WO2020227857A1 - 用于随机接入的方法及设备 - Google Patents

用于随机接入的方法及设备 Download PDF

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Publication number
WO2020227857A1
WO2020227857A1 PCT/CN2019/086442 CN2019086442W WO2020227857A1 WO 2020227857 A1 WO2020227857 A1 WO 2020227857A1 CN 2019086442 W CN2019086442 W CN 2019086442W WO 2020227857 A1 WO2020227857 A1 WO 2020227857A1
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WIPO (PCT)
Prior art keywords
target cell
terminal device
information
random access
base station
Prior art date
Application number
PCT/CN2019/086442
Other languages
English (en)
French (fr)
Inventor
王淑坤
Original Assignee
Oppo广东移动通信有限公司
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 Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to EP19928750.9A priority Critical patent/EP4072230A4/en
Priority to CN201980030699.7A priority patent/CN112219439A/zh
Priority to CN202011553158.3A priority patent/CN112672433B/zh
Priority to KR1020217018163A priority patent/KR20220006031A/ko
Priority to AU2019446091A priority patent/AU2019446091A1/en
Priority to PCT/CN2019/086442 priority patent/WO2020227857A1/zh
Publication of WO2020227857A1 publication Critical patent/WO2020227857A1/zh
Priority to US17/156,502 priority patent/US11540316B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/318—Received signal strength
    • H04B17/327—Received signal code power [RSCP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/241—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account channel quality metrics, e.g. SIR, SNR, CIR, Eb/lo
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H04W52/362—Aspects of the step size
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/38—TPC being performed in particular situations
    • H04W52/42—TPC being performed in particular situations in systems with time, space, frequency or polarisation diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/0005—Synchronisation arrangements synchronizing of arrival of multiple uplinks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/004—Synchronisation arrangements compensating for timing error of reception due to propagation delay
    • H04W56/0045—Synchronisation arrangements compensating for timing error of reception due to propagation delay compensating for timing error by altering transmission time
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/004—Transmission of channel access control information in the uplink, i.e. towards network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/008—Transmission of channel access control information with additional processing of random access related information at receiving side

Definitions

  • This application relates to the field of communications, and more specifically, to a method and device for random access.
  • the terminal device When the terminal device performs random access, it can perform random access using the power parameter configured by the base station of the target cell. For example, the terminal device can use the configured power parameter to send the preamble, but the power parameter configured by the network device is usually not too high. The terminal device needs to perform multiple power ramps to successfully send the preamble, but for those with relatively high delay requirements For terminal equipment, too many power increases will affect the reliability of data transmission.
  • This application provides a method and device for random access, which can reduce the time delay of a terminal device in the random access process and improve the reliability of the first message in the random access process.
  • a method for random machine access including: a terminal device initiates random access to a target cell base station; the terminal device sends first information to the target cell base station, and the first information It includes at least one of a power parameter used to transmit the preamble and an uplink timing advance.
  • a method for random machine access including: a terminal device receives updated first configuration information sent by a base station of a target cell, where the first configuration information includes at least one of the following information: Configuration information of the transmit power of the preamble, configuration information of the uplink timing advance; the terminal device performs random access according to the updated first configuration information.
  • a method for random machine access including: a target cell base station obtains first information, where the first information includes at least one of the following information: a power parameter used to transmit a preamble and Uplink timing advance; the target cell base station updates or configures the configuration information of the transmission power of the preamble and/or the configuration information of the uplink timing advance in the random access process according to the first information.
  • a terminal device for executing the method described in the first aspect or any optional implementation of the first aspect.
  • the terminal device includes a functional module for executing the method described in the foregoing first aspect or any optional implementation of the first aspect.
  • a terminal device configured to execute the method described in the foregoing second aspect or any optional implementation manner of the second aspect.
  • the network device includes a functional module for executing the method described in the foregoing second aspect or any optional implementation of the second aspect.
  • a network device configured to execute the method described in the third aspect or any optional implementation of the third aspect.
  • the network device includes a functional module for executing the method described in the foregoing third aspect or any optional implementation of the third aspect.
  • a terminal device including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory to execute the method in the above-mentioned first aspect or each of its implementation modes.
  • a terminal device including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory to execute the method in the above-mentioned second aspect or each of its implementation modes.
  • a network device including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory, and execute the method in the third aspect or its implementation manners.
  • a device is provided to implement the foregoing first aspect or any possible implementation of the first aspect.
  • the device includes a processor, configured to call and run a computer program from the memory, so that the device installed with the device executes the method in the first aspect or any possible implementation of the first aspect.
  • a device for implementing the foregoing second aspect or any possible implementation of the second aspect.
  • the device includes a processor, configured to call and run a computer program from the memory, so that the device installed with the device executes the method in the above-mentioned second aspect or any possible implementation of the second aspect.
  • a device is provided to implement the foregoing third aspect or any possible implementation manner of the third aspect.
  • the device includes a processor, configured to call and run a computer program from the memory, so that the device installed with the device executes the method in the third aspect or any possible implementation manner of the third aspect.
  • a computer-readable storage medium for storing a computer program that enables a computer to execute the above-mentioned first aspect or the method in any possible implementation of the first aspect.
  • a computer-readable storage medium for storing a computer program that enables a computer to execute the method in the second aspect or any possible implementation of the second aspect.
  • a computer-readable storage medium for storing a computer program that enables a computer to execute the method in the third aspect or any possible implementation manner of the third aspect.
  • a computer program product including computer program instructions that cause a computer to execute the above-mentioned first aspect or the method in any possible implementation of the first aspect.
  • a computer program product including computer program instructions, which cause a computer to execute the foregoing second aspect or any possible implementation of the second aspect.
  • a computer program product including computer program instructions that cause a computer to execute the foregoing third aspect or any possible implementation of the third aspect.
  • a computer program which when running on a computer, causes the computer to execute the method in the first aspect or any possible implementation of the first aspect.
  • a computer program which when running on a computer, causes the computer to execute the above-mentioned second aspect or the method in any possible implementation of the second aspect.
  • a computer program which when running on a computer, causes the computer to execute the foregoing third aspect or any possible implementation of the third aspect.
  • the terminal equipment can report the power parameters of the preamble and position-related parameters during the random access process, as well as the uplink timing advance and position-related parameters to the target cell base station, so that The base station of the target cell optimizes the power parameters and the uplink timing advance, which can reduce the delay in the random access process and improve the reliability of data transmission in the random access process.
  • Fig. 1 is a schematic diagram of a wireless communication system applied in an embodiment of the present application.
  • Fig. 2 is a schematic diagram of a contention-based random access process provided by an embodiment of the present application.
  • Fig. 3 is a schematic diagram of a non-contention-based random access process provided by an embodiment of the present application.
  • Figure 4 is a schematic structural diagram of a RAR format provided by an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of another RAR format provided by an embodiment of the present application.
  • Fig. 6 is a schematic structural diagram of a MAC PDU provided by an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of another RAR format provided by an embodiment of the present application.
  • Fig. 8 is a schematic diagram of a method for random access provided by an embodiment of the present application.
  • FIG. 9 is a schematic block diagram of a terminal device provided by an embodiment of the present application.
  • FIG. 10 is a schematic block diagram of another terminal device provided by an embodiment of the present application.
  • FIG. 11 is a schematic block diagram of a network device provided by an embodiment of the present application.
  • FIG. 12 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 13 is a schematic structural diagram of a device provided by an embodiment of the present application.
  • FIG. 14 is a schematic block diagram of a communication system provided by an embodiment of the present application.
  • Fig. 1 is a schematic diagram of a system 100 according to an embodiment of the present application.
  • the terminal device 110 is connected to the first network device 130 under the first communication system and the second network device 120 under the second communication system.
  • the first network device 130 is a Long Term Evolution (Long Term Evolution).
  • the second network device 120 is a network device under a New Radio (NR).
  • NR New Radio
  • the first network device 130 and the second network device 120 may include multiple cells.
  • FIG. 1 is an example of a communication system in an embodiment of the present application, and the embodiment of the present application is not limited to that shown in FIG. 1.
  • the communication system to which the embodiment of the present application is adapted may include at least multiple network devices under the first communication system and/or multiple network devices under the second communication system.
  • the system 100 shown in FIG. 1 may include one main network device under the first communication system and at least one auxiliary network device under the second communication system. At least one auxiliary network device is respectively connected to the one main network device to form multiple connections, and is connected to the terminal device 110 to provide services for it. Specifically, the terminal device 110 may simultaneously establish a connection through the main network device and the auxiliary network device.
  • connection established between the terminal device 110 and the main network device is the main connection
  • connection established between the terminal device 110 and the auxiliary network device is the auxiliary connection.
  • the control signaling of the terminal device 110 may be transmitted through the main connection
  • the data of the terminal device 110 may be transmitted through the main connection and the auxiliary connection at the same time, or may be transmitted only through the auxiliary connection.
  • first communication system and the second communication system in the embodiments of the present application are different, but the specific types of the first communication system and the second communication system are not limited.
  • the first communication system and the second communication system may be various communication systems, such as: Global System of Mobile Communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Time Division Duplex (TDD) ), Universal Mobile Telecommunication System (UMTS), etc.
  • GSM Global System of Mobile Communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • the main network device and the auxiliary network device may be any access network device.
  • the access network device may be a base station (Base Transceiver) in the Global System of Mobile Communications (GSM) system or Code Division Multiple Access (CDMA). Station, BTS), it can also be a base station (NodeB, NB) in a Wideband Code Division Multiple Access (WCDMA) system, or an evolved base station in a Long Term Evolution (LTE) system (Evolutional Node B, eNB or eNodeB).
  • GSM Global System of Mobile Communications
  • CDMA Code Division Multiple Access
  • Station, BTS can also be a base station (NodeB, NB) in a Wideband Code Division Multiple Access (WCDMA) system, or an evolved base station in a Long Term Evolution (LTE) system (Evolutional Node B, eNB or eNodeB).
  • GSM Global System of Mobile Communications
  • CDMA Code Division Multiple Access
  • Station, BTS can also be a base station (NodeB, NB) in a Wideband Code Division Multiple Access (WCDMA) system,
  • the access network device may also be a Next Generation Radio Access Network (NG RAN), or a base station (gNB) in an NR system, or a cloud radio access network (Cloud
  • NG RAN Next Generation Radio Access Network
  • gNB base station
  • Cloud Cloud
  • the radio controller in Radio Access Network, CRAN, or the access network device can be a relay station, access point, in-vehicle device, wearable device, or in the future evolution of Public Land Mobile Network (PLMN) Network equipment, etc.
  • PLMN Public Land Mobile Network
  • the first network device 130 is taken as the main network device, and the second network device 120 is taken as an auxiliary network device as an example.
  • the first network device 130 may be an LTE network device, and the second network device 120 may be an NR network device. Or, the first network device 130 may be an NR network device, and the second network device 120 may be an LTE network device. Or both the first network device 130 and the second network device 120 may be NR network devices. Or the first network device 130 may be a GSM network device, a CDMA network device, etc., and the second network device 120 may also be a GSM network device, a CDMA network device, etc. Or the first network device 130 may be a Macrocell, and the second network device 120 may be a Microcell, Picocell, Femtocell, or the like.
  • the terminal device 110 may be any terminal device, and the terminal device 110 includes but is not limited to:
  • wired lines such as via Public Switched Telephone Networks (PSTN), Digital Subscriber Line (DSL), digital cable, direct cable connection; and/or another data connection/network; and/ Or via a wireless interface, such as for cellular networks, wireless local area networks (WLAN), digital TV networks such as DVB-H networks, satellite networks, AM-FM broadcast transmitters; and/or another terminal device
  • PSTN Public Switched Telephone Networks
  • DSL Digital Subscriber Line
  • WLAN wireless local area networks
  • digital TV networks such as DVB-H networks, satellite networks, AM-FM broadcast transmitters
  • IoT Internet of Things
  • a terminal device set to communicate through a wireless interface may be referred to as a "wireless communication terminal", a "wireless terminal” or a "mobile terminal”.
  • Examples of mobile terminals include, but are not limited to, satellites or cellular phones; Personal Communications System (PCS) terminals that can combine cellular radio phones with data processing, fax, and data communication capabilities; can include radio phones, pagers, Internet/intranet PDA with internet access, web browser, memo pad, calendar, and/or Global Positioning System (GPS) receiver; and conventional laptop and/or palmtop receivers or others including radio phone transceivers Electronic device.
  • Terminal equipment can refer to access terminals, user equipment (UE), user units, user stations, mobile stations, mobile stations, remote stations, remote terminals, mobile equipment, user terminals, terminals, wireless communication equipment, user agents, or User device.
  • the access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital processing (Personal Digital Assistant, PDA), with wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in 5G networks, or terminal devices in the future evolution of PLMN, etc.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • the network equipment provides services for the cell, and the terminal equipment communicates with the network equipment through the transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell.
  • the cell may be a network equipment (for example, The cell corresponding to the base station.
  • the cell can belong to a macro base station or a base station corresponding to a small cell.
  • the small cell here can include: Metro cell, Micro cell, Pico Cells, Femto cells, etc. These small cells have the characteristics of small coverage and low transmit power, and are suitable for providing high-rate data transmission services.
  • the method in the embodiment of the present application can be used to transmit various types of services.
  • the application scenarios of the embodiments of this application may include enhanced mobile broadband (eMBB), ultra-reliable and low latency communications (URLLC), and large-scale machine-type communications (URLLC).
  • eMBB enhanced mobile broadband
  • URLLC ultra-reliable and low latency communications
  • URLLC large-scale machine-type communications
  • mMTC machine type communication
  • eMBB which targets users to obtain multimedia content, services and data, and its demand is growing very rapidly.
  • eMBB may be deployed in different scenarios, such as indoors, urban areas, and rural areas, the differences in capabilities and requirements are relatively large. Therefore, detailed analysis can be combined with specific deployment scenarios.
  • URLLC Typical applications of URLLC include: industrial automation, power automation, telemedicine operations (surgery), traffic safety protection, etc.
  • Typical features of mMTC include: high connection density, small data volume, delay-insensitive services, low-cost modules and long service life.
  • the embodiment of the present application does not specifically limit the deployment mode of the system.
  • NR cells can also be deployed independently.
  • NR cells can use beams for transmission, and one cell can include multiple beams.
  • a terminal device Before a terminal device obtains a radio resource control (RRC) connection with a network device, it needs to perform a random access process, that is, initiate random access to the network device. Only when the random access is successful, RRC connection with network equipment. After the terminal device establishes an RRC connection with the network device, subsequent data transmission can be performed.
  • RRC radio resource control
  • the embodiment of this application does not specifically limit the random access mode of the terminal device.
  • it may be random access based on contention, or random access based on non-contention.
  • the terminal device may use a four-step random access method for random access, or may use a two-step random access method for random access.
  • Figure 2 is a contention-based random access process, which can also be a four-step random access process. This process may include steps S210 to S240.
  • the terminal device sends a message 1 (message1, MSG1) to the network device on the random access channel, where the MSG1 contains a random access preamble.
  • MSG1 may be a physical layer message.
  • the terminal device Before sending MSG1, the terminal device can select the preamble to be sent and the physical random access channel (PRACH) resource for sending the preamble.
  • PRACH physical random access channel
  • the terminal device can select one of the 64 preambles and send it to the network device.
  • the network device may send MSG2 on a downlink shared channel (DL-SCH), where MSG2 may be a random access response (Random Access Response, RAR).
  • MSG2 may be a media access control (media access control, MAC) layer message.
  • the network equipment can calculate the random access radio network temporary identifier (RA-RNTI) used to scramble the MSG2 according to the PRACH resource of the preamble sent by the terminal equipment.
  • RA-RNTI random access radio network temporary identifier
  • the RAR response carries the timing advance (TA) adjustment of uplink transmission and the available uplink resource information, as well as the temporary cell radio network temporary identifier (T-CRNTI), that is, the temporary cell radio network temporary identifier (T-CRNTI). CRNTI.
  • TA timing advance
  • T-CRNTI temporary cell radio network temporary identifier
  • T-CRNTI temporary cell radio network temporary identifier
  • the RAR response can be generated by the MAC layer of the network device.
  • One MSG2 can simultaneously respond to random access requests from multiple terminal devices.
  • the terminal device may determine the RA-RNTI for scrambling MSG2 according to the PRACH resource of the transmitted preamble, and use the RA-RNTI to decode MSG2. If the terminal device decodes successfully, it means that the MSG2 is its own RAR message. Then the terminal device can send message 3 (message3, MSG3) in the uplink resource designated by the MSG2, and the MSG3 carries the specific RNTI of the terminal device. Among them, the MSG3 may be an RRC layer message.
  • the network device may send an MSG4 message to the terminal device.
  • the MSG4 includes contention resolution messages and uplink transmission resources allocated by the network equipment to the terminal equipment.
  • the MSG4 may be a MAC layer message.
  • the terminal device After receiving the MSG4, the terminal device can detect whether the specific RNTI sent in the MSG3 is included in the contention resolution message sent by the network device. If it is included, it indicates that the random access procedure of the terminal device is successful; otherwise, it is considered that the random procedure fails. After the random access process fails, the terminal device needs to initiate the random access process again from the first step.
  • MSG1 and MSG2 may not use the HARQ mechanism, while MSG3 and MSG4 may use the HARQ mechanism.
  • the terminal device can also initiate the next random access attempt until the maximum number of retransmissions and/or maximum retransmission time allowed by the network side is reached.
  • the terminal device generally performs random access by sending a preamble to the network device. If the terminal device sends the preamble for the first time, if the current random access fails, the terminal device can send the random access preamble to the network device for the second time, and the transmission power of the second preamble can be the first The transmit power of a preamble after a power rise.
  • the step length of the power increase may be configured by the network device, or may also be pre-configured in the terminal device.
  • Fig. 3 is a non-competition-based random access procedure, which may include steps S310 to S330.
  • the network device sends MSG0 to the terminal device.
  • the MSG0 may include a preamble configuration message, which is used to indicate a preamble for random access.
  • the MSG0 may be a physical layer message.
  • the terminal device sends MSG 1 to the network device, where the MSG1 includes the random access preamble in S310.
  • the MSG1 may be a physical layer message.
  • the network device sends MSG2 to the terminal device, where the MSG2 may be a random access response message.
  • the MSG2 may be a MAC layer message.
  • the terminal device can obtain non-competitive random access resources through RRC signaling and/or PDCCH signaling, and perform random access on the non-competitive random access resources.
  • RAR's MAC layer data format can be shown in Figure 4-7.
  • MAC RAR can be carried in a MAC protocol data unit (protocol data unit, PDU).
  • PDU protocol data unit
  • a MAC PDU can include three parts in structure, one part is a MAC header, the size of which is variable; the other part is RAR load, which is RAR load It can include one or more MAC RARs; the other part is padding information, which is optional.
  • One MAC header may include one or more MAC sub-headers.
  • the MAC header may include two types of sub-headers, as shown in FIG. 4 and FIG. 5.
  • RAPID random access preamble identifier
  • RAPID is the preamble in MSG1 received in response to the network device, and the value of RAPID may be the value of the preamble sent by the terminal device to the network device.
  • the field "BI" represents a backoff indicator, which is used to indicate the backoff time for retransmission of MSG1.
  • Figure 6 shows a schematic structural diagram of a MAC PDU including a MAC RAR.
  • Figure 6 shows a case where the MAC header includes multiple MAC subheaders. Of course, one MAC header may also include one MAC subheader.
  • the RAR may include at least one of the following information: uplink timing advance, uplink grant (UL grant) information, and temporary C-RNTI.
  • uplink grant information is used to indicate the uplink resources available for the terminal device to send the MSG.
  • the uplink timing advance is used to adjust the uplink timing of sending uplink data by the terminal device.
  • Temporary C-RNTI is used to scramble the PDCCH in MSG4.
  • the network device may not receive the preamble.
  • the network device’s failure to receive the preamble may be caused by the low transmission power of the terminal device.
  • the terminal device does not receive the RAR within the pre-configured time, it needs to increase the power to increase the transmission power of the preamble. Send the preamble with the increased transmit power afterwards.
  • the power of each preamble sent by the terminal device can be calculated by the following formula:
  • the transmit power of the preamble the expected received power of the preamble + the power offset + (the number of times the preamble is climbed-1) * the power climb step length.
  • the expected received power of the preamble indicates the power expected to be received by the target cell base station, that is, the power of the preamble expected to be received by the target cell base station after the terminal device sends the preamble to the target cell base station.
  • the power offset is related to the format of the preamble, as shown in Table 1.
  • the preamble format is 0 and 1
  • the power offset is 0dB
  • the preamble format is 2 and 3
  • the power offset is -3dB
  • the preamble format is 4, the power offset is 8dB.
  • Preamble format Power offset 0 0dB 1 0dB 2 -3dB 3 -3dB 4 8dB
  • the expected received power, power offset, and power increase step size of the preamble may be configured by the network device.
  • the network device may broadcast the configuration information of the transmit power of the preamble, and the configuration information may include the expected received power, the power offset, and the power ramp step.
  • the terminal device transmits the preamble for the first time, it can determine the transmission power according to the expected received power and power offset. After the first transmission of the preamble fails, the terminal device can increase the power according to the power increase step configured by the network device , And send the preamble with the power after climbing. Repeat the above steps until the terminal device receives the RAR sent by the network device.
  • the power configuration information broadcast by the network device is not necessarily suitable for the terminal device.
  • the terminal device may need to go through multiple power increases to successfully send the preamble, which increases the delay in the random access process of the terminal device, which is not good for the terminal Equipment quickly enters the network to start business.
  • the expected received power configured by the network equipment to the terminal equipment should not be too high, too high will cause uplink interference. Therefore, how the network device configures the transmission power of the preamble to the terminal device to reduce the delay in the random access process of the terminal device has become an urgent problem to be solved.
  • the terminal device usually only knows the uplink timing advance after receiving the RAR sent by the network device, and then can transmit data with the timing advance. Therefore, when the terminal device sends the preamble, it does not know the uplink timing advance, which will reduce the reliability of the preamble. Therefore, how to improve the reliability of sending the preamble by the terminal device has become an urgent problem to be solved.
  • the embodiment of the present application provides a method for random access, which can reduce the time delay of the random access process of the terminal device, and can improve the reliability of the terminal device in sending the preamble. As shown in Figure 8, the method includes steps S810 to S820.
  • S810 The first terminal device initiates random access to the target cell base station.
  • the first terminal device Before establishing an RRC connection with the target cell base station, the first terminal device needs to initiate random access to the target cell base station, and can establish a connection with the target cell base station after the random access is successful.
  • the target cell base station may refer to the network equipment described above.
  • the target cell base station may refer to the base station where the target cell is located, and the target cell may refer to the cell that the terminal device wishes to access.
  • a base station may include one target cell or multiple target cells.
  • the first terminal device sends the first information to the base station of the target cell.
  • the first information includes at least one of a power parameter used to transmit the preamble and an uplink advance, and the first information may also include at least one of the following information.
  • the first information may also include at least one of the following information: the preamble used by the first terminal device for random access, the identification information of the target cell, the signal quality of the target cell, the beam index used by the first terminal device, the target The signal quality of at least one beam in the cell, the order of the signal quality of the at least one beam in the target cell, and the location information of the terminal device.
  • the first information reported by the first terminal device may be reported to the target cell base station during the random access process, or may be reported to the target cell base station when the random access is completed and in the RRC connected state.
  • the first terminal device may report the first information to the base station of the target cell in response to the completion of the random access.
  • the power parameter of the transmitted preamble may include the number of power climbs of the first terminal device during the random access process and/or the power level of the first terminal device.
  • the number of power ramps can reflect the delay in the random access process of the first terminal device to a certain extent, and the more power ramps the number of times, the longer the delay in the random access process of the first terminal device.
  • the base station of the target cell may optimize the transmission power of the preamble according to the number of power climbs.
  • the power level of the first terminal device can indicate the power used by the first terminal device to transmit the preamble for the last time.
  • the base station of the target cell can determine the transmit power of the preamble based on the expected received power and the power used by the first terminal device for the last preamble transmission. optimize. If the difference between the expected received power and the last transmit power is large, it means that the target cell base station needs to optimize the transmit power of the preamble.
  • the terminal device may not report the step length of the power increase.
  • the terminal device may also report the step length of the power increase to the target cell base station.
  • the uplink timing advance may be obtained by the first terminal device from the RAR sent by the base station of the target cell. Since the uplink timing advance is sent by the target cell base station to the first terminal device, the first terminal device does not need to report the uplink advance to the target cell base station, but only needs to report its own identification and/or location information to the target. Cell base station.
  • the signal quality of the target cell includes at least one of the following information: the reference signal receiving power (RSRP) of the target cell, the reference signal received quality (RSRQ) of the target cell, and the signal and signal quality of the target cell.
  • RSRP reference signal receiving power
  • RSRQ reference signal received quality
  • SINR Interference plus noise ratio
  • the signal quality of at least one beam in the target cell may include at least one of the following information: RSRP of at least one beam and beam index of at least one beam, RSRQ of at least one beam, beam index of at least one beam, and beam index of at least one beam. SINR and the beam index of at least one beam. That is, when the first terminal device reports the signal quality of the beam, it will also report the index of the beam to the target cell base station, so that the target cell base station can determine which beam the beam signal quality reported by the first terminal device corresponds to.
  • the at least one beam may refer to all beams in the target cell, or may refer to some beams in the target cell. For example, if there are 10 beams in the target cell, the first terminal device may report the signal quality of the 10 beams to the target cell base station, or the first terminal device may only measure 5 beams among them, and then The signal quality of the 5 beams is reported to the base station of the target cell.
  • the signal quality of the target cell may be determined according to the signal quality of at least one beam in the target cell.
  • the signal quality of the target cell may be obtained by averaging the signal quality of at least one beam in the target cell.
  • the ordering of the signal quality of at least one beam in the target cell may mean that the first terminal device can order the measured signal quality of the at least one beam from high to low, or from low to high, and arrange the sorted The order of at least one beam is reported to the target cell base station.
  • the first terminal device may report the order of the ordered beam indexes to the target cell base station.
  • the signal quality of the at least one beam may be sorted according to the size of the RSRP, or may be sorted according to the size of the RSRQ, or may be sorted according to the size of the SINR.
  • the first terminal device may also integrate the RSRP, RSRQ, and SINR of at least one beam for ordering, which is not specifically limited in the embodiment of the present application.
  • the first terminal device may record the first information during the random access process, and report the first information to the target base station after the random access is completed.
  • the first terminal device can record the number of power rises in the random access process, the identification information of the target cell, the index of the currently used beam, the signal quality of the target cell, and at least one beam in the target cell during the random access process.
  • the signal quality of at least one beam in the target cell and the position information of the terminal equipment may record the first information during the random access process, and report the first information to the target base station after the random access is completed.
  • the first terminal device can record the number of power rises in the random access process, the identification information of the target cell, the index of the currently used beam, the signal quality of the target cell, and at least one beam in the target cell during the random access process.
  • the signal quality of at least one beam in the target cell and the position information of the terminal equipment.
  • Recording the first information may mean that the first terminal device stores the first information, or may mean that the first terminal device measures the first information.
  • the first terminal device measures the signal quality of the cell and/or measures the quality of at least one beam in the target cell.
  • the embodiment of the present application does not specifically limit the moment when the first terminal device records the first information, and the first terminal device may record the first information at any time during the random access process.
  • the first information may be recorded at at least one of the following moments: the moment when the first terminal device receives the random access response message sent by the target cell base station, and the moment when the first terminal device sends the preamble , The time when the random access of the first terminal device is completed.
  • the moment when the first terminal device sends the preamble can be understood as the moment when the first terminal device sends the first message in the random access process.
  • the moment when the random access is completed may mean that the first terminal device receives MSG4, and the MSG4 indicates that the contention resolution is successful.
  • the time when the random access is completed may refer to the time when the first terminal device receives the random access response message sent by the base station of the target cell.
  • the first terminal device may record the first information during each random access process. Alternatively, the first terminal device may only record the first information during the last random access process.
  • the first information may be used for the target cell base station to update or configure the uplink timing advance and/or the transmission power of the preamble.
  • the target cell base station may configure the determined uplink timing advance to the terminal device. If the target cell base station has previously broadcast the uplink timing advance, the target cell base station can update the previously broadcast uplink timing advance.
  • the broadcast uplink timing advance can be broadcast using a dedicated system message, or broadcast the system message before multiplexing.
  • Updating or configuring the uplink timing advance can mean that the base station of the target cell broadcasts the uplink timing advance through a system message in advance. For example, it can broadcast the uplink timing advance while broadcasting the transmission power of the preamble. Updating the transmit power of the preamble may refer to that after the base station of the target cell broadcasts the transmit power of the preamble, it rebroadcasts the updated transmit power according to the first information reported by the first terminal device.
  • the first terminal device sends the first information to the base station of the target cell after the random access is completed. This may mean that the first terminal device immediately reports the first information to the base station of the target cell after the random access is completed. After receiving the successful contention resolution message, the first information is immediately reported to the target cell base station. Alternatively, the first terminal device sends the first information to the base station of the target cell after the random access is completed, which may mean that the first terminal device reports to the base station of the target cell after a certain preset time interval after the random access is completed First information.
  • the embodiment of the application may not be limited to reporting the first information to the target cell base station after the random access is completed.
  • the first terminal device may report the first information to the target cell base station after receiving the random access response sent by the target cell base station.
  • a piece of information for example, in some cases, the first terminal device may report the first piece of information to the network device through MSG3.
  • the embodiment of the present application divides the content of the first information into information a and information b for description.
  • the information a includes at least one of a power parameter used to transmit the preamble and an uplink advance
  • the information b includes the first Information other than information a.
  • the first terminal device may report the preamble used in the random access process to the target cell base station, so that the target cell base station can establish correspondences between different preambles and transmission power and/or uplink timing advance.
  • the first terminal device reports the identification information of the target cell, so that the target cell base station can determine which cell the first terminal device is in.
  • the first terminal device reports the currently used beam index, so that the target cell base station can determine which beam the first terminal device uses for random access.
  • the target cell base station can determine the foregoing information of the first terminal device by itself, the first terminal device may not report the information to the target cell base station.
  • the purpose of the first terminal device reporting information b is for the target cell base station to determine the location information of the first terminal device, so that the target cell base station can perform random access based on the location information of the terminal device and the uplink time advance.
  • the parameters in the process are optimized; or the target cell base station is made to optimize the parameters in the random access process according to the location information of the terminal equipment and the transmission power of the preamble.
  • the base station of the target cell may consider the location information of the terminal device when optimizing the power parameters. For example, if there are multiple terminal devices in the central area of the target cell with long delays, the base station of the target cell can optimize the power parameters, such as increasing the expected received power, or increasing the step size of the power increase. If the delay of the terminal equipment in the central area can meet the requirements, but the delay of the terminal equipment in the edge area is longer, the target cell base station may or may not optimize the power parameters.
  • the optimization method of the target cell base station depends on the specific implementation of the network, which is not specifically limited in the embodiment of the present application.
  • the first terminal device When the first terminal device reports, it may also only report the power parameter of the transmitted preamble, instead of reporting other information such as location information.
  • the target cell base station may only compare the power parameters of the preamble according to the power parameters reported by multiple first terminal devices. The transmit power is optimized. For example, if more than 50% of the terminal devices reported have high latency, the target cell base station can optimize the transmission power of the preamble; if only 10% of the reported terminal devices have If the time delay of the terminal equipment is relatively high, the base station of the target cell does not need to optimize the transmission power of the preamble.
  • the target cell base station after the target cell base station receives a large number of first information reported by the first terminal device, it can determine the uplink timing advance information corresponding to the first terminal device at different locations, and then the target cell base station can compare the different locations with the uplink timing advance information.
  • the corresponding relationship of the timing advance is broadcast to the terminal device through the system message.
  • the second terminal device that needs to access the target cell may determine its own uplink timing advance according to the corresponding relationship, and then use the uplink timing advance to perform random access.
  • the order of the signal quality of the target cell, the signal quality of at least one beam in the target cell, and the signal quality of at least one beam in the target cell in the information b can reflect the location information of the terminal device to a certain extent.
  • the first information includes power parameters used to transmit the preamble, and the first information may also include at least one of the following information: signal quality of the target cell, signal of at least one beam in the target cell Quality, ranking of signal quality of at least one beam in the target cell and location information of the terminal device.
  • the first information includes the uplink timing advance, and the first information may also include at least one of the following information: signal quality of the target cell, signal quality of at least one beam in the target cell, target The order of the signal quality of at least one beam in the cell and the location information of the terminal device.
  • the first terminal device can report the power parameter and information b in the random access process to the target cell base station, so that the target cell base station can compare the preamble according to the power parameter and information b.
  • the power parameters are optimized to reduce the delay in the random access process of terminal equipment.
  • the first terminal device can report the uplink timing advance and information b to the target cell base station, so that the target cell base station can broadcast the corresponding relationship between the uplink timing advance and information b to the terminal device, and subsequently needs to access the target cell base station
  • the second terminal device of may determine the uplink timing advance of its current location in the broadcast message, without waiting for the RAR to be received before determining the uplink timing advance. In this way, the uplink timing advance can be used when sending the first message in the random access process, which can improve the reliability of the first message in the random access process.
  • the uplink timing advance reported by the first terminal device may be obtained from the RAR sent by the base station of the target cell after the terminal device receives the RAR in the random access process.
  • the first terminal device sending the first information to the target cell base station may send the first information to the target cell base station when the target cell base station supports a function of optimizing parameters for random access. For a base station that does not support the function of optimizing parameters for random access, the first terminal device may not need to send the first information to the base station. Of course, in this case, the first terminal device may not need to record the first information.
  • the function of supporting optimization of parameters for random access may mean that the base station supports updating the parameters in the random access process, such as supporting updating the parameters of the transmission power of the preamble, or supporting broadcasting or updating the uplink timing advance.
  • the first terminal device reports the first information to the target cell base station.
  • the first terminal device may actively report the first information to the target cell base station, or the first terminal device may send the first information to the target cell base station based on the request of the target cell base station. information.
  • the first terminal device may receive a request message sent by the target cell base station, where the request message is used to instruct the first terminal device to send the first information to the target cell base station; after receiving the request message, the first terminal device is based on The request message sends the first information to the base station of the target cell.
  • the first terminal device may send first indication information to the base station of the target cell after the random access is completed.
  • the first indication information is used to indicate that the first information is recorded in the first terminal device, or the An indication information is used to indicate that information used to optimize parameters in the random access process is recorded in the first terminal device.
  • the target cell base station may determine whether it needs to send a request message to the terminal device according to its own situation, so as to request the first terminal device to send the first information.
  • the target cell base station may send a request message to the first terminal device; if the target cell base station does not support the function of optimizing parameters for random access, then The target cell base station may not send the request message to the first terminal device.
  • the first terminal device sends the first indication information to the target cell base station. It may directly send the first indication information to the target cell base station after the random access is completed, or the first terminal device may also support optimization for the target cell base station. In the case of the random access parameter function, the first indication information is sent to the target cell base station.
  • the target cell base station can broadcast whether it supports the function of optimizing parameters for random access, so that the first terminal device can determine whether it needs to send the first indication information and/or the first information to the target cell base station, which is beneficial to saving signaling overhead .
  • the target cell base station may broadcast second indication information, which is used to indicate that the target cell base station supports the function of optimizing parameters for random access. After receiving the second indication information, the first terminal device may report to the target The cell base station sends the first indication information and/or the first information.
  • the second indication information broadcast by the base station of the target cell may be broadcast through a system message.
  • the first indication information may be carried in at least one of the following messages: an RRC connection establishment complete message, an RRC re-establishment complete message, and an RRC connection recovery complete message.
  • the first terminal device may send the first information through dedicated signaling.
  • the first terminal device may send a first message to the target cell base station, where the first message is dedicated to carrying the first information.
  • the base station of the target cell may perform parameter optimization according to the first information reported by the multiple first terminal devices.
  • the specific optimization process depends on the product realization of the network.
  • the first information may include the number of power climbs and location information of the first terminal device.
  • the base station of the target cell may determine an optimization scheme according to the power climb times and location information reported by the multiple first terminal devices. If the target cell base station is determined to be in a certain location or a certain area, the power of multiple first terminal devices has a higher number of times. At this time, the target cell base station can optimize the power parameters of the location or the area, such as increasing the expected reception Power and/or increase the power climb step size.
  • the method shown in FIG. 8 may further include S830 and S840.
  • the target cell base station may update or configure configuration information in the random access process, where the configuration information includes at least one of the following information: configuration of the transmit power of the preamble Information and/or uplink timing advance configuration information. After the configuration information is updated or configured, the target cell base station can broadcast the updated configuration information.
  • the embodiment of the present application may refer to the updated configuration information as the first configuration information, and refer to the configuration information before the update as the second configuration information.
  • the second configuration information is broadcast by the terminal device before receiving the first information sent by the first terminal device
  • the first configuration information is broadcast by the terminal device after receiving the first information sent by the first terminal device.
  • the first configuration information is sent by the network device after the second configuration information is sent.
  • the first configuration information may be received by the second terminal device before receiving the random access response message sent by the base station of the target cell.
  • the information contained in the first configuration information and the second configuration information may be the same or different.
  • both the first configuration information and the second configuration information include power configuration information and/or uplink timing advance configuration information.
  • the second configuration information does not include uplink timing advance configuration information
  • the first configuration information may include uplink timing advance configuration information.
  • the first configuration information may only include the updated information in the second configuration information, and the target cell base station may not broadcast the information that is not updated.
  • the first configuration information and the second configuration information contain the same information, which does not mean that the contents of the first configuration information and the second configuration information are the same, but that the first configuration information and the second configuration information may both include power configuration information, but The specific parameters of the power configuration information are different.
  • the second terminal device may receive the first configuration information sent by the base station of the target cell for random access. For example, the second terminal device may perform random access according to the first configuration information sent by the base station of the target cell.
  • the second terminal device may receive the first configuration information before the random access succeeds.
  • the second terminal device may receive the first configuration information before receiving the random access response message sent by the base station of the target cell.
  • the configuration information of the transmission power of the preamble may be the expected reception power of the preamble, the transmission power offset of the preamble, and the adjustment step size of the transmission power of the preamble.
  • the target cell base station When the target cell base station broadcasts the updated configuration information, it may broadcast at least one of the expected received power of the preamble, the transmission power offset of the preamble, and the adjustment step size of the transmission power of the preamble.
  • the second terminal device may perform random access according to the updated configuration information of the transmit power of the preamble. For example, the second terminal device may send the preamble according to the updated expected received power, and/or send the preamble according to the updated transmit power offset, and/or send the preamble according to the updated transmit power adjustment step .
  • the configuration information of the uplink timing advance includes at least one of the following information: uplink timing advance, the corresponding relationship between the uplink timing advance and the first parameter, and the first parameter includes at least one of the following information: random Access preamble, identification information of the target cell, signal quality of the target cell, signal quality of at least one beam in the target cell, order of signal quality of at least one beam in the target cell, location information of the terminal equipment, SSB threshold and SSB group that meets the threshold.
  • the configuration information of the uplink timing advance may include the correspondence between the uplink timing advance and the first parameter, and the first parameter may include at least one of the following information: the signal quality of the target cell, The signal quality of at least one beam in the target cell, the order of the signal quality of the at least one beam in the target cell, the location information of the terminal device, the threshold of the SSB, and the SSB group that meets the threshold.
  • all second terminal devices that need to access the target cell may use the uplink timing advance for random access.
  • the uplink timing advance may refer to the value of the uplink timing advance, or may refer to the value range of the uplink timing advance.
  • the second terminal device may randomly select one from the value range as the uplink timing advance.
  • the target cell base station When the target cell base station broadcasts the updated uplink timing advance configuration information, it may broadcast only the uplink timing advance, or may also broadcast the correspondence between the uplink timing advance and the first parameter.
  • the SSB may refer to the beam described above, and the threshold of the SSB may refer to the signal quality threshold of the beam. Different beams can set different thresholds.
  • the SSB group meeting the threshold may refer to a combination of beams meeting the threshold.
  • the second terminal device may monitor the system message to determine whether the target cell base station broadcasts the first configuration information. If the base station of the target cell is monitored to broadcast the first configuration information, the second terminal device may receive the first configuration information. After receiving the first configuration information, the second terminal device may update the previously received second configuration information to the first configuration information, that is, the second terminal device may replace the second configuration information with the first configuration information.
  • the first configuration information includes the configuration information of the uplink timing advance
  • the base station of the target cell has not previously broadcast the uplink timing advance, it means that the first configuration information is broadcast to the terminal device by the base station of the target cell for the first time, then the second terminal device
  • the first configuration information can be directly stored.
  • the second terminal device may continue to use the second configuration information to perform the current random access process. If the current random access process fails, the terminal device can use the first configuration information to re-initiate random access.
  • the second terminal device can stop using the second configuration information for random access and use the first configuration information for random access. Random access.
  • the second terminal device can continue to use the second configuration information for random access until the random access is successful .
  • the second configuration information is mainly applicable to terminal devices that have not yet started random access.
  • the second terminal device can use the updated initial transmit power of the preamble Send the preamble; if the configuration information of the transmit power of the preamble includes the updated power climb step, the second terminal device can use the updated power climb step to climb, and perform random access with the increased power.
  • the first configuration information includes uplink timing advance configuration information, and the second terminal device may send the first message in the random access process to the target cell base station according to the uplink timing advance configuration information.
  • the configuration information of the uplink timing advance may include the correspondence between the uplink timing advance and the first parameter, and the second terminal device may send the first in the random access process to the target cell base station according to the configuration information of the uplink timing advance.
  • the message may include: the second terminal device determines the target uplink timing advance to be used by the second terminal device according to the configuration information of the uplink timing advance and the first parameter obtained by measurement, where the first parameter may include At least one of the following information: beam information of the target cell, signal quality of the target cell, signal quality of at least one beam in the target cell, position information of the second terminal device; the second terminal device uses the target uplink timing advance direction
  • the base station of the target cell sends the first message in the random access process.
  • the upstream time advance is taken as an example to describe the random access process of the second terminal device.
  • the configuration information broadcast by the base station of the target cell includes the configuration information of the uplink timing advance.
  • the second terminal device may use the uplink timing advance to send the preamble. If the second terminal device is performing random access, the second terminal device can stop the current random access and resend the preamble with the uplink timing advance; or the second terminal device can continue the current random access, And after the current random access fails, the preamble is retransmitted with the uplink timing advance.
  • the target cell base station may broadcast uplink timing advances corresponding to different rankings.
  • the second terminal device can measure and sort the signal quality of the at least one beam, and determine the current position based on the determined sorting result and the uplink timing advances corresponding to different sorts broadcast by the target cell base station The target uplink time advance. Furthermore, the second terminal device may use the determined target uplink timing advance to send the preamble to the target cell base station.
  • the target cell base station can configure the SSB threshold and the SSB group meeting the threshold, and different SSB groups correspond to different uplink timing advances.
  • the second terminal device can measure the SSB (or called beam) of the target cell, and determine the SSB group that meets the threshold. Then, the second terminal device may determine the target uplink timing advance to be used at the current location according to the determined SSB group and the corresponding relationship between the different SSB groups broadcast by the target cell base station and the uplink timing advance. Furthermore, the second terminal device may use the determined target uplink timing advance to send the preamble to the target cell base station.
  • the SSB group determined by the second terminal device is not necessarily the same as the SSB group broadcast by the base station of the target cell.
  • the SSB group determined by the second terminal device is called the first SSB group
  • the SSB group broadcast by the target cell base station is called the second SSB group.
  • the uplink timing advance corresponding to the second SSB group may be determined as the target uplink timing advance that the second terminal device needs to use.
  • the uplink timing advance corresponding to the second SSB group may be determined as the target uplink timing advance that the second terminal device needs to use. For another example, if the number of identical SSBs in the first SSB group and the second SSB group exceeds a preset threshold, the uplink timing advance corresponding to the second SSB group may be determined as the target uplink timing advance that the second terminal device needs to use the amount.
  • the manner in which the second terminal device determines the target uplink timing advance may be similar to the manner described above, and details are not described herein again.
  • the second terminal device may use the selected uplink timing advance to send the first message in the random access process, or in other words, the second terminal device may use the selected uplink timing advance to send the random access preamble.
  • the base station of the target cell may also broadcast the corresponding relationship between the first parameter and the transmission power of the preamble.
  • the second terminal device can select different transmission powers according to different positions to send the preamble.
  • the corresponding relationship between the target cell base station broadcasting the first parameter and the transmission power of the preamble is similar to the way the target cell base station broadcasts the first parameter and uplink time advance, and the second terminal device determines the target transmission power in the same manner as the second
  • the method for the terminal device to determine the uplink timing advance is also similar, which will not be repeated here.
  • FIG. 9 is a schematic block diagram of a terminal device according to an embodiment of the present application.
  • the terminal device may be any terminal device described above.
  • the terminal device may be the first terminal device described above.
  • the terminal device 900 in FIG. 9 includes a communication unit 910, where:
  • the communication unit 910 is configured to initiate random access to a target cell base station; and send first information to the target cell base station, where the first information includes at least one of the following information: power parameters and uplink for transmitting the preamble Time advance.
  • the first information further includes at least one of the following information: a preamble used by the terminal device for random access, identification information of the target cell, signal quality of the target cell, and The beam index, the signal quality of at least one beam in the target cell, the order of the signal quality of the at least one beam in the target cell, and the location information of the terminal device.
  • a preamble used by the terminal device for random access identification information of the target cell, signal quality of the target cell, and The beam index, the signal quality of at least one beam in the target cell, the order of the signal quality of the at least one beam in the target cell, and the location information of the terminal device.
  • the signal quality of the target cell includes at least one of the following information: the reference signal received power RSRP of the target cell, the reference signal received quality RSRQ of the target cell, and the signal and interference of the target cell Add noise ratio SINR.
  • the signal quality of the at least one beam in the target cell includes at least one of the following information: the RSRP of the at least one beam and the index of the at least one beam, the RSRQ of the at least one beam and the The index of the at least one beam, the SINR of the at least one beam, and the index of the at least one beam.
  • the power parameter used to send the preamble includes the number of power climbs in the random access process and/or the power level of the terminal device.
  • the first information includes power parameters used to send the preamble, and the first information further includes at least one of the following information: the signal quality of the target cell, and at least one of the target cells The signal quality of the beam, the ordering of the signal quality of at least one beam in the target cell, and the location information of the terminal device.
  • the first information is sent by the terminal device to the target cell base station after the random access is completed.
  • the first information includes the uplink timing advance, and the first information further includes at least one of the following information: the signal quality of the target cell, the signal quality of the at least one beam in the target cell Signal quality, ranking of signal quality of at least one beam in the target cell and location information of the terminal device.
  • the communication unit 910 is configured to send the first information to the target cell base station when the target cell base station supports a function of optimizing parameters for random access.
  • the communication unit 910 is configured to: receive a request message sent by the target cell base station, where the request message is used to instruct the terminal device to send the first information to the target cell base station; A request message to send the first information to the target cell base station.
  • the communication unit 910 is further configured to: after successful random access, send first indication information to the target cell base station, where the first indication information is used to indicate that the terminal device records the First information; receiving a request message sent by the target cell base station based on the first indication information.
  • the communication unit 910 is configured to: receive second indication information sent by the target cell base station, where the second indication information is used to indicate the target cell base station's ability to support optimization of parameters for random access ; Based on the second indication information, send the first indication information to the target cell base station.
  • the second indication information is broadcast by the target cell base station through a system message.
  • the first indication information is carried in at least one of the following messages: a radio resource control RRC connection establishment complete message, an RRC re-establishment complete message, and an RRC connection recovery complete message.
  • the terminal device further includes a processing unit 920 configured to: record the first information during the random access process; or record the first information after the random access is completed .
  • a processing unit 920 configured to: record the first information during the random access process; or record the first information after the random access is completed .
  • the first information is recorded at at least one of the following moments: the moment when the terminal device receives the random access response message sent by the target cell base station, the terminal device sends the preamble Time, the time when the random access of the terminal device is completed.
  • the random access initiated by the terminal device to the target cell base station is a contention-based random access
  • the moment when the terminal device succeeds in random access includes the time when the terminal device receives a successful contention resolution message. time.
  • the random access initiated by the terminal device to the target cell base station is non-contention based random access
  • the moment when the terminal device succeeds in random access includes the terminal device receiving a random access response message The moment.
  • the uplink timing advance is obtained from a random access response message.
  • the first information is used for the target cell base station to update or configure the uplink timing advance and/or the transmit power of the preamble.
  • FIG. 10 is a schematic block diagram of a terminal device according to an embodiment of the present application.
  • the terminal device may be any terminal device described above.
  • the terminal device may be the second terminal device described above.
  • the terminal device 1000 in FIG. 10 includes a communication unit 1010 and a processing unit 1020, where:
  • the communication unit 1010 is configured to receive updated first configuration information sent by the base station of the target cell before the random access is successful, the first configuration information includes at least one of the following information: configuration information of the transmit power of the preamble , Configuration information of the uplink timing advance; the processing unit 1020 is configured to perform random access according to the updated first configuration information.
  • the configuration information of the transmission power of the preamble includes at least one of the following information: the expected received power of the preamble, the transmission power offset of the preamble, and the adjustment step size of the transmission power of the preamble.
  • the configuration information of the uplink timing advance includes the uplink timing advance and/or the correspondence between the uplink timing advance and the first parameter
  • the first parameter includes at least one of the following information: random Access preamble, identification information of the target cell, signal quality of the target cell, signal quality of at least one beam in the target cell, order of signal quality of at least one beam in the target cell, location information of the terminal equipment, synchronization signal block SSB The threshold and the SSB group that meets the threshold.
  • the signal quality of the target cell includes at least one of the following information: the reference signal received power RSRP of the target cell, the reference signal received quality RSRQ of the target cell, and the signal and interference of the target cell Add noise ratio SINR.
  • the signal quality of the at least one beam in the target cell includes at least one of the following information: the RSRP of the at least one beam and the index of the at least one beam, the RSRQ of the at least one beam and the The index of the at least one beam, the SINR of the at least one beam, and the index of the at least one beam.
  • the processing unit 1020 is configured to: update the stored second configuration information to the first configuration information, where the second configuration information is before the terminal device receives the first configuration information, The configuration information sent by the base station of the target cell.
  • the first configuration information is received when the terminal device is using the second configuration information for random access, and the processing unit 1020 is configured to: control the terminal device to stop using the terminal device.
  • the second configuration information performs random access; the terminal device is controlled to use the first configuration information to perform random access.
  • the first configuration information is received when the terminal device is using the second configuration information for random access, and the processing unit 1020 is configured to: control the terminal device to continue to use the terminal device.
  • the second configuration information performs random access; after the random access using the second configuration information fails, the terminal device is controlled to use the first configuration information to perform random access.
  • the first configuration information includes updated configuration information of the transmit power of the preamble
  • the communication unit 1010 is configured to use the updated configuration information of the transmit power of the preamble to perform random access.
  • the first configuration information includes uplink timing advance configuration information
  • the communication unit 1010 is configured to: according to the uplink timing advance configuration information, send a random access process to the target cell base station The first message.
  • the configuration information of the uplink timing advance includes the corresponding relationship between the uplink timing advance and the first parameter
  • the processing unit 1020 is configured to: according to the configuration information of the uplink timing advance, and all measured values
  • the first parameter determines the target uplink timing advance that the terminal device needs to use, and the first parameter includes at least one of the following information: beam information of the target cell, signal quality of the target cell, and at least one of the target cells One beam signal quality, the location information of the terminal device;
  • the communication unit 1010 is configured to: use the target uplink timing advance to send the first message in the random access process to the target cell base station.
  • the updated first configuration information is received by the terminal device before receiving the random access response message.
  • FIG. 11 is a schematic block diagram of a network device according to an embodiment of the present application.
  • the network device may be any terminal device described above.
  • the network device may be the target cell base station described above.
  • the network device 1100 in FIG. 11 includes a communication unit 1110 and a processing unit 1120, where:
  • the communication unit 1110 is configured to obtain first information, where the first information includes at least one of the following information: a power parameter used to send the preamble and an uplink timing advance; the processing unit 1120 is configured to Information, update or configure the configuration information of the transmit power of the preamble in the random access process and/or the configuration information of the uplink timing advance.
  • the first information further includes at least one of the following information: the first information further includes at least one of the following information: a preamble used by the terminal device for random access, and information about the target cell Identification information, the signal quality of the target cell, the signal quality of at least one beam in the target cell, the order of the signal quality of the at least one beam in the target cell, and the location information of the terminal device.
  • the first information further includes at least one of the following information: a preamble used by the terminal device for random access, and information about the target cell Identification information, the signal quality of the target cell, the signal quality of at least one beam in the target cell, the order of the signal quality of the at least one beam in the target cell, and the location information of the terminal device.
  • the signal quality of the target cell includes at least one of the following information: the reference signal received power RSRP of the target cell, the reference signal received quality RSRQ of the target cell, and the signal and interference of the target cell Add noise ratio SINR.
  • the signal quality of the at least one beam in the target cell includes at least one of the following information: the RSRP of the at least one beam and the index of the at least one beam, the RSRQ of the at least one beam and the The index of the at least one beam, the SINR of the at least one beam, and the index of the at least one beam.
  • the configuration information of the transmission power of the preamble includes at least one of the following information: the expected received power of the preamble, the transmission power offset of the preamble, and the adjustment step size of the transmission power of the preamble.
  • the configuration information of the uplink timing advance includes the uplink timing advance and/or the correspondence between the uplink timing advance and the first parameter
  • the first parameter includes at least one of the following information: random Access preamble, identification information of the target cell, signal quality of the target cell, signal quality of at least one beam in the target cell, order of signal quality of at least one beam in the target cell, location information of the terminal equipment, synchronization signal block SSB The threshold and the SSB group that meets the threshold.
  • the communication unit 1110 is configured to: receive first indication information sent by a terminal device, where the first indication information is used to indicate that the first information is recorded in the terminal device; and send to the terminal device A request message, where the request message is used to instruct the terminal device to send the first information to the target cell base station.
  • the first indication information is carried in at least one of the following messages: a radio resource control RRC connection establishment complete message, an RRC re-establishment complete message, and an RRC connection recovery complete message.
  • the communication unit 1110 is further configured to broadcast the updated preamble transmission power configuration information and/or uplink timing advance configuration information through a system message.
  • the communication unit 1110 is further configured to: broadcast second indication information, where the second indication information is used to indicate that the target cell base station supports the function of optimizing parameters in the random access process, and the second indication The information is used to instruct the terminal equipment to send the first information to the target cell base station.
  • the communication unit 1110 is further configured to broadcast the updated or configured preamble transmit power configuration information and/or uplink timing advance configuration information through a system message.
  • FIG. 12 is a schematic structural diagram of a communication device 1200 according to an embodiment of the present application.
  • the communication device 1200 shown in FIG. 12 includes a processor 1210, and the processor 1210 can call and run a computer program from a memory to implement the method in the embodiment of the present application.
  • the communication device 1200 may further include a memory 1220.
  • the processor 1210 can call and run a computer program from the memory 1220 to implement the method in the embodiment of the present application.
  • the memory 1220 may be a separate device independent of the processor 1210, or it may be integrated in the processor 1210.
  • the communication device 1200 may further include a transceiver 1230, and the processor 1210 may control the transceiver 1230 to communicate with other devices. Specifically, it may send information or data to other devices, or receive other devices. Information or data sent by the device.
  • the transceiver 1230 may include a transmitter and a receiver.
  • the transceiver 1230 may further include an antenna, and the number of antennas may be one or more.
  • the communication device 1200 may specifically be a network device of an embodiment of the application, and the communication device 1200 may implement the corresponding process implemented by the network device in each method of the embodiment of the application. For brevity, details are not repeated here .
  • the communication device 1200 may specifically be a mobile terminal/terminal device of an embodiment of the application, and the communication device 1200 may implement the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiments of the application, specifically
  • the communication device 1200 can implement the corresponding processes implemented by the first terminal device and/or the second terminal device in each method in the embodiments of the present application, and for the sake of brevity, details are not described herein again.
  • Fig. 13 is a schematic structural diagram of a device according to an embodiment of the present application.
  • the apparatus 1300 shown in FIG. 13 includes a processor 1310, and the processor 1310 can call and run a computer program from a memory to implement the method in the embodiment of the present application.
  • the apparatus 1300 may further include a memory 1320.
  • the processor 1310 can call and run a computer program from the memory 1320 to implement the method in the embodiment of the present application.
  • the memory 1320 may be a separate device independent of the processor 1313, or may be integrated in the processor 1310.
  • the device 1300 may further include an input interface 1330.
  • the processor 1310 can control the input interface 1330 to communicate with other devices or devices, and specifically, can obtain information or data sent by other devices or devices.
  • the device 1300 may further include an output interface 1340.
  • the processor 1310 can control the output interface 1340 to communicate with other devices or devices, specifically, can output information or data to other devices or devices.
  • the device can be applied to the network equipment in the embodiments of the present application, and the device can implement the corresponding processes implemented by the network equipment in the various methods of the embodiments of the present application.
  • the device can implement the corresponding processes implemented by the network equipment in the various methods of the embodiments of the present application.
  • details are not described herein again.
  • the device can be applied to the mobile terminal/terminal device in the embodiment of this application, and the device can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of this application.
  • the device can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of this application.
  • the device can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of this application.
  • the device mentioned in the embodiments of the present application may be a chip, and the chip may also be referred to as a system-on-chip, a system-on-chip, a system-on-chip, or a system-on-chip.
  • FIG. 14 is a schematic block diagram of a communication system 1400 according to an embodiment of the present application. As shown in FIG. 14, the communication system 1400 includes a terminal device 1410 and a network device 1420.
  • the terminal device 1410 can be used to implement the corresponding function implemented by the terminal device in the above method
  • the network device 1420 can be used to implement the corresponding function implemented by the network device in the above method. For brevity, it will not be repeated here. .
  • the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capability.
  • the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
  • the aforementioned processor may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP Digital Signal Processor
  • ASIC application specific integrated circuit
  • FPGA ready-made programmable gate array
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • the memory in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data Rate SDRAM DDR SDRAM
  • ESDRAM enhanced synchronous dynamic random access memory
  • Synchlink DRAM SLDRAM
  • DR RAM Direct Rambus RAM
  • the memory in the embodiment of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is to say, the memory in the embodiment of the present application is intended to include but not limited to these and any other suitable types of memory.
  • the embodiment of the present application also provides a computer-readable storage medium for storing computer programs.
  • the computer-readable storage medium may be applied to the network device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer-readable storage medium can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application ,
  • the computer program enables the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application ,
  • I will not repeat it here.
  • the embodiments of the present application also provide a computer program product, including computer program instructions.
  • the computer program product may be applied to the network device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program product can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, For brevity, I won't repeat them here.
  • the embodiment of the present application also provides a computer program.
  • the computer program can be applied to the network device in the embodiment of the present application.
  • the computer program runs on the computer, the computer is caused to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • I won’t repeat it here.
  • the computer program can be applied to the mobile terminal/terminal device in the embodiment of the present application.
  • the computer program runs on the computer, the computer executes each method in the embodiment of the present application. For the sake of brevity, the corresponding process will not be repeated here.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • each unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of this application essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory,) ROM, random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code .

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Abstract

本申请提供了一种用于随机接入的方法及设备，能够降低终端设备在随机接入过程中的时延，以及提高随机接入过程中的第一条消息的可靠性。该方法包括：终端设备向目标小区基站发起随机接入；所述终端设备向所述目标小区基站发送第一信息，所述第一信息包括用于发送前导码的功率参数和上行时间提前量中的至少一种。

Description

用于随机接入的方法及设备 技术领域
本申请涉及通信领域，并且更具体地，涉及一种用于随机接入的方法及设备。
背景技术
终端设备在进行随机接入时，可以使用目标小区基站配置的功率参数进行随机接入。如终端设备可以使用配置的功率参数发送前导码，但是网络设备配置的功率参数通常不会太高，终端设备需要进行多次功率攀升后才能成功发送前导码，但是对于对时延要求比较高的终端设备来说，功率攀升次数过多会影响数据传输的可靠性。
发明内容
本申请提供一种用于随机接入的方法及设备，能够降低终端设备在随机接入过程中的时延，以及提高随机接入过程中的第一条消息的可靠性。
第一方面，提供了一种用于随机机接入的方法，包括：终端设备向目标小区基站发起随机接入；所述终端设备向所述目标小区基站发送第一信息，所述第一信息包括用于发送前导码的功率参数和上行时间提前量中的至少一种。
第二方面，提供了一种用于随机机接入的方法，包括：终端设备接收目标小区基站发送的更新后的第一配置信息，所述第一配置信息包括以下信息中的至少一种：前导码的发送功率的配置信息，上行时间提前量的配置信息；所述终端设备根据所述更新后的第一配置信息进行随机接入。
第三方面，提供了一种用于随机机接入的方法，包括：目标小区基站获取第一信息，所述第一信息包括以下信息中的至少一种：用于发送前导码的功率参数和上行时间提前量；所述目标小区基站根据所述第一信息，更新或配置随机接入过程中的前导码的发送功率的配置信息和/或上行时间提前量的配置信息。
第四方面，提供一种终端设备，用于执行上述第一方面或第一方面的任意可选的实现方式中所述的方法。具体地，该终端设备包括用于执行上述第一方面或第一方面的任意可选的实现方式中所述的方法的功能模块。
第五方面，提供了一种终端设备，用于执行上述第二方面或第二方面的任意可选的实现方式中所述的方法。具体地，该网络设备包括用于执行上述第二方面或第二方面的任意可选的实现方式中所述的方法的功能模块。
第六方面，提供了一种网络设备，用于执行上述第三方面或第三方面的任意可选的实现方式中所述的方法。具体地，该网络设备包括用于执行上述第三方面或第三方面的任意可选的实现方式中所述的方法的功能模块。
第七方面，提供了一种终端设备，包括处理器和存储器。该存储器用于存储计算机程序，该处理器用于调用并运行该存储器中存储的计算机程序，执行上述第一方面或其各实现方式中的方法。
第八方面，提供了一种终端设备，包括处理器和存储器。该存储器用于存储计算机程序，该处理器用于调用并运行该存储器中存储的计算机程序，执行上述第二方面或其各实现方式中的方法。
第九方面，提供了一种网络设备，包括处理器和存储器。该存储器用于存储计算机程序，该处理器用于调用并运行该存储器中存储的计算机程序，执行上述第三方面或其各实现方式中的方法。
第十方面，提供了一种装置，用于实现上述第一方面或第一方面的任意可能的实现方式中的方法。具体地，该装置包括处理器，用于从存储器中调用并运行计算机程序，使得安装有该装置的设备执行如上述第一方面或第一方面的任意可能的实现方式中的方法。
第十一方面，提供了一种装置，用于实现上述第二方面或第二方面的任意可能的实现方式中的方法。具体地，该装置包括处理器，用于从存储器中调用并运行计算机程序，使得安装有该装置的设备执行如上述第二方面或第二方面的任意可能的实现方式中的方法。
第十二方面，提供了一种装置，用于实现上述第三方面或第三方面的任意可能的实现方式中的方法。具体地，该装置包括处理器，用于从存储器中调用并运行计算机程序，使得安装有该装置的设备执行如上述第三方面或第三方面的任意可能的实现方式中的方法。
第十三方面，提供了一种计算机可读存储介质，用于存储计算机程序，该计算机程序使得计算机执行上述第一方面或第一方面的任意可能的实现方式中的方法。
第十四方面，提供了一种计算机可读存储介质，用于存储计算机程序，该计算机程序使得计算机执行上述第二方面或第二方面的任意可能的实现方式中的方法。
第十五方面，提供了一种计算机可读存储介质，用于存储计算机程序，该计算机程序使得计算机执行上述第三方面或第三方面的任意可能的实现方式中的方法。
第十六方面，提供了一种计算机程序产品，包括计算机程序指令，该计算机程序指令使得计算机执行上述第一方面或第一方面的任意可能的实现方式中的方法。
第十七方面，提供了一种计算机程序产品，包括计算机程序指令，该计算机程序指令使得计算机执行上述第二方面或第二方面的任意可能的实现方式中的方法。
第十八方面，提供了一种计算机程序产品，包括计算机程序指令，该计算机程序指令使得计算机执行上述第三方面或第三方面的任意可能的实现方式中的方法。
第十九方面，提供了一种计算机程序，当其在计算机上运行时，使得计算机执行上述第一方面或第一方面的任意可能的实现方式中的方法。
第二十方面，提供了一种计算机程序，当其在计算机上运行时，使得计算机执行上述第二方面或第二方面的任意可能的实现方式中的方法。
第二十一方面，提供了一种计算机程序，当其在计算机上运行时，使得计算机执行上述第三方面或第三方面的任意可能的实现方式中的方法。
本申请提供的技术方案，终端设备可以将在随机接入过程中的发送前导码的功率参数和与位置等相关的参数，以及上行时间提前量与位置等相关的参数上报给目标小区基站，以便于目标小区基站对功率参数以及上行时间提前量进行优化，这样能够降低随机接入过程中的时延以及以提高随机接入过程中的数据传输的可靠性。
附图说明
图1是本申请实施例应用的无线通信系统的示意图。
图2是本申请实施例提供的一种基于竞争的随机接入过程的示意图。
图3是本申请实施例提供的一种基于非竞争的随机接入过程的示意图。
图4是本申请实施例提供的一种RAR格式的结构示意图。
图5是本申请实施例提供的另一种RAR格式的结构示意图。
图6是本申请实施例提供的一种MAC PDU的结构示意图。
图7是本申请实施例提供的又一种RAR格式的结构示意图。
图8是本申请实施例提供的一种用于随机接入的方法的示意图。
图9是本申请实施例提供的一种终端设备的示意性框图。
图10是本申请实施例提供的另一种终端设备的示意性框图。
图11是本申请实施例提供的一种网络设备的示意性框图。
图12是本申请实施例提供的一种通信设备的示意性结构图。
图13是本申请实施例提供的一种装置的示意性结构图。
图14是本申请实施例提供的一种通信系统的示意性框图。
具体实施方式
图1是本申请实施例的系统100的示意图。
如图1所示，终端设备110与第一通信系统下的第一网络设备130和第二通信系统下的第二网络设备120相连，例如，该第一网络设备130为长期演进(Long Term Evolution，LTE)下的网络设备，该第二网络设备120为新空口(New Radio,NR)下的网络设备。
其中，该第一网络设备130和该第二网络设备120下可以包括多个小区。
应理解，图1是本申请实施例的通信系统的示例，本申请实施例不限于图1所示。
作为一个示例，本申请实施例适应的通信系统可以包括至少该第一通信系统下的多个网络设备和/或该第二通信系统下的多个网络设备。
例如，图1所示的系统100可以包括第一通信系统下的一个主网络设备和第二通信系统下的至少一个辅助网络设备。至少一个辅助网络设备分别与该一个主网络设备相连，构成多连接，并分别与终端设备110连接为其提供服务。具体地，终端设备110可以通过主网络设备和辅助网络设备同时建立连接。
可选地，终端设备110和主网络设备建立的连接为主连接，终端设备110与辅助网络设备建立的连接为辅连接。终端设备110的控制信令可以通过主连接进行传输，而终端设备110的数据可以通过主连接以及辅连接同时进行传输，也可以只通过辅连接进行传输。
作为又一示例，本申请实施例中的第一通信系统和第二通信系统不同，但对第一通信系统和该第二 通信系统的具体类别不作限定。
例如，该第一通信系统和该第二通信系统可以是各种通信系统，例如：全球移动通讯(Global System of Mobile communication，GSM)系统、码分多址(Code Division Multiple Access，CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)系统、通用分组无线业务(General Packet Radio Service，GPRS)、长期演进(Long Term Evolution，LTE)系统、LTE时分双工(Time Division Duplex，TDD)、通用移动通信系统(Universal Mobile Telecommunication System，UMTS)等。
所述主网络设备和所述辅助网络设备可以为任意接入网设备。
可选地，在一些实施例中，所述接入网设备可以是全球移动通讯(Global System of Mobile communication，GSM)系统或码分多址(Code Division Multiple Access，CDMA)中的基站(Base Transceiver Station，BTS)，也可以是宽带码分多址(Wideband Code Division Multiple Access，WCDMA)系统中的基站(NodeB，NB)，还可以是长期演进(Long Term Evolution，LTE)系统中的演进型基站(Evolutional Node B，eNB或eNodeB)。
可选地，所述接入网设备还可以是下一代无线接入网(Next Generation Radio Access Network，NG RAN)，或者是NR系统中的基站(gNB)，或者是云无线接入网络(Cloud Radio Access Network，CRAN)中的无线控制器，或者该接入网设备可以为中继站、接入点、车载设备、可穿戴设备，或者未来演进的公共陆地移动网络(Public Land Mobile Network，PLMN)中的网络设备等。
在图1所示的系统100中，以该第一网络设备130为主网络设备，以该第二网络设备120为辅助网络设备为例。
该第一网络设备130可以为LTE网络设备，该第二网络设备120可以为NR网络设备。或者该第一网络设备130可以为NR网络设备，第二网络设备120可以为LTE网络设备。或者该第一网络设备130和该第二网络设备120都可以为NR网络设备。或者该第一网络设备130可以为GSM网络设备，CDMA网络设备等，该第二网络设备120也可以为GSM网络设备，CDMA网络设备等。或者第一网络设备130可以是宏基站(Macrocell)，第二网络设备120可以为微蜂窝基站(Microcell)、微微蜂窝基站(Picocell)或者毫微微蜂窝基站(Femtocell)等。
可选地，所述终端设备110可以是任意终端设备，所述终端设备110包括但不限于：
经由有线线路连接，如经由公共交换电话网络(Public Switched Telephone Networks，PSTN)、数字用户线路(Digital Subscriber Line，DSL)、数字电缆、直接电缆连接；和/或另一数据连接/网络；和/或经由无线接口，如，针对蜂窝网络、无线局域网(Wireless Local Area Network，WLAN)、诸如DVB-H网络的数字电视网络、卫星网络、AM-FM广播发送器；和/或另一终端设备的被设置成接收/发送通信信号的装置；和/或物联网(Internet of Things，IoT)设备。被设置成通过无线接口通信的终端设备可以被称为“无线通信终端”、“无线终端”或“移动终端”。移动终端的示例包括但不限于卫星或蜂窝电话；可以组合蜂窝无线电电话与数据处理、传真以及数据通信能力的个人通信系统(Personal Communications System，PCS)终端；可以包括无线电电话、寻呼机、因特网/内联网接入、Web浏览器、记事簿、日历以及/或全球定位系统(Global Positioning System，GPS)接收器的PDA；以及常规膝上型和/或掌上型接收器或包括无线电电话收发器的其它电子装置。终端设备可以指接入终端、用户设备(User Equipment，UE)、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。接入终端可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol，SIP)电话、无线本地环路(Wireless Local Loop，WLL)站、个人数字处理(Personal Digital Assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备、5G网络中的终端设备或者未来演进的PLMN中的终端设备等。
应理解，本文中术语“系统”和“网络”在本文中常被可互换使用。
在本申请实施例中，网络设备为小区提供服务，终端设备通过该小区使用的传输资源(例如，频域资源，或者说，频谱资源)与网络设备进行通信，该小区可以是网络设备(例如基站)对应的小区，小区可以属于宏基站，也可以属于小小区(Small cell)对应的基站，这里的小小区可以包括：城市小区(Metro cell)、微小区(Micro cell)、微微小区(Pico cell)、毫微微小区(Femto cell)等，这些小小区具有覆盖范围小、发射功率低的特点，适用于提供高速率的数据传输服务。
应理解，本申请实施例的方法可以用于传输各种类型的业务。对于5G系统，本申请实施例的应用场景可以包括增强移动超带宽(enhance mobile broadband，eMBB)，低时延高可靠通信(ultra-reliable and low latency communications，URLLC)和大规模机器类通信(massive machine type communication，mMTC)。
例如eMBB，eMBB以用户获得多媒体内容、服务和数据为目标，其需求增长十分迅速。又例如 eMBB，由于eMBB可能部署在不同的场景中，便如室内，市区，农村等，其能力和需求的差别也比较大，因此可以结合具体的部署场景详细分析。又例如URLLC，URLLC的典型应用包括：工业自动化，电力自动化，远程医疗操作(手术)，交通安全保障等。mMTC的典型特点包括：高连接密度，小数据量，时延不敏感业务，模块的低成本和长使用寿命等。
本申请实施例对系统的部署模式不做具体限定。
例如，在NR早期部署时，完整的NR覆盖很难获取，所以典型的网络覆盖时广域的LTE覆盖和NR的孤岛覆盖的模式。而且大量的LTE部署在6GHz以下，可用于5G的6GHz以下的频谱很少。所以NR必须研究6GHz以上的频谱应用，而高频段覆盖有限、信号衰落快。同时为了保护移动运营商前期在LTE投资，提出了LTE和NR之间的紧连接(tight interworking)的工作模式，即多无线接入技术(radio access technology，RAT)双连接(Multi-RAT Dual Connectivity，MR-DC)模式。
又例如，NR的小区也可以独立部署。NR小区可以使用波束(beam)进行传输，一个小区中可以包括多个beam。
终端设备在获得与网络设备之间的无线资源控制(radio resource control，RRC)连接之前，需要进行随机接入过程，即向网络设备发起随机接入，在随机接入成功的情况下，才能取得与网络设备的RRC连接。终端设备与网络设备建立RRC连接之后，可以进行后续数据的传输。
触发终端设备进行随机接入的事件有多种，例如在终端设备的初始接入过程中；在终端设备的重建过程中；在终端设备有上行数据需要发送，但检测到上行失步的情况下；终端设备有上行数据需要发送，但没有调度请求(scheduling request，SR)资源的情况下；在终端设备需要进行小区切换的情况下；在基站有下行数据需要发送，但检测到上行失步的情况下。
本申请实施例对终端设备进行随机接入的方式不做具体些限定。例如，可以是基于竞争的随机接入，也可以是基于非竞争的随机接入。又例如，终端设备可以采用四步随机接入方式进行随机接入，也可以采用两步随机接入方式进行随机接入。
下面结合图2-图3，对随机接入过程进行描述。
图2是基于竞争的随机接入过程，该随机接入过程也可以成为四步随机接入过程。该过程可以包括步骤S210～S240。
S210、终端设备在随机接入信道向网络设备发送消息1(message1，MSG1)，该MSG1中包含随机接入前导码。其中，该MSG1可以是物理层消息。
终端设备在发送MSG1之前，可以选择发送的前导码，以及发送前导码的物理随机接入信道(random access channel，PRACH)资源。通常，一个小区中可用于终端设备选择的前导码可以有64个，每个前导码的索引为0～63中的整数。终端设备可以从该64个前导码中选择一个发送给网络设备。
S220、网络设备收到MSG1之后，可以在下行共享信道(downlink share channel，DL-SCH)发送MSG2，其中，MSG2可以为随机接入响应(Random Access Response，RAR)。其中，该MSG2可以为媒体接入控制(media access control，MAC)层消息。
网络设备可以根据终端设备发送前导码的PRACH资源计算用于加扰MSG2的随机接入无线网络临时标识(random access radio network temporary identifier，RA-RNTI)。
其中，RAR响应中携带了上行传输的时间提前量(timeing advance，TA)调整和可以使用的上行资源信息以及临时小区无线网络临时标识(temporary cell radio network temporary identifier，T-CRNTI)，也即临时CRNTI。
可选地，RAR响应可以由网络设备的MAC层产生。一条MSG2可以同时对应多个终端设备的随机接入请求响应。
S230中，终端设备在接收到MSG2后，可以根据发送前导码的PRACH资源确定加扰MSG2的RA-RNTI，并采用该RA-RNTI解码MSG2。如果终端设备解码成功，表示该MSG2为属于自己的RAR消息。然后终端设备可以在该MSG2指定的上行资源中发送消息3(message3，MSG3)，该MSG3携带终端设备特定的RNTI。其中，该MSG3可以为RRC层消息。
在步骤240中，网络设备在接收到MSG3之后，可以向终端设备发送MSG4消息。其中，该MSG4中包括竞争解决消息以及网络设备为终端设备分配的上行传输资源。其中，该MSG4可以为MAC层消息。
终端设备接收到MSG4后，可以检测在MSG3发送的特定的RNTI是否包含在网络设备发送的竞争解决消息中。若包含，则表明终端设备随机接入过程成功，否则认为随机过程失败。随机接入过程失败后，终端设备需要再次从第一步开始发起随机接入过程。
可选地，MSG1和MSG2可以不使用HARQ机制，而MSG3和MSG4可以使用HARQ机制。
一次随机接入尝试失败，终端设备还可以发起下一次随机接入尝试，直至达到网络侧允许的最大重 传次数和/或最大重传时间。
终端设备一般是通过向网络设备发送前导码来进行随机接入的。如果终端设备在第一次发送前导码后，如果当前的随机接入失败，则终端设备可以向网络设备第二次发送随机接入的前导码，该第二次前导码的发送功率可以是第一次前导码的发送功率经过功率攀升之后的发送功率。该功率攀升的步长可以是网络设备配置的，或者也可以是预配置在终端设备中的。
图3是基于非竞争的随机接入过程，该过程可以包括步骤S310～S330。
S310、网络设备向终端设备发送MSG0，该MSG0可以包括前导码配置消息，用于指示随机接入的前导码。该MSG0可以为物理层消息。
S320、终端设备向网络设备发送MSG 1，该MSG1包括S310中的随机接入前导码。该MSG1可以为物理层消息。
S330、网络设备向终端设备发送MSG2，该MSG2可以为随机接入响应消息。该MSG2可以为MAC层消息。
在基于非竞争的随机接入过程中，终端设备可以通过RRC信令和/或PDCCH信令来获取非竞争随机接入的资源，并在该非竞争随机接入资源上进行随机接入。
RAR的MAC层数据格式可以如图4-图7所示。
MAC RAR可以承载在MAC协议数据单元(protocol data unit，PDU)中，一个MAC PDU在结构上可以包括三部分，一部分是MAC头，该MAC头的大小可变；一部分是RAR负载，该RAR负载中可以包括1个或多个MAC RAR；另一部分是填充(padding)信息，该padding信息是可选项。
一个MAC头可以包括一个或多个MAC子头。MAC头可以包括两种类型的子头，如图4和图5所示，图4和图5示出的是两种类型的MAC子头的结构示意图。这两种类型的子头可以由类型字段“T”进行区分。T＝0可以用于指示接下来呈现的是随机接入回退指示“BI”，如图4所示，该BI可用于指示重传MSG1的回退时间。T＝1可以指示接下来呈现的是随机接入前导码标识(random access preamble identifier，RAPID)，如图5所示。
在MAC子头的字段中，字段“E”表示扩展域(extension field)，用于指示后续是否还有MAC子头。当E＝1时，表示后续还有MAC子头，当E＝0时，表示后续不再有MAC子头。字段“T”表示类型域(type field)，用于指示接下来呈现的是“BI”还是“RAPID”。当T＝1时，表示接下来呈现的是RAPID字段；当T＝0时，表示接下来呈现的是BI字段。其中，RAPID为网络设备响应接收到的MSG1中的前导码，该RAPID的值可以为终端设备向网络设备发送的前导码的值。字段“BI”表示回退指示(backoff indicator)，用于指示重传MSG1的回退时间。
图6示出的是一种MAC PDU中包括MAC RAR的结构示意图，图6所示的是MAC头包括多个MAC子头的情况，当然，一个MAC头也可以包括一个MAC子头。
若某个RAR是RAPID类型的，那么该RAR的结构可以如图7所示。其中，字段“R”为保留保留比特位(reserved bit)，固定填为0。该RAR中可以包括以下信息中的至少一种：上行时间提前量，上行授权(uplink grant，UL grant)信息，临时C-RNTI。上行授权信息用于指示所述终端设备发送MSG可使用的上行资源。上行时间提前量用于调整所述终端设备发送上行数据的上行时序。临时C-RNTI用于加扰MSG4中的PDCCH。
终端设备发送前导码后，网络设备会存在接收不到前导码的情况。网络设备接收不到前导码可能是由于终端设备发送前导码的发射功率较低造成的，终端设备在预配置的时间内没有接收到RAR后，需要进行功率攀升，以提高前导码的发射功率，以提高之后的发射功率发送前导码。
终端设备每次发送前导码的功率可以通过以下公式进行计算：
前导码的发射功率＝前导码的期望接收功率+功率偏移量+(前导码的攀升次数-1)*功率攀升步长。
前导码的期望接收功率表示目标小区基站期望接收到的功率，也就是说，终端设备向目标小区基站发送前导码之后，目标小区基站期望接收到的前导码的功率。
功率偏移量与前导码的格式有关，如表1所示。前导码的格式为0和1时，功率偏移量为0dB；前导码的格式为2和3时，功率偏移量为-3dB；前导码的格式为4时，功率偏移量为8dB。
表1
前导码格式 功率偏移量
0 0dB
1 0dB
2 -3dB
3 -3dB
4 8dB
前导码的期望接收功率、功率偏移量和功率攀升步长可以是网络设备配置的。例如，网络设备可以广播前导码的发送功率的配置信息，该配置信息中可以包括期望接收功率、功率偏移量和功率攀升步长。终端设备在第一次发送前导码时，可以根据期望接收功率和功率偏移量确定发射功率，在第一次发送前导码失败后，终端设备可以按照网络设备配置的功率攀升步长进行功率攀升，并且以攀升之后的功率发送前导码。重复上述步骤，直至终端设备接收到网络设备发送的RAR。
网络设备广播的功率配置信息并不一定适合终端设备，如终端设备可能需要经过多次的功率攀升之后才能成功发送前导码，这就增加了终端设备随机接入过程中的时延，不利于终端设备快速进入网络开展业务。但是，网络设备向终端设备配置的期望接收功率也不能太高，过高会造成上行干扰。因此，网络设备如何给终端设备配置前导码的发送功率，以降低终端设备随机接入过程中的时延成为亟需解决的问题。
另外，终端设备通常只有在接收到网络设备发送的RAR之后，才能知道上行时间提前量，然后才能以该时间提前量传输数据。因此，终端设备发送前导码时，并不知道上行时间提前量，这会导致前导码的可靠性降低。因此，如何提高终端设备发送前导码的可靠性成为亟需解决的问题。
本申请实施例提供一种用于随机接入的方法，能够降低终端设备随机接入过程的时延，并且能够提高终端设备发送前导码的可靠性。如图8所示，该方法包括步骤S810～S820。
S810、第一终端设备向目标小区基站发起随机接入。
第一终端设备在与目标小区基站建立RRC连接之前，需要向目标小区基站发起随机接入，在随机接入成功后，才能建立与目标小区基站之间的连接。
该目标小区基站可以指上文描述的网络设备。目标小区基站可以指目标小区所在的基站，目标小区可以指终端设备希望接入的小区。一个基站可以包括一个目标小区，也可以包括多个目标小区。
S820、第一终端设备向目标小区基站发送第一信息。该第一信息包括用于发送前导码的功率参数和上行提前量中的至少一种，该第一信息还可以包括以下信息中的至少一种。
该第一信息还可以包括以下信息中的至少一种：第一终端设备进行随机接入使用的前导码，目标小区的标识信息，目标小区的信号质量，第一终端设备使用的波束索引，目标小区中的至少一个波束的信号质量，目标小区中的至少一个波束的信号质量的排序和终端设备的位置信息。
第一终端设备上报第一信息可以是在随机接入过程中向目标小区基站上报，也可以是在随机接入完成后，处于RRC连接状态时向目标小区基站上报的。例如，第一终端设备可以响应于随机接入完成，向目标小区基站上报第一信息。
发送前导码的功率参数可以包括第一终端设备在随机接入过程中的功率攀升次数和/或第一终端设备的功率等级。
功率攀升次数在一定程度上能够反映第一终端设备随机接入过程中的时延，功率攀升次数越多，表示第一终端设备随机接入过程中的时延越长。目标小区基站可以根据功率攀升次数对前导码的发送功率进行优化。
第一终端设备的功率等级可以表示第一终端设备最后一次发射前导码采用的功率，目标小区基站可以根据期望接收功率以及第一终端设备最后一次发射前导码采用的功率，对前导码的发射功率进行优化。如果期望接收功率和最后一次的发射功率之间的差异较大，表示目标小区基站需要对前导码的发送功率进行优化。
由于功率攀升的步长是目标小区基站配置给终端设备的，终端设备可以不上报功率攀升的步长。当然，终端设备也可以将功率攀升的步长也上报给目标小区基站。
上行时间提前量可以是第一终端设备从目标小区基站发送的RAR中获得的。由于上行时间提前量是目标小区基站发送给第一终端设备的，则第一终端设备也可以不需要向目标小区基站上报上行提前量，仅需将自己的标识和/或位置信息等上报给目标小区基站。
目标小区的信号质量包括以下信息中的至少一种：目标小区的参考信号接收功率(reference signal receiving power，RSRP)，目标小区的参考信号接收质量(referencesignal received quality，RSRQ)和目标小区的信号与干扰加噪声比(signal-to-interference-and-noise-ratio，SINR)。
目标小区中的至少一个波束的信号质量可以包括以下信息中的至少一种：至少一个波束的RSRP以及至少一个波束的波束索引，至少一个波束的RSRQ以及至少一个波束的波束索引和至少一个波束的SINR以及至少一个波束的波束索引。也就是说，第一终端设备在上报波束的信号质量时，也会将波束的索引一同上报给目标小区基站，以便于目标小区基站确定第一终端设备上报的波束信号质量对应的是哪个波束。
该至少一个波束可以指目标小区中的所有波束，也可以指目标小区中的部分波束。例如，目标小区 中有10个波束，第一终端设备可以将该10个波束的信号质量都上报给目标小区基站，或者，第一终端设备也可以仅对其中5个波束进行测量，并将该5个波束的信号质量上报给目标小区基站。
目标小区的信号质量可以是根据目标小区中的至少一个波束的信号质量确定的，如目标小区的信号质量可以是将目标小区中的至少一个波束的信号质量进行平均得到的。
目标小区中至少一个波束的信号质量的排序，可以指第一终端设备可以将测得的至少一个波束的信号质量按照从高到低，或者从低到高的方式进行排序，并将排序后的至少一个波束的顺序上报给目标小区基站，例如，第一终端设备可以将排序后的波束索引的顺序上报给目标小区基站。
该至少一个波束的信号质量的排序可以是按照RSRP的大小进行排序，也可以是按照RSRQ的大小进行排序，或者也可以是按照SINR的大小进行排序。当然，第一终端设备也可以将至少一个波束的RSRP、RSRQ和SINR综合起来进行排序，本申请实施例对此不做具体限定。
第一终端设备可以在随机接入过程中，记录该第一信息，并在随机接入完成后向目标下去基站上报该第一信息。如第一终端设备可以在随机接入过程中，记录随机接入过程中的功率攀升次数，目标小区的标识信息，当前使用的波束的索引，目标小区的信号质量，目标小区中的至少一个波束的信号质量，目标小区中的至少一个波束的信号质量的排序和终端设备的位置信息等。
记录第一信息可以指第一终端设备存储第一信息，也可以指第一终端设备对第一信息进行测量。如第一终端设备对小区的信号质量进行测量，和/或对目标小区中的至少一个波束的质量进行测量等。
本申请实施例对第一终端设备记录第一信息的时刻不做具体限定，第一终端设备可以在随机接入过程中的任意时刻记录该第一信息。
作为一种实现方式，第一信息可以是在以下时刻中的至少一个时刻记录的：第一终端设备接收到目标小区基站发送的随机接入响应消息的时刻，第一终端设备发送前导码的时刻，第一终端设备随机接入完成的时刻。
第一终端设备发送前导码的时刻可以理解为第一终端设备发送随机接入过程中的第一条消息的时刻。
对于基于竞争的随机接入，随机接入完成的时刻可以指第一终端设备接收到MSG4，并且该MSG4指示竞争解决成功。对于基于非竞争的随机接入，随机接入完成的时刻可以指第一终端设备接收到目标小区基站发送的随机接入响应消息的时刻。
第一终端设备可以在每次随机接入过程中，都记录第一信息。或者，第一终端设备可以仅在最后一次随机接入过程中，记录第一信息。
本申请实施例中，该第一信息可用于目标小区基站更新或配置上行时间提前量和/或前导码的发送功率。
如果目标小区基站之前未广播上行时间提前量，则目标小区基站可以将确定的上行时间提前量配置给终端设备。如果如果目标小区基站之前已经广播了上行时间提前量，则目标小区基站可以对之前广播的上行时间提前量进行更新。
广播上行时间提前量可以是采用专用的系统消息进行广播，也可以是复用之前的系统消息进行广播。
更新或配置上行时间提前量可以指目标小区基站提前通过系统消息广播上行时间提前量，如可以在广播前导码的发送功率的同时，广播上行时间提前量。更新前导码的发送功率可以指目标小区基站在广播前导码的发送功率之后，根据第一终端设备上报的第一信息，重新广播更新后的发送功率。
第一终端设备在随机接入完成后，向目标小区基站发送第一信息，可以指第一终端设备在随机接入完成后，立即向目标小区基站上报第一信息，如第一终端设备可以在接收到竞争解决成功的消息后，立即向目标小区基站上报第一信息。或者，第一终端设备在随机接入完成后，向目标小区基站发送第一信息，可以指第一终端设备在随机接入完成后，在某个预设时间间隔后的时刻向目标小区基站上报第一信息。
本申请实施例也可以不限于在随机接入完成后，再向目标小区基站上报第一信息，如第一终端设备可以在接收到目标小区基站发送的随机接入响应后向目标小区基站上报第一信息，例如，在某些情况下，第一终端设备可以通过MSG3向网络设备上报第一信息。
为方便描述，本申请实施例将第一信息的内容分为信息a和信息b进行描述，信息a包括用于发送前导码的功率参数和上行提前量中的至少一种，信息b包括第一信息中除信息a之外的其他信息。
第一终端设备可以向目标小区基站上报随机接入过程中使用的前导码，以便于目标小区基站建立不同前导码与发送功率和/或上行时间提前量之间的对应关系。第一终端设备上报目标小区的标识信息，以便于目标小区基站确定第一终端设备处于哪个小区。第一终端设备上报当前使用的波束索引，以便于目标小区基站确定第一终端设备是使用哪个波束进行随机接入的。
如果目标小区基站能够自行确定第一终端设备的上述信息，第一终端设备也可以不用向目标小区基站上报该信息。
本申请实施例中，第一终端设备上报信息b的目的是为了目标小区基站确定第一终端设备的位置信息，以使目标小区基站根据终端设备的位置信息以及上行时间提前量，对随机接入过程中的参数进行优化；或者使目标小区基站根据终端设备的位置信息以及前导码的发送功率，对随机接入过程中的参数进行优化。
作为一个示例，目标小区基站在对功率参数进行优化时，可以考虑终端设备的位置信息。例如，如果在目标小区中心区域，有多个终端设备的时延较长，则目标小区基站可以对功率参数进行优化，如提高期望接收功率，或者增加功率攀升的步长等。如果中心区域的终端设备时延能够满足要求，但是边缘区域的终端设备的时延较长，则目标小区基站可以对功率参数进行优化，也可以不进行优化。目标小区基站的优化方式取决于网络的具体实现，本申请实施例对此不作具体限定。
第一终端设备在上报时，也可以仅上报发送前导码的功率参数，而不用上报其他的如位置信息等信息，目标小区基站可以仅根据多个第一终端设备上报的功率参数对前导码的发送功率进行优化。例如，如果上报的终端设备中，有50％以上的终端设备的时延都较高，则目标小区基站可以对前导码的发送功率进行优化；如果上报的终端设备中，仅有10％以下的终端设备的时延较高，则目标小区基站可以不用对前导码的发送功率进行优化。
作为又一示例，目标小区基站接收到大量第一终端设备上报的第一信息之后，可以确定第一终端设备在不同位置对应的上行时间提前量的信息，然后目标小区基站可以将不同位置与上行时间提前量的对应关系通过系统消息广播给终端设备。之后需要接入该目标小区的第二终端设备可以根据该对应关系确定自己的上行时间提前量，然后使用该上行时间提前量进行随机接入。
信息b中的目标小区的信号质量、目标小区中的至少一个波束的信号质量以及目标小区中至少一个波束的信号质量的排序在一定程度上能够反映终端设备的位置信息。
作为一种可能的实现方式，第一信息包括用于发送前导码的功率参数，第一信息还可以包括以下信息中的至少一种：目标小区的信号质量，目标小区中的至少一个波束的信号质量，目标小区中的至少一个波束的信号质量的排序和终端设备的位置信息。
作为又一种可能的实现方式，第一信息包括上行时间提前量，第一信息还可以包括以下信息中的至少一种：目标小区的信号质量，目标小区中的至少一个波束的信号质量，目标小区中的至少一个波束的信号质量的排序和终端设备的位置信息。
本申请实施例中，第一终端设备在随机接入成功后，可以向目标小区基站上报随机接入过程中的功率参数以及信息b，这样目标小区基站可以根据功率参数以及信息b，对前导码的功率参数进行优化，以降低终端设备随机接入过程中的时延。另外，第一终端设备可以将上行时间提前量和信息b上报给目标小区基站，这样目标小区基站可以将上行时间提前量与信息b的对应关系广播给终端设备，后续需要接入该目标小区基站的第二终端设备可以在该广播消息中确定自己当前位置的上行时间提前量，而无需等待接收到RAR后才能够确定上行时间提前量。这样在发送随机接入过程中的第一条消息时就可以使用该上行时间提前量，能够提高随机接入过程中的第一条消息的可靠性。
第一终端设备上报的上行时间提前量可以是终端设备在随机接入过程中，接收到目标小区基站发送的RAR后，从该RAR中获得的。
第一终端设备向目标小区基站发送第一信息可以是在目标小区基站支持优化用于随机接入的参数的功能的情况下，向目标小区基站发送第一信息。对于不支持优化用于随机接入的参数的功能的基站，第一终端设备可以不用向该基站发送第一信息，当然，在该情况下，第一终端设备也可以不用记录该第一信息。
支持优化用于随机接入的参数的功能可以指基站支持更新随机接入过程中的参数，如支持更新前导码的发射功率的参数，或者支持广播或更新上行时间提前量等。
第一终端设备向目标小区基站上报第一信息，可以是第一终端设备主动向目标小区基站上报第一信息，也可以是第一终端设备基于目标小区基站的请求，向目标小区基站发送第一信息。
作为一个示例，第一终端设备可以接收目标小区基站发送的请求消息，该请求消息用于指示第一终端设备向目标小区基站发送第一信息；第一终端设备在接收到该请求消息后，基于该请求消息，向目标小区基站发送第一信息。
作为又一示例，第一终端设备可以在随机接入完成后，向目标小区基站发送第一指示信息，该第一指示信息用于指示第一终端设备中记录有第一信息，或者说该第一指示信息用于指示第一终端设备中记录有用于优化随机接入过程中的参数的信息。目标小区基站接收到该第一指示信息之后，可以根据自身情况，确定是否需要向终端设备发送请求消息，以请求第一终端设备发送第一信息。
例如，如果目标小区基站支持优化用于随机接入的参数的功能，则目标小区基站可以向第一终端设备发送请求消息；如果目标小区基站不支持优化用于随机接入的参数的功能，则目标小区基站可以不向第一终端设备发送请求消息。
第一终端设备向目标小区基站发送第一指示信息，可以是在随机接入完成后，直接向目标小区基站发送第一指示信息，或者，第一终端设备也可以在目标小区基站支持优化用于随机接入的参数的功能的情况下，再向目标小区基站发送第一指示信息。
目标小区基站可以广播是否支持优化用于随机接入的参数的功能，这样第一终端设备可以确定是否需要向目标小区基站发送第一指示信息和/或第一信息，这样有利于节省信令开销。例如，目标小区基站可以广播第二指示信息，第二指示信息用于指示目标小区基站支持优化用于随机接入的参数的功能，第一终端设备接收到该第二指示信息后，可以向目标小区基站发送第一指示信息和/或第一信息。
目标小区基站广播第二指示信息可以是通过系统消息广播的。
第一指示信息可以承载在以下消息中的至少一种中：RRC连接建立完成消息，RRC重建立完成消息和RRC连接恢复完成消息。
第一终端设备发送第一信息可以是通过专用信令发送的，如第一终端设备可以向目标小区基站发送第一消息，该第一消息专用于承载第一信息。
目标小区基站可以根据多个第一终端设备上报的第一信息，进行参数优化。具体的优化过程取决于网络的产品实现。
例如，第一信息可以包括第一终端设备的功率攀升次数和位置信息。目标小区基站可以根据多个第一终端设备上报的功率攀升次数和位置信息，确定优化方案。如果目标小区基站确定在某个位置或某个区域，多个第一终端设备的功率攀升次数均比较多，此时目标小区基站可以对该位置或该区域的功率参数进行优化，如提高期望接收功率和/或增大功率攀升步长。
图8所示的方法还可以包括S830和S840。
S830、目标小区基站接收到第一终端设备上报的第一信息后，可以更新或配置随机接入过程中的配置信息，该配置信息包括以下信息中的至少一种：前导码的发送功率的配置信息和/或上行时间提前量的配置信息。在对配置信息进行更新或配置后，目标小区基站可以广播更新后的配置信息。
为方便描述，本申请实施例可以将更新后的配置信息称为第一配置信息，将更新前的配置信息称为第二配置信息。第二配置信息是终端设备未接收到第一终端设备发送的第一信息之前广播的，第一配置信息是终端设备在接收到第一终端设备发送的第一信息之后广播的。
第一配置信息是网络设备在发送第二配置信息之后发送的。第一配置信息可以是第二终端设备在接收目标小区基站发送的随机接入响应消息之前接收的。
第一配置信息与第二配置信息包含的信息可以相同，也可以不同。例如，第一配置信息和第二配置信息均包括功率配置信息和/或上行时间提前量的配置信息。又例如，第二配置信息不包括上行时间提前量的配置信息，而第一配置信息可以包括上行时间提前量的配置信息。再例如，第一配置信息中可以仅包括第二配置信息中发生更新的信息，对于没有发生更新的信息，目标小区基站可以不广播。
第一配置信息与第二配置信息包含的信息相同，并不表示第一配置信息和第二配置信息的内容相同，而是表示第一配置信息和第二配置信息可以均包括功率配置信息，但是功率配置信息的具体参数不同。
S840、第二终端设备可以接收目标小区基站发送的第一配置信息，以用于随机接入。例如，第二终端设备可以根据目标小区基站发送的第一配置信息，进行随机接入。
第二终端设备接收第一配置信息可以是在随机接入成功之前接收的。例如，第二终端设备可以在接收目标小区基站发送的随机接入响应消息之前接收第一配置信息。
前导码的发送功率的配置信息可以前导码的期望接收功率，前导码的发射功率偏移量和前导码的发射功率的调整步长。
目标小区基站广播更新后的配置信息时，可以广播前导码的期望接收功率，前导码的发射功率偏移量和前导码的发射功率的调整步长中的至少一种。
第二终端设备接收到更新后的前导码的发送功率的配置信息之后，可以根据更新后的前导码的发送功率的配置信息，进行随机接入。例如，第二终端设备可以根据更新后的期望接收功率发送前导码，和/或根据更新后的发射功率偏移量发送前导码，和/或按照更新后的发射功率的调整步长发送前导码。
上行时间提前量的配置信息包括以下信息中的至少一种：上行时间提前量，上行时间提前量与第一参数之间的对应关系，所述第一参数括以下信息中的至少一种：随机接入前导码，目标小区的标识信息，目标小区的信号质量，目标小区中的至少一个波束的信号质量，目标小区中至少一个波束的信号质量的排序，终端设备的位置信息，SSB的门限和满足门限的SSB组。
作为一种优选的实现方式，上行时间提前量的配置信息可以包括上行时间提前量与第一参数之间的对应关系，第一参数可以包括以下信息中的至少一种：目标小区的信号质量，目标小区中的至少一个波束的信号质量，目标小区中至少一个波束的信号质量的排序，终端设备的位置信息，SSB的门限和满足门限的SSB组。
在上行时间提前量的配置信息包括上行时间提前量的情况下，则所有需要接入目标小区的第二终端设备可以均使用该上行时间提前量进行随机接入。
上行时间提前量可以指上行时间提前量的取值，或者可以指上行提前量的取值范围。
对于上行时间提前量为上行提前量的取值范围的情况，第二终端设备可以从该取值范围中随机选择一个作为上行时间提前量。
目标小区基站在广播更新后的上行时间提前量的配置信息时，可以仅广播上行时间提前量，或者也可以广播上行时间提前量与第一参数之间的对应关系。
SSB可以指上文描述的波束，SSB的门限可以指波束的信号质量的门限。不同的波束可以设置不同的门限。
满足门限的SSB组可以指满足门限的波束的组合。
第二终端设备可以对系统消息进行监听，以确定目标小区基站是否广播第一配置信息。如果监听到目标小区基站广播了第一配置信息，则第二终端设备可以接收第一配置信息。第二终端设备接收到第一配置信息之后，可以将之前接收到的第二配置信息更新为第一配置信息，也就是说，第二终端设备可以将第二配置信息替换为第一配置信息。
对于第一配置信息包括上行时间提前量的配置信息的情况，如果目标小区基站之前没有广播过上行时间提前量，表示第一配置信息是目标小区基站首次向终端设备广播的，则第二终端设备可以直接将第一配置信息进行存储。
如果第一配置信息是第二终端设备正在使用第二配置信息进行随机接入的情况下接收的，则第二终端设备可以继续使用第二配置信息进行当前的随机接入过程。如果当前的随机接入过程失败，则终端设备可以使用第一配置信息重新发起随机接入。
如果第一配置信息是第二终端设备正在使用第二配置信息进行随机接入的情况下接收的，则第二终端设备可以停止使用第二配置信息进行随机接入，而采用第一配置信息进行随机接入。
当然，对于第一配置信息是第二终端设备正在使用第二配置信息进行随机接入的情况下接收的情况，第二终端设备可以继续使用第二配置信息进行随机接入，直至随机接入成功。在该情况下，第二配置信息主要适用于还未开始进行随机接入的终端设备。
假设第一配置信息包括前导码的发送功率的配置信息，前导码的发送功率的配置信息包括更新后的前导码的初始发送功率，则第二终端设备可以使用更新后的前导码的初始发送功率发送前导码；如果前导码的发送功率的配置信息包括更新后的功率攀升步长，则第二终端设备可以使用更新后的功率攀升步长进行攀升，并以攀升后的功率进行随机接入。
第一配置信息包括上行时间提前量的配置信息，则第二终端设备可以根据上行时间提前量的配置信息，向目标小区基站发送随机接入过程中的第一条消息。
上行时间提前量的配置信息可以包括上行时间提前量与第一参数之间的对应关系，第二终端设备可以根据上行时间提前量的配置信息，向目标小区基站发送随机接入过程中的第一条消息，可以包括：第二终端设备根据上行时间提前量的配置信息，以及测量得到的所述第一参数，确定第二终端设备需要使用的目标上行时间提前量，其中，第一参数可以包括以下信息中的至少一种：目标小区的波束信息，目标小区的信号质量，目标小区中的至少一个波束信号质量，第二终端设备的位置信息；第二终端设备使用该目标上行时间提前量向目标小区基站发送随机接入过程中的第一条消息。
下面以上行时间提前量为例，对第二终端设备进行随机接入的过程进行描述。
假设目标小区基站广播的配置信息包括上行时间提前量的配置信息。
如果第一配置信息中配置了上行时间提前量，则第二终端设备可以使用该上行时间提前量发送前导码。如果第二终端设备正在进行随机接入，则第二终端设备可以停止当前的随机接入，并以该上行时间提前量重新发送前导码；或者，第二终端设备可以继续当前的随机接入，并在当前的随机接入失败后，以该上行时间提前量重新发送前导码。
对于配置信息包括至少一个波束的信号质量的排序的情况，目标小区基站可以广播不同排序对应的上行时间提前量。第二终端设备接收到配置信息后，可以对该至少一个波束的信号质量进行测量并排序，并根据确定出的排序结果，以及目标小区基站广播的不同排序对应的上行时间提前量，确定当前位置的目标上行时间提前量。进而第二终端设备可以使用确定出的目标上行时间提前量向目标小区基站发送前导码。
对于配置信息包括满足门限的SSB组的情况，目标小区基站可以配置SSB的门限，以及满足门限的SSB组，不同的SSB组对应不同的上行时间提前量。第二终端设备接收到该配置信息后，可以对目标小区的SSB(或称为波束)进行测量，并确定满足门限的SSB组。然后第二终端设备可以根据确定出的SSB组，以及目标小区基站广播的不同SSB组与上行时间提前量之间的对应关系，确定当前位置需要使用的目标上行时间提前量。进而第二终端设备可以使用确定出的目标上行时间提前量向目标小区基站发送前导码。
可以理解的是，第二终端设备确定出的SSB组与目标小区基站广播的SSB组不一定完全相同。为方便描述，将第二终端设备确定出的SSB组称为第一SSB组，将目标小区基站广播的SSB组称为第二SSB组。只要第一SSB组与第二SSB组有交集，则可以将第二SSB组对应的上行时间提前量确定为第二终端设备需要使用的目标上行时间提前量。
例如，如果第一SSB组包括第二SSB组中的所有SSB，则可以将第二SSB组对应的上行时间提前量确定为第二终端设备需要使用的目标上行时间提前量。又例如，如果第一SSB组和第二SSB组中相同的SSB的数量超过预设阈值，则可以将第二SSB组对应的上行时间提前量确定为第二终端设备需要使用的目标上行时间提前量。
对于第一参数中包括的其他信息，第二终端设备确定目标上行时间提前量的方式可以与上文描述的方式类似，此处不再赘述。
第二终端设备可以使用选择的上行时间提前量发送随机接入过程中的第一条消息，或者说，第二终端设备可以使用选择的上行时间提前量发送随机接入前导码。
当然，目标小区基站也可以广播第一参数与前导码的发送功率之间的对应关系，这样，第二终端设备可以根据不同的位置选择不同的发送功率发送前导码。目标小区基站广播第一参数与前导码的发送功率之间的对应关系，与目标小区基站广播第一参数与上行时间提前量的方式类似，以及第二终端设备确定目标发送功率的方式与第二终端设备确定上行时间提前量的方式也类似，此处不再赘述。上文中详细描述了根据本申请实施例的用于随机接入的方法，下面将结合图9至图14，描述根据本申请实施例的装置，方法实施例所描述的技术特征适用于以下装置实施例。
图9是本申请实施例的一种终端设备的示意性框图，该终端设备可以是上文描述的任一种终端设备，例如，该终端设备可以是上文描述的第一终端设备。图9的终端设备900包括通信单元910，其中：
通信单元910，用于向目标小区基站发起随机接入；向所述目标小区基站发送第一信息，所述第一信息包括以下信息中的至少一种：用于发送前导码的功率参数和上行时间提前量。
可选地，所述第一信息还包括以下信息中的至少一种：所述终端设备进行随机接入使用的前导码，目标小区的标识信息，目标小区的信号质量，所述终端设备使用的波束索引，目标小区中的至少一个波束的信号质量，目标小区中至少一个波束的信号质量的排序和所述终端设备的位置信息。
可选地，所述目标小区的信号质量包括以下信息中的至少一种：所述目标小区的参考信号接收功率RSRP，所述目标小区的参考信号接收质量RSRQ，所述目标小区的信号与干扰加噪声比SINR。
可选地，所述目标小区中的至少一个波束的信号质量包括以下信息中的至少一种：所述至少一个波束的RSRP以及所述至少一个波束的索引，所述至少一个波束的RSRQ以及所述至少一个波束的索引，所述至少一个波束的SINR以及所述至少一个波束的索引。
可选地，所述用于发送前导码的功率参数包括随机接入过程中的功率攀升次数和/或所述终端设备的功率等级。
可选地，所述第一信息包括用于发送前导码的功率参数，所述第一信息还包括以下信息中的至少一种：所述目标小区的信号质量，所述目标小区中的至少一个波束的信号质量，所述目标小区中至少一个波束的信号质量的排序和所述终端设备的位置信息。
可选地，所述第一信息是所述终端设备在随机接入完成后向所述目标小区基站发送的。
可选地，所述第一信息包括所述上行时间提前量，所述第一信息还包括以下信息中的至少一种：所述目标小区的信号质量，所述目标小区中的至少一个波束的信号质量，所述目标小区中至少一个波束的信号质量的排序和所述终端设备的位置信息。
可选地，所述通信单元910用于：在所述目标小区基站支持优化用于随机接入的参数的功能的情况下，向所述目标小区基站发送所述第一信息。
可选地，所述通信单元910用于：接收所述目标小区基站发送的请求消息，所述请求消息用于指示所述终端设备向所述目标小区基站发送所述第一信息；基于所述请求消息，向所述目标小区基站发送所述第一信息。
可选地，所述通信单元910还用于：在随机接入成功后，向所述目标小区基站发送第一指示信息，所述第一指示信息用于指示所述终端设备中记录有所述第一信息；接收所述目标小区基站基于所述第 一指示信息发送的请求消息。
可选地，所述通信单元910用于：接收所述目标小区基站发送的第二指示信息，所述第二指示信息用于指示所述目标小区基站支持优化用于随机接入的参数的能力；基于所述第二指示信息，向所述目标小区基站发送所述第一指示信息。
可选地，所述第二指示信息是所述目标小区基站通过系统消息广播的。
可选地，所述第一指示信息承载在以下消息中的至少一种中：无线资源控制RRC连接建立完成消息，RRC重建立完成消息和RRC连接恢复完成消息。
可选地，所述终端设备还包括处理单元920，所述处理单元920用于：在随机接入过程中，记录所述第一信息；或在随机接入完成后，记录所述第一信息。
可选地，所述第一信息是在以下时刻中的至少一个时刻记录的：所述终端设备接收到所述目标小区基站发送的随机接入响应消息的时刻，所述终端设备发送前导码的时刻，所述终端设备随机接入完成的时刻。
可选地，所述终端设备向所述目标小区基站发起的随机接入为基于竞争的随机接入，所述终端设备随机接入成功的时刻包括所述终端设备接收到竞争解决成功的消息的时刻。
可选地，所述终端设备向所述目标小区基站发起的随机接入为基于非竞争的随机接入，所述终端设备随机接入成功的时刻包括所述终端设备接收到随机接入响应消息的时刻。
可选地，所述上行时间提前量是从随机接入响应消息中获取的。
可选地，所述第一信息用于所述目标小区基站更新或配置上行时间提前量和/或前导码的发送功率。
图10是本申请实施例的一种终端设备的示意性框图，该终端设备可以是上文描述的任一种终端设备，例如，该终端设备可以是上文描述的第二终端设备。图10的终端设备1000包括通信单元1010和处理单元1020，其中：
通信单元1010，用于在随机接入成功之前，接收目标小区基站发送的更新后的第一配置信息，所述第一配置信息包括以下信息中的至少一种：前导码的发送功率的配置信息，上行时间提前量的配置信息；处理单元1020，用于根据所述更新后的第一配置信息进行随机接入。
可选地，所述前导码的发送功率的配置信息包括以下信息中的至少一种：前导码的期望接收功率，前导码的发射功率偏移量和前导码的发射功率的调整步长。
可选地，所述上行时间提前量的配置信息包括上行时间提前量和/或上行时间提前量与第一参数之间的对应关系，所述第一参数包括以下信息中的至少一种：随机接入前导码，目标小区的标识信息，目标小区的信号质量，目标小区中的至少一个波束的信号质量，目标小区中至少一个波束的信号质量的排序，终端设备的位置信息，同步信号块SSB的门限和满足门限的SSB组。
可选地，所述目标小区的信号质量包括以下信息中的至少一种：所述目标小区的参考信号接收功率RSRP，所述目标小区的参考信号接收质量RSRQ，所述目标小区的信号与干扰加噪声比SINR。
可选地，所述目标小区中的至少一个波束的信号质量包括以下信息中的至少一种：所述至少一个波束的RSRP以及所述至少一个波束的索引，所述至少一个波束的RSRQ以及所述至少一个波束的索引，所述至少一个波束的SINR以及所述至少一个波束的索引。
可选地，所述处理单元1020用于：将存储的第二配置信息更新为所述第一配置信息，所述第二配置信息为所述终端设备在接收所述第一配置信息之前，所述目标小区基站发送的配置信息。
可选地，所述第一配置信息是在所述终端设备正在使用所述第二配置信息进行随机接入的情况下接收的，所述处理单元1020用于：控制所述终端设备停止使用所述第二配置信息进行随机接入；控制所述终端设备使用所述第一配置信息进行随机接入。
可选地，所述第一配置信息是在所述终端设备正在使用所述第二配置信息进行随机接入的情况下接收的，所述处理单元1020用于：控制所述终端设备继续使用所述第二配置信息进行随机接入；在使用所述第二配置信息的随机接入失败后，控制所述终端设备使用所述第一配置信息进行随机接入。
可选地，所述第一配置信息包括更新后的所述前导码的发送功率的配置信息，
所述通信单元1010用于：使用更新后的所述前导码的发送功率的配置信息进行随机接入。
可选地，所述第一配置信息包括上行时间提前量的配置信息，所述通信单元1010用于：根据所述上行时间提前量的配置信息，向所述目标小区基站发送随机接入过程中的第一条消息。
可选地，所述上行时间提前量的配置信息包括上行时间提前量与第一参数之间的对应关系，所述处理单元1020用于：根据上行时间提前量的配置信息，以及测量得到的所述第一参数，确定所述终端设备需要使用的目标上行时间提前量，所述第一参数包括以下信息中的至少一种：目标小区的波束信息，目标小区的信号质量，目标小区中的至少一个波束信号质量，所述终端设备的位置信息；所述通信单元1010用于：使用所述目标上行时间提前量向所述目标小区基站发送随机接入过程中的第一条消息。
可选地，所述更新后的第一配置信息是所述终端设备在接收随机接入响应消息之前接收的。
图11是本申请实施例的一种网络设备的示意性框图，该网络设备可以是上文描述的任一种终端设备，例如，该网络设备可以是上文描述的目标小区基站。图11的网络设备1100包括通信单元1110和处理单元1120，其中：
通信单元1110，用于获取第一信息，所述第一信息包括以下信息中的至少一种：用于发送前导码的功率参数和上行时间提前量；处理单元1120，用于根据所述第一信息，更新或配置随机接入过程中的前导码的发送功率的配置信息和/或上行时间提前量的配置信息。
可选地，所述第一信息还包括以下信息中的至少一种：所述第一信息还包括以下信息中的至少一种：所述终端设备进行随机接入使用的前导码，目标小区的标识信息，目标小区的信号质量，目标小区中的至少一个波束的信号质量，目标小区中至少一个波束的信号质量的排序和所述终端设备的位置信息。
可选地，所述目标小区的信号质量包括以下信息中的至少一种：所述目标小区的参考信号接收功率RSRP，所述目标小区的参考信号接收质量RSRQ，所述目标小区的信号与干扰加噪声比SINR。
可选地，所述目标小区中的至少一个波束的信号质量包括以下信息中的至少一种：所述至少一个波束的RSRP以及所述至少一个波束的索引，所述至少一个波束的RSRQ以及所述至少一个波束的索引，所述至少一个波束的SINR以及所述至少一个波束的索引。
可选地，所述前导码的发送功率的配置信息包括以下信息中的至少一种：前导码的期望接收功率，前导码的发射功率偏移量和前导码的发射功率的调整步长。
可选地，所述上行时间提前量的配置信息包括上行时间提前量和/或上行时间提前量与第一参数之间的对应关系，所述第一参数包括以下信息中的至少一种：随机接入前导码，目标小区的标识信息，目标小区的信号质量，目标小区中的至少一个波束的信号质量，目标小区中至少一个波束的信号质量的排序，终端设备的位置信息，同步信号块SSB的门限和满足门限的SSB组。
可选地，所述通信单元1110用于：接收终端设备发送的第一指示信息，所述第一指示信息用于指示所述终端设备中记录有所述第一信息；向所述终端设备发送请求消息，所述请求消息用于指示所述终端设备向所述目标小区基站发送所述第一信息。
可选地，所述第一指示信息承载在以下消息中的至少一种中：无线资源控制RRC连接建立完成消息，RRC重建立完成消息和RRC连接恢复完成消息。
可选地，所述通信单元1110还用于：通过系统消息广播更新后的前导码的发送功率的配置信息和/或上行时间提前量的配置信息。
可选地，所述通信单元1110还用于：广播第二指示信息，所述第二指示信息用于指示所述目标小区基站支持优化随机接入过程中的参数的功能，所述第二指示信息用于指示终端设备向所述目标小区基站发送所述第一信息。
可选地，所述通信单元1110还用于：通过系统消息广播更新后的或配置的前导码的发送功率的配置信息和/或上行时间提前量的配置信息。
图12是本申请实施例提供的一种通信设备1200示意性结构图。图12所示的通信设备1200包括处理器1210，处理器1210可以从存储器中调用并运行计算机程序，以实现本申请实施例中的方法。
可选地，如图12所示，通信设备1200还可以包括存储器1220。其中，处理器1210可以从存储器1220中调用并运行计算机程序，以实现本申请实施例中的方法。
其中，存储器1220可以是独立于处理器1210的一个单独的器件，也可以集成在处理器1210中。
可选地，如图12所示，通信设备1200还可以包括收发器1230，处理器1210可以控制该收发器1230与其他设备进行通信，具体地，可以向其他设备发送信息或数据，或接收其他设备发送的信息或数据。
其中，收发器1230可以包括发射机和接收机。收发器1230还可以进一步包括天线，天线的数量可以为一个或多个。
可选地，该通信设备1200具体可为本申请实施例的网络设备，并且该通信设备1200可以实现本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该通信设备1200具体可为本申请实施例的移动终端/终端设备，并且该通信设备1200可以实现本申请实施例的各个方法中由移动终端/终端设备实现的相应流程，具体地，该通信设备1200可以实现本申请实施例的各个方法中由第一终端设备和/或第二终端设备实现的相应流程，为了简洁，在此不再赘述。
图13是本申请实施例的装置的示意性结构图。图13所示的装置1300包括处理器1310，处理器1310可以从存储器中调用并运行计算机程序，以实现本申请实施例中的方法。
可选地，如图13所示，装置1300还可以包括存储器1320。其中，处理器1310可以从存储器1320 中调用并运行计算机程序，以实现本申请实施例中的方法。
其中，存储器1320可以是独立于处理器1313的一个单独的器件，也可以集成在处理器1310中。
可选地，该装置1300还可以包括输入接口1330。其中，处理器1310可以控制该输入接口1330与其他设备或装置进行通信，具体地，可以获取其他设备或装置发送的信息或数据。
可选地，该装置1300还可以包括输出接口1340。其中，处理器1310可以控制该输出接口1340与其他设备或装置进行通信，具体地，可以向其他设备或装置输出信息或数据。
可选地，该装置可应用于本申请实施例中的网络设备，并且该装置可以实现本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该装置可应用于本申请实施例中的移动终端/终端设备，并且该装置可以实现本申请实施例的各个方法中由移动终端/终端设备实现的相应流程，为了简洁，在此不再赘述。
应理解，本申请实施例提到的装置可以为芯片，该芯片还可以称为系统级芯片，系统芯片，芯片系统或片上系统芯片等。
图14是本申请实施例提供的一种通信系统1400的示意性框图。如图14所示，该通信系统1400包括终端设备1410和网络设备1420。
其中，该终端设备1410可以用于实现上述方法中由终端设备实现的相应的功能，以及该网络设备1420可以用于实现上述方法中由网络设备实现的相应的功能为了简洁，在此不再赘述。
应理解，本申请实施例的处理器可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现成可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。
可以理解，本申请实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(Dynamic RAM，DRAM)、同步动态随机存取存储器(Synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)。应注意，本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
应理解，上述存储器为示例性但不是限制性说明，例如，本申请实施例中的存储器还可以是静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synch link DRAM，SLDRAM)以及直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)等等。也就是说，本申请实施例中的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
本申请实施例还提供了一种计算机可读存储介质，用于存储计算机程序。
可选的，该计算机可读存储介质可应用于本申请实施例中的网络设备，并且该计算机程序使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该计算机可读存储介质可应用于本申请实施例中的移动终端/终端设备，并且该计算机程序使得计算机执行本申请实施例的各个方法中由移动终端/终端设备实现的相应流程，为了简洁，在此不再赘述。
本申请实施例还提供了一种计算机程序产品，包括计算机程序指令。
可选的，该计算机程序产品可应用于本申请实施例中的网络设备，并且该计算机程序指令使得计算 机执行本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该计算机程序产品可应用于本申请实施例中的移动终端/终端设备，并且该计算机程序指令使得计算机执行本申请实施例的各个方法中由移动终端/终端设备实现的相应流程，为了简洁，在此不再赘述。
本申请实施例还提供了一种计算机程序。
可选的，该计算机程序可应用于本申请实施例中的网络设备，当该计算机程序在计算机上运行时，使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该计算机程序可应用于本申请实施例中的移动终端/终端设备，当该计算机程序在计算机上运行时，使得计算机执行本申请实施例的各个方法中由移动终端/终端设备实现的相应流程，为了简洁，在此不再赘述。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，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，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元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。针对这样的理解，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)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。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应所述以权利要求的保护范围为准。

Claims (101)

  1. 一种用于随机接入的方法，其特征在于，包括：
    终端设备向目标小区基站发起随机接入；
    所述终端设备向所述目标小区基站发送第一信息，所述第一信息包括以下信息中的至少一种：用于发送前导码的功率参数和上行时间提前量。
  2. 根据权利要求1所述的方法，其特征在于，所述第一信息还包括以下信息中的至少一种：所述终端设备进行随机接入使用的前导码，目标小区的标识信息，目标小区的信号质量，目标小区中的至少一个波束的信号质量，目标小区中至少一个波束的信号质量的排序和所述终端设备的位置信息。
  3. 根据权利要求2所述的方法，其特征在于，所述目标小区的信号质量包括以下信息中的至少一种：所述目标小区的参考信号接收功率RSRP，所述目标小区的参考信号接收质量RSRQ，所述目标小区的信号与干扰加噪声比SINR。
  4. 根据权利要求2或3所述的方法，其特征在于，所述目标小区中的至少一个波束的信号质量包括以下信息中的至少一种：所述至少一个波束的RSRP以及所述至少一个波束的索引，所述至少一个波束的RSRQ以及所述至少一个波束的索引，所述至少一个波束的SINR以及所述至少一个波束的索引。
  5. 根据权利要求1-4中任一项所述的方法，其特征在于，所述用于发送前导码的功率参数包括随机接入过程中的功率攀升次数和/或所述终端设备的功率等级。
  6. 根据权利要求1-5中任一项所述的方法，其特征在于，所述第一信息包括所述用于发送前导码的功率参数，所述第一信息还包括以下信息中的至少一种：目标小区的信号质量，目标小区中的至少一个波束的信号质量，目标小区中至少一个波束的信号质量的排序和所述终端设备的位置信息。
  7. 根据权利要求1-6中任一项所述的方法，其特征在于，所述第一信息包括所述上行时间提前量，所述第一信息还包括以下信息中的至少一种：目标小区的信号质量，目标小区中的至少一个波束的信号质量，目标小区中至少一个波束的信号质量的排序和所述终端设备的位置信息。
  8. 根据权利要求1-7中任一项所述的方法，其特征在于，所述第一信息是所述终端设备在随机接入完成后向所述目标小区基站发送的。
  9. 根据权利要求1-8中任一项所述的方法，其特征在于，所述终端设备向所述目标小区基站发送第一信息，包括：
    在所述目标小区基站支持优化用于随机接入的参数的功能的情况下，所述终端设备向所述目标小区基站发送所述第一信息。
  10. 根据权利要求1-9中任一项所述的方法，其特征在于，所述终端设备向所述目标小区基站发送第一信息，包括：
    所述终端设备接收所述目标小区基站发送的请求消息，所述请求消息用于指示所述终端设备向所述目标小区基站发送所述第一信息；
    所述终端设备基于所述请求消息，向所述目标小区基站发送所述第一信息。
  11. 根据权利要求10所述的方法，其特征在于，所述方法还包括：
    所述终端设备在随机接入成功后，向所述目标小区基站发送第一指示信息，所述第一指示信息用于指示所述终端设备中记录有所述第一信息；
    所述终端设备接收所述目标小区基站基于所述第一指示信息发送的所述请求消息。
  12. 根据权利要求11所述的方法，其特征在于，所述终端设备向所述目标小区基站发送第一指示信息，包括：
    所述终端设备接收所述目标小区基站发送的第二指示信息，所述第二指示信息用于指示所述目标小区基站支持优化用于随机接入的参数的能力；
    所述终端设备基于所述第二指示信息，向所述目标小区基站发送所述第一指示信息。
  13. 根据权利要求12所述的方法，其特征在于，所述第二指示信息是所述目标小区基站通过系统消息广播的。
  14. 根据权利要求11-13中任一项所述的方法，其特征在于，所述第一指示信息承载在以下消息中的至少一种中：无线资源控制RRC连接建立完成消息，RRC重建立完成消息和RRC连接恢复完成消息。
  15. 根据权利要求1-14中任一项所述的方法，其特征在于，所述方法还包括：
    所述终端设备在随机接入过程中，记录所述第一信息；或，
    所述终端设备在随机接入完成后，记录所述第一信息。
  16. 根据权利要求15所述的方法，其特征在于，所述第一信息是在以下时刻中的至少一个时刻记录的：所述终端设备接收到所述目标小区基站发送的随机接入响应消息的时刻，所述终端设备发送前导 码的时刻，所述终端设备随机接入完成的时刻。
  17. 根据权利要求16所述的方法，其特征在于，所述终端设备向所述目标小区基站发起的随机接入为基于竞争的随机接入，所述终端设备随机接入成功的时刻包括所述终端设备接收到竞争解决成功的消息的时刻。
  18. 根据权利要求16或17所述的方法，其特征在于，所述终端设备向所述目标小区基站发起的随机接入为基于非竞争的随机接入，所述终端设备随机接入成功的时刻包括所述终端设备接收到随机接入响应消息的时刻。
  19. 根据权利要求1-18中任一项所述的方法，其特征在于，所述上行时间提前量是从随机接入响应消息中获取的。
  20. 根据权利要求1-19中任一项所述的方法，其特征在于，所述第一信息用于所述目标小区基站配置或更新上行时间提前量和/或前导码的发送功率。
  21. 一种用于随机接入的方法，其特征在于，包括：
    终端设备接收目标小区基站发送的更新后的第一配置信息，所述第一配置信息包括以下信息中的至少一种：前导码的发送功率的配置信息，上行时间提前量的配置信息；
    所述终端设备根据所述更新后的第一配置信息进行随机接入。
  22. 根据权利要求21所述的方法，其特征在于，所述前导码的发送功率的配置信息包括前导码的期望接收功率，前导码的发射功率偏移量和前导码的发射功率的调整步长。
  23. 根据权利要求21或22所述的方法，其特征在于，所述上行时间提前量的配置信息包括上行时间提前量和/或上行时间提前量与第一参数之间的对应关系，所述第一参数包括以下信息中的至少一种：随机接入前导码，目标小区的标识信息，目标小区的信号质量，目标小区中的至少一个波束的信号质量，目标小区中至少一个波束的信号质量的排序，终端设备的位置信息，同步信号块SSB的门限和满足门限的SSB组。
  24. 根据权利要求23所述的方法，其特征在于，所述目标小区的信号质量包括以下信息中的至少一种：所述目标小区的参考信号接收功率RSRP，所述目标小区的参考信号接收质量RSRQ，所述目标小区的信号与干扰加噪声比SINR。
  25. 根据权利要求23或24所述的方法，其特征在于，所述目标小区中的至少一个波束的信号质量包括以下信息中的至少一种：所述至少一个波束的RSRP以及所述至少一个波束的索引，所述至少一个波束的RSRQ以及所述至少一个波束的索引，所述至少一个波束的SINR以及所述至少一个波束的索引。
  26. 根据权利要求21-25中任一项所述的方法，其特征在于，所述方法还包括：
    所述终端设备将存储的第二配置信息更新为所述第一配置信息，所述第二配置信息为所述终端设备在接收所述第一配置信息之前，所述目标小区基站发送的配置信息。
  27. 根据权利要求21-26中任一项所述的方法，其特征在于，所述第一配置信息是在所述终端设备正在使用所述第二配置信息进行随机接入的情况下接收的，所述方法还包括：
    所述终端设备停止使用所述第二配置信息进行随机接入；
    所述终端设备使用所述第一配置信息进行随机接入。
  28. 根据权利要求21-26中任一项所述的方法，其特征在于，所述第一配置信息是在所述终端设备正在使用所述第二配置信息进行随机接入的情况下接收的，所述方法还包括：
    所述终端设备继续使用所述第二配置信息进行随机接入；
    在使用所述第二配置信息的随机接入失败后，所述终端设备使用所述第一配置信息进行随机接入。
  29. 根据权利要求21-28中任一项所述的方法，其特征在于，所述第一配置信息包括更新后的所述前导码的发送功率的配置信息，所述终端设备使用所述第一配置信息进行随机接入，包括：
    所述终端设备使用更新后的所述前导码的发送功率的配置信息进行随机接入。
  30. 根据权利要求21-29中任一项所述的方法，其特征在于，所述第一配置信息包括上行时间提前量的配置信息，所述方法还包括：
    所述终端设备根据所述上行时间提前量的配置信息，向所述目标小区基站发送随机接入过程中的第一条消息。
  31. 根据权利要求21-30中任一项所述的方法，其特征在于，所述上行时间提前量的配置信息包括上行时间提前量与第一参数之间的对应关系，
    所述终端设备根据所述上行时间提前量的配置信息，向所述目标小区基站发送随机接入过程中的第一条消息，包括：
    所述终端设备根据上行时间提前量的配置信息，以及测量得到的所述第一参数，确定所述终端设备 需要使用的目标上行时间提前量，所述第一参数包括以下信息中的至少一种：目标小区的波束信息，目标小区的信号质量，目标小区中的至少一个波束信号质量，所述终端设备的位置信息；
    所述终端设备使用所述目标上行时间提前量向所述目标小区基站发送随机接入过程中的第一条消息。
  32. 根据权利要求21-31中任一项所述的方法，其特征在于，所述更新后的第一配置信息是所述终端设备在接收随机接入响应消息之前接收的。
  33. 一种用于随机接入的方法，其特征在于，包括：
    目标小区基站获取第一信息，所述第一信息包括以下信息中的至少一种：用于发送前导码的功率参数和上行时间提前量；
    所述目标小区基站根据所述第一信息，更新或配置随机接入过程中的前导码的发送功率的配置信息和/或上行时间提前量的配置信息。
  34. 根据权利要求33所述的方法，其特征在于，所述第一信息还包括以下信息中的至少一种：所述第一信息还包括以下信息中的至少一种：所述终端设备进行随机接入使用的前导码，目标小区的标识信息，目标小区的信号质量，目标小区中的至少一个波束的信号质量，目标小区中至少一个波束的信号质量的排序和所述终端设备的位置信息。
  35. 根据权利要求34所述的方法，其特征在于，所述目标小区的信号质量包括以下信息中的至少一种：所述目标小区的参考信号接收功率RSRP，所述目标小区的参考信号接收质量RSRQ，所述目标小区的信号与干扰加噪声比SINR。
  36. 根据权利要求34或35所述的方法，其特征在于，所述目标小区中的至少一个波束的信号质量包括以下信息中的至少一种：所述至少一个波束的RSRP以及所述至少一个波束的索引，所述至少一个波束的RSRQ以及所述至少一个波束的索引，所述至少一个波束的SINR以及所述至少一个波束的索引。
  37. 根据权利要求33-36中任一项所述的方法，其特征在于，所述前导码的发送功率的配置信息包括以下信息中的至少一种：前导码的期望接收功率，前导码的发射功率偏移量和前导码的发射功率的调整步长。
  38. 根据权利要求33-37中任一项所述的方法，其特征在于，所述上行时间提前量的配置信息包括上行时间提前量和/或上行时间提前量与第一参数之间的对应关系，所述第一参数包括以下信息中的至少一种：随机接入前导码，目标小区的标识信息，目标小区的信号质量，目标小区中的至少一个波束的信号质量，目标小区中至少一个波束的信号质量的排序，终端设备的位置信息，同步信号块SSB的门限和满足门限的SSB组。
  39. 根据权利要求33-38中任一项所述的方法，其特征在于，所述方法还包括：
    所述目标小区基站接收终端设备发送的第一指示信息，所述第一指示信息用于指示所述终端设备中记录有所述第一信息；
    所述目标小区基站向所述终端设备发送请求消息，所述请求消息用于指示所述终端设备向所述目标小区基站发送所述第一信息。
  40. 根据权利要求39所述的方法，其特征在于，所述第一指示信息承载在以下消息中的至少一种中：无线资源控制RRC连接建立完成消息，RRC重建立完成消息和RRC连接恢复完成消息。
  41. 根据权利要求33-40中任一项所述的方法，其特征在于，所述方法还包括：
    所述目标小区基站通过系统消息广播更新后的或配置的前导码的发送功率的配置信息和/或上行时间提前量的配置信息。
  42. 根据权利要求33-41中任一项所述的方法，其特征在于，所述方法还包括：
    所述目标小区基站广播第二指示信息，所述第二指示信息用于指示所述目标小区基站支持优化随机接入过程中的参数的功能，所述第二指示信息用于指示终端设备向所述目标小区基站发送所述第一信息。
  43. 根据权利要求33-42中任一项所述的方法，其特征在于，所述方法还包括：所述目标小区基站通过系统消息广播更新后的或配置的前导码的发送功率的配置信息和/或上行时间提前量的配置信息。
  44. 一种终端设备，其特征在于，包括通信单元，所述通信单元用于：
    向目标小区基站发起随机接入；
    向所述目标小区基站发送第一信息，所述第一信息包括以下信息中的至少一种：用于发送前导码的功率参数和上行时间提前量。
  45. 根据权利要求44所述的终端设备，其特征在于，所述第一信息还包括以下信息中的至少一种：所述终端设备进行随机接入使用的前导码，目标小区的标识信息，目标小区的信号质量，所述终端设备 使用的波束索引，目标小区中的至少一个波束的信号质量，目标小区中至少一个波束的信号质量的排序和所述终端设备的位置信息。
  46. 根据权利要求45所述的终端设备，其特征在于，所述目标小区的信号质量包括以下信息中的至少一种：所述目标小区的参考信号接收功率RSRP，所述目标小区的参考信号接收质量RSRQ，所述目标小区的信号与干扰加噪声比SINR。
  47. 根据权利要求45或46所述的终端设备，其特征在于，所述目标小区中的至少一个波束的信号质量包括以下信息中的至少一种：所述至少一个波束的RSRP以及所述至少一个波束的索引，所述至少一个波束的RSRQ以及所述至少一个波束的索引，所述至少一个波束的SINR以及所述至少一个波束的索引。
  48. 根据权利要求44-47中任一项所述的终端设备，其特征在于，所述用于发送前导码的功率参数包括随机接入过程中的功率攀升次数和/或所述终端设备的功率等级。
  49. 根据权利要求44-48中任一项所述的终端设备，其特征在于，所述第一信息包括所述用于发送前导码的功率参数，所述第一信息还包括以下信息中的至少一种：目标小区的信号质量，目标小区中的至少一个波束的信号质量，目标小区中至少一个波束的信号质量的排序和所述终端设备的位置信息。
  50. 根据权利要求44-49中任一项所述的终端设备，其特征在于，所述第一信息包括所述上行时间提前量，所述第一信息还包括以下信息中的至少一种：目标小区的信号质量，目标小区中的至少一个波束的信号质量，目标小区中至少一个波束的信号质量的排序和所述终端设备的位置信息。
  51. 根据权利要求44-50中任一项所述的终端设备，其特征在于，所述第一信息是所述终端设备在随机接入完成后向所述目标小区基站发送的。
  52. 根据权利要求44-51中任一项所述的终端设备，其特征在于，所述通信单元用于：
    在所述目标小区基站支持优化用于随机接入的参数的功能的情况下，向所述目标小区基站发送所述第一信息。
  53. 根据权利要求44-52中任一项所述的终端设备，其特征在于，所述通信单元用于：
    接收所述目标小区基站发送的请求消息，所述请求消息用于指示所述终端设备向所述目标小区基站发送所述第一信息；
    基于所述请求消息，向所述目标小区基站发送所述第一信息。
  54. 根据权利要求53所述的终端设备，其特征在于，所述通信单元还用于：
    在随机接入成功后，向所述目标小区基站发送第一指示信息，所述第一指示信息用于指示所述终端设备中记录有所述第一信息；
    接收所述目标小区基站基于所述第一指示信息发送的所述请求消息。
  55. 根据权利要求54所述的终端设备，其特征在于，所述通信单元用于：
    接收所述目标小区基站发送的第二指示信息，所述第二指示信息用于指示所述目标小区基站支持优化用于随机接入的参数的能力；
    基于所述第二指示信息，向所述目标小区基站发送所述第一指示信息。
  56. 根据权利要求55所述的终端设备，其特征在于，所述第二指示信息是所述目标小区基站通过系统消息广播的。
  57. 根据权利要求54-56中任一项所述的终端设备，其特征在于，所述第一指示信息承载在以下消息中的至少一种中：无线资源控制RRC连接建立完成消息，RRC重建立完成消息和RRC连接恢复完成消息。
  58. 根据权利要求44-57中任一项所述的终端设备，其特征在于，所述终端设备还包括处理单元，所述处理单元用于：
    在随机接入过程中，记录所述第一信息；或，
    在随机接入完成后，记录所述第一信息。
  59. 根据权利要求58所述的终端设备，其特征在于，所述第一信息是在以下时刻中的至少一个时刻记录的：所述终端设备接收到所述目标小区基站发送的随机接入响应消息的时刻，所述终端设备发送前导码的时刻，所述终端设备随机接入完成的时刻。
  60. 根据权利要求59所述的终端设备，其特征在于，所述终端设备向所述目标小区基站发起的随机接入为基于竞争的随机接入，所述终端设备随机接入成功的时刻包括所述终端设备接收到竞争解决成功的消息的时刻。
  61. 根据权利要求59或60所述的终端设备，其特征在于，所述终端设备向所述目标小区基站发起的随机接入为基于非竞争的随机接入，所述终端设备随机接入成功的时刻包括所述终端设备接收到随机接入响应消息的时刻。
  62. 根据权利要求44-61中任一项所述的终端设备，其特征在于，所述上行时间提前量是从随机接入响应消息中获取的。
  63. 根据权利要求44-62中任一项所述的终端设备，其特征在于，所述第一信息用于所述目标小区基站更新或配置上行时间提前量和/或前导码的发送功率。
  64. 一种终端设备，其特征在于，包括：
    通信单元，用于接收目标小区基站发送的更新后的第一配置信息，所述第一配置信息包括以下信息中的至少一种：前导码的发送功率的配置信息，上行时间提前量的配置信息；
    处理单元，用于根据所述更新后的第一配置信息进行随机接入。
  65. 根据权利要求64所述的终端设备，其特征在于，所述前导码的发送功率的配置信息包括以下信息中的至少一种：前导码的期望接收功率，前导码的发射功率偏移量和前导码的发射功率的调整步长。
  66. 根据权利要求64或65所述的终端设备，其特征在于，所述上行时间提前量的配置信息包括上行时间提前量和/或上行时间提前量与第一参数之间的对应关系，所述第一参数包括以下信息中的至少一种：随机接入前导码，目标小区的标识信息，目标小区的信号质量，目标小区中的至少一个波束的信号质量，目标小区中至少一个波束的信号质量的排序，终端设备的位置信息，同步信号块SSB的门限和满足门限的SSB组。
  67. 根据权利要求66所述的终端设备，其特征在于，所述目标小区的信号质量包括以下信息中的至少一种：所述目标小区的参考信号接收功率RSRP，所述目标小区的参考信号接收质量RSRQ，所述目标小区的信号与干扰加噪声比SINR。
  68. 根据权利要求66或67中任一项所述的终端设备，其特征在于，所述目标小区中的至少一个波束的信号质量包括以下信息中的至少一种：所述至少一个波束的RSRP以及所述至少一个波束的索引，所述至少一个波束的RSRQ以及所述至少一个波束的索引，所述至少一个波束的SINR以及所述至少一个波束的索引。
  69. 根据权利要求64-68中任一项所述的终端设备，其特征在于，所述处理单元用于：
    将存储的第二配置信息更新为所述第一配置信息，所述第二配置信息为所述终端设备在接收所述第一配置信息之前，所述目标小区基站发送的配置信息。
  70. 根据权利要求64-69中任一项所述的终端设备，其特征在于，所述第一配置信息是在所述终端设备正在使用所述第二配置信息进行随机接入的情况下接收的，所述处理单元用于：
    控制所述终端设备停止使用所述第二配置信息进行随机接入；
    控制所述终端设备使用所述第一配置信息进行随机接入。
  71. 根据权利要求64-69中任一项所述的终端设备，其特征在于，所述第一配置信息是在所述终端设备正在使用所述第二配置信息进行随机接入的情况下接收的，所述处理单元用于：
    控制所述终端设备继续使用所述第二配置信息进行随机接入；
    在使用所述第二配置信息的随机接入失败后，控制所述终端设备使用所述第一配置信息进行随机接入。
  72. 根据权利要求64-71中任一项所述的终端设备，其特征在于，所述第一配置信息包括更新后的所述前导码的发送功率的配置信息，所述通信单元用于：
    使用更新后的所述前导码的发送功率的配置信息进行随机接入。
  73. 根据权利要求64-72中任一项所述的终端设备，其特征在于，所述第一配置信息包括上行时间提前量的配置信息，所述通信单元用于：
    根据所述上行时间提前量的配置信息，向所述目标小区基站发送随机接入过程中的第一条消息。
  74. 根据权利要求64-73中任一项所述的终端设备，其特征在于，所述上行时间提前量的配置信息包括上行时间提前量与第一参数之间的对应关系，
    所述处理单元用于：根据上行时间提前量的配置信息，以及测量得到的所述第一参数，确定所述终端设备需要使用的目标上行时间提前量，所述第一参数包括以下信息中的至少一种：目标小区的波束信息，目标小区的信号质量，目标小区中的至少一个波束信号质量，所述终端设备的位置信息；
    所述通信单元用于：使用所述目标上行时间提前量向所述目标小区基站发送随机接入过程中的第一条消息。
  75. 根据权利要求64-74中任一项所述的终端设备，其特征在于，所述更新后的第一配置信息是所述终端设备在接收随机接入响应消息之前接收的。
  76. 一种网络设备，其特征在于，所述网络设备为目标小区基站，所述网络设备包括：
    通信单元，用于获取第一信息，所述第一信息包括以下信息中的至少一种：用于发送前导码的功率参数和上行时间提前量；
    处理单元，用于根据所述第一信息，更新或配置随机接入过程中的前导码的发送功率的配置信息和/或上行时间提前量的配置信息。
  77. 根据权利要求76所述的网络设备，其特征在于，所述第一信息还包括以下信息中的至少一种：所述第一信息还包括以下信息中的至少一种：所述终端设备进行随机接入使用的前导码，目标小区的标识信息，目标小区的信号质量，目标小区中的至少一个波束的信号质量，目标小区中至少一个波束的信号质量的排序和所述终端设备的位置信息。
  78. 根据权利要求77所述的网络设备，其特征在于，所述目标小区的信号质量包括以下信息中的至少一种：所述目标小区的参考信号接收功率RSRP，所述目标小区的参考信号接收质量RSRQ，所述目标小区的信号与干扰加噪声比SINR。
  79. 根据权利要求77或78所述的网络设备，其特征在于，所述目标小区中的至少一个波束的信号质量包括以下信息中的至少一种：所述至少一个波束的RSRP以及所述至少一个波束的索引，所述至少一个波束的RSRQ以及所述至少一个波束的索引，所述至少一个波束的SINR以及所述至少一个波束的索引。
  80. 根据权利要求76-79中任一项所述的网络设备，其特征在于，所述前导码的发送功率的配置信息包括以下信息中的至少一种：前导码的期望接收功率，前导码的发射功率偏移量和前导码的发射功率的调整步长。
  81. 根据权利要求76-80中任一项所述的网络设备，其特征在于，所述上行时间提前量的配置信息包括上行时间提前量和/或上行时间提前量与第一参数之间的对应关系，所述第一参数包括以下信息中的至少一种：随机接入前导码，目标小区的标识信息，目标小区的信号质量，目标小区中的至少一个波束的信号质量，目标小区中至少一个波束的信号质量的排序，终端设备的位置信息，同步信号块SSB的门限和满足门限的SSB组。
  82. 根据权利要求76-79中任一项所述的网络设备，其特征在于，所述通信单元用于：
    接收终端设备发送的第一指示信息，所述第一指示信息用于指示所述终端设备中记录有所述第一信息；
    向所述终端设备发送请求消息，所述请求消息用于指示所述终端设备向所述目标小区基站发送所述第一信息。
  83. 根据权利要求82所述的网络设备，其特征在于，所述第一指示信息承载在以下消息中的至少一种中：无线资源控制RRC连接建立完成消息，RRC重建立完成消息和RRC连接恢复完成消息。
  84. 根据权利要求76-83中任一项所述的网络设备，其特征在于，所述通信单元还用于：
    通过系统消息广播更新后的或配置的前导码的发送功率的配置信息和/或上行时间提前量的配置信息。
  85. 根据权利要求76-84中任一项所述的网络设备，其特征在于，所述通信单元还用于：
    广播第二指示信息，所述第二指示信息用于指示所述目标小区基站支持优化随机接入过程中的参数的功能，所述第二指示信息用于指示终端设备向所述目标小区基站发送所述第一信息。
  86. 根据权利要求76-85中任一项所述的网络设备，其特征在于，所述通信单元还用于：通过系统消息广播更新后的更新后的或配置的前导码的发送功率的配置信息和/或上行时间提前量的配置信息。
  87. 一种终端设备，其特征在于，包括：处理器和存储器，该存储器用于存储计算机程序，所述处理器用于调用并运行所述存储器中存储的计算机程序，执行如权利要求1至20中任一项所述的方法。
  88. 一种终端设备，其特征在于，包括：处理器和存储器，该存储器用于存储计算机程序，所述处理器用于调用并运行所述存储器中存储的计算机程序，执行如权利要求21至32中任一项所述的方法。
  89. 一种网络设备，其特征在于，包括：处理器和存储器，该存储器用于存储计算机程序，所述处理器用于调用并运行所述存储器中存储的计算机程序，执行如权利要求33至43中任一项所述的方法。
  90. 一种装置，其特征在于，包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有所述装置的设备执行如权利要求1至20中任一项所述的方法。
  91. 一种装置，其特征在于，包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有所述装置的设备执行如权利要求21至32中任一项所述的方法。
  92. 一种装置，其特征在于，包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有所述装置的设备执行如权利要求33至43中任一项所述的方法。
  93. 一种计算机可读存储介质，其特征在于，用于存储计算机程序，所述计算机程序使得计算机执行如权利要求1至20中任一项所述的方法。
  94. 一种计算机可读存储介质，其特征在于，用于存储计算机程序，所述计算机程序使得计算机执行如权利要求21至32中任一项所述的方法。
  95. 一种计算机可读存储介质，其特征在于，用于存储计算机程序，所述计算机程序使得计算机执行如权利要求33至43中任一项所述的方法。
  96. 一种计算机程序产品，其特征在于，包括计算机程序指令，该计算机程序指令使得计算机执行如权利要求1至20中任一项所述的方法。
  97. 一种计算机程序产品，其特征在于，包括计算机程序指令，该计算机程序指令使得计算机执行如权利要求21至32中任一项所述的方法。
  98. 一种计算机程序产品，其特征在于，包括计算机程序指令，该计算机程序指令使得计算机执行如权利要求33至43中任一项所述的方法。
  99. 一种计算机程序，其特征在于，所述计算机程序使得计算机执行如权利要求1至20中任一项所述的方法。
  100. 一种计算机程序，其特征在于，所述计算机程序使得计算机执行如权利要求21至32中任一项所述的方法。
  101. 一种计算机程序，其特征在于，所述计算机程序使得计算机执行如权利要求33至43中任一项所述的方法。
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