WO2018228542A1 - 通信方法和装置 - Google Patents

通信方法和装置 Download PDF

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Publication number
WO2018228542A1
WO2018228542A1 PCT/CN2018/091540 CN2018091540W WO2018228542A1 WO 2018228542 A1 WO2018228542 A1 WO 2018228542A1 CN 2018091540 W CN2018091540 W CN 2018091540W WO 2018228542 A1 WO2018228542 A1 WO 2018228542A1
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WIPO (PCT)
Prior art keywords
beams
signal strength
information
identification information
random access
Prior art date
Application number
PCT/CN2018/091540
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English (en)
French (fr)
Inventor
严乐
曾清海
张宏平
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to JP2019569698A priority Critical patent/JP7131873B2/ja
Priority to EP18818198.6A priority patent/EP3624492B1/en
Priority to KR1020207001470A priority patent/KR102308293B1/ko
Priority to AU2018286289A priority patent/AU2018286289B2/en
Publication of WO2018228542A1 publication Critical patent/WO2018228542A1/zh
Priority to US16/536,003 priority patent/US10785805B2/en
Priority to US16/989,256 priority patent/US20200374938A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0072—Transmission or use of information for re-establishing the radio link of resource information of target access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • 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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0058—Transmission of hand-off measurement information, e.g. measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0077—Transmission or use of information for re-establishing the radio link of access information of target access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085—Hand-off measurements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/06—Reselecting a communication resource in the serving access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H04W36/085—Reselecting an access point involving beams of access points
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/302—Reselection being triggered by specific parameters by measured or perceived connection quality data due to low signal strength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/00837—Determination of triggering parameters for hand-off
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085—Hand-off measurements
    • H04W36/0094—Definition of hand-off measurement parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0866—Non-scheduled access, e.g. ALOHA using a dedicated channel for access

Definitions

  • the embodiments of the present application relate to the field of communications technologies, and in particular, to a communication method and apparatus.
  • Mobile communication not only pursues the maximization of capacity, but also requires a wider coverage, that is, wireless network signal coverage regardless of where the terminal moves.
  • the terminal moves from the serving cell to another cell, in order to ensure the continuity of the service of the terminal, the terminal needs to switch from the current serving cell to another cell.
  • the handover procedure of the serving cell of the terminal in the LTE system is as follows: the source eNB (SeNB) decides to switch the serving cell of the terminal according to the measurement report reported by the terminal, and initiates handover to the target eNB (TeNB). After the SeNB acquires the handover request acknowledgement message of the TeNB, the SeNB sends a handover message to the terminal, and the terminal initiates a random access procedure to obtain the TA value and the uplink resource according to the identifier of the target cell carried in the handover message. A handover complete message is sent to the target base station on the uplink resource.
  • the source eNB decides to switch the serving cell of the terminal according to the measurement report reported by the terminal, and initiates handover to the target eNB (TeNB).
  • the SeNB After the SeNB acquires the handover request acknowledgement message of the TeNB, the SeNB sends a handover message to the terminal, and the terminal initiates a random access procedure to obtain the TA value and the uplink
  • the high frequency cell uses beamforming technology to communicate, that is, each high frequency cell has multiple different beams for use. Communication.
  • the terminal performs handover how to select the beam access by the terminal is an urgent problem to be solved.
  • the embodiment of the present application provides a communication method and apparatus for providing a reasonable beam access scheme.
  • the embodiment of the present application provides a communication method, including: receiving identifier information of N beams of a target cell and a random access channel configuration of M beams in the N beams, where N and M are a positive integer; according to the signal quality or signal strength of the L beams in the N beams, the identification information of the N beams and the random access channel configuration of the M beams determine an access beam, where L is non Negative integer.
  • the identification information of the N beams and the random access channel configuration of the M beams determine an access beam according to signal strengths of L beams in the N beams
  • the method includes: determining, according to signal strengths of the L beams in the N beams, intensity threshold information, identification information of the N beams, and a random access channel configuration of the M beams.
  • the method further includes receiving the intensity threshold information.
  • the intensity threshold information includes: a first beam signal strength threshold or an intensity threshold indication information, where the intensity threshold indication information is used to indicate the first beam signal strength threshold and the second beam signal strength The threshold relationship, the second beam signal strength threshold is a beam signal strength threshold carried in the measurement configuration information.
  • the determining, according to the signal strengths of the L beams of the N beams, the intensity threshold information, the identification information of the N beams, and the random access channel configuration of the M beams includes: according to signal strengths of L beams in the N beams, intensity threshold information, identification information of the N beams, and random access channel configurations of the M beams, from the M A beam in the beam that determines that the signal strength is greater than or equal to the first beam signal strength threshold is a beam of the access target cell. Therefore, the terminal determines that the beam of the access target cell has a random access channel configuration and the signal strength is high, so the success rate of the terminal accessing the target cell is higher.
  • the determining, according to the signal strengths of the L beams of the N beams, the intensity threshold information, the identification information of the N beams, and the random access channel configuration of the M beams includes: when the signal strengths of the M beams are all smaller than the first beam signal strength threshold, according to the identification information of the N beams and the random access channel configuration of the M beams, A beam of the access target cell is determined among the M beams. Therefore, the beam of the access target cell determined by the terminal has a random access channel configuration, so the success rate of the terminal accessing the target cell is high.
  • the determining, according to the signal strengths of the L beams of the N beams, the intensity threshold information, the identification information of the N beams, and the random access channel configuration of the M beams includes: when the signal strengths of the M beams are smaller than the first beam signal strength threshold, according to the identifiers of the N beams, the signal strengths of the L beams, and the intensity threshold information, A beam in the L beams that determines that the signal strength is greater than or equal to the first beam signal strength threshold is a beam of the access target cell. Therefore, the terminal determines that the beam of the access target cell belongs to the L beams, and therefore the success rate of the terminal accessing the target cell is high.
  • the determining, according to the signal strengths of the L beams of the N beams, the intensity threshold information, the identification information of the N beams, and the random access channel configuration of the M beams includes: according to signal strengths of the L beams, intensity threshold information, identification information of the N beams, priority order of the N beams, and random access channel configuration of the M beams Determine the beam accessing the target cell.
  • the identification information of the N beams and the random access channel configuration of the M beams determine an access beam according to signal strengths of L beams in the N beams
  • the method includes: determining, according to the identification information of the N beams, the beam with the strongest signal strength among the L beams as the beam of the access target cell, when the M beam is not searched. Therefore, the signal that the terminal determines to access the beam of the target cell is the strongest among the L beams, so the success rate of the terminal accessing the target cell is high.
  • the identification information of the N beams includes: synchronization signal block identification information and/or channel state information reference signal identification information; wherein the signal according to L beams in the N beams The strength, the identification information of the N beams, and the random access channel configuration of the M beams determine an access beam, including:
  • the intensity threshold information, the identification information of the N beams, and the identifier information is the channel state information reference signal identification information
  • the priority of the beam is higher than the identification information is the synchronization signal block.
  • the method further includes: determining that the first searched beam is an access beam, or determining that the beam with the strongest signal strength is an access beam, or The searched beam is determined to be an access beam, or the beam with the highest priority among the searched beams is determined to be an access beam. Therefore, the manner in which the terminal determines to access the beam of the target cell is flexible.
  • the random access channel configuration includes a preamble index and a time-frequency resource configuration.
  • an embodiment of the present application provides a communication method, including:
  • the first network device receives the identification information of the N beams of the target cell and the random access channel configuration of the M beams of the N beams, where N and M are positive integers;
  • the first network device sends the identification information of the N beams and the random access channel configuration of the M beams to the terminal.
  • the method further includes:
  • the first network device sends the service beam change information to the second network device, where the service beam change information is used by the second network device to determine a validity period of a random access channel configuration of the M beams.
  • the method further includes:
  • the random access channel configuration includes a preamble index and a time-frequency resource configuration.
  • the method further includes: the first network device sending, by using a handover message, strength threshold information or quality threshold information of the beam signal to the terminal.
  • an embodiment of the present application provides a communication method, including:
  • the second network device sends, to the first network device, identification information of N beams of the target cell and a random access channel configuration of M beams of the N beams, where N and M are positive integers.
  • the method further includes: the second network device receiving service beam change information of the terminal sent by the first network device in a predetermined time period; the second network device determining, according to the service beam change information, The validity period of the random access channel configuration of the M beams; when the validity period expires, the second network device releases the random access channel configuration of the M beams.
  • the method further includes: receiving, by the second network device, a validity period of a random access channel configuration of the M beams sent by the first network device; when the validity period expires, the second network device Release the random access channel configuration of the M beams.
  • the method further includes: sending, by the second network device, strength threshold information or quality threshold information of the beam signal to the terminal by using system information.
  • an embodiment of the present application provides a communications apparatus, including:
  • a receiving module configured to receive identification information of N beams of the target cell and a random access channel configuration of M beams of the N beams, where N and M are positive integers;
  • a processing module configured to determine, according to signal quality or signal strength of the L beams of the N beams, the identification information of the N beams and the random access channel configuration of the M beams to determine an access beam, where L Is a non-negative integer.
  • the processing module is specifically configured to: according to signal strengths of the L beams in the N beams, intensity threshold information, identification information of the N beams, and the M beams.
  • the random access channel configuration determines the beam to access.
  • the receiving module is further configured to receive the intensity threshold information.
  • the intensity threshold information includes: a first beam signal strength threshold or an intensity threshold indication information, where the intensity threshold indication information is used to indicate the first beam signal strength threshold and the second beam signal strength The threshold relationship, the second beam signal strength threshold is a beam signal strength threshold carried in the measurement configuration information.
  • the processing module is specifically configured to: according to signal strengths of the L beams in the N beams, intensity threshold information, identification information of the N beams, and the M beams
  • the random access channel is configured to determine, from the M beams, a beam whose signal strength is greater than or equal to the first beam signal strength threshold is a beam of the access target cell.
  • the processing module is specifically configured to: when the signal strengths of the M beams are smaller than the first beam signal strength threshold, according to the identifier information of the N beams and the A random access channel configuration of the M beams, and a beam of the access target cell is determined from the M beams.
  • the processing module is specifically configured to: when the signal strengths of the M beams are smaller than the first beam signal strength threshold, according to the identifiers of the N beams, the L Signal strength and intensity threshold information of the beams, and a beam from the L beams that determines that the signal strength is greater than or equal to the first beam signal strength threshold is a beam of the access target cell.
  • the processing module is specifically configured to: according to signal strengths of the L beams, intensity threshold information, identification information of the N beams, priority order of the N beams, and A random access channel configuration of the M beams determines a beam of the access target cell.
  • the processing module is configured to determine, according to the identification information of the N beams, the signals in the L beams when the M beams are not searched.
  • the strongest beam is the beam that accesses the target cell.
  • the identification information of the N beams includes: synchronization signal block identification information and/or channel state information reference signal identification information;
  • the processing module is specifically configured to: according to signal strengths, intensity threshold information, and identification information of the N beams of the N beams, the identification information is a priority of a beam of the channel state information reference signal identification information The beam is higher than the beam whose identification information is the synchronization signal block identification information, and the random access channel configuration of the M beams determines the access beam.
  • the processing module is further configured to: if any one of the N beams is not searched; or if the signal strength of the L or M beams is less than the first a beam signal strength threshold, or if any of the M beams is not searched, determining that the first searched beam is an access beam, or determining that the signal with the strongest signal strength is an access beam Or, randomly determining the searched beam as the accessed beam, or determining that the beam with the highest priority among the searched beams is the accessed beam.
  • the random access channel configuration includes a preamble index and a time-frequency resource configuration.
  • the communication device of the fourth aspect may be a terminal or a chip inside the terminal.
  • an embodiment of the present application provides a communications apparatus, including:
  • a receiving module configured to receive identification information of N beams of a target cell and a random access channel configuration of M beams of the N beams, where N and M are positive integers;
  • a sending module configured to send, to the terminal, the identifier information of the N beams and the random access channel configuration of the M beams.
  • the receiving module is further configured to receive service beam change information of the terminal sent by the terminal within a predetermined time period
  • the sending module is further configured to send the service beam change information to the second network device, where the service beam change information is used by the second network device to determine a random access channel configuration of the M beams. Validity period.
  • the method further includes: a processing module;
  • the receiving module is further configured to receive service beam change information that is sent by the terminal in a predetermined time period
  • the processing module is configured to determine, according to the service beam change information, an expiration date of a random access channel configuration of the M beams;
  • the sending module is further configured to send, to the second network device, a validity of a random access channel configuration of the M beams.
  • the random access channel configuration includes a preamble index and a time-frequency resource configuration.
  • the sending module is further configured to send, by using a handover message, strength threshold information or quality threshold information of the beam signal to the terminal.
  • the communication device of the fifth aspect may be a network device or a chip inside the network device.
  • an embodiment of the present application provides a communications apparatus, including:
  • a sending module configured to send, to the first network device, identifier information of N beams of the target cell and a random access channel configuration of M beams of the N beams, where N and M are positive integers.
  • the network device further includes: a receiving module and a processing module;
  • the receiving module is configured to receive service beam change information of the terminal sent by the first network device within a predetermined time period
  • the processing module is configured to determine, according to the service beam change information, an expiration date of the random access channel configuration of the M beams; after the validity period expires, release the random access channel configuration of the M beams.
  • the network device further includes: a receiving module and a processing module.
  • the receiving module is configured to receive a validity period of a random access channel configuration of the M beams sent by the first network device;
  • the processing module is configured to release a random access channel configuration of the M beams after the validity period expires.
  • the sending module is further configured to send, by using system information, strength threshold information or quality threshold information of the beam signal to the terminal.
  • the communication device of the sixth aspect may be a network device or a chip inside the network device.
  • the embodiment of the present application provides a terminal, including: a processor and a transceiver, where the processor and the transceiver are used to perform the communication method according to any one of the embodiments of the present application.
  • the embodiment of the present application provides a network device, including: a processor and a transceiver, where the processor and the transceiver are used to perform the communication method according to any one of the embodiments of the present application.
  • the embodiment of the present application provides a network device, including: a processor and a transceiver; the processor and the transceiver are used to perform the communication method according to any one of the embodiments of the present application.
  • the embodiment of the present application provides a computer readable storage medium, when the instructions in the storage medium are executed by a processor of the communication device, to enable the communication device to perform the communication method described in the first aspect of the present application.
  • the embodiment of the present application provides a computer readable storage medium, when the instructions in the storage medium are executed by a processor of the communication device, enabling the communication device to perform the communication method according to the second aspect of the present application. .
  • the embodiment of the present application provides a computer readable storage medium, when the instructions in the storage medium are executed by a processor of the communication device, enabling the communication device to perform the communication method described in the third aspect of the present application. .
  • An embodiment of the present application provides a communication method and apparatus, which receives, by a terminal, identification information of N beams and a random access channel configuration of M beams among N beams, and then the terminal determines signal quality of L beams according to N beams. Or the signal strength, the identification information of the N beams, and the random access channel configuration of the M beams determine the access beam, which provides a reasonable solution for determining the access beam. Further, since the beam accessed by the embodiment is determined by the terminal according to the signal quality or signal strength of the L beams in the N beams and the random access channel configuration of the received M beams, the thus determined The access beam can improve the success rate of terminal access.
  • FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present application.
  • Embodiment 3 is a flowchart of a communication method provided by Embodiment 2 of the present application.
  • FIG. 5 is a schematic structural diagram of a communication apparatus according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of a terminal according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a communication apparatus according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of a network device according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of a communication apparatus according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic structural diagram of a network device according to an embodiment of the present disclosure.
  • FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present application.
  • the communication system includes at least two network devices and at least one terminal, and at least two network devices and the at least one terminal are implemented by the following applications.
  • the technical solution provided by the example communicates.
  • two network devices are shown in FIG. 1, which are a first network device and a second network device respectively, and one terminal is shown in FIG.
  • a network device also known as a radio access network (RAN) device, is a device that accesses a terminal to a wireless network, and may be an evolved base station in Long Term Evolution (LTE) (Evolutional Node B, eNB or eNodeB), or a relay station or an access point, or a base station in a 5G network, such as a Transmission and Reception Point (TRP), a controller, is not limited herein.
  • a wireless terminal can refer to a device with wireless transceiver function, which can be deployed on land, including indoor or outdoor, handheld or on-board. It can also be deployed on the water (such as a ship). Etc); can also be deployed in the air (such as airplanes, balloons, satellites, etc.).
  • the terminal may be a mobile phone, a tablet, a computer with wireless transceiver function, a virtual reality (VR) terminal, an augmented reality (AR) terminal, and an industrial control.
  • the English of the beam can be written as a beam.
  • the beam may include a transmit beam and a receive beam.
  • the transmit beam may refer to a distribution of signal strength formed in different directions of the space after the signal is transmitted through the antenna
  • the receive beam may refer to a signal intensity distribution of the wireless signal received from the antenna in different directions in space.
  • one or more antenna ports of one beam can also be regarded as one antenna port set, that is, one antenna port set includes at least one antenna port.
  • the beam may refer to a precoding vector having a certain energy transmission directivity and can identify the precoding vector by using identifier information, where the energy transmission directivity refers to receiving the precoding vector in a certain spatial position.
  • the pre-coded signal has better receiving power, such as satisfying the reception demodulation signal-to-noise ratio, etc., and in other spatial locations, the signal received by the pre-coding vector for pre-coding processing has lower power and is not satisfied. Receive demodulation signal to noise ratio.
  • Different communication devices may have different precoding vectors, ie corresponding to different beams.
  • one communication device may use one or more of a plurality of different precoding vectors at the same time, ie simultaneously
  • One beam or multiple beams can be formed.
  • the beam can be understood as a spatial resource.
  • the beam may be identified by the identifier information.
  • the identifier information may be corresponding to the corresponding resource identifier (identity, ID) of the user.
  • the identifier information may correspond to the configured channel state information reference signal (Channel status).
  • CSI-RS information reference signal
  • SRS uplink sounding reference signal
  • the identifier information may also be identifier information that is displayed or implicitly carried by a beam-bearing signal or channel.
  • the identifier information includes, but is not limited to, a synchronization signal sent by a beam or a broadcast channel indicating the The identification information of the beam, including but not limited to the synchronization signal block (SS block) sent by the beam, indicates the identification information of the beam, where the SS block includes at least a primary synchronization signal (PSS) and/or a secondary synchronization signal ( SSS) and/or broadcast channel (PBCH).
  • PSS primary synchronization signal
  • SSS secondary synchronization signal
  • PBCH broadcast channel
  • the first network device is used as the source base station
  • the second network device is the target base station as an example.
  • FIG. 2 is a flowchart of a communication method according to Embodiment 1 of the present application. As shown in FIG. 2, the method in this embodiment may include:
  • the target base station sends, to the source base station, the identifier information of the N beams of the target cell and the random access channel (RACH) configuration of the M beams of the N beams.
  • RACH random access channel
  • the target base station performs admission control, allowing the terminal to switch from the serving cell to the target cell, and then the target base station sends the N-beam identification information of the target cell to the source base station and the RACH configuration of the M beams in the N beams.
  • the RACH configuration may be corresponding to the SS block or may correspond to the CSI-RS. Wherein, N and M are positive integers. Further, the target base station may also send the cell identifier of the target cell to the source base station.
  • the target base station may receive the handover request message sent by the source base station sent by the source base station, but the embodiment is not limited thereto.
  • the identification information of the N beams and the RACH configuration of the M beams may be included in the same message or different messages sent by the target base station to the source base station.
  • the target base station may send the identification information of the N beams and the RACH configuration of the M beams to the source base station at the same time or at different times.
  • the identification information of the N beams and the RACH configuration of the M beams may be included in a handover request acknowledgement message sent by the target base station to the source base station.
  • the source base station sends, to the terminal, identifier information of N beams of the target cell and RACH configurations of M beams of the N beams.
  • the source base station after receiving the identification information of the N beams and the RACH configurations of the M beams in the N beams, the source base station sends the identification information of the N beams and the M of the N beams to the terminal. RACH configuration of the beam.
  • the identification information of the N beams and the RACH configuration of the M beams may be included in the same message or different messages sent by the source base station to the terminal.
  • the source base station may send the identification information of the N beams and the RACH configuration of the M beams to the terminal at the same time or at different times.
  • the identification information of the N beams and the RACH configuration of the M beams of the N beams may be included in a handover message sent by the source base station to the terminal.
  • the handover message may be a Radio Resource Control (RRC) connection reconfiguration message carrying a mobility control information (UE), or other message, such as another RRC different from the RRC connection reconfiguration message.
  • RRC Radio Resource Control
  • UE mobility control information
  • Message or layer 1 signaling, or layer 2 signaling.
  • the terminal determines the accessed beam according to at least the signal quality or signal strength of the L beams in the N beams, the identification information of the N beams, and the RACH configuration of the M beams.
  • the terminal determines the access beam according to the signal quality or signal strength of the L beams, the identification information of the N beams, and the RACH configuration of the M beams. After determining the accessed beam, the terminal uses the beam to access the target cell to which the beam belongs.
  • the terminal performs measurement on the searched at least one beam to obtain the signal quality or strength of the beam
  • the searched beam is not limited to the N beams of the target cell, that is, the target cell can also be searched. Beam. It is also not limited to measure each of the N beams to be measured.
  • L here can also be regarded as the number of beams whose signal quality or signal strength is detected.
  • the M beams may or may not overlap with the L beams, which is not limited in this embodiment of the present application.
  • the signal quality of the beam may be the first signal receiving quality of the beam, and the signal strength of the beam may be the first signal receiving power of the beam, where the first signal includes: a synchronization signal and/or a reference signal.
  • the source base station sends the identifier information of the N beams and the RACH configuration of the M beams in the N beams to the terminal, and then the terminal according to the signal quality or signal strength of the L beams in the N beams, the N beams.
  • the identification information and the RACH configuration of the M beams determine the access beam. Therefore, this embodiment provides a reasonable solution for determining the access beam. Further, since the beam accessed by the embodiment is determined by the terminal according to the signal quality or signal strength of the L beams in the N beams and the RACH configuration of the received M beams, the thus determined access is determined.
  • the beam can improve the success rate of the terminal accessing the cell and improve the handover success rate.
  • the signal strength of the beam is taken as an example to describe how to determine the access beam.
  • the scheme of the signal quality is similar to the scheme of the signal strength, and is not described in this embodiment.
  • FIG. 3 is a flowchart of a communication method according to Embodiment 2 of the present application. As shown in FIG. 3, the method in this embodiment may include:
  • the terminal sends a measurement report to the source base station.
  • the terminal before receiving the measurement report to the source base station, the terminal receives the measurement configuration information sent by the source base station, and performs measurement on the serving cell and the neighboring area according to the configuration information.
  • the configuration information is used to configure the terminal to measure the beam of the serving cell and the neighboring cell, where the configuration information includes but is not limited to the number of beams K and the beam signal strength threshold, which is simply referred to as X, and the terminal according to the signal The signal strength of the K beams whose intensity is greater than or equal to X determines the signal strength of the serving cell and the neighboring cell.
  • the terminal sends a measurement report, and the measurement report includes : signal strength of at least one neighboring cell, and/or signal strength of K beams under each neighboring cell, and identification information of the serving cell and the at least one neighboring cell, and the identification information of the serving cell and the at least one neighboring cell includes the cell ID Or cell index.
  • the measurement report may further include: optionally, the measurement report may further include: identifier information of K beams used to generate signal strength of each neighboring cell, or used to generate signal strength of each neighboring cell Signal strength of K beams.
  • the foregoing neighboring cell includes the target cell described in the embodiment shown in FIG. 2.
  • the configuration information may also not carry the number of beams and the beam signal strength threshold information.
  • the terminal measures the signal strength of the cell.
  • the SS block and the CSI-RS are reference signals, which are transmitted on the beam; the foregoing measurement configuration information is specifically used to configure the terminal to measure the SS block and/or the CSI-RS transmitted through the beam, and accordingly, the beam
  • the signal strength includes: the signal strength of the SS block of the beam and/or the signal strength of the CSI-RS.
  • the number of beams obtained by measuring the SS block and the number of beams obtained by measuring the CSI-RS may be the same or different.
  • the beam signal strength threshold corresponding to the measurement configuration may include: an SS block beam signal strength threshold and/or a CSI-RS beam signal strength threshold, that is, X includes X1 and X2, where X1 corresponds to an SS block beam signal strength threshold, X2 Corresponding to the CSI-RS beam signal strength threshold, where X1 and X2 may or may not be equal.
  • the identifier information of the beam in this embodiment may be SS block identification information transmitted through the beam and/or CSI-RS identification information transmitted through the beam.
  • the SS block is transmitted on the wide beam, and the beam may be identified by the SS block identification information.
  • the SS block identification information may be a time index indication (implicit or display) carried by the PBCH in the SS block. .
  • the CSI-RS is transmitted on a narrow beam, and the beam may be identified by CSI-RS identification information.
  • the CSI-RS identification information may be an identifier of a CSI-RS configuration, and the CSI-RS configuration includes at least a resource configuration, and a CSI-RS configuration. It may also include an antenna port or the like for transmitting a CSI-RS.
  • the measurement report may include information of at least one beam carrying the neighboring cell (the information of the beam may be the signal strength of the beam, and/or the identification information of the beam), and the information of the at least one beam may be listed.
  • the form is included in the measurement report, for example, the beams under each neighboring area are arranged according to the strength of the signal.
  • the information of at least one beam may be used by the target base station to determine a beam (ie, M beams) configured with an RACH configuration.
  • the terminal may report the information of the beams in the neighboring area in the measurement report.
  • the following two manners may exist, but the embodiment is not limited thereto.
  • the CSI-RS resource is measured, the CSI-RS resource is configured by the source base station in the measurement configuration message to the terminal, and if the C configuration information is configured in the CSI-RS resource, the terminal reports the information.
  • the information of the beam corresponding to the C CSI-RS resources that is, the information of the beam corresponding to each CSI-RS resource in the W CSI-RS resources.
  • the measurement configuration message received by the terminal includes a threshold value, where the threshold value Q is not equal to the X, and the threshold value is used by the terminal to determine whether the information of a certain beam needs to be reported. That is, if the signal strength of the beam of the neighboring cell measured by the terminal is higher than (or not lower than) the threshold, the terminal reports the information of the beam in the measurement report.
  • the terminal reports information of a maximum of P beams according to the value P, or may also report the highest signal quality or the signal strength higher than Q according to the foregoing threshold value Q.
  • the information of the P beams; the maximum value P that the value P can be set in advance may also be included in the measurement configuration message sent by the source base station to the terminal.
  • the source base station sends a handover request message to the target base station.
  • the source base station receives the measurement report sent by the terminal, and makes a handover decision according to the measurement report, and may use the neighboring area with the strongest signal strength among the multiple neighboring areas reported as the target cell to the target to which the target cell belongs.
  • the base station sends a handover request message, which may include an identifier of the target cell.
  • the handover request message may further include information about at least one beam under the target cell (including signal strength of the beam and/or identification information of the beam).
  • the source base station may send a handover request message to multiple neighboring cells based on the signal strength of the multiple neighboring cells in the measurement report, so as to ensure that the target base station does not allow the terminal to switch to the target cell, and other neighboring cells belong to The base station can allow the terminal to switch to other neighboring cells according to the handover request message.
  • the source base station may not be limited to send a handover request message to the target base station according to the measurement report sent by the terminal.
  • the source base station also sends a handover request message to the target base station according to the current network state.
  • handover request message is an example, and the corresponding handover preparation interaction may be completed by other messages, and the type of the message may be referred to as a first message.
  • the target base station sends a handover request acknowledgement message to the source base station.
  • the target base station sends a handover request acknowledgement message to the source base station according to the handover request message, where the handover request acknowledgement message includes: identifier information of N beams of the target cell and M of the N beams. RACH configuration of the beam.
  • the foregoing handover request acknowledgement message is an example, or the corresponding handover preparation interaction is completed by other messages, and the type of the message may be referred to as a second message, and the second message is an acknowledgement message to the first message. .
  • the source base station sends a handover message to the terminal.
  • the source base station after receiving the handover request acknowledgement message, the source base station sends a handover message to the terminal, where the handover message includes: identifier information of N beams of the target cell and RACH configuration of the M beams.
  • switching message is an example, and the corresponding switching instruction may be completed by other messages, and the type of the message may be referred to as a third message.
  • the identification information of the N beams may be sent by using a list.
  • the identification information of the N beams may also be sent by other forms, and the embodiment is not limited thereto.
  • the corresponding priority information may also be carried, and the priority information may have different notification manners, as follows:
  • the identification information of the N beams is sent in the form of a list, and the list has a priority order, that is, the order of the beams in the list is bound to the priority, for example, the identification information of the first beam in the list.
  • the priority of the beam is the highest, and the priorities of the beams are sequentially arranged in the order of priority.
  • the identification information of the two beams is taken as an example. If the list is ⁇ beam 2 identification information, beam 1 identification information ⁇ , the beam is 2 has a higher priority than beam 1;
  • the identification information of the N beams is sent in the form of a list, and the priority information of the beam is also used in the list, and the priority information is used to indicate the priority of the beam.
  • the two beams are sent in the form of a list.
  • the terminal determines, according to signal strengths of the L beams in the N beams, strength threshold information, identification information of the N beams, and RACH configuration of the M beams.
  • the strength threshold information may be pre-defined or received by the terminal.
  • the beam of the access target cell is determined according to the signal quality, the corresponding quality threshold information is used.
  • the terminal may receive the strength threshold information sent by the source base station.
  • the strength threshold information includes a handover message sent by the source base station to the terminal.
  • the strength threshold information is included in the handover message, or the minimum system information. (minimum SI) optionally carried in the handover message, the intensity threshold information is included in the minimum system information (minimum SI) in the handover message.
  • the strength threshold information may be determined by the source base station, or the strength threshold information may also be sent by the source base station to the target base station. For example, the strength threshold information is included in the handover request acknowledgement message sent by the target base station to the source base station.
  • the terminal may receive the strength threshold information sent by the target base station, for example, the strength threshold information includes system information (SI) broadcast by the target base station through the target cell.
  • SI system information
  • the SI may include minimum system information (minimum SI) and other system information (other SI) than the minimum system information, which may be included in the minimum SI of the SI, or included in the OSI.
  • the strength threshold information includes: a first beam signal strength threshold and/or an intensity threshold indication information, where the intensity threshold indication information is used to indicate a relationship between the first beam signal strength threshold and the second beam signal strength threshold; the second beam signal
  • the strength threshold is a beam signal strength threshold carried in the measurement configuration message, that is, X mentioned above.
  • the terminal after receiving the handover message, determines the first beam signal strength threshold according to the intensity threshold information, and uses the signal strengths of the L beams and the first beam signal strength among the N beams according to the identification information of the N beams.
  • the thresholds are compared, and the beam of the access target cell is determined based on the RACH configuration of the M beams of the N beams.
  • the intensity threshold indication information may indicate a relationship between X and Y, such as indicating whether X and Y are equal, and the intensity threshold indication information may be a binary bit value, such as "0" indicating unequal, "1" indicating equality, and vice versa.
  • the intensity threshold indication information is a Boolean value, 'TURUE' means equal, and 'FALSE' means unequal, and vice versa.
  • the strength threshold indication information is a cell, and when the cell is carried, it indicates that the information is not equal, and when it is not carried, it indicates that it is equal, and vice versa.
  • the intensity threshold information may not carry the Y value, and the terminal interprets the “X and Y equal” indicated in the intensity threshold indication information, and is used to determine the access target according to the X value.
  • the beam of the cell if the X and the Y are not equal, the strength threshold information carries a Y value.
  • the intensity threshold information may not be carried in the strength threshold information.
  • the strength threshold indication information may be: SS block strength threshold indication information and CSI - RS strength threshold indication information.
  • the first beam signal strength threshold (Y) is a first SS block beam signal strength threshold (Y1) and a first CSI-RS beam signal strength threshold (Y2).
  • the strength threshold information further includes first indication information, where the first indication information is used to indicate a relationship between Y1 and Y2, such as whether Y1 and Y2 are equal, and the first indication information may be a binary bit value, such as “0”. "It means not equal, "1" means equal, and vice versa.
  • the first indication information is a Boolean value, 'TURUE' means equal, and 'FALSE' means unequal, and vice versa.
  • the first indication information is a cell, and when the cell is carried, it indicates that the information is not equal, and when it is not carried, it indicates that the information is equal, and vice versa.
  • the intensity threshold information may have a threshold value, that is, Y, where Y1 and Y2 are both Y. Since the intensity threshold information carries a threshold Y, the terminal interprets that the first indication information indicates “Y1 is equal to Y2”, and uses the Y value (corresponding to the signal strength of the SS block transmitted through the beam, and also corresponds to the beam transmission through the beam transmission). The signal strength of the CSI-RS is used to determine the beam of the access target cell. If Y1 and Y2 are not equal, the intensity threshold information carries two values, namely Y1 and Y2, and the terminal uses Y1 and Y2 to determine the beam of the access target cell, respectively.
  • the foregoing S205 may be specifically: the terminal may determine, according to the RACH configuration of the M beams in the received N beams, that the M beams are configured with the RACH configuration (ie, each beam is configured with The RACH configuration corresponding to the beam); the terminal can obtain the signal strengths of the L beams in the N beams, and compare the signal strengths of the L beams with the first beam signal strength threshold, and determine the accessed beam accordingly.
  • the beam is configured with an RACH configuration
  • the signal strength of the beam is greater than or equal to the first beam signal strength threshold
  • the terminal sets at least one beam of the M beams with a signal strength greater than or equal to the first beam signal strength threshold as a beam of the access target cell. That is, if the terminal determines that the beam is configured with the RACH configuration, and the signal strength of the beam is greater than or equal to the first beam signal strength threshold, the terminal determines that the beam is the beam of the access target cell.
  • the beam of the access target cell determined in this implementation manner belongs to N beams and belongs to the above M beams.
  • the identifier information of the N beams includes: SS block identifier information and/or CSI-RS identifier information, and therefore, the beam that includes both the SS block identifier information identifier and the CSI-RS identifier information identifier in the N beams
  • the priority of the beam identified by the CSI-RS identification information is higher than the beam identified by the SS block identification information, and the terminal preferentially determines that the RACH configuration is configured, and the signal strength is greater than the first beam signal strength threshold, and the CSI-RS identifier
  • the beam identified by the information is the beam of the access target cell.
  • the terminal determines that the beam configuration has the RACH configuration, and The signal strength is greater than the first beam signal strength threshold, and the beam identified by the SS block identification information is a beam of the access target cell.
  • the terminal may determine the beam that meets the foregoing condition and the first searched beam is the beam of the access target cell, or The terminal may randomly select a beam that accesses the target cell from the beam that meets the above conditions, or the terminal may select a beam with the strongest signal strength from the beam that meets the above conditions as the beam of the access target cell, or the terminal may satisfy The beam with the highest priority is selected as the beam of the access target cell, and the priority order of the beam can be referred to the related description above.
  • the priority sequence of the beam identified by the CSI-RS identifier information and the identifier of the SS block identifier information may be predefined or configured by the network device, for example, by using a handover message to indicate the priority sequence. .
  • the RACH configuration of each of the M beams includes: a preamble index and a time-frequency resource configuration, and the RACH configuration may be regarded as a Contention Free Random Access (CFRA) configuration.
  • CFRA Contention Free Random Access
  • the terminal determines that the beam of the access target cell has the RACH configuration and the signal strength is high, so the success rate of the terminal accessing the target cell is higher.
  • the beam of the access target cell is determined from the M beams.
  • the terminal searches for N beams, and obtains signal strengths of the M beams.
  • the signal strengths of the M beams are smaller than the first beam signal strength threshold, determining the access target cell from the M beams. Beam.
  • the beam of the access target cell determined in this embodiment belongs to the above M beams.
  • the terminal may use the first one of the M beams to be the beam of the access target cell, and the terminal may randomly select the beam of the target cell from the M beams, or the terminal may obtain the M from the M.
  • the beam with the strongest signal strength is selected as the beam of the access target cell, or the terminal can select the beam with the highest priority from the M beams as the beam of the access target cell, wherein the priority order of the beam can be seen.
  • the identifier information of the N beams includes: SS block identifier information and/or CSI-RS identifier information, and therefore, the beam that includes both the SS block identifier information identifier and the CSI-RS identifier information identifier in the N beams
  • the priority of the beam identified by the CSI-RS identification information is higher than the beam identified by the SS block identification information, and the terminal preferentially determines the access target cell in the beam identified by the CSI-RS identification information in the M beams. Beam. If the M beams do not include the beam identified by the CSI identification information, the terminal determines the beam of the access target cell in the beam identified by the SS block identification information in the M beams.
  • determining a beam of the access target cell in the beam identified by the CSI-RS identification information or determining a beam of the access target cell in the beam identified by the SS block identification information in the M beams and the second type In a feasible implementation, the manner of determining the beam of the access target cell among the M beams is similar.
  • the beam of the access target cell determined by the terminal has a RACH configuration, so the success rate of the terminal accessing the target cell is high.
  • the signal strengths of the M beams are smaller than the first beam signal strength threshold, and the L beams have a beam whose signal strength is greater than or equal to the first beam signal strength threshold.
  • the terminal uses a beam whose signal strength is greater than or equal to the first beam signal strength threshold as a beam of the access target cell according to the identifiers of the N beams, the signal strengths of the L beams, and the intensity threshold information, where the signal strength is greater than or A beam equal to the first beam signal strength threshold can be understood as one of the L beams. That is, the terminal searches for N beams to obtain signal strengths of L beams. When the signal strengths of the M beams are smaller than the first beam signal strength threshold, the terminal according to the signal strength threshold of the beam of the access target cell A beam greater than or equal to the first beam signal strength threshold, and a beam of the access target cell is determined from the L beams.
  • the terminal may use the signal strength to be greater than or equal to the first beam signal strength threshold and the first searched beam is the access target cell. Beam.
  • the terminal may randomly select a beam that accesses the target cell from a beam whose signal strength is greater than or equal to the first beam signal strength threshold, or the terminal may select a signal strength from a beam whose signal strength is greater than or equal to the first beam signal strength threshold.
  • the strongest beam is the beam of the access target cell, or the terminal can select the beam with the highest priority from the beam whose signal strength is greater than or equal to the first beam signal strength threshold as the beam of the access target cell, wherein the beam priority
  • the order of the levels can be found in the related description above.
  • the identifier information of the N beams includes: SS block identifier information and/or CSI-RS identifier information, and therefore, the beam that includes both the SS block identifier information identifier and the CSI-RS identifier information identifier in the N beams
  • the priority of the beam identified by the CSI-RS identification information is higher than the beam identified by the SS block identification information, and the terminal preferentially determines that the signal strength is greater than or equal to the first beam signal strength threshold, and the CSI-RS identification information is identified by the CSI-RS identification information.
  • the beam is a beam that accesses the target cell.
  • the terminal determines that the signal strength is greater than or equal to the first beam signal strength threshold, and the beam identified by the SS block identification information is connected. The beam into the target cell.
  • the terminal may monitor and parse system information of the target cell, and initiate random access to the target cell according to the common RACH configuration in the system information. .
  • the terminal determines that the signal strength of the beam of the access target cell is high, so the success rate of the terminal accessing the target cell is high.
  • the signal strengths of the M beams are smaller than the first beam signal strength threshold, and there are no beams in the L beams whose signal strength is greater than or equal to the first beam signal strength threshold.
  • the terminal determines, according to the identifiers of the N beams and the signal strengths of the L beams, the beam with the strongest signal strength from the L beams as the beam of the access target cell. or,
  • the terminal may use the first one of the L beams to be the beam of the access target cell. or,
  • the terminal can randomly select a beam accessing the target cell from the L beams. or,
  • the terminal can select the beam with the highest priority from the L beams as the beam of the access target cell, and the priority order of the beam can be referred to the related description above.
  • the beam of the access target cell determined in this embodiment belongs to the L beams, but the beam of the access target cell determined at this time may belong to the M beams or may not belong to the M beams.
  • the identifier information of the N beams includes: SS block identifier information and/or CSI-RS identifier information, and therefore, the beam that includes both the SS block identifier information identifier and the CSI-RS identifier information identifier in the N beams
  • the priority of the beam identified by the CSI-RS identification information is higher than the beam identified by the SS block identification information, and the terminal preferentially determines the signal strength of the beam identified by the CSI-RS identification information in the L beams.
  • the beam is a beam that accesses the target cell.
  • the terminal determines that the beam with the strongest signal strength among the beams identified by the SS block identification information in the L beams is the beam of the access target cell. It can be understood that the method for determining the beam of the access target cell in the beam identified by the CSI-RS identification information or the beam identified by the SS block identification information may also be determining the first searched beam as the access target. The beam of the cell, or randomly selected, or the beam with the highest priority is not limited in this embodiment.
  • the manner in which the terminal determines to access the beam of the target cell is flexible.
  • the beam of the access target cell may be determined as follows: the terminal searches for L beams of the N beams, and the terminal may determine a beam of the access target cell from the L beams, for example, the L beams. The strongest beam in the medium signal strength is determined to be the beam accessing the target cell, or the terminal determines the first one of the L beams to be the beam of the access target cell, or the terminal prioritizes the L beams.
  • any one of the M beams is not searched, or M is equal to 0, or none of the N beams are searched, or L or M beams are The signal strength is smaller than the first beam signal quality threshold, or M is equal to 0.
  • the access beam may be determined by using one of the following methods. :
  • the terminal searches for the beam with the strongest signal strength in the beam of the target cell as the beam of the access target cell, or the terminal determines the beam of the first searched target cell as the beam of the access target cell. Alternatively, the terminal determines the beam with the highest priority among the beams of the target cell that is searched as the beam of the access target cell, or the terminal randomly determines the beam of the access target cell from the beam of the target cell. In this way, the terminal is preferentially accessed to the target cell, so that access failure can be avoided as much as possible.
  • the terminal determines that the beam with the strongest signal strength among the searched beams is the accessed beam. Alternatively, the terminal determines the first searched beam as the accessed beam, and at this time, the beam may belong to the target cell. Alternatively, the terminal determines the beam with the highest priority among the searched beams as the beam of the access neighboring cell. Alternatively, the terminal randomly determines the access beam, which may belong to the target cell. The accessed beam may belong to the target cell, or the accessed beam may belong to a neighboring cell outside the target cell.
  • the terminal initiates an RRC connection re-establishment process.
  • the terminal performs an RRC connection re-establishment process in the current serving cell.
  • the terminal determines the beam by the foregoing manner, the random access procedure is initiated, but the random access procedure fails, for example, the number of times the terminal sends the preamble index reaches the maximum number of transmissions, but the terminal However, the terminal has failed to receive the random access response (RAR) message replied by the base station, and the terminal initiates an RRC connection re-establishment process.
  • the terminal performs an RRC connection re-establishment process in the current serving cell.
  • a plurality of methods for determining an access beam are provided, which may enable the terminal to flexibly select an access beam.
  • FIG. 4 is a flowchart of a communication method according to Embodiment 3 of the present application. As shown in FIG. 4, the method in this embodiment may include:
  • the terminal sends a measurement report to the source base station, where the measurement report includes service beam change information of the terminal within a predetermined time period.
  • the measurement report in this embodiment further includes: service beam change information of the terminal in a predetermined time period.
  • the service beam change information is, for example, information such as the number of service beams that the terminal changes during a predetermined time period, and the length of time that the terminal stays in each service beam.
  • the beam transform information is not limited to be included in the measurement report, and may also be included in a new RRC message sent by the terminal to the source base station or in layer 1 signaling or layer 2 signaling.
  • the source base station sends a handover request message to the target base station, where the handover request message includes the service beam change information.
  • the handover request message in this embodiment refer to the related description in the embodiment shown in FIG. 3.
  • the handover request message in this embodiment further includes: the service beam change information.
  • the target base station determines, according to the service beam change information, an expiration date of the RACH configurations of the M beams.
  • the target base station can generally determine the mobile state of the terminal according to the service beam transform information, and determine the validity period of the RACH configuration of the M beams based on the mobile state of the terminal, if the terminal is frequently determined according to the service beam transform information.
  • the RACH configuration allocated by the target base station to the M beams has a shorter validity period.
  • the RACH configuration allocated by the target base station to the M beams has a longer validity period.
  • the source base station determines an expiration date according to the service beam change information; the source base station sends a handover request message to the target base station, where the handover request message includes an expiration date.
  • the target base station determines, according to the handover request message, the validity period of the RACH configuration in which the validity period of the handover request message is M beams.
  • the target base station releases the RACH configuration of the M beams, thereby avoiding waste of resources for a long time.
  • the S301-S303 in this embodiment is not limited to the scenario or the solution applied to the embodiment.
  • the S301-S303 in this embodiment is not limited to the scenario or the solution applied to the embodiment.
  • the target base station sends a handover request acknowledgement message to the source base station.
  • the handover request acknowledgement message includes the identification information of the N beams and the RACH configuration of the M beams.
  • the handover request message in this embodiment refer to the related description in the embodiment shown in FIG. 3.
  • the execution order of S303 and S304 is in no particular order.
  • the source base station sends a handover message to the terminal, where the handover message includes the identifier information of the N beams of the target cell and the RACH configuration of the M beams.
  • the terminal determines the accessed beam according to at least the signal strengths of the L beams in the N beams, the identification information of the N beams, and the RACH configuration of the M beams.
  • the terminal sends a preamble index to the base station corresponding to the beam according to the accessed beam.
  • the base station corresponding to the beam may be a target base station or another base station.
  • the base station corresponding to the beam is shown as an example in FIG. 4 as an example, but the embodiment is not limited thereto.
  • the base station corresponding to the beam sends a random access response (RAR) message to the terminal.
  • RAR random access response
  • the terminal determines that the beam of the access target cell belongs to the M beams, the beam configuration of the access target cell has an RACH configuration. Therefore, the terminal sends the preamble index to the target base station by using the RACH configuration.
  • the target base station determines, according to the preamble index sent by the terminal and/or the time-frequency resource used for transmitting the preamble index, the selected beam that the terminal randomly selects to the target cell, and the target terminal sends the RAR message to the terminal according to the beam, and The target base station releases the RACH configuration of the other beams in the M beams.
  • the terminal determines that the beam of the access target cell does not belong to the M beams, the beam of the access target cell is not configured with the RACH configuration. Therefore, the terminal sends the random access to the target base station on the common random access channel time-frequency resource. The index of the selected preamble.
  • the terminal sends an RRC connection reconfiguration complete message to the base station corresponding to the beam.
  • the terminal After receiving the RAR message, the terminal sends an RRC connection reconfiguration complete message to the base station corresponding to the beam.
  • the terminal determines the beam of the access target cell according to the foregoing solution, and according to the beam, the success rate of the terminal accessing the target cell can be improved, and the handover success rate is improved.
  • the terminal also reports the service beam change information of the terminal, so that the target base station determines the validity period of the RACH configuration of the M beams, and releases the RACH configuration of the M beams after the validity period expires, thereby avoiding long-term occupation of resources and improving resources. Utilization rate.
  • the method or the step implemented by the terminal may also be implemented by a chip inside the terminal.
  • the method or step implemented by a base station such as a source base station, may also be implemented by a chip inside the base station.
  • An embodiment of the present application provides a communication device, which may be a terminal or a chip inside the terminal.
  • the communication device in this embodiment may include: a receiving module 11 and a processing module 12.
  • the receiving module 11 is configured to receive identification information of N beams of the target cell and a random access channel configuration of M beams of the N beams, where N and M are positive integers.
  • the processing module 12 is configured to determine, according to signal quality or signal strength of the L beams of the N beams, the identification information of the N beams and the random access channel configuration of the M beams to determine an access beam, where L is a non-negative integer.
  • the processing module 12 is specifically configured to: according to signal strengths, intensity threshold information, identification information of the N beams, and random access channels of the M beams, of the L beams of the N beams. Configure to determine the beam to access.
  • the receiving module 11 is further configured to receive the strength threshold information.
  • the strength threshold information includes: a first beam signal strength threshold or an intensity threshold indication information, where the intensity threshold indication information is used to indicate a relationship between the first beam signal strength threshold and a second beam signal strength threshold,
  • the second beam signal strength threshold is a beam signal strength threshold carried in the measurement configuration information.
  • the processing module 12 is configured to: according to signal strengths, intensity threshold information, identification information of the N beams, and random access of the M beams, according to L beams of the N beams. a channel configuration, wherein a beam from which the signal strength is greater than or equal to the first beam signal strength threshold is determined from the M beams as a beam of the access target cell.
  • the processing module 12 is configured to: when the signal strengths of the M beams are smaller than the first beam signal strength threshold, according to the identifier information of the N beams and the M beams
  • the random access channel configuration determines a beam of the access target cell from the M beams.
  • the processing module 12 is specifically configured to: when the signal strengths of the M beams are smaller than the first beam signal strength threshold, according to the identifiers of the N beams, the L beams The signal strength and the intensity threshold information are used to determine, from the L beams, a beam whose signal strength is greater than or equal to the first beam signal strength threshold is a beam of the access target cell.
  • the processing module 12 is specifically configured to: according to signal strengths of the L beams, strength threshold information, identification information of the N beams, priority order of the N beams, and the M The random access channel configuration of the beams determines the beam of the access target cell.
  • the processing module 12 is configured to determine, according to the identifier information of the N beams, that the signal strength of the L beams is strongest when no one of the M beams is searched.
  • the beam is the beam that accesses the target cell.
  • the identifier information of the N beams includes: synchronization signal block identification information and/or channel state information reference signal identification information;
  • the processing module 12 is specifically configured to: according to signal strengths, intensity threshold information, and identification information of the N beams of the N beams, and the identifier information is a beam of channel state information reference signal identification information.
  • the beam with the priority higher than the identification information being the synchronization signal block identification information and the random access channel configuration of the M beams determines the access beam.
  • the processing module 12 is further configured to: if any one of the N beams is not searched; or if the signal strength of the L or M beams is less than the first beam signal strength Threshold, or, if any of the M beams is not searched, determining that the first searched beam is the accessed beam, or determining that the beam with the strongest signal strength is the accessed beam, or The searched beam is randomly determined to be the accessed beam, or the beam with the highest priority among the searched beams is determined to be the accessed beam.
  • the random access channel configuration includes a preamble index and a time-frequency resource configuration.
  • the communication device described above in this embodiment may be used to perform the technical solution of the terminal/terminal chip execution in the foregoing method embodiments, and the implementation principle and the technical effect are similar.
  • the function of each module may refer to the corresponding method in the method embodiment. Description, no longer repeat here.
  • FIG. 6 is a schematic structural diagram of a terminal according to an embodiment of the present disclosure.
  • the terminal in this embodiment may include: a processor 21 and a transceiver 22.
  • the processor 21 is communicatively coupled to the transceiver 22.
  • the above receiving module 11 may be the transceiver 22 in this embodiment.
  • the transceiver 22 includes a transmitter and a receiver, and the above receiving module 11 can be a receiver in the transceiver 22.
  • the above processing module 12 can be embedded in the hardware 21 or in the processor 21 of the terminal.
  • the transceiver 22 may include a necessary radio frequency communication device such as a mixer.
  • the processor 21 may include a central processing unit (CPU), a digital signal processor (DSP), a microcontroller (Microcontroller Unit (MCU), and an application specific integrated circuit (ASIC). Or at least one of a Field-Programmable Gate Array (FPGA).
  • CPU central processing unit
  • DSP digital signal processor
  • MCU microcontroller
  • ASIC application specific integrated circuit
  • FPGA Field-Programmable Gate Array
  • the terminal in this embodiment may further include a memory 23 for storing program instructions, and the processor 21 is configured to invoke program instructions in the memory 23 to execute the foregoing solution.
  • the program instructions may be implemented in the form of a software functional unit and can be sold or used as a standalone product, which may be any form of computer readable storage medium. Based on such understanding, all or part of the technical solution of the present application may be embodied in the form of a software product, including a plurality of instructions for causing a computer device, specifically the processor 21, to execute the terminal in each embodiment of the present application. All or part of the steps.
  • the foregoing computer readable storage medium includes: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. The medium of the code.
  • the terminal described in this embodiment may be used to implement the technical solution of the terminal or its internal chip in the foregoing method embodiments of the present application, and the implementation principle and the technical effect are similar.
  • the function of each module may refer to the corresponding method embodiment. The description is not repeated here.
  • An embodiment of the present application provides a communication device, which may be a network device or a chip inside a network device. As shown in FIG. 7, the receiving module 31 and the sending module 32 may be included.
  • the receiving module 31 is configured to receive, by the second network device, identifier information of N beams of the target cell and a random access channel configuration of M beams of the N beams, where N and M are positive integers;
  • the sending module 32 is configured to send the identifier information of the N beams and the random access channel configuration of the M beams to the terminal.
  • the receiving module 31 is further configured to receive service beam change information that is sent by the terminal in a predetermined time period;
  • the sending module 32 is further configured to send the service beam change information to the second network device, where the service beam change information is used by the second network device to determine a random access channel configuration of the M beams. Validity period.
  • the communication device of this embodiment further includes: a processing module 33.
  • the receiving module 31 is further configured to receive service beam change information that is sent by the terminal in a predetermined time period;
  • the processing module 33 is configured to determine, according to the service beam change information, an expiration date of a random access channel configuration of the M beams;
  • the sending module 32 is further configured to send, to the second network device, a validity of a random access channel configuration of the M beams.
  • the random access channel configuration includes a preamble index and a time-frequency resource configuration.
  • the sending module 32 is further configured to send, by using a handover message, strength threshold information or quality threshold information of the beam signal to the terminal.
  • the communication device described in this embodiment may be used to perform the technical solution of the source base station or its internal chip in the foregoing method embodiments, and the implementation principle and the technical effect are similar.
  • the function of each module may refer to the method embodiment. The corresponding description will not be repeated here.
  • FIG. 8 is a schematic structural diagram of a network device according to an embodiment of the present disclosure.
  • the network device in this embodiment may include: a processor 41 and a transceiver 42.
  • the processor 41 is communicatively coupled to the transceiver 42.
  • the above receiving module 31 and transmitting module 32 may be the transceiver 42 in this embodiment.
  • the transceiver 42 includes a transmitter and a receiver, and the above receiving module 31 can be a receiver in the transceiver 22, and the above transmitting module 32 can be a transmitter in the transceiver 42.
  • the above processing module 33 can be embedded in or independent of the processor 41 of the network device in hardware.
  • the transceiver 42 may include a necessary radio frequency communication device such as a mixer.
  • the processor 41 may include at least one of a CPU, a DSP, an MCU, an ASIC, or an FPGA.
  • the network device of this embodiment may further include a memory 43 for storing program instructions, and the processor 41 is configured to invoke program instructions in the memory 43 to execute the foregoing solution.
  • the program instructions may be implemented in the form of a software functional unit and can be sold or used as a standalone product, which may be any form of computer readable storage medium. Based on such understanding, all or part of the technical solution of the present application may be embodied in the form of a software product, including a plurality of instructions for causing a computer device, specifically a processor 41, to perform the network in various embodiments of the present application. All or part of the steps of the device.
  • the aforementioned computer readable storage medium includes: a U disk, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk, and the like, which can store program codes.
  • the network device described in this embodiment may be used to implement the technical solution of the source base station in the foregoing method embodiments of the present application.
  • the implementation principle and technical effects are similar, and details are not described herein again.
  • An embodiment of the present application provides a communication device, which may be a network device or a chip inside the network device.
  • the communication module 51 may include: a sending module 51.
  • the sending module 51 is configured to send, to the first network device, identifier information of N beams of the target cell and a random access channel configuration of M beams of the N beams, where N and M are positive integers.
  • the communication device further includes: a receiving module 52 and a processing module 53.
  • the receiving module 52 is configured to receive service beam change information of a terminal sent by the first network device within a predetermined time period.
  • the processing module 53 is configured to determine, according to the service beam change information, a validity period of the random access channel configuration of the M beams; after the validity period expires, release the random access channel configuration of the M beams .
  • the receiving module 52 is configured to receive a validity period of a random access channel configuration of the M beams sent by the first network device.
  • the processing module 53 is configured to release the random access channel configuration of the M beams after the validity period expires.
  • the sending module 51 is further configured to send, by using system information, strength threshold information or quality threshold information of the beam signal to the terminal.
  • the communication device described in this embodiment may be used to perform the technical solution of the target base station or its internal chip in the foregoing method embodiments, and the implementation principle and the technical effect are similar.
  • the function of each module may refer to the method embodiment. The corresponding description will not be repeated here.
  • FIG. 10 is a schematic structural diagram of a network device according to an embodiment of the present disclosure.
  • the network device in this embodiment may include: a processor 61 and a transceiver 62.
  • the processor 61 is communicatively coupled to the transceiver 62.
  • the above receiving module 52 and the transmitting module 51 may be the transceiver 62 in this embodiment.
  • the transceiver 62 includes a transmitter and a receiver, and the above receiving module 52 may be a receiver in the transceiver 62, and the above transmitting module 51 may be a transmitter in the transceiver 62.
  • the above processing module 53 can be embedded in or independent of the processor 61 of the network device in hardware.
  • the transceiver 62 can include a necessary radio frequency communication device such as a mixer.
  • the processor 61 may include at least one of a CPU, a DSP, an MCU, an ASIC, or an FPGA.
  • the network device of this embodiment may further include a memory 63 for storing program instructions, and the processor 61 is configured to invoke program instructions in the memory 63 to execute the foregoing solution.
  • the program instructions may be implemented in the form of a software functional unit and can be sold or used as a standalone product, which may be any form of computer readable storage medium. Based on such understanding, all or part of the technical solution of the present application may be embodied in the form of a software product, including a plurality of instructions for causing a computer device, specifically a processor 61, to perform the network in various embodiments of the present application. All or part of the steps of the device.
  • the aforementioned computer readable storage medium includes: a U disk, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk, and the like, which can store program codes.
  • the network device described in this embodiment may be used to implement the technical solution of the target base station in the foregoing method embodiments of the present application.
  • the implementation principle and technical effects are similar, and details are not described herein again.
  • the division of the module in the embodiment of the present application is schematic, and is only a logical function division, and the actual implementation may have another division manner.
  • the functional modules in the embodiments of the present application may be integrated into one processing module, or each module may exist physically separately, or two or more modules may be integrated into one module.
  • the above integrated modules can be implemented in the form of hardware or in the form of software functional modules.
  • the integrated modules if implemented in the form of software functional modules and sold or used as separate products, may be stored in a computer readable storage medium.
  • a computer readable storage medium A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) or a processor to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .
  • the computer program product includes one or more computer instructions.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transfer to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL), or wireless (eg, infrared, wireless, microwave, etc.).
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
  • the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)).

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Abstract

本申请实施例提供一种通信方法和装置，此方法包括：接收目标小区的N个波束的标识信息以及所述N个波束中的M个波束的随机接入信道配置，其中，N和M为正整数；根据所述N个波束中L个波束的信号质量或者信号强度，所述N个波束的标识信息以及所述M个波束的随机接入信道配置确定接入的波束，其中L为非负整数，因此，本实施例提供了一种合理的确定接入波束的方案。进一步地，由于本实施例接入的波束是终端根据N个波束中L个波束的信号质量或者信号强度，以及接收到的M个波束的RACH配置确定的，因此，由此确定的接入的波束可以提高终端接入小区的成功率。

Description

通信方法和装置
本申请要求于2017年06月16日提交中国专利局、申请号为201710459115.0、申请名称为“通信方法和装置”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
本申请实施例涉及通信技术领域，尤其涉及一种通信方法和装置。
背景技术
移动通信不仅追求容量的最大化，而且需要更广阔的覆盖范围，即无论终端移动到哪里，都要有无线网络信号覆盖。当终端由服务小区朝另一小区的方向移动时，为了保证终端的业务的连续性，该终端需要从当前的服务小区切换至另一小区。
目前，LTE系统中终端的服务小区的切换过程如下所述：源基站(Source eNB，SeNB)根据终端上报的测量报告决定对终端的服务小区进行切换，向目标基站(Target eNB,TeNB)发起切换请求，在SeNB获取到TeNB的切换请求确认消息后，SeNB向终端发送切换消息，终端根据切换消息中携带的目标小区的标识，向目标基站发起随机接入过程以获取到TA值以及上行资源，在该上行资源上向目标基站发送切换完成消息。
但是目前的5G系统中引入高频技术。数据通过高频进行传输的时候，一般传输的路损较大，为了保证业务的有效传输，高频小区会采用波束赋形技术来通信，即每个高频小区具有多个不同的波束用于通信。在终端进行切换时，终端如何选择波束接入是急需解决的问题。
发明内容
本申请实施例提供一种通信方法和装置，用于提供一种合理的波束接入方案。
第一方面，本申请实施例提供一种通信方法，包括：接收目标小区的N个波束的标识信息以及所述N个波束中的M个波束的随机接入信道配置，其中，N和M为正整数；根据所述N个波束中L个波束的信号质量或者信号强度，所述N个波束的标识信息以及所述M个波束的随机接入信道配置确定接入的波束，其中L为非负整数。
在一种可能的设计中，所述根据所述N个波束中L个波束的信号强度，所述N个波束的标识信息以及所述M个波束的随机接入信道配置确定接入的波束，包括：根据所述N个波束中L个波束的信号强度，强度阈值信息，所述N个波束的标识信息以及所述M个波束的随机接入信道配置确定接入的波束。
在一种可能的设计中，所述方法还包括：接收所述强度阈值信息。
在一种可能的设计中，所述强度阈值信息包括：第一波束信号强度阈值或者强度阈值 指示信息，所述强度阈值指示信息用于指示所述第一波束信号强度阈值与第二波束信号强度阈值的关系，所述第二波束信号强度阈值是与测量配置信息中携带的波束信号强度阈值。
在一种可能的设计中，所述根据所述N个波束中L个波束的信号强度，强度阈值信息，所述N个波束的标识信息以及所述M个波束的随机接入信道配置确定接入的波束，包括：根据所述N个波束中L个波束的信号强度，强度阈值信息，所述N个波束的标识信息以及所述M个波束的随机接入信道配置，从所述M个波束中确定信号强度大于或等于所述第一波束信号强度阈值的波束为接入目标小区的波束。因此，终端确定接入目标小区的波束具有随机接入信道配置且信号强度高，因此终端接入该目标小区的成功率更高。
在一种可能的设计中，所述根据所述N个波束中L个波束的信号强度，强度阈值信息，所述N个波束的标识信息以及所述M个波束的随机接入信道配置确定接入的波束，包括：在所述M个波束的信号强度均小于所述第一波束信号强度阈值时，根据所述N个波束的标识信息和所述M个波束的随机接入信道配置，从所述M个波束中确定接入目标小区的波束。因此，终端确定的接入目标小区的波束具有随机接入信道配置，因此终端接入该目标小区的成功率高。
在一种可能的设计中，所述根据所述N个波束中L个波束的信号强度，强度阈值信息，所述N个波束的标识信息以及所述M个波束的随机接入信道配置确定接入的波束，包括：在所述M个波束的信号强度均小于所述第一波束信号强度阈值时，根据所述N个波束的标识、所述L个波束的信号强度、强度阈值信息，从所述L个波束中确定信号强度大于或等于所述第一波束信号强度阈值的波束为接入目标小区的波束。因此，终端确定接入目标小区的波束属于L个波束，因此终端接入该目标小区的成功率高。
在一种可能的设计中，所述根据所述N个波束中L个波束的信号强度，强度阈值信息，所述N个波束的标识信息以及所述M个波束的随机接入信道配置确定接入的波束，包括：根据所述L个波束的信号强度，强度阈值信息，所述N个波束的标识信息，所述N个波束的优先级顺序以及所述M个波束的随机接入信道配置，确定接入目标小区的波束。
在一种可能的设计中，所述根据所述N个波束中L个波束的信号强度，所述N个波束的标识信息以及所述M个波束的随机接入信道配置确定接入的波束，包括：在未搜索到所述M个波束中任一波束时，根据所述N个波束的标识信息，确定所述L个波束中信号强度最强的波束为接入目标小区的波束。因此，终端确定接入目标小区的波束的信号为L个波束中最强的，因此终端接入该目标小区的成功率高。
在一种可能的设计中，所述N个波束的标识信息包括：同步信号块标识信息和/或信道状态信息参考信号标识信息；其中，所述根据所述N个波束中L个波束的信号强度，所述N个波束的标识信息以及所述M个波束的随机接入信道配置确定接入的波束，包括：
根据所述N个波束中L个波束的信号强度，强度阈值信息，所述N个波束的标识信息，标识信息为信道状态信息参考信号标识信息的波束的优先级高于标识信息为同步信号块标识信息的波束，以及所述M个波束的随机接入信道配置，确定接入的波束。
在一种可能的设计中，若未搜索到所述N个波束中的任一波束；或者，若所述L或者M个波束的信号强度小于所述第一波束信号强度阈值，或者，若未搜索到所述M个波束中的任一波束，所述方法还包括：确定最先搜索到的波束为接入的波束，或者，确定信号强度最强的波束为接入的波束，或者，随机确定搜索到的波束为接入的波束，或者，确定 搜索到的波束中优先级最高的波束为接入的波束。因此，终端确定接入目标小区的波束的方式较为灵活。
在一种可能的设计中，所述随机接入信道配置包括前导码索引和时频资源配置。
第二方面，本申请实施例提供一种通信方法，包括：
第一网络设备接收第二网络设备发送的目标小区的N个波束的标识信息以及所述N个波束中M个波束的随机接入信道配置，其中，N和M为正整数；
所述第一网络设备向终端发送所述N个波束的标识信息和所述M个波束的随机接入信道配置。
在一种可能的设计中，所述方法还包括：
所述第一网络设备接收所述终端发送的所述终端在预定时间段内的服务波束变化信息；
所述第一网络设备向所述第二网络设备发送所述服务波束变化信息，所述服务波束变化信息用于所述第二网络设备确定所述M个波束的随机接入信道配置的有效期。
在一种可能的设计中，所述方法还包括：
所述第一网络设备接收所述终端发送的所述终端在预定时间段内的服务波束变化信息；
所述第一网络设备根据所述服务波束变化信息，确定所述M个波束的随机接入信道配置的有效期；
所述第一网络设备向所述第二网络设备发送所述M个波束的随机接入信道配置的有效。
在一种可能的设计中，所述随机接入信道配置包括前导码索引和时频资源配置。
在一种可能的设计中，所述方法还包括：所述第一网络设备通过切换消息向所述终端发送波束信号的强度阈值信息或质量阈值信息。
第三方面，本申请实施例提供一种通信方法，包括：
第二网络设备向第一网络设备发送目标小区的N个波束的标识信息以及所述N个波束中M个波束的随机接入信道配置，其中，N和M为正整数。
可选地，所述方法还包括：所述第二网络设备接收第一网络设备发送的终端在预定时间段内的服务波束变化信息；所述第二网络设备根据所述服务波束变化信息，确定所述M个波束的随机接入信道配置的有效期；在所述有效期超时时，所述第二网络设备释放所述M个波束的随机接入信道配置。
可选地，所述方法还包括：所述第二网络设备接收第一网络设备发送的所述M个波束的随机接入信道配置的有效期；在所述有效期超时时，所述第二网络设备释放所述M个波束的随机接入信道配置。
可选地，所述方法还包括：所述第二网络设备通过系统信息向所述终端发送波束信号的强度阈值信息或质量阈值信息。
第四方面，本申请实施例提供一种通信装置，包括：
接收模块，用于接收目标小区的N个波束的标识信息以及所述N个波束中的M个波束的随机接入信道配置，其中，N和M为正整数；
处理模块，用于根据所述N个波束中L个波束的信号质量或者信号强度，所述N个 波束的标识信息以及所述M个波束的随机接入信道配置确定接入的波束，其中L为非负整数。
在一种可能的设计中，所述处理模块，具体用于根根据所述N个波束中L个波束的信号强度，强度阈值信息，所述N个波束的标识信息以及所述M个波束的随机接入信道配置确定接入的波束。
在一种可能的设计中，所述接收模块，还用于接收所述强度阈值信息。
在一种可能的设计中，所述强度阈值信息包括：第一波束信号强度阈值或者强度阈值指示信息，所述强度阈值指示信息用于指示所述第一波束信号强度阈值与第二波束信号强度阈值的关系，所述第二波束信号强度阈值是与测量配置信息中携带的波束信号强度阈值。
在一种可能的设计中，所述处理模块，具体用于：根据所述N个波束中L个波束的信号强度，强度阈值信息，所述N个波束的标识信息以及所述M个波束的随机接入信道配置，从所述M个波束中确定信号强度大于或等于所述第一波束信号强度阈值的波束为接入目标小区的波束。
在一种可能的设计中，所述处理模块，具体用于：在所述M个波束的信号强度均小于所述第一波束信号强度阈值时，根据所述N个波束的标识信息和所述M个波束的随机接入信道配置，从所述M个波束中确定接入目标小区的波束。
在一种可能的设计中，所述处理模块，具体用于：在所述M个波束的信号强度均小于所述第一波束信号强度阈值时，根据所述N个波束的标识、所述L个波束的信号强度、强度阈值信息，从所述L个波束中确定信号强度大于或等于所述第一波束信号强度阈值的波束为接入目标小区的波束。
在一种可能的设计中，所述处理模块，具体用于：根据所述L个波束的信号强度，强度阈值信息，所述N个波束的标识信息，所述N个波束的优先级顺序以及所述M个波束的随机接入信道配置，确定接入目标小区的波束。
在一种可能的设计中，所述处理模块，具体用于：在未搜索到所述M个波束中任一波束时，根据所述N个波束的标识信息，确定所述L个波束中信号强度最强的波束为接入目标小区的波束。
在一种可能的设计中，所述N个波束的标识信息包括：同步信号块标识信息和/或信道状态信息参考信号标识信息；其中，
所述处理模块，具体用于：根据所述N个波束中L个波束的信号强度，强度阈值信息，所述N个波束的标识信息，标识信息为信道状态信息参考信号标识信息的波束的优先级高于标识信息为同步信号块标识信息的波束，以及所述M个波束的随机接入信道配置，确定接入的波束。
在一种可能的设计中，所述处理模块，还用于：若未搜索到所述N个波束中的任一波束；或者，若所述L或者M个波束的信号强度小于所述第一波束信号强度阈值，或者，若未搜索到所述M个波束中的任一波束，则确定最先搜索到的波束为接入的波束，或者，确定信号强度最强的波束为接入的波束，或者，随机确定搜索到的波束为接入的波束，或者，确定搜索到的波束中优先级最高的波束为接入的波束。
在一种可能的设计中，所述随机接入信道配置包括前导码索引和时频资源配置。
需要说明的是，上述第四方面的通信装置，可以是终端，也可以是终端内部的芯片。
第五方面，本申请实施例提供一种通信装置，包括：
接收模块，用于接收第二网络设备发送的目标小区的N个波束的标识信息以及所述N个波束中M个波束的随机接入信道配置，其中，N和M为正整数；
发送模块，用于向终端发送所述N个波束的标识信息和所述M个波束的随机接入信道配置。
在一种可能的设计中，所述接收模块，还用于接收所述终端发送的所述终端在预定时间段内的服务波束变化信息；
所述发送模块，还用于向所述第二网络设备发送所述服务波束变化信息，所述服务波束变化信息用于所述第二网络设备确定所述M个波束的随机接入信道配置的有效期。
在一种可能的设计中，所述还包括：处理模块；
所述接收模块，还用于接收所述终端发送的所述终端在预定时间段内的服务波束变化信息；
所述处理模块，用于根据所述服务波束变化信息，确定所述M个波束的随机接入信道配置的有效期；
所述发送模块，还用于向所述第二网络设备发送所述M个波束的随机接入信道配置的有效。
在一种可能的设计中，所述随机接入信道配置包括前导码索引和时频资源配置。
所述发送模块，还用于通过切换消息向所述终端发送波束信号的强度阈值信息或质量阈值信息。
需要说明的是，上述第五方面的通信装置，可以是网络设备，也可以是网络设备内部的芯片。
第六方面，本申请实施例提供一种通信装置，包括：
发送模块，用于向第一网络设备发送目标小区的N个波束的标识信息以及所述N个波束中M个波束的随机接入信道配置，其中，N和M为正整数。
在一种可能的设计中，所述网络设备还包括：接收模块和处理模块；
所述接收模块，用于接收第一网络设备发送的终端在预定时间段内的服务波束变化信息；
所述处理模块，用于根据所述服务波束变化信息，确定所述M个波束的随机接入信道配置的有效期；在所述有效期超时后，释放所述M个波束的随机接入信道配置。
在一种可能的设计中，所述网络设备还包括：接收模块和处理模块。
所述接收模块，用于接收第一网络设备发送的所述M个波束的随机接入信道配置的有效期；
所述处理模块，用于在所述有效期超时后，释放所述M个波束的随机接入信道配置。
在一种可能的设计中，所述发送模块，还用于通过系统信息向所述终端发送波束信号的强度阈值信息或质量阈值信息。
需要说明的是，上述第六方面的通信装置，可以是网络设备，也可以是网络设备内部的芯片。
第七方面，本申请实施例提供一种终端，包括：处理器和收发机；处理器和收发机用于执行第一方面本申请实施例任一所述的通信方法。
第八方面，本申请实施例提供一种网络设备，包括：处理器和收发机；处理器和收发机用于执行第二方面本申请实施例任一所述的通信方法。
第九方面，本申请实施例提供一种网络设备，包括：处理器和收发机；处理器和收发机用于执行第三方面本申请实施例任一所述的通信方法。
第十方面，本申请实施例提供一种计算机可读存储介质，当存储介质中的指令由通信装置的处理器执行时，使得通信装置能够执行第一方面本申请实施例所述的通信方法。
第十一方面，本申请实施例提供一种计算机可读存储介质，当存储介质中的指令由通信装置的处理器执行时，使得通信装置能够执行第二方面本申请实施例所述的通信方法。
第十二方面，本申请实施例提供一种计算机可读存储介质，当存储介质中的指令由通信装置的处理器执行时，使得通信装置能够执行第三方面本申请实施例所述的通信方法。
本申请实施例提供一种通信方法和装置，通过终端接收N个波束的标识信息以及N个波束中的M个波束的随机接入信道配置，然后终端根据N个波束中L个波束的信号质量或者信号强度，N个波束的标识信息以及M个波束的随机接入信道配置确定接入的波束，提供了一种合理的确定接入波束的方案。进一步的，由于本实施例接入的波束是终端根据N个波束中L个波束的信号质量或者信号强度，以及接收到的M个波束的随机接入信道配置确定的，因此，由此确定的接入的波束可以提高终端接入的成功率。
附图说明
图1为本申请实施例提供的通信系统的示意图；
图2为本申请实施例一提供的通信方法的流程图；
图3为本申请实施例二提供的通信方法的流程图；
图4为本申请实施例三提供的通信方法的流程图；
图5为本申请一实施例提供的通信装置的结构示意图；
图6为本申请一实施例提供的终端的结构示意图；
图7为本申请一实施例提供的通信装置的结构示意图；
图8为本申请一实施例提供的网络设备的结构示意图；
图9为本申请一实施例提供的通信装置的结构示意图；
图10为本申请一实施例提供的网络设备的结构示意图。
具体实施方式
图1为本申请实施例提供的通信系统的示意图，如图1所示，通信系统包括至少两个网络设备和至少一个终端，至少两个网络设备和该至少一个终端通过下述各本申请实施例提供的技术方案进行通信。其中，图1中示出两个网络设备，分别为第一网络设备和第二网络设备，图1中示出了一个终端。
以下，对本申请中的部分用语进行解释说明，以便于本领域技术人员理解：
网络设备：又称为无线接入网(Radio Access Network，RAN)设备，是一种将终端接入到无线网络的设备，可以是长期演进(Long Term Evolution，LTE)中的演进型基站(Evolutional Node B，eNB或eNodeB)，或者中继站或接入点，或者5G网络中的基站， 如发送和接收点(Transmission and Reception Point，TRP)、控制器，在此并不限定。
终端：可以是无线终端也可以是有线终端，无线终端可以是指一种具有无线收发功能的设备，可以部署在陆地上，包括室内或室外、手持或车载；也可以部署在水面上(如轮船等)；还可以部署在空中(例如飞机、气球和卫星上等)。所述终端可以是手机(mobile phone)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(Virtual Reality，VR)终端、增强现实(Augmented Reality，AR)终端、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程医疗(remote medical)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、智慧家庭(smart home)中的无线终端等等，在此不作限定。
本申请实施例中，波束的英文可以写为beam。波束可以包括发射波束和接收波束。发射波束可以是指信号经天线发射出去后在空间不同方向上形成的信号强度的分布，接收波束可以是指从天线上接收到的无线信号在空间不同方向上的信号强度分布。可以理解的是，一个波束的一个或多个天线端口也可以看作是一个天线端口集，也就是说一个天线端口集包括至少一个天线端口。
具体的，波束可以是指具有一定能量传输指向性的预编码向量并且能够通过标识信息去标识该预编码向量，所述能量传输指向性是指在一定空间位置内，接收经过该预编码向量进行预编码处理后的信号具有较好的接收功率，如满足接收解调信噪比等，而在其他空间位置内，接收经过该预编码向量进行预编码处理后的信号的功率较低，不满足接收解调信噪比。不同的通信设备可以有不同的预编码向量，即对应不同的波束，针对通信设备的配置或者能力，一个通信设备在同一时刻可以使用多个不同的预编码向量中的一个或者多个，即同时可以形成一个波束或者多个波束。所述波束可以理解为空间资源。波束可以通过标识信息进行标识，可选地，所述标识信息可以对应配置该用户的对应的资源标识(identity，ID)，比如，所述标识信息可以对应配置的信道状态信息参考信号(Channel status information Reference Signal，CSI-RS)的ID或者资源；也可以是对应配置的上行探测参考信号(Sounding Reference Signal，SRS)的ID或者资源。或者，可选地，所述标识信息也可以是通过波束承载的信号或信道显示或隐式承载的标识信息，比如，所述标识信息包括但是不限于通过波束发送的同步信号或者广播信道指示该波束的标识信息，包括但是不限于通过该波束发送的同步信号块(Synchronization Signal block，SS block)指示该波束的标识信息，其中SS block至少包括主同步信号(PSS)和/或辅同步信号(SSS)和/或广播信道(PBCH)。
需要说明的是，下述方法实施例中以第一网络设备为源基站，第二网络设备为目标基站为例进行说明。
图2为本申请实施例一提供的通信方法的流程图，如图2所示，本实施例的方法可以包括：
S101、目标基站向源基站发送目标小区的N个波束的标识信息以及N个波束中的M个波束的随机接入信道(Random Access Channel，RACH)配置。
本实施例中，目标基站进行接纳控制，允许终端从服务小区切换至目标小区，然后，目标基站向源基站发送目标小区的N个波束的标识信息以及该N个波束中M个波束的 RACH配置。所述RACH配置可以是与SS block相对应的，也可以是与CSI-RS相对应的。其中，N和M为正整数，进一步的，目标基站也可以向源基站发送目标小区的小区标识。
可选的，在目标基站向源基站发送如S101中信息前，目标基站可以接收到源基站发送的源基站发送的切换请求消息，但本实施例并不限于此。
其中，该N个波束的标识信息和M个波束的RACH配置可以包括在目标基站发送给源基站的同一消息或者不同的消息中。或者，目标基站可以在同一时间或不同时间向源基站发送该N个波束的标识信息和M个波束的RACH配置。
可选地，该N个波束的标识信息和M个波束的RACH配置可以包括在目标基站发送给源基站的切换请求确认消息中。
S102、源基站向终端发送目标小区的N个波束的标识信息以及N个波束中的M个波束的RACH配置。
本实施例中，源基站接收目标基站发送的N个波束的标识信息以及N个波束中的M个波束的RACH配置后，向终端发送该N个波束的标识信息以及N个波束中的M个波束的RACH配置。
其中，该N个波束的标识信息和M个波束的RACH配置可以包括在源基站发送给终端的同一消息或者不同的消息中。或者，源基站可以在同一时间或不同时间向终端发送该N个波束的标识信息和M个波束的RACH配置。
可选地，N个波束的标识信息以及N个波束中的M个波束的RACH配置可以包括在源基站向终端发送的切换消息中。其中，该切换消息可以是携带移动控制信息(mobility Control Information)信元的无线资源控制(Radio Resource Control，RRC)连接重配置消息，或者其他的消息，例如不同于RRC连接重配置消息的其他RRC消息，或者层1信令，或者层2信令中。
S103、终端至少根据所述N个波束中L个波束的信号质量或者信号强度，N个波束的标识信息以及M个波束的RACH配置确定接入的波束。
本实施例中，终端根据L个波束的信号质量或者信号强度，N个波束的标识信息、以及上述M个波束的RACH配置确定接入的波束。终端在确定接入的波束之后，使用该波束接入该波束所属的目标小区。
可以理解的是，终端会对搜索到的至少一个波束进行测量，得到波束的信号质量或者强度，搜索到的波束不限于该目标小区的N个波束，也就是说也可以搜索到目标小区之外的波束。也不限定需要测量N个波束中的每个波束都进行测量。
可选的，一种情况下，此处的L也可以看作是检测到的其信号质量或者信号强度的波束的数量。
此处的M个波束可能和L个波束可能有交集，也可能没有交集，本申请实施例对此不做限定。
其中，波束的信号质量可以是波束的第一信号接收质量，波束的信号强度可以是波束的第一信号接收功率，其中，第一信号包括：同步信号和/或参考信号。
本实施例中，源基站向终端发送N个波束的标识信息以及N个波束中的M个波束的RACH配置，然后终端根据N个波束中L个波束的信号质量或者信号强度，N个波束的标识信息以及M个波束的RACH配置确定接入的波束，因此，本实施例提供了一种合理的 确定接入波束的方案。进一步地，由于本实施例接入的波束是终端根据N个波束中L个波束的信号质量或者信号强度，以及接收到的M个波束的RACH配置确定的，因此，由此确定的接入的波束可以提高终端接入小区的成功率，提高了切换成功率。
下面以波束的信号强度为例对如何确定接入的波束进行说明，其中，信号质量的方案与信号强度的方案类似，本实施例不再赘述。
图3为本申请实施例二提供的通信方法的流程图，如图3所示，本实施例的方法可以包括：
S201、终端向源基站发送测量报告。
可选的，终端在向源基站发送测量报告之前，接收源基站发送的测量配置信息，根据配置信息对服务小区和邻区进行测量。
一种可能的实现方式中，该配置信息用于配置终端对服务小区和邻区的波束进行测量，该配置信息包括但不限于波束的数量K以及波束信号强度阈值，简称为X，终端根据信号强度大于或等于X的K个波束的信号强度确定服务小区和邻区的信号强度。当获取的服务小区和邻区的信号强度满足相应的测量事件的判决条件时，如满足类似于LTE中A3或A4或A5或其他测量事件的判决条件时，终端发送测量报告，该测量报告包括：至少一个邻区的信号强度，和/或，各邻区下的K个波束的信号强度，以及服务小区和至少一个邻区的标识信息，服务小区和至少一个邻区的标识信息包括小区ID或小区索引。可选地，该测量报告还可以包括：可选地，该测量报告还可以包括：用于生成各个邻区的信号强度的K个波束的标识信息，或者用于生成各个邻区的信号强度的K个波束的信号强度。
可以理解的是，上述邻区包括图2所示实施例中所述的目标小区。上述配置信息中也可以不携带波束的数量以及波束信号强度阈值信息，此时，终端测量小区的信号强度。
可选地，SS block和CSI-RS是参考信号，是在波束上传输的；上述测量配置信息具体用于配置终端对通过波束传输的SS block和/或CSI-RS进行测量，相应地，波束的信号强度包括：波束的SS block的信号强度和/或CSI-RS的信号强度。其中，通过测量SS block获得信号强度的波束的数量与通过测量CSI-RS获取信号强度的波束的数量可以相同也可以不相同。相应地，测量配置对应的波束信号强度阈值可以包括：SS block波束信号强度阈值和/或CSI-RS波束信号强度阈值，即X包括X1和X2，其中，X1对应SS block波束信号强度阈值，X2对应CSI-RS波束信号强度阈值，其中，X1与X2可以相等也可以不相等。
其中，本实施例中波束的标识信息可以是通过该波束传输的SS block标识信息和/或通过该波束传输的CSI-RS标识信息。
其中，SS block在宽波束上传输，该波束可以用SS block标识信息来标识，如SS block标识信息可以是SS block中的PBCH所带的时间索引指示(time index indication)(隐示或显示)。
CSI-RS在窄波束上传输，该波束可以用CSI-RS标识信息来标识，如CSI-RS标识信息可以是CSI-RS配置的标识，CSI-RS配置中至少包括资源配置，CSI-RS配置还可能包括用于发送CSI-RS的天线端口等。
可选地，测量报告中可以包括携带邻区的至少一个波束的信息(此处的波束的信息可以是波束的信号强度，和/或，波束的标识信息)，至少一个波束的信息可以以列表的形式 包括在测量报告中，比如每个邻区下的波束按照信号强度的强弱排列波束标识。至少一个波束的信息，可以用于目标基站确定配置有RACH配置的波束(即M个波束)。
其中，终端在测量报告中上报邻区中哪些波束的信息，例如可以存在如下两种方式，但本实施例不限于此。
在一种方式中，如果测量的是CSI-RS，由于CSI-RS资源会由源基站在测量配置消息里配置给终端，如果测量配置消息中配置了W个CSI-RS资源，则终端上报这W个CSI-RS资源对应的波束的信息，即上报W个CSI-RS资源中每个CSI-RS资源对应的波束的信息。
在另一种方式中，在终端接收的测量配置消息中包括有一个门限值，该门限值Q与上述的X不相等，该门限值用于终端确定是否需要上报某个波束的信息，即如果终端测量的邻区的波束的信号强度高于(或不低于)这个门限值，则终端在测量报告里上报这个波束的信息。
在另一种方式中，可选地，即终端根据数值P，上报最多P个波束的信息，或者，也可以结合前述的门限值Q，上报高于信号质量或者信号强度高于Q的最多P个波束的信息；该数值P可以预先设置的一个最大数值P，也可以包括在源基站向终端发送的测量配置消息中。
可以理解的是，上述测量报告上报的方式以及测量配置信息的内容可以独立于本申请实施例，也就是说可以应用于本申请实施例之外的其他的方案中。
S202、源基站向目标基站发送切换请求消息。
本实施例中，源基站接收终端发送的测量报告，并根据测量报告做出切换判决，可以将上报的多个邻区中信号强度最强的邻区作为目标小区，向该目标小区所属的目标基站发送切换请求消息，该切换请求消息可以包括目标小区的标识。
可选地，该切换请求消息中还可以包括该目标小区下的至少一个波束的信息(包括波束的信号强度和/或波束的标识信息)。
可选地，源基站可以基于测量报告中的多个邻区的信号强度，向多个邻区均发送切换请求消息，这样可以保证上述目标基站不允许终端切换至目标小区时，其它邻区所属的基站可以根据切换请求消息，允许终端切换至其它邻区。
其中，源基站也可以不限于根据终端的发送的测量报告向目标基站发送切换请求消息，例如源基站也根据当前的网络状态等，向目标基站发送切换请求消息。
可以理解的是，上述切换请求消息是举例说明，也可以是通过其他的消息完成相应的切换准备交互，可以将该类消息称为第一消息。
S203、目标基站向源基站发送切换请求确认消息。
本实施例中，目标基站根据切换请求消息，进行接纳控制后向源基站回复切换请求确认消息，该切换请求确认消息中包括：目标小区的N个波束的标识信息以及N个波束中的M个波束的RACH配置。
可以理解的是，上述切换请求确认消息是举例说明，也可以是通过其他的消息完成相应的切换准备交互，可以将该类消息称为第二消息，第二消息是对第一消息的确认消息。
S204、源基站向终端发送切换消息。
本实施例中，源基站接收到切换请求确认消息后，向终端发送切换消息，该切换消息中包括：目标小区的N个波束的标识信息以及该M个波束的RACH配置。
可以理解的是，上述切换消息是举例说明，也可以是通过其他的消息完成相应的切换指示，可以将该类消息称为第三消息。
可选地，N个波束的标识信息可以是通过列表形式发送。当然N个波束的标识信息也可以通过其他形式发送，本实施例不限于此。
可以理解是，在切换消息中，还可以携带相应的优先级信息，而优先级信息可以有不同的通知方式，举例如下：
在第一种方式中，N个波束的标识信息以列表的形式发送，该列表具有优先级顺序，即列表中波束的顺序与优先级绑定，例如：对于列表中第一个波束的标识信息，该波束的优先级最高，波束的优先级按照优先级高低的顺序依次排列，以两个波束的标识信息为例，若列表为{波束2的标识信息，波束1的标识信息}，则波束2的优先级高于波束1的优先级；
在第二种形式中，N个波束的标识信息以列表的形式发送，该列表中与波束还有对应的优先级信息，该优先级信息用于指示波束的优先级，以两个波束为例，这两个波束以列表的形式发送，该列表本身不具有优先级顺序，但是该列表中包括波束的优先级信息，若列表为{波束1的标识信息优先级信息＝2，波束2的标识信息优先级信息＝1}，则表明波束2的优先级高于波束1的优先级。
S205、终端根据N个波束中L个波束的信号强度，强度阈值信息，N个波束的标识信息以及M个波束的RACH配置确定接入的波束。
其中，该强度阈值信息可以是预先规定好的，也可以是终端接收的。
可以理解的是，如果是根据信号质量确定接入目标小区的波束，会使用相应的质量阈值信息。
其中，终端可以接收源基站发送的强度阈值信息，例如：该强度阈值信息包括在源基站发送给终端的切换消息，在一种方式中，强度阈值信息包括在切换消息中，或者，最小系统信息(minimum SI)可选携带在切换消息中，强度阈值信息包括在切换消息中的最小系统信息(minimum SI)中。该强度阈值信息可以是源基站确定的，或者，该强度阈值信息也可以是源基站接收目标基站发送的，例如：该强度阈值信息包括在目标基站向源基站发送的上述切换请求确认消息中。
其中，终端可以接收目标基站发送的强度阈值信息，例如：该强度阈值信息包括在目标基站通过目标小区广播的系统信息(system information，SI)。其中，SI可以包括最小系统信息(minimum SI)和除最小系统信息外的其他系统信息(other SI)，该强度阈值信息可以包括在SI的minimum SI中，或者，包括在OSI中。
其中，所述强度阈值信息包括：第一波束信号强度阈值和/或强度阈值指示信息，强度阈值指示信息用于指示第一波束信号强度阈值与第二波束信号强度阈值的关系；第二波束信号强度阈值是测量配置消息中携带的波束信号强度阈值，即上述提到的X。
本实施例中，终端接收到切换消息之后，根据强度阈值信息，确定第一波束信号强度阈值；根据N个波束的标识信息，将N个波束中L个波束的信号强度与第一波束信号强度阈值进行比较，以及根据N个波束中M个波束的RACH配置确定接入目标小区的波束。
下面以第一波束信号强度阈值为Y进行说明。
该强度阈值指示信息可以指示X与Y的关系，如指示X与Y是否相等，该强度阈值 指示信息可以是二进制比特值，如“0”表示不相等，“1”表示相等，反之亦可。或者，该强度阈值指示信息为布尔值，’TURUE’表示相等，’FALSE’表示不相等，反之亦可。或者，强度阈值指示信息为一个信元，携带该信元时表明不相等，不携带时表明相等，反之亦可。
若X和Y相等，可选地，该强度阈值信息中可以不携带Y值，终端解读出强度阈值指示信息中指示的“X和Y相等”后，根据该X值来用于确定接入目标小区的波束。可选地，若X和Y不相等，该强度阈值信息中携带Y值，可选地，该强度阈值信息中可以不携带该强度阈值指示信息。
可选地，在N个波束的标识包括：通过波束传输的SS block标识信息和/或通过波束传输的CSI-RS标识信息时，该强度阈值指示信息可以为：SS block强度阈值指示信息和CSI-RS强度阈值指示信息。上述的第一波束信号强度阈值(Y)为第一SS block波束信号强度阈值(Y1)和第一CSI-RS波束信号强度阈值(Y2)。
可选地，强度阈值信息还包括第一指示信息，该第一指示信息用于指示上述Y1与Y2的关系，如Y1与Y2是否相等，该第一指示信息可以是二进制比特值，如“0”表示不相等，“1”表示相等，反之亦可。或者，该第一指示信息为布尔值，’TURUE’表示相等，’FALSE’表示不相等，反之亦可。或者，该第一指示信息为一个信元，携带该信元时表明不相等，不携带时表明相等，反之亦可。
若Y1与Y2的门限值相等，可选地，强度阈值信息中可以带一个阈值，即为Y，其中，Y1和Y2均为Y。由于强度阈值信息中携带一个阈值Y，终端解读出第一指示信息指示“Y1与Y2相等”后，使用Y值(既对应于通过波束传输的SS block的信号强度，也对应于通过波束传输的CSI-RS的信号强度)来确定接入目标小区的波束。若Y1与Y2不相等，该强度阈值信息中携带两个值，即Y1和Y2，终端分别使用Y1和Y2确定接入目标小区的波束。
基于上述对强度阈值信息的描述，上述S205的具体可以为：终端根据接收的N个波束中M个波束的RACH配置，可以确定M个波束均配置有RACH配置(即每个波束均配有与该波束对应的RACH配置)；终端可以得到N个波束中L个波束的信号强度，再将L个波束的信号强度与第一波束信号强度阈值进行比较，据此确定接入的波束。
在第一种可行的实现方式中，N个波束中存在满足以下两个条件的波束：波束配置有RACH配置，并且波束的信号强度大于或等于第一波束信号强度阈值。
终端将M个波束中信号强度大于或等于第一波束信号强度阈值的至少一个波束为接入目标小区的波束。也就是，终端若判断波束配置有RACH配置，并且波束的信号强度大于或等于第一波束信号强度阈值，确定该波束为接入目标小区的波束。本实现方式中确定的接入目标小区的波束属于N个波束，并且属于上述M个波束。
可选地，N个波束的标识信息包括：SS block标识信息和/或CSI-RS标识信息，因此，在N个波束中既包括SS block标识信息标识的波束也包括CSI-RS标识信息标识的波束时，CSI-RS标识信息所标识的波束的优先级高于SS block标识信息所标识的波束，终端优先确定配置有RACH配置，且信号强度大于第一波束信号强度阈值，以及CSI-RS标识信息所标识的波束为接入目标小区的波束。若CSI标识信息所标识的波束均不满足如下条件：波束的RACH配置属于所述M个波束的RACH配置，且信号强度大于第一波束信号强度阈值，则终端再确定波束配置有RACH配置，且信号强度大于第一波束信号强度阈值，以及SS block标识信息所标识的波束为接入目标小区的波束。
可以理解的是，若按照上述各种方式确定出满足上述两个条件的波束为多个时，终端可以将满足上述条件并且第一个搜索到的波束确定为接入目标小区的波束，或者，终端可以从满足上述条件的波束中随机选择接入目标小区的波束，或者，终端可以从满足上述条件的波束中选择信号强度最强的波束为接入目标小区的波束，或者，终端可以从满足上述条件的波束中选择优先级最高的波束为接入目标小区的波束，其中，波束的优先级顺序可以参见上述相关描述。
可选的，CSI-RS标识信息所标识的波束与SS block标识信息所标识的波束的优先级顺序，可以是预先定义的，也可以是网络设备配置的，例如通过切换消息指示该优先级顺序。
其中，上述M个波束中每个波束的RACH配置包括：前导码索引(preamble index)和时频资源配置，该RACH配置可以视为竞争避免随机接入(Contention Free Random Access，CFRA)配置。在终端确定的接入目标小区的波束属于上述M个波束时，终端根据该波束的RACH配置向目标小区发起随机接入过程。
在这种实现方式中，终端确定接入目标小区的波束具有RACH配置且信号强度高，因此终端接入该目标小区的成功率更高。
在第二种可行的实现方式中，在上述M个波束的信号强度均小于第一波束信号强度阈值时，从M个波束中确定接入目标小区的波束。例如，终端对N个波束进行搜索，可获得M个波束的信号强度，在所述M个波束的信号强度均小于第一波束信号强度阈值时，从该M个波束中确定接入目标小区的波束。本实施例中确定的接入目标小区的波束属于上述M个波束。
在M大于1时，终端可以将M个波束中第一个搜索到的波束为接入目标小区的波束，终端可以从M个波束中随机选择接入目标小区的波束，或者，终端可以从M个波束中选择信号强度最强的波束为接入目标小区的波束，或者，终端可以从M个波束中选择优先级最高的波束为接入目标小区的波束，其中，波束的优先级顺序可以参见上述相关描述。
可选地，N个波束的标识信息包括：SS block标识信息和/或CSI-RS标识信息，因此，在N个波束中既包括SS block标识信息标识的波束也包括CSI-RS标识信息标识的波束时，CSI-RS标识信息所标识的波束的优先级高于SS block标识信息所标识的波束，终端优先在所述M个波束中CSI-RS标识信息所标识的波束中确定接入目标小区的波束。若所述M个波束中不包括CSI标识信息所标识的波束，则终端在M个波束中SS block标识信息所标识的波束中确定接入目标小区的波束。
可以理解的是，在CSI-RS标识信息所标识的波束中确定接入目标小区的波束或者在M个波束中SS block标识信息所标识的波束中确定接入目标小区的波束与上述第二种可行的实现方式中在M个波束中确定接入目标小区的波束的方式类似。
在这种实现方式中，终端确定的接入目标小区的波束具有RACH配置，因此终端接入该目标小区的成功率高。
在第三种可行的实现方式中，上述M个波束的信号强度均小于第一波束信号强度阈值，且L个波束中存在信号强度大于或等于第一波束信号强度阈值的波束。
终端根据所述N个波束的标识、L个波束的信号强度、强度阈值信息，将信号强度大于或等于第一波束信号强度阈值的波束为接入目标小区的波束，此时该信号强度大于或者等于第一波束信号强度阈值的波束可以理解为是L个波束中的一个波束。也就是，终端对 N个波束进行搜索，获得L个波束的信号强度，在所述M个波束的信号强度均小于第一波束信号强度阈值时，终端根据接入目标小区的波束的信号强度阈值大于或等于第一波束信号强度阈值，从该L个波束中确定接入目标小区的波束。若L个波束中信号强度大于或等于第一波束信号强度阈值的波束为多个时，终端可以将信号强度大于或等于第一波束信号强度阈值并且第一个搜索到的波束为接入目标小区的波束。或者，终端可以从信号强度大于或等于第一波束信号强度阈值的波束中随机选择接入目标小区的波束，或者，终端可以从信号强度大于或等于第一波束信号强度阈值的波束中选择信号强度最强的波束为接入目标小区的波束，或者，终端可以从信号强度大于或等于第一波束信号强度阈值的波束中选择优先级最高的波束为接入目标小区的波束，其中，波束的优先级顺序可以参见上述相关描述。
可选地，N个波束的标识信息包括：SS block标识信息和/或CSI-RS标识信息，因此，在N个波束中既包括SS block标识信息标识的波束也包括CSI-RS标识信息标识的波束时，CSI-RS标识信息所标识的波束的优先级高于SS block标识信息所标识的波束，终端优先确定信号强度大于或等于第一波束信号强度阈值，且CSI-RS标识信息所标识的波束为接入目标小区的波束。若CSI标识信息所标识的波束中不存在信号强度大于或等于第一波束信号强度阈值的波束，终端确定信号强度大于或等于第一波束信号强度阈值，且SS block标识信息所标识的波束为接入目标小区的波束。
可以理解的是，若确定出的信号强度大于或等于第一波束信号强度阈值的CSI-RS标识信息所标识的波束或者SS block标识信息所标识的波束有多个时，可以采用与上述第三种可行的实现方式中若L个波束中信号强度大于或等于第一波束信号强度阈值的波束为多个时的处理方式类似，此处不再赘述。
可选的，在终端确定的接入目标小区的波束不属于上述M个波束时，终端可以监听并解析该目标小区的系统信息，根据该系统信息中的公共RACH配置向目标小区发起随机接入。
在这种实现方式中，终端确定接入目标小区的波束的信号强度高，因此终端接入该目标小区的成功率高。
在第四种可行的实现方式中，上述M个波束的信号强度均小于第一波束信号强度阈值，且L个波束中不存在信号强度大于或等于第一波束信号强度阈值的波束。
终端根据所述N个波束的标识、L个波束的信号强度，从L个波束中确定信号强度最强的波束为接入目标小区的波束。或者，
终端可以将L个波束中第一个搜索到的波束为接入目标小区的波束。或者，
终端可以从L个波束随机选择接入目标小区的波束。或者，
终端可以从L个波束中选择优先级最高的波束为接入目标小区的波束，其中，波束的优先级顺序可以参见上述相关描述。
本实施例中确定的接入目标小区的波束属于上述L个波束，但是此时确定的接入目标小区的波束可能属于上述M个波束，也可能不属于上述M个波束。
可选地，N个波束的标识信息包括：SS block标识信息和/或CSI-RS标识信息，因此，在N个波束中既包括SS block标识信息标识的波束也包括CSI-RS标识信息标识的波束时，CSI-RS标识信息所标识的波束的优先级高于SS block标识信息所标识的波束，终端优先确 定所述L个波束中CSI-RS标识信息所标识的波束中信号强度最强的波束为接入目标小区的波束。若L个波束中不包括CSI标识信息所标识的波束，则终端确定所述L个波束中SS block标识信息所标识的波束中信号强度最强的波束为接入目标小区的波束。可以理解的是，在CSI-RS标识信息所标识的波束或者SS block标识信息所标识的波束中确定接入目标小区的波束的方式还可以是将第一个搜索到的波束确定为接入目标小区的波束，或者，随机选择，或者选择优先级最高的波束，本申请实施例不做限定。
在这种实现方式中，终端确定接入目标小区的波束的方式较为灵活。
可以理解的是，上述各种可行的实现方式中，是以M大于或等于1的情况说明的。一种可能的情况是，M也可以等于0，此时意味着目标基站没有给目标小区的波束提供RACH配置。此时，可以按照如下方式确定接入目标小区的波束：终端搜索到N个波束中的L个波束，终端可以从该L个波束中确定接入目标小区的波束，例如，将该L个波束中信号强度中最强的波束确定为接入目标小区的波束，或者，终端将L个波束中第一个搜索到的波束确定为接入目标小区的波束，或者，终端将L个波束中优先级最高的波束确定为接入目标小区的波束，或者，终端从L个波束中随机确定接入目标小区的波束。可以理解的是，上述M＝0时确定接入目标小区的波束的方式也可以适用于未搜索到M个波束中任一个波束的场景。
另一种可能的实现方式中，在未搜索上述M个波束中的任一个波束，或者，M等于0，或者，未搜索到N个波束中的任一个波束，或者，L或者M个波束的信号强度均小于第一波束信号质量阈值，或者，M等于0，此时意味着目标基站没有给目标小区的波束提供RACH配置等情况下，也可以采用如下方式中的一种确定接入的波束：
(1)：终端将搜索到的目标小区的波束中信号强度最强的波束为接入目标小区的波束，或者，终端将第一个搜索到的目标小区的波束确定为接入目标小区的波束，或者，终端将搜索到的目标小区的波束中优先级最高的波束确定为接入目标小区的波束，或者，终端从目标小区的波束中随机确定接入目标小区的波束。通过这种方式，使得终端优先接入至目标小区，从而可以尽可能避免接入失败。
(2)：终端确定搜索到的波束中信号强度最强的波束为接入的波束。或者，终端将第一个搜索到的波束确定为接入的波束，此时，该波束可以属于目标小区。或者，终端将搜索到的波束中优先级最高的波束确定为接入邻区的波束。或者，终端随机确定接入的波束，该波束可以属于目标小区。该接入的波束可以属于目标小区，或者，该接入的波束可以属于目标小区之外的邻区。
(3)：终端发起RRC连接重建立过程，可选地，终端在当前服务小区进行RRC连接重建立过程。
在上述本申请实施例的基础上，可选地，如果终端通过上述方式确定波束，发起随机接入过程，但是随机接入过程失败，例如终端发送前导码索引的次数达到最大发送次数，但终端却一直未能收到基站回复的随机接入响应(RAR)消息，终端发起RRC连接重建立过程，可选地，终端在当前服务小区进行RRC连接重建立过程。
本申请上述实施例中提供了多种确定接入的波束的方式，可以使得终端灵活的选择接入的波束。
图4为本申请实施例三提供的通信方法的流程图，如图4所示，本实施例的方法可以 包括：
S301、终端向源基站发送测量报告，测量报告包括终端在预定时间段内的服务波束变化信息。
本实施例中的测量报告可以参见图3所示实施例中的相关描述，另外，本实施例的测量报告中还包括：终端在预定时间段内的服务波束变化信息。该服务波束变化信息例如是终端在预定时间段间内改变的服务波束的次数、终端在各个服务波束停留的时间长短等信息。
可选地，该波束变换信息不限于包括在测量报告中，也可以包括在终端发送给源基站的一个新的RRC消息中或层1信令中或层2信令中。
S302、源基站向目标基站发送切换请求消息，切换请求消息包括所述服务波束变化信息。
本实施例中的切换请求消息可以参见图3所示实施例中的相关描述，另外，本实施例的切换请求消息中还包括：所述服务波束变化信息。
S303、目标基站根据所述服务波束变化信息，确定M个波束的RACH配置的有效期。
本实施例中，目标基站根据该服务波束变换信息可大致判断出终端的移动状况，并基于终端的移动状况，确定M个波束的RACH配置的有效期，如果根据该服务波束变换信息判断出终端频繁变换服务波束，那么目标基站分配给M个波束的RACH配置的有效期较短，反之，目标基站分配给M个波束的RACH配置的有效期较长。
作为S302和S303的一种可替换的方案，源基站根据所述服务波束变化信息，确定有效期；源基站再向目标基站发送切换请求消息，切换请求消息包括有效期。目标基站根据切换请求消息，确定切换请求消息中的有效期为M个波束的RACH配置的有效期。
可以理解的是，RACH配置的有效期超时后，目标基站会释放M个波束的RACH配置，从而可以避免资源被长时间浪费。
其中，S301-S303中的各个步骤也可以独立于后续的步骤，应用于其它的场景中或者方案中，本实施例中的S301-S303不限于应用于本实施例的场景或方案中。
S304、目标基站向源基站发送切换请求确认消息。
本实施例中，切换请求确认消息中包括N个波束的标识信息和M个波束的RACH配置。本实施例中的切换请求消息可以参见图3所示实施例中的相关描述。
其中，S303与S304的执行顺序不分先后。
S305、源基站向终端发送切换消息，切换消息包括目标小区的N个波束的标识信息以及该M个波束的RACH配置。
S306、终端至少根据N个波束中L个波束的信号强度，N个波束的标识信息以及M个波束的RACH配置确定接入的波束。
本实施例中，S305和S306可以参见上述实施例中的相关描述，此处不再赘述。
S307、终端根据接入的波束，向与该波束对应的基站发送前导码索引。
此处，与该波束对应的基站，可能是目标基站，也可能是其他基站，其中，图4中以与该波束对应的基站为目标基站作为例子示出，但本实施例并不限于此。
S308、与该波束对应的基站向终端发送随机接入答复(Random Access Response，RAR)消息。
其中，若终端确定接入目标小区的波束属于上述M个波束，说明接入目标小区的波束配置有RACH配置，因此，终端利用RACH配置向目标基站发送前导码索引。目标基站根据终端发送的前导码索引和/或发送前导码索引所用的时频资源，确定终端向目标小区进行随机接入所选择的波束，目标终端再根据该波束，向终端发送RAR消息，以及目标基站释放M个波束中其他波束的RACH配置。
其中，若终端确定接入目标小区的波束不属于上述M个波束，说明接入目标小区的波束未配置有RACH配置，因此，终端在公共的随机接入信道时频资源上向目标基站发送随机选择的前导码索引。
S309、终端向该波束对应的基站发送RRC连接重配置完成消息。
终端收到RAR消息后，给该波束对应的基站发送RRC连接重配置完成消息。
本实施例中，通过上述方案，终端确定接入目标小区的波束，根据该波束可以提高终端接入目标小区的成功率，提高了切换成功率。另外，终端还上报终端的服务波束变化信息，以使目标基站确定M个波束的RACH配置的有效期，并在有效期超时后，释放M个波束的RACH配置，避免资源的长时间占用，提高了资源利用率。
可以理解的是，上述各个实施例中，由终端实现的方法或步骤，也可以是由终端内部的芯片实现的。由基站，例如源基站等实现方法或者步骤，也可以是由基站内部的芯片实现的。
本申请一实施例提供一种通信装置，该通信装置可以为终端，也可以为终端内部的芯片，如图5所示，本实施例的通信装置，可以包括：接收模块11和处理模块12。
接收模块11，用于接收目标小区的N个波束的标识信息以及所述N个波束中的M个波束的随机接入信道配置，其中，N和M为正整数。
处理模块12，用于根据所述N个波束中L个波束的信号质量或者信号强度，所述N个波束的标识信息以及所述M个波束的随机接入信道配置确定接入的波束，其中L为非负整数。
可选地，所述处理模块12，具体用于根据所述N个波束中L个波束的信号强度，强度阈值信息，所述N个波束的标识信息以及所述M个波束的随机接入信道配置确定接入的波束。
可选地，所述接收模块11，还用于接收所述强度阈值信息。
可选地，所述强度阈值信息包括：第一波束信号强度阈值或者强度阈值指示信息，所述强度阈值指示信息用于指示所述第一波束信号强度阈值与第二波束信号强度阈值的关系，所述第二波束信号强度阈值是与测量配置信息中携带的波束信号强度阈值。
可选地，所述处理模块12，具体用于：根据所述N个波束中L个波束的信号强度，强度阈值信息，所述N个波束的标识信息以及所述M个波束的随机接入信道配置，从所述M个波束中确定信号强度大于或等于所述第一波束信号强度阈值的波束为接入目标小区的波束。
可选地，所述处理模块12，具体用于：在所述M个波束的信号强度均小于所述第一波束信号强度阈值时，根据所述N个波束的标识信息和所述M个波束的随机接入信道配置，从所述M个波束中确定接入目标小区的波束。
可选地，所述处理模块12，具体用于：在所述M个波束的信号强度均小于所述第一 波束信号强度阈值时，根据所述N个波束的标识、所述L个波束的信号强度、强度阈值信息，从所述L个波束中确定信号强度大于或等于所述第一波束信号强度阈值的波束为接入目标小区的波束。
可选地，所述处理模块12，具体用于：根据所述L个波束的信号强度，强度阈值信息，所述N个波束的标识信息，所述N个波束的优先级顺序以及所述M个波束的随机接入信道配置，确定接入目标小区的波束。
可选地，所述处理模块12，具体用于：在未搜索到所述M个波束中任一波束时，根据所述N个波束的标识信息，确定所述L个波束中信号强度最强的波束为接入目标小区的波束。
可选地，所述N个波束的标识信息包括：同步信号块标识信息和/或信道状态信息参考信号标识信息；其中，
所述处理模块12，具体用于：根据所述N个波束中L个波束的信号强度，强度阈值信息，所述N个波束的标识信息，标识信息为信道状态信息参考信号标识信息的波束的优先级高于标识信息为同步信号块标识信息的波束，以及所述M个波束的随机接入信道配置，确定接入的波束。
可选地，所述处理模块12，还用于：若未搜索到所述N个波束中的任一波束；或者，若所述L或者M个波束的信号强度小于所述第一波束信号强度阈值，或者，若未搜索到所述M个波束中的任一波束，则确定最先搜索到的波束为接入的波束，或者，确定信号强度最强的波束为接入的波束，或者，随机确定搜索到的波束为接入的波束，或者，确定搜索到的波束中优先级最高的波束为接入的波束。
可选地，所述随机接入信道配置包括前导码索引和时频资源配置。
本实施例以上所述的通信装置，可以用于执行上述各方法实施例中终端/终端芯片执行的技术方案，其实现原理和技术效果类似，其中各个模块的功能可以参考方法实施例中相应的描述，此处不再赘述。
图6为本申请一实施例提供的终端的结构示意图，如图6所示，本实施例的终端可以包括：处理器21和收发机22。处理器21与收发机22通信连接。
在硬件实现上，以上接收模块11可以是本实施例中的收发机22。或者，收发机22包括发射器和接收机，则以上接收模块11可以为收发机22中的接收机。以上处理模块12可以以硬件形式内嵌于或独立于终端的处理器21中。
所述收发机22可以包括混频器等必要的射频通信器件。所述处理器21可以包括中央处理单元(Central Processing Unit，CPU)、数字信号处理器(digital signal processor，DSP)、微控制器(Microcontroller Unit，MCU)、专用集成电路(Application Specific Integrated Circuit，ASIC)或现场可编程逻辑门阵列(Field－Programmable Gate Array，FPGA)中的至少一个。
可选地，本实施例的终端还可以包括存储器23，存储器23用于存储程序指令，处理器21用于调用存储器23中的程序指令执行上述方案。
所述程序指令可以以软件功能单元的形式实现并能够作为独立的产品销售或使用，所述存储器23可以是任意形式的计算机可读取存储介质。基于这样的理解，本申请的技术方案的全部或部分可以以软件产品的形式体现出来，包括若干指令用以使得一台计算机设 备，具体可以是处理器21，来执行本申请各个实施例中终端的全部或部分步骤。而前述的计算机可读存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
本实施例以上所述的终端，可以用于执行本申请上述各方法实施例中终端或其内部芯片的技术方案，其实现原理和技术效果类似，其中各个模块的功能可以参考方法实施例中相应的描述，此处不再赘述。
本申请一实施例提供一种通信装置，该通信装置可以为网络设备或者网络设备内部的芯片。如图7所示，可以包括：接收模块31和发送模块32。
接收模块31，用于接收第二网络设备发送的目标小区的N个波束的标识信息以及所述N个波束中M个波束的随机接入信道配置，其中，N和M为正整数；
发送模块32，用于向终端发送所述N个波束的标识信息和所述M个波束的随机接入信道配置。
可选地，所述接收模块31，还用于接收所述终端发送的所述终端在预定时间段内的服务波束变化信息；
所述发送模块32，还用于向所述第二网络设备发送所述服务波束变化信息，所述服务波束变化信息用于所述第二网络设备确定所述M个波束的随机接入信道配置的有效期。
可选地，本实施例的通信装置还包括：处理模块33。
所述接收模块31，还用于接收所述终端发送的所述终端在预定时间段内的服务波束变化信息；
所述处理模块33，用于根据所述服务波束变化信息，确定所述M个波束的随机接入信道配置的有效期；
所述发送模块32，还用于向所述第二网络设备发送所述M个波束的随机接入信道配置的有效。
可选地，所述随机接入信道配置包括前导码索引和时频资源配置。
可选地，所述发送模块32，还用于通过切换消息向所述终端发送波束信号的强度阈值信息或质量阈值信息。
本实施例以上所述的通信装置，可以用于执行上述各方法实施例中源基站或其内部芯片执行的技术方案，其实现原理和技术效果类似，其中各个模块的功能可以参考方法实施例中相应的描述，此处不再赘述。
图8为本申请一实施例提供的网络设备的结构示意图，如图8所示，本实施例的网络设备可以包括：处理器41和收发机42。处理器41与收发机42通信连接。
在硬件实现上，以上接收模块31和发送模块32可以是本实施例中的收发机42。或者，收发机42包括发射器和接收器，则以上接收模块31可以是收发机22中的接收器，以上发送模块32可以为收发机42中的发射器。以上处理模块33可以以硬件形式内嵌于或独立于网络设备的处理器41中。
所述收发机42可以包括混频器等必要的射频通信器件。所述处理器41可以包括CPU、DSP、MCU、ASIC或FPGA中的至少一个。
可选地，本实施例的网络设备还可以包括存储器43，存储器43用于存储程序指令， 处理器41用于调用存储器43中的程序指令执行上述方案。
所述程序指令可以以软件功能单元的形式实现并能够作为独立的产品销售或使用，所述存储器23可以是任意形式的计算机可读取存储介质。基于这样的理解，本申请的技术方案的全部或部分可以以软件产品的形式体现出来，包括若干指令用以使得一台计算机设备，具体可以是处理器41，来执行本申请各个实施例中网络设备的全部或部分步骤。而前述的计算机可读存储介质包括：U盘、移动硬盘、ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
本实施例以上所述的网络设备，可以用于执行本申请上述各方法实施例中源基站的技术方案，其实现原理和技术效果类似，此处不再赘述。
本申请一实施例提供了一种通信装置，该通信装置可以为网络设备，也可以为网络设备内部的芯片，如图9所示，可以包括：发送模块51。
发送模块51，用于向第一网络设备发送目标小区的N个波束的标识信息以及所述N个波束中M个波束的随机接入信道配置，其中，N和M为正整数。
可选地，所述通信装置还包括：接收模块52和处理模块53。
在一种可行的实现方式中，所述接收模块52，用于接收第一网络设备发送的终端在预定时间段内的服务波束变化信息。
所述处理模块53，用于根据所述服务波束变化信息，确定所述M个波束的随机接入信道配置的有效期；在所述有效期超时后，释放所述M个波束的随机接入信道配置。
在一种可行的实现方式中，所述接收模块52，用于接收第一网络设备发送的所述M个波束的随机接入信道配置的有效期。
所述处理模块53，用于在所述有效期超时后，释放所述M个波束的随机接入信道配置。
可选地，所述发送模块51，还用于通过系统信息向所述终端发送波束信号的强度阈值信息或质量阈值信息。
本实施例以上所述的通信装置，可以用于执行上述各方法实施例中目标基站或其内部芯片执行的技术方案，其实现原理和技术效果类似，其中各个模块的功能可以参考方法实施例中相应的描述，此处不再赘述。
图10为本申请一实施例提供的网络设备的结构示意图，如图10所示，本实施例的网络设备可以包括：处理器61和收发机62。处理器61与收发机62通信连接。
在硬件实现上，以上接收模块52和发送模块51可以是本实施例中的收发机62。或者，收发机62包括发射器和接收器，则以上接收模块52可以是收发机62中的接收器，以上发送模块51可以为收发机62中的发射器。以上处理模块53可以以硬件形式内嵌于或独立于网络设备的处理器61中。
所述收发机62可以包括混频器等必要的射频通信器件。所述处理器61可以包括CPU、DSP、MCU、ASIC或FPGA中的至少一个。
可选地，本实施例的网络设备还可以包括存储器63，存储器63用于存储程序指令，处理器61用于调用存储器63中的程序指令执行上述方案。
所述程序指令可以以软件功能单元的形式实现并能够作为独立的产品销售或使用，所述存储器63可以是任意形式的计算机可读取存储介质。基于这样的理解，本申请的技术 方案的全部或部分可以以软件产品的形式体现出来，包括若干指令用以使得一台计算机设备，具体可以是处理器61，来执行本申请各个实施例中网络设备的全部或部分步骤。而前述的计算机可读存储介质包括：U盘、移动硬盘、ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
本实施例以上所述的网络设备，可以用于执行本申请上述各方法实施例中目标基站的技术方案，其实现原理和技术效果类似，此处不再赘述。
需要说明的是，本申请实施例中对模块的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。在本申请的实施例中的各功能模块可以集成在一个处理模块中，也可以是各个模块单独物理存在，也可以两个或两个以上模块集成在一个模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。
所述集成的模块如果以软件功能模块的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)或处理器(processor)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质(例如固态硬盘Solid State Disk(SSD))等。

Claims (42)

  1. 一种通信方法，其特征在于，包括：
    接收目标小区的N个波束的标识信息以及所述N个波束中的M个波束的随机接入信道配置，其中，N和M为正整数；
    根据所述N个波束中L个波束的信号质量或者信号强度，所述N个波束的标识信息以及所述M个波束的随机接入信道配置确定接入的波束，其中L为非负整数。
  2. 根据权利要求1所述的方法，其特征在于，所述根据所述N个波束中L个波束的信号强度，所述N个波束的标识信息以及所述M个波束的随机接入信道配置确定接入的波束，包括：
    根据所述N个波束中L个波束的信号强度，强度阈值信息，所述N个波束的标识信息以及所述M个波束的随机接入信道配置确定接入的波束。
  3. 根据权利要求2所述的方法，其特征在于，还包括：接收所述强度阈值信息。
  4. 根据权利要求2或3所述的方法，其特征在于，所述强度阈值信息包括：第一波束信号强度阈值或者强度阈值指示信息，所述强度阈值指示信息用于指示所述第一波束信号强度阈值与第二波束信号强度阈值的关系，所述第二波束信号强度阈值是与测量配置信息中携带的波束信号强度阈值。
  5. 根据权利要求4所述的方法，其特征在于，所述根据所述N个波束中L个波束的信号强度，强度阈值信息，所述N个波束的标识信息以及所述M个波束的随机接入信道配置确定接入的波束，包括：
    根据所述N个波束中L个波束的信号强度，强度阈值信息，所述N个波束的标识信息以及所述M个波束的随机接入信道配置，从所述M个波束中确定信号强度大于或等于所述第一波束信号强度阈值的波束为接入目标小区的波束。
  6. 根据权利要求4所述的方法，其特征在于，所述根据所述N个波束中L个波束的信号强度，强度阈值信息，所述N个波束的标识信息以及所述M个波束的随机接入信道配置确定接入的波束，包括：
    在所述M个波束的信号强度均小于所述第一波束信号强度阈值时，根据所述N个波束的标识信息和所述M个波束的随机接入信道配置，从所述M个波束中确定接入目标小区的波束。
  7. 根据权利要求4所述的方法，其特征在于，所述根据所述N个波束中L个波束的信号强度，强度阈值信息，所述N个波束的标识信息以及所述M个波束的随机接入信道配置确定接入的波束，包括：
    在所述M个波束的信号强度均小于所述第一波束信号强度阈值时，根据所述N个波束的标识、所述L个波束的信号强度、强度阈值信息，从所述L个波束中确定信号强度大于或等于所述第一波束信号强度阈值的波束为接入目标小区的波束。
  8. 根据权利要求5-7任意一项所述的方法，其特征在于，所述根据所述N个波束中L个波束的信号强度，强度阈值信息，所述N个波束的标识信息以及所述M个波束的随机接入信道配置确定接入的波束，包括：
    根据所述L个波束的信号强度，强度阈值信息，所述N个波束的标识信息，所述N个 波束的优先级顺序以及所述M个波束的随机接入信道配置，确定接入目标小区的波束。
  9. 根据权利要求1所述的方法，其特征在于，所述根据所述N个波束中L个波束的信号强度，所述N个波束的标识信息以及所述M个波束的随机接入信道配置确定接入的波束，包括：
    在未搜索到所述M个波束中任一波束时，根据所述N个波束的标识信息，确定所述L个波束中信号强度最强的波束为接入目标小区的波束。
  10. 根据权利要求1-9任意一项所述的方法，其特征在于，所述N个波束的标识信息包括：同步信号块标识信息和/或信道状态信息参考信号标识信息；其中，
    所述根据所述N个波束中L个波束的信号强度，所述N个波束的标识信息以及所述M个波束的随机接入信道配置确定接入的波束，包括：
    根据所述N个波束中L个波束的信号强度，强度阈值信息，所述N个波束的标识信息，标识信息为信道状态信息参考信号标识信息的波束的优先级高于标识信息为同步信号块标识信息的波束，以及所述M个波束的随机接入信道配置，确定接入的波束。
  11. 根据权利要求4所述的方法，其特征在于，若未搜索到所述N个波束中的任一波束；或者，若所述L或者M个波束的信号强度小于所述第一波束信号强度阈值，或者，若未搜索到所述M个波束中的任一波束，所述方法还包括：
    确定最先搜索到的波束为接入的波束，或者，确定信号强度最强的波束为接入的波束，或者，随机确定搜索到的波束为接入的波束，或者，确定搜索到的波束中优先级最高的波束为接入的波束。
  12. 根据权利要求1-11任意一项所述的方法，其特征在于，所述随机接入信道配置包括前导码索引和时频资源配置。
  13. 一种通信方法，其特征在于，包括：
    第一网络设备接收第二网络设备发送的目标小区的N个波束的标识信息以及所述N个波束中M个波束的随机接入信道配置，其中，N和M为正整数；
    所述第一网络设备向终端发送所述N个波束的标识信息和所述M个波束的随机接入信道配置。
  14. 根据权利要求13所述的方法，其特征在于，所述方法还包括：
    所述第一网络设备接收所述终端发送的所述终端在预定时间段内的服务波束变化信息；
    所述第一网络设备向所述第二网络设备发送所述服务波束变化信息，所述服务波束变化信息用于所述第二网络设备确定所述M个波束的随机接入信道配置的有效期。
  15. 根据权利要求13所述的方法，其特征在于，所述方法还包括：
    所述第一网络设备接收所述终端发送的所述终端在预定时间段内的服务波束变化信息；
    所述第一网络设备根据所述服务波束变化信息，确定所述M个波束的随机接入信道配置的有效期；
    所述第一网络设备向所述第二网络设备发送所述M个波束的随机接入信道配置的有效。
  16. 根据权利要求13-15任意一项所述的方法，其特征在于，所述随机接入信道配置 包括前导码索引和时频资源配置。
  17. 根据权利要求13-16任意一项所述的方法，其特征在于，还包括：
    所述第一网络设备向所述终端发送波束信号的强度阈值信息或质量阈值信息。
  18. 一种通信装置，其特征在于，包括：
    接收模块，用于接收目标小区的N个波束的标识信息以及所述N个波束中的M个波束的随机接入信道配置，其中，N和M为正整数；
    处理模块，用于根据所述N个波束中L个波束的信号质量或者信号强度，所述N个波束的标识信息以及所述M个波束的随机接入信道配置确定接入的波束，其中L为非负整数。
  19. 根据权利要求18所述的通信装置，其特征在于，所述处理模块，具体用于根据所述N个波束中L个波束的信号强度，强度阈值信息，所述N个波束的标识信息以及所述M个波束的随机接入信道配置确定接入的波束。
  20. 根据权利要求19所述的通信装置，其特征在于，所述接收模块，还用于接收所述强度阈值信息。
  21. 根据权利要求18或19所述的通信装置，其特征在于，所述强度阈值信息包括：第一波束信号强度阈值或者强度阈值指示信息，所述强度阈值指示信息用于指示所述第一波束信号强度阈值与第二波束信号强度阈值的关系，所述第二波束信号强度阈值是与测量配置信息中携带的波束信号强度阈值。
  22. 根据权利要求21所述的通信装置，其特征在于，所述处理模块具体用于实现如权利要求5-8任一项所述的方法。
  23. 根据权利要求18所述的通信装置，其特征在于，所述处理模块，具体用于：在未搜索到所述M个波束中任一波束时，根据所述N个波束的标识信息，确定所述L个波束中信号强度最强的波束为接入目标小区的波束。
  24. 根据权利要求18-23任意一项所述的通信装置，其特征在于，所述N个波束的标识信息包括：同步信号块标识信息和/或信道状态信息参考信号标识信息；其中，
    所述处理模块，具体用于：根据所述N个波束中L个波束的信号强度，强度阈值信息，所述N个波束的标识信息，标识信息为信道状态信息参考信号标识信息的波束的优先级高于标识信息为同步信号块标识信息的波束，以及所述M个波束的随机接入信道配置，确定接入的波束。
  25. 根据权利要求21所述的通信装置，其特征在于，所述处理模块，还用于：若未搜索到所述N个波束中的任一波束；或者，若所述L或者M个波束的信号强度小于所述第一波束信号强度阈值，或者，若未搜索到所述M个波束中的任一波束，则确定最先搜索到的波束为接入的波束，或者，确定信号强度最强的波束为接入的波束，或者，随机确定搜索到的波束为接入的波束，或者，确定搜索到的波束中优先级最高的波束为接入的波束。
  26. 根据权利要求18-25任意一项所述的通信装置，其特征在于，所述随机接入信道配置包括前导码索引和时频资源配置。
  27. 一种通信装置，其特征在于，用于实现如权利要求13-17任一项所述的通信方法。
  28. 一种计算机可读存储介质，其特征在于，当存储介质中的指令由通信装置的处理器执行时，使得通信装置能够实现如权利要求1-7任意一项所述的通信方法或者如权利要 求13-17任意一项所述的通信方法。
  29. 一种通信方法，其特征在于，包括：
    接收目标小区的N个波束的标识信息以及所述N个波束中的M个波束的随机接入信道配置，其中，N和M为正整数，所述随机接入信道配置包括前导码索引和时频资源配置；
    在所述M个波束中存在信号强度大于或者等于第一波束信号强度阈值的波束时，从所述M个波束中确定信号强度大于或等于所述第一波束信号强度阈值的波束为接入目标小区的波束。
  30. 根据权利要求29所述的方法，其特征在于，还包括：接收所述所述第一波束信号强度阈值。
  31. 根据权利要求29所述的方法，其特征在于，所述接收所述所述第一波束信号强度阈值，包括：
    通过无线资源控制RRC连接重配置消息接收所述第一波束信号强度阈值。
  32. 根据权利要求29-31任一项所述的方法，其特征在于，还包括：
    在所述M个波束的信号强度均小于所述第一波束信号强度阈值时，根据所述N个波束的标识信息和所述M个波束的随机接入信道配置，从所述M个波束中确定接入目标小区的波束。
  33. 根据权利要求29-31任一项所述的方法，其特征在于，还包括：
    在所述M个波束的信号强度均小于所述第一波束信号强度阈值时，从L个波束中确定信号强度大于或等于所述第一波束信号强度阈值的波束为接入目标小区的波束，其中L为非负整数，所述L个波束为检测到信号强度的所有波束。
  34. 根据权利要求29-33任意一项所述的方法，其特征在于，所述从所述M个波束中确定信号强度大于或等于所述第一波束信号强度阈值的波束为接入目标小区的波束，包括：
    根据所述N个波束的优先级顺序以及所述M个波束的随机接入信道配置，确定接入目标小区的波束。
  35. 根据权利要求29所述的方法，其特征在于，还包括：
    在未搜索到所述M个波束中任一波束时，根据所述N个波束的标识信息，确定所述L个波束中信号强度最强的波束为接入目标小区的波束。
  36. 根据权利要求29-35任一项所述的方法，其特征在于，所述N个波束的标识信息包括：同步信号块标识信息和/或信道状态信息参考信号标识信息。
  37. 根据权利要求36所述的方法，其特征在于，标识信息为信道状态信息参考信号标识信息的波束的优先级高于标识信息为同步信号块标识信息的波束。
  38. 根据权利要求32所述的方法，其特征在于，若未搜索到所述N个波束中的任一波束；或者，若所述L或者M个波束的信号强度小于所述第一波束信号强度阈值，或者，若未搜索到所述M个波束中的任一波束，所述方法还包括：
    确定最先搜索到的波束为接入的波束，或者，确定信号强度最强的波束为接入的波束，或者，随机确定搜索到的波束为接入的波束，或者，确定搜索到的波束中优先级最高的波束为接入的波束。
  39. 一种通信装置，其特征在于，用于实现如权利要求29-38任一项所述的通信方法。
  40. 根据权利要求39所述的通信装置，其特征在于，所述通信装置为终端。
  41. 一种计算机可读存储介质，其特征在于，当存储介质中的指令由通信装置的处理器执行时，使得通信装置能够实现如权利要求29-38任意一项所述的通信方法。
  42. 一种程序产品，其特征在于，所述程序产品包括计算机程序，所述计算机程序存储在可读存储介质中，通信装置的至少一个处理器可以从所述可读存储介质读取所述计算机程序，所述至少一个处理器执行所述计算机程序使得通信装置实施如权利要求1-10任意一项所述的通信方法或者如权利要求11-14任意一项所述的通信方法或者如权利要求29-38任意一项所述的通信方法。
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