WO2019113753A1 - 用于缩短接入时延的方法、装置、用户设备及基站 - Google Patents

用于缩短接入时延的方法、装置、用户设备及基站 Download PDF

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Publication number
WO2019113753A1
WO2019113753A1 PCT/CN2017/115497 CN2017115497W WO2019113753A1 WO 2019113753 A1 WO2019113753 A1 WO 2019113753A1 CN 2017115497 W CN2017115497 W CN 2017115497W WO 2019113753 A1 WO2019113753 A1 WO 2019113753A1
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Prior art keywords
base station
user equipment
random access
message
access
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Application number
PCT/CN2017/115497
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English (en)
French (fr)
Inventor
洪伟
Original Assignee
北京小米移动软件有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 北京小米移动软件有限公司 filed Critical 北京小米移动软件有限公司
Priority to PCT/CN2017/115497 priority Critical patent/WO2019113753A1/zh
Priority to CN201780002110.3A priority patent/CN109451835B/zh
Priority to US16/772,032 priority patent/US11252644B2/en
Publication of WO2019113753A1 publication Critical patent/WO2019113753A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/14—Access restriction or access information delivery, e.g. discovery data delivery using user query or user detection
    • 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
    • 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
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/008—Transmission of channel access control information with additional processing of random access related information at receiving side
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/18—Management of setup rejection or failure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/02—Access restriction performed under specific conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an access point

Definitions

  • the present disclosure relates to the field of communications technologies, and in particular, to a method, an apparatus, a user equipment, and a base station for shortening an access delay.
  • the user equipment (User Equipment, UE for short) performs the contention-based random access procedure, and the base station can perform contention resolution through the message 4 MSG4 of the random access procedure. If the UE receives the MSG4, it finds that there is no contention resolution. If the method is successful, the random access procedure is initiated again after the backoff parameter is rolled back for a period of time, until the number of random access attempts by the UE reaches the maximum allowed number of random accesses, and the UE cannot select the other random access times. The base station performs random access.
  • the contention-based random access procedure in the related art may cause a large access delay for UEs that cannot successfully access.
  • the embodiments of the present disclosure provide a method, an apparatus, a user equipment, and a base station for shortening an access delay, so as to prevent a user equipment from repeatedly sending a random access request to a base station that cannot access.
  • the delay of the user equipment accessing the base station is shortened.
  • a method for shortening an access delay is provided, which is applied to a base station, and the method includes:
  • the message 4 of the random access procedure is sent to the user equipment, where the message 4 carries the cause value of the base station denying access.
  • the message 4 further carries the neighbor base station information of the neighboring base station that the user equipment can perform random access.
  • the method further includes:
  • Determining whether to allow the user equipment to access based on the service type and the network status of the base station.
  • the method further includes:
  • the service type of the service to be transmitted of the user equipment is parsed from the message 3 of the random access procedure sent by the user equipment.
  • determining whether to allow the user equipment to access based on the service type and the network status of the base station includes:
  • the access priority of the user equipment is set to a high priority, and the first type indicates that the to-be-transmitted service is a service type that is ultra-reliable and low-latency;
  • the user equipment of the base station is preferentially allowed to access the high priority user equipment when the network status of the base station satisfies the condition of accessing the new user equipment.
  • a method for shortening an access delay is provided on a user equipment, where the method includes:
  • a target base station that performs a random access request again is determined.
  • the message 4 further carries the neighbor base station information of the neighboring base station that the user equipment can perform random access;
  • Determining, by the cause value, the target base station that performs the random access request again including:
  • the base station If it is determined that the base station is not to perform random access again according to the cause value, selecting one base station from the neighboring base stations identified by the neighbor base station information as the target base station;
  • determining, according to the cause value, a target base station that performs a random access request again including:
  • the base station If it is determined that the base station is not to perform random access again based on the cause value, perform a cell selection operation, and use the accessible base station with the best signal quality as the target base station.
  • the method further includes:
  • the random access preamble is transmitted through a message of the random access procedure.
  • the method further includes:
  • the service type of the service to be transmitted is sent through message three of the random access procedure.
  • an apparatus for shortening an access delay is provided, which is applied to a base station, where the apparatus includes:
  • the first receiving module is configured to receive the message 3 of the random access procedure sent by the user equipment;
  • the first sending module is configured as a first sending module, configured to send a message 4 of the random access procedure to the user equipment when determining to reject the access of the user equipment, where the message 4 carries the base station rejecting The reason value of the access.
  • the message 4 further carries the neighbor base station information of the neighboring base station that the user equipment can perform random access.
  • the apparatus further includes:
  • a first determining module configured to determine a service type of the service to be transmitted of the user equipment and a network status of the base station
  • the second determining module is configured to determine whether to allow the user equipment to access based on the service type determined by the first determining module and the network status of the base station.
  • the apparatus further includes:
  • the first parsing module is configured to parse the random access preamble from the message 1 of the random access procedure sent by the user equipment;
  • a third determining module configured to determine, according to a correspondence between the random access preamble and the service type, a service type of the service to be transmitted of the user equipment;
  • a second parsing module configured to parse the message 3 of the random access procedure sent by the user equipment The service type of the service to be transmitted of the user equipment.
  • the second determining module comprises:
  • a first setting sub-module configured to: if the service type is the first type, set an access priority of the user equipment to a high priority, where the first type indicates that the to-be-transmitted service is ultra-reliable Low latency business type;
  • the second setting sub-module is configured to set the access priority of the user equipment to a low priority if the service type is not the first type;
  • the access sub-module is configured to preferentially allow the user equipment with the access priority to be a high priority to access the network device in the base station to meet the condition of accessing the new user equipment.
  • an apparatus for shortening an access delay is provided on a user equipment, where the apparatus includes:
  • a second receiving module configured to receive a message 4 of a random access procedure sent by the base station
  • a third parsing module configured to parse, from the message 4 received by the second receiving module, a cause value of the base station denying access
  • the fourth determining module is configured to determine, according to the cause value parsed by the third parsing module, a target base station that performs a random access request again.
  • the message 4 further carries the neighbor base station information of the neighboring base station that the user equipment can perform random access;
  • the fourth determining module includes:
  • a first selection sub-module configured to: if it is determined that the base station is not to perform random access again according to the cause value, select one base station from the neighboring base stations identified by the neighbor base station information as the target base station;
  • the first determining submodule is configured to determine the base station as the target base station if it is determined to perform random access again to the base station based on the cause value.
  • the fourth determining module comprises:
  • a second determining submodule configured to determine, according to the cause value, that the base station performs random access again, determining the base station as the target base station;
  • the second selection submodule is configured to perform a cell selection operation and use the accessible base station with the best signal quality as the target base station if it is determined that the base station is not to perform random access again based on the cause value.
  • the apparatus further includes:
  • a fifth determining module configured to determine, according to a service type of the service to be transmitted, a random access preamble to be sent, where the random access preamble has a corresponding relationship with the service type
  • the second sending module is configured to send the random access preamble determined by the sixth determining module by using a message of the random access procedure.
  • the apparatus further includes:
  • the third sending module is configured to send the service type of the service to be transmitted through the message 3 of the random access procedure.
  • a user equipment including:
  • a memory for storing processor executable instructions
  • processor is configured to:
  • a target base station that performs a random access request again is determined.
  • a base station including:
  • a memory for storing processor executable instructions
  • processor is configured to:
  • the message 4 of the random access procedure is sent to the user equipment, where the message 4 carries the cause value of the base station denying access.
  • a non-transitory computer readable storage medium having stored thereon computer instructions that, when executed by a processor, implement the following steps:
  • a target base station that performs a random access request again is determined.
  • a non-transitory computer readable storage medium having stored thereon computer instructions that, when executed by a processor, implement the following steps:
  • the message 4 of the random access procedure is sent to the user equipment, where the message 4 carries the cause value of the base station denying access.
  • the base station When the UE performs contention-based random access, if the base station rejects the user equipment access, it may be randomly connected. In the fourth message of the incoming process, the reason value of the user equipment access is rejected, for example, the reason why the base station is overloaded, and the user equipment receives the message of the random access procedure, if it is determined that the access cannot be accessed based on the cause value.
  • the base station requesting access can select another base station to access.
  • FIG. 1A is a flowchart of a method for shortening an access delay according to an exemplary embodiment.
  • FIG. 1B is a scenario diagram of a method for shortening an access delay according to an exemplary embodiment.
  • FIG. 2 is a flow chart showing another method for shortening an access delay according to an exemplary embodiment.
  • FIG. 3 is a flow chart showing another method for shortening an access delay according to an exemplary embodiment.
  • FIG. 4 is a flowchart of a method for shortening an access delay according to an exemplary embodiment.
  • FIG. 5 is a flow chart showing another method for shortening an access delay according to an exemplary embodiment.
  • FIG. 6 is a flowchart of another method for shortening an access delay, according to an exemplary embodiment.
  • FIG. 7 is a block diagram of an apparatus for shortening an access delay, according to an exemplary embodiment.
  • FIG. 8 is a block diagram of another apparatus for shortening an access delay, according to an exemplary embodiment.
  • FIG. 9 is a block diagram of an apparatus for shortening an access delay, according to an exemplary embodiment.
  • FIG. 10 is a block diagram of another apparatus for shortening an access delay, according to an exemplary embodiment.
  • FIG. 11 is a block diagram of an apparatus suitable for shortening an access delay, according to an exemplary embodiment.
  • FIG. 12 is a block diagram of an apparatus suitable for shortening an access delay, according to an exemplary embodiment.
  • the UE can access through contention-based random access.
  • the internet In the contention-based random access procedure, the UE sends a preamble to the base station through the message 1 (MSG1) of the random access procedure, and when receiving the MSG1, the base station may send a random access response message to the UE, that is, random access
  • the UE may send the message 3 of the random access procedure (MSG3) on the uplink resource allocated by the base station after receiving the MSG2.
  • the MSG3 message may be an RRC connection request message.
  • the base station sends a message 4 (MSG4) of the random access procedure to the UE based on the MSG3, and the UE can perform a contention determination based on the MSG4 to determine whether the base station is successfully accessed.
  • MSG4 message 4
  • FIG. 1A is a flowchart of a method for shortening an access delay according to an exemplary embodiment
  • FIG. 1B is a scenario of a method for shortening an access delay according to an exemplary embodiment.
  • the method for shortening the access delay can be applied to a base station.
  • the method for shortening the access delay includes the following steps 101-102:
  • step 101 message 3 of the random access procedure sent by the user equipment is received.
  • the message type 3 of the random access procedure may carry the service type of the service to be transmitted of the user equipment, and the service type of the service to be transmitted is usually associated with the device type of the user equipment.
  • the service type of the user equipment to be transmitted may be indicated by the type of the device that carries the user equipment.
  • the device type is the vehicle networking device
  • the service type of the service to be transmitted of the user equipment may be determined to be the URLLC service type.
  • the correspondence between the service type and the device type may be pre-agreed by the system, and the base station may determine the user based on the correspondence between the service type and the device type after receiving the device type sent by the user equipment. The type of service of the device to be transmitted.
  • the service type of the service to be transmitted of the user equipment may be directly carried in the MSG3 of the message 3.
  • the service type of the service to be transmitted of the user equipment is eMBB service type, URLLC service type, massive machine type communication (massive) Machine type of communication (referred to as mMTC) service type, and so on, different service types have different requirements on bandwidth, rate, delay, and reliability.
  • the service type may also be a specific type of the service to be transmitted of the user equipment, for example, the service to be transmitted is a video service, or the service to be transmitted is an ordinary Internet service, and the like.
  • step 102 when it is determined that the user equipment access is denied, the message 4 of the random access procedure is sent to the user equipment, and the message 4 carries the reason value of the base station denying access.
  • the base station may determine whether to allow user equipment access based on its own network status and the service type of the user equipment. For example, if the base station load is too high, the user equipment access may be temporarily denied, or provided by the base station. If the type of the service does not match the service type of the service to be transmitted of the user equipment, the user equipment is denied access, and the like, if the base station denies the user equipment access, the user equipment access may be carried in the message 4 of the random access. The reason value.
  • the mobile network is an LTE network (the disclosed technical solution is not limited to a 4G network, and may also be applied to a new generation network such as a 5G network), and the base station is an evolved base station (eNB).
  • the eNB 10 receives the random access request initiated by the UE 30, and when it is determined to reject the UE 30 access, it may be randomly connected.
  • the reason value of the user equipment access is rejected, and if the UE 30 receives the message 4, if the contention is a competition failure, the reason value may be parsed from the message 4, and then the access value is determined according to the cause value.
  • the eNB 10 also accesses other base stations capable of performing random access, such as the eNB 20, thereby preventing the UE 30 from repeatedly initiating a random access request to the eNB 10 when determining that the eNB 10 cannot provide services for itself, thereby reducing the access delay.
  • the base station may reject the user equipment access in the message 4 of the random access procedure.
  • the cause value such as the cause value of the base station load being too high, is that when the user equipment receives the message 4 of the random access procedure, if it is determined that the base station that requested the access is not accessible based on the cause value, the other base station can be selected. In.
  • the UE may select a suitable base station to perform random access, and avoid the extension of the access caused by the random access to the non-accessible base station. problem.
  • FIG. 2 is a flowchart of another method for shortening an access delay according to an exemplary embodiment of the present disclosure.
  • a base station is receiving a message through a random access procedure by using the foregoing method provided by an embodiment of the present disclosure.
  • the message 3 is sent to the user equipment as an example, as an example, as shown in FIG. 2, the following steps are included:
  • step 201 the service type of the service to be transmitted of the user equipment and the network status of the base station are determined.
  • the service type of the service to be transmitted of the user equipment may be indicated by the device type of the user equipment.
  • the device type of the user equipment is a vehicle networking terminal, the service to be transmitted of the terminal may be described.
  • the type of business is ultra-reliable and low-latency services.
  • the service type of the service to be transmitted of the user equipment may include an eMBB service type, a URLLC service type, an mMTC service type, and the like, and different service types have different requirements on bandwidth, rate, delay, reliability, and the like. .
  • the user equipment may indicate its own service type in message one of the random access procedure.
  • the communication system may pre-establish the correspondence between the random access preamble and the service type.
  • the preamble 1 corresponds to the ultra-reliable low-latency service type
  • the preamble 2 corresponds to the eMBB service.
  • Type, etc. when the service type of the service to be transmitted of the user equipment is a super reliable low delay service type, the random access can be performed by sending the preamble 1 through the message.
  • One type of service may correspond to a set of access preambles, instead of only one access preamble.
  • the user equipment may also indicate its own service type in message three of the random access procedure, by adding a new signaling element in message three, and indicating itself through the new signaling element. business type.
  • the user equipment can indicate the service type of the user equipment by parsing the message 1 or the message 3 of the random access procedure, because the user equipment can indicate its own service type through the message 1 or the message 3 of the random access procedure. .
  • the network status of the base station may be used to measure whether the base station can access the user equipment, and the network status of the base station may be indicated by the load of the base station, the type of service supported by the base station, and the like.
  • the network status of the base station is a load. Too high.
  • step 202 based on the service type and the network status of the base station, it is determined whether the user equipment is allowed to access. If the user equipment access is determined to be denied, step 203 is performed. If it is determined that the user equipment is allowed to access, step 205 is performed.
  • the base station can preferentially consider the user equipment whose access service type is ultra-reliable and low-latency. For example, when the base station can be heavy, for example, the base station determines that it can only allow a small number of user equipments at present, such as If the smart device allows access to the three devices, the user device with the service type being ultra-reliable and low-latency can be preferentially accessed. For the user device whose service type is not ultra-reliable and low-latency, the access can be determined.
  • the service type may also be a specific type of the service to be transmitted of the user equipment, for example, the service to be transmitted is a video service, or the service to be transmitted is an ordinary Internet service, and the like. If the service type of the service to be transmitted of the user equipment is a video service, and the base station usually provides a common Internet service, and the support for the video service is relatively low, the base station may determine to reject the user equipment access.
  • step 203 when it is determined that the user equipment access is denied, the message 4 of the random access procedure is sent to the user equipment, and the message 4 carries the cause value of the base station rejecting the access, and the process ends.
  • message four can be obtained by adding a reason value for denying user equipment access in message four of the random access procedure.
  • a signaling element may be added to message four, and the reason value for denying user equipment access is indicated by the newly added signaling element.
  • the cause value may be a high load, a business type mismatch, and the like.
  • the message 4 can also carry the neighbor of the neighboring base station that the user equipment can perform random access.
  • Base station information the base station can obtain the base station information of the neighboring base station through the inter-base station interface, and further determine the neighboring base station that the user equipment can perform random access.
  • the neighbor base station information of the neighboring base station may be base station identification information.
  • step 204 a message four indicating a random access procedure for successful contention resolution is sent to the user equipment.
  • the base station may preferentially allow the user equipment with the service type of the ultra-reliable low-latency to access based on the service type of the user equipment, and may use the message of the random access procedure when determining to deny the user equipment access.
  • Carrying the reason value of the rejection so that the user equipment determines whether to continue to perform random access to the base station based on the cause value, and reselects a base station to perform random access when determining not to continue to perform random access to the base station;
  • the message 4 carries the neighbor base station information that the user equipment can access randomly, thereby helping the user equipment to determine the target base station that initiates the random access again, and shorten the access time of the user equipment.
  • FIG. 3 is a flowchart of another method for shortening an access delay according to an exemplary embodiment.
  • the foregoing method uses the foregoing method provided by an embodiment of the present disclosure to determine, based on a service type, which base stations are allowed to be prioritized.
  • the access is taken as an example for example. As shown in FIG. 3, the following steps are included:
  • step 301 the service type of the service to be transmitted of the user equipment and the network status of the base station are determined, and step 302 or step 303 is performed.
  • step 301 can be referred to the description of step 201 of the embodiment shown in FIG. 2, and details are not described herein.
  • step 302 if the service type is the first type, the access priority of the user equipment is set to a high priority, and the first type indicates that the service to be transmitted is a service type that is ultra-reliable and low-latency, and step 304 is performed.
  • step 303 if the service type is not the first type, the access priority of the user equipment is set to a low priority.
  • the service type can be divided into two types, one is the first type, and the other is not the first type, thereby the user equipment with strict delay requirements and the user equipment with less strict delay requirements. separate.
  • the user equipment may be set with different access priorities according to the service type of the user equipment, for example, if the service type is ultra-reliable and low-latency, It can be set to a high priority to allow the user equipment to access as much as possible, and if it is not a super reliable low-latency service type, it indicates that the user equipment does not have strict delay requirements, and the base station cannot currently access too.
  • the access priority of the user device can be set to a low priority.
  • step 304 the user equipment of the high priority is preferentially allowed to access the network state of the base station to meet the condition of accessing the new user equipment.
  • condition for accessing the new user equipment can be understood as the current load of the base station is not overloaded, and the new user equipment can be allowed to access.
  • the base station can set the corresponding access priority for the user equipment according to whether the service type of the user equipment is the first type, thereby enabling the base station to preferentially access the ultra-reliable and low-latency user equipment, thereby further reducing Ultra-reliable low latency user equipment access delay.
  • FIG. 4 is a flowchart of a method for shortening an access delay according to an exemplary embodiment; the method for shortening an access delay may be applied to a user equipment, and this embodiment is performed in conjunction with FIG. 1B.
  • the method for shortening the access delay includes the following steps 401-403:
  • step 401 a message four of the random access procedure sent by the base station is received.
  • step 402 the cause value of the base station's denial of access is resolved from message four.
  • the user equipment may determine whether the contention conflict is resolved based on the contention determination in the message 4.
  • the method for the contention determination may refer to the competition determination in the related art. method.
  • the cause value of the base station's denial of access may be parsed from message four, that is, message four of the random access procedure.
  • step 403 based on the cause value, the target base station that performs the random access request again is determined.
  • the base station may be used as the target base station, and the random access is re-initiated after the backoff period, for example, the cause value.
  • the user equipment can directly initiate random access to the base station identified by the neighbor base station information; If the base station does not carry the neighbor base station information of the neighboring base station that the user equipment can perform random access in the message 4, the user equipment may perform a cell selection operation, and use the accessible base station with the best signal quality as the target base station.
  • the mobile network is an LTE network (the disclosed technical solution is not limited to a 4G network, and may also be applied to a new generation network such as a 5G network), and the base station is an evolved base station (eNB).
  • the eNB 10 receives the random access request initiated by the UE 30, and when it is determined to reject the UE 30 access, it may be randomly connected.
  • the reason value of the user equipment access is rejected, and if the UE 30 receives the message 4, if the contention is a competition failure, the reason value may be parsed from the message 4, and then the access value is determined according to the cause value.
  • eNB10 Or accessing other base stations capable of performing random access, such as the eNB 20, thereby preventing the UE 30 from repeatedly initiating a random access request to the eNB 10 when determining that the eNB 10 cannot provide services for itself, thereby reducing the access delay.
  • the base station after receiving the message 4 of the random access procedure sent by the base station, if the contention is determined to be a contention failure, the base station that can be obtained by parsing the message four rejects the access.
  • the cause value determines the target base station that initiates the random access next time, which avoids the problem that the contention-based random access procedure of the related technology can cause a large access delay to the UE that cannot successfully access, and can shorten the user equipment. Access delay.
  • FIG. 5 is a flowchart of another method for shortening an access delay according to an exemplary embodiment.
  • This embodiment uses the foregoing method provided by the embodiment of the present disclosure to indicate how a user equipment indicates its own service to a base station.
  • the type is exemplified for example, as shown in FIG. 5, and includes the following steps:
  • step 501 the random access preamble to be transmitted is determined according to the service type of the service to be transmitted, and the random access preamble has a corresponding relationship with the service type.
  • the user equipment may indicate its own service type in the message 1 of the random access procedure.
  • the communication system may pre-establish the correspondence between the random access preamble and the service type.
  • the relationship for example, the preamble 1 corresponds to the service type of the ultra-reliable low-latency service, and the preamble 2 corresponds to the eMBB service type, etc., when the service type of the service to be transmitted of the user equipment is a super-reliable low-latency service type, Random access can be performed by sending a preamble 1 through the message
  • a service type may be corresponding to a group of access preambles. Since the number of preambles is relatively large and the types of service types are relatively small, the preambles may be divided into N groups, each of which may be divided into N groups. A service type corresponds to a set of access preambles.
  • step 502 the random access preamble is transmitted through the message of the random access procedure.
  • step 503 a message 1 of the random access procedure is sent to the base station.
  • step 504 when the base station receives the message 2 returned based on the message, the message three is sent to the base station.
  • step 505 the message 4 sent by the base station is received, and the message 4 is obtained based on the message 4 of the random access procedure.
  • step 506 the cause value of the base station's denial of access is resolved from message four.
  • step 507 based on the cause value, the target base station that performs the random access request again is determined.
  • steps 505-507 can be seen in the embodiment shown in FIG. 4, and will not be described in detail herein.
  • the user equipment can indicate the type of the service to the base station through the message of the random access procedure, so that the base station can determine which devices are preferentially accessed and which are denied based on the service type of the user equipment.
  • the access of the device enables the base station to preferentially access the ultra-reliable and low-latency user equipment, thereby shortening the access delay of the user equipment.
  • FIG. 6 is a flowchart of another method for shortening an access delay according to an exemplary embodiment.
  • This embodiment uses the foregoing method provided by an embodiment of the present disclosure to indicate how a user equipment indicates its own service to a base station.
  • the type is taken as an example for exemplary explanation.
  • the method includes the following steps:
  • step 601 a message 1 of the random access procedure is sent to the base station.
  • step 602 when receiving the message 2 returned by the base station based on the message, the message 3 of the random access procedure is sent to the base station, and the message 3 carries the service type of the service to be transmitted of the user equipment.
  • the user equipment may add a new signaling element in message three and indicate its own service type by the new signaling element.
  • step 603 the message 4 of the random access procedure sent by the base station is received.
  • step 604 the cause value of the base station's denial of access is resolved from message four.
  • step 605 based on the cause value, a target base station that performs the random access request again is determined.
  • steps 603-605 can be seen in the embodiment shown in FIG. 4, and will not be described in detail herein.
  • the user equipment can indicate its own service type to the base station through the message of the random access procedure, so that the base station can determine which devices are preferentially accessed and which devices are denied based on the service type of the user equipment.
  • the base station preferentially accesses the ultra-reliable and low-latency user equipment, thereby shortening the access delay of the user equipment.
  • FIG. 7 is a block diagram of an apparatus for shortening an access delay, which is applied to a base station, and as shown in FIG. 7, the apparatus for shortening an access delay, according to an exemplary embodiment, includes:
  • the first receiving module 71 is configured to receive the message 3 of the random access procedure sent by the user equipment;
  • the first sending module 72 is configured to send a message 4 of the random access procedure to the user equipment when determining to deny the user equipment access, and the message 4 carries the reason value of the base station denying access.
  • FIG. 8 is a block diagram of another apparatus for shortening an access delay according to an exemplary embodiment. As shown in FIG. 8, on the basis of the foregoing embodiment shown in FIG. 7, in an embodiment, the message 4 also carries the neighbor base station information of the neighboring base station that the user equipment can perform random access.
  • the apparatus further includes:
  • the first determining module 73 is configured to determine a service type of the service to be transmitted of the user equipment and a network status of the base station;
  • the second determining module 74 is configured to determine whether the user equipment is allowed to access based on the service type determined by the first determining module 73 and the network status of the base station.
  • the apparatus further includes:
  • the first parsing module 75 is configured to parse the random access preamble from the message 1 of the random access procedure sent by the user equipment;
  • the third determining module 76 is configured to determine, according to the correspondence between the random access preamble and the service type, the service type of the service to be transmitted of the user equipment; or
  • the second parsing module 77 is configured to parse the service type of the service to be transmitted of the user equipment from the message 3 of the random access procedure sent by the user equipment.
  • the second determining module 74 includes:
  • the first setting sub-module 741 is configured to: if the service type is the first type, set the access priority of the user equipment to a high priority, and the first type indicates that the service to be transmitted is a super-reliable low-latency service type;
  • the second setting sub-module 742 is configured to set the access priority of the user equipment to a low priority if the service type is not the first type;
  • the access sub-module 743 is configured to preferentially allow access to a user equipment with a high priority to access the network device in the base station to meet the condition of accessing the new user equipment.
  • FIG. 9 is a block diagram of an apparatus for shortening an access delay, which is applied to a user equipment. As shown in FIG. 9, the apparatus for shortening an access delay includes:
  • the second receiving module 91 is configured to receive the message four sent by the base station
  • the third parsing module 92 is configured to parse the reason value of the base station denying access from the message 4 received by the second receiving module 91;
  • the fourth determining module 93 is configured to determine a target base station that performs the random access request again based on the cause value parsed by the third parsing module 92.
  • FIG. 10 is a block diagram of another apparatus for shortening an access delay according to an exemplary embodiment.
  • Message 4 also carries neighbor base station information of the neighboring base station that the user equipment can perform random access;
  • the fourth determining module 93 includes:
  • the first selection sub-module 931 is configured to: if it is determined that the base station is not to perform random access again based on the cause value, select one base station from the neighboring base stations identified by the neighbor base station information as the target base station;
  • the first determining submodule 932 is configured to determine the base station as the target base station if it is determined to perform random access again to the base station based on the cause value.
  • the fourth determining module 93 includes:
  • the second determining submodule 933 is configured to determine, if based on the cause value, to perform random access again to the base station, Determining the base station as the target base station;
  • the second selection sub-module 934 is configured to perform a cell selection operation and perform the cell selection operation with the best signal quality as the target base station if it is determined that the base station is not to perform random access again based on the cause value.
  • the apparatus further includes:
  • the fifth determining module 94 is configured to determine, according to the service type of the service to be transmitted, a random access preamble to be sent, and the random access preamble has a corresponding relationship with the service type;
  • the second sending module 95 is configured to send the random access preamble determined by the fifth determining module 94 through the message of the random access procedure.
  • the apparatus further includes:
  • the third sending module 96 is configured to send the service type of the service to be transmitted through the message 3 of the random access procedure.
  • FIG. 11 is a block diagram of an apparatus suitable for shortening an access delay, according to an exemplary embodiment.
  • the device 1100 can be a user device such as a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, and the like.
  • apparatus 1100 can include one or more of the following components: processing component 1102, memory 1104, power component 1106, multimedia component 1108, audio component 1112, input/output (I/O) interface 1112, sensor component 1114, And a communication component 1116.
  • Processing component 1102 typically controls the overall operation of device 1100, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations.
  • Processing component 1102 can include one or more processors 1120 to execute instructions to perform all or part of the steps described above.
  • processing component 1102 can include one or more modules to facilitate interaction between component 1102 and other components.
  • processing component 1102 can include a multimedia module to facilitate interaction between multimedia component 1108 and processing component 1102.
  • the memory 1104 is configured to store various types of data to support operation at the device 1100. Examples of such data include instructions for any application or method operating on device 1100, contact data, phone book data, messages, pictures, videos, and the like.
  • the memory 1104 can be implemented by any type of volatile or non-volatile storage device, or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read only memory (EEPROM), erasable.
  • SRAM static random access memory
  • EEPROM electrically erasable programmable read only memory
  • EPROM Programmable Read Only Memory
  • PROM Programmable Read Only Memory
  • ROM Read Only Memory
  • Magnetic Memory Flash Memory
  • Disk Disk or Optical Disk.
  • Power component 1106 provides power to various components of device 1100.
  • Power component 1106 can include electricity The source management system, one or more power sources, and other components associated with generating, managing, and distributing power for the device 1100.
  • the multimedia component 1108 includes a screen between the device 1100 and the user that provides an output interface.
  • the screen can include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen can be implemented as a touch screen to receive input signals from the user.
  • the touch panel includes one or more touch sensors to sense touches, slides, and gestures on the touch panel. The touch sensor can sense not only the boundaries of the touch or sliding action, but also the duration and pressure associated with the touch or slide operation.
  • the multimedia component 1108 includes a front camera and/or a rear camera. When the device 1100 is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera can receive external multimedia data. Each front and rear camera can be a fixed optical lens system or have focal length and optical zoom capabilities.
  • the audio component 1112 is configured to output and/or input an audio signal.
  • the audio component 1112 includes a microphone (MIC) that is configured to receive an external audio signal when the device 1100 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode.
  • the received audio signal may be further stored in memory 1104 or transmitted via communication component 1116.
  • the audio component 1112 also includes a speaker for outputting an audio signal.
  • the I/O interface 1112 provides an interface between the processing component 1102 and a peripheral interface module, which may be a keyboard, a click wheel, a button, or the like. These buttons may include, but are not limited to, a home button, a volume button, a start button, and a lock button.
  • Sensor assembly 1114 includes one or more sensors for providing a status assessment of various aspects to device 1100.
  • the sensor assembly 1114 can detect an open/closed state of the device 1100, the relative positioning of the components, such as a display and a keypad of the device 1100, and the sensor component 1114 can also detect a change in position of the device 1100 or a component of the device 1100, the user The presence or absence of contact with device 1100, device 1100 orientation or acceleration/deceleration and temperature change of device 1100.
  • Sensor assembly 1114 can include a proximity sensor configured to detect the presence of nearby objects without any physical contact.
  • Sensor assembly 1114 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications.
  • the sensor assembly 1114 can also include an acceleration sensor, a gyro sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
  • Communication component 1116 is configured to facilitate wired or wireless communication between device 1100 and other devices.
  • the device 1100 can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof.
  • communication component 1116 receives a wide range from an external broadcast management system via a broadcast channel. Broadcast signals or broadcast related information.
  • communication component 1116 also includes a near field communication (NFC) module to facilitate short range communication.
  • the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.
  • RFID radio frequency identification
  • IrDA infrared data association
  • UWB ultra-wideband
  • Bluetooth Bluetooth
  • apparatus 1100 may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable A gate array (FPGA), controller, microcontroller, microprocessor, or other electronic component implementation for performing the above methods.
  • ASICs application specific integrated circuits
  • DSPs digital signal processors
  • DSPDs digital signal processing devices
  • PLDs programmable logic devices
  • FPGA field programmable A gate array
  • controller microcontroller, microprocessor, or other electronic component implementation for performing the above methods.
  • non-transitory computer readable storage medium comprising instructions, such as a memory 1104 comprising instructions that, when executed, can configure processor 1120 of apparatus 1100 to perform the methods described above.
  • the non-transitory computer readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, and an optical data storage device.
  • the processor 1120 is configured to:
  • the target base station that performs the random access request again is determined.
  • FIG. 12 is a block diagram of an apparatus suitable for shortening an access delay, according to an exemplary embodiment.
  • Apparatus 1200 can be provided as a base station.
  • apparatus 1200 includes a processing component 1222, a wireless transmit/receive component 1224, an antenna component 1226, and a signal processing portion specific to the wireless interface.
  • the processing component 1222 can further include one or more processors.
  • One of the processing components 1222 can be configured to:
  • the message 4 of the random access procedure is sent to the user equipment, and the message 4 carries the reason value of the base station denying access.

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Abstract

本公开是关于一种用于缩短接入时延的方法、装置、用户设备及基站。方法包括：接收用户设备发送的随机接入流程的消息三；在确定拒绝所述用户设备接入时，向所述用户设备发送随机接入流程的消息四，所述消息四中携带有基站拒绝接入的原因值。本公开技术方案可以确保UE在收到竞争解决未成功的消息四时，选择一个合适的基站进行随机接入，避免重复向不能接入的基站发起随机接入所导致的接入时延长的问题。

Description

用于缩短接入时延的方法、装置、用户设备及基站 技术领域
本公开涉及通信技术领域，尤其涉及一种用于缩短接入时延的方法、装置、用户设备及基站。
背景技术
相关技术中，用户设备(User Equipment，简称为UE)在执行基于竞争的随机接入过程中，基站可通过随机接入流程的消息四MSG4进行竞争解决，如果UE接收到MSG4后发现没有竞争解决成功，则根据回退参数回退一段时间后，再次发起随机接入过程，直到UE发起随机接入的次数达到最大允许的随机接入次数，并且还不能成功接入基站时，UE才选择其他基站进行随机接入。相关技术中的基于竞争的随机接入过程可对不能成功接入的UE造成很大的接入时延。
在第五代移动通信技术(5th Generation，简称为5G)网络中提出了一种研究如何满足增强的移动宽带(Enhance Mobile Broadband，简称为eMBB)、超大连接的机器类通信(Machine Type Communication，简称为MTC)技术以及超高可靠与低时延通信(Ultra Reliable&Low Latency Communication，简称为URLLC)等三大应用场景的新的无线接入技术，而其中的URLLC应用场景对网络的时延要求非常高，因此为了使得5G网络能够满足用户设备的低时延的要求，需要提出一种新的基于竞争的随机接入方案，来解决用户设备如何快速接入基站的问题。
发明内容
为克服相关技术中存在的问题，本公开实施例提供一种用于缩短接入时延的方法、装置、用户设备及基站，用以避免用户设备重复向不能接入的基站发起随机接入请求，缩短了用户设备接入基站的时延。
根据本公开实施例的第一方面，提供一种用于缩短接入时延的方法，应用在基站上，方法包括：
接收用户设备发送的随机接入流程的消息三；
在确定拒绝所述用户设备接入时，向所述用户设备发送随机接入流程的消息四，所述消息四中携带有基站拒绝接入的原因值。
在一实施例中，消息四中还携带有所述用户设备能够进行随机接入的邻基站的邻基站信息。
在一实施例中，方法还包括：
确定所述用户设备的待传输业务的业务类型以及基站的网络状态；
基于所述业务类型以及基站的网络状态，确定是否允许所述用户设备接入。
在一实施例中，方法还包括：
从所述用户设备发送的随机接入流程的消息一中解析随机接入前导码；
基于随机接入前导码与业务类型的对应关系，确定所述用户设备的待传输业务的业务类型；或者，
从所述用户设备发送的随机接入流程的消息三中解析出所述用户设备的待传输业务的业务类型。
在一实施例中，基于所述业务类型以及基站的网络状态，确定是否允许所述用户设备接入，包括：
若所述业务类型为第一类型，则将所述用户设备的接入优先级设置为高优先级，所述第一类型指示所述待传输业务为超可靠低时延的业务类型；
若所述业务类型不为第一类型，则将所述用户设备的接入优先级设置为低优先级；
在所述基站的网络状态满足接入新的用户设备的条件，优先允许接入优先级为高优先级的用户设备接入。
根据本公开实施例的第二方面，提供一种用于缩短接入时延的方法，应用在用户设备上，方法包括：
接收基站发送的随机接入流程的消息四；
从所述消息四中解析基站拒绝接入的原因值；
基于所述原因值，确定再次进行随机接入请求的目标基站。
在一实施例中，消息四中还携带有所述用户设备能够进行随机接入的邻基站的邻基站信息；
所述基于所述原因值，确定再次进行随机接入请求的目标基站，包括：
若基于所述原因值，确定不对所述基站再次进行随机接入，则从所述邻基站信息标识的邻基站中选择一个基站作为所述目标基站；
若基于所述原因值，确定对所述基站再次进行随机接入，则将所述基站确定为所述目标基站。
在一实施例中，基于所述原因值，确定再次进行随机接入请求的目标基站，包括：
若基于所述原因值，确定对所述基站再次进行随机接入，则将所述基站确定为所述目标基站；
若基于所述原因值，确定不对所述基站再次进行随机接入，则进行小区选择操作，并将信号质量最好的可接入基站作为所述目标基站。
在一实施例中，方法还包括：
基于待传输业务的业务类型，确定待发送的随机接入前导码，所述随机接入前导码与所述业务类型存在对应关系；
通过随机接入流程的消息一发送所述随机接入前导码。
在一实施例中，方法还包括：
通过随机接入流程的消息三发送待传输业务的业务类型。
根据本公开实施例的第三方面，提供一种用于缩短接入时延的装置，应用在基站上，装置包括：
第一接收模块，被配置为接收用户设备发送的随机接入流程的消息三；
第一发送模块，被配置为第一发送模块，被配置为在确定拒绝所述用户设备接入时，向所述用户设备发送随机接入流程的消息四，所述消息四中携带有基站拒绝接入的原因值。
在一实施例中，消息四中还携带有所述用户设备能够进行随机接入的邻基站的邻基站信息。
在一实施例中，装置还包括：
第一确定模块，被配置为确定所述用户设备的待传输业务的业务类型以及基站的网络状态；
第二确定模块，被配置为基于所述第一确定模块确定的所述业务类型以及基站的网络状态，确定是否允许所述用户设备接入。
在一实施例中，装置还包括：
第一解析模块，被配置为从所述用户设备发送的随机接入流程的消息一中解析随机接入前导码；
第三确定模块，被配置为基于随机接入前导码与业务类型的对应关系，确定所述用户设备的待传输业务的业务类型；或者，
第二解析模块，被配置为从所述用户设备发送的随机接入流程的消息三中解析 出所述用户设备的待传输业务的业务类型。
在一实施例中，第二确定模块包括：
第一设置子模块，被配置为若所述业务类型为第一类型，则将所述用户设备的接入优先级设置为高优先级，所述第一类型指示所述待传输业务为超可靠低时延的业务类型；
第二设置子模块，被配置为若所述业务类型不为第一类型，则将所述用户设备的接入优先级设置为低优先级；
接入子模块，被配置为在所述基站的网络状态满足接入新的用户设备的条件，优先允许接入优先级为高优先级的用户设备接入。
根据本公开实施例的第四方面，提供一种用于缩短接入时延的装置，应用在用户设备上，装置包括：
第二接收模块，被配置为接收基站发送的随机接入流程的消息四；
第三解析模块，被配置为从所述第二接收模块接收到的所述消息四中解析基站拒绝接入的原因值；
第四确定模块，被配置为基于所述第三解析模块解析得到的所述原因值，确定再次进行随机接入请求的目标基站。
在一实施例中，消息四中还携带有所述用户设备能够进行随机接入的邻基站的邻基站信息；
所述第四确定模块包括：
第一选择子模块，被配置为若基于所述原因值，确定不对所述基站再次进行随机接入，则从所述邻基站信息标识的邻基站中选择一个基站作为所述目标基站；
第一确定子模块，被配置为若基于所述原因值，确定对所述基站再次进行随机接入，则将所述基站确定为所述目标基站。
在一实施例中，第四确定模块包括：
第二确定子模块，被配置为若基于所述原因值，确定对所述基站再次进行随机接入，则将所述基站确定为所述目标基站；
第二选择子模块，被配置为若基于所述原因值，确定不对所述基站再次进行随机接入，则进行小区选择操作，并将信号质量最好的可接入基站作为所述目标基站。
在一实施例中，装置还包括：
第五确定模块，被配置为基于待传输业务的业务类型，确定待发送的随机接入前导码，所述随机接入前导码与所述业务类型存在对应关系；
第二发送模块，被配置为通过随机接入流程的消息一发送所述第六确定模块确定的所述随机接入前导码。
在一实施例中，装置还包括：
第三发送模块，被配置为通过随机接入流程的消息三发送待传输业务的业务类型。
根据本公开实施例的第五方面，提供一种用户设备，包括：
处理器；
用于存储处理器可执行指令的存储器；
其中，所述处理器被配置为：
接收基站发送的随机接入流程的消息四；
从所述消息四中解析基站拒绝接入的原因值；
基于所述原因值，确定再次进行随机接入请求的目标基站。
根据本公开实施例的第六方面，提供一种基站，包括：
处理器；
用于存储处理器可执行指令的存储器；
其中，所述处理器被配置为：
接收用户设备发送的随机接入流程的消息三；
在确定拒绝所述用户设备接入时，向所述用户设备发送随机接入流程的消息四，所述消息四中携带有基站拒绝接入的原因值。
根据本公开实施例的第七方面，提供一种非临时计算机可读存储介质，所述存储介质上存储有计算机指令，所述指令被处理器执行时实现以下步骤：
接收基站发送的随机接入流程的消息四；
从所述消息四中解析基站拒绝接入的原因值；
基于所述原因值，确定再次进行随机接入请求的目标基站。
根据本公开实施例的第八方面，提供一种非临时计算机可读存储介质，所述存储介质上存储有计算机指令，所述指令被处理器执行时实现以下步骤：
接收用户设备发送的随机接入流程的消息三；
在确定拒绝所述用户设备接入时，向所述用户设备发送随机接入流程的消息四，所述消息四中携带有基站拒绝接入的原因值。
本公开的实施例提供的技术方案可以包括以下有益效果：
在UE进行基于竞争的随机接入时，若基站拒绝用户设备接入，则可在随机接 入流程的消息四中携带拒绝用户设备接入的原因值，如基站负载过高的原因值，由此用户设备在接收到随机接入流程的消息四时，如果基于原因值确定不能接入之前请求接入的基站，则可选择其他的基站接入。通过上述技术方案，可以确保UE在收到竞争解决未成功的MSG4时，选择一个合适的基站进行随机接入，避免重复向不能接入的基站发起随机接入所导致的接入时延长的问题。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不能限制本公开。
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此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本发明的实施例，并与说明书一起用于解释本发明的原理。
图1A是根据一示例性实施例示出的一种用于缩短接入时延的方法的流程图。
图1B是根据一示例性实施例示出的一种用于缩短接入时延的方法的场景图。
图2是根据一示例性实施例示出的另一种用于缩短接入时延的方法的流程图。
图3是根据一示例性实施例示出的另一种用于缩短接入时延的方法的流程图。
图4是根据一示例性实施例示出的一种用于缩短接入时延的方法的流程图。
图5是根据一示例性实施例示出的另一种用于缩短接入时延的方法的流程图。
图6是根据一示例性实施例示出的另一种用于缩短接入时延的方法的流程图。
图7是根据一示例性实施例示出的一种用于缩短接入时延的装置的框图。
图8是根据一示例性实施例示出的另一种用于缩短接入时延的装置的框图。
图9是根据一示例性实施例示出的一种用于缩短接入时延的装置的框图。
图10是根据一示例性实施例示出的另一种用于缩短接入时延的装置的框图。
图11是根据一示例性实施例示出的一种适用于用于缩短接入时延的装置的框图。
图12是根据一示例性实施例示出的一种适用于用于缩短接入时延的装置的框图。
具体实施方式
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例 性实施例中所描述的实施方式并不代表与本发明相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本发明的一些方面相一致的装置和方法的例子。
本公开提供的技术方案适用于移动网络，如长期演进(Long Term Evolution，简称为LTE)以及新一代网络(如5G网络)中，在移动网络中，UE可通过基于竞争的随机接入接入网络。在基于竞争的随机接入流程中，UE通过随机接入流程的消息一(MSG1)向基站发送前导码，而基站在接收到MSG1时，可向UE发送随机接入响应消息，也即随机接入流程的消息二(MSG2)，而UE在接收到MSG2后，可在基站分配的上行资源上发送随机接入流程的消息三(MSG3，对于不同的场景，MSG3消息可以为RRC连接请求消息、RRC连接重建请求消息、RRC切换完成消息等)，基站基于MSG3向UE发送随机接入流程的消息四(MSG4)，UE即可基于MSG4进行竞争判定，确定自己是否成功接入了基站。
图1A是根据一示例性实施例示出的一种用于缩短接入时延的方法的流程图，图1B是根据一示例性实施例示出的一种用于缩短接入时延的方法的场景图；该用于缩短接入时延的方法可以应用在基站上，如图1A所示，该用于缩短接入时延的方法包括以下步骤101-102：
在步骤101中，接收用户设备发送的随机接入流程的消息三。
在一实施例中，随机接入流程的消息三MSG3中可以携带用户设备的待传输业务的业务类型，由于待传输业务的业务类型通常与用户设备的设备类型之间存在关联关系，因此消息三MSG3中也可以通过携带用户设备的设备类型来指示用户设备的待传输业务的业务类型，例如，如果设备类型为车联网设备，则可确定用户设备的待传输业务的业务类型为URLLC业务类型。在一实施例中，业务类型与设备类型之间的对应关系可以由系统预先约定，由此基站在接收到用户设备发送的设备类型后即可基于业务类型与设备类型之间的对应关系确定用户设备的待传输业务的业务类型。
在一实施例中，消息三中MSG3中也可以直接携带用户设备的待传输业务的业务类型，如用户设备的待传输业务的业务类型为eMBB业务类型、URLLC业务类型、海量机器类通信(massive machine type of communication，简称为mMTC)业务类型，等等，不同的业务类型对带宽、速率、时延、可靠性等方面的要求不同。
在一实施例中，业务类型还可以为用户设备的待传输业务的具体类型，例如，待传输业务为视频业务，或者待传输业务为普通的上网服务，等等。
在步骤102中，在确定拒绝用户设备接入时，向用户设备发送随机接入流程的消息四，消息四中携带有基站拒绝接入的原因值。
在一实施例中，基站可基于自身的网络状态，以及用户设备的业务类型确定是否允许用户设备接入，例如，如果基站负载过高，则可暂时拒绝用户设备接入，或者，基站所提供服务的类型与用户设备的待传输业务的业务类型不匹配，则拒绝用户设备接入，等等，如果基站拒绝用户设备接入，则可在随机接入的消息四中携带拒绝用户设备接入的原因值。
在一示例性场景中，如图1B所示，以移动网络为LTE网络(本公开技术方案并不限定于4G网络，还可应用于5G网络等新一代网络)并且基站为演进型基站(eNB)为例进行示例性说明，在图1B所示的场景中，包括eNB10、eNB20、UE30，其中，eNB10接收到UE30发起的随机接入请求，并且在确定拒绝UE30接入时，可在随机接入流程的消息四中携带拒绝用户设备接入的原因值，UE30接收到消息四时若竞争判定为竞争失败，则可从消息四中解析出原因值，进而根据该原因值确定是继续接入eNB10，还是接入其他的能够进行随机接入的基站，如eNB20，由此可避免UE30在确定eNB10不能为自己提供服务时，仍重复向eNB10发起随机接入请求，降低了接入时延。
本实施例中，通过上述步骤101-步骤102，在UE进行基于竞争的随机接入时，若基站拒绝用户设备接入，则可在随机接入流程的消息四中携带拒绝用户设备接入的原因值，如基站负载过高的原因值，由此用户设备在接收到随机接入流程的消息四时，如果基于原因值确定不能接入之前请求接入的基站，则可选择其他的基站接入。通过上述技术方案，可以确保UE在收到竞争解决未成功的MSG4时，可以选择一个合适的基站进行随机接入，避免重复向不能接入的基站发起随机接入所导致的接入时延长的问题。
下面以具体实施例来说明本公开实施例提供的技术方案。
图2是根据一示例性实施例示出的另一种用于缩短接入时延的方法的流程图；本实施例利用本公开实施例提供的上述方法，基站在接收通过随机接入流程的消息一或者消息三之后，向用户设备发送响应消息为例进行示例性说明，如图2所示，包括如下步骤：
在步骤201中，确定用户设备的待传输业务的业务类型以及基站的网络状态。
在一实施例中，用户设备的待传输业务的业务类型可以业务类型可以通过用户设备的设备类型来指示，例如，如果用户设备的设备类型为车联网终端，则可说明该终端的待传输业务的业务类型为超可靠低时延的业务。在一实施例中，用户设备的待传输业务的业务类型可以包括eMBB业务类型、URLLC业务类型、mMTC业务类型等等，不同的业务类型对带宽、速率、时延、可靠性等方面的要求不同。
在一实施例中，用户设备可在随机接入流程的消息一中指示自己的业务类型， 为了用户设备可通过消息一指示业务类型，通信系统可以预先建立随机接入前导码与业务类型的对应关系，例如，前导码1对应超可靠低时延的业务类型，而前导码2对应eMBB业务类型，等等，当用户设备的待传输业务的业务类型为超可靠低时延的业务类型时，可通过消息一发送前导码1来进行随机接入。其中，一种业务类型可以对应一组接入前导码，而不是只对应一个接入前导码。
在一实施例中，用户设备还可在随机接入流程的消息三中指示自己的业务类型，通过在消息三中添加新的信令元素，并通过该新的信令元素即可指示自己的业务类型。
在一实施例中，由于用户设备可通过随机接入流程的消息一或者消息三指示自己的业务类型，因此基站可对应地通过解析随机接入流程的消息一或者消息三确定用户设备的业务类型。
在一实施例中，基站的网络状态可以用于衡量基站是否能够接入用户设备，基站的网络状态可以通过基站的负载、基站所支持的服务类型等来标示，例如，基站的网络状态为负载过高。
在步骤202中，基于业务类型以及基站的网络状态，确定是否允许用户设备接入，若确定拒绝用户设备接入，执行步骤203，若确定允许用户设备接入，执行步骤205。
在一实施例中，通常基站可优先考虑接入业务类型为超可靠低时延的用户设备，例如，基站可在负载较重时，如基站判定自己当前只能再允许少量的用户设备，如智能再允许三个设备接入，则可优先允许业务类型为超可靠低时延的用户设备接入，而对于业务类型不是超可靠低时延的用户设备，可确定拒绝其接入。
在一实施例中，业务类型还可以为用户设备的待传输业务的具体类型，例如，待传输业务为视频业务，或者待传输业务为普通的上网服务，等等。如果用户设备的待传输业务的业务类型为视频类业务，而基站通常提供普通的上网服务，对于视频类服务的支持度比较低，则基站可确定拒绝用户设备接入。
在步骤203中，在确定拒绝用户设备接入时，向用户设备发送随机接入流程的消息四，消息四中携带有基站拒绝接入的原因值，流程结束。
在一实施例中，可通过在随机接入流程的消息四中添加拒绝用户设备接入的原因值，得到消息四。在一实施例中，可以在消息四中添加一个信令元素，并通过该新添加的信令元素指示拒绝用户设备接入的原因值。
在一实施例中，原因值可以为负载高、业务类型不匹配等等。
在一实施例中，消息四中还可以携带用户设备能够进行随机接入的邻基站的邻 基站信息，基站可通过基站间接口获取相邻基站的基站信息，进而确定出用户设备可以进行随机接入的邻基站。在一实施例中，邻基站的邻基站信息可以为基站标识信息。
在步骤204中，向用户设备发送指示竞争解决成功的随机接入流程的消息四。
本实施例中，基站可基于用户设备的业务类型，优先允许具有超可靠低时延的业务类型的用户设备接入，并且在确定拒绝用户设备接入时，可通过随机接入流程的消息四携带拒绝的原因值，以便用户设备基于原因值确定是否继续向该基站进行随机接入，并在确定不继续向该基站进行随机接入时，重新选择一个基站进行随机接入；此外，基站可在消息四中携带用户设备可随机接入的邻基站信息，由此可帮助用户设备确定再次发起随机接入的目标基站，缩短用户设备的接入时间。
图3是根据一示例性实施例示出的另一种用于缩短接入时延的方法的流程图，本实施例利用本公开实施例提供的上述方法，以基站基于业务类型确定允许哪些基站优先接入为例进行示例性说明，如图3所示，包括如下步骤：
在步骤301中，确定用户设备的待传输业务的业务类型以及基站的网络状态，执行步骤302或者步骤303。
在一实施例中，步骤301的描述可参见图2所示实施例的步骤201的描述，这里不再详述。
在步骤302中，若业务类型为第一类型，则将用户设备的接入优先级设置为高优先级，第一类型指示待传输业务为超可靠低时延的业务类型，执行步骤304。
在步骤303中，若业务类型不为第一类型，则将用户设备的接入优先级设置为低优先级。
在一实施例中，业务类型可以分为两类，一类是第一类型，一类不是第一类型，由此可将对时延要求严格的用户设备和对时延要求不严格的用户设备分开。
在一实施例中，如果当前有多个用户设备请求接入，则可根据用户设备的业务类型为用户设备设置不同的接入优先级，例如，如果为超可靠低时延的业务类型，则可设置为高优先级，以便最大可能地允许该用户设备接入，而如果不为超可靠低时延的业务类型，则说明该用户设备对时延要求不严格，在基站当前不能接入太多用户设备时，可将该用户设备的接入优先级设置为低优先级。
在步骤304中，在基站的网络状态满足接入新的用户设备的条件，优先允许接入优先级为高优先级的用户设备接入。
在一实施例中，满足接入新的用户设备的条件可以理解为基站当前的负载还没超负载，还能允许新的用户设备接入。
本实施例中，基站可根据用户设备的业务类型是否为第一类型，为用户设备设置对应的接入优先级，由此可实现基站优先将超可靠低时延的用户设备接入，进一步降低超可靠低时延的用户设备的接入时延。
图4是根据一示例性实施例示出的一种用于缩短接入时延的方法的流程图；该用于缩短接入时延的方法可以应用在用户设备上，本实施例结合图1B进行示例性说明，如图4所示，该用于缩短接入时延的方法包括以下步骤401-403：
在步骤401中，接收基站发送的随机接入流程的消息四。
在步骤402中，从消息四中解析基站拒绝接入的原因值。
在一实施例中，用户设备接收到基站发送的随机接入流程的消息四后，可基于消息四中的进行竞争判定，确定竞争冲突是否解决，竞争判定的方法可参见相关技术中的竞争判定方法。
在一实施例中，如果判定竞争失败，则可从消息四，也即随机接入流程的消息四中解析出基站拒绝接入的原因值。
在步骤403中，基于原因值，确定再次进行随机接入请求的目标基站。
在一实施例中，如果用户设备认为基站拒绝接入的原因值对自己的影响不是很大，则可将该基站作为目标基站，在回退一段时间后重新发起随机接入，例如，原因值为不能提供超可靠低时延的业务，而用户设备所需要的只是普通的上网业务，则可认为这个原因对自己影响不是很大，可在回退一段时间后重新发起随机接入；而如果原因值为基站所提供的服务与用户设备的待传输业务的业务类型不匹配，则说明基站不能为自己提供服务，用户设备则需要重新选择一个基站作为目标基站。
在一实施例中，如果基站在消息四中携带了用户设备可以进行随机接入的邻基站的邻基站信息，则用户设备可直接对邻基站信息标识的基站发起随机接入；在一实施例中，如果基站没有在消息四中携带用户设备可以进行随机接入的邻基站的邻基站信息，则用户设备可进行小区选择操作，并将信号质量最好的可接入基站作为目标基站。
在一示例性场景中，如图1B所示，以移动网络为LTE网络(本公开技术方案并不限定于4G网络，还可应用于5G网络等新一代网络)并且基站为演进型基站(eNB)为例进行示例性说明，在图1B所示的场景中，包括eNB10、eNB20、UE30，其中，eNB10接收到UE30发起的随机接入请求，并且在确定拒绝UE30接入时，可在随机接入流程的消息四中携带拒绝用户设备接入的原因值，UE30接收到消息四时若竞争判定为竞争失败，则可从消息四中解析出原因值，进而根据该原因值确定是继续接入eNB10， 还是接入其他的能够进行随机接入的基站，如eNB20，由此可避免UE30在确定eNB10不能为自己提供服务时，仍重复向eNB10发起随机接入请求，降低了接入时延。
本实施例中，通过上述步骤401-403，用户设备在接收到基站发送的通过随机接入流程的消息四后，如果竞争判定为竞争失败，则可通过解析消息四得到的基站拒绝接入的原因值，确定下一次发起随机接入的目标基站，避免了相关技术的基于竞争的随机接入过程可对不能成功接入的UE造成很大的接入时延的问题，可以缩短用户设备的接入时延。
下面以具体实施例来说明本公开实施例提供的技术方案。
图5是根据一示例性实施例示出的另一种用于缩短接入时延的方法的流程图；本实施例利用本公开实施例提供的上述方法，以用户设备如何向基站指示自己的业务类型为例进行示例性说明，如图5所示，包括如下步骤：
在步骤501中，基于待传输业务的业务类型，确定待发送的随机接入前导码，随机接入前导码与业务类型存在对应关系。
在一实施例中，用户设备可在随机接入流程的消息一中指示自己的业务类型，为了用户设备可通过消息一指示业务类型，通信系统可以预先建立随机接入前导码与业务类型的对应关系，例如，前导码1对应超可靠低时延的业务类型，而前导码2对应eMBB业务类型，等等，当用户设备的待传输业务的业务类型为超可靠低时延的业务类型时，可通过消息一发送前导码1来进行随机接入
在一实施例中，一种业务类型可以对应一组接入前导码，由于前导码的个数比较多，而业务类型的种类相对比较少，因此可将前导码分为N个组，每一种业务类型对应一组接入前导码。
在步骤502中，通过随机接入流程的消息一发送随机接入前导码。
在步骤503中，向基站发送随机接入流程的消息一。
在步骤504中，在接收到基站基于消息一返回的消息二时，向基站发送消息三。
在步骤505中，接收基站发送的消息四，消息四基于随机接入流程的消息四得到。
在步骤506中，从消息四中解析基站拒绝接入的原因值。
在步骤507中，基于原因值，确定再次进行随机接入请求的目标基站。
在一实施例中，步骤505-507的描述可参见图4所示实施例，这里不再详述。
本实施例中，用户设备可通过随机接入流程的消息一向基站指示自己的业务类型，由此可实现基站基于用户设备的业务类型，确定优先接入哪些设备以及拒绝哪些 设备接入，实现基站优先接入超可靠低时延的用户设备，进而缩短用户设备的接入时延。
图6是根据一示例性实施例示出的另一种用于缩短接入时延的方法的流程图；本实施例利用本公开实施例提供的上述方法，以用户设备如何向基站指示自己的业务类型为例进行示例性说明为例进行示例性说明，如图6所示，包括如下步骤：
在步骤601中，向基站发送随机接入流程的消息一。
在步骤602中，在接收到基站基于消息一返回的消息二时，向基站发送随机接入流程的消息三，消息三中携带有用户设备的待传输业务的业务类型。
在一实施例中，用户设备可在消息三中添加新的信令元素，并通过该新的信令元素即可指示自己的业务类型。
在步骤603中，接收基站发送的随机接入流程的消息四。
在步骤604中，从消息四中解析基站拒绝接入的原因值。
在步骤605中，基于原因值，确定再次进行随机接入请求的目标基站。
在一实施例中，步骤603-605的描述可参见图4所示实施例，这里不再详述。
本实施例中，用户设备可通过随机接入流程的消息三向基站指示自己的业务类型，由此可实现基站基于用户设备的业务类型，确定优先接入哪些设备以及拒绝哪些设备接入，实现基站优先接入超可靠低时延的用户设备，进而缩短用户设备的接入时延。
图7是根据一示例性实施例示出的一种用于缩短接入时延的装置的框图，应用在基站上，如图7所示，用于缩短接入时延的装置包括：
第一接收模块71，被配置为接收用户设备发送的随机接入流程的消息三；
第一发送模块72，被配置为在确定拒绝用户设备接入时，向用户设备发送随机接入流程的消息四，消息四中携带有基站拒绝接入的原因值。
图8是根据一示例性实施例示出的另一种用于缩短接入时延的装置的框图，如图8所示，在上述图7所示实施例的基础上，在一实施例中，消息四中还携带有用户设备能够进行随机接入的邻基站的邻基站信息。
在一实施例中，装置还包括：
第一确定模块73，被配置为确定用户设备的待传输业务的业务类型以及基站的网络状态；
第二确定模块74，被配置为基于第一确定模块73确定的业务类型以及基站的网络状态，确定是否允许用户设备接入。
在一实施例中，装置还包括：
第一解析模块75，被配置为从用户设备发送的随机接入流程的消息一中解析随机接入前导码；
第三确定模块76，被配置为基于随机接入前导码与业务类型的对应关系，确定用户设备的待传输业务的业务类型；或者，
第二解析模块77，被配置为从用户设备发送的随机接入流程的消息三中解析出用户设备的待传输业务的业务类型。
在一实施例中，第二确定模块74包括：
第一设置子模块741，被配置为若业务类型为第一类型，则将用户设备的接入优先级设置为高优先级，第一类型指示待传输业务为超可靠低时延的业务类型；
第二设置子模块742，被配置为若业务类型不为第一类型，则将用户设备的接入优先级设置为低优先级；
接入子模块743，被配置为在基站的网络状态满足接入新的用户设备的条件，优先允许接入优先级为高优先级的用户设备接入。
图9是根据一示例性实施例示出的一种用于缩短接入时延的装置的框图，应用在用户设备上，如图9所示，用于缩短接入时延的装置包括：
第二接收模块91，被配置为接收基站发送的消息四；
第三解析模块92，被配置为从第二接收模块91接收到的消息四中解析基站拒绝接入的原因值；
第四确定模块93，被配置为基于第三解析模块92解析得到的原因值，确定再次进行随机接入请求的目标基站。
图10是根据一示例性实施例示出的另一种用于缩短接入时延的装置的框图，如图10所示，在上述图9所示实施例的基础上，在一实施例中，消息四中还携带有用户设备能够进行随机接入的邻基站的邻基站信息；
第四确定模块93包括：
第一选择子模块931，被配置为若基于原因值，确定不对基站再次进行随机接入，则从邻基站信息标识的邻基站中选择一个基站作为目标基站；
第一确定子模块932，被配置为若基于原因值，确定对基站再次进行随机接入，则将基站确定为目标基站。
在一实施例中，第四确定模块93包括：
第二确定子模块933，被配置为若基于原因值，确定对基站再次进行随机接入， 则将基站确定为目标基站；
第二选择子模块934，被配置为若基于原因值，确定不对基站再次进行随机接入，则进行小区选择操作，并将信号质量最好的可接入基站作为目标基站。
在一实施例中，装置还包括：
第五确定模块94，被配置为基于待传输业务的业务类型，确定待发送的随机接入前导码，随机接入前导码与业务类型存在对应关系；
第二发送模块95，被配置为通过随机接入流程的消息一发送第五确定模块94确定的随机接入前导码。
在一实施例中，装置还包括：
第三发送模块96，被配置为通过随机接入流程的消息三发送待传输业务的业务类型。
关于上述实施例中的装置，其中各个模块执行操作的具体方式已经在有关该方法的实施例中进行了详细描述，此处将不做详细阐述说明。
图11是根据一示例性实施例示出的一种适用于用于缩短接入时延的装置的框图。例如，装置1100可以是移动电话，计算机，数字广播终端，消息收发设备，游戏控制台，平板设备，医疗设备，健身设备，个人数字助理等用户设备。
参照图11，装置1100可以包括以下一个或多个组件：处理组件1102，存储器1104，电源组件1106，多媒体组件1108，音频组件1112，输入/输出(I/O)的接口1112，传感器组件1114，以及通信组件1116。
处理组件1102通常控制装置1100的整体操作，诸如与显示，电话呼叫，数据通信，相机操作和记录操作相关联的操作。处理元件1102可以包括一个或多个处理器1120来执行指令，以完成上述的方法的全部或部分步骤。此外，处理组件1102可以包括一个或多个模块，便于处理组件1102和其他组件之间的交互。例如，处理部件1102可以包括多媒体模块，以方便多媒体组件1108和处理组件1102之间的交互。
存储器1104被配置为存储各种类型的数据以支持在设备1100的操作。这些数据的示例包括用于在装置1100上操作的任何应用程序或方法的指令，联系人数据，电话簿数据，消息，图片，视频等。存储器1104可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，如静态随机存取存储器(SRAM)，电可擦除可编程只读存储器(EEPROM)，可擦除可编程只读存储器(EPROM)，可编程只读存储器(PROM)，只读存储器(ROM)，磁存储器，快闪存储器，磁盘或光盘。
电力组件1106为装置1100的各种组件提供电力。电力组件1106可以包括电 源管理系统，一个或多个电源，及其他与为装置1100生成、管理和分配电力相关联的组件。
多媒体组件1108包括在装置1100和用户之间的提供一个输出接口的屏幕。在一些实施例中，屏幕可以包括液晶显示器(LCD)和触摸面板(TP)。如果屏幕包括触摸面板，屏幕可以被实现为触摸屏，以接收来自用户的输入信号。触摸面板包括一个或多个触摸传感器以感测触摸、滑动和触摸面板上的手势。触摸传感器可以不仅感测触摸或滑动动作的边界，而且还检测与触摸或滑动操作相关的持续时间和压力。在一些实施例中，多媒体组件1108包括一个前置摄像头和/或后置摄像头。当设备1100处于操作模式，如拍摄模式或视频模式时，前置摄像头和/或后置摄像头可以接收外部的多媒体数据。每个前置摄像头和后置摄像头可以是一个固定的光学透镜系统或具有焦距和光学变焦能力。
音频组件1112被配置为输出和/或输入音频信号。例如，音频组件1112包括一个麦克风(MIC)，当装置1100处于操作模式，如呼叫模式、记录模式和语音识别模式时，麦克风被配置为接收外部音频信号。所接收的音频信号可以被进一步存储在存储器1104或经由通信组件1116发送。在一些实施例中，音频组件1112还包括一个扬声器，用于输出音频信号。
I/O接口1112为处理组件1102和外围接口模块之间提供接口，上述外围接口模块可以是键盘，点击轮，按钮等。这些按钮可包括但不限于：主页按钮、音量按钮、启动按钮和锁定按钮。
传感器组件1114包括一个或多个传感器，用于为装置1100提供各个方面的状态评估。例如，传感器组件1114可以检测到设备1100的打开/关闭状态，组件的相对定位，例如组件为装置1100的显示器和小键盘，传感器组件1114还可以检测装置1100或装置1100一个组件的位置改变，用户与装置1100接触的存在或不存在，装置1100方位或加速/减速和装置1100的温度变化。传感器组件1114可以包括接近传感器，被配置用来在没有任何的物理接触时检测附近物体的存在。传感器组件1114还可以包括光传感器，如CMOS或CCD图像传感器，用于在成像应用中使用。在一些实施例中，该传感器组件1114还可以包括加速度传感器，陀螺仪传感器，磁传感器，压力传感器或温度传感器。
通信组件1116被配置为便于装置1100和其他设备之间有线或无线方式的通信。装置1100可以接入基于通信标准的无线网络，如WiFi，2G或3G，或它们的组合。在一个示例性实施例中，通信部件1116经由广播信道接收来自外部广播管理系统的广 播信号或广播相关信息。在一个示例性实施例中，通信部件1116还包括近场通信(NFC)模块，以促进短程通信。例如，在NFC模块可基于射频识别(RFID)技术，红外数据协会(IrDA)技术，超宽带(UWB)技术，蓝牙(BT)技术和其他技术来实现。
在示例性实施例中，装置1100可以被一个或多个应用专用集成电路(ASIC)、数字信号处理器(DSP)、数字信号处理设备(DSPD)、可编程逻辑器件(PLD)、现场可编程门阵列(FPGA)、控制器、微控制器、微处理器或其他电子元件实现，用于执行上述方法。
在示例性实施例中，还提供了一种包括指令的非临时性计算机可读存储介质，例如包括指令的存储器1104，上述指令在被执行时可配置装置1100的处理器1120以执行上述方法。例如，非临时性计算机可读存储介质可以是ROM、随机存取存储器(RAM)、CD-ROM、磁带、软盘和光数据存储设备等。
其中，处理器1120被配置为：
接收基站发送的消息四；
从消息四中解析基站拒绝接入的原因值；
基于原因值，确定再次进行随机接入请求的目标基站。
图12是根据一示例性实施例示出的一种适用于用于缩短接入时延的装置的框图。装置1200可以被提供为一基站。参照图12，装置1200包括处理组件1222、无线发射/接收组件1224、天线组件1226、以及无线接口特有的信号处理部分，处理组件1222可进一步包括一个或多个处理器。
处理组件1222中的其中一个处理器可以被配置为：
接收用户设备发送的随机接入流程的消息三；
在确定拒绝用户设备接入时，向用户设备发送随机接入流程的消息四，消息四中携带有基站拒绝接入的原因值。
本领域技术人员在考虑说明书及实践这里公开的公开后，将容易想到本公开的其它实施方案。本请求旨在涵盖本公开的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本公开的一般性原理并包括本公开未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的，本公开的真正范围和精神由下面的权利要求指出。
应当理解的是，本公开并不局限于上面已经描述并在附图中示出的精确结构，并且可以在不脱离其范围进行各种修改和改变。本公开的范围仅由所附的权利要求来 限制。

Claims (24)

  1. 一种用于缩短接入时延的方法，应用在基站上，其特征在于，所述方法包括：
    接收用户设备发送的随机接入流程的消息三；
    在确定拒绝所述用户设备接入时，向所述用户设备发送随机接入流程的消息四，所述消息四中携带有基站拒绝接入的原因值。
  2. 根据权利要求1所述的方法，其特征在于，所述消息四中还携带有所述用户设备能够进行随机接入的邻基站的邻基站信息。
  3. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    确定所述用户设备的待传输业务的业务类型以及基站的网络状态；
    基于所述业务类型以及基站的网络状态，确定是否允许所述用户设备接入。
  4. 根据权利要求3所述的方法，其特征在于，所述方法还包括：
    从所述用户设备发送的随机接入流程的消息一中解析随机接入前导码；
    基于随机接入前导码与业务类型的对应关系，确定所述用户设备的待传输业务的业务类型；或者，
    从所述用户设备发送的随机接入流程的消息三中解析出所述用户设备的待传输业务的业务类型。
  5. 根据权利要求3所述的方法，其特征在于，所述基于所述业务类型以及基站的网络状态，确定是否允许所述用户设备接入，包括：
    若所述业务类型为第一类型，则将所述用户设备的接入优先级设置为高优先级，所述第一类型指示所述待传输业务为超可靠低时延的业务类型；
    若所述业务类型不为第一类型，则将所述用户设备的接入优先级设置为低优先级；
    在所述基站的网络状态满足接入新的用户设备的条件，优先允许接入优先级为高优先级的用户设备接入。
  6. 一种用于缩短接入时延的方法，应用在用户设备上，其特征在于，所述方法包括：
    接收基站发送的随机接入流程的消息四；
    从所述消息四中解析基站拒绝接入的原因值；
    基于所述原因值，确定再次进行随机接入请求的目标基站。
  7. 根据权利要求6所述的方法，其特征在于，所述消息四中还携带有所述用户设备能够进行随机接入的邻基站的邻基站信息；
    所述基于所述原因值，确定再次进行随机接入请求的目标基站，包括：
    若基于所述原因值，确定不对所述基站再次进行随机接入，则从所述邻基站信息标识的邻基站中选择一个基站作为所述目标基站；
    若基于所述原因值，确定对所述基站再次进行随机接入，则将所述基站确定为所述目标基站。
  8. 根据权利要求6所述的方法，其特征在于，所述基于所述原因值，确定再次进行随机接入请求的目标基站，包括：
    若基于所述原因值，确定对所述基站再次进行随机接入，则将所述基站确定为所述目标基站；
    若基于所述原因值，确定不对所述基站再次进行随机接入，则进行小区选择操作，并将信号质量最好的可接入基站作为所述目标基站。
  9. 根据权利要求6所述的方法，其特征在于，所述方法还包括：
    基于待传输业务的业务类型，确定待发送的随机接入前导码，所述随机接入前导码与所述业务类型存在对应关系；
    通过随机接入流程的消息一发送所述随机接入前导码。
  10. 根据权利要求6所述的方法，其特征在于，所述方法还包括：
    通过随机接入流程的消息三发送待传输业务的业务类型。
  11. 一种用于缩短接入时延的装置，应用在基站上，其特征在于，所述装置包括：
    第一接收模块，被配置为接收用户设备发送的随机接入流程的消息三；
    第一发送模块，被配置为在确定拒绝所述用户设备接入时，向所述用户设备发送随机接入流程的消息四，所述消息四中携带有基站拒绝接入的原因值。
  12. 根据权利要求11所述的装置，其特征在于，所述消息四中还携带有所述用户设备能够进行随机接入的邻基站的邻基站信息。
  13. 根据权利要求11所述的装置，其特征在于，所述装置还包括：
    第一确定模块，被配置为确定所述用户设备的待传输业务的业务类型以及基站的网络状态；
    第二确定模块，被配置为基于所述第一确定模块确定的所述业务类型以及基站的网络状态，确定是否允许所述用户设备接入。
  14. 根据权利要求13所述的装置，其特征在于，所述装置还包括：
    第一解析模块，被配置为从所述用户设备发送的随机接入流程的消息一中解析随机接入前导码；
    第三确定模块，被配置为基于随机接入前导码与业务类型的对应关系，确定所述 用户设备的待传输业务的业务类型；或者，
    第二解析模块，被配置为从所述用户设备发送的随机接入流程的消息三中解析出所述用户设备的待传输业务的业务类型。
  15. 根据权利要求13所述的装置，其特征在于，所述第二确定模块包括：
    第一设置子模块，被配置为若所述业务类型为第一类型，则将所述用户设备的接入优先级设置为高优先级，所述第一类型指示所述待传输业务为超可靠低时延的业务类型；
    第二设置子模块，被配置为若所述业务类型不为第一类型，则将所述用户设备的接入优先级设置为低优先级；
    接入子模块，被配置为在所述基站的网络状态满足接入新的用户设备的条件，优先允许接入优先级为高优先级的用户设备接入。
  16. 一种用于缩短接入时延的装置，应用在用户设备上，其特征在于，所述装置包括：
    第二接收模块，被配置为接收基站发送的随机接入流程的消息四；
    第三解析模块，被配置为从所述第二接收模块接收到的所述消息四中解析基站拒绝接入的原因值；
    第四确定模块，被配置为基于所述第三解析模块解析得到的所述原因值，确定再次进行随机接入请求的目标基站。
  17. 根据权利要求16所述的装置，其特征在于，所述消息四中还携带有所述用户设备能够进行随机接入的邻基站的邻基站信息；
    所述第四确定模块包括：
    第一选择子模块，被配置为若基于所述原因值，确定不对所述基站再次进行随机接入，则从所述邻基站信息标识的邻基站中选择一个基站作为所述目标基站；
    第一确定子模块，被配置为若基于所述原因值，确定对所述基站再次进行随机接入，则将所述基站确定为所述目标基站。
  18. 根据权利要求16所述的装置，其特征在于，所述第四确定模块包括：
    第二确定子模块，被配置为若基于所述原因值，确定对所述基站再次进行随机接入，则将所述基站确定为所述目标基站；
    第二选择子模块，被配置为若基于所述原因值，确定不对所述基站再次进行随机接入，则进行小区选择操作，并将信号质量最好的可接入基站作为所述目标基站。
  19. 根据权利要求16所述的装置，其特征在于，所述装置还包括：
    第五确定模块，被配置为基于待传输业务的业务类型，确定待发送的随机接入前导码，所述随机接入前导码与所述业务类型存在对应关系；
    第二发送模块，被配置为通过随机接入流程的消息一发送所述第六确定模块确定的所述随机接入前导码。
  20. 根据权利要求16所述的装置，其特征在于，所述装置还包括：
    第三发送模块，被配置为通过随机接入流程的消息三发送待传输业务的业务类型。
  21. 一种用户设备，其特征在于，包括：
    处理器；
    用于存储处理器可执行指令的存储器；
    其中，所述处理器被配置为：
    接收基站发送的随机接入流程的消息四；
    从所述消息四中解析基站拒绝接入的原因值；
    基于所述原因值，确定再次进行随机接入请求的目标基站。
  22. 一种基站，其特征在于，包括：
    处理器；
    用于存储处理器可执行指令的存储器；
    其中，所述处理器被配置为：
    接收用户设备发送的随机接入流程的消息三；
    在确定拒绝所述用户设备接入时，向所述用户设备发送随机接入流程的消息四，所述消息四中携带有基站拒绝接入的原因值。
  23. 一种非临时计算机可读存储介质，所述存储介质上存储有计算机指令，其特征在于，所述指令被处理器执行时实现以下步骤：
    接收基站发送的随机接入流程的消息四；
    从所述消息四中解析基站拒绝接入的原因值；
    基于所述原因值，确定再次进行随机接入请求的目标基站。
  24. 一种非临时计算机可读存储介质，所述存储介质上存储有计算机指令，其特征在于，所述指令被处理器执行时实现以下步骤：
    接收用户设备发送的随机接入流程的消息三；
    在确定拒绝所述用户设备接入时，向所述用户设备发送随机接入流程的消息四，所述消息四中携带有基站拒绝接入的原因值。
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