WO2019029508A1 - 随机接入方法、终端、网络设备及计算机可读存储介质 - Google Patents

随机接入方法、终端、网络设备及计算机可读存储介质 Download PDF

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Publication number
WO2019029508A1
WO2019029508A1 PCT/CN2018/099118 CN2018099118W WO2019029508A1 WO 2019029508 A1 WO2019029508 A1 WO 2019029508A1 CN 2018099118 W CN2018099118 W CN 2018099118W WO 2019029508 A1 WO2019029508 A1 WO 2019029508A1
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Prior art keywords
random access
rach resource
rach
candidate
resource
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PCT/CN2018/099118
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English (en)
French (fr)
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陈力
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维沃移动通信有限公司
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Priority to EP18843404.7A priority Critical patent/EP3668249A4/en
Priority to US16/637,252 priority patent/US11368983B2/en
Publication of WO2019029508A1 publication Critical patent/WO2019029508A1/zh

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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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H04W36/085—Reselecting an access point involving beams of access points
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/32—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/08—Upper layer protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0077—Transmission or use of information for re-establishing the radio link of access information of target access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal

Definitions

  • the present disclosure relates to the field of communications technologies, and in particular, to a random access method, a terminal, a network device, and a computer readable storage medium.
  • 5G fifth-generation
  • NR new Radio
  • High-frequency communication can provide a wider system bandwidth, and the antenna size can be smaller, which is more advantageous for large-scale antenna deployment in a base station and a terminal (User Equipment, UE for short).
  • high-frequency communication has the disadvantages of large path loss, easy interference, and weak link.
  • Large-scale antenna technology can provide large antenna gain. Therefore, the combination of high-frequency communication and large-scale antenna is a 5G mobile communication system. The inevitable trend.
  • a concentrated beam can be used for transmission, but since the beam coverage is narrow, in order to obtain a wider coverage and coverage distance, it can be in different time periods. Signaling is performed on beams in different directions.
  • the base station transmits the downlink signal by using the beam scanning mode.
  • the terminal initiates the uplink random access process, the terminal needs to configure the uplink random access resource corresponding to each downlink beam for the terminal, that is, the physical randomness.
  • the access channel Physical Random Access Channel, hereinafter referred to as PRACH
  • PRACH Physical Random Access Channel
  • the reference signal corresponding to the downlink beam includes a channel state information reference signal (CSI-RS) and/or a synchronization signal block.
  • CSI-RS channel state information reference signal
  • SS block Synchronization Signal block
  • the terminal After selecting the downlink receiving beam, the terminal performs a random access procedure on the uplink PRACH resource corresponding to the downlink receiving beam.
  • a new random access resource is introduced: a beam, and a beam resource or its corresponding SS block needs to be specified at the same time when configuring a random access resource.
  • the terminal performs random access, if the terminal has a dedicated random access channel (dedicated random access channel, hereinafter referred to as "dedicated RACH” resource and a common random access channel (Common Random Access Channel, hereinafter referred to as Common RACH) resources, the terminal The selection cannot be made, and the dedicated random access resources and the common random access resources may be associated with different CSI-RSs and/or SS blocks corresponding to different beams. At this time, the random access resources actually used by the random access cannot be determined.
  • dedicated RACH dedicated random access channel
  • Common RACH Common Random Access Channel
  • the present disclosure provides a random access method, a terminal, a network device, and a computer readable storage medium, to solve the problem that the random access resource actually used by the random access cannot be determined when multiple types of random access resources exist simultaneously. .
  • some embodiments of the present disclosure provide a random access method, applicable to a terminal, including: acquiring a candidate random access RACH resource; selecting a target RACH resource from the candidate RACH resources; wherein the candidate RACH resource includes a common At least one of a RACH resource, a dedicated RACH resource, and an additional RACH resource; a random access procedure is initiated by the target RACH resource.
  • some embodiments of the present disclosure further provide a terminal, including: a first acquiring module, configured to acquire a candidate random access RACH resource; and a selecting module, configured to select a target RACH resource from the candidate RACH resources;
  • the candidate RACH resource includes at least one of a public RACH resource, a dedicated RACH resource, and an additional RACH resource, and a processing module, configured to initiate a random access procedure by using the target RACH resource.
  • some embodiments of the present disclosure provide a terminal including a processor, a memory, and a computer program stored on the memory and executable on the processor, the computer program being executed by the processor
  • the processor implements the steps of the random access method as described above.
  • some embodiments of the present disclosure provide a computer readable storage medium having stored thereon a computer program that, when executed by a processor, implements random access as described above The steps of the method.
  • some embodiments of the present disclosure provide a random access method, which is applied to a network device, including: configuring a random access RACH resource for a random access for a terminal; and sending the candidate RACH resource to the terminal for the terminal Selecting a target RACH resource for initiating a random access procedure from the candidate RACH resources; wherein the candidate RACH resource includes at least one of a public RACH resource, a dedicated RACH resource, and an additional RACH resource.
  • some embodiments of the present disclosure further provide a network device, including: a configuration module, configured to configure a random access candidate random access RACH resource for the terminal, and a sending module, configured to send the candidate RACH resource to the And a terminal, where the terminal selects, from the candidate RACH resources, a target RACH resource used to initiate a random access procedure, where the candidate RACH resource includes at least one of a public RACH resource, a dedicated RACH resource, and an additional RACH resource.
  • some embodiments of the present disclosure provide a network device including a processor, a memory, and a computer program stored on the memory and executable on the processor, the processor executing the computer program The steps of the random access method as described above are implemented.
  • some embodiments of the present disclosure provide a computer readable storage medium having stored thereon a computer program that, when executed by a processor, implements random access as described above The steps of the method.
  • FIG. 1 is a schematic flowchart diagram of a random access method on a terminal side according to some embodiments of the present disclosure
  • FIG. 2 is a schematic diagram showing a contention-based random access procedure
  • Figure 3 shows a schematic diagram of a non-contention based random access procedure
  • FIG. 4 is a block diagram showing the structure of a terminal of some embodiments of the present disclosure.
  • Figure 5 is a block diagram showing the structure of a terminal of some embodiments of the present disclosure.
  • FIG. 6 is a schematic flowchart diagram of a random access method on a network device side according to some embodiments of the present disclosure
  • FIG. 7 is a block diagram showing the structure of a network device of some embodiments of the present disclosure.
  • FIG. 8 is a block diagram showing the structure of a network device of some embodiments of the present disclosure.
  • the present disclosure provides a random access method, a terminal, a network device, and a computer readable storage medium, which can solve the problem that when multiple types of random access resources exist simultaneously, it is impossible to determine the random access resources actually used by the random access. The problem.
  • FIG. 1 is a flow chart showing a method of random access on a terminal side according to some embodiments of the present disclosure.
  • Figure 2 shows a schematic diagram of a contention based random access procedure.
  • Figure 3 shows a schematic diagram of a non-contention based random access procedure.
  • the access control method of some embodiments of the present disclosure is applied to the terminal side, as shown in FIG. 1 , and specifically includes the following steps 11-13 .
  • Step 11 Acquire candidate random access RACH resources.
  • the random access procedure such as the initial radio resource control RRC connection of the terminal.
  • the purpose is to configure different random access RACH resources for the terminal.
  • the candidate RACH resources for obtaining random access especially the candidate RACH resources for obtaining a random access procedure for a specific purpose.
  • the candidate RACH resources include at least one of a Common RACH resource, a Dedicated RACH resource, and an Additional RACH resource.
  • step 11 is specifically: acquiring a candidate RACH resource and a synchronization signal block SS block and/or a channel state information reference signal CSI-RS associated with the candidate RACH resource. That is, the candidate RACH resources have a mapping relationship with the corresponding downlink SS block and/or CSI-RS, and can also be said to be in pairs.
  • the network device configures the candidate RACH resources for the terminal, and must be configured or have a default SS block. And/or CSI-RS resources correspond to it.
  • the public RACH resource includes: a system message (such as an SIB2 or a minimum system message, etc.) delivered by the network device, or a preamble code, a time domain resource, and/or a random sequence for carrying in the RRC message. Frequency domain resources.
  • the public RACH resource may be a shared RACH resource configured by the network device for multiple terminals for a specific purpose, and the different terminals use the resource in a contention manner, and the public RACH resource may also be configured by the network device as a terminal.
  • a public RACH resource can be understood as a default resource for a terminal to perform random access.
  • the dedicated RACH resource includes at least one of the following: a preamble sequence preamble code reserved for the random access by the network device, a time domain resource, and/or a frequency domain resource; here, in particular, the network device is randomly used for a specific purpose.
  • the RACH resource reserved for accessing the resource for example, the RACH resource reserved for the random access procedure of the handover function.
  • the network device reserves RACH resources for random access from the public RACH resources.
  • the preamble sequence, the time domain resource, and/or the frequency domain resource reserved by the network device for the random access from the common RACH resource may be a part of the reserved resource selected from the common RACH resource.
  • At least one of the real-time domain, the frequency domain, and the preamble code is selected from the public RACH resources. It is worth noting that when the same RACH resource is used as a dedicated RACH resource, the associated SS block and/or CSI-RS may be different from the SS block and/or CSI-RS associated with the public RACH resource.
  • the above-mentioned dedicated RACH resource can be used for non-contention based random access (content-free random access, CFRA) process, and can also be applied to contention random access (contention). Based random access, hereinafter referred to as: CBRA) process. If the RACH resource is reserved for each terminal separately, it corresponds to the non-contention random access procedure; if the reserved same RACH resource can be used by multiple terminals, the corresponding random access procedure is corresponding.
  • the additional RACH resources include at least one of the following: the RACH resources reserved by the network device for random access; and specifically, the RACH resources reserved by the network device for random access for other purposes for a specific purpose.
  • the network device reserves the RACH resource of the random access function of the RRC re-establishment function for the random access of the handover function.
  • RACH resources except public RACH resources and dedicated RACH resources; that is, opening new RACH locations (including time domain or frequency domain) in addition to periodic public RACH resources and dedicated RACH resources, opening up new RACH The location is an additional RACH resource.
  • RACH resources associated with other synchronization signal block SS block and/or channel state information reference signal CSI-RS wherein the other SS blocks are in addition to the SS block associated with the common RACH resource and the dedicated RACH resource SS block; other CSI-RSs are CSI-RSs other than CSI-RSs associated with the common RACH resources and dedicated RACH resources. That is, the additional RACH resources may also be: RACH resources associated with SS blocks and/or CSI-RSs outside the SS block and/or CSI-RS corresponding locations associated with the common RACH resources and the dedicated RACH resources.
  • the above-mentioned additional RACH resources can be used for the non-contention random access procedure, and can also be applied to the competitive random access procedure.
  • the SS block and the CSI-RS corresponding to the foregoing common RACH resource, the dedicated RACH resource, and the additional RACH resource may also be other reference signals.
  • Step 12 Select a target RACH resource from the candidate RACH resources.
  • the terminal After obtaining the candidate RACH resources, the terminal needs to select one or more candidate RACH resources as the resources used for random access when performing random access. It should be noted that the candidate RACH resources may include both a contention RACH resource and a non-contention RACH resource.
  • step 12 can be implemented by using the following methods one to three:
  • Manner 1 Select a target RACH resource from the candidate RACH resources according to the SS block and/or the CSI-RS associated with the candidate RACH resource.
  • the candidate RACH resource associated with the SS block and/or the CSI-RS whose signal quality is higher than the first threshold is determined as the target RACH resource. Since the non-competitive RACH resource has a higher advantage than the competing RACH resource, the non-competitive RACH resource in the candidate RACH resource associated with the SS block and/or the CSI-RS whose signal quality is higher than the first threshold may be determined. Target RACH resources.
  • Manner 2 Select a target RACH resource from candidate RACH resources according to a beam receiving quality of a beam corresponding to the candidate RACH resource.
  • the candidate RACH resources corresponding to the first N beams with the best beam receiving quality are determined as target RACH resources; N is a positive integer.
  • the non-competitive RACH resource has a higher advantage than the contention RACH resource, the non-competitive RACH resource in the candidate RACH resource corresponding to the first N beams with the best beam receiving quality may be determined as the target RACH resource.
  • Manner 3 Select a target RACH resource from candidate RACH resources according to a preset priority.
  • the priority referred to herein refers to the priority of the contending RACH resource and the non-contention RACH resource in the candidate RACH resource. Since the non-competitive RACH resource has a higher advantage than the contending RACH resource, one of the candidate RACH resources may be A plurality of non-competitive RACH resources are determined as target RACH resources.
  • Step 13 Initiate a random access procedure through the target RACH resource.
  • the current random access procedure is divided into competitive random access and non-competitive random access.
  • the random access procedure mentioned in step 13 can be either a contention-based random access procedure or a non-competitive one. Random access process.
  • the preamble preamble code of the random access can be sent to the network device through the target RACH resource, whether it is a contention based random access procedure or a non-contention based random access procedure.
  • the contention random access procedure is divided into four steps, and the terminal initiates a random access request to the network device by using a message 1 (Message 1, hereinafter referred to as MSG1), and the random access request is carried in the random access preamble.
  • MSG1 message 1
  • the network device After receiving the random access request, the network device sends a random access response (RAR) to the terminal through Message 2 (hereinafter referred to as MSG2). Since the contention of the same random preamble code is transmitted by the same PRACH resource, the terminal needs to send a message 3 (Message 3) to the network device according to the uplink grant (UL grant) after receiving the message 2. MSG3), and the terminal carries the identification information of the terminal in the third message, and starts the contention resolution timer at the same time as the message three is sent. If the message 4 (Message 4, hereinafter referred to as MSG4) is received by the network device before the contention timer expires, the terminal contention resolution is successful. The network device carries the terminal identification information in the message 4, and the terminal can determine whether the competition is successful according to the received terminal identifier.
  • RAR random access response
  • the terminal initiates a random access request to the network device through the MSG1, and the random access request is carried in the random access preamble code.
  • the network device feeds back the RAR to the terminal through the MSG2, and the terminal determines that the random access is successful after receiving the RAR.
  • the capability of the terminal capability to support simultaneous monitoring of the downlink beam is also different.
  • the step of transmitting the preamble code of the random access preamble to the network device through the target RACH resource is performed.
  • the method includes: sending X preamble codes to the network device on the target RACH resource before the random access response RAR window expires; and sending other preamble codes to the network device after the RAR window expires.
  • X and P are positive integers, and X is less than or equal to P, and other preamble codes are preamble codes other than P preamble codes.
  • the terminal may send a preamble code on the target RACH resource, and then send P-1 preamble codes before the RAR window expires, more than P preambles.
  • the code can be sent after the RAR window expires, but there are no more than P RARs to listen to at the same time.
  • the terminal further includes: sending and sending The random access response RAR is monitored on the downlink beam corresponding to the SS block and/or the CSI-RS associated with the RACH resource of the preamble code. That is, the RAR (or Message 2) is monitored on the SS block and/or CSI-RS resources associated with the target RACH resource.
  • the step of monitoring the random access response RAR on the downlink beam corresponding to the SS block and/or the CSI-RS associated with the target RACH resource may be implemented by: Y RARs are monitored on the downlink beams of the SS block and/or CSI-RS associated with the target RACH resources transmitting the Y preamble codes; wherein Q and Y are positive integers and Y is less than or equal to Q.
  • Q RARs are autonomously selected to be monitored on the downlink beams of the SS block and/or CSI-RS associated with the target RACH resources transmitting the Y' preamble codes; wherein Q is greater than M.
  • the terminal can only listen to one downlink beam at the same time, the terminal listens to the corresponding RAR on the downlink block of the SS block and/or the CSI-RS associated with the RACH resource that transmits the preamble code. For a scenario in which multiple preamble codes are transmitted, the terminal selects one of the downlink blocks associated with the PACH resource that transmits the preamble code and/or the downlink beam of the CSI-RS to listen to the RAR.
  • the terminal can only detect Q downlink beams at the same time, for a scenario in which the number of transmitted preamble codes is not more than Q, the terminal is transmitting the SS block and/or CSI-RS associated with the RACH resource of the preamble code.
  • the downlink beam is used to listen to the corresponding RAR.
  • the terminal selects Q to listen to the corresponding RAR in the downlink block of the SS block and/or the CSI-RS associated with the RACH resource that transmits the preamble code.
  • step 12 specifically includes: determining, by the downlink acquired SS block and/or the CSI-RS candidate RACH resource, as the target RACH resource.
  • step 13 further includes: sending, by the RACH resource associated with the downlink acquired SS block and/or the CSI-RS, a preamble sequence of the random access preamble to the network device.
  • the RACH resource to be associated with the received SS block and/or CSI-RS is determined as the target RACH resource, and the preamble code is transmitted through the corresponding resource.
  • the terminal receives L SS blocks and/or CSI-RSs, the RACH resources associated with the downlink acquired SS block and/or CSI-RS are used before the random access response RAR window expires.
  • the network device sends L' preamble codes; wherein L, L' are positive integers and L' is less than L. That is, after the terminal can send a preamble code on the target RACH resource, the terminal can send L-1 preamble codes before the RAR window expires. More than L preamble codes can be sent after the RAR window expires, but at the same time There are no more than R RARs that need to be monitored.
  • the source base station initiates a handover request to the target base station, and the target base station first performs access control, and after the permission, initiates a handover confirmation message to the source base station, and transparently transmits the necessary configuration required for the terminal access to the source through the handover confirmation message.
  • Base station The source base station initiates a handover command to the terminal, and carries the necessary configuration information required for the transparent transmission of the target base station in the handover command.
  • the terminal After receiving the handover command, the terminal performs cell handover, and sends a handover complete message to the target base station after the handover is completed.
  • Step 11 in some embodiments of the present disclosure is specifically: acquiring candidate RACH resources for random access for handover function. Further, the step of acquiring the candidate RACH resources for the random access of the handover function may be implemented by the following manners one or two or three:
  • Manner 1 Receive a handover command (Handover Command) sent by the network device, and obtain a candidate RACH resource for random access for the handover function from the handover command.
  • the terminal needs to obtain at least one of a public RACH resource, a dedicated RACH resource, and an additional RACH resource, or an SS block or a CSI-RS associated with the candidate RACH resource, which may be received from the received handover command. obtain.
  • the sending process may be implemented in the following manner: after the target base station generates the RRC message, it sends the message to the source base station in a handover command through a transparent container, and the source base station sends the signal to the terminal.
  • the receiving network device sends a handover command carrying at least part (all or part of) a minimum system message (Minimum SI). That is, part or all of the information in the minimum system message is included in the handover command, and is sent to the terminal through RRC signaling or the like; or
  • Manner 2 receiving the high-level signaling sent by the network device, where the high-level signaling refers to the RRC message, and obtains the candidate RACH resource for the random access of the handover function from the high-layer signaling; specifically, the target base station will switch The command is sent to the source base station, and the source base station sends the handover command to the terminal in the RRC signaling.
  • the terminal receives the high layer signaling that is sent by the network device and carries the mobile control message; and obtains the candidate RACH resource for the random access for the handover function from the mobile control message of the high layer signaling. That is, the network device sends the candidate RACH resource in the mobile control message of the high layer signaling; or
  • Manner 3 Obtain a neighboring cell system message, and obtain a candidate RACH resource for random access for the handover function from the neighboring system message.
  • the manner of obtaining the neighboring system message here includes: receiving the neighboring system message directly, or reading the neighboring system message stored by the terminal.
  • the step 12 is specifically implemented by acquiring the first M RACH resources that meet the preset condition after receiving the handover command in the candidate RACH resource; and the first M RACHs.
  • the resource is determined to be the target RACH resource.
  • M is an integer greater than or equal to 1.
  • the step of acquiring the first M RACH resources that meet the preset condition after receiving the handover command in the candidate RACH resource may be implemented as follows:
  • Obtaining the first M candidate RACH resources in the candidate RACH resource after receiving the handover command That is, after receiving the handover command, continue to monitor the M candidate RACH resources that are first acquired, and use the M candidate RACH resources as the target RACH resources;
  • the non-competitive RACH resource has a higher advantage than the contention RACH resource, the non-competitive RACH resource in the one or more candidate RACH resources that are the latest after receiving the handover command may be selected as the target RACH resource;
  • the first M RACH resources associated with the SS block and/or the CSI-RS with the signal quality higher than the preset threshold are obtained. That is, the signal quality of the downlink SS block and/or the CSI-RS is further considered, and after receiving the handover command, the terminal continues to monitor that the signal quality of the first obtained downlink SS block and/or CSI-RS exceeds a preset threshold.
  • the first M candidate RACH resources, and the first M candidate RACH resources are used as the target RACH resources;
  • the first M non-competitive RACH resources associated with the SS block and/or the CSI-RS whose signal quality is higher than the preset threshold are obtained as the target RACH resource. Since the non-competitive RACH resource has a higher advantage than the competitive RACH resource, the last M Ms associated with the SS block and/or the CSI-RS whose signal quality is higher than the preset threshold may be selected after receiving the handover command.
  • Non-competitive RACH resources are used as target RACH resources;
  • the first M RACH resources with the best beam reception quality after receiving the handover command may be acquired in the candidate RACH resources. That is, the terminal selects the first N candidate RACH resources that are the closest to the target RACH resource after receiving the handover command among the candidate RACH resources with the best beam reception quality;
  • the terminal may select the last M non-competitive RACH resources that are the closest to the target RACH resource after receiving the handover command among the candidate RACH resources with the best beam reception quality.
  • the terminal obtains the target RACH resource from the candidate RACH resource by acquiring the candidate RACH resource configured by the network device, and initiates a random access procedure through the target RACH resource to ensure that the simultaneous RACH resource exists simultaneously.
  • the network can be quickly and reliably accessed by selecting appropriate random access resources to achieve specific purposes that random access is expected to achieve, such as RRC connection, RRC re-establishment, and handover.
  • the target cell can be quickly accessed, thereby achieving the purpose of fast handover.
  • the terminal 400 of some embodiments of the present disclosure can implement the method for acquiring candidate random access RACH resources in the foregoing embodiment, selecting the target RACH resource from the candidate RACH resources, and initiating a random access procedure by using the target RACH resource.
  • the terminal 400 specifically includes: a first obtaining module 410, configured to acquire a candidate random access RACH resource; and a selecting module 420, configured to select a target RACH resource from the candidate RACH resources; wherein, the candidate The RACH resource includes at least one of a public RACH resource, a dedicated RACH resource, and an additional RACH resource; and a processing module 430, configured to initiate a random access procedure by using the target RACH resource.
  • the public RACH resource includes: a system message delivered by the network device or a preamble code for the random access, a time domain resource, and/or a frequency domain resource carried in the RRC message.
  • the dedicated RACH resource includes at least one of the following: a preamble sequence reserved by the network device for random access, a time domain resource, and/or a frequency domain resource; and a dedicated synchronization signal block reserved for the random access by the network device.
  • the RACH resource reserved by the network device for the random access from the public RACH resource is: a preamble code, a time domain resource, and/or a frequency domain resource reserved by the network device from the public RACH resource for the random access.
  • the first obtaining module 410 includes: a first acquiring submodule, configured to acquire a candidate RACH resource and a synchronization signal block SS block and/or a channel state information reference signal CSI-RS associated with the candidate RACH resource.
  • the additional RACH resources include at least one of the following: a RACH resource reserved by the network device for random access; and other RACH resources except the public RACH resource and the dedicated RACH resource; and, with other synchronization signal blocks SS block and/or The channel state information reference signal CSI-RS associated RACH resource; wherein the other SS block is an SS block other than the SS block associated with the public RACH resource and the dedicated RACH resource; the other CSI-RS is a shared RACH resource A CSI-RS other than the CSI-RS associated with the dedicated RACH resource.
  • the first obtaining module 410 includes: a second acquiring sub-module, configured to acquire candidate RACH resources for random access for the switching function.
  • the second obtaining sub-module includes: a first acquiring unit, configured to receive a handover command sent by the network device, and obtain a candidate RACH resource for random access for the handover function from the handover command; or, the second acquiring unit, Acquiring, by the high-level signaling sent by the network device, the candidate RACH resource for the random access of the handover function, or the third acquiring unit, for acquiring the neighboring system message, from the neighboring system message Obtaining candidate RACH resources for random access for handover functions.
  • the second obtaining unit includes: a first receiving subunit, configured to receive a high layer signaling that is sent by the network device and that carries the mobile control message; and a first acquiring subunit, configured to obtain, from the mobile control message of the high layer signaling Candidate RACH resources for random access for handover functions.
  • the first obtaining module 410 includes: a second receiving subunit, configured to receive a switching command that is sent by the network device and carries at least a part of a minimum system message.
  • the selecting module includes: a third acquiring sub-module, configured to obtain the first M RACH resources after receiving the handover command in the candidate RACH resource; where M is an integer greater than or equal to 1;
  • the target RACH resource is determined according to the first M RACH resources.
  • the third obtaining sub-module includes: a fourth acquiring unit, configured to acquire a first M candidate RACH resources after receiving the handover command in the candidate RACH resource; or a fifth acquiring unit, configured to acquire the candidate RACH resource The first M non-competitive RACH resources are received after the handover command is received.
  • the sixth acquisition unit is configured to obtain, after receiving the handover command, the first M and the SS with the signal quality higher than the preset threshold.
  • the third obtaining unit includes: a third receiving subunit, configured to receive a neighboring system message, or a read subunit, configured to read a neighboring system message stored by the terminal.
  • the selecting module includes: a first selecting submodule, configured to select a target RACH resource from the candidate RACH resources according to the SS block and/or the CSI-RS associated with the candidate RACH resource; or, the second selecting submodule, The target RACH resource is selected from the candidate RACH resources according to the beam reception quality of the downlink beam corresponding to the candidate RACH resource; or the third selection submodule is configured to select the target RACH resource from the candidate RACH resources according to the preset priority. .
  • the first selection sub-module includes: a first determining unit, configured to determine, as the target RACH resource, candidate RACH resources associated with the SS block and/or the CSI-RS whose signal quality is higher than the first threshold.
  • the first determining unit includes: a first determining subunit, configured to determine, in the candidate RACH resource associated with the SS block and/or the CSI-RS whose signal quality is higher than the first threshold, the non-competitive RACH resource. Target RACH resources.
  • the second selection sub-module includes: a second determining unit, configured to determine a candidate RACH resource corresponding to the first N beams with the best beam receiving quality as the target RACH resource; and N is a positive integer.
  • the second determining unit includes: a second determining sub-unit, configured to determine, as the target RACH resource, the non-competitive RACH resource in the candidate RACH resources corresponding to the first N beams with the best beam receiving quality.
  • the processing module includes: a first sending submodule, configured to send, by using the target RACH resource, a preamble code of the random access preamble to the network device.
  • the first sending sub-module includes: a first sending unit, configured to: when the terminal has the capability of simultaneously monitoring P downlink beams, send X to the network device on the target RACH resource before the random access response RAR window expires a preamble code, where X and P are both positive integers and X is less than or equal to P; and a second sending unit is configured to send other preamble codes to the network device after the RAR window expires; wherein the other preamble codes are P except Preamble code other than the preamble code.
  • the processing module further includes: a monitoring submodule, configured to monitor the random access response RAR on the downlink beam corresponding to the SS block and/or the CSI-RS associated with the RACH resource that sends the preamble code.
  • a monitoring submodule configured to monitor the random access response RAR on the downlink beam corresponding to the SS block and/or the CSI-RS associated with the RACH resource that sends the preamble code.
  • the monitoring submodule includes: a first monitoring unit, configured to: when the terminal has the capability of simultaneously monitoring the Q downlink beams, the SS block and/or the CSI-RS associated with the target RACH resource that sends the Y preamble codes.
  • a first monitoring unit configured to: when the terminal has the capability of simultaneously monitoring the Q downlink beams, the SS block and/or the CSI-RS associated with the target RACH resource that sends the Y preamble codes.
  • Y RARs On the downlink beam, Y RARs are monitored; wherein Q and Y are positive integers, Y is less than or equal to Q; and a second monitoring unit is used for SS blocks and/or associated with target RACH resources that transmit Y' preamble codes.
  • Q is greater than M.
  • the selecting module further includes: a fourth selecting submodule, configured to determine, as the target RACH resource, the downlink RSP resource and the candidate RACH resource associated with the CSI-RS.
  • the processing module includes: a second sending submodule, configured to send a preamble sequence preamble code of the random access to the network device by using the candidate RACH resource associated with the downlink acquired SSblock and/or the CSI-RS.
  • the second sending sub-module includes: a third sending unit, configured to: when the terminal receives L SSblocks and/or CSI-RSs, before the random access response RAR window expires, by using the SS block obtained with the downlink / or CSI-RS associated RACH resources, send L' preamble codes to the network device; wherein L, L' are positive integers, L' is less than or equal to L.
  • the terminal of some embodiments of the present disclosure obtains the target RACH resource from the candidate RACH resource by acquiring the candidate RACH resource configured by the network device, and initiates a random access procedure through the target RACH resource to ensure that there are many concurrent
  • the network is quickly and reliably accessed by selecting an appropriate random access resource, so as to achieve a specific purpose that the random access is expected to reach, such as RRC connection, RRC re-establishment, and handover.
  • the target cell can be quickly accessed, thereby achieving the purpose of fast handover.
  • some embodiments of the present disclosure also provide a terminal, including a processor, a memory, and a computer program stored on the memory and operable on the processor, the processor executing the computer program The steps in the random access method as described above are implemented.
  • Some embodiments of the present disclosure also provide a computer readable storage medium having stored thereon a computer program that, when executed by a processor, implements the steps of the random access method as described above.
  • the computer readable storage medium referred to in this disclosure may be volatile or non-volatile, or transient or non-transitory.
  • FIG. 5 is a structural block diagram of a terminal 500 of the present disclosure.
  • the terminal shown in FIG. 5 includes at least one processor 501, a memory 502, a user interface 503, and a network interface 504.
  • the various components in terminal 500 are coupled together by a bus system 505.
  • bus system 505 is used to implement connection communication between these components.
  • the bus system 505 includes a power bus, a control bus, and a status signal bus in addition to the data bus.
  • various buses are labeled as bus system 505 in FIG.
  • the user interface 503 can include a display or a pointing device (eg, a touchpad or touch screen, etc.).
  • memory 502 in some embodiments of the present disclosure can be either volatile memory or non-volatile memory, or can include both volatile and nonvolatile memory.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read only memory (PROM), an erasable programmable read only memory (Erasable PROM, EPROM), or an electric Erase programmable read only memory (EEPROM) or flash memory.
  • the volatile memory can be a Random Access Memory (RAM) that acts as an external cache.
  • RAM Random Access Memory
  • many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (Synchronous DRAM).
  • SDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • DDRSDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • ESDRAM Enhanced Synchronous Dynamic Random Access Memory
  • SDRAM Synchronous Connection Dynamic Random Access Memory
  • DRRAM direct memory bus random access memory
  • memory 502 stores elements, executable modules or data structures, or a subset thereof, or their extended set: operating system 5021 and application 5022.
  • the operating system 5021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, for implementing various basic services and processing hardware-based tasks.
  • the application 5022 includes various applications, such as a media player (Media Player), a browser (Browser), etc., for implementing various application services. Programs that implement some of the embodiment methods of the present disclosure may be included in the application 5022.
  • the terminal 500 further includes: a computer program stored on the memory 502 and executable on the processor 501, and specifically, may be a computer program in the application 5022, the computer program being executed by the processor 501
  • the time processor 501 implements the steps of: acquiring a candidate random access RACH resource; selecting a target RACH resource from the candidate RACH resources; wherein the candidate RACH resource includes at least one of a public RACH resource, a dedicated RACH resource, and an additional RACH resource. A method of initiating a random access procedure by using the target RACH resource.
  • Processor 501 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 501 or an instruction in a form of software.
  • the processor 501 may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or the like. Programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • the methods, steps, and logical block diagrams disclosed in some embodiments of the present disclosure may be implemented or performed.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the steps of the method disclosed in connection with some embodiments of the present disclosure may be directly embodied by the hardware decoding processor, or by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in memory 502, and processor 501 reads the information in memory 502 and, in conjunction with its hardware, performs the steps of the above method.
  • the embodiments described herein can be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof.
  • the processing unit can be implemented in one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSP devices, DSPDs), programmable Programmable Logic Device (PLD), Field-Programmable Gate Array (FPGA), general purpose processor, controller, microcontroller, microprocessor, other for performing the functions described herein In an electronic unit or a combination thereof.
  • ASICs application specific integrated circuits
  • DSPs digital signal processors
  • DSP devices digital signal processing devices
  • DSPDs digital signal processing devices
  • PLD programmable Programmable Logic Device
  • FPGA Field-Programmable Gate Array
  • the techniques described herein can be implemented by modules (eg, procedures, functions, and so on) that perform the functions described herein.
  • the software code can be stored in memory and executed by the processor.
  • the memory can be implemented in the processor or external to the processor.
  • the public RACH resource includes: a system message delivered by the network device or a preamble code for the random access, a time domain resource, and/or a frequency domain resource carried in the RRC message.
  • the dedicated RACH resource includes at least one of the following: a preamble sequence reserved by the network device for random access, a time domain resource, and/or a frequency domain resource; and a dedicated synchronization signal block reserved for the random access by the network device.
  • the RACH resource reserved by the network device for the random access from the public RACH resource is: a preamble code, a time domain resource, and/or a frequency domain resource reserved by the network device from the public RACH resource for the random access.
  • the processor 501 may further implement the steps of: acquiring candidate RACH resources and a synchronization signal block SS block and/or a channel state information reference signal CSI-RS associated with the candidate RACH resources.
  • the additional RACH resources include at least one of the following: a RACH resource reserved by the network device for random access; and other RACH resources except the public RACH resource and the dedicated RACH resource; and, with other synchronization signal blocks SS block and/or The channel state information reference signal CSI-RS associated RACH resource; wherein the other SS block is an SS block other than the SS block associated with the public RACH resource and the dedicated RACH resource; the other CSI-RS is a shared RACH resource A CSI-RS other than the CSI-RS associated with the dedicated RACH resource.
  • the following steps may also be implemented: acquiring candidate RACH resources for random access for the handover function.
  • the processor 501 may further implement the following steps: receiving a handover command sent by the network device, acquiring a candidate RACH resource for random access for the handover function from the handover command; or receiving the network
  • the high-level signaling sent by the device obtains the candidate RACH resource for the random access of the handover function from the high-layer signaling; or acquires the neighbor system message, and obtains the random access for the handover function from the neighbor system message Candidate RACH resources.
  • the processor 501 may further implement the following steps: receiving high-level signaling that is sent by the network device and carrying the mobile control message; and acquiring, from the mobile control message of the high-layer signaling, the function for switching Candidate RACH resources for random access.
  • the processor 501 may further implement the step of receiving a handover command sent by the network device and carrying at least part of the minimum system message.
  • the processor 501 may further implement the following steps: acquiring, among the candidate RACH resources, the first M RACH resources that meet the preset condition after receiving the handover command; wherein, M is greater than or equal to An integer of 1; the first M RACH resources are determined as target RACH resources.
  • the processor 501 may further implement the following steps: acquiring the first M candidate RACH resources in the candidate RACH resource after receiving the handover command; or acquiring the handover in the candidate RACH resource.
  • the first M non-competitive RACH resources after the command; or, after acquiring the handover command, the first M are associated with the SS block and/or the CSI-RS whose signal quality is higher than the preset threshold.
  • the first M non-competitive RACH resources associated with the SS block and/or the CSI-RS with the signal quality higher than the preset threshold are determined as the target RACH resources; or, obtain the first M RACH resources of the candidate RACH resources that have the best beam reception quality after receiving the handover command; or, before acquiring the handover command, and obtaining the best beam reception quality in the candidate RACH resources M non-competitive RACH resources.
  • the processor 501 may further implement the steps of: receiving a neighbor system message, or reading a neighbor system message stored by the terminal.
  • the processor 501 may further implement the steps of: selecting a target RACH resource from the candidate RACH resources according to the SS block and/or the CSI-RS associated with the candidate RACH resource; or, according to Selecting a target RACH resource from the candidate RACH resources according to a preset priority, and selecting a target RACH resource from the candidate RACH resources according to a preset priority.
  • the processor 501 may further implement the step of determining a candidate RACH resource associated with the SS block and/or the CSI-RS with a signal quality higher than the first threshold as a target. RACH resources.
  • the processor 501 may further implement the step of non-competing among the candidate RACH resources associated with the SS block and/or the CSI-RS whose signal quality is higher than the first threshold.
  • the RACH resource is determined as the target RACH resource.
  • the processor 501 may further implement the steps of: determining the candidate RACH resources corresponding to the first N beams with the best beam reception quality as the target RACH resources; N is a positive integer.
  • the processor 501 may further implement the step of determining, as the target RACH resource, the non-competitive RACH resource in the candidate RACH resources corresponding to the first N beams with the best beam reception quality.
  • the processor 501 may further implement the step of: transmitting, by the target RACH resource, a random access preamble code preamble code to the network device.
  • the following steps may be implemented: sending the X to the network device on the target RACH resource before the random access response RAR window expires.
  • Preamble code wherein X and P are positive integers, and X is less than or equal to P; after the RAR window expires, other preamble codes are sent to the network device; wherein the other preamble codes are preambles other than P preamble codes code.
  • the processor 501 may further implement the step of monitoring the random access response RAR on the downlink beam corresponding to the SS block and/or the CSI-RS associated with the RACH resource that transmits the preamble code. .
  • the computer program may be implemented by the processor 501 to perform the following steps: SS block and/or CSI associated with the target RACH resource that transmits the Y preamble codes.
  • - Y RARs are monitored on the downlink beam of the RS; wherein Q, Y are positive integers, Y is less than or equal to Q; SS blocks and/or CSI-RSs associated with target RACH resources transmitting Y' preamble codes
  • the Q RARs are independently selected for monitoring; wherein Q is greater than M.
  • the processor 501 may further implement the step of determining the downlink acquired SS block and/or the CSI-RS associated candidate RACH resource as the target RACH resource.
  • the processor 501 may further implement the step of: transmitting a preamble of the random access to the network device by using the candidate RACH resource associated with the downlink SS block and/or the CSI-RS. Sequence preamble code.
  • the terminal when the terminal receives L SS blocks and/or CSI-RSs, when the computer program is executed by the processor 501, the following steps may be implemented: before the random access response RAR window expires, the SS obtained through the downlink is obtained.
  • the block and/or the CACH-RS associated RACH resource sends L' preamble codes to the network device; wherein L, L' are positive integers and L' is less than or equal to L.
  • the terminal may be a wireless terminal or a wired terminal, and the wireless terminal may be a device that provides voice and/or other service data connectivity to the user, a handheld device with a wireless connection function, or other processing device connected to the wireless modem. .
  • the wireless terminal can communicate with one or more core networks via a Radio Access Network (RAN), which can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a mobile terminal.
  • RAN Radio Access Network
  • the computer for example, can be a portable, pocket, handheld, computer built-in or in-vehicle mobile device that exchanges language and/or data with the wireless access network.
  • a wireless terminal may also be called a system, a Subscriber Unit, a Subscriber Station, a Mobile Station, a Mobile, a Remote Station, or a Remote Terminal.
  • the access terminal, the user terminal (User Terminal), the user agent (User Agent), and the user device (User Device or User Equipment) are not limited herein.
  • a terminal of some embodiments of the present disclosure obtains a target RACH resource from a candidate RACH resource by acquiring a candidate RACH resource configured by the network device, and initiates a random access procedure by using the target RACH resource to ensure that multiple types of random connections exist simultaneously.
  • the network is quickly and reliably accessed by selecting appropriate random access resources to achieve specific purposes that random access is expected to achieve, such as RRC connection, RRC re-establishment, and handover.
  • the target cell can be quickly accessed, thereby achieving the purpose of fast handover.
  • FIG. 6 is a schematic flowchart diagram of a random access method on a network device side according to some embodiments of the present disclosure. As shown in FIG. 6, the random access method of some embodiments of the present disclosure is applied to a network device, and specifically includes the following steps 61-62.
  • Step 61 Configure a random access candidate random access RACH resource for the terminal.
  • various purposes can be achieved, such as initial radio resource control RRC connection establishment, RRC reestablishment, handover, downlink data arrival but downlink out-of-synchronization, uplink data arrival but uplink out-of-synchronization, and terminal transition from inactive state to The active state and the uplink synchronization acquisition of the secondary cell, etc., so the network device configures different random access RACH resources for the terminal based on the purpose of different random access.
  • the candidate RACH resources for obtaining random access especially the candidate RACH resources for obtaining a random access procedure of a specific purpose.
  • step 61 includes configuring, for the terminal, a candidate RACH resource for random access and a synchronization signal block SS block and/or a channel state information reference signal CSI-RS associated with the candidate RACH resource. That is, the candidate RACH resources have a mapping relationship with the corresponding downlink SS block and/or CSI-RS, and can also be said to be in pairs.
  • the network device configures the candidate RACH resources for the terminal, and the SS block and/or CSI must be configured. -RS resources.
  • Step 62 Send the candidate RACH resource to the terminal.
  • the candidate RACH resource includes at least one of a public RACH resource, a dedicated RACH resource, and an additional RACH resource.
  • the network device sends the candidate RACH resource to the terminal, where the terminal selects, from the candidate RACH resources, the target RACH resource used to initiate the random access procedure.
  • the common RACH resource includes: a system message delivered by the network device or a preamble preamble code, a time domain resource, and/or a frequency domain resource carried in the RRC message for random access.
  • the dedicated RACH resource includes at least one of the following: a preamble sequence reserved by the network device for random access, a time domain resource, and/or a frequency domain resource; and a dedicated synchronization signal block SS block reserved for the random access by the network device. And/or the RACH resource associated with the channel state information reference signal CSI-RS; and the RACH resource reserved by the network device for the random access from the common RACH resource.
  • the RACH resource reserved by the network device for the random access from the public RACH resource is: a preamble code, a time domain resource, and/or a frequency domain resource reserved by the network device from the public RACH resource for the random access.
  • the dedicated RACH resource mentioned above can be used for a non-contention random access procedure, and can also be applied to a competitive random access procedure.
  • the additional RACH resources include at least one of: RACH resources reserved by the network device for random access; RACH resources other than the public RACH resources and dedicated RACH resources; and, with other synchronization signal blocks SS block and/or The channel state information reference signal CSI-RS associated RACH resource; wherein the other SS block is an SS block other than the SS block associated with the common RACH resource and the dedicated RACH resource; the other CSI-RS is a division A CSI-RS other than a CSI-RS associated with a public RACH resource and a dedicated RACH resource.
  • the above-mentioned additional RACH resources can be used for the non-contention random access procedure, and can also be applied to the competitive random access procedure.
  • the SS block and the CSI-RS corresponding to the foregoing common RACH resource, the dedicated RACH resource, and the additional RACH resource may also be other reference signals.
  • Step 61 specifically includes: configuring a candidate RACH resource for random access of the handover function for the terminal.
  • the step of configuring the candidate RACH resource for the random access of the handover function for the terminal includes: transmitting, to the terminal, a handover command carrying the candidate RACH resource for the random access for the handover function; wherein the handover command further carries at least a part of the minimum
  • the system message that is, the handover command carries some or all of the minimum system messages.
  • the source base station initiates a handover request to the target base station, and the target base station first performs access control, and after the permission, initiates a handover confirmation message to the source base station, and transparently transmits the necessary configuration required for the terminal access to the source through the handover confirmation message.
  • Base station The source base station initiates a handover command to the terminal, and carries the necessary configuration information required for the transparent transmission of the target base station in the handover command;
  • the high-level signaling carrying the candidate RACH resource of the random access for the handover function; specifically, transmitting, by using the high-layer signaling, the mobile control of the candidate RACH resource carrying the random access for the handover function Message. That is, the network device sends the candidate RACH resource in the mobile control message of the high layer signaling;
  • a system message carrying a candidate RACH resource for random access for handover function is broadcast. That is to say, the network device sends the candidate RACH resource for the random access of the handover function to the terminal or the neighboring terminal by broadcasting the system message.
  • the network device configures one or more candidate RACH resources for the terminal and sends the same to the terminal, and the terminal determines the target RACH for random access from the candidate RACH resources to ensure different purposes.
  • the random access process is implemented normally. In particular, when used to switch scenarios, the terminal can be quickly accessed to the target cell, thereby achieving the purpose of fast handover.
  • the network device 700 of some embodiments of the present disclosure can implement the details of the random access method in the foregoing embodiment, and achieve the same effect.
  • the network device 700 specifically includes the following functional modules: a configuration module 710. a candidate random access RACH resource for configuring a random access for the terminal; and a sending module 720, configured to send the candidate RACH resource to the terminal, where the terminal selects a target RACH for initiating a random access procedure from the candidate RACH resources.
  • a resource wherein the candidate RACH resource includes at least one of a public RACH resource, a dedicated RACH resource, and an additional RACH resource.
  • the public RACH resource includes: a system message delivered by the network device or a preamble code for the random access, a time domain resource, and/or a frequency domain resource carried in the RRC message.
  • the dedicated RACH resource includes at least one of the following: a preamble sequence reserved by the network device for random access, a time domain resource, and/or a frequency domain resource; and a dedicated synchronization signal block reserved for the random access by the network device.
  • the RACH resource reserved by the network device for the random access from the public RACH resource is: a preamble code, a time domain resource, and/or a frequency domain resource reserved by the network device from the public RACH resource for the random access.
  • the configuration module 710 includes: a first configuration sub-module, configured to configure a random access candidate RACH resource and a synchronization signal block SS block and/or a channel state information reference signal CSI-RS associated with the candidate RACH resource for the terminal.
  • the additional RACH resources include at least one of the following: a RACH resource reserved by the network device for random access; and other RACH resources except the public RACH resource and the dedicated RACH resource; and, with other synchronization signal blocks SS block and/or The channel state information reference signal CSI-RS associated RACH resource; wherein the other SS block is an SS block other than the SS block associated with the public RACH resource and the dedicated RACH resource; the other CSI-RS is a shared RACH resource A CSI-RS other than the CSI-RS associated with the dedicated RACH resource.
  • the configuration module 710 includes: a second configuration sub-module, configured to configure, for the terminal, a candidate RACH resource for random access of the handover function.
  • the second configuration sub-module includes: a first configuration unit, configured to send, to the terminal, a handover command that carries a candidate RACH resource for the random access for the handover function; or a second configuration unit, configured to send the bearer to the terminal The high-level signaling of the candidate RACH resource for the random access of the handover function; or the second configuration unit is configured to broadcast a system message carrying the candidate RACH resource for the random access for the handover function.
  • the handover command also carries at least part of the minimum system message.
  • the sending module 720 further includes: a third sending submodule, configured to send, by using the high layer signaling, a mobile control message carrying the candidate RACH resource of the random access for the handover function to the terminal.
  • the network device of some embodiments of the present disclosure configures one or more candidate RACH resources for the terminal and sends the same to the terminal, and the terminal determines the target RACH for random access from the candidate RACH resources to ensure different purposes.
  • the random access process is implemented normally. In particular, when used to switch scenarios, the terminal can be quickly accessed to the target cell, thereby achieving the purpose of fast handover.
  • each module of the above network device and terminal is only a division of logical functions. In actual implementation, it may be integrated into one physical entity in whole or in part, or may be physically separated. And these modules can all be implemented by software in the form of processing component calls; they can also be implemented in hardware form; some modules can be implemented by the processing component calling software, and some modules are realized by hardware.
  • the determining module may be a separately set processing element, or may be integrated in one of the above-mentioned devices, or may be stored in the memory of the above device in the form of program code, by a processing element of the above device. Call and execute the functions of the above determination module.
  • the implementation of other modules is similar.
  • all or part of these modules can be integrated or implemented independently.
  • the processing elements described herein can be an integrated circuit that has signal processing capabilities. In the implementation process, each step of the above method or each of the above modules may be completed by an integrated logic circuit of hardware in the processor element or an instruction in a form of software.
  • the above modules may be one or more integrated circuits configured to implement the above method, such as one or more Application Specific Integrated Circuits (ASICs), or one or more digital signal processors. (digital signal processor, DSP for short), or one or more Field Programmable Gate Array (FPGA).
  • ASICs Application Specific Integrated Circuits
  • DSP digital signal processor
  • FPGA Field Programmable Gate Array
  • the processing component may be a general purpose processor, such as a central processing unit (CPU) or other processor that can call the program code.
  • these modules can be integrated and implemented in the form of a system-on-a-chip (SOC).
  • SOC system-on-a-chip
  • some embodiments of the present disclosure further provide a network device, including a processor, a memory, and a computer program stored on the memory and operable on the processor, the processor executing the computer
  • the steps in the random access method as described above are implemented at the time of the program.
  • Some embodiments of the present disclosure also provide a computer readable storage medium having stored thereon a computer program that, when executed by a processor, implements the steps of the random access method as described above.
  • FIG. 8 is a block diagram showing the structure of a network device of some embodiments of the present disclosure.
  • the network device 800 includes an antenna 81, a radio frequency device 82, and a baseband device 83.
  • the antenna 81 is connected to the radio frequency device 82.
  • the radio frequency device 82 receives information through the antenna 81 and transmits the received information to the baseband device 83 for processing.
  • the baseband device 83 processes the information to be transmitted and transmits it to the radio frequency device 82.
  • the radio frequency device 82 processes the received information and transmits it via the antenna 81.
  • the above-described band processing device may be located in the baseband device 83, and the method performed by the network device in the above embodiment may be implemented in the baseband device 83, which includes the processor 84 and the memory 85.
  • the baseband device 83 may include, for example, at least one baseband board on which a plurality of chips are disposed, as shown in FIG. 8, one of which is, for example, a processor 84, connected to the memory 85 to call a program in the memory 85 to execute The network device operation shown in the above method embodiment.
  • the baseband device 83 can also include a network interface 86 for interacting with the radio frequency device 82, such as a common public radio interface (CPRI).
  • CPRI common public radio interface
  • the processor here may be a processor or a collective name of multiple processing elements.
  • the processor may be a CPU, an ASIC, or one or more configured to implement the method performed by the above network device.
  • An integrated circuit such as one or more microprocessor DSPs, or one or more field programmable gate array FPGAs.
  • the storage element can be a memory or a collective name for a plurality of storage elements.
  • Memory 85 can be either volatile memory or non-volatile memory, or can include both volatile and non-volatile memory.
  • the non-volatile memory may be a Read-Only Memory (ROM), a Programmable ROM (Programmable ROM), or an Erasable PROM (EPROM). , electrically erasable programmable read only memory (EEPROM) or flash memory.
  • the volatile memory may be a Random Access Memory (RAM), which is used as an external cache.
  • RAM Random Access Memory
  • many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (Synchronous).
  • DRAM double data rate synchronous dynamic random access memory
  • DDRSDRAM double data rate synchronous dynamic random access memory
  • ESDRAM enhanced synchronous dynamic random access memory
  • SLDRAM Synchlink DRAM
  • DRRAM Direct Memory Bus
  • the network device of some embodiments of the present disclosure further includes a computer program stored on the memory 85 and operable on the processor 84, and the processor 84 executes the computer program in the memory 85 when the processor 84 executes the method of FIG. Shows the method performed by each module.
  • the processor 84 when the computer program is invoked by the processor 84, the processor 84 is configured to: configure a random access RACH resource for the terminal to be randomly selected; and send the candidate RACH resource to the terminal, where the terminal selects the candidate RACH resource for the terminal.
  • the public RACH resource includes: a system message delivered by the network device or a preamble code for the random access, a time domain resource, and/or a frequency domain resource carried in the RRC message.
  • the dedicated RACH resource includes at least one of the following: a preamble sequence reserved by the network device for random access, a time domain resource, and/or a frequency domain resource; and a dedicated synchronization signal block reserved for the random access by the network device.
  • the RACH resource reserved by the network device for the random access from the public RACH resource is: a preamble code, a time domain resource, and/or a frequency domain resource reserved by the network device from the public RACH resource for the random access.
  • the processor 84 can be configured to: configure a candidate RACH resource for random access and a synchronization signal block SS block and/or channel state information reference signal CSI associated with the candidate RACH resource for the terminal. -RS.
  • the additional RACH resources include at least one of the following: a RACH resource reserved by the network device for random access; and other RACH resources except the public RACH resource and the dedicated RACH resource; and, with other synchronization signal blocks SS block and/or The channel state information reference signal CSI-RS associated RACH resource; wherein the other SS block is an SS block other than the SS block associated with the public RACH resource and the dedicated RACH resource; the other CSI-RS is a shared RACH resource A CSI-RS other than the CSI-RS associated with the dedicated RACH resource.
  • the processor 84 can be configured to: configure a candidate RACH resource for random access of the handover function for the terminal.
  • the processor 84 may be configured to: send a handover command carrying the candidate RACH resource of the random access for the handover function to the terminal; or send the terminal with a random carrying function for the handover function. High-level signaling of the candidate RACH resources that are accessed; or broadcast system messages carrying candidate RACH resources for random access of the handover function.
  • the handover command also carries at least part of the minimum system message.
  • the processor 84 can be configured to: send, by the high layer signaling, a mobile control message carrying the candidate RACH resources of the random access for the handover function to the terminal.
  • the network device may be a Global System of Mobile communication (GSM) or a Code Division Multiple Access (CDMA) base station (Base Transceiver Station, BTS for short) or a wideband code.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • BTS Base Transceiver Station
  • WCDMA Wideband Code Division Multiple Access
  • eNB or eNodeB evolved Node B
  • eNodeB evolved Node B
  • a base station or the like in a 5G network is not limited herein.
  • the network device configures one or more candidate RACH resources for the terminal and sends the same to the terminal, and the terminal determines a target RACH for random access from the candidate RACH resources to ensure random for different purposes.
  • the access process is implemented normally. In particular, when used to switch scenarios, the terminal can be quickly accessed to the target cell, thereby achieving fast switching.
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • 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, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in various embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, a portion of the technical solution of the present disclosure that contributes in essence or to the related art or a part of the technical solution may be embodied in the form of a software product stored in a storage medium, including several The instructions are for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present disclosure.
  • the foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.
  • the objects of the present disclosure can also be realized by running a program or a group of programs on any computing device.
  • the computing device can be a well-known general purpose device.
  • the objects of the present disclosure may also be realized by merely providing a program product including program code for implementing the method or apparatus. That is to say, such a program product also constitutes the present disclosure, and a storage medium storing such a program product also constitutes the present disclosure.
  • the storage medium may be any known storage medium or any storage medium developed in the future.
  • various components or steps may be decomposed and/or recombined.

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Abstract

本公开公开了一种随机接入方法、终端、网络设备及计算机可读存储介质。该方法包括：获取候选随机接入RACH资源；从候选RACH资源中选择目标RACH资源；通过目标RACH资源发起随机接入流程。其中，候选RACH资源包括公用RACH资源、专用RACH资源和额外RACH资源中的至少一种。

Description

随机接入方法、终端、网络设备及计算机可读存储介质
相关申请的交叉引用
本申请主张在2017年8月10日在中国提交的中国专利申请号No.201710682147.7的优先权，其全部内容通过引用包含于此。
技术领域
本公开涉及通信技术领域，尤其涉及一种随机接入方法、终端、网络设备及计算机可读存储介质。
背景技术
在第五代(5 th Generation，以下简称：5G)移动通信系统中，或称为新空口(New Radio，以下简称：NR)系统，下行链路传输速率达到20Gbps，上行链路传输速率达到10Gbps。高频通信可提供更宽的系统带宽，天线尺寸也可以更小，更加有利于大规模天线在基站和终端(User Equipment，以下简称：UE)中部署。但是高频通信存在路径损耗较大、容易受干扰、链路较脆弱的缺点，而大规模天线技术可提供较大天线增益，因此，高频通信与大规模天线的结合是5G移动通信系统的必然趋势。在大规模天线系统中，为了获得更大的发送信号覆盖距离，可以采用集中波束的方式进行发送，但是由于波束覆盖范围较窄，为了获得更广的覆盖范围和覆盖距离，可在不同时段在不同方向的波束上进行信号发送。
进一步地，在5G移动通信系统中，基站会通过波束扫描方式发送下行信号，终端在发起上行随机接入过程时，需要基站为终端配置每个下行波束对应的上行随机接入资源，即物理随机接入信道(Physical Random Access Channel，以下简称：PRACH)资源，其中，下行波束对应的参考信号包括信道状态信息参考信号(Channel State Information Reference Signal，以下简称：CSI-RS)和/或同步信号块(Synchronization Signal block，以下简称：SS block)。终端会在选定下行接收波束后，在该下行接收波束对应的上行PRACH资源进行随机接入过程。因此，在5G移动通信系统中，引入了新的随机接入资 源：波束，在配置随机接入资源时需要同时指定波束资源或其对应的SS block。当终端进行随机接入时，若终端同时有专用随机接入(dedicated Random Access Channel，以下简称：dedicated RACH)资源和公共随机接入(Common Random Access Channel，以下简称：Common RACH)资源时，终端无法进行选择，且专用所随机接入资源和公共随机接入资源可能关联不同波束对应的不同CSI-RS和/或SS block，这时无法确定随机接入实际所采用的随机接入资源。
发明内容
本公开提供了随机接入方法、终端、网络设备及计算机可读存储介质，以解决当同时存在多种类型的随机接入资源时，无法确定随机接入实际所采用的随机接入资源的问题。
第一方面，本公开的一些实施例提供了一种随机接入方法，应用于终端，包括：获取候选随机接入RACH资源；从候选RACH资源中选择目标RACH资源；其中，候选RACH资源包括公用RACH资源、专用RACH资源和额外RACH资源中的至少一种；通过目标RACH资源发起随机接入流程。
第二方面，本公开的一些实施例还提供了一种终端，包括：第一获取模块，用于获取候选随机接入RACH资源；选择模块，用于从候选RACH资源中选择目标RACH资源；其中，候选RACH资源包括公用RACH资源、专用RACH资源和额外RACH资源中的至少一种；处理模块，用于通过目标RACH资源发起随机接入流程。
第三方面，本公开的一些实施例提供了一种终端，终端包括处理器、存储器以及存储于存储器上并可在所述处理器上运行的计算机程序，计算机程序被所述处理器执行时所述处理器实现如上所述的随机接入方法的步骤。
第四方面，本公开的一些实施例提供了一种计算机可读存储介质，计算机可读存储介质上存储有计算机程序，计算机程序被处理器执行时所述处理器实现如上所述的随机接入方法的步骤。
第五方面，本公开的一些实施例提供了一种随机接入方法，应用于网络设备，包括：为终端配置随机接入的候选随机接入RACH资源；将候选RACH 资源发送至终端，供终端从候选RACH资源中选择用于发起随机接入流程的目标RACH资源；其中，候选RACH资源包括公用RACH资源、专用RACH资源和额外RACH资源中的至少一种。
第六方面，本公开的一些实施例还提供了一种网络设备，包括：配置模块，用于为终端配置随机接入的候选随机接入RACH资源；发送模块，用于将候选RACH资源发送至终端，供终端从候选RACH资源中选择用于发起随机接入流程的目标RACH资源；其中，候选RACH资源包括公用RACH资源、专用RACH资源和额外RACH资源中的至少一种。
第七方面，本公开的一些实施例提供了一种网络设备，网络设备包括处理器、存储器以及存储于存储器上并可在所述处理器上运行的计算机程序，所述处理器执行计算机程序时实现如上所述的随机接入方法的步骤。
第八方面，本公开的一些实施例提供了一种计算机可读存储介质，计算机可读存储介质上存储有计算机程序，计算机程序被处理器执行时所述处理器实现如上所述的随机接入方法的步骤。
附图说明
为了更清楚地说明本公开的一些实施例的技术方案，下面将对本公开的一些实施例的描述中所需要使用的附图作简单地介绍。显而易见地，下面描述中的附图仅仅是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1表示本公开的一些实施例的终端侧的随机接入方法的流程示意图；
图2表示基于竞争的随机接入流程的示意图；
图3表示基于非竞争的随机接入流程的示意图；
图4表示本公开的一些实施例的终端的模块结构示意图；
图5表示本公开的一些实施例的终端的结构框图；
图6表示本公开的一些实施例的网络设备侧的随机接入方法的流程示意图；
图7表示本公开的一些实施例的网络设备的模块结构示意图；以及
图8表示本公开的一些实施例的网络设备的结构框图。
具体实施方式
下面将参照附图更详细地描述本公开的示例性实施例。虽然附图中显示了本公开的示例性实施例，然而应当理解，可以以各种形式实现本公开而不应被这里阐述的实施例所限制。相反，提供这些实施例是为了能够更透彻地理解本公开，并且能够将本公开的范围完整的传达给本领域的技术人员。
本申请的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的本申请的实施例例如能够以除了在这里图示或描述的那些以外的顺序实施。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
本公开提供了的随机接入方法、终端、网络设备及计算机可读存储介质，可以以解决当同时存在多种类型的随机接入资源时，无法确定随机接入实际所采用的随机接入资源的问题。
图1表示本公开的一些实施例的终端侧的随机接入方法的流程示意图。图2表示基于竞争的随机接入流程的示意图。图3表示基于非竞争的随机接入流程的示意图。
本公开的一些实施例的接入控制方法，应用于终端侧，如图1所示，具体包括以下步骤11-13。
步骤11：获取候选随机接入RACH资源。
其中，无论是相关的长期演进型(Long Term Evolution，以下简称：LTE)系统中，还是5G移动通信系统中，均需要通过随机接入过程实现多种目的，如终端初始的无线资源控制RRC连接建立、RRC重建、切换、下行数据到达但下行失步、上行数据到达但上行失步、终端由非激活态转换到激活态以及辅小区的上行同步获取等，因此网络设备基于不同随机接入的目的为终端配置不同的随机接入RACH资源。这里所说的获取随机接入的候选RACH资 源，尤其是指获取某种特定目的的随机接入流程的候选RACH资源。这里候选RACH资源包括公用(Common)RACH资源、专用(Dedicated)RACH资源和额外(Additional)RACH资源中的至少一种。
具体地，步骤11具体为：获取候选RACH资源以及与候选RACH资源相关联的同步信号块SS block和/或信道状态信息参考信号CSI-RS。也就是说，候选RACH资源与相应的下行SS block和/或CSI-RS具有映射关系，亦可以说是成对出现，网络设备为终端配置了候选RACH资源，必将配置或者有默认的SS block和/或CSI-RS的资源与之对应。
其中，公用RACH资源包括：网络设备下发的系统消息(如SIB2或最小系统消息等)或无线资源控制RRC消息中携带的、用于随机接入的前导序列preamble码、时域资源和/或频域资源。具体地，公用RACH资源可以是网络设备为多个终端配置的、用于某种特定目的的共享RACH资源，不同终端通过竞争方式使用该资源，公用RACH资源还可以是网络设备为一个终端配置的、不同目的的随机接入流程共享的RACH资源。公用RACH资源可以理解为终端进行随机接入的默认资源。
进一步地，专用RACH资源包括以下至少一项：网络设备为随机接入预留的前导序列preamble码、时域资源、和/或频域资源；这里尤其是指网络设备为某种特定目的的随机接入资源预留的RACH资源，例如为切换功能的随机接入流程预留的RACH资源。
与网络设备为随机接入预留的同步信号块SS block和/或信道状态信息参考信号CSI-RS相关联的RACH资源；这里尤其是指网络设备为某种特定目的的随机接入流程预留的专用SS block和/或CSI-RS相关联的RACH资源，例如为切换功能预留的专用SS block和/或CSI-RS相关联的RACH资源。
以及，网络设备从公用RACH资源中为随机接入预留的RACH资源。这里是说，网络设备从公用RACH资源中为随机接入预留的前导序列preamble码、时域资源和/或频域资源，即专用RACH资源可以是从公用RACH资源中选择预留的部分资源，即时域、频域、preamble码中至少一个是从公用RACH资源中选择的。值得指出的是，当同一RACH资源作为专用RACH资源时，所关联的SS block和/或CSI-RS与作为公用RACH资源时所关联的 SS block和/或CSI-RS可以不一样。
其中，以上所说的专用RACH资源即可用于非竞争的随机接入(non-contention based random access,content-free random access,以下简称：CFRA)流程，亦可应用于竞争的随机接入(contention based random access,以下简称：CBRA)流程。如果是为每个终端单独预留的RACH资源，则对应非竞争的随机接入流程；如果是预留的相同的RACH资源可以为多个终端使用，则对应竞争的随机接入流程。
进一步地，额外RACH资源包括以下至少一项：网络设备为随机接入预留的RACH资源；这里尤其指的是，网络设备为某种特定目的预留用于其他目的的随机接入的RACH资源，例如网络设备为切换功能的随机接入预留RRC重建功能的随机接入的RACH资源。
除公用RACH资源和专用RACH资源之外的其他RACH资源；即，在周期性的公用RACH资源以及专用RACH资源之外，开辟新的RACH位置(包括时域或频域)，开辟的新的RACH位置为额外RACH资源。
以及，与其他同步信号块SS block和/或信道状态信息参考信号CSI-RS相关联的RACH资源；其中，其他SS block为除与所述公用RACH资源和专用RACH资源相关联的SS block之外的SS block；其他CSI-RS为除与所述公用RACH资源和专用RACH资源相关联的CSI-RS之外的CSI-RS。也就是说，额外RACH资源还可以是：在与公用RACH资源和专用RACH资源相关联的SS block和/或CSI-RS对应位置之外的SS block和/或CSI-RS相关联的RACH资源。
同样地，以上所说的额外RACH资源即可用于非竞争的随机接入流程，亦可应用于竞争的随机接入流程。上述的公用RACH资源、专用RACH资源和额外RACH资源对应的SS block和CSI-RS还可以是其它的参考信号。
步骤12：从候选RACH资源中选择目标RACH资源。
终端在获得上述候选RACH资源后，进行随机接入时需要选择一个或多个候选RACH资源作为随机接入所采用的资源。其中，值得指出的是上述候选RACH资源既可包括竞争RACH资源又可包括非竞争RACH资源。
具体地，步骤12可通过以下方式一至方式三实现：
方式一、根据与候选RACH资源相关联的SS block和/或CSI-RS，从候选RACH资源中选择目标RACH资源。
具体地，将与信号质量高于第一门限值的SS block和/或CSI-RS相关联的候选RACH资源，确定为目标RACH资源。由于非竞争RACH资源较竞争RACH资源具有更高的优势，可将与信号质量高于第一门限值的SS block和/或CSI-RS相关联的候选RACH资源中的非竞争RACH资源，确定为目标RACH资源。
方式二、根据与候选RACH资源对应的波束的波束接收质量，从候选RACH资源中选择目标RACH资源。
具体地，将波束接收质量最好的前N个波束对应的候选RACH资源，确定为目标RACH资源；N为正整数。同样由于非竞争RACH资源较竞争RACH资源具有更高的优势，可将波束接收质量最好的前N个波束对应的候选RACH资源中的非竞争RACH资源，确定为目标RACH资源。
方式三、根据预设优先级，从候选RACH资源中选择目标RACH资源。
这里所说的优先级指的是候选RACH资源中竞争RACH资源和非竞争RACH资源的优先级，由于非竞争RACH资源较竞争RACH资源具有更高的优势，因此可将候选RACH资源中的一个或多个非竞争RACH资源确定为目标RACH资源。
步骤13：通过目标RACH资源发起随机接入流程。
其中，目前的随机接入过程分为竞争的随机接入和非竞争的随机接入，步骤13中所说的随机接入流程既可以是基于竞争的随机接入流程，亦可以是基于非竞争的随机接入流程。这里尤其指的是，无论是基于竞争的随机接入流程还是基于非竞争的随机接入流程，均可通过目标RACH资源，向网络设备发送随机接入的前导序列preamble码。如图2所示，竞争的随机接入过程为分4步，终端通过消息一(Message 1，以下简称：MSG1)向网络设备发起随机接入请求，该随机接入请求承载于随机接入preamble码中。网络设备接收到该随机接入请求后，通过消息二(Message 2，以下简称：MSG2)向终端反馈随机接入响应(Random Access Response，以下简称：RAR)。由于竞争的随机接入存在在同样的PRACH资源发送同样的preamble码的问题， 因此终端在接收完消息二后还需要根据上行授权(UL grant)向网络设备发送消息三(Message 3，以下简称：MSG3)，并且终端会在消息三中携带终端的标识信息，在消息三发送时的同时启动竞争解决定时器。在竞争解决定时器没超时前如果收到网络设备发送的消息四(Message 4，以下简称：MSG4)，则说明终端竞争解决成功。其中，在消息四中网络设备会携带终端标识信息，终端根据接收到的终端标识就可以判断是不是自己竞争成功。
而非竞争随机接入流程，如图3所示，终端通过MSG1向网络设备发起随机接入请求，该随机接入请求承载于随机接入preamble码中。网络设备接收到该随机接入请求后，通过MSG2向终端反馈RAR，终端接收到RAR后确定随机接入成功。
进一步地，终端能力不同所能够支持同时监测下行波束的能力也不同，当终端具备同时监测P个下行波束的能力时，通过目标RACH资源，向网络设备发送随机接入的前导序列preamble码的步骤包括：在随机接入响应RAR窗口过期前，在目标RACH资源上向网络设备发送X个preamble码；在所述RAR窗口过期后，向网络设备发送其他preamble码。其中，X、P均为正整数，且X小于或等于P，其他preamble码为除P个preamble码之外的preamble码。也就是说，如果终端有能力同时监测P个下行波束，则终端可以在目标RACH资源上发送一个preamble码后，可以在RAR窗口过期前再发送P-1个preamble码，多于P个的preamble码可以在RAR窗口过期后再发送，但是同时需要监听的RAR不多于P个。
进一步地，无论是基于竞争的随机接入过程还是基于非竞争的随机接入过程，终端在通过目标RACH资源，向网络设备发送随机接入的前导序列preamble码的步骤之后还包括：在与发送preamble码的RACH资源相关联的SS block和/或CSI-RS对应的下行波束上监测随机接入响应RAR。即在与目标RACH资源相关联的SS block和/或CSI-RS资源上监听RAR(或称为消息二)。
当终端具备同时监测Q个下行波束的能力时，在与目标RACH资源相关联的SS block和/或CSI-RS对应的下行波束上监测随机接入响应RAR的步骤包括可通过以下方式实现：在与发送Y个preamble码的目标RACH资源相 关联的SS block和/或CSI-RS的下行波束上，监测Y个RAR；其中，Q、Y为正整数，Y小于或等于Q。或者，在与发送Y’个preamble码的目标RACH资源相关联的SS block和/或CSI-RS的下行波束上，自主选择监测Q个RAR；其中，Q大于M。
如果终端在同一时间只能监听一个下行波束，那么终端在发送preamble码的RACH资源相关联的SS block和/或CSI-RS的下行波束上去监听对应的RAR。而对于发送多个preamble码的场景，终端在发送preamble码的PACH资源相关联的SS block和/或CSI-RS的下行波束中选择一个去监听RAR。
同理，如果终端在同一时间内只能检测Q个下行波束，对于发送的preamble码数目不多于Q的场景，终端在发送preamble码的RACH资源相关联的SS block和/或CSI-RS的下行波束上去监听对应的RAR。而对于发送的preamble码数目多余Q的场景，终端在发送preamble码的RACH资源相关联的SS block和/或CSI-RS的下行波束中选择Q个去监听对应的RAR。
进一步地，步骤12具体还包括：将下行获取到的SS block和/或CSI-RS相关联的候选RACH资源，确定为目标RACH资源。对应地，步骤13具体还包括：通过与下行获取到的SS block和/或CSI-RS相关联的RACH资源，向网络设备发送随机接入的前导序列preamble码。即将与接收到的SS block和/或CSI-RS相关联的RACH资源确定为目标RACH资源，并通过相应资源发送preamble码。具体地，当终端接收到L个SS block和/或CSI-RS时，在随机接入响应RAR窗口过期前，通过与下行获取到的SS block和/或CSI-RS相关联的RACH资源，向网络设备发送L’个preamble码；其中，L、L’为正整数，L’小于L。也就是说，终端可以在目标RACH资源上发送一个preamble码后，可以在RAR窗口过期前再发送L-1个preamble码，多于L个的preamble码可以在RAR窗口过期后再发送，但是同时需要监听的RAR不多于L个。
以上介绍了本公开的一些实施例的随机接入方法的通用场景下的实施例，下面本公开的一些实施例将结合具体的切换场景对其做进一步介绍。
在相关的长期演进型(Long Term Evolution，以下简称：LTE)系统中，为达到切换时快速接入目标小区，需要在切换命令中携带接入目标小区必要的配置，从而缩短切换中断延时。具体地，由源基站向目标基站发起切换请 求，目标基站先做接入控制，在允许后向源基站发起切换确认消息，并将终端接入所需要的必要配置通过切换确认消息透传至源基站。源基站向终端发起切换命令，并在切换命令中携带目标基站透传过来的接入所需要的必要配置信息。终端在接收到切换命令后，进行小区切换，并在切换完成后向目标基站发送切换完成消息。
本公开的一些实施例中步骤11具体为：获取用于切换功能的随机接入的候选RACH资源。进一步地，获取用于切换功能的随机接入的候选RACH资源的步骤可通过以下方式一或方式二或方式三实现：
方式一：接收网络设备发送的切换命令(Handover Command)，从切换命令中获取用于切换功能的随机接入的候选RACH资源。在切换过程中，终端需要获得公用RACH资源、专用RACH资源和额外RACH资源中的至少一种，或者与他们相关联的SS block或CSI-RS，上述候选RACH资源可从接收到的切换命令中获得。具体地，发送流程可参照以下方式实现：目标基站产生RRC消息后，通过一个透传的容器(Transparent Container)在切换命令中发送到源基站，源基站再发送给终端。进一步地，接收网络设备发送的携带有至少部分(全部或部分)最小系统消息(Minimum SI)的切换命令。也就是说最小系统消息中的部分或全部信息包括在切换命令中，通过RRC信令等方式发送至终端；或者，
方式二：接收网络设备发送的高层信令，此处的高层信令即是指RRC消息，从高层信令中获取用于切换功能的随机接入的候选RACH资源；具体地，目标基站将切换命令发送至源基站，在源基站将切换命令包括在RRC信令中发送给终端。具体地，终端接收网络设备发送的携带有移动控制消息的高层信令；从高层信令的移动控制消息中，获取用于切换功能的随机接入的候选RACH资源。也就是说，网络设备将候选RACH资源承载于高层信令的移动控制消息中发送；或者，
方式三：获取邻区系统消息，从邻区系统消息中获取用于切换功能的随机接入的候选RACH资源。这里获取邻区系统消息的方式包括：直接接收邻区系统消息的方式，或者，读取终端存储的邻区系统消息的方式。
在具体的切换场景下的随机接入流程中，步骤12具体可通过以下方式实 现：获取候选RACH资源中在接收到切换命令后的满足预设条件的前M个RACH资源；将前M个RACH资源确定为目标RACH资源。其中，M为大于或等于1的整数。这里是说，在有多个候选RACH资源可用时，终端选择离接收到切换命令后最近的一个或多个RACH资源作为目标RACH资源。
具体地，获取候选RACH资源中在接收到切换命令后的满足预设条件的前M个RACH资源的步骤可参照以下方式实现：
获取候选RACH资源中在接收到切换命令后的前M个候选RACH资源。即在接收到切换命令后继续监测最先获取到的M个候选RACH资源，并将该M个候选RACH资源作为目标RACH资源；
或者，获取候选RACH资源中在接收到切换命令后的前M个非竞争RACH资源。由于非竞争RACH资源较竞争RACH资源具有更高的优势，可选择离接收到切换命令后最近的一个或多个候选RACH资源中的非竞争RACH资源作为目标RACH资源；
或者，获取候选RACH资源中在接收到切换命令后、前M个与信号质量高于预设门限值的SS block和/或CSI-RS相关联的RACH资源。即进一步考虑下行SS block和/或CSI-RS的信号质量，终端在接收到切换命令后，继续监测最先获取到的、下行SS block和/或CSI-RS的信号质量超过预设门限值的前M个候选RACH资源，并将前M个候选RACH资源作为目标RACH资源；
或者，获取候选RACH资源中在接收到切换命令后、前M个与信号质量高于预设门限值的SS block和/或CSI-RS相关联的非竞争RACH资源，确定为目标RACH资源。由于非竞争RACH资源较竞争RACH资源具有更高的优势，可选择离接收到切换命令后最近的前M个与信号质量高于预设门限值的SS block和/或CSI-RS相关联的非竞争RACH资源作为目标RACH资源；
或者，进一步地，如果考虑波束的波束接收质量，可进一步地，获取候选RACH资源中在接收到切换命令后、波束接收质量最好的前M个RACH资源。也就是说，终端在波束接收质量最好的候选RACH资源中，选择离接收到切换命令后最近的前N个候选RACH资源作为目标RACH资源；
或者，获取候选RACH资源中在接收到切换命令后、波束接收质量最好 的前M个非竞争RACH资源。由于非竞争RACH资源较竞争RACH资源具有更高的优势，终端可在波束接收质量最好的候选RACH资源中，选择离接收到切换命令后最近的前M个非竞争RACH资源作为目标RACH资源。
本公开的一些实施例的随机接入方法中，终端通过获取网络设备配置的候选RACH资源，再从候选RACH资源中确定目标RACH资源，通过目标RACH资源发起随机接入流程，以保证当同时存在多种类型的随机接入资源时，通过选择合适的随机接入资源快速可靠地接入网络，以实现随机接入期望达到的特定目的，如RRC连接、RRC重建和切换等。特别地，当用于切换场景时，可以快速接入目标小区，从而达到快速切换的目的。
以上实施例分别详细介绍了不同场景下的随机接入方法，下面本实施例将结合附图对其对应的终端做进一步介绍。
图4表示本公开的一些实施例的终端的模块结构示意图。如图4所示，本公开的一些实施例的终端400，能实现上述实施例中获取候选随机接入RACH资源；从候选RACH资源中选择目标RACH资源；通过目标RACH资源发起随机接入流程方法的细节，并达到相同的效果，该终端400具体包括：第一获取模块410，用于获取候选随机接入RACH资源；选择模块420，用于从候选RACH资源中选择目标RACH资源；其中，候选RACH资源包括公用RACH资源、专用RACH资源和额外RACH资源中的至少一种；以及处理模块430，用于通过目标RACH资源发起随机接入流程。
其中，公用RACH资源包括：网络设备下发的系统消息或无线资源控制RRC消息中携带的、用于随机接入的前导序列preamble码、时域资源和/或频域资源。
其中，专用RACH资源包括以下至少一项：网络设备为随机接入预留的前导序列preamble码、时域资源、和/或频域资源；与网络设备为随机接入预留的专用同步信号块SS block和/或信道状态信息参考信号CSI-RS相关联的RACH资源；以及，网络设备从公用RACH资源中为随机接入预留的RACH资源。
其中，网络设备从公用RACH资源中为随机接入预留的RACH资源为：网络设备从公用RACH资源中为随机接入预留的前导序列preamble码、时域 资源和/或频域资源。
其中，第一获取模块410包括：第一获取子模块，用于获取候选RACH资源以及与候选RACH资源相关联的同步信号块SS block和/或信道状态信息参考信号CSI-RS。
其中，额外RACH资源包括以下至少一项：网络设备为随机接入预留的RACH资源；除公用RACH资源和专用RACH资源之外的其他RACH资源；以及，与其他同步信号块SS block和/或信道状态信息参考信号CSI-RS相关联的RACH资源；其中，其他SS block为除与公用RACH资源和专用RACH资源相关联的SS block之外的SS block；其他CSI-RS为除与公用RACH资源和专用RACH资源相关联的CSI-RS之外的CSI-RS。
其中，第一获取模块410包括：第二获取子模块，用于获取用于切换功能的随机接入的候选RACH资源。
其中，第二获取子模块包括：第一获取单元，用于接收网络设备发送的切换命令，从切换命令中获取用于切换功能的随机接入的候选RACH资源；或者，第二获取单元，用于接收网络设备发送的高层信令，从高层信令中获取用于切换功能的随机接入的候选RACH资源；或者，第三获取单元，用于获取邻区系统消息，从邻区系统消息中获取用于切换功能的随机接入的候选RACH资源。
其中，第二获取单元包括：第一接收子单元，用于接收网络设备发送的携带有移动控制消息的高层信令；第一获取子单元，用于从高层信令的移动控制消息中，获取用于切换功能的随机接入的候选RACH资源。
其中，第一获取模块410包括：第二接收子单元，用于接收网络设备发送的携带有至少部分最小系统消息的切换命令。
其中，选择模块包括：第三获取子模块，用于获取候选RACH资源中在接收到切换命令后的前M个RACH资源；其中，M为大于或等于1的整数；第一确定子模块，用于根据前M个RACH资源，确定目标RACH资源。
其中，第三获取子模块包括：第四获取单元，用于获取候选RACH资源中在接收到切换命令后的前M个候选RACH资源；或者，第五获取单元，用于获取候选RACH资源中在接收到切换命令后的前M个非竞争RACH资源； 或者，第六获取单元，用于获取候选RACH资源中在接收到切换命令后、前M个与信号质量高于预设门限值的SS block和/或CSI-RS相关联的RACH资源；或者，第七获取单元，用于获取候选RACH资源中在接收到切换命令后、前M个与信号质量高于预设门限值的SS block和/或CSI-RS相关联的非竞争RACH资源，确定为目标RACH资源；或者，第八获取单元，用于获取候选RACH资源中在接收到切换命令后、波束接收质量最好的前M个RACH资源；或者，第九获取单元，用于获取候选RACH资源中在接收到切换命令后、波束接收质量最好的前M个非竞争RACH资源。
其中，第三获取单元包括：第三接收子单元，用于接收邻区系统消息，或者，读取子单元，用于读取终端存储的邻区系统消息。
其中，选择模块包括：第一选择子模块，用于根据与候选RACH资源相关联的SS block和/或CSI-RS，从候选RACH资源中选择目标RACH资源；或者，第二选择子模块，用于根据与候选RACH资源对应的下行波束的波束接收质量，从候选RACH资源中选择目标RACH资源；或者，第三选择子模块，用于根据预设优先级，从候选RACH资源中选择目标RACH资源。
其中，第一选择子模块包括：第一确定单元，用于将与信号质量高于第一门限值的SS block和/或CSI-RS相关联的候选RACH资源，确定为目标RACH资源。
其中，第一确定单元包括：第一确定子单元，用于将与信号质量高于第一门限值的SS block和/或CSI-RS相关联的候选RACH资源中的非竞争RACH资源，确定为目标RACH资源。
其中，第二选择子模块包括：第二确定单元，用于将波束接收质量最好的前N个波束对应的候选RACH资源，确定为目标RACH资源；N为正整数。
其中，第二确定单元包括：第二确定子单元，用于将波束接收质量最好的前N个波束对应的候选RACH资源中的非竞争RACH资源，确定为目标RACH资源。
其中，处理模块包括：第一发送子模块，用于通过目标RACH资源，向网络设备发送随机接入的前导序列preamble码。
其中，第一发送子模块包括：第一发送单元，用于当终端具备同时监测P个下行波束的能力时，在随机接入响应RAR窗口过期前，在目标RACH资源上向网络设备发送X个preamble码；其中，X、P均为正整数，且X小于或等于P；第二发送单元，用于在RAR窗口过期后，向网络设备发送其他preamble码；其中，其他preamble码为除P个preamble码之外的preamble码。
其中，处理模块还包括：监测子模块，用于在与发送preamble码的RACH资源相关联的SS block和/或CSI-RS对应的下行波束上监测随机接入响应RAR。
其中，监测子模块包括：第一监测单元，用于当终端具备同时监测Q个下行波束的能力时，在与发送Y个preamble码的目标RACH资源相关联的SS block和/或CSI-RS的下行波束上，监测Y个RAR；其中，Q、Y为正整数，Y小于或等于Q；第二监测单元，用于在与发送Y’个preamble码的目标RACH资源相关联的SS block和/或CSI-RS的下行波束上，自主选择监测Q个RAR；其中，Q大于M。
其中，选择模块还包括：第四选择子模块，用于将下行获取到的SS block和/或CSI-RS相关联的候选RACH资源，确定为目标RACH资源。
其中，处理模块包括：第二发送子模块，用于通过与下行获取到的SSblock和/或CSI-RS相关联的候选RACH资源，向网络设备发送随机接入的前导序列preamble码。
其中，第二发送子模块包括：第三发送单元，用于当终端接收到L个SSblock和/或CSI-RS时，在随机接入响应RAR窗口过期前，通过与下行获取到的SS block和/或CSI-RS相关联的RACH资源，向网络设备发送L’个preamble码；其中，L、L’为正整数，L’小于或等于L。
值得指出的是，本公开的一些实施例的终端通过获取网络设备配置的候选RACH资源，再从候选RACH资源中确定目标RACH资源，通过目标RACH资源发起随机接入流程，以保证当同时存在多种类型的随机接入资源时，通过选择合适的随机接入资源快速可靠地接入网络，以实现随机接入期望达到的特定目的，如RRC连接、RRC重建和切换等。特别地，当用于切换场景 时，可以快速接入目标小区，从而达到快速切换的目的。
为了更好地实现上述目的，本公开的一些实施例还提供了一种终端，包括处理器、存储器以及存储于存储器上并可在处理器上运行的计算机程序，处理器执行计算机程序时该处理器实现如上所述的随机接入方法中的步骤。
本公开的一些实施例还提供了一种计算机可读存储介质，计算机可读存储介质上存储有计算机程序，计算机程序被处理器执行时该处理器实现如上所述的随机接入方法的步骤。
本公开中提到的计算机可读存储介质可以是易失性的或者是非易失性的，或者是瞬态的或者非瞬态的。
具体地，图5是本公开的终端500的结构框图，如图5所示的终端包括：至少一个处理器501、存储器502、用户接口503和网络接口504。终端500中的各个组件通过总线系统505耦合在一起。可理解，总线系统505用于实现这些组件之间的连接通信。总线系统505除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见，在图5中将各种总线都标为总线系统505。
其中，用户接口503可以包括显示器或者点击设备(例如触感板或者触摸屏等。
可以理解，本公开的一些实施例中的存储器502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，DDRSDRAM)、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，DRRAM)。本文描述的系统和方法的存储器502旨在包括但不限于这些和任意其它适合类型的存储器。
在一些实施方式中，存储器502存储了如下的元素，可执行模块或者数据结构，或者他们的子集，或者他们的扩展集：操作系统5021和应用程序5022。
其中，操作系统5021，包含各种系统程序，例如框架层、核心库层、驱动层等，用于实现各种基础业务以及处理基于硬件的任务。应用程序5022，包含各种应用程序，例如媒体播放器(Media Player)、浏览器(Browser)等，用于实现各种应用业务。实现本公开的一些实施例方法的程序可以包含在应用程序5022中。
在本公开的实施例中，终端500还包括：存储在存储器502上并可在处理器501上运行的计算机程序，具体地，可以是应用程序5022中的计算机程序，计算机程序被处理器501执行时处理器501实现如下步骤：获取候选随机接入RACH资源；从所述候选RACH资源中选择目标RACH资源；其中，所述候选RACH资源包括公用RACH资源、专用RACH资源和额外RACH资源中的至少一种；通过所述目标RACH资源发起随机接入流程。
上述本公开的一些实施例揭示的方法可以应用于处理器501中，或者由处理器501实现。处理器501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，上述方法的各步骤可以通过处理器501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501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)或者其它可编程逻辑器件、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公开的一些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。结合本公开的一些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502，处理器501读取存储器502中的信息，结合其硬件完成上述方法的步骤。
可以理解的是，本文描述的这些实施例可以用硬件、软件、固件、中间件、微码或其组合来实现。对于硬件实现，处理单元可以实现在一个或多个专用集成电路(Application Specific Integrated Circuits，ASIC)、数字信号处理器(Digital Signal Processor，DSP)、数字信号处理设备(DSP Device，DSPD)、可编程逻辑设备(Programmable Logic Device，PLD)、现场可编程门阵列(Field-Programmable Gate Array，FPGA)、通用处理器、控制器、微控制器、微处理器、用于执行本申请所述功能的其它电子单元或其组合中。
对于软件实现，可通过执行本文所述功能的模块(例如过程、函数等)来实现本文所述的技术。软件代码可存储在存储器中并通过处理器执行。存储器可以在处理器中或在处理器外部实现。
其中，上述公用RACH资源包括：网络设备下发的系统消息或无线资源控制RRC消息中携带的、用于随机接入的前导序列preamble码、时域资源和/或频域资源。
其中，专用RACH资源包括以下至少一项：网络设备为随机接入预留的前导序列preamble码、时域资源、和/或频域资源；与网络设备为随机接入预留的专用同步信号块SS block和/或信道状态信息参考信号CSI-RS相关联的RACH资源；以及，网络设备从公用RACH资源中为随机接入预留的RACH资源。
其中，网络设备从公用RACH资源中为随机接入预留的RACH资源为：网络设备从公用RACH资源中为随机接入预留的前导序列preamble码、时域资源和/或频域资源。
具体地，计算机程序被处理器501执行时处理器501还可实现如下步骤：获取候选RACH资源以及与候选RACH资源相关联的同步信号块SS block和/或信道状态信息参考信号CSI-RS。
其中，额外RACH资源包括以下至少一项：网络设备为随机接入预留的RACH资源；除公用RACH资源和专用RACH资源之外的其他RACH资源；以及，与其他同步信号块SS block和/或信道状态信息参考信号CSI-RS相关 联的RACH资源；其中，其他SS block为除与公用RACH资源和专用RACH资源相关联的SS block之外的SS block；其他CSI-RS为除与公用RACH资源和专用RACH资源相关联的CSI-RS之外的CSI-RS。
具体地，计算机程序被处理器501执行时还可实现如下步骤：获取用于切换功能的随机接入的候选RACH资源。
具体地，计算机程序被处理器501执行时处理器501还可实现如下步骤：接收网络设备发送的切换命令，从切换命令中获取用于切换功能的随机接入的候选RACH资源；或者，接收网络设备发送的高层信令，从高层信令中获取用于切换功能的随机接入的候选RACH资源；或者，获取邻区系统消息，从邻区系统消息中获取用于切换功能的随机接入的候选RACH资源。
具体地，计算机程序被处理器501执行时处理器501还可实现如下步骤：接收网络设备发送的携带有移动控制消息的高层信令；从高层信令的移动控制消息中，获取用于切换功能的随机接入的候选RACH资源。
具体地，计算机程序被处理器501执行时处理器501还可实现如下步骤：接收网络设备发送的携带有至少部分最小系统消息的切换命令。
具体地，计算机程序被处理器501执行时处理器501还可实现如下步骤：获取候选RACH资源中在接收到切换命令后的满足预设条件的前M个RACH资源；其中，M为大于或等于1的整数；将前M个RACH资源确定为目标RACH资源。
具体地，计算机程序被处理器501执行时处理器501还可实现如下步骤：获取候选RACH资源中在接收到切换命令后的前M个候选RACH资源；或者，获取候选RACH资源中在接收到切换命令后的前M个非竞争RACH资源；或者，获取候选RACH资源中在接收到切换命令后、前M个与信号质量高于预设门限值的SS block和/或CSI-RS相关联的RACH资源；或者，获取候选RACH资源中在接收到切换命令后、前M个与信号质量高于预设门限值的SS block和/或CSI-RS相关联的非竞争RACH资源，确定为目标RACH资源；或者，获取候选RACH资源中在接收到切换命令后、波束接收质量最好的前M个RACH资源；或者，获取候选RACH资源中在接收到切换命令后、波束接收质量最好的前M个非竞争RACH资源。
具体地，计算机程序被处理器501执行时处理器501还可实现如下步骤：接收邻区系统消息，或者，读取终端存储的邻区系统消息。
具体地，计算机程序被处理器501执行时处理器501还可实现如下步骤：根据与候选RACH资源相关联的SS block和/或CSI-RS，从候选RACH资源中选择目标RACH资源；或者，根据与候选RACH资源对应的下行波束的波束接收质量，从候选RACH资源中选择目标RACH资源；或者，根据预设优先级，从候选RACH资源中选择目标RACH资源。
具体地，计算机程序被处理器501执行时处理器501还可实现如下步骤：将与信号质量高于第一门限值的SS block和/或CSI-RS相关联的候选RACH资源，确定为目标RACH资源。
具体地，计算机程序被处理器501执行时处理器501还可实现如下步骤：将与信号质量高于第一门限值的SS block和/或CSI-RS相关联的候选RACH资源中的非竞争RACH资源，确定为目标RACH资源。
具体地，计算机程序被处理器501执行时处理器501还可实现如下步骤：将波束接收质量最好的前N个波束对应的候选RACH资源，确定为目标RACH资源；N为正整数。
具体地，计算机程序被处理器501执行时处理器501还可实现如下步骤：将波束接收质量最好的前N个波束对应的候选RACH资源中的非竞争RACH资源，确定为目标RACH资源。
具体地，计算机程序被处理器501执行时处理器501还可实现如下步骤：通过目标RACH资源，向网络设备发送随机接入的前导序列preamble码。
具体地，当终端具备同时监测P个下行波束的能力时，计算机程序被处理器501执行时还可实现如下步骤：在随机接入响应RAR窗口过期前，在目标RACH资源上向网络设备发送X个preamble码；其中，X、P均为正整数，且X小于或等于P；在RAR窗口过期后，向网络设备发送其他preamble码；其中，其他preamble码为除P个preamble码之外的preamble码。
具体地，计算机程序被处理器501执行时处理器501还可实现如下步骤：在与发送preamble码的RACH资源相关联的SS block和/或CSI-RS对应的下行波束上监测随机接入响应RAR。
具体地，当终端具备同时监测Q个下行波束的能力时，计算机程序被处理器501执行时还可实现如下步骤：在与发送Y个preamble码的目标RACH资源相关联的SS block和/或CSI-RS的下行波束上，监测Y个RAR；其中，Q、Y为正整数，Y小于或等于Q；在与发送Y’个preamble码的目标RACH资源相关联的SS block和/或CSI-RS的下行波束上，自主选择监测Q个RAR；其中，Q大于M。
具体地，计算机程序被处理器501执行时处理器501还可实现如下步骤：将下行获取到的SS block和/或CSI-RS相关联的候选RACH资源，确定为目标RACH资源。
具体地，计算机程序被处理器501执行时处理器501还可实现如下步骤：通过与下行获取到的SS block和/或CSI-RS相关联的候选RACH资源，向网络设备发送随机接入的前导序列preamble码。
具体地，当终端接收到L个SS block和/或CSI-RS时，计算机程序被处理器501执行时还可实现如下步骤：在随机接入响应RAR窗口过期前，通过与下行获取到的SS block和/或CSI-RS相关联的RACH资源，向网络设备发送L’个preamble码；其中，L、L’为正整数，L’小于或等于L。
其中，终端可以是无线终端也可以是有线终端，无线终端可以是指向用户提供语音和/或其他业务数据连通性的设备，具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备。无线终端可以经无线接入网(Radio Access Network，简称RAN)与一个或多个核心网进行通信，无线终端可以是移动终端，如移动电话(或称为“蜂窝”电话)和具有移动终端的计算机，例如，可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语言和/或数据。例如，个人通信业务(Personal Communication Service，简称PCS)电话、无绳电话、会话发起协议(Session Initiation Protocol，简称SIP)话机、无线本地环路(Wireless Local Loop，简称WLL)站、个人数字助理(Personal Digital Assistant，简称PDA)等设备。无线终端也可以称为系统、订阅者单元(Subscriber Unit)、订阅者站(Subscriber Station)，移动站(Mobile Station)、移动台(Mobile)、远程站(Remote Station)、远程终端(Remote Terminal)、接入终端(Access Terminal)、用户终端(User  Terminal)、用户代理(User Agent)、用户设备(User Device or User Equipment)，在此不作限定。
本公开的一些实施例的终端通过获取网络设备配置的候选RACH资源，再从候选RACH资源中确定目标RACH资源，通过目标RACH资源发起随机接入流程，以保证当同时存在多种类型的随机接入资源时，通过选择合适的随机接入资源快速可靠地接入网络，以实现随机接入期望达到的特定目的，如RRC连接、RRC重建和切换等。特别地，当用于切换场景时，可以快速接入目标小区，从而达到快速切换的目的。
以上实施例从终端侧介绍了本公开的随机接入方法，下面本实施例将结合附图对网络设备测得随机接入方法做进一步介绍。
图6表示本公开的一些实施例的网络设备侧的随机接入方法的流程示意图。如图6所示，本公开的一些实施例的随机接入方法，应用于网络设备，具体包括以下步骤61-62。
步骤61：为终端配置随机接入的候选随机接入RACH资源。
通过随机接入过程可实现多种目的，如终端初始的无线资源控制RRC连接建立、RRC重建、切换、下行数据到达但下行失步、上行数据到达但上行失步、终端由非激活态转换到激活态以及辅小区的上行同步获取等，因此网络设备基于不同随机接入的目的为终端配置不同的随机接入RACH资源。这里所说的获取随机接入的候选RACH资源，尤其是指获取某种特定目的的随机接入流程的候选RACH资源。
具体地，步骤61包括：为终端配置随机接入的候选RACH资源以及与所述候选RACH资源相关联的同步信号块SS block和/或信道状态信息参考信号CSI-RS。也就是说，候选RACH资源与相应的下行SS block和/或CSI-RS具有映射关系，亦可以说是成对出现，网络设备为终端配置了候选RACH资源，必将配置SS block和/或CSI-RS的资源。
步骤62：将候选RACH资源发送至终端。
其中，候选RACH资源包括公用RACH资源、专用RACH资源和额外RACH资源中的至少一种。网络设备将候选RACH资源发送至终端，供终端从候选RACH资源中选择用于发起随机接入流程的目标RACH资源。
进一步地，公用RACH资源包括：网络设备下发的系统消息或无线资源控制RRC消息中携带的、用于随机接入的前导序列preamble码、时域资源和/或频域资源。
专用RACH资源包括以下至少一项：网络设备为随机接入预留的前导序列preamble码、时域资源、和/或频域资源；与网络设备为随机接入预留的专用同步信号块SS block和/或信道状态信息参考信号CSI-RS相关联的RACH资源；以及，网络设备从公用RACH资源中为随机接入预留的RACH资源。其中，网络设备从公用RACH资源中为随机接入预留的RACH资源为：网络设备从公用RACH资源中为随机接入预留的前导序列preamble码、时域资源和/或频域资源。其中，以上所说的专用RACH资源即可用于非竞争的随机接入流程，亦可应用于竞争的随机接入流程。
额外RACH资源包括以下至少一项：网络设备为随机接入预留的RACH资源；除所述公用RACH资源和专用RACH资源之外的其他RACH资源；以及，与其他同步信号块SS block和/或信道状态信息参考信号CSI-RS相关联的RACH资源；其中，其他SS block为除与所述公用RACH资源和专用RACH资源相关联的SS block之外的SS block；其他CSI-RS为除与所述公用RACH资源和专用RACH资源相关联的CSI-RS之外的CSI-RS。同样地，以上所说的额外RACH资源即可用于非竞争的随机接入流程，亦可应用于竞争的随机接入流程。上述的公用RACH资源、专用RACH资源和额外RACH资源对应的SS block和CSI-RS还可以是其它的参考信号。
下面以切换功能的随机接入方法为例，步骤61具体包括：为终端配置切换功能的随机接入的候选RACH资源。
其中，为终端配置切换功能的随机接入的候选RACH资源的步骤包括：向终端发送携带有用于切换功能的随机接入的候选RACH资源的切换命令；其中，切换命令中还携带有至少部分最小系统消息，即切换命令中携带有部分或全部的最小系统消息。具体地，由源基站向目标基站发起切换请求，目标基站先做接入控制，在允许后向源基站发起切换确认消息，并将终端接入所需要的必要配置通过切换确认消息透传至源基站。源基站向终端发起切换命令，并在切换命令中携带目标基站透传过来的接入所需要的必要配置信息；
或者，向终端发送携带有用于切换功能的随机接入的候选RACH资源的高层信令；具体地，通过高层信令，向终端发送携带有用于切换功能的随机接入的候选RACH资源的移动控制消息。也就是说，网络设备将候选RACH资源承载于高层信令的移动控制消息中发送；
或者，广播携带有用于切换功能的随机接入的候选RACH资源的系统消息。也就是说网络设备通过广播系统消息的方式向终端或邻区终端发送用于切换功能的随机接入的候选RACH资源。
本公开的一些实施例的随机接入方法中，网络设备为终端配置一个或多个候选RACH资源并发送至终端，终端从候选RACH资源中确定用于随机接入的目标RACH，以保证不同目的的随机接入过程正常实现，特别地，当用于切换场景时，可以保证终端快速接入目标小区，从而达到快速切换的目的。
以上实施例介绍了不同场景下的随机接入方法，下面将结合附图对与其对应的网络设备做进一步介绍。
如图7所示，本公开的一些实施例的网络设备700，能实现上述实施例中随机接入方法的细节，并达到相同的效果，该网络设备700具体包括以下功能模块：配置模块710，用于为终端配置随机接入的候选随机接入RACH资源；和，发送模块720，用于将候选RACH资源发送至终端，供终端从候选RACH资源中选择用于发起随机接入流程的目标RACH资源；其中，候选RACH资源包括公用RACH资源、专用RACH资源和额外RACH资源中的至少一种。
其中，公用RACH资源包括：网络设备下发的系统消息或无线资源控制RRC消息中携带的、用于随机接入的前导序列preamble码、时域资源和/或频域资源。
其中，专用RACH资源包括以下至少一项：网络设备为随机接入预留的前导序列preamble码、时域资源、和/或频域资源；与网络设备为随机接入预留的专用同步信号块SS block和/或信道状态信息参考信号CSI-RS相关联的RACH资源；以及，网络设备从公用RACH资源中为随机接入预留的RACH资源。
其中，网络设备从公用RACH资源中为随机接入预留的RACH资源为： 网络设备从公用RACH资源中为随机接入预留的前导序列preamble码、时域资源和/或频域资源。
其中，配置模块710包括：第一配置子模块，用于为终端配置随机接入的候选RACH资源以及与候选RACH资源相关联的同步信号块SS block和/或信道状态信息参考信号CSI-RS。
其中，额外RACH资源包括以下至少一项：网络设备为随机接入预留的RACH资源；除公用RACH资源和专用RACH资源之外的其他RACH资源；以及，与其他同步信号块SS block和/或信道状态信息参考信号CSI-RS相关联的RACH资源；其中，其他SS block为除与公用RACH资源和专用RACH资源相关联的SS block之外的SS block；其他CSI-RS为除与公用RACH资源和专用RACH资源相关联的CSI-RS之外的CSI-RS。
其中，配置模块710包括：第二配置子模块，用于为终端配置切换功能的随机接入的候选RACH资源。
其中，第二配置子模块包括：第一配置单元，用于向终端发送携带有用于切换功能的随机接入的候选RACH资源的切换命令；或者，第二配置单元，用于向终端发送携带有用于切换功能的随机接入的候选RACH资源的高层信令；或者，第二配置单元，用于广播携带有用于切换功能的随机接入的候选RACH资源的系统消息。
其中，切换命令中还携带有至少部分最小系统消息。
其中，发送模块720还包括：第三发送子模块，用于通过高层信令，向终端发送携带有用于切换功能的随机接入的候选RACH资源的移动控制消息。
值得指出的是，本公开的一些实施例的网络设备为终端配置一个或多个候选RACH资源并发送至终端，终端从候选RACH资源中确定用于随机接入的目标RACH，以保证不同目的的随机接入过程正常实现，特别地，当用于切换场景时，可以保证终端快速接入目标小区，从而达到快速切换的目的。
需要说明的是，应理解以上网络设备和终端的各个模块的划分仅仅是一种逻辑功能的划分，实际实现时可以全部或部分集成到一个物理实体上，也可以物理上分开。且这些模块可以全部以软件通过处理元件调用的形式实现；也可以全部以硬件的形式实现；还可以部分模块通过处理元件调用软件的形 式实现，部分模块通过硬件的形式实现。例如，确定模块可以为单独设立的处理元件，也可以集成在上述装置的某一个芯片中实现，此外，也可以以程序代码的形式存储于上述装置的存储器中，由上述装置的某一个处理元件调用并执行以上确定模块的功能。其它模块的实现与之类似。此外这些模块全部或部分可以集成在一起，也可以独立实现。这里所述的处理元件可以是一种集成电路，具有信号的处理能力。在实现过程中，上述方法的各步骤或以上各个模块可以通过处理器元件中的硬件的集成逻辑电路或者软件形式的指令完成。
例如，以上这些模块可以是被配置成实施以上方法的一个或多个集成电路，例如：一个或多个特定集成电路(Application Specific Integrated Circuit，简称ASIC)，或，一个或多个数字信号处理器(digital signal processor，简称DSP)，或，一个或者多个现场可编程门阵列(Field Programmable Gate Array，简称FPGA)等。再如，当以上某个模块通过处理元件调度程序代码的形式实现时，该处理元件可以是通用处理器，例如中央处理器(Central Processing Unit，简称CPU)或其它可以调用程序代码的处理器。再如，这些模块可以集成在一起，以片上系统(system-on-a-chip，简称SOC)的形式实现。
为了更好的实现上述目的，本公开的一些实施例还提供了一种网络设备，该网络设备包括处理器、存储器以及存储于存储器上并可在处理器上运行的计算机程序，处理器执行计算机程序时实现如上所述的随机接入方法中的步骤。本公开的一些实施例还提供了一种计算机可读存储介质，该计算机可读存储介质上存储有计算机程序，计算机程序被处理器执行时实现如上所述的随机接入方法的步骤。
具体地，本公开的一些实施例还提供了一种网络设备。图8表示本公开的一些实施例的网络设备的结构框图。如图8所示，该网络设备800包括：天线81、射频装置82、基带装置83。天线81与射频装置82连接。在上行方向上，射频装置82通过天线81接收信息，将接收的信息发送给基带装置83进行处理。在下行方向上，基带装置83对要发送的信息进行处理，并发送给射频装置82，射频装置82对收到的信息进行处理后经过天线81发送出去。
上述频带处理装置可以位于基带装置83中，以上实施例中网络设备执行的方法可以在基带装置83中实现，该基带装置83包括处理器84和存储器85。
基带装置83例如可以包括至少一个基带板，该基带板上设置有多个芯片，如图8所示，其中一个芯片例如为处理器84，与存储器85连接，以调用存储器85中的程序，执行以上方法实施例中所示的网络设备操作。
该基带装置83还可以包括网络接口86，用于与射频装置82交互信息，该接口例如为通用公共无线接口(common public radio interface，简称CPRI)。
这里的处理器可以是一个处理器，也可以是多个处理元件的统称，例如，该处理器可以是CPU，也可以是ASIC，或者是被配置成实施以上网络设备所执行方法的一个或多个集成电路，例如：一个或多个微处理器DSP，或，一个或者多个现场可编程门阵列FPGA等。存储元件可以是一个存储器，也可以是多个存储元件的统称。
存储器85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，简称ROM)、可编程只读存储器(Programmable ROM，简称PROM)、可擦除可编程只读存储器(Erasable PROM，简称EPROM)、电可擦除可编程只读存储器(Electrically EPROM，简称EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory，简称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，简称SRAM)、动态随机存取存储器(Dynamic RAM，简称DRAM)、同步动态随机存取存储器(Synchronous DRAM，简称SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM，简称DDRSDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，简称ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM，简称SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，简称DRRAM)。本申请描述的存储器85旨在包括但不限于这些和任意其它适合类型的存储器。
具体地，本公开的一些实施例的网络设备还包括：存储在存储器85上并可在处理器84上运行的计算机程序，处理器84调用存储器85中的计算机程 序时处理器84执行图7所示各模块执行的方法。
具体地，计算机程序被处理器84调用时处理器84可用于执行：为终端配置随机接入的候选随机接入RACH资源；将候选RACH资源发送至终端，供终端从候选RACH资源中选择用于发起随机接入流程的目标RACH资源；其中，候选RACH资源包括公用RACH资源、专用RACH资源和额外RACH资源中的至少一种。
具体地，公用RACH资源包括：网络设备下发的系统消息或无线资源控制RRC消息中携带的、用于随机接入的前导序列preamble码、时域资源和/或频域资源。
其中，专用RACH资源包括以下至少一项：网络设备为随机接入预留的前导序列preamble码、时域资源、和/或频域资源；与网络设备为随机接入预留的专用同步信号块SS block和/或信道状态信息参考信号CSI-RS相关联的RACH资源；以及，网络设备从公用RACH资源中为随机接入预留的RACH资源。
其中，网络设备从公用RACH资源中为随机接入预留的RACH资源为：网络设备从公用RACH资源中为随机接入预留的前导序列preamble码、时域资源和/或频域资源。
具体地，计算机程序被处理器84调用时处理器84可用于执行：为终端配置随机接入的候选RACH资源以及与候选RACH资源相关联的同步信号块SS block和/或信道状态信息参考信号CSI-RS。
其中，额外RACH资源包括以下至少一项：网络设备为随机接入预留的RACH资源；除公用RACH资源和专用RACH资源之外的其他RACH资源；以及，与其他同步信号块SS block和/或信道状态信息参考信号CSI-RS相关联的RACH资源；其中，其他SS block为除与公用RACH资源和专用RACH资源相关联的SS block之外的SS block；其他CSI-RS为除与公用RACH资源和专用RACH资源相关联的CSI-RS之外的CSI-RS。
具体地，计算机程序被处理器84调用时处理器84可用于执行：为终端配置切换功能的随机接入的候选RACH资源。
具体地，计算机程序被处理器84调用时处理器84可用于执行：向终端 发送携带有用于切换功能的随机接入的候选RACH资源的切换命令；或者，向终端发送携带有用于切换功能的随机接入的候选RACH资源的高层信令；或者，广播携带有用于切换功能的随机接入的候选RACH资源的系统消息。
其中，切换命令中还携带有至少部分最小系统消息。
具体地，计算机程序被处理器84调用时处理器84可用于执行：通过高层信令，向终端发送携带有用于切换功能的随机接入的候选RACH资源的移动控制消息。
其中，网络设备可以是全球移动通讯(Global System of Mobile communication，简称GSM)或码分多址(Code Division Multiple Access，简称CDMA)中的基站(Base Transceiver Station，简称BTS)，也可以是宽带码分多址(Wideband Code Division Multiple Access，简称WCDMA)中的基站(NodeB，简称NB)，还可以是LTE中的演进型基站(Evolutional Node B，简称eNB或eNodeB)，或者中继站或接入点，或者5G网络中的基站等，在此并不限定。
本公开的一些实施例中的网络设备，网络设备为终端配置一个或多个候选RACH资源并发送至终端，终端从候选RACH资源中确定用于随机接入的目标RACH，以保证不同目的的随机接入过程正常实现，特别地，当用于切换场景时，可以保证终端快速接入目标小区，从而达到快速切换的目的。
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公开的范围。
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。
在本申请所提供的实施例中，应该理解到，所揭露的装置和方法，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，在本公开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。基于这样的理解，本公开的技术方案本质上或者说对相关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)执行本公开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、ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
此外，需要指出的是，在本公开的装置和方法中，显然，各部件或各步骤是可以分解和/或重新组合的。这些分解和/或重新组合应视为本公开的等效方案。并且，执行上述系列处理的步骤可以自然地按照说明的顺序按时间顺序执行，但是并不需要一定按照时间顺序执行，某些步骤可以并行或彼此独立地执行。对本领域的普通技术人员而言，能够理解本公开的方法和装置的全部或者任何步骤或者部件，可以在任何计算装置(包括处理器、存储介质等)或者计算装置的网络中，以硬件、固件、软件或者它们的组合加以实现，这是本领域普通技术人员在阅读了本公开的说明的情况下运用他们的基本编程技能就能实现的。
因此，本公开的目的还可以通过在任何计算装置上运行一个程序或者一 组程序来实现。所述计算装置可以是公知的通用装置。因此，本公开的目的也可以仅仅通过提供包含实现所述方法或者装置的程序代码的程序产品来实现。也就是说，这样的程序产品也构成本公开，并且存储有这样的程序产品的存储介质也构成本公开。显然，所述存储介质可以是任何公知的存储介质或者将来所开发出来的任何存储介质。还需要指出的是，在本公开的装置和方法中，显然，各部件或各步骤是可以分解和/或重新组合的。这些分解和/或重新组合应视为本公开的等效方案。并且，执行上述系列处理的步骤可以自然地按照说明的顺序按时间顺序执行，但是并不需要一定按照时间顺序执行。某些步骤可以并行或彼此独立地执行。
以上所述的是本公开的可选实施方式，应当指出对于本技术领域的普通人员来说，在不脱离本公开所述的原理前提下还可以作出若干改进和润饰，这些改进和润饰也在本公开的保护范围内。

Claims (74)

  1. 一种随机接入方法，应用于终端，包括：
    获取候选随机接入RACH资源；
    从所述候选RACH资源中选择目标RACH资源；其中，所述候选RACH资源包括公用RACH资源、专用RACH资源和额外RACH资源中的至少一种；
    通过所述目标RACH资源发起随机接入流程。
  2. 根据权利要求1所述的随机接入方法，其中，所述公用RACH资源包括：
    网络设备下发的系统消息或无线资源控制RRC消息中携带的、用于随机接入的前导序列preamble码、时域资源和/或频域资源。
  3. 根据权利要求1所述的随机接入方法，其中，所述专用RACH资源包括以下至少一项：
    网络设备为随机接入预留的前导序列preamble码、时域资源、和/或频域资源；
    与网络设备为随机接入预留的专用同步信号块SS block和/或信道状态信息参考信号CSI-RS相关联的RACH资源；以及，
    网络设备从公用RACH资源中为随机接入预留的RACH资源。
  4. 根据权利要求3所述的随机接入方法，其中，网络设备从公用RACH资源中为随机接入预留的RACH资源为：网络设备从公用RACH资源中为随机接入预留的前导序列preamble码、时域资源和/或频域资源。
  5. 根据权利要求1所述的随机接入方法，其中，所述获取候选随机接入RACH资源的步骤，包括：
    获取候选RACH资源以及与所述候选RACH资源相关联的同步信号块SS block和/或信道状态信息参考信号CSI-RS。
  6. 根据权利要求1所述的随机接入方法，其中，所述额外RACH资源包括以下至少一项：
    网络设备为随机接入预留的RACH资源；
    除所述公用RACH资源和专用RACH资源之外的其他RACH资源；以及，
    与其他同步信号块SS block和/或信道状态信息参考信号CSI-RS相关联的RACH资源；其中，其他SS block为除与所述公用RACH资源和专用RACH资源相关联的SS block之外的SS block；其他CSI-RS为除与所述公用RACH资源和专用RACH资源相关联的CSI-RS之外的CSI-RS。
  7. 根据权利要求1所述的随机接入方法，其中，所述获取候选随机接入RACH资源的步骤，包括：
    获取用于切换功能的随机接入的候选RACH资源。
  8. 根据权利要求7所述的随机接入方法，其中，所述获取用于切换功能的随机接入的候选RACH资源的步骤，包括：
    接收网络设备发送的切换命令，从所述切换命令中获取用于切换功能的随机接入的候选RACH资源；或者，
    接收网络设备发送的高层信令，从所述高层信令中获取用于切换功能的随机接入的候选RACH资源；或者，
    获取邻区系统消息，从所述邻区系统消息中获取用于切换功能的随机接入的候选RACH资源。
  9. 根据权利要求8所述的随机接入方法，其中，所述接收网络设备发送的高层信令，从所述高层信令中获取用于切换功能的随机接入的候选RACH资源的步骤，包括：
    接收网络设备发送的携带有移动控制消息的高层信令；
    从所述高层信令的移动控制消息中，获取用于切换功能的随机接入的候选RACH资源。
  10. 根据权利要求8所述的随机接入方法，其中，所述接收网络设备发送的切换命令的步骤，包括：
    接收网络设备发送的携带有至少部分最小系统消息的切换命令。
  11. 根据权利要求8所述的随机接入方法，其中，所述从所述候选RACH资源中选择目标RACH资源的步骤，包括：
    获取所述候选RACH资源中在接收到切换命令后的满足预设条件的前M 个RACH资源；其中，M为大于或等于1的整数；
    将所述前M个RACH资源确定为目标RACH资源。
  12. 根据权利要求11所述的随机接入方法，其中，所述获取所述候选RACH资源中在接收到切换命令后的满足预设条件的前M个RACH资源的步骤，包括：
    获取所述候选RACH资源中在接收到切换命令后的前M个候选RACH资源；或者，
    获取所述候选RACH资源中在接收到切换命令后的前M个非竞争RACH资源；或者，
    获取所述候选RACH资源中在接收到切换命令后、前M个与信号质量高于预设门限值的SS block和/或CSI-RS相关联的RACH资源；或者，
    获取所述候选RACH资源中在接收到切换命令后、前M个与信号质量高于预设门限值的SS block和/或CSI-RS相关联的非竞争RACH资源，确定为目标RACH资源；或者，
    获取所述候选RACH资源中在接收到切换命令后、波束接收质量最好的前M个RACH资源；或者，
    获取所述候选RACH资源中在接收到切换命令后、波束接收质量最好的前M个非竞争RACH资源。
  13. 根据权利要求8所述的随机接入方法，其中，所述获取邻区系统消息的步骤，包括：
    接收邻区系统消息，或者，读取所述终端存储的邻区系统消息。
  14. 根据权利要求1所述的随机接入方法，其中，所述从所述候选RACH资源中选择目标RACH资源的步骤，包括：
    根据与所述候选RACH资源相关联的SS block和/或CSI-RS，从所述候选RACH资源中选择目标RACH资源；或者，
    根据与所述候选RACH资源对应的下行波束的波束接收质量，从所述候选RACH资源中选择目标RACH资源；或者，
    根据预设优先级，从所述候选RACH资源中选择目标RACH资源。
  15. 根据权利要求14所述的随机接入方法，其中，所述根据与所述候选 RACH资源相关联的SS block和/或CSI-RS，从所述候选RACH资源中选择目标RACH资源的步骤，包括：
    将与信号质量高于第一门限值的SS block和/或CSI-RS相关联的候选RACH资源，确定为目标RACH资源。
  16. 根据权利要求15所述的随机接入方法，其中，所述将与信号质量高于第一门限值的SS block和/或CSI-RS相关联的候选RACH资源，确定为目标RACH资源的步骤，包括：
    将与信号质量高于第一门限值的SS block和/或CSI-RS相关联的候选RACH资源中的非竞争RACH资源，确定为目标RACH资源。
  17. 根据权利要求14所述的随机接入方法，其中，所述根据与所述候选RACH资源对应的下行波束的波束接收质量，从所述候选RACH资源中选择目标RACH资源的步骤，包括：
    将波束接收质量最好的前N个波束对应的候选RACH资源，确定为目标RACH资源；N为正整数。
  18. 根据权利要求17所述的随机接入方法，其中，所述将波束接收质量最好的前N个波束对应的候选RACH资源，确定为目标RACH资源的步骤，包括：
    将波束接收质量最好的前N个波束对应的候选RACH资源中的非竞争RACH资源，确定为目标RACH资源。
  19. 根据权利要求1所述的随机接入方法，其中，通过所述目标RACH资源发起随机接入流程的步骤，包括：
    通过目标RACH资源，向网络设备发送随机接入的前导序列preamble码。
  20. 根据权利要求19所述的随机接入方法，其中，当所述终端具备同时监测P个下行波束的能力时，所述通过目标RACH资源，向网络设备发送随机接入的前导序列preamble码的步骤，包括：
    在随机接入响应RAR窗口过期前，在所述目标RACH资源上向网络设备发送X个preamble码；其中，X、P均为正整数，且X小于或等于P；
    在所述RAR窗口过期后，向网络设备发送其他preamble码；其中，所述其他preamble码为除P个preamble码之外的preamble码。
  21. 根据权利要求19所述的随机接入方法，其中，在通过所述目标RACH资源，向网络设备发送随机接入的前导序列preamble码的步骤之后，所述方法还包括：
    在与发送preamble码的RACH资源相关联的SS block和/或CSI-RS对应的下行波束上监测随机接入响应RAR。
  22. 根据权利要求21所述的随机接入方法，其中，当所述终端具备同时监测Q个下行波束的能力时，所述在与发送preamble码的RACH资源相关联的SS block和/或CSI-RS对应的下行波束上监测随机接入响应RAR的步骤，包括：
    在与发送Y个preamble码的目标RACH资源相关联的SS block和/或CSI-RS的下行波束上，监测Y个RAR；其中，Q、Y为正整数，Y小于或等于Q；
    在与发送Y’个preamble码的目标RACH资源相关联的SS block和/或CSI-RS的下行波束上，自主选择监测Q个RAR；其中，Q大于M。
  23. 根据权利要求1所述的随机接入方法，其中，所述从所述候选RACH资源中选择目标RACH资源的步骤，包括：
    将下行获取到的SS block和/或CSI-RS相关联的候选RACH资源，确定为目标RACH资源。
  24. 根据权利要求23所述的随机接入方法，其中，通过所述目标RACH资源发起随机接入流程的步骤，包括：
    通过与下行获取到的SS block和/或CSI-RS相关联的候选RACH资源，向网络设备发送随机接入的前导序列preamble码。
  25. 根据权利要求24所述的随机接入方法，其中，当所述终端接收到L个SS block和/或CSI-RS时，所述通过与下行获取到的SS block和/或CSI-RS相关联的RACH资源，向网络设备发送随机接入的前导序列preamble码的步骤，包括：
    在随机接入响应RAR窗口过期前，通过与下行获取到的SS block和/或CSI-RS相关联的RACH资源，向网络设备发送L’个preamble码；其中，L、L’为正整数，L’小于或等于L。
  26. 一种终端，包括：
    第一获取模块，用于获取候选随机接入RACH资源；
    选择模块，用于从所述候选RACH资源中选择目标RACH资源；其中，所述候选RACH资源包括公用RACH资源、专用RACH资源和额外RACH资源中的至少一种；
    处理模块，用于通过所述目标RACH资源发起随机接入流程。
  27. 根据权利要求26所述的终端，其中，所述公用RACH资源包括：
    网络设备下发的系统消息或无线资源控制RRC消息中携带的、用于随机接入的前导序列preamble码、时域资源和/或频域资源。
  28. 根据权利要求26所述的终端，其中，所述专用RACH资源包括以下至少一项：
    网络设备为随机接入预留的前导序列preamble码、时域资源、和/或频域资源；
    与网络设备为随机接入预留的专用同步信号块SS block和/或信道状态信息参考信号CSI-RS相关联的RACH资源；以及，
    网络设备从公用RACH资源中为随机接入预留的RACH资源。
  29. 根据权利要求28所述的终端，其中，网络设备从公用RACH资源中为随机接入预留的RACH资源为：网络设备从公用RACH资源中为随机接入预留的前导序列preamble码、时域资源和/或频域资源。
  30. 根据权利要求26所述的终端，其中，所述第一获取模块包括：
    第一获取子模块，用于获取候选RACH资源以及与所述候选RACH资源相关联的同步信号块SS block和/或信道状态信息参考信号CSI-RS。
  31. 根据权利要求26所述的终端，其中，所述额外RACH资源包括以下至少一项：
    网络设备为随机接入预留的RACH资源；
    除所述公用RACH资源和专用RACH资源之外的其他RACH资源；以及，
    与其他同步信号块SS block和/或信道状态信息参考信号CSI-RS相关联的RACH资源；其中，其他SS block为除与所述公用RACH资源和专用RACH 资源相关联的SS block之外的SS block；其他CSI-RS为除与所述公用RACH资源和专用RACH资源相关联的CSI-RS之外的CSI-RS。
  32. 根据权利要求26所述的终端，其中，所述第一获取模块包括：
    第二获取子模块，用于获取用于切换功能的随机接入的候选RACH资源。
  33. 根据权利要求32所述的终端，其中，所述第二获取子模块包括：
    第一获取单元，用于接收网络设备发送的切换命令，从所述切换命令中获取用于切换功能的随机接入的候选RACH资源；或者，
    第二获取单元，用于接收网络设备发送的高层信令，从所述高层信令中获取用于切换功能的随机接入的候选RACH资源；或者，
    第三获取单元，用于获取邻区系统消息，从所述邻区系统消息中获取用于切换功能的随机接入的候选RACH资源。
  34. 根据权利要求33所述的终端，其中，所述第二获取单元包括：
    第一接收子单元，用于接收网络设备发送的携带有移动控制消息的高层信令；
    第一获取子单元，用于从所述高层信令的移动控制消息中，获取用于切换功能的随机接入的候选RACH资源。
  35. 根据权利要求33所述的终端，其中，所述第一获取模块包括：
    第二接收子单元，用于接收网络设备发送的携带有至少部分最小系统消息的切换命令。
  36. 根据权利要求33所述的终端，其中，所述选择模块包括：
    第三获取子模块，用于获取所述候选RACH资源中在接收到切换命令后的前M个RACH资源；其中，M为大于或等于1的整数；
    第一确定子模块，用于根据所述前M个RACH资源，确定目标RACH资源。
  37. 根据权利要求36所述的终端，其中，所述第三获取子模块包括：
    第四获取单元，用于获取所述候选RACH资源中在接收到切换命令后的前M个候选RACH资源；或者，
    第五获取单元，用于获取所述候选RACH资源中在接收到切换命令后的前M个非竞争RACH资源；或者，
    第六获取单元，用于获取所述候选RACH资源中在接收到切换命令后、前M个与信号质量高于预设门限值的SS block和/或CSI-RS相关联的RACH资源；或者，
    第七获取单元，用于获取所述候选RACH资源中在接收到切换命令后、前M个与信号质量高于预设门限值的SS block和/或CSI-RS相关联的非竞争RACH资源，确定为目标RACH资源；或者，
    第八获取单元，用于获取所述候选RACH资源中在接收到切换命令后、波束接收质量最好的前M个RACH资源；或者，
    第九获取单元，用于获取所述候选RACH资源中在接收到切换命令后、波束接收质量最好的前M个非竞争RACH资源。
  38. 根据权利要求33所述的终端，其中，所述第三获取单元包括：
    第三接收子单元，用于接收邻区系统消息，或者，
    读取子单元，用于读取所述终端存储的邻区系统消息。
  39. 根据权利要求26所述的终端，其中，所述选择模块包括：
    第一选择子模块，用于根据与所述候选RACH资源相关联的SS block和/或CSI-RS，从所述候选RACH资源中选择目标RACH资源；或者，
    第二选择子模块，用于根据与所述候选RACH资源对应的下行波束的波束接收质量，从所述候选RACH资源中选择目标RACH资源；或者，
    第三选择子模块，用于根据预设优先级，从所述候选RACH资源中选择目标RACH资源。
  40. 根据权利要求39所述的终端，其中，所述第一选择子模块包括：
    第一确定单元，用于将与信号质量高于第一门限值的SS block和/或CSI-RS相关联的候选RACH资源，确定为目标RACH资源。
  41. 根据权利要求40所述的终端，其中，所述第一确定单元包括：
    第一确定子单元，用于将与信号质量高于第一门限值的SS block和/或CSI-RS相关联的候选RACH资源中的非竞争RACH资源，确定为目标RACH资源。
  42. 根据权利要求39所述的终端，其中，所述第二选择子模块包括：
    第二确定单元，用于将波束接收质量最好的前N个波束对应的候选 RACH资源，确定为目标RACH资源；N为正整数。
  43. 根据权利要求42所述的终端，其中，所述第二确定单元包括：
    第二确定子单元，用于将波束接收质量最好的前N个波束对应的候选RACH资源中的非竞争RACH资源，确定为目标RACH资源。
  44. 根据权利要求26所述的终端，其中，所述处理模块包括：
    第一发送子模块，用于通过目标RACH资源，向网络设备发送随机接入的前导序列preamble码。
  45. 根据权利要求44所述的终端，其中，所述第一发送子模块包括：
    第一发送单元，用于当所述终端具备同时监测P个下行波束的能力时，在随机接入响应RAR窗口过期前，在所述目标RACH资源上向网络设备发送X个preamble码；其中，X、P均为正整数，且X小于或等于P；
    第二发送单元，用于在所述RAR窗口过期后，向网络设备发送其他preamble码；其中，所述其他preamble码为除P个preamble码之外的preamble码。
  46. 根据权利要求44所述的终端，其中，所述处理模块还包括：
    监测子模块，用于在与发送preamble码的RACH资源相关联的SS block和/或CSI-RS对应的下行波束上监测随机接入响应RAR。
  47. 根据权利要求46所述的终端，其中，所述监测子模块包括：
    第一监测单元，用于当所述终端具备同时监测Q个下行波束的能力时，在与发送Y个preamble码的目标RACH资源相关联的SS block和/或CSI-RS的下行波束上，监测Y个RAR；其中，Q、Y为正整数，Y小于或等于Q；
    第二监测单元，用于在与发送Y’个preamble码的目标RACH资源相关联的SS block和/或CSI-RS的下行波束上，自主选择监测Q个RAR；其中，Q大于M。
  48. 根据权利要求26所述的终端，其中，所述选择模块还包括：
    第四选择子模块，用于将下行获取到的SS block和/或CSI-RS相关联的候选RACH资源，确定为目标RACH资源。
  49. 根据权利要求48所述的终端，其中，所述处理模块包括：
    第二发送子模块，用于通过与下行获取到的SS block和/或CSI-RS相关 联的候选RACH资源，向网络设备发送随机接入的前导序列preamble码。
  50. 根据权利要求49所述的终端，其中，所述第二发送子模块包括：
    第三发送单元，用于当所述终端接收到L个SS block和/或CSI-RS时，在随机接入响应RAR窗口过期前，通过与下行获取到的SS block和/或CSI-RS相关联的RACH资源，向网络设备发送L’个preamble码；其中，L、L’为正整数，L’小于或等于L。
  51. 一种终端，包括：
    处理器、存储器以及存储于所述存储器上并可在所述处理器上运行的计算机程序，所述计算机程序被所述处理器执行时所述处理器实现如权利要求1至25中任一项所述的随机接入方法的步骤。
  52. 一种计算机可读存储介质，其中，所述计算机可读存储介质上存储有计算机程序，所述计算机程序被处理器执行时所述处理器实现如权利要求1至25中任一项所述的随机接入方法的步骤。
  53. 一种随机接入方法，应用于网络设备，包括：
    为终端配置随机接入的候选随机接入RACH资源；
    将所述候选RACH资源发送至终端，供所述终端从所述候选RACH资源中选择用于发起随机接入流程的目标RACH资源；
    其中，所述候选RACH资源包括公用RACH资源、专用RACH资源和额外RACH资源中的至少一种。
  54. 根据权利要求53所述的随机接入方法，其中，所述公用RACH资源包括：
    网络设备下发的系统消息或无线资源控制RRC消息中携带的、用于随机接入的前导序列preamble码、时域资源和/或频域资源。
  55. 根据权利要求53所述的随机接入方法，其中，所述专用RACH资源包括以下至少一项：
    网络设备为随机接入预留的前导序列preamble码、时域资源、和/或频域资源；
    与网络设备为随机接入预留的专用同步信号块SS block和/或信道状态信息参考信号CSI-RS相关联的RACH资源；以及，
    网络设备从公用RACH资源中为随机接入预留的RACH资源。
  56. 根据权利要求55所述的随机接入方法，其中，网络设备从公用RACH资源中为随机接入预留的RACH资源为：网络设备从公用RACH资源中为随机接入预留的前导序列preamble码、时域资源和/或频域资源。
  57. 根据权利要求53所述的随机接入方法，其中，所述为终端配置随机接入的候选随机接入RACH资源的步骤，包括：
    为终端配置随机接入的候选RACH资源以及与所述候选RACH资源相关联的同步信号块SS block和/或信道状态信息参考信号CSI-RS。
  58. 根据权利要求53所述的随机接入方法，其中，所述额外RACH资源包括以下至少一项：
    网络设备为随机接入预留的RACH资源；
    除所述公用RACH资源和专用RACH资源之外的其他RACH资源；以及，
    与其他同步信号块SS block和/或信道状态信息参考信号CSI-RS相关联的RACH资源；其中，其他SS block为除与所述公用RACH资源和专用RACH资源相关联的SS block之外的SS block；其他CSI-RS为除与所述公用RACH资源和专用RACH资源相关联的CSI-RS之外的CSI-RS。
  59. 根据权利要求53所述的随机接入方法，其中，所述为终端配置随机接入的候选随机接入RACH资源的步骤，包括：
    为终端配置切换功能的随机接入的候选RACH资源。
  60. 根据权利要求59所述的随机接入方法，其中，所述为终端配置切换功能的随机接入的候选RACH资源的步骤，包括：
    向终端发送携带有用于切换功能的随机接入的候选RACH资源的切换命令；或者，
    向终端发送携带有用于切换功能的随机接入的候选RACH资源的高层信令；或者，
    广播携带有用于切换功能的随机接入的候选RACH资源的系统消息。
  61. 根据权利要求60所述的随机接入方法，其中，所述切换命令中还携带有至少部分最小系统消息。
  62. 根据权利要求60所述的随机接入方法，其中，向终端发送携带有用于切换功能的随机接入的候选RACH资源的高层信令的步骤，包括：
    通过高层信令，向终端发送携带有用于切换功能的随机接入的候选RACH资源的移动控制消息。
  63. 一种网络设备，包括：
    配置模块，用于为终端配置随机接入的候选随机接入RACH资源；
    发送模块，用于将所述候选RACH资源发送至终端，供所述终端从所述候选RACH资源中选择用于发起随机接入流程的目标RACH资源；
    其中，所述候选RACH资源包括公用RACH资源、专用RACH资源和额外RACH资源中的至少一种。
  64. 根据权利要求63所述的网络设备，其中，所述公用RACH资源包括：
    网络设备下发的系统消息或无线资源控制RRC消息中携带的、用于随机接入的前导序列preamble码、时域资源和/或频域资源。
  65. 根据权利要求63所述的网络设备，其中，所述专用RACH资源包括以下至少一项：
    网络设备为随机接入预留的前导序列preamble码、时域资源、和/或频域资源；
    与网络设备为随机接入预留的专用同步信号块SS block和/或信道状态信息参考信号CSI-RS相关联的RACH资源；以及，
    网络设备从公用RACH资源中为随机接入预留的RACH资源。
  66. 根据权利要求65所述的网络设备，其中，网络设备从公用RACH资源中为随机接入预留的RACH资源为：网络设备从公用RACH资源中为随机接入预留的前导序列preamble码、时域资源和/或频域资源。
  67. 根据权利要求63所述的网络设备，其中，所述配置模块包括：
    第一配置子模块，用于为终端配置随机接入的候选RACH资源以及与所述候选RACH资源相关联的同步信号块SS block和/或信道状态信息参考信号CSI-RS。
  68. 根据权利要求63所述的网络设备，其中，所述额外RACH资源包 括以下至少一项：
    网络设备为随机接入预留的RACH资源；
    除所述公用RACH资源和专用RACH资源之外的其他RACH资源；以及，
    与其他同步信号块SS block和/或信道状态信息参考信号CSI-RS相关联的RACH资源；其中，其他SS block为除与所述公用RACH资源和专用RACH资源相关联的SS block之外的SS block；其他CSI-RS为除与所述公用RACH资源和专用RACH资源相关联的CSI-RS之外的CSI-RS。
  69. 根据权利要求63所述的网络设备，其中，所述配置模块包括：
    第二配置子模块，用于为终端配置切换功能的随机接入的候选RACH资源。
  70. 根据权利要求69所述的网络设备，其中，所述第二配置子模块包括：
    第一配置单元，用于向终端发送携带有用于切换功能的随机接入的候选RACH资源的切换命令；或者，
    第二配置单元，用于向终端发送携带有用于切换功能的随机接入的候选RACH资源的高层信令；或者，
    第二配置单元，用于广播携带有用于切换功能的随机接入的候选RACH资源的系统消息。
  71. 根据权利要求70所述的网络设备，其中，所述切换命令中还携带有至少部分最小系统消息。
  72. 根据权利要求70所述的网络设备，其中，发送模块还包括：
    第三发送子模块，用于通过高层信令，向终端发送携带有用于切换功能的随机接入的候选RACH资源的移动控制消息。
  73. 一种网络设备，包括：
    处理器、存储器以及存储于所述存储器上并可在所述处理器上运行的计算机程序，所述处理器执行所述计算机程序时所述处理器实现如权利要求53至62任一项所述的随机接入方法的步骤。
  74. 一种计算机可读存储介质，其中，所述计算机可读存储介质上存储有计算机程序，所述计算机程序被处理器执行时实现如权利要求53至62中 任一项所述的随机接入方法的步骤。
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