are used for regional coverage.
  • all areas covered by a single satellite that is, the areas corresponding to 16 beams) are served through the T1, T2, T3, and T4 time-sharing manner.
  • the satellite is configured with 32 beams to cover a wide area, and only 8 beams are used for regional coverage in a time unit. In the time unit T1, 8 beams numbered from 0 to 7 are used for area coverage, and in the time unit T2, 8 beams numbered from 8 to 15 are used for area coverage.
  • a time unit can be tens of milliseconds, a few milliseconds, or even smaller time granularity.
  • Multiple beams that perform area coverage in a time unit can be called beam clusters, which can consist of 4 or 8 beams.
  • 8 beams numbered from 0 to 7 in Fig. 7A are a beam cluster
  • Fig. 7B The 8 beams numbered 8-15 are a beam cluster.
  • each beam can be regarded as a beam in a cell or a separate cell. Since the signal strength between the center position and the edge position of the satellite beam is not much different, if the full frequency multiplexing method is used for communication, strong interference will occur between adjacent beams. Therefore, in satellite communication systems, multi-color multiplexing (including frequency multiplexing and polarization multiplexing) is usually used to reduce interference between satellite beams. As shown in Figure 1, in the time unit T1, the frequency bands corresponding to the four beams 0, 1, 4, and 5 are different. For example, the system bandwidth can be equally divided into four frequency bands, and the center frequency of each frequency band is f1.
  • the beams 0, 1, 4, and 5 respectively correspond to the frequency bands with the center frequency points of f1, f2, f3, and f4.
  • the adjacent beams in the satellite use different frequencies to communicate with the terminal equipment, so as to achieve the effect of suppressing interference.
  • a network device uses a frequency point to send an SSB within a time unit. It takes a long time for the network device to send the configured SSB, and the time it takes for the terminal device to receive the SSB will also be longer, so that the terminal device will receive the SSB. The delay of entering the network device is long.
  • this application proposes a manner in which a network device uses at least two different frequency points to send SSBs separately in one time unit, and then the network device can send at least two SSBs in one time unit.
  • the terminal device can use at least two different frequency points to receive the SSB respectively within a time unit.
  • the time for the network device to send the configured SSSB is shortened, and the time for the terminal device to access the network device is also shortened.
  • Terminal equipment also known as user equipment (UE), mobile station (MS), mobile terminal (MT), terminal, etc.
  • terminal devices include handheld devices with wireless connection functions, vehicle-mounted devices, and Internet of Things devices.
  • terminal devices can be: mobile phones (mobile phones), tablets, notebook computers, handheld computers, mobile Internet devices (MID), wearable devices, virtual reality (VR) devices, augmented reality (augmented reality (AR) equipment, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, and smart grids Wireless terminals, wireless terminals in transportation safety, wireless terminals in smart cities, or wireless terminals in smart homes, etc.
  • the network equipment may be a non-terrestrial network equipment, such as a satellite. It can also be a network device on the ground, such as a base station, an evolved NodeB (eNB or eNodeB) in the LTE system, or a cloud radio access network (CRAN) scenario
  • eNB evolved NodeB
  • CRAN cloud radio access network
  • the wireless controller, or the network device may be a relay station, an access point, an in-vehicle device, a next generation Node B (gNodeB) in a 5G network, etc., which are not limited in the embodiment of the present application.
  • Core network equipment including but not limited to access and mobility management function network elements (access and mobility management function, AMF).
  • AMF has the core network control plane function and provides user mobility management and access management functions.
  • Satellite beam refers to the shape formed on the surface of the earth by electromagnetic waves emitted by a satellite antenna, just like the beam of a flashlight has a certain range. Or the signal emitted by the satellite is not a 360° radiation, but a signal wave emitted concentratedly in a certain azimuth.
  • the synchronization signal block SSB (SS/PBCH block) is composed of a primary synchronization signal (PSS), a secondary synchronization signal (SSS) and a PBCH, as shown in Figure 4A.
  • the SSB is sent in a periodic form.
  • the SSB of multiple beam directions in the same period can be limited to 5ms.
  • the period of the SSB can be 20ms, and the SSB of multiple beam directions is limited to 5ms.
  • the SSB of each beam direction may be called SS burst Set in FIG. 4B.
  • a 15kHz subcarrier spacing SCS is used, so the number of symbols within 1ms is 14.
  • Each SS-block occupies 4 consecutive symbols, including two SSBs within 1ms, and there is a certain symbol interval between adjacent SSBs.
  • Beam scanning A certain time unit concentrates energy in a certain direction, this direction can send the signal farther, but the signal can not be received in other directions, the next time unit is sent in another direction, and finally passes through the beam Continuously change direction to achieve coverage of multiple areas.
  • the "and/or” in this application describes the association relationship of the associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone. This situation.
  • the character "/” generally indicates that the associated objects before and after are in an "or” relationship.
  • the multiple involved in this application refers to two or more.
  • the word "exemplary” is used to mean serving as an example, illustration, or illustration. Any embodiments or implementations described as “examples” in this application should not be construed as being more preferred or advantageous than other embodiments or implementations. Rather, the term example is used to present the concept in a concrete way.
  • first frequency point and the second frequency point in this application may be one frequency point, or may refer to a frequency band with the first frequency point or the second frequency point as the center frequency point.
  • the network device may use at least two different frequency points to respectively transmit the SSB in a time unit within a cycle.
  • one of the periods includes at least two of the time units, the SSBs respectively sent in different time units in one of the periods are different, and the SSBs sent by using different frequency points in one of the time units are different,
  • the beams corresponding to different SSBs sent within one time unit are different.
  • the period can be within 5ms, 20ms, or 160ms.
  • the different beams can be understood as different beam directions.
  • the different SSBs can be understood as different numbers included in the SSs.
  • the network device repeats the above process in each time unit, and repeats the process of the previous week in each cycle.
  • the network equipment is configured with 12 SSBs, SSB0 to SSB11.
  • the network device uses fc, f0+fc, 2f0+fc, 3f0+fc, these 4 frequency points to send SSB respectively in a time unit.
  • a cycle includes 3 time units, namely T1, T2, and T3.
  • the network device can send the configured 12 SSBs in these three time units.
  • the at least two different frequency points used by the network device to send the SSB may be pre-configured by the network device for a single cell or an area.
  • the pre-configured frequency intervals of two adjacent frequency points may be the same or different.
  • the network device can also be configured with a frequency point of a cell or an area as shown in Table 1, for example, defined as the first frequency point, and configured with the maximum number M of inter-frequency frequency points for sending SSB in the cell, and Configure the frequency interval between two adjacent frequency points.
  • the corresponding frequency intervals may be the same or different.
  • This application can be applied to a scenario where the first frequency point is, of course, it can also be applied to a scenario where there are multiple first frequency points, for example, two.
  • the network device may determine M-1 second frequency points according to the first frequency point, where M is an integer greater than or equal to 2. For example, when the first frequency point is f1, one second frequency point can be determined; when the first frequency point is f2, three different second frequency points can be determined. And at least two different frequency points can be selected from the first frequency point and the M-1 second frequency points to send the SSB. Generally, the network device uses all the determined different frequency points to transmit the SSB, that is, when the first frequency point is n2, the first frequency point and three second frequency points are used to transmit the SSB.
  • the network device may determine at least one second frequency point according to the first frequency point, and any one of the second frequency points is different from the first frequency point; if the second frequency points are at least two When, the at least two second frequency points are also different; the at least two different frequency points used for sending the SSB belong to a frequency point set composed of the first frequency point and the at least one second frequency point.
  • the maximum number of inter-frequency frequency points M is related to N in the N-color multiplexing of the network equipment, where N is the frequency reuse factor.
  • the network device will use the first frequency point and all the second frequency points to transmit SSB, and the number of second frequency points is related to the frequency reuse factor N.
  • M is less than or equal to N.
  • the network device may preset a rule for determining at least one second frequency point based on the first frequency point. For example, when the maximum number M of inter-frequency frequency points is set at different values, the number of second frequency points that are greater than the first frequency point and the number of second frequency points that are smaller than the first frequency point are respectively corresponding.
  • any second frequency point is smaller than the first frequency point.
  • the first frequency point is f2
  • at least one second frequency point may be f2-(i-1)f0, respectively
  • i can be an integer from 2 to (M-1)
  • M is an integer greater than or equal to 2.
  • any second frequency point is greater than the first frequency point.
  • the first frequency point is n2
  • at least one second frequency point may be respectively f2+(i-1)f0, i takes an integer from 2 to (M-1), and M is an integer greater than or equal to 2.
  • Step 601 The terminal device determines the first frequency point for accessing the network device.
  • the terminal equipment is configured with multiple frequency points corresponding to multiple cells or areas.
  • the terminal equipment can use multiple frequency points to blindly detect SSB.
  • the frequency point that first receives the SSB is called the first frequency point, and the cell corresponding to the first frequency point Or the area is the cell or area where the terminal device is currently located.
  • Step 602 The terminal device determines at least one second frequency point according to the first frequency point.
  • Any one of the second frequency points is different from the first frequency point, and when there are at least two second frequency points, the at least two second frequency points are different.
  • the terminal device may determine at least one second frequency point according to a pre-configuration, such as the configuration shown in Table 1, according to the first frequency point.
  • the method is the same as that on the network device side described above, and the repetition is not repeated here.
  • Step 603 The terminal device uses at least two different frequency points to receive the synchronization signal block SSB from the network device in a time unit within a cycle; the at least two different frequency points used to receive the SSB The frequency point belongs to a frequency point set composed of the first frequency point and the at least one second frequency point.
  • the terminal device may select at least two different second frequency points from the first frequency point and the at least one second frequency point to receive the SSB from the network device.
  • Step 604 The terminal device accesses the network device according to the received one or more different SSBs.
  • the optimal SSB can be used to access the network device.
  • one said cycle includes at least two said time units, said SSBs received in different time units within one said cycle are different, and one said time unit uses said SSBs received at different frequency points. Different, the beams corresponding to different SSBs received in one time unit are different.
  • the different beams can be understood as different beam directions.
  • the SSB cannot be understood as different numbers included in the SS.
  • the terminal equipment can receive the SSB sent by the network equipment.
  • the terminal device first determines the first frequency point for accessing the network device, and then determines at least one second frequency point according to the first frequency point, and the terminal device selects at least two of the first frequency point and the second frequency point.
  • Different frequency points receive the SSB respectively, that is, the terminal device can receive at least two SSBs in one time unit.
  • the network device transmits at least two SSBs in one time unit. If multiple SSBs are configured on the network device side, compared to sending one SSB within one time unit, the configured SSB can be sent as soon as possible, and the terminal device can also take less time to receive the SSB configured by the network device. Therefore, the terminal device can reduce the time to access the network device.
  • the maximum number M of inter-frequency frequency points may be different.
  • M is 2
  • M is 4.
  • the terminal device and the network device can determine a second frequency point according to the first frequency point, and the determined first frequency point The two frequency points also support polarization multiplexing.
  • the terminal device and the network device can determine at least one, or at most three, second frequency points according to the first frequency point, The determined second frequency point also does not support polarization multiplexing.
  • the table 2 also configures a terrestrial network (Terrestrial Network, NT) and a non-terrestrial network (Non-Terrestrial Network, NTN), that is, a satellite network, these two different network types.
  • NT Terrestrial Network
  • NTN non-terrestrial Network
  • network equipment In terrestrial networks, network equipment generally uses full frequency coverage to communicate with terminal equipment, and the maximum number of inter-frequency points M is 1.
  • NTN non-terrestrial network
  • M the number of different frequency points can be greater than or equal to 2.
  • M the bandwidth for sending the SSB will become smaller, and the throughput performance will be reduced.
  • M 2, 3, 4, the performance is best.
  • the network device may use the at least two different frequency points within one time unit to send one SSB respectively; that is, one frequency point sends one SSB.
  • the network device uses the at least two different frequency points to respectively send two different SSBs within one time unit, that is, one frequency point sends two SSBs.
  • the beams corresponding to the two different SSBs transmitted by using one frequency point are distinguished by the spatial domain.
  • the beam-hopping satellite can use multiple different beams in the beam cluster to transmit the SSB in one time unit.
  • the beam cluster is composed of 4 different beams, or composed of 8 different beams.
  • the number of beams in a beam cluster is equal to or greater than the maximum number M of different frequency points.
  • a beam-hopping satellite can support 8 beams to transmit SSB at the same time, and the coverage of the satellite can include 32 beam areas, that is, 32 SSBs are configured.
  • the satellite uses 4 frequency points among fc, fc+f0, fc+2*f0, and fc+3*f0 to transmit SSB.
  • the satellite uses beam 0 to beam 7 to transmit SSB0 to SSB7, respectively.
  • the satellite uses beam 8 to beam 15 to transmit SSB8 to SSB15, respectively.
  • one frequency point can send two different SSBs, and the two same SSBs correspond to their respective beams (for example, beam 0 and beam 4, or beam 1 and beam 5, or beam 2 and beam 6. ) Can be distinguished by different spatial domains.
  • the beams corresponding to different SSBs sent by the network device using the same frequency in the adjacent time units may be the same or different.
  • the dwell time of the beam covering the area is shorter.
  • the network device sends the SSB, if the dwell time of the beam currently sending the SSB is relatively long, it may be postponed to the next time unit for sending the SSB, and the network device sends different SSBs in adjacent time units. The corresponding beams are the same. If the current residence time of the beam for sending the SSB is relatively short, it will not be postponed to the next time unit for sending the SSB, and the beams corresponding to different SSBs sent by the network device in adjacent time units are different.
  • a cluster of beams numbered 16 to 23 stays in the area covered by it for a long time, for example, both stay in the same area in the time unit T3 and the time unit T4. Then, the network device uses the same cluster of beams in the time unit T3 and the time unit T4, that is, 8 beams numbered 16 to 23 to send the SSB to the covered area. That is, the network equipment uses the beam numbered 16 to send SSB16 and SSB24, the beam numbered 17 to send SSB17 and SSB25, the beam numbered 18 to send SSB18 and SSB26, and so on.
  • the beams corresponding to different SSBs received by the terminal equipment at the same frequency point in adjacent time units may be the same or different.
  • the terminal device may also determine whether beams corresponding to different SSBs received at the same frequency point in adjacent time units are the same.
  • the SSBs with the same beams can be soft-combined to improve demodulation performance, and the resources corresponding to the SSBs with the same beam can be combined to improve resource utilization.
  • the access resources of the physical random access channel (PRACH) corresponding to the same SSB are combined.
  • PRACH physical random access channel
  • the terminal device determines whether the beams corresponding to different SSBs received using the same frequency point in adjacent time units are the same, it may be that the network device may use the first indication in the SSB to indicate the SSB corresponding to the SSB. Similarities and differences between beams. That is, it indicates whether the two SSBs of the same frequency point, the same spatial domain, and adjacent time units correspond to the same beam.
  • the terminal device determines, according to the first instruction, whether beams corresponding to different SSBs received at the same frequency point in adjacent time units are the same.
  • the first indication may be the original reserved bits in the SSB, or it may be the format of the original SSB is updated, and bits are added to the original SSB to carry the first indication.
  • the first indication may occupy 1 bit or more bits.
  • each SSB sent by the network device includes a first indication, and the first indication is used to instruct the network device to use the third frequency point to send the beam corresponding to the SSB in the first time unit.
  • the first time unit is earlier than the second time unit, or the first time unit is later than the second time unit.
  • the first time unit is T1
  • the second time unit is T2.
  • the first time unit is T4, and the second time unit is T3.
  • the terminal device may determine, according to the first indication in the SSB, that the beam corresponding to the SSB received by the terminal device using the third frequency point in the first time unit is different from the beam received using the third frequency point in the second time unit. Whether the beam corresponding to the other SSB is the same.
  • SSB18 may include a first indication, and the first indication may be used to indicate whether the beam corresponding to SSB18 is the same as the beam corresponding to SSB26, or whether the beam corresponding to SSB18 and SSB10 are the same.
  • the first indication in SSB18 cannot indicate whether the beams corresponding to SSB18 and SSB25 are the same, because the frequency of sending SSB18 is different from the frequency of sending SSB25.
  • a beam cluster may reside in an area for three time units or more. In these three time units, although the network device sends multiple SSBs, the terminal device may not receive all of them.
  • a beam cluster resides in three time units, such as T2, T3, and T4, the beams corresponding to SSB10, SSB18, and SSB26 are the same; the beams corresponding to SSB11, SSB19, and SSB27 are the same,...
  • the terminal device receives SSB10 and SSB11 within the time T2, within the time unit T3, only SSB19 is received, and within the time unit T4, only SSB26 is received.
  • the terminal device can infer that SSB26 and SSB10 If the corresponding beams are the same, the SSB26 and SSB10 with the same beam can be soft combined to improve the demodulation performance, and the corresponding resources are combined to improve resource utilization.
  • the first indication included in the SSB may indicate that the beams corresponding to different SSBs sent by the network device using the same frequency point in different time units are the same. Then, in one cycle, the beams corresponding to different SSBs transmitted at the same frequency in any two adjacent time units are the same.
  • the above-mentioned first indication may be included in the master information block (Master Information Block, MIB) of the SSB, and the MIB information element is as follows:
  • Beam-relation ENUMERATED ⁇ 0, 1 ⁇ can represent the first indication described above.
  • the terminal device when the terminal device receives the SSB, it may not receive it in the first time unit of a cycle, that is, it does not know which SSB is sent by the network device. That is, the number of the SSB is not known. Based on this, the SSB may include a second indication, and the second indication is used to indicate the spatial domain information and time unit information of the SSB sent by the network device. Generally, when the terminal device receives the SSB, it is clear at which frequency point the SSB was received. There is no need to set bits in the SSB to indicate the frequency information of the SSB. Of course, the bits of the frequency information can also be set.
  • the terminal device knows the number of SSBs configured by the network device, the number of time units in a cycle, and the number of different frequency points when the network device sends the SSB. Based on this, the terminal device can obtain the number of the SSB according to the time unit information, frequency point information, and spatial domain information corresponding to the SSB.
  • the second indication is used to indicate the number of the SSB, and the number of the SSB is indicated by time unit information, frequency point information, and spatial domain information.
  • one bit can indicate two different time units.
  • 3 or 4 time units are included in a cycle, 2bits can be used to indicate different time units.
  • 3bits can be used to indicate different time units.
  • 1bit can indicate two different spatial domains
  • 2bit can indicate 4 different spatial domains at most
  • SSB16 and SSB20 appear in time unit T3, and 10 is used to indicate time unit T3; SSB24 appears in time unit T4, and 11 is used to indicate time unit T4.
  • SSB16 and SSB20 have different spatial domains, which are indicated by 0 and 1 respectively.
  • the frequency domain position can be implicitly indicated according to the frequency point where the SSB is located, that is, ssb16 corresponds to frequency point 00, and ssb17 corresponds to frequency point 01; in the spatial domain, display bits can be used to indicate different beams of the same frequency at the same time (such as ssb16 and ssb16). ssb20 corresponding beam).
  • a communication device 800 is provided.
  • the communication device 800 can perform various steps in the above-mentioned method by the terminal device, and in order to avoid repetition, the details are not described herein again.
  • the communication device 800 may be a network device or a chip applied to the network device.
  • the communication device 800 includes: a transceiver module 810, a processing module 820, and optionally, a storage module 830; the processing module 820 can be connected to the storage module 830 and the transceiver module 810 respectively, and the storage module 830 can also be connected to the transceiver module 810. Connected:
  • the storage module 830 is used to store computer programs
  • the processing module 820 is configured to determine a first frequency point for accessing network equipment; and determine at least one second frequency point according to the first frequency point, and any one of the second frequency points and the The first frequency points are different. When there are at least two second frequency points, the at least two second frequency points are different; and the transceiver module 810 uses at least two different frequency points in one time unit in one cycle. Receive the synchronization signal block SSB from the network device at the frequency points respectively; the at least two different frequency points for receiving the SSB belong to the frequency point composed of the first frequency point and the at least one second frequency point gather;
  • the processing module 820 is further configured to access the network device according to the received one or more different SSBs;
  • one said cycle includes at least two said time units, said SSBs received in different time units within one said cycle are different, and one said time unit uses said SSBs received at different frequency points. Different, the beams corresponding to different SSBs received in one time unit are different.
  • the processing module 820 is further configured to determine whether beams corresponding to different SSBs received at the same frequency point in adjacent time units are the same.
  • the processing module 820 when the processing module 820 is used to determine whether the beams corresponding to different SSBs received at the same frequency point in adjacent time units are the same, it is specifically used to:
  • the received SSB includes a first indication, and the first indication is used to indicate that the beam corresponding to the SSB sent by the network device using the third frequency point in the first time unit is different from that in the second time unit. Whether the beams corresponding to the SSB sent by using the third frequency point are the same, wherein, the second time unit is adjacent to the first time unit, and the third frequency point is the at least two different frequencies Any one of the points; according to the first instruction, it is determined that the SSB received using the third frequency point in the first time unit corresponds to the SSB received using the third frequency point in the second time unit Whether the beams are the same.
  • the processing module 820 when used to determine at least one second frequency point according to the first frequency point, it is specifically configured to: determine a second frequency point according to the first frequency point, and The first frequency point supports polarization multiplexing; or at least one or at most three second frequency points are determined according to the first frequency point, and the first frequency point does not support polarization multiplexing.
  • the processing module 820 when used to receive the SSB from the network device at least two different frequencies within a time unit through the transceiver module 810, it is specifically used to:
  • the transceiver module 810 adopts the at least two different frequency points to receive one SSB from the network device in one time unit; or, in one time unit, adopts the at least Two different frequency points respectively receive two different SSBs from the network device, wherein, in one time unit, the two different SSBs received at one frequency point correspond to the beam passing spaces respectively Domain distinction.
  • the SSB includes a second indication, and the second indication is used to indicate the spatial domain information and time unit information of the SSB sent by the network device.
  • a communication device 900 is provided.
  • the communication device 900 can perform the steps performed by the network device in the foregoing method, and in order to avoid repetition, the details are not described herein again.
  • the communication device 900 may be a network device or a chip applied to the network device.
  • the communication device 900 includes: a transceiver module 910, a processing module 920, and optionally, a storage module 930; the processing module 920 can be connected to the storage module 930 and the transceiver module 910 respectively, and the storage module 930 can also be connected to the transceiver module 910 Connected:
  • the storage module 930 is used to store computer programs
  • the processing module 920 is configured to use the transceiver module 910 to use at least two different frequency points to respectively transmit the synchronization signal block SSB within a time unit in a cycle; wherein, one cycle includes at least two For the time unit, the SSBs sent in different time units within one period are different, the SSBs sent by using different frequency points in one time unit are different, and the SSBs sent in one time unit are different. The beams corresponding to the SSB are different.
  • the processing module 920 is further configured to determine at least one second frequency point according to the first frequency point, and any one of the second frequency points is different from the first frequency point; When there are at least two second frequency points, the at least two second frequency points are different; the at least two different frequency points used for sending SSB belong to the first frequency point and the at least one second frequency point.
  • the beams corresponding to different SSBs that are transmitted using the same frequency point in adjacent time units are the same or different.
  • the SSB includes a first indication
  • the first indication is used to instruct the network device to use the third frequency point to send the beam corresponding to the SSB within the first time unit, which is different from the Whether the beams corresponding to the SSB sent by using the third frequency point in the second time unit are the same, where the second time unit is adjacent to the first time unit, and the third frequency point is the at least two Any one of two different frequency points.
  • the processing module 920 when used to determine at least one second frequency point according to the first frequency point, it is specifically configured to determine a second frequency point according to the first frequency point.
  • One frequency point supports polarization multiplexing; or at least one or at most three second frequency points are determined according to the first frequency point, and the first frequency point does not support polarization multiplexing.
  • the processing module 920 when used to send the SSB through the transceiver module 910 using at least two different frequency points within a time unit, it is specifically configured to: In one time unit, use the at least two different frequency points to send one SSB respectively; or, in one time unit, use the at least two different frequency points to send two different frequency points respectively.
  • the SSB wherein, in one time unit, the beams corresponding to the two different SSBs transmitted by using one frequency point are distinguished by spatial domain.
  • the SSB includes a second indication, and the second indication is used to indicate the spatial domain information and time unit information of the SSB sent by the network device.
  • FIG. 10 is a schematic block diagram of a communication device 100 according to an embodiment of the present application. It should be understood that the communication device 100 can execute various steps executed by the terminal device, and in order to avoid repetition, details are not described herein again.
  • the communication device 100 includes: a processor 101 and a memory 103, and the processor 101 and the memory 103 are electrically coupled;
  • the memory 103 is used to store computer program instructions
  • the processor 101 is configured to execute part or all of the computer program instructions in the memory.
  • the device determines at least two different frequency points, using at least two Different frequency points receive SSB from network equipment.
  • a transceiver 102 for communicating with other devices; for example, receiving an SSB sent by a network device.
  • the communication device 100 shown in FIG. 10 may be a chip or a circuit.
  • a chip or circuit can be installed in a terminal device.
  • the aforementioned transceiver 102 may also be a communication interface.
  • the transceiver includes a receiver and a transmitter.
  • the communication device 100 may also include a bus system.
  • the processor 101, the memory 103, and the transceiver 102 are connected by a bus system.
  • the processor 101 is used to execute instructions stored in the memory 103 to control the transceiver to receive and send signals, and complete the steps of the terminal device in the communication method of this application.
  • the memory 103 may be integrated in the processor 101, or may be provided separately from the processor 101.
  • the function of the transceiver 102 may be implemented by a transceiver circuit or a dedicated transceiver chip.
  • the processor 101 may be implemented by a dedicated processing chip, a processing circuit, a processor, or a general-purpose chip.
  • FIG. 11 is a schematic block diagram of a communication device 110 according to an embodiment of the present application. It should be understood that the communication device 110 can perform various steps performed by the network device, and in order to avoid repetition, details are not described herein again.
  • the communication device 110 includes: a processor 111 and a memory 113, and the processor 111 and the memory 113 are electrically coupled;
  • the memory 113 is used to store computer program instructions
  • the processor 111 is configured to execute part or all of the computer program instructions in the memory.
  • the device determines at least two different frequency points, using at least two Different frequency points send SSB to terminal equipment.
  • a transceiver 112 for communicating with other devices; for example, sending SSB to a terminal device.
  • the communication device 110 shown in FIG. 11 may be a chip or a circuit.
  • a chip or circuit can be installed in a network device.
  • the aforementioned transceiver 112 may also be a communication interface.
  • the transceiver includes a receiver and a transmitter.
  • the communication device 110 may also include a bus system.
  • the processor 111, the memory 113, and the transceiver 112 are connected by a bus system.
  • the processor 111 is used to execute the instructions stored in the memory 113 to control the transceiver to receive and send signals, and complete the steps of the network device in the communication method of this application.
  • the memory 113 may be integrated in the processor 111, or may be provided separately from the processor 111.
  • the function of the transceiver 112 may be implemented by a transceiver circuit or a dedicated transceiver chip.
  • the processor 111 may be implemented by a dedicated processing chip, a processing circuit, a processor, or a general-purpose chip.
  • the processor may be a central processing unit (CPU), a network processor (NP), or a combination of CPU and NP.
  • CPU central processing unit
  • NP network processor
  • the processor may further include a hardware chip or other general-purpose processors.
  • the above-mentioned hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD) or a combination thereof.
  • the above-mentioned PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a general array logic (generic array logic, GAL) and other programmable logic devices , Discrete gates or transistor logic devices, discrete hardware components, etc. or any combination thereof.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the memory mentioned in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • DDR SDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • Enhanced SDRAM, ESDRAM Enhanced Synchronous Dynamic Random Access Memory
  • Synchronous Link Dynamic Random Access Memory Synchronous Link Dynamic Random Access Memory
  • DR RAM Direct Rambus RAM
  • the embodiment of the present application provides a computer storage medium storing a computer program, and the computer program includes a method for executing the above-mentioned communication method.
  • the embodiments of the present application provide a computer program product containing instructions, which when run on a computer, cause the computer to execute the communication method provided above.
  • this application can be provided as methods, systems, or computer program products. Therefore, this application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, this application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device.
  • the device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
  • These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment.
  • the instructions provide steps for implementing the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

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Abstract

本申请涉及无线通信技术领域，公开了一种通信的方法及装置，用以解决目前终端接入网络设备时间长的问题。终端确定接入网络设备的第一频点。然后根据第一频点，确定至少一个第二频点，任一第二频点与第一频点不同，至少两个第二频点也不同。在第一频点和至少一个第二频点中挑选至少两个不同的第二频点，在一个周期内的一个时间单元内，采用至少两个不同的频点分别接收来自网络设备的SSB。终端根据接收到的一个或多个不同的SSB，接入网络设备。一个时间单元采用不同的频点接收到的SSB不同。终端可以根据至少两个不同的频点接收SSB。终端也可以采用较少的时间接收完网络设备配置的SSB。从而，终端可以减少接入网络设备的时间。

Description

一种通信的方法及装置
相关申请的交叉引用
本申请要求在2020年02月10日提交中国专利局、申请号为202010085210.0、申请名称为“一种通信的方法及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请实施例涉及无线通信技术领域，尤其涉及一种通信的方法及装置。
背景技术
终端设备在开机后，可以接收网络设备发送的同步信号块(SSB)，并根据SSB接入到网络设备上。具体过程可以如下：
网络设备中配置有多个小区的频点，例如图1所示，接入该小区的频点为fc。需要注意的是，此处的频点fc实际是指以fc为中心频点的频段SSB bandwidth，此处将频段简称为频点fc。SSB bandwidth为小区带宽(Cell bandwidth)的一部分带宽。网络设备采用频点fc、在不同的时间单元分别发送不同SSB。例如在时间单元T1上发送的SSB0、在时间单元T2上发送SSB1、在时间单元T3上发送SSB2。
对于终端设备来说，终端设备中配置有接入多个小区的频点，终端设备采用多个不同的频点盲检SSB，当接收到SSB时，可以根据接收到的SSB中的信息接入对应的小区。
需要注意的是，网络设备如果配置了n个不同的SSB，例如分别为SSB0至SSBn-1，可以分为n个时间单元(例如分别为T1至Tn)分别发送。网络设备可以循环地遍历发送这n个SSB。
一般情况下，终端设备遍历一个周期，根据在一个周期内接收到的一个或多个SSB的信息接入网络设备。
在网络中配置的SSB较多时，采用如图1所示的同频、分时扫描发送SSB的方式，终端设备遍历一个周期的时间较长，从而终端设备接入到网络的时间也会增大。
发明内容
本申请实施例提供一种通信的方法及装置，用以解决目前终端设备接入网络时间长的问题。
第一方面，提供了一种通信的方法，终端设备可以确定接入网络设备的第一频点。然后，所述终端设备可以根据所述第一频点，确定至少一个第二频点，任一所述第二频点与所述第一频点不同，如果所述第二频点为至少两个，所述至少两个第二频点也不同。进一步地，所述终端设备可以在所述第一频点和所述至少一个第二频点中挑选至少两个不同的第二频点，所述终端设备可以在一个周期内的一个时间单元内，采用所述至少两个不同的频点分别接收来自所述网络设备的同步信号块SSB。也就是用于接收SSB的所述至少两个不同的频点属于所述第一频点和所述至少一个第二频点组成的频点集合。最后，所述终端 设备根据接收到的一个或多个不同的所述SSB，接入所述网络设备。其中，一个所述周期包括至少两个所述时间单元，一个所述周期内的不同时间单元内分别接收到的所述SSB不同，在一个所述时间单元内采用不同的频点接收到的所述SSB不同，在一个所述时间单元内接收到的不同的所述SSB对应的波束不同。
终端设备先确定接入网络设备的第一频点，再根据所述第一频点确定至少一个第二频点，终端设备在第一频点和第二频点中选择至少两个不同的频点分别接收SSB，也就是终端设备在一个时间单元内可以接收到至少两个SSB。相应的，网络设备在一个时间单元中发送至少两个SSB。如果网络设备侧配置了多个SSB，相比在一个时间单元内发送一个SSB，可以尽快发送完配置的SSB，则终端设备也可以采用较少的时间接收完网络设备配置的SSB。从而，终端设备可以减少接入网络设备的时间。所述网络设备可以是地面的网络设备，也可以是非地面的网络设备，例如卫星。
在一种可能的实现中，所述终端设备还可以确定在相邻的所述时间单元内采用相同的频点接收到的不同的所述SSB对应的波束是否相同。也就是终端设备采用同一频点，前后接收到的两个SSB对应的波束是否相同。
卫星网络业务不均匀，一个区域的终端用户比较多时，覆盖该区域的波束的驻留时间较长，一个区域的终端用户比较少时，覆盖该区域的波束的驻留时间比较短。网络设备在发送SSB时，如果当前发送SSB的波束的驻留时间比较长，则可能会顺延至下一发送SSB的时间单元，则网络设备在相邻的时间单元内发送的不同的所述SSB对应的波束相同。如果当前发送SSB的波束的驻留时间比较短，则不会顺延至下一个发送SSB的时间单元，则网络设备在相邻的时间单元内发送的不同的所述SSB对应的波束不同。在异频发送SSB的基础上，所述终端设备还可以确定在相邻的所述时间单元内采用相同的频点接收到的不同的所述SSB对应的波束是否相同。在相同的情况下，可以将波束相同的SSB进行软合并，提升解调性能，以及进行资源合并，提升资源利用率。
在一种可能的实现中，所述终端设备确定在相邻的所述时间单元内采用相同的频点接收到的不同的所述SSB对应的波束是否相同时，可以是所述终端设备接收到的所述SSB中包括第一指示，所述第一指示用于指示所述网络设备在第一时间单元内采用第三频点发送的所述SSB对应的波束，与在第二时间单元内采用所述第三频点发送的SSB对应的波束是否相同。其中，所述第二时间单元与所述第一时间单元相邻，所述第三频点为所述至少两个不同的频点中的任一个。所述终端设备可以根据所述第一指示，确定在第一时间单元内采用第三频点接收到的所述SSB与在第二时间单元内采用所述第三频点接收到的SSB对应的波束是否相同。所述第一时间单元可以早于所述第二时间单元，也可以晚于所述第二时间单元。
在SSB中添加第一指示，来指示相同频点、相同空间域，相邻时间单元的两个SSB是否对应同一波束。终端设备可以根据SSB中的第一指示来确定在相邻的所述时间单元内采用相同的频点接收到的不同的所述SSB对应的波束是否相同。所述第一指示可以占用1bit，也可以占用更多比特。
在一种可能的实现中，所述终端设备根据第一频点，可以确定出一个第二频点，所述第一频点支持极化复用。该方式可以适用于极化复用场景。
或者，所述终端设备根据第一频点，确定至少一个、至多三个第二频点，所述第一频点不支持极化复用。该方式可以适用于无极化复用场景。
用于接收SSB的频点数量与终端设备的N色复用中的N有关，N为频率复用因子。一般情况下，终端设备会采用所述第一频点和所有的第二频点接收SSB，则第二频点的数量与N有关。
在一种可能的实现中，所述终端设备在一个所述时间单元内，可以采用所述至少两个不同的频点，分别接收来自所述网络设备的一个SSB，也就是一个频点接收一个SSB。
或者，所述终端设备在一个所述时间单元内，可以采用所述至少两个不同的频点，分别接收来自所述网络设备的两个不同的SSB，也就是一个频点接收到两个SSB。其中，在一个所述时间单元，采用一个频点接收到的所述两个不同的SSB分别对应的波束通过空间域区分。
在一种可能的实现中，不同的SSB包含的编号不同。
在一种可能的实现中，所述SSB包括第二指示，所述第二指示可以用于指示所述网络设备发送的所述SSB的空间域信息和时间单元信息。
进一步地，所述第二指示还可以用于指示所述网络设备发送的所述SSB的频点信息。
在一种可能的实现中，所述至少两个不同的频点中相邻的频点的频率间隔相同。
第二方面，提供了一种通信的方法，网络设备可以在一个周期内的一个时间单元内，采用至少两个不同的频点分别发送同步信号块SSB。其中，一个所述周期包括至少两个所述时间单元，在一个所述周期内的不同时间单元内分别发送的所述SSB不同，在一个所述时间单元采用不同的频点发送的所述SSB不同，在一个所述时间单元内发送的不同的所述SSB对应的波束不同。
网络设备在一个时间单元中发送至少两个SSB。如果网络设备侧配置了多个SSB，相比在一个时间单元内发送一个SSB，可以尽快发送完配置的SSB，则终端设备也可以采用较少的时间接收完网络设备配置的SSB。从而，终端设备可以减少接入网络设备的时间。所述网络设备可以是地面的网络设备，也可以是非地面的网络设备，例如卫星。
在一种可能的实现中，所述网络设备可以根据第一频点，确定至少一个第二频点，任一所述第二频点与所述第一频点不同；如果所述第二频点为至少两个时，所述至少两个第二频点也不同；用于发送SSB的所述至少两个不同的频点属于所述第一频点和所述至少一个第二频点组成的频点集合。
网络设备可以在所述第一频点和所述至少一个第二频点中挑选至少两个不同的第二频点作为发送SSB的频点。一般情况下，将所述第一频点和所有的第二频点作为发送SSB的频点。
在一种可能的实现中，相邻的所述时间单元内采用相同频点发送的不同的所述SSB对应的波束相同或不同。
卫星网络业务不均匀，一个区域的终端用户比较多时，覆盖该区域的波束的驻留时间较长，一个区域的终端用户比较少时，覆盖该区域的波束的驻留时间比较短。网络设备在发送SSB时，如果当前发送SSB的波束的驻留时间比较长，则可能会顺延至下一个发送SSB的时间单元，则网络设备在相邻的时间单元内发送的不同的所述SSB对应的波束相同。如果当前发送SSB的波束的驻留时间比较短，则不会顺延至下一个发送SSB的时间单元，则网络设备在相邻的时间单元内发送的不同的所述SSB对应的波束不同。在不同的SSB对应的波束相同的情况下，终端设备可以将波束相同的SSB进行软合并，提升解调性能， 以及进行资源合并，提升资源利用率。
在一种可能的实现中，所述SSB包括第一指示，所述第一指示用于指示所述网络设备在第一时间单元内采用第三频点发送的所述SSB对应的波束，与在第二时间单元内采用所述第三频点发送的SSB对应的波束是否相同，其中，所述第二时间单元与所述第一时间单元相邻，所述第三频点为所述至少两个不同的频点中的任一个。所述第一时间单元早于所述第二时间单元，或者第一时间单元晚于所述第二时间单元。
在SSB中添加第一指示，来指示相同频点、相同空间域，相邻时间单元的两个SSB是否对应同一波束。以便终端设备可以根据SSB中的第一指示来确定在相邻的所述时间单元内采用相同的频点接收到的不同的所述SSB对应的波束是否相同。所述第一指示可以占用1bit，也可以占用更多比特。
在一种可能的实现中，所述网络设备根据第一频点，可以确定出一个第二频点，所述第一频点支持极化复用。该方式可以适用于极化复用场景。
或者，所述网络设备根据第一频点，确定出至少一个、至多三个第二频点，所述第一频点不支持极化复用。该方式可以适用于无极化复用场景。
用于发送SSB的频点数量与网络设备的N色复用中的N有关，N为频率复用因子。一般情况下，网络设备会采用所述第一频点和所有的第二频点发送SSB，则第二频点的数量与N有关。
在一种可能的实现中，所述网络设备在一个所述时间单元内，可以采用所述至少两个不同的频点，分别发送一个SSB；也就是一个频点发送一个SSB。
或者，所述网络设备在一个所述时间单元内，可以采用所述至少两个不同的频点，分别发送两个不同的SSB，也就是一个频点发送两个SSB。其中，在一个所述时间单元，采用一个频点发送的所述两个不同的SSB分别对应的波束通过空间域区分。
在一种可能的实现中，不同的SSB包含的编号不同。
在一种可能的实现中，所述SSB包括第二指示，所述第二指示可以用于指示所述网络设备发送的所述SSB的空间域信息和时间单元信息。
进一步地，所述第二指示还可用于指示所述网络设备发送的所述SSB的频点信息。
在一种可能的实现中，所述至少两个不同的频点中相邻的频点的频率间隔相同。
第三方面及任一可能的实现，至，第十三方面及任一可能的实现，的技术效果可以参见第一方面、第二方面及对应的可能的实现，不再重复赘述。
第三方面，提供了一种通信装置，所述通信装置具有实现上述方法实施例中的终端设备的功能。这些功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的功能模块。
第四方面，提供了一种通信装置，所述通信装置具有实现上述方法实施例中的网络设备的功能。这些功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的功能模块。
第五方面，提供了一种通信装置，该通信装置可以为上述方法实施例中的终端设备，或者为设置在终端设备中的芯片。该通信装置包括收发器以及处理器，可选的，还包括存储器，其中，该存储器用于存储计算机程序或指令，处理器分别与存储器、收发器耦合， 当处理器执行所述计算机程序或指令时，使通信装置执行上述方法实施例中由终端设备所执行的方法。
第六方面，提供了一种通信装置，该通信装置可以为上述方法实施例中的网络设备，或者为设置在网络设备中的芯片。该通信装置包括收发器以及处理器，可选的，还包括存储器，其中，该存储器用于存储计算机程序或指令，处理器分别与存储器、收发器耦合，当处理器执行所述计算机程序或指令时，使通信装置执行上述方法实施例中由网络设备所执行的方法。
第七方面，提供了一种计算机程序产品，所述计算机程序产品包括：计算机程序代码，当所述计算机程序代码在计算机上运行时，使得计算机执行上述第一方面及第一方面任一可能的实现中由终端设备执行的方法。
第八方面，提供了一种计算机程序产品，所述计算机程序产品包括：计算机程序代码，当所述计算机程序代码在计算机上运行时，使得计算机执行上述第二方面及第二方面任一可能的实现中由网络设备执行的方法。
第九方面，提供了一种芯片***，用于实现上述第一方面及第一方面任一可能的实现的方法中终端设备的功能。
在一种可能的设计中，该芯片***可以包括收发器，所述收发器例如接收或发送上述方法中所涉及的数据和/或信息。
在一种可能的设计中，所述芯片***还包可以括存储器，所述存储器，用于保存程序指令和/或数据。该芯片***，可以由芯片构成，也可以包括芯片和其他分立器件。
在另一种可能的设计中，所述芯片***还可以包括通信接口，所述通信接口可以用于其他器件的数据交互，所述通信接口例如为芯片上的引脚。
第十方面，提供了一种芯片***，用于实现上述第二方面及第二方面任一可能的实现的方法中网络设备的功能。
在一种可能的设计中，该芯片***可以包括收发器，所述收发器例如接收或发送上述方法中所涉及的数据和/或信息。
在一种可能的设计中，所述芯片***还包可以括存储器，所述存储器，用于保存程序指令和/或数据。该芯片***，可以由芯片构成，也可以包括芯片和其他分立器件。
在另一种可能的设计中，所述芯片***还可以包括通信接口，所述通信接口可以用于其他器件的数据交互，所述通信接口例如为芯片上的引脚。
第十一方面，提供了一种计算机可读存储介质，该计算机可读存储介质存储有计算机程序，当该计算机程序被运行时，实现上述第一方面及第一方面任一可能的实现中由终端设备执行的方法。
第十二方面，提供了一种计算机可读存储介质，该计算机可读存储介质存储有计算机程序，当该计算机程序被运行时，实现上述第二方面及第二方面任一可能的实现中由网络设备执行的方法。
第十三方面，提供了一种通信***，该***可以包括执行上述第一方面和第一方面的任一可能的实现中所述的方法的终端设备、以及执行上述第二方面和第二方面的任一可能的实现中所述的方法的网络设备。
附图说明
图1为现有技术中提供的一种同频、分时发送SSB的示意图；
图2为本申请实施例中提供的一种卫星通信***示意图；
图3为本申请实施例中提供的一种跳波束通信过程示意图；
图4A为本申请实施例中提供的一种同步信号块SSB的结构示意图；
图4B为本申请实施例中提供的一种周期性发送SSB的过程示意图；
图5为本申请实施例中提供的一种异频传输SSB的示意图；
图6为本申请实施例中提供的一种终端设备接收SSB的通信过程示意图；
图7A、图7B、图7C为本申请实施例中提供的一种异频发送SSB的示意图；
图8、图9、图10、图11为本申请实施例中提供的一种通信装置示意图。
具体实施方式
下面将结合附图，对本申请实施例进行详细描述。
本申请实施例的技术方案可以应用于各种通信***，例如：地面通信***，非地面通信***，例如卫星通信***。其中，所述卫星通信***可以与传统的移动通信***相融合。例如：所述移动通信***可以为***(4th Generation，4G)通信***(例如，长期演进(long term evolution，LTE)***)，全球互联微波接入(worldwide interoperability for microwave access，WiMAX)通信***，第五代(5th Generation，5G)通信***(例如，新无线(new radio，NR)***)，及未来的移动通信***等。
示例的，图2为本申请适用的一种可能的卫星通信***架构示意图。如果将卫星通信***与地面通信***做类比，可以将卫星看做是地面的一个或多个网络设备，例如基站。接入点1、接入点2、甚至接入点3至接入点n(图中未标出)，卫星向终端设备提供通信服务，卫星还可以连接到核心网设备(例如AMF)。卫星可以为非静止轨道(non-geostationary earth orbit，NGEO)卫星或静止轨道(geostationary earth orbit，GEO)卫星。
本申请也适用于地面通信***，则图2中的卫星可替换为地面的网络设备。
为便于理解本申请实施例，接下来对本请的应用场景进行介绍，本申请实施例描述的业务场景是为了更加清楚的说明本申请实施例的技术方案，并不构成对于本申请实施例提供的技术方案的限定，本领域普通技术人员可知，随着新业务场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。
一个卫星的覆盖范围可达几千甚至几万千米，一个波束的覆盖范围可达几十米甚至几千米。为了支持卫星的广域覆盖，一个卫星通常要配置几十、几百、甚至更多波束。为了缓解单个卫星载荷小且覆盖范围广的矛盾，可以采用跳波束的方式进行区域覆盖。即一个卫星可以配置较多的波束覆盖较广的区域，但在同一时间单元内只使用较少数量的波束进行区域覆盖，通过在不同时间单元使用的多个波束覆盖较广的区域。例如可以参见图3所示，卫星配置了16个波束来覆盖较广的区域，但在一个时间单元只使用4个波束进行区域覆盖。在时间单元T1中，使用编号为0、1、4、5的四个波束进行区域覆盖；在时间单元T2中，使用编号为2、3、6、7四个波束进行区域覆盖。依此类推，通过T1、T2、T3、T4分时的方式服务单星覆盖的所有区域(即16个波束对应的区域)。再例如，图7A和图 7B所示，卫星配置了32个波束来覆盖较广的区域，在一个时间单元内只使用8个波束进行区域覆盖。在时间单元T1中，使用编号为0至7的8个波束进行区域覆盖，在时间单元T2中，使用编号为8至15的8个波束进行区域覆盖。
一个时间单元可以是几十毫秒，几毫秒，甚至更小时间粒度。在一个时间单元内进行区域覆盖的多个波束可以称为波束簇，波束簇可以由4或8个波束组成，例如图7A中编号为0至7的8个波束为一个波束簇，图7B中编号为8-15的8个波束为一个波束簇。
在卫星通信网络中，一个卫星中配置多个波束，每个波束可以看作是一个小区中的波束或一个单独的小区。由于卫星波束的中心位置与边缘位置的信号强度差别不大，若采用全频复用的方式进行通信，则相邻波束间会产生强干扰。因此，在卫星通信***中，通常采用多色复用(包含频率复用和极化复用)的方式来减少卫星波束之间的干扰。仍以图1所示，在时间单元T1内，0、1、4、5四个波束对应的频段不同，例如可以将***带宽等分为四个频段，每个频段的中心频点分别为f1、f2、f3和f4，则波束0、1、4、5分别对应中心频点分别为f1、f2、f3和f4的频段。卫星中相邻的波束使用不同的频率与终端设备进行通信，从而达到抑制干扰的效果。
如图1所示，网络设备在一个时间单元内采用一个频点发送一个SSB，网络设备发送完配置的SSB的时间比较长，则终端设备接收完SSB的时间也会比较长，从而终端设备接入网络设备的时延较长。基于该技术问题，本申请提出了网络设备在一个时间单元内采用至少两不同的频点分别发送SSB的方式，则网络设备在一个时间单元内可以发送至少两个SSB。相应的，终端设备在一个时间单元内可以采用至少两个不同的频点分别接收SSB。网络设备发送完配置的SSSB的时间缩短，则终端设备接入网络设备的时间也会缩短。
为便于理解本申请实施例，以下对本申请实施例的部分用语进行解释说明，以便于本领域技术人员理解。
1)、终端设备，又称之为用户设备(user equipment，UE)、移动台(mobile station，MS)、移动终端(mobile terminal，MT)、终端等，是一种向用户提供语音和/或数据连通性的设备。例如，终端设备包括具有无线连接功能的手持式设备、车载设备、物联网设备等。目前，终端设备可以是：手机(mobile phone)、平板电脑、笔记本电脑、掌上电脑、移动互联网设备(mobile internet device，MID)、可穿戴设备，虚拟现实(virtual reality，VR)设备、增强现实(augmented reality，AR)设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程手术(remote medical surgery)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端，或智慧家庭(smart home)中的无线终端等。
2)、网络设备，用于与终端设备通信的设备，该网络设备可以是非地面的网络设备，例如卫星。也可以是地面的网络设备，例如可以是基站，还可以是LTE***中的演进型基站(evoled NodeB，eNB或eNodeB)，还可以是云无线接入网络(cloud radio access network，CRAN)场景下的无线控制器，或者该网络设备可以为中继站、接入点、车载设备以及5G网络中的新一代基站(next generation Node B，gNodeB)等，本申请实施例并不限定。
3)核心网设备，包括但不限于接入以及移动性管理功能网元(access and mobility management function，AMF)，AMF具有核心网控制面功能，提供用户的移动性管理以及接入管理的功能。
4)、卫星波束，指由卫星天线发射出来的电磁波在地球表面上形成的形状，就像手电筒的光束有一定的范围。或者卫星发射的信号非360°的辐射，而是在一定的方位集中发射的信号波。
5)同步信号块SSB(SS/PBCH block)由主同步信号(PSS)、辅同步信号(SSS)和PBCH组成，具体如图4A所示。
NR中，SSB采用周期形式发送，同一周期内的多个波束方向的SSB可以限定在5ms内，如图4B所示，SSB的周期可以为20ms，多个波束方向的SSB限定在5ms内，多个波束方向的SSB在图4B中可以称为SS burst Set。图4B中采用了15kHz的子载波间隔SCS，因此1ms内的符号个数为14个。每个SS-block占用了4个连续符号，1ms内包含两个SSB，相邻SSB之间有一定的符号间隔。
6)波束扫描：某一个时间单元将能量集中在某一个方向，这个方向就可以把信号发送的更远，但是其他方向接收不到信号，下一个时间单元朝着另一个方向发送，最终通过波束不断的改变方向，实现多个区域的覆盖。
本申请中的“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。
本申请中所涉及的多个，是指两个或两个以上。
在本申请的描述中，“第一”、“第二”等词汇，仅用于区分描述的目的，而不能理解为指示或暗示相对重要性，也不能理解为指示或暗示顺序。
另外，在本申请实施例中，“示例的”一词用于表示作例子、例证或说明。本申请中被描述为“示例”的任何实施例或实现方案不应被解释为比其它实施例或实现方案更优选或更具优势。确切而言，使用示例的一词旨在以具体方式呈现概念。
需要注意的是，本申请中的第一频点、第二频点可以是一个频点，也可以指以所述第一频点或第二频点为中心频点的频段。
本申请提供的通信方法中，网络设备可以在一个周期内的一个时间单元内，采用至少两个不同的频点分别发送SSB。其中，一个所述周期包括至少两个所述时间单元，一个所述周期内的不同时间单元内分别发送的所述SSB不同，一个所述时间单元采用不同的频点发送的所述SSB不同，一个所述时间单元内发送的不同的所述SSB对应的波束不同。该周期可以是5ms内，也可以是20ms，还也可以是160ms。所述波束不同可以理解为波束的方向不同。所述SSB不同可以理解为SS包含的编号不同。
网络设备在每个时间单元内，重复进行上述过程，并且在每个周期内重复前一周的过程。
如图5所示，网络设备配置了12个SSB，分别为SSB0至SSB11。网络设备在一个时间单元采用fc、f0+fc、2f0+fc、3f0+fc、这4个频点分别发送SSB。一个周期内包括3个时间单元，分别为T1、T2、T3。网络设备在这三个时间单元可以将配置的12个SSB发送完成。
网络设备用于发送SSB的至少两个不同的频点可以是网络设备针对单个小区或者一个区域预先配置好的。预先配置的相邻的两个频点的频率间隔可以是相同的，也可以是不同的。
可选地，网络设备也可以如表1所示，配置了小区或一个区域的一个频点，例如定义 为第一频点，以及配置了该小区发送SSB的异频频点的最大数量M，并配置了相邻的两个频点之间的频率间隔。针对不同的第一频点，其对应的频率间隔可以相同，也可以不同。
本申请可以适用与第一频点为一个场景，当然也可以是适用与第一频点为多个的场景，例如为2个。
网络设备可以根据第一频点，确定出M-1个第二频点，M为大于等于2的整数。例如第一频点为f1时，可以确定出一个第二频点；第一频点为f2时，可以确定出三个不同的第二频点。并且可以在第一频点和M-1个第二频点中挑选出至少两个不同的频点发送SSB。一般情况下，网络设备采用确定出的所有的不同的频点发送SSB，即在第一频点为n2时，采用第一频点和3个第二频点发送SSB。
Figure PCTCN2021073133-appb-000001
表1
综上，所述网络设备可以根据第一频点，确定至少一个第二频点，任一所述第二频点与所述第一频点不同；如果所述第二频点为至少两个时，所述至少两个第二频点也不同；用于发送SSB的所述至少两个不同的频点属于所述第一频点和所述至少一个第二频点组成的频点集合。
另外需要注意的是，异频频点的最大数量M与网络设备的N色复用中的N有关，N为频率复用因子。一般情况下，网络设备会采用所述第一频点和所有的第二频点发送SSB，则第二频点的数量与频率复用因子N有关。M小于或等于N。
如上述表1，网络设备可以预先设定根据第一频点，确定至少一个第二频点的规则。例如，设置异频频点的最大数量M在不同数值时，分别对应的大于第一频点的第二频点的数量，以及小于第一频点的第二频点的数量。
示例的，任一第二频点小于第一频点。当第一频点为f2时，至少一个第二频点可以分别为f2-(i-1)f0，i取值2至(M-1)中的整数，M为大于等于2的整数。
示例的，任一第二频点大于第一频点。当第一频点为n2时，至少一个第二频点可以分别为f2+(i-1)f0，i取值2至(M-1)中的整数，M为大于等于2的整数。
以上介绍了网络设备发送SSB的方式，接下来介绍终端设备接入SSB的方式，具体的过程可以如图6所示。
步骤601：终端设备确定接入网络设备的第一频点。
终端设备中配置了多个小区或者区域分别对应的频点，终端设备可以采用多个频点盲检SSB，将首先接收到SSB的频点称为第一频点，第一频点对应的小区或者区域即为终端设备当前所在的小区或者区域。
步骤602：所述终端设备根据所述第一频点，确定至少一个第二频点。
任一所述第二频点与所述第一频点不同，当所述第二频点为至少两个时，所述至少两个第二频点不同。
终端设备可以根据预先的配置，例如表1所示的配置，根据第一频点，确定至少一个 第二频点。与上述描述的网络设备侧的方式相同，重复之处不再赘述。
步骤603：所述终端设备在一个周期内的一个时间单元内，采用至少两个不同的频点分别接收来自所述网络设备的同步信号块SSB；用于接收SSB的所述至少两个不同的频点属于所述第一频点和所述至少一个第二频点组成的频点集合。
所述终端设备可以在所述第一频点和所述至少一个第二频点中挑选至少两个不同的第二频点接收来自网络设备的SSB。
步骤604：所述终端设备根据接收到的一个或多个不同的所述SSB，接入所述网络设备。
例如可以采用最优的SSB接入所述网络设备。
其中，一个所述周期包括至少两个所述时间单元，一个所述周期内的不同时间单元内分别接收到的所述SSB不同，一个所述时间单元采用不同的频点接收到的所述SSB不同，一个所述时间单元内接收到的不同的所述SSB对应的波束不同。
所述波束不同可以理解为波束的方向不同。所述SSB不可以理解为SS包含的编号不同。
只有终端设备采用的频点与网络设备采用的频点相同，且时间单元相同时，终端设备才可以接收到网络设备发送的SSB。
综上，终端设备先确定接入网络设备的第一频点，再根据所述第一频点确定至少一个第二频点，终端设备在第一频点和第二频点中选择至少两个不同的频点分别接收SSB，也就是终端设备在一个时间单元内可以接收到至少两个SSB。相应的，网络设备在一个时间单元中发送至少两个SSB。如果网络设备侧配置了多个SSB，相比在一个时间单元内发送一个SSB，可以尽快发送完配置的SSB，则终端设备也可以采用较少的时间接收完网络设备配置的SSB。从而，终端设备可以减少接入网络设备的时间。
在另一个实施例中，在极化复用场景下和无极化复用的场景下，异频频点的最大数量M可能不同。例如表2所示，在极化复用场景下，M为2，在无极化复用场景下，M为4。
Figure PCTCN2021073133-appb-000002
表2
在极化复用场景下，即第一频点支持极化复用时，所述终端设备和所述网络设备根据第一频点，可以确定出一个第二频点，确定出的所述第二频点也支持极化复用。
在无极化复用场景下，即第一频点不支持极化复用时，所述终端设备和所述网络设备根据第一频点，可以确定出至少一个、至多三个第二频点，确定出的所述第二频点也不支持极化复用。
另外，所述表2还配置了地面网络(Terrestrial Network，NT)和非地面网络(Non-Terrestrial Network，NTN)，即卫星网络，这两种不同的网络类型。
在地面网络中，网络设备一般采用全频覆盖的方式与终端设备进行通信，则异频频点 的最大数量M为1。
在非地面网络(NTN)，即卫星通信网络中，通常采用多色频率复用的方式来减少卫星波束之间的频率干扰，则异频频点的数量M可以大于等于2。另外当多色复用时，发送SSB的带宽会变小，吞吐性能会降低。当M为2、3、4时，性能最佳。
在另一个实施例中，所述网络设备在一个所述时间单元内，采用所述至少两个不同的频点，可以分别发送一个SSB；也就是一个频点发送一个SSB。
或者，所述网络设备在一个所述时间单元内，采用所述至少两个不同的频点，分别发送两个不同的SSB，也就是一个频点发送两个SSB。其中，在一个所述时间单元，采用一个频点发送的所述两个不同的SSB分别对应的波束通过空间域区分。
跳波束卫星在一个时间单元可以使用波束簇中的多个不同的波束发送SSB，例如，波束簇由4个不同的波束组成，或者由8个不同的波束组成。通常，波束簇中波束的数量等于或者大于异频频点的最大数量M。
例如图7A和图7B所示，跳波束卫星可以同时支持8个波束发送SSB，该卫星的覆盖范围内可以包含32个波束区域，即配置了32个SSB。该卫星采用fc、fc+f0、fc+2*f0和fc+3*f0中4个频点发送SSB。在时间单元T1内，该卫星采用波束0至波束7分别发送SSB0至SSB7。在时间单元T2内，该卫星采用波束8至波束15分别发送SSB8至SSB15。则在一个时间单元内，一个频点可以发送两个不同的SSB，这两个同的SSB各自对应的波束(例如波束0和波束4，或者波束1和波束5，再或者波束2和波束6)可以通过不同的空间域区分。
在现有技术中，不同的SSB对应的波束是不同的。在本申请的另一个实施例中，所述网络设备在相邻的所述时间单元内采用相同的频点发送的不同的所述SSB对应的波束可以相同，也可以不同。
一个区域的终端用户比较少时，覆盖该区域的波束的驻留时间比较短。网络设备在发送SSB时，如果当前发送SSB的波束的驻留时间比较长，则可能会顺延至下一个发送SSB的时间单元，则网络设备在相邻的时间单元内发送的不同的所述SSB对应的波束相同。如果当前发送SSB的波束的驻留时间比较短，则不会顺延至下一个发送SSB的时间单元，则网络设备在相邻的时间单元内发送的不同的所述SSB对应的波束不同。
如图7C所示，编号为16至23的一簇波束在其覆盖的区域内驻留时间较长，例如在时间单元T3和时间单元T4内均驻留在同一区域。则网络设备在时间单元T3和时间单元T4内采用这同一簇波束，即编号为16至23的8个波束向覆盖的区域发送SSB。即网络设备采用编号为16的波束发送SSB16和SSB24，采用编号为17的波束发送SSB17和SSB25，采用编号为18的波束发送SSB18和SSB26，依次类推。
相应的，终端设备在相邻的时间单元内采用相同的频点接收到的不同的SSB对应的波束可能相同，可能不同。所述终端设备还可以确定在相邻的所述时间单元内采用相同的频点接收到的不同的所述SSB对应的波束是否相同。终端设备在确定不同SSB对应的波束相同时，可以将波束相同的SSB进行软合并，提升解调性能，还可以将波束相同的SSB对应的资源合并，提升资源利用率。例如将相同的SSB对应的物理随机接入信道(physical random access channel，PRACH)的接入资源合并。
终端设备确定在相邻的所述时间单元内采用相同的频点接收到的不同的所述SSB对应的波束是否相同时，可以是网络设备可以在SSB中采用第一指示，来指示SSB对应的 波束之间的同异性。即指示相同频点、相同空间域，相邻时间单元的两个SSB是否对应同一波束。终端设备根据第一指示，来确定在相邻的所述时间单元内采用相同的频点接收到的不同的所述SSB对应的波束是否相同。
所述第一指示可以是SSB中原有的保留比特，也可以是对原有的SSB的格式进行更新，在原有的SSB中新增比特位，来承载第一指示。所述第一指示可以占用1bit，也可以占用更多比特。
例如，网络设备发送的每个SSB中包括第一指示，所述第一指示用于指示所述网络设备在第一时间单元内采用第三频点发送的所述SSB对应的波束，与在第二时间单元内采用所述第三频点发送的另一SSB对应的波束是否相同，其中，所述第二时间单元与所述第一时间单元相邻，所述第三频点为所述至少两个不同的频点中的任一个。所述第一时间单元早于所述第二时间单元，或者第一时间单元晚于所述第二时间单元。例如所述第一时间单元为T1，所述第二时间单元为T2。再例如所述第一时间单元为T4，所述第二时间单元为T3。
终端设备可以根据SSB中的第一指示确定终端设备在第一时间单元内采用第三频点接收的所述SSB对应的波束，与在第二时间单元内采用所述第三频点接收到的另一SSB对应的波束是否相同。
如图7C所示，SSB18中可以包括第一指示，第一指示可以用于指示SSB18对应的波束与SSB26对应的波束是否相同，或者指示SSB18与SSB10对应的波束是否相同。SSB18中的第一指示不能指示SSB18与SSB25对应的波束是否相同，因为发送SSB18的频点与发送SSB25的频点不同。
一个波束簇在一个区域可能会驻留达到或超过三个时间单元，在这三个时间单元内，虽然网络设备发送了多个SSB，但是终端设备可能并没有全部接收到。例如图7C所示，一个波束簇驻留三个时间单元，例如T2、T3、T4，则SSB10、SSB18、SSB26对应的波束相同；SSB11、SSB19、SSB27对应的波束相同，……。终端设备在T2时间内接收到SSB10和SSB11，在时间单元T3内，仅接收到SSB19，在时间单元T4内，仅接收到SSB26。SSB19中包括的第一指示在指示SSB19与SSB11对应的波束相同，且SSB26中包括的第一指示在SSB26与SSB18(SSB18实际未接收到)对应的波束相同时，终端设备可以推理出SSB26与SSB10对应的波束相同，可以将波束相同的SSB26和SSB10进行软合并，提升解调性能，以及对应的资源合并，提升资源利用率。
再例如，所述SSB中包括的第一指示可以指示所述网络设备在不同时间单元内采用相同频点发送的不同SSB对应的波束相同。则在一个周期中，任意相邻的两个时间单元内采用相同频点发送的不同SSB对应的波束相同。
上述的第一指示可以是包含在SSB的主***信息块(MasterInformationBlock，MIB)中，MIB information element如下所示：
Figure PCTCN2021073133-appb-000003
Figure PCTCN2021073133-appb-000004
其中，Beam-relation ENUMERATED{0，1}可以表示上述描述的第一指示。
在本申请的另一实施例中，终端设备在接收到SSB时，可能并不是在一个周期的第一个时间单元进行接收的，也就是并不知道这是网络设备发送的第几个SSB，即不知道SSB的编号。基于此所述SSB中可以包括第二指示，所述第二指示用于指示所述网络设备发送的所述SSB的空间域信息和时间单元信息。一般情况下，终端设备在接收到SSB时，是清楚在哪个频点接收到的所述SSB。所述SSB中无需设置比特位来指示SSB的频点信息。当然也可以设置频点信息的比特位。
终端设备清楚这个网络设备配置的SSB的数量，也清楚一个周期内时间单元的数量，并且清楚网络设备发送SSB时的异频频点的数量。基于此，终端设备可以根据该SSB对应的时间单元信息，频点信息、以及空间域信息，得出所述SSB的编号。
也可以理解为所述第二指示用于指示所述SSB的编号，所述SSB的编号通过时间单元信息、频点信息和空间域信息指示。
一个周期包括两个时间单元时，可以通过1bit指示两个不同的时间单元。一个周期内包括3个或4个时间单元时，可以通过2bit来指示不同的时间单元。当一个周期内包括5-8个时间单元时，可以通过3bit来指示不同的时间单元。
同理，1bit可以指示两个不同的空间域，2bit最多可以指示4个不同的空间域，……。
如表3所示，结合图7C，SSB16、SSB20出现在时间单元T3，用10指示时间单元T3；SSB24出现在时间单元T4，用11来指示时间单元T4。SSB16、SSB20的空间域不同，分别通过0和1来指示。在频域上，可根据SSB所在频点隐式指示频域位置，即ssb16对应频点00，ssb17对应频点01；在空域上，可用显示比特指示同时、同频的不同波束(如ssb16和ssb20对应的波束)。
SSB编号 时间单元 空间域 频点(可隐)
SSB16 10 0 00
SSB20 10 1 00
SSB24 11 0 00
…… …… …… ……
表3
前文介绍了本申请实施例的通信的方法，下文中将介绍本申请实施例中的通信的装置。方法、装置是基于同一技术构思的，由于方法、装置解决问题的原理相似，因此装置与方法的实施可以相互参见，重复之处不再赘述。
基于与上述通信方法的同一技术构思，如图8所示，提供了一种通信装置800。通信装置800能够上述方法中由终端设备执行的各个步骤，为了避免重复，此处不再详述。通信装置800可以为网络设备，也可以为应用于网络设备中的芯片。通信装置800包括：收 发模块810、处理模块820，可选的，还包括，存储模块830；处理模块820可以分别与存储模块830和收发模块810相连，所述存储模块830也可以与收发模块810相连：
所述存储模块830，用于存储计算机程序；
示例的，所述处理模块820，用于确定接入网络设备的第一频点；以及根据所述第一频点，确定至少一个第二频点，任一所述第二频点与所述第一频点不同，当所述第二频点为至少两个时，所述至少两个第二频点不同；以及通过收发模块810在一个周期内的一个时间单元内，采用至少两个不同的频点分别接收来自所述网络设备的同步信号块SSB；用于接收SSB的所述至少两个不同的频点属于所述第一频点和所述至少一个第二频点组成的频点集合；
所述处理模块820，还用于根据接收到的一个或多个不同的所述SSB，接入所述网络设备；
其中，一个所述周期包括至少两个所述时间单元，一个所述周期内的不同时间单元内分别接收到的所述SSB不同，一个所述时间单元采用不同的频点接收到的所述SSB不同，一个所述时间单元内接收到的不同的所述SSB对应的波束不同。
在一种可能的实现中，所述处理模块820，还用于确定在相邻的所述时间单元内采用相同的频点接收到的不同的所述SSB对应的波束是否相同。
在一种可能的实现中，所述处理模块820在用于确定在相邻的所述时间单元内采用相同的频点接收到的不同的所述SSB对应的波束是否相同时，具体用于：
接收到的所述SSB中包括第一指示，所述第一指示用于指示所述网络设备在第一时间单元内采用第三频点发送的所述SSB对应的波束，与在第二时间单元内采用所述第三频点发送的SSB对应的波束是否相同，其中，所述第二时间单元与所述第一时间单元相邻，所述第三频点为所述至少两个不同的频点中的任一个；根据所述第一指示，确定在第一时间单元内采用第三频点接收到的所述SSB与在第二时间单元内采用所述第三频点接收到的SSB对应的波束是否相同。
在一种可能的实现中，所述处理模块820在用于根据第一频点，确定至少一个第二频点时，具体用于：根据第一频点，确定一个第二频点，所述第一频点支持极化复用；或者根据第一频点，确定至少一个、至多三个第二频点，所述第一频点不支持极化复用。
在一种可能的实现中，所述处理模块820，在用于通过收发模块810在一个时间单元内，采用至少两个不同的频点分别接收来自所述网络设备的SSB时，具体用于：通过所述收发模块810在一个所述时间单元内，采用所述至少两个不同的频点，分别接收来自所述网络设备的一个SSB；或者，在一个所述时间单元内，采用所述至少两个不同的频点，分别接收来自所述网络设备的两个不同的SSB，其中，在一个所述时间单元，采用一个频点接收到的所述两个不同的SSB分别对应的波束通过空间域区分。
在一种可能的实现中，所述SSB包括第二指示，所述第二指示用于指示所述网络设备发送的所述SSB的空间域信息和时间单元信息。
基于与上述通信方法的同一技术构思，如图9所示，提供了一种通信装置900。通信装置900能够上述方法中由网络设备执行的各个步骤，为了避免重复，此处不再详述。通信装置900可以为网络设备，也可以为应用于网络设备中的芯片。通信装置900包括：收发模块910、处理模块920，可选的，还包括，存储模块930；处理模块920可以分别与存储模块930和收发模块910相连，所述存储模块930也可以与收发模块910相连：
所述存储模块930，用于存储计算机程序；
示例的，所述处理模块920，用于通过收发模块910在一个周期内的一个时间单元内，采用至少两个不同的频点分别发送同步信号块SSB；其中，一个所述周期包括至少两个所述时间单元，一个所述周期内的不同时间单元内分别发送的所述SSB不同，一个所述时间单元采用不同的频点发送的所述SSB不同，一个所述时间单元内发送的不同的所述SSB对应的波束不同。
在一种可能的实现中，所述处理模块920，还用于根据第一频点，确定至少一个第二频点，任一所述第二频点与所述第一频点不同；当所述第二频点为至少两个时，所述至少两个第二频点不同；用于发送SSB的所述至少两个不同的频点属于所述第一频点和所述至少一个第二频点组成的频点集合。
在一种可能的实现中，相邻的所述时间单元内采用相同频点发送的不同的所述SSB对应的波束相同或不同。
在一种可能的实现中，所述SSB包括第一指示，所述第一指示用于指示所述网络设备在第一时间单元内采用第三频点发送的所述SSB对应的波束，与在第二时间单元内采用所述第三频点发送的SSB对应的波束是否相同，其中，所述第二时间单元与所述第一时间单元相邻，所述第三频点为所述至少两个不同的频点中的任一个。
在一种可能的实现中，所述处理模块920在用于根据第一频点，确定至少一个第二频点时，具体用于根据第一频点，确定一个第二频点，所述第一频点支持极化复用；或者根据第一频点，确定至少一个、至多三个第二频点，所述第一频点不支持极化复用。
在一种可能的实现中，所述处理模块920，在用于通过收发模块910在一个时间单元内，采用至少两个不同的频点分别发送SSB时，具体用于：通过所述收发模块910在一个所述时间单元内，采用所述至少两个不同的频点，分别发送一个SSB；或者，在一个所述时间单元内，采用所述至少两个不同的频点，分别发送两个不同的SSB，其中，在一个所述时间单元，采用一个频点发送的所述两个不同的SSB分别对应的波束通过空间域区分。
在一种可能的实现中，所述SSB包括第二指示，所述第二指示用于指示所述网络设备发送的所述SSB的空间域信息和时间单元信息。
图10是本申请实施例的通信装置100的示意性框图。应理解，所述通信装置100能够执行由终端设备执行的各个步骤，为了避免重复，此处不再详述。通信装置100包括：处理器101和存储器103，所述处理器101和所述存储器103之间电偶合；
所述存储器103，用于存储计算机程序指令；
所述处理器101，用于执行所述存储器中的部分或者全部计算机程序指令，当所述部分或者全部计算机程序指令被执行时，所述装置确定至少两个不同的频点，采用至少两个不同的频点接收来自网络设备的SSB。
可选的，还包括：收发器102，用于和其他设备进行通信；例如接收网络设备发送的SSB。
应理解，图10所示的通信装置100可以是芯片或电路。例如可设置在终端设备内的芯片或电路。上述收发器102也可以是通信接口。收发器包括接收器和发送器。进一步地，该通信装置100还可以包括总线***。
其中，处理器101、存储器103、收发器102通过总线***相连，处理器101用于执行该存储器103存储的指令，以控制收发器接收信号和发送信号，完成本申请通信方法中 终端设备的步骤。所述存储器103可以集成在所述处理器101中，也可以与所述处理器101分开设置。
作为一种实现方式，收发器102的功能可以考虑通过收发电路或者收发专用芯片实现。处理器101可以考虑通过专用处理芯片、处理电路、处理器或者通用芯片实现。
图11是本申请实施例的通信装置110的示意性框图。应理解，所述通信装置110能够执行由网络设备执行的各个步骤，为了避免重复，此处不再详述。通信装置110包括：处理器111和存储器113，所述处理器111和所述存储器113之间电偶合；
所述存储器113，用于存储计算机程序指令；
所述处理器111，用于执行所述存储器中的部分或者全部计算机程序指令，当所述部分或者全部计算机程序指令被执行时，所述装置确定至少两个不同的频点，采用至少两个不同的频点向终端设备发送SSB。
可选的，还包括：收发器112，用于和其他设备进行通信；例如向终端设备发送SSB。
应理解，图11所示的通信装置110可以是芯片或电路。例如可设置在网络设备内的芯片或电路。上述收发器112也可以是通信接口。收发器包括接收器和发送器。进一步地，该通信装置110还可以包括总线***。
其中，处理器111、存储器113、收发器112通过总线***相连，处理器111用于执行该存储器113存储的指令，以控制收发器接收信号和发送信号，完成本申请通信方法中网络设备的步骤。所述存储器113可以集成在所述处理器111中，也可以与所述处理器111分开设置。
作为一种实现方式，收发器112的功能可以考虑通过收发电路或者收发专用芯片实现。处理器111可以考虑通过专用处理芯片、处理电路、处理器或者通用芯片实现。
处理器可以是中央处理器(central processing unit，CPU)，网络处理器(network processor，NP)或者CPU和NP的组合。
处理器还可以进一步包括硬件芯片或其他通用处理器。上述硬件芯片可以是专用集成电路(application-specific integrated circuit，ASIC)，可编程逻辑器件(programmable logic device，PLD)或其组合。上述PLD可以是复杂可编程逻辑器件(complex programmable logic device，CPLD)，现场可编程逻辑门阵列(field-programmable gate array，FPGA)，通用阵列逻辑(generic array logic，GAL)及其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等或其任意组合。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
还应理解，本申请实施例中提及的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(Dynamic RAM，DRAM)、同步动态随机存取存储器(Synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM， SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)。应注意，本申请描述的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
本申请实施例提供了一种计算机存储介质，存储有计算机程序，该计算机程序包括用于执行上述通信方法。
本申请实施例提供了一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行上述提供的通信方法。
本领域内的技术人员应明白，本申请的实施例可提供为方法、***、或计算机程序产品。因此，本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本申请可采用在一个或多个其中包括有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本申请是参照根据本申请实施例的方法、设备(***)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
尽管已描述了本申请的优选实施例，但本领域内的技术人员一旦得知了基本创造性概念，则可对这些实施例作出另外的变更和修改。所以，所附权利要求意欲解释为包括优选实施例以及落入本申请范围的所有变更和修改。
显然，本领域的技术人员可以对本申请实施例进行各种改动和变型而不脱离本申请实施例的精神和范围。这样，倘若本申请实施例的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包括这些改动和变型在内。

Claims (43)

  1. 一种通信的方法，其特征在于，所述方法包括：
    终端设备确定接入网络设备的第一频点；
    所述终端设备根据所述第一频点，确定至少一个第二频点，任一所述第二频点与所述第一频点不同，当所述第二频点为至少两个时，所述至少两个第二频点不同；
    所述终端设备在一个周期内的一个时间单元内，采用至少两个不同的频点分别接收来自所述网络设备的同步信号块SSB；用于接收SSB的所述至少两个不同的频点属于所述第一频点和所述至少一个第二频点组成的频点集合；
    所述终端设备根据接收到的一个或多个不同的所述SSB，接入所述网络设备；
    其中，一个所述周期包括至少两个所述时间单元，一个所述周期内的不同时间单元内分别接收到的所述SSB不同，一个所述时间单元采用不同的频点接收到的所述SSB不同，一个所述时间单元内接收到的不同的所述SSB对应的波束不同。
  2. 如权利要求1所述的方法，其特征在于，还包括：
    所述终端设备确定在相邻的所述时间单元内采用相同的频点接收到的不同的所述SSB对应的波束是否相同。
  3. 如权利要求2所述的方法，其特征在于，所述终端设备确定在相邻的所述时间单元内采用相同的频点接收到的不同的所述SSB对应的波束是否相同，包括：
    所述终端设备接收到的所述SSB中包括第一指示，所述第一指示用于指示所述网络设备在第一时间单元内采用第三频点发送的所述SSB对应的波束，与在第二时间单元内采用所述第三频点发送的SSB对应的波束是否相同，其中，所述第二时间单元与所述第一时间单元相邻，所述第三频点为所述至少两个不同的频点中的任一个；
    所述终端设备根据所述第一指示，确定在第一时间单元内采用第三频点接收到的所述SSB与在第二时间单元内采用所述第三频点接收到的SSB对应的波束是否相同。
  4. 如权利要求1-3任一所述的方法，其特征在于，所述终端设备根据第一频点，确定至少一个第二频点，包括：
    所述终端设备根据第一频点，确定一个第二频点，所述第一频点支持极化复用；或者
    所述终端设备根据第一频点，确定至少一个、至多三个第二频点，所述第一频点不支持极化复用。
  5. 如权利要求1-4任一项所述的方法，其特征在于，所述在一个时间单元内，采用至少两个不同的频点分别接收来自所述网络设备的SSB，包括：
    在一个所述时间单元内，采用所述至少两个不同的频点，分别接收来自所述网络设备的一个SSB；或者，
    在一个所述时间单元内，采用所述至少两个不同的频点，分别接收来自所述网络设备的两个不同的SSB，其中，在一个所述时间单元，采用一个频点接收到的所述两个不同的SSB分别对应的波束通过空间域区分。
  6. 如权利要求1-5任一项所述的方法，其特征在于，不同的SSB包含的编号不同。
  7. 如权利要求1-6任一项所述的方法，其特征在于，所述SSB包括第二指示，所述第二指示用于指示所述网络设备发送的所述SSB的空间域信息和时间单元信息。
  8. 如权利要求7所述的方法，其特征在于，所述第二指示还用于指示：所述网络设 备发送的所述SSB的频点信息。
  9. 如权利要求8所述的方法，其特征在于，所述至少两个不同的频点中相邻的频点的频率间隔相同。
  10. 一种通信的方法，其特征在于，所述方法包括：
    网络设备在一个周期内的一个时间单元内，采用至少两个不同的频点分别发送同步信号块SSB；
    其中，一个所述周期包括至少两个所述时间单元，一个所述周期内的不同时间单元内分别发送的所述SSB不同，一个所述时间单元采用不同的频点发送的所述SSB不同，一个所述时间单元内发送的不同的所述SSB对应的波束不同。
  11. 如权利要求10所述的方法，其特征在于，还包括：
    所述网络设备根据第一频点，确定至少一个第二频点，任一所述第二频点与所述第一频点不同；
    当所述第二频点为至少两个时，所述至少两个第二频点不同；
    用于发送SSB的所述至少两个不同的频点属于所述第一频点和所述至少一个第二频点组成的频点集合。
  12. 如权利要求10或11所述的方法，其特征在于，相邻的所述时间单元内采用相同频点发送的不同的所述SSB对应的波束相同或不同。
  13. 如权利要求10-12任一项所述的方法，其特征在于，所述SSB包括第一指示，所述第一指示用于指示所述网络设备在第一时间单元内采用第三频点发送的所述SSB对应的波束，与在第二时间单元内采用所述第三频点发送的SSB对应的波束是否相同，其中，所述第二时间单元与所述第一时间单元相邻，所述第三频点为所述至少两个不同的频点中的任一个。
  14. 如权利要求11-13任一项所述的方法，其特征在于，所述网络设备根据第一频点，确定至少一个第二频点，包括：
    所述网络设备根据第一频点，确定一个第二频点，所述第一频点支持极化复用；或者
    所述网络设备根据第一频点，确定至少一个、至多三个第二频点，所述第一频点不支持极化复用。
  15. 如权利要求10-14任一项所述的方法，其特征在于，所述在一个时间单元内，采用至少两个不同的频点分别发送SSB，包括：
    在一个所述时间单元内，采用所述至少两个不同的频点，分别发送一个SSB；或者，
    在一个所述时间单元内，采用所述至少两个不同的频点，分别发送两个不同的SSB，其中，在一个所述时间单元，采用一个频点发送的所述两个不同的SSB分别对应的波束通过空间域区分。
  16. 如权利要求10-15任一项所述的方法，其特征在于，不同的SSB包含的编号不同。
  17. 如权利要求10-16任一项所述的方法，其特征在于，所述SSB包括第二指示，所述第二指示用于指示所述网络设备发送的所述SSB的空间域信息和时间单元信息。
  18. 如权利要求17所述的方法，其特征在于，所述第二指示还用于指示：所述网络设备发送的所述SSB的频点信息。
  19. 如权利要求18所述的方法，其特征在于，所述至少两个不同的频点中相邻的频点的频率间隔相同。
  20. 一种通信的装置，其特征在于，所述装置包括：
    处理模块，用于确定接入网络设备的第一频点；以及根据所述第一频点，确定至少一个第二频点，任一所述第二频点与所述第一频点不同，当所述第二频点为至少两个时，所述至少两个第二频点不同；以及通过收发模块在一个周期内的一个时间单元内，采用至少两个不同的频点分别接收来自所述网络设备的同步信号块SSB；用于接收SSB的所述至少两个不同的频点属于所述第一频点和所述至少一个第二频点组成的频点集合；
    所述处理模块，还用于根据接收到的一个或多个不同的所述SSB，接入所述网络设备；
    其中，一个所述周期包括至少两个所述时间单元，一个所述周期内的不同时间单元内分别接收到的所述SSB不同，一个所述时间单元采用不同的频点接收到的所述SSB不同，一个所述时间单元内接收到的不同的所述SSB对应的波束不同。
  21. 如权利要求20所述的装置，其特征在于，所述处理模块，还用于确定在相邻的所述时间单元内采用相同的频点接收到的不同的所述SSB对应的波束是否相同。
  22. 如权利要求21所述的装置，其特征在于，所述处理模块在用于确定在相邻的所述时间单元内采用相同的频点接收到的不同的所述SSB对应的波束是否相同时，具体用于：
    接收到的所述SSB中包括第一指示，所述第一指示用于指示所述网络设备在第一时间单元内采用第三频点发送的所述SSB对应的波束，与在第二时间单元内采用所述第三频点发送的SSB对应的波束是否相同，其中，所述第二时间单元与所述第一时间单元相邻，所述第三频点为所述至少两个不同的频点中的任一个；
    根据所述第一指示，确定在第一时间单元内采用第三频点接收到的所述SSB与在第二时间单元内采用所述第三频点接收到的SSB对应的波束是否相同。
  23. 如权利要求20-22任一所述的装置，其特征在于，所述处理模块在用于根据第一频点，确定至少一个第二频点时，具体用于：
    根据第一频点，确定一个第二频点，所述第一频点支持极化复用；或者根据第一频点，确定至少一个、至多三个第二频点，所述第一频点不支持极化复用。
  24. 如权利要求20-23任一项所述的装置，其特征在于，所述处理模块，在用于通过收发模块在一个时间单元内，采用至少两个不同的频点分别接收来自所述网络设备的SSB时，具体用于：
    通过所述收发模块在一个所述时间单元内，采用所述至少两个不同的频点，分别接收来自所述网络设备的一个SSB；或者，在一个所述时间单元内，采用所述至少两个不同的频点，分别接收来自所述网络设备的两个不同的SSB，其中，在一个所述时间单元，采用一个频点接收到的所述两个不同的SSB分别对应的波束通过空间域区分。
  25. 如权利要求20-24任一项所述的方法，其特征在于，不同的SSB包含的编号不同。
  26. 如权利要求20-25任一项所述的装置，其特征在于，所述SSB包括第二指示，所述第二指示用于指示所述网络设备发送的所述SSB的空间域信息和时间单元信息。
  27. 如权利要求26所述的装置，其特征在于，所述第二指示还用于指示：所述网络设备发送的所述SSB的频点信息。
  28. 如权利要求27所述的装置，其特征在于，所述至少两个不同的频点中相邻的频点的频率间隔相同。
  29. 一种通信的装置，其特征在于，所述装置包括：
    处理模块，用于通过收发模块在一个周期内的一个时间单元内，采用至少两个不同的 频点分别发送同步信号块SSB；其中，一个所述周期包括至少两个所述时间单元，一个所述周期内的不同时间单元内分别发送的所述SSB不同，一个所述时间单元采用不同的频点发送的所述SSB不同，一个所述时间单元内发送的不同的所述SSB对应的波束不同。
  30. 如权利要求29所述的装置，其特征在于，所述处理模块，还用于根据第一频点，确定至少一个第二频点，任一所述第二频点与所述第一频点不同；当所述第二频点为至少两个时，所述至少两个第二频点不同；用于发送SSB的所述至少两个不同的频点属于所述第一频点和所述至少一个第二频点组成的频点集合。
  31. 如权利要求29或30所述的装置，其特征在于，相邻的所述时间单元内采用相同频点发送的不同的所述SSB对应的波束相同或不同。
  32. 如权利要求29-31任一项所述的装置，其特征在于，所述SSB包括第一指示，所述第一指示用于指示所述网络设备在第一时间单元内采用第三频点发送的所述SSB对应的波束，与在第二时间单元内采用所述第三频点发送的SSB对应的波束是否相同，其中，所述第二时间单元与所述第一时间单元相邻，所述第三频点为所述至少两个不同的频点中的任一个。
  33. 如权利要求30-32任一项所述的装置，其特征在于，所述处理模块在用于根据第一频点，确定至少一个第二频点时，具体用于根据第一频点，确定一个第二频点，所述第一频点支持极化复用；或者根据第一频点，确定至少一个、至多三个第二频点，所述第一频点不支持极化复用。
  34. 如权利要求29-33任一项所述的装置，其特征在于，所述处理模块，在用于通过收发模块在一个时间单元内，采用至少两个不同的频点分别发送SSB时，具体用于：
    通过所述收发模块在一个所述时间单元内，采用所述至少两个不同的频点，分别发送一个SSB；或者，在一个所述时间单元内，采用所述至少两个不同的频点，分别发送两个不同的SSB，其中，在一个所述时间单元，采用一个频点发送的所述两个不同的SSB分别对应的波束通过空间域区分。
  35. 如权利要求29-34任一项所述的装置，其特征在于，不同的SSB包含的编号不同。
  36. 如权利要求29-35任一项所述的装置，其特征在于，所述SSB包括第二指示，所述第二指示用于指示所述网络设备发送的所述SSB的空间域信息和时间单元信息。
  37. 如权利要求36所述的装置，其特征在于，所述第二指示还用于指示：所述网络设备发送的所述SSB的频点信息。
  38. 如权利要求37所述的装置，其特征在于，所述至少两个不同的频点中相邻的频点的频率间隔相同。
  39. 一种通信装置，其特征在于，所述装置包括：处理器和存储器，所述处理器、所述存储器之间电偶合；
    所述存储器，用于存储计算机程序指令；
    所述处理器，用于执行所述存储器中的部分或者全部计算机程序指令，当所述部分或者全部计算机程序指令被执行时，以实现如权利要求1至9中任一项所述的通信方法，或者10-19中任一项所述的通信方法。
  40. 如权利要求39所述的通信装置，其特征在于，还包括：
    收发器，用于发送所述处理器处理后的信号，或者接收信号输入给所述处理器。
  41. 一种计算机可读存储介质，其特征在于，所述计算机存储介质中存储有计算机可 读指令，当计算机读取并执行所述计算机可读指令时，使得计算机执行如权利要求1-9任一项所述方法或权利要求10-19任一项所述方法。
  42. 一种通信***，其特征在于，所述***包括：执行上述如权利要求1-9任一项所述方法的终端设备、以及执行上述权利要求10-19任一项所述方法网络设备。
  43. 一种计算机程序产品，其特征在于，所述计算机程序产品包括：计算机程序代码，当所述计算机程序代码在计算机上运行时，使得计算机执行如权利要求1-9任一项所述方法或权利要求10-19任一项所述方法。
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