WO2019024659A1 - 一种无线连接方法及装置 - Google Patents

一种无线连接方法及装置 Download PDF

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Publication number
WO2019024659A1
WO2019024659A1 PCT/CN2018/094913 CN2018094913W WO2019024659A1 WO 2019024659 A1 WO2019024659 A1 WO 2019024659A1 CN 2018094913 W CN2018094913 W CN 2018094913W WO 2019024659 A1 WO2019024659 A1 WO 2019024659A1
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Prior art keywords
terminal
message
network node
access network
information
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PCT/CN2018/094913
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English (en)
French (fr)
Inventor
李濛
应江威
权威
杨艳梅
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华为技术有限公司
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Publication of WO2019024659A1 publication Critical patent/WO2019024659A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup

Definitions

  • the present application relates to the field of information technology, and in particular, to a wireless connection method and apparatus.
  • the terminal when the terminal in the idle state needs to send uplink signaling or data, or when the core network sends downlink signaling or data to the terminal
  • the terminal needs to establish a connection with an access network device (for example, a base station) through a random access procedure.
  • an access network device for example, a base station
  • the terminal After receiving the radio resource control (RRC) connection setup message sent by the access network device, the terminal sends the connection to the access network device.
  • RRC radio resource control
  • the RRC connection setup complete message of the service request message completes the connection with the access network device.
  • the access network device After receiving the RRC connection setup complete message, the access network device transparently transmits the service request message to the core network device (for example, a mobility management entity (MME)), which is used to trigger the core network device to establish a context for the terminal. information.
  • MME mobility management entity
  • the core network device establishes the context information for the terminal, the context information is sent to the access network device, and the access network device allocates the radio resource to the terminal according to the received context information, for example, the radio resource may be the terminal and the access network device.
  • SRB Signaling radio bearer
  • DRB data radio bearer
  • the terminal completes the transition from the idle state to the connected state, and needs to perform a random access procedure, a context information establishment of the terminal, and a radio resource allocation of the terminal through the terminal, which are time consuming and cause the terminal to wait.
  • the connection is established for too long, reducing system efficiency.
  • the present application provides a wireless connection method and apparatus for solving the problem that the transition time of the terminal from the idle state to the connected state is too long in the prior art.
  • an embodiment of the present application provides a wireless connection method, where the method includes:
  • the terminal sends a second message, where the second message includes information of a radio resource allocated to the terminal.
  • the access network node may skip (or not perform) the step of requesting the core network node to establish the terminal context information, and directly send the second message to the terminal, thereby reducing the During the establishment of the wireless connection, the number of signaling sent by the access network node reduces the conversion time of the terminal from the idle state to the connected state.
  • the method before the access network node receives the first message from the terminal, the method further includes:
  • the access network node receives context information of the terminal from a core network node.
  • the access network node acquires the context information of the terminal before receiving the first message, reduces the conversion time of the terminal from the idle state to the connected state, and improves system efficiency.
  • the method further includes:
  • the access network node receives the first indication information from the core network node, where the first indication information is used to indicate that the access network node does not need to immediately establish a wireless manner for the terminal after receiving the context information of the terminal. connection.
  • the access network node when the terminal is in the idle state, only the core network node stores the context information of the terminal, and other nodes will clear the context information of the terminal. Therefore, after receiving the context information of the terminal, the access network node immediately becomes the terminal. Establish a wireless connection.
  • the access network node after receiving the context information of the terminal, the access network node only stores the context information of the terminal, and does not perform signaling interaction with the terminal, but when the terminal initiates an RRC connection or paging terminal, the access network The node performs signaling interaction with the terminal to establish a wireless connection for the terminal, thereby reducing the transition time of the terminal from the idle state to the connected state.
  • the first message includes a temporary mobile identifier of the terminal
  • the method further includes:
  • the access network node obtains context information of the terminal according to the temporary mobility identifier of the terminal, and allocates the radio resource to the terminal according to the context information of the terminal.
  • the access network node can obtain the context information of the terminal accurately and efficiently according to the temporary mobile identifier of the terminal, reduce the transition time of the terminal from the idle state to the connected state, and improve the efficiency of establishing a wireless connection for the terminal.
  • the second message further includes second indication information, where the second indication information is used to indicate that the access network node saves context information of the terminal.
  • the access network node may indicate to the terminal, by using the second indication information, that the terminal has saved or stored or established or maintained or acquired the context information of the terminal, and the terminal may no longer trigger the core through the access network node.
  • the network node establishes the context information for the terminal, thereby saving the number of signaling sent by the terminal during the establishment of the wireless connection, and reducing the conversion time of the terminal from the idle state to the connected state.
  • the first message includes a reason for establishing a wireless connection
  • the method further includes:
  • the access network node When the establishment cause of the wireless connection is mobile source data, the access network node sends the second message to the terminal.
  • the reason for establishing the wireless connection is the mobile source data, it indicates that the terminal needs to send or receive data to perform a service request, and therefore, when the access network node stores the context information of the terminal, the access network node The second message is sent directly to the terminal without interacting with the core network node, which reduces the conversion time of the terminal from the idle state to the connected state.
  • the method before the access network node receives the first message from the terminal, the method further includes:
  • the access network node When the access network node receives the downlink data of the terminal from the core network node, the access network node sends a first paging message to the terminal; or, when the access network node When the core network node receives the second paging message, the access network node sends a first paging message to the terminal, where the second paging message is used to instruct the access network node to page the terminal
  • the first paging message includes second indication information, where the second indication information is used to indicate that the access network node saves context information of the terminal.
  • an embodiment of the present application provides an access network node, where the access network node includes a memory, a transceiver, and a processor, where: the memory is used to store an instruction; the processor is configured to execute an instruction stored in the memory, and The transceiver is controlled to receive and signal, and when the processor executes the instructions stored in the memory, the access network node is configured to perform the method of any of the above aspects or the first aspect of the first aspect.
  • the embodiment of the present application provides an access network node, which is used to implement any one of the foregoing first aspect or the first aspect, including a corresponding functional module, for example, including a processing unit, a receiving unit, and a sending unit. Etc., respectively, are used to implement the steps in the above method.
  • an embodiment of the present application provides a computer readable storage medium, where the computer storage medium stores computer readable instructions, and when the computer reads and executes the computer readable instructions, causes the computer to execute the first Aspect or method of any of the possible aspects of the first aspect.
  • the embodiment of the present application provides a computer program product, when the computer reads and executes the computer program product, causing the computer to perform the method in any one of the foregoing first aspect or the first aspect.
  • an embodiment of the present application provides a chip, where the chip is connected to a memory, for reading and executing a software program stored in the memory, to implement any of the foregoing first aspect or the first aspect.
  • the method in the design is not limited to:
  • the embodiment of the present application provides a wireless connection method, where the method includes:
  • the terminal sends a first message to the access network node, where the first message is used to request to establish a wireless connection with the access network node; the terminal receives a second message from the access network node, the second The message is sent by the access network node according to the first message, and the second message includes information about a radio resource allocated to the terminal.
  • the terminal can obtain the information of the radio resource allocated by the access network node to the terminal more quickly, thereby reducing the terminal from the terminal.
  • the first message is a radio resource control RRC connection request message
  • the second message is an RRC connection recovery message
  • the method further includes:
  • the terminal sends a third message to the access network node according to the second message, where the third message is an RRC connection recovery complete message.
  • the method before the sending, by the terminal, the third message to the access network node, the method further includes:
  • the terminal Receiving, by the terminal, the first paging message sent by the access network node, where the first paging message includes second indication information, where the second indication information is used to indicate that the access network node saves Context information of the terminal.
  • the terminal may directly determine, according to the second indication information in the first paging message, context information that has been saved or stored or established or maintained or acquired in the access network node, so that the RRC may be sent to the access network node.
  • Connection reconfiguration complete message
  • the second message further includes second indication information, where the second indication information is used to indicate that the access network node saves context information of the terminal.
  • the terminal may determine, according to the second indication information in the second message, the context information of the terminal that has been saved or stored or established or maintained or acquired in the access network node, and the terminal may not be triggered by the access network node.
  • the core network node establishes the context information for the terminal, thereby saving the number of signaling sent by the terminal during the establishment of the wireless connection, and reducing the transition time of the terminal from the idle state to the connected state.
  • an embodiment of the present application provides an access network node, where the access network node includes a memory, a transceiver, and a processor, where: the memory is used to store an instruction; the processor is configured to execute an instruction stored in the memory, and The control transceiver performs signal reception and signal transmission, and when the processor executes the instruction stored in the memory, the terminal is configured to perform the method in any one of the seventh aspect or the seventh aspect.
  • the ninth aspect provides an access network node, which is used to implement any one of the foregoing seventh or seventh aspects, including a corresponding functional module, for example, including a processing unit, a receiving unit, and a sending unit. Etc., respectively, are used to implement the steps in the above method.
  • the embodiment of the present application provides a computer readable storage medium, where the computer readable medium stores computer readable instructions, and when the computer reads and executes the computer readable instructions, causes the computer to execute the seventh Aspect or method of any of the possible aspects of the seventh aspect.
  • the embodiment of the present application provides a computer program product, when the computer reads and executes the computer program product, causing the computer to perform the method in any one of the seventh aspect or the seventh aspect. .
  • the embodiment of the present application provides a chip, where the chip is connected to a memory, and is configured to read and execute a software program stored in the memory, to implement any one of the seventh aspect or the seventh aspect. Possible methods in design.
  • FIG. 1 is a schematic diagram of a system architecture applicable to an embodiment of the present application
  • FIG. 2 is a schematic flowchart of a wireless connection method according to an embodiment of the present application.
  • FIG. 3 is a schematic diagram of another wireless connection process according to an embodiment of the present application.
  • FIG. 4 is a schematic diagram of another wireless connection process according to an embodiment of the present application.
  • FIG. 5 is a schematic diagram of another wireless connection process according to an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of an access network node according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a terminal according to an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a device according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of another apparatus according to an embodiment of the present application.
  • FIG. 1 exemplarily shows a system architecture diagram suitable for the embodiment of the present application.
  • the terminal 101 can communicate with the core network via the access network entity 102. It can be referred to as User Equipment (UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device.
  • UE User Equipment
  • the access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), with wireless communication.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • FIG. 1 Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminals in future 5G networks, and the like.
  • FIG. 1 for convenience of description, only one terminal is illustrated. In an actual network, multiple terminals may coexist, and details are not described herein again.
  • An access network (AN) entity 102 which may also be referred to as a radio access network (RAN) entity, is hereinafter referred to as an access network entity or an AN entity, and is mainly responsible for the terminal 101.
  • a wireless connection is provided to ensure reliable transmission of uplink and downlink data of the terminal 101.
  • the access network entity 102 can be a gNB (generation Node B) in a 5G system, and can be a Global System of Mobile communication (GSM) system or a base station in Code Division Multiple Access (CDMA).
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • BTS Base Transceiver Station
  • NodeB, NB base station
  • WCDMA Wideband Code Division Multiple Access
  • LTE Long Term Evolution
  • a type of base station (Evolutional Node B, eNB or eNodeB).
  • a Session Management Function (SMF) entity 103 which may be used to perform part of the functions of the Mobility Management Entity (MME) in the LTE system, and is mainly responsible for establishing a session, managing a session, and the like for the terminal 101.
  • MME Mobility Management Entity
  • UPF User Plane Function
  • the user plane function entity 104 is a function network element of the user plane of the terminal 101.
  • the main functions include packet routing and forwarding, and quality of service (QoS) processing of user plane data.
  • QoS quality of service
  • Access and Mobility Management Function (AMF) entity 105 the main functions include the endpoint of the radio access network control plane, the endpoint of non-access signaling, mobility management, lawful interception, access authorization Or authentication and so on.
  • AMF Access and Mobility Management Function
  • the Policy Control Funnel (PCF) entity 106 is mainly responsible for the establishment, release, and modification of the user plane transmission path.
  • AUSF Authentication Server Function
  • a User Data Management (UDM) entity 108 is mainly responsible for managing subscription data of users and the like.
  • the Data Network (DN) 109 may refer to a network that provides services for the terminal 101.
  • some DNs may provide the Internet access function for the terminal 101, and some DNs may provide the MMS function for the terminal 101.
  • FIG. 1 Also shown in FIG. 1 are possible implementations of interfaces in various entities, such as the N2 interface between the access network entity 102 and the AMF entity 109, the N9 interface between the access network entity 102 and the UPF entity 104, and the like, I will not repeat them here.
  • FIG. 2 it is a schematic flowchart of a wireless connection method provided by an embodiment of the present application. Referring to Figure 2, the method includes:
  • Step 201 The terminal sends a first message to the access network node.
  • the first message is used to request to establish a wireless connection with the access network node.
  • the access network node may refer to an access network entity, and the specific content of the access network entity may be referred to the related description.
  • Step 202 The access network node receives the first message from the terminal.
  • Step 203 The access network node sends a second message to the terminal according to the first message.
  • the second message includes information of a radio resource allocated to the terminal.
  • Step 204 The terminal receives the second message from the access network node.
  • the method further includes: the core network node establishes context information for the terminal in the idle state according to the historical access information of the terminal.
  • the time point at which the core network node establishes context information for the terminal is different from the prior art.
  • the core network node receives the service request message of the terminal, and then the context information is established for the terminal.
  • the core network node converts the terminal to the connected state according to the historical access information of the terminal. The behavior is predicted and the context information is established for the terminal in predicting when the terminal transitions to the connected state.
  • the historical access information of the terminal may include, but is not limited to, a time point at which the terminal accesses the network, a duration of the terminal accessing the network, a location information of the terminal accessing the network, a mobile range when the terminal accesses the network, and a terminal Movement speed, direction of movement of the terminal, etc.
  • the core network node may be an MME or an AMF entity or an SMF entity.
  • MME Mobility Management Entity
  • AMF Access Management Function
  • SMF Session Management Function
  • establishing context information for the terminal in the idle state may include the following steps:
  • Step 1 predicting the position of the terminal when transitioning from the idle state to the connected state.
  • the core network node for example, the MME or the AMF entity
  • the core network node responsible for mobility management determines according to a message such as a UE context release message sent by the access network node.
  • the terminal is already in an idle state.
  • the core network node may trigger the Enhanced Serving Mobile Location Centre (E-SMLC) entity to collect the historical access information of the terminal, and send the collected historical access information to the responsible prediction.
  • E-SMLC Enhanced Serving Mobile Location Centre
  • the prediction entity of the terminal behavior the prediction entity may be an existing network entity, for example, may be a network data analysis (NWDA) entity, and the prediction entity may also be an application server that specifically predicts the behavior of the terminal. Not limited.
  • the prediction entity predicts the location and time when the terminal transitions from the idle state to the connected state according to the historical access information of the terminal, and the specific embodiment of the present application is not limited thereto.
  • the predictive entity sends the predicted location and time to a Service Capability Exposure Function (SCEF) entity or a Network Exposure Function (NEF) entity or a Control Plane Function (CPF) entity.
  • SCEF Service Capability Exposure Function
  • NEF Network Exposure Function
  • CPF Control Plane Function
  • the predictive entity may also send information such as the temporary mobile identifier of the terminal, and the details are not described herein.
  • the timer may be started, and the duration of the timer is the difference between the time A and the time B, and the time A is: the predicted time when the terminal transits to the connected state.
  • Time B is: the time at which the prediction entity predicts the transition of the terminal to the connected state according to the historical access information of the terminal. For example, the predicting entity predicts the transition of the terminal to the connected state at 10:00 am (ie, time B), and the predictive entity predicts that the time for the terminal to transition to the connected state is 12:00 am (ie, time A) of the day, then The timer has a timing of 2 hours.
  • the timer may be set in the SCEF entity or the NEF entity or the prediction entity, and the timer may also be set in other network elements.
  • the function of the timer is that, when the timer expires, the entity that sets the timer sends a message carrying the predicted location of the terminal to the connected state to trigger the core network node as the terminal. Establish context information. For details, please refer to the following description.
  • the prediction entity sends the predicted time to the SCEF entity or the NEF entity.
  • the SCEF entity or the NEF entity sets the timer duration of the timer according to the received predicted time, and after the timer expires, goes to the core network node (in the 4G system, the core network node is the MME; in the 5G system, The core network node sends a message carrying the predicted location of the terminal to the connected state for the AMF entity or the SMF entity.
  • the other entity sends a message carrying the predicted location to the SCEF entity or the NEF entity after the timer expires.
  • the SCEF entity or the NEF entity sends a message carrying the predicted location of the terminal to the connected state to the core network node.
  • Step 2 After receiving the message carrying the predicted location, the core network node establishes context information for the terminal.
  • the specific establishment process of the context information is not limited in this embodiment of the present application, and details are not described herein again.
  • the core network node may send the context information of the terminal to the access network node.
  • the terminal After receiving the context information of the terminal, if the terminal does not establish a Radio Resource Control (RRC) connection with the access network node, the terminal may determine that the terminal does not need to be established immediately.
  • RRC Radio Resource Control
  • the access network node may also establish a mapping relationship between the temporary mobile identifier of the terminal and the context identifier of the terminal, so that when the temporary mobile identifier of the terminal is received, according to the temporary movement of the terminal Identifies the context information of the index out terminal.
  • the temporary mobile identity of the terminal may refer to the International Mobile Subscriber Identification (IMSI) or the System Architecture Evolution Temporary Mobile Subscriber Identification (S-TMSI) of the terminal, and of course, the temporary mobility of the terminal.
  • IMSI International Mobile Subscriber Identification
  • S-TMSI System Architecture Evolution Temporary Mobile Subscriber Identification
  • the logo may have other forms and will not be described here.
  • the core network node may send the first indication information to the access network node, and the first indication information is used to indicate that the access network node is receiving, After the context information of the terminal, it is not necessary to establish a wireless connection for the terminal immediately.
  • the access network node may allocate the radio resource to the terminal according to the context information of the terminal.
  • Radio resources include, but are not limited to, resources such as signaling radio bearers and data radio bearers between the terminal and the access network node.
  • the access network node when the terminal is in the idle state, only the core network node stores the context information of the terminal, and other nodes will clear the context information of the terminal. Therefore, after receiving the context information of the terminal, the access network node immediately becomes the terminal. Establish a wireless connection.
  • the access network node after receiving the context information of the terminal, the access network node does not need to establish a wireless connection for the terminal immediately.
  • the access network node only stores the context information of the terminal after receiving the context information of the terminal, and The terminal does not perform signaling interaction with the terminal, but when the terminal initiates an RRC connection or paging terminal, the access network node performs signaling interaction with the terminal to establish a wireless connection for the terminal.
  • the terminal may initiate a random access procedure when there is uplink data to be transmitted; the terminal may also initiate a random access procedure after receiving the first paging message sent by the access network node. Specifically, the random access procedure is initiated by sending the first message.
  • the first message may be an RRC Connection Request message.
  • the access network node when the access network node receives downlink data of the terminal from a core network node, the access network node sends a first paging message to the terminal.
  • the access network node is an AN entity
  • the user plane node is a UPF entity.
  • the UPF entity and the AN entity are connected, the UPF entity sends the downlink data of the terminal to the AN entity after receiving the downlink data of the terminal, so that the AN entity Sending a first paging message to the terminal;
  • the access network node when the access network node receives the second paging message from the core network node, the access network node sends a first paging message to the terminal.
  • the second paging message is used to instruct the access network node to page the terminal.
  • the second paging message is sent by the core network node after determining that the user plane node receives the downlink data of the terminal.
  • the user plane node is a UPF entity
  • the access network node is an AN entity
  • the core network node is an AMF entity.
  • the UPF entity caches the terminal after receiving the downlink data of the terminal.
  • the downlink data is sent to the SMF entity, and the SMF entity notifies the AMF entity after receiving the data notification message.
  • the AMF entity determines that the UPF entity receives the downlink data of the terminal.
  • the AMF entity sends a second paging message to the AN entity, which in turn sends the first paging message to the terminal.
  • the first paging message sent by the access network node may include the second indication information, where the second indication information is used to indicate that the context information of the terminal is saved in the access network node.
  • the second indication information may be used to indicate that the access network node stores context information of the terminal, or is used to indicate that the access network node has obtained context information of the terminal, or is used to Instructing the access network node to maintain context information of the terminal, or to indicate that the access network node has established context information of the terminal.
  • the first message sent by the terminal may include the temporary mobile identifier of the terminal.
  • the temporary mobility identifier of the terminal can be used to index the context information of the terminal.
  • the first message may further include an establishment cause of the wireless connection, and the like.
  • the reason for the establishment of the wireless connection is mobile originate (MO) data.
  • Mo-data When the reason for establishing the wireless connection is Mo-data, it indicates that the terminal makes a service request because it needs to send or receive data.
  • the access network node may obtain the context information of the terminal according to the temporary mobile identifier of the terminal. Specifically, the access network node may obtain a context identification mapped with the temporary mobile identifier of the terminal, and obtain the context information of the terminal according to the context identifier. It should be noted that the mapping relationship between the temporary mobility identifier of the terminal and the context identifier of the terminal is determined after the access network node obtains the context information of the terminal.
  • the access network node can obtain the context information of the terminal accurately and efficiently according to the temporary mobile identifier of the terminal, reduce the transition time of the terminal from the idle state to the connected state, and improve the efficiency of establishing a wireless connection for the terminal.
  • Radio resources include, but are not limited to, resources such as signaling radio bearers and data radio bearers between the terminal and the access network node.
  • the second message may be an RRC connection reconfiguration (Connection Reconfiguration) message, or an RRC connection recovery (Connection Resume) message, which may be determined according to actual conditions, which will be described in detail later.
  • RRC connection reconfiguration Connection Reconfiguration
  • RRC connection recovery Connection Resume
  • the radio resource indicated by the information of the radio resource allocated to the terminal included in the second message is determined according to the context information of the terminal.
  • the access network node may directly send the second message according to the first message, thereby skipping the step of establishing context information for the terminal.
  • the access network node after receiving the first message, the access network node first acquires a reason for establishing the wireless connection in the first message.
  • the access network node sends the second message to the terminal, thereby skipping the step of establishing context information for the terminal.
  • the access network node when the reason for the establishment of the wireless connection is not Mo-data, the access network node establishes context information for the terminal according to the prior art solution, for example, the access network node sends the initial user equipment to the core network node.
  • the initial UE message is received, and the steps of the initial context setup request sent by the core network node are received, and details are not described herein.
  • the reason for establishing the wireless connection is Mo-data
  • the terminal needs to send or receive data to perform a service request. Therefore, if the access network node has context information of the terminal, the access network node does not need to The core network nodes interact.
  • the reason for the establishment of the wireless connection is not MO-data
  • the terminal needs to interact with the core network node. For example, when the reason for the establishment is Mo-signalling, it indicates that the terminal may trigger the tracking area update process due to the movement.
  • the core network node allocates the network parameters such as the latest tracking area identity list (TAI List) to the terminal. Therefore, the access network node can perform the steps of sending the initial user equipment message according to the existing process, and the The terminal assigns a list of the latest tracking areas.
  • TAI List latest tracking area identity list
  • the access network node since the access network node has saved the context information of the terminal before receiving the first message, the access network node may skip (or not execute) to the core after receiving the first message.
  • the network node sends the Initial UE message, and receives the Initial Context Setup Request sent by the core network node to establish the terminal context information, and directly sends the second message to the terminal, thereby reducing the terminal sending the access node during the establishment of the wireless connection.
  • the number of signaling reduces the conversion time of the terminal from the idle state to the connected state.
  • the terminal may determine, according to the information of the radio resource in the second message, the radio resource allocated by the access network node to the terminal, and configure the bearer for NAS signaling according to the radio resource configuration.
  • SRB2 and a proprietary DRB for transmitting data in a private port portion, so that the terminal completes the transition from the idle state to the connected state.
  • the terminal may further send a third message to the access network node according to the second message, where the specific content of the third message may be different according to the second message, which are separately described below.
  • the first message may be an RRC connection reconfiguration message
  • the second message may be an RRC connection reconfiguration complete message (Connection Reconfiguration Complete) message
  • the first message may be an RRC connection request message
  • the second message may be an RRC connection recovery message
  • the third message may be an RRC Connection Recovery Complete message.
  • FIG. 3 is a schematic diagram of another wireless connection process provided by an embodiment of the present application.
  • the method shown in FIG. 3 can be applied to the following scenario: the terminal is in an idle state, and when the terminal needs to transmit uplink data, the terminal requests to establish a wireless connection between the terminal and the access network node.
  • the method shown in FIG. 3 is based on the method shown in FIG. 2, and the first message is an RRC connection request message, the second message is an RRC connection reconfiguration message, and the third message is an RRC connection reconfiguration complete (Connection Reconfiguration).
  • the Complete is described as an example.
  • the method shown in FIG. 3 specifically includes:
  • Step 301 The core network node establishes context information for the terminal in an idle state.
  • Step 302 The access network node receives the context information of the terminal from the core network node.
  • Step 303 The terminal sends a random access preamble (Random Access Preamble) to the access network node.
  • a random access preamble Random Access Preamble
  • the random access preamble can be used to initiate a random access procedure.
  • Step 304 The access network node sends a random access response (RAR) message to the terminal.
  • RAR random access response
  • the RAR message may include information such as a Cell Radio Network Temporary Identification (C-RNTI) allocated to the terminal, and details are not described herein.
  • C-RNTI Cell Radio Network Temporary Identification
  • the access network node may send a RAR message to the terminal by using a Downlink-Shared Channel (DL-SCH).
  • DL-SCH Downlink-Shared Channel
  • Step 305 The terminal sends a first message, that is, an RRC connection request message, to the access network node.
  • the first message may include information such as a temporary mobile identity of the terminal, a reason for establishing a wireless connection, and the like.
  • Step 306 The access network node sends an RRC Connection Setup message to the terminal.
  • the RRC connection setup message may include information such as SRB, DRB, and the like that the access network node allocates to the terminal based on the establishment cause of the wireless connection.
  • the access network node may send the RRC connection setup message to the terminal through the DL-SCH.
  • Step 307 The terminal sends an RRC Connection Setup Complete message to the access network node.
  • the RRC connection setup complete message may not include a service request message of a non-access stratum (NAS).
  • the service request message is used to trigger the core network node to establish context information for the terminal. Since the core network node has established context information for the terminal, the message may not be sent.
  • NAS non-access stratum
  • steps 306-307 are optional steps.
  • Step 308 The access network node sends a second message, that is, an RRC connection reconfiguration message, to the terminal.
  • the message may include information about the radio resource allocated to the terminal according to the context information of the terminal.
  • Step 309 The terminal sends a third message, that is, an RRC connection reconfiguration complete message, to the access network node.
  • the access network node has saved the context information of the terminal before the terminal sends the first message, so the access network node may skip (or not execute) to the core network after receiving the first message.
  • the node sends the Initial UE message, and receives the Initial Context Setup Request sent by the core network node to establish the terminal context information, and directly sends the second message to the terminal, thereby reducing the terminal sending the signal in the process of establishing the wireless connection.
  • the number of orders reduces the conversion time of the terminal from the idle state to the connected state.
  • FIG. 4 is a schematic diagram of another wireless connection process provided by an embodiment of the present application.
  • the method shown in FIG. 4 can be applied to the following scenario: the terminal is in an idle state, and when the terminal needs to transmit uplink data, the terminal requests to establish a wireless connection between the terminal and the access network node.
  • the method shown in FIG. 4 is based on the method shown in FIG. 2, and the first message is an RRC connection request message, the second message is an RRC connection recovery message, and the third message is an RRC Connection Resume Complete message. .
  • the method shown in FIG. 4 specifically includes:
  • Step 401 The core network node establishes context information for the terminal in an idle state.
  • Step 402 The access network node receives the context information of the terminal from the core network node.
  • Step 403 The terminal sends a random access preamble to the access network node, where the random access preamble is used to initiate a random access procedure.
  • Step 404 The access network node sends a RAR message to the terminal.
  • the access network node may send the RAR message to the terminal through the DL-SCH.
  • Step 405 The terminal sends a first message, that is, an RRC connection request message, to the access network node.
  • the first message may include information such as a temporary mobile identifier of the terminal.
  • the access network node after receiving the first message, acquires a context identifier mapped with the temporary mobility identifier of the terminal, and further obtains context information of the terminal according to the context identifier, and finally allocates the terminal according to the context information of the terminal.
  • Wireless resources After receiving the first message, acquires a context identifier mapped with the temporary mobility identifier of the terminal, and further obtains context information of the terminal according to the context identifier, and finally allocates the terminal according to the context information of the terminal.
  • Step 406 The access network node sends a second message, that is, an RRC connection recovery message, to the terminal.
  • the message may include information about the radio resource allocated to the terminal according to the context information of the terminal.
  • the second message may further include second indication information.
  • Step 407 The terminal sends a third message, that is, an RRC connection reconfiguration complete message, to the access network node.
  • the terminal may determine, according to the second message, context information that has been saved or stored or established or maintained or acquired in the access network node.
  • the access network node sends an RRC connection recovery message to the terminal instead of the RRC Connection Setup message sent in step 306 in FIG.
  • the access network node may implicitly inform the terminal by sending an RRC connection recovery message that the terminal has saved or stored or established or maintained or acquired the context information of the terminal, and the terminal may send an RRC connection to the access network node. Reconfiguration complete message.
  • the terminal may directly determine, according to the second indication information, context information that has been saved or stored or established or maintained or acquired in the access network node.
  • the terminal after determining that the context information of the terminal has been saved or stored or established or maintained or acquired, the terminal directly sends a third message to the access network node, and the core network node is triggered by the access network node.
  • the terminal establishes context information, thereby saving the number of signalings sent by the terminal during the establishment of the wireless connection, and reducing the transition time of the terminal from the idle state to the connected state.
  • FIG. 5 is a schematic diagram of another wireless connection process provided by an embodiment of the present application.
  • the method shown in FIG. 5 can be applied to a scenario in which an access network node receives downlink data of the terminal from a core network node, or an access network node receives a second paging message from a core network node.
  • the method shown in FIG. 5 is based on the method shown in FIG. 2, and the first message is an RRC connection request message, the second message is an RRC connection recovery message, and the third message is an RRC connection recovery complete message. .
  • the method shown in FIG. 5 specifically includes:
  • Step 501 The core network node establishes context information for the terminal in an idle state.
  • Step 502 The access network node receives the context information of the terminal from the core network node.
  • Step 503 The access network node receives downlink data of the terminal from the core network node, and sends a first paging message to the terminal.
  • step 503 the access network node receives the second paging message from the core network node, and sends the first paging message to the terminal.
  • the first paging message may include second indication information.
  • Step 504 The terminal sends a random access preamble to the access network node, where the random access preamble is used to initiate a random access procedure.
  • Step 505 The access network node sends a RAR message to the terminal.
  • Step 506 The terminal sends a first message, that is, an RRC connection request message, to the access network node.
  • the first message may include information such as a temporary mobile identifier of the terminal.
  • the access network node after receiving the first message, acquires a context identifier mapped with the temporary mobility identifier of the terminal, and further obtains context information of the terminal according to the context identifier, and finally allocates the terminal according to the context information of the terminal.
  • Wireless resources After receiving the first message, acquires a context identifier mapped with the temporary mobility identifier of the terminal, and further obtains context information of the terminal according to the context identifier, and finally allocates the terminal according to the context information of the terminal.
  • Step 507 The access network node sends a second message, that is, an RRC connection recovery message, to the terminal.
  • the message may include information about the radio resource allocated to the terminal according to the context information of the terminal.
  • Step 508 The terminal sends a third message, that is, an RRC connection reconfiguration complete message, to the access network node.
  • the terminal may directly determine, according to the second indication information in the first paging message, context information that has been saved or stored or established or maintained or acquired in the access network node, so that the RRC may be sent to the access network node.
  • Connection reconfiguration complete message may be directly determine, according to the second indication information in the first paging message, context information that has been saved or stored or established or maintained or acquired in the access network node, so that the RRC may be sent to the access network node.
  • Connection reconfiguration complete message may be used to the access network node.
  • the terminal determines, according to the second indication information in the first paging message, that the context information of the terminal has been saved or stored or established or maintained or acquired, and directly sends the third message to the access network node. Therefore, the access network node is no longer triggered to trigger the core network node to establish context information for the terminal, thereby saving the number of signaling sent by the terminal during the establishment of the wireless connection, and reducing the transition time of the terminal from the idle state to the connected state. .
  • the embodiment of the present application provides a schematic diagram of a structure of an access network node, where the access network node can perform the actions of the access network node in the foregoing method embodiments.
  • the access network node may be an access network entity or the like.
  • the access network node 600 includes a receiving unit 601 and a transmitting unit 602.
  • the receiving unit 601 is configured to receive, by the terminal, a first message, where the first message is used to request to establish a wireless connection between the terminal and the access network node;
  • the sending unit 602 is configured to send, according to the first message, a second message to the terminal, where the second message includes information about a radio resource allocated to the terminal.
  • the step of requesting the core network node to establish the terminal context information may be skipped (or not performed), and the second message is directly sent to the terminal, thereby reducing the terminal being During the establishment of the wireless connection, the number of signaling sent by the access network node reduces the transition time of the terminal from the idle state to the connected state.
  • the receiving unit 601 before receiving the first message from the terminal, the receiving unit 601 is further configured to:
  • the context information of the terminal is received from a core network node.
  • the method obtains the context information of the terminal before receiving the first message, reduces the conversion time of the terminal from the idle state to the connected state, and improves system efficiency.
  • the receiving unit 601 is further configured to:
  • the first indication information is received from the core network node, where the first indication information is used to indicate that the access network node does not need to establish a wireless connection for the terminal immediately after receiving the context information of the terminal.
  • the access network node After receiving the context information of the terminal, the access network node only stores the context information of the terminal, and does not perform signaling interaction with the terminal, but when the terminal initiates an RRC connection or paging terminal, the access network node Perform signaling interaction with the terminal to establish a wireless connection for the terminal, thereby reducing the transition time of the terminal from the idle state to the connected state.
  • the access network node 600 further includes a processing unit 603; the first message includes a temporary mobile identifier of the terminal; and the sending unit 602 is configured to perform the according to the first message.
  • the processing unit 603 is configured to:
  • the access network node obtains the context information of the terminal accurately and efficiently according to the temporary mobile identifier of the terminal, reduces the transition time of the terminal from the idle state to the connected state, and improves the efficiency of establishing a wireless connection for the terminal.
  • the second message further includes second indication information, where the second indication information is used to indicate that the access network node saves context information of the terminal.
  • the access network node can indicate to the terminal that the context information of the terminal has been saved or stored or established or maintained or acquired in the access network node by using the second indication information, so that the terminal can no longer trigger the core through the access network node.
  • the network node establishes the context information for the terminal, thereby saving the number of signaling sent by the terminal during the establishment of the wireless connection, and reducing the conversion time of the terminal from the idle state to the connected state.
  • the first message includes a reason for establishing a wireless connection; the sending unit 602 is specifically configured to:
  • the second message is sent to the terminal.
  • the reason for establishing the wireless connection is the mobile source data
  • the second message is sent directly to the terminal without interacting with the core network node, which reduces the conversion time of the terminal from the idle state to the connected state.
  • the sending unit 602 before the receiving unit 601 receives the first message from the terminal, the sending unit 602 is further configured to:
  • the first paging message includes second indication information, where the second indication information is used to indicate that context information of the terminal is saved in the access network node.
  • the terminal 700 includes: a sending unit 701 and a receiving unit 702.
  • the sending unit 701 is configured to send a first message to the access network node, where the first message is used to request to establish a wireless connection with the access network node;
  • the receiving unit 702 is configured to receive, by the access network node, a second message, where the second message is sent by the access network node according to the first message, and the second message includes Information about the wireless resources of the terminal.
  • the access network node directly sends the second message to the terminal after receiving the first message, so that the terminal can obtain the information of the radio resource allocated by the access network node to the terminal, thereby reducing the terminal from the terminal.
  • the first message is a radio resource control RRC connection request message
  • the second message is an RRC connection recovery message
  • the sending unit 701 is further configured to:
  • the receiving unit 702 before the sending unit 701 sends the third message to the access network node, the receiving unit 702 is further configured to:
  • the terminal may directly determine, according to the second indication information in the first paging message, context information that has been saved or stored or established or maintained or acquired in the access network node, so that the core network node may not be triggered to be established.
  • the step of context information thereby reducing the transition time of the terminal from the idle state to the connected state.
  • the second message further includes second indication information, where the second indication information is used to indicate that the access network node saves context information of the terminal.
  • the terminal may determine, according to the second indication information in the second message, the context information of the terminal that has been saved or stored or established or maintained or acquired in the access network node, and the terminal may not be triggered by the access network node.
  • the core network node establishes the context information for the terminal, thereby saving the number of signaling sent by the terminal during the establishment of the wireless connection, and reducing the transition time of the terminal from the idle state to the connected state.
  • the apparatus may be an access network node, and the apparatus may perform the actions of the access network node in the foregoing method embodiments.
  • the access network node may be an access network entity or the like.
  • the apparatus 800 includes a processor 801, a transceiver 802, a memory 803, and a communication interface 804; wherein the processor 801, the transceiver 802, the memory 803, and the communication interface 804 are connected to one another via a bus 805.
  • the processor 801 can be a central processing unit (CPU), a network processor (NP), or a combination of a CPU and an NP.
  • the processor 801 may further include a hardware chip.
  • the hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof.
  • the PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a general array logic (GAL), or any combination thereof.
  • the memory 803 may include a volatile memory such as a random-access memory (RAM); the memory may also include a non-volatile memory such as a flash memory.
  • RAM random-access memory
  • the memory may also include a non-volatile memory such as a flash memory.
  • HDD hard disk drive
  • SSD solid-state drive
  • the communication interface 804 can be a wired communication access port, a wireless communication interface, or a combination thereof, wherein the wired communication interface can be, for example, an Ethernet interface.
  • the Ethernet interface can be an optical interface, an electrical interface, or a combination thereof.
  • the wireless communication interface can be a WLAN interface.
  • the bus 805 can be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus.
  • PCI peripheral component interconnect
  • EISA extended industry standard architecture
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one double-headed arrow is shown in Figure 8, but it does not mean that there is only one bus or one type of bus.
  • the memory 803 can be used to store program instructions, and the processor 801 calls the program instructions stored in the memory 803 to perform one or more of the steps shown in the above scheme, or an optional implementation thereof, such that access
  • the network node 800 implements the functions in the above method.
  • the transceiver 802 is configured to receive, by the terminal, a first message, where the first message is used to request to establish a wireless connection between the terminal and the access network node;
  • the processor 801 is configured to determine, according to the first message, a second message, where the second message includes information about a radio resource allocated to the terminal;
  • the transceiver 802 is configured to send a second message to the terminal.
  • the device may skip (or not perform) the step of requesting the core network node to establish the terminal context information, and directly send the second message to the terminal, thereby reducing the terminal.
  • the number of signaling sent by the access network node reduces the transition time of the terminal from the idle state to the connected state.
  • the transceiver 802 is further configured to: before receiving the first message from the terminal:
  • the context information of the terminal is received from a core network node.
  • acquiring context information of the terminal reduces the conversion time of the terminal from the idle state to the connected state, thereby improving system efficiency.
  • the transceiver 802 is further configured to:
  • the first indication information is received from the core network node, where the first indication information is used to indicate that the access network node does not need to establish a wireless connection for the terminal immediately after receiving the context information of the terminal.
  • the access network node and the terminal perform a message. Let the interaction establish a wireless connection for the terminal, thereby reducing the transition time of the terminal from the idle state to the connected state.
  • the first message includes a temporary mobile identifier of the terminal
  • the processor 601 is configured to:
  • the context information of the terminal can be obtained accurately and efficiently, the conversion time of the terminal from the idle state to the connected state is reduced, and the efficiency of establishing a wireless connection for the terminal is improved.
  • the second message further includes second indication information, where the second indication information is used to indicate that the access network node saves context information of the terminal.
  • the second indication information is used to indicate to the terminal that the context information of the terminal has been saved in the access network node, so that the terminal can no longer trigger the core network node to establish context information for the terminal by using the access network node, thereby saving the network information. The number of signalings sent by the terminal during the establishment of the wireless connection, and the conversion time of the terminal from the idle state to the connected state is reduced.
  • the first message includes a reason for establishing a wireless connection
  • the transceiver 802 is specifically configured to: when the establishment cause of the wireless connection is mobile source data, send the Second message.
  • the device when the reason for establishing the wireless connection is mobile source data, indicating that the terminal needs to send or receive data to perform a service request, the device does not need to interact with the core network node after receiving the first message.
  • the second message is directly sent to the terminal, which reduces the conversion time of the terminal from the idle state to the connected state.
  • the transceiver 802 before receiving the first message from the terminal, the transceiver 802 is further configured to:
  • the first paging message includes second indication information, where the second indication information is used to indicate that context information of the terminal is saved in the access network node.
  • the embodiment of the present application further provides a device, which may be a terminal, and may be used to perform the actions of the terminal in the foregoing method embodiments.
  • the device 900 includes a processor 901, a transceiver 902, a memory 903, and a communication interface 904.
  • the processor 901, the transceiver 902, the memory 903, and the communication interface 904 are connected to each other through a bus 905.
  • the description of related modules in 8 will not be repeated here.
  • the memory 903 can be used to store program instructions, and the processor 901 calls the program instructions stored in the memory 903 to execute:
  • the access network node directly sends the second message to the terminal after receiving the first message, so that the terminal can obtain the information of the radio resource allocated by the access network node to the terminal, thereby reducing the terminal from the terminal.
  • the first message is a radio resource control RRC connection request message
  • the second message is an RRC connection recovery message
  • the transceiver 902 is further configured to:
  • the transceiver 902 is further configured to: when the transceiver 902 sends the third message to the access network node:
  • the device may directly determine, according to the second indication information in the first paging message, context information that the terminal has been saved in the access network node, so that the step of triggering the core network node to establish context information may be eliminated, thereby reducing The conversion time of the terminal from the idle state to the connected state.
  • the second message further includes second indication information, where the second indication information is used to indicate that the access network node saves context information of the terminal.
  • the terminal may determine, according to the second indication information in the second message, that the context information of the terminal has been saved in the access network node, and the terminal may not trigger the core network node to establish the context information for the terminal by using the access network node.
  • the steps thereby saving the number of signaling sent by the terminal during the establishment of the wireless connection, and reducing the transition time of the terminal from the idle state to the connected state.
  • the embodiment of the present application further provides a computer readable storage medium for storing computer software instructions executed by the processor 901, which includes the program executed by the processor 901.
  • the embodiment of the present application further provides a computer readable storage medium for storing computer software instructions executed by the processor 801, which includes the program executed by the processor 801.
  • the embodiment of the present application further provides a system, including: the access network node shown in FIG. 8 and the terminal shown in FIG.
  • embodiments of the present application can be provided as a method, system, or computer program product.
  • the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment in combination of software and hardware.
  • the application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, optical storage, etc.) including computer usable program code.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

一种无线连接方法及装置，其中方法包括：接入网节点从终端接收第一消息，所述第一消息用于请求建立所述终端与所述接入网节点之间的无线连接；所述接入网节点根据所述第一消息向所述终端发送第二消息，所述第二消息中包括分配给所述终端的无线资源的信息。

Description

一种无线连接方法及装置
本申请要求在2017年8月2日提交国家专利局、申请号为201710652808.1、发明名称为“一种无线连接方法及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及信息技术领域，尤其涉及一种无线连接方法及装置。
背景技术
在第三代伙伴计划(the 3rd generation partnership project，3GPP)系统中，当处于空闲(idle)态的终端需要发送上行信令或数据时，或者，当核心网向终端发送下行信令或数据时，终端需要通过随机接入过程与接入网设备(例如基站)建立连接。终端与接入网设备在建立连接的过程中，终端接收到接入网设备发送的无线资源控制(radio resource control，RRC)连接建立(connection setup)消息之后，终端会向接入网设备发送包括服务请求(service request)消息的RRC连接建立完成(connection setup complete)消息，从而完成与接入网设备建立连接。接入网设备接收到RRC连接建立完成消息之后，将其中的服务请求消息透传给核心网设备(例如移动性管理实体(mobility management entity，MME))，用于触发核心网设备为终端建立上下文信息。核心网设备为终端建立上下文信息之后，将所述上下文信息发送给接入网设备，接入网设备根据接收到的上下文信息为终端分配无线资源，例如无线资源可以为终端与接入网设备之间的信令无线承载(signaling radio bearer，SRB)以及数据无线承载(data radio bearer，DRB)等。
从上述过程可以看出，终端完成从空闲态到连接态的转换，需要经过终端进行随机接入过程、终端的上下文信息建立以及终端的无线资源分配等过程，这些过程非常耗时，导致终端等待连接建立的时间过长，降低了系统效率。
发明内容
本申请提供一种无线连接方法及装置，用以解决现有技术中终端从空闲态到连接态的转换时间过长的问题。
第一方面，本申请实施例提供了一种无线连接方法，该方法包括：
接入网节点从终端接收第一消息，所述第一消息用于请求建立所述终端与所述接入网节点之间的无线连接；所述接入网节点根据所述第一消息向所述终端发送第二消息，所述第二消息中包括分配给所述终端的无线资源的信息。
通过上述方法，接入网节点在接收到第一消息之后，可以跳过(或者说，不执行)向核心网节点请求为建立终端上下文信息的步骤，直接向终端发送第二消息，从而减少了终端在建立无线连接过程中，接入网节点发送信令的数量，减少了终端从空闲态到连接态的转换时间。
一种可选地实施方式中，在所述接入网节点从终端接收第一消息之前，所述方法还包 括：
所述接入网节点从核心网节点接收所述终端的上下文信息。
通过上述方法，接入网节点在接收到第一消息之前，获取终端的上下文信息，减少了终端从空闲态到连接态的转换时间，提高了系统效率。
一种可选地实施方式中，所述方法还包括：
所述接入网节点从核心网节点接收第一指示信息，所述第一指示信息用于指示所述接入网节点在接收到所述终端的上下文信息后，无需立即为所述终端建立无线连接。
现有技术中，终端处于空闲态时，只有核心网节点中保存终端的上下文信息，其他节点将会清除终端的上下文信息，因此，接入网节点接收到终端的上下文信息之后，会立即为终端建立无线连接。而上述方案中，接入网节点在接收到终端的上下文信息之后，只是存储终端的上下文信息，并不与终端进行信令交互，而是在终端发起RRC连接或寻呼终端时，接入网节点与终端进行信令交互，为终端建立无线连接，从而减少了终端从空闲态到连接态的转换时间。
一种可选地实施方式中，所述第一消息中包括所述终端的临时移动标识；
在所述接入网节点根据所述第一消息向所述终端发送第二消息之前，所述方法还包括：
所述接入网节点根据所述终端的临时移动标识，获得所述终端的上下文信息，并根据所述终端的上下文信息为所述终端分配所述无线资源。
上述方案中，接入网节点可以根据终端的临时移动标识，准确、高效的获得所述终端的上下文信息，减少了终端从空闲态到连接态的转换时间，提高为终端建立无线连接的效率。
一种可选地实施方式中，所述第二消息中还包括第二指示信息，所述第二指示信息用于指示所述接入网节点保存了所述终端的上下文信息。
上述方案中，接入网节点可以通过第二指示信息向终端指示接入网节点中已经保存或存储或建立或维护或获取了终端的上下文信息，终端从而可以不再通过接入网节点触发核心网节点为终端建立上下文信息的步骤，从而节省了终端建立无线连接过程中发送的信令的数量，以及减少了终端从空闲态到连接态的转换时间。
一种可选地实施方式中，所述第一消息中包括无线连接的建立原因；
所述接入网节点根据所述第一消息向所述终端发送第二消息，还包括：
当所述无线连接的建立原因为移动源数据时，所述接入网节点向所述终端发送所述第二消息。
上述方案中，当所述无线连接的建立原因为移动源数据时，表示终端是因为需要发送或接收数据而进行服务请求，因此接入网节点中保存了终端的上下文信息时，接入网节点无需与核心网节点进行交互，直接向终端发送第二消息，减少了终端从空闲态到连接态的转换时间。
一种可选地实施方式中，在所述接入网节点从终端接收第一消息之前，所述方法还包括：
当所述接入网节点从所述核心网节点接收所述终端的下行数据时，所述接入网节点向所述终端发送第一寻呼消息；或者，当所述接入网节点从所述核心网节点接收第二寻呼消息时，所述接入网节点向所述终端发送第一寻呼消息，所述第二寻呼消息用于指示所述接入网节点寻呼所述终端；其中，所述第一寻呼消息中包括第二指示信息，所述第二指示信 息用于指示所述接入网节点中保存了所述终端的上下文信息。
第二方面，本申请实施例提供一种接入网节点，所述接入网节包括存储器、收发机和处理器，其中：存储器用于存储指令；处理器用于根据执行存储器存储的指令，并控制收发机进行信号接收和信号发送，当处理器执行存储器存储的指令时，接入网节点用于执行上述第一方面或第一方面中任一种可能的设计中的方法。
第三方面，本申请实施例提供一种接入网节点，用于实现上述第一方面或第一方面中的任意一种方法，包括相应的功能模块，例如包括处理单元、接收单元、发送单元等，分别用于实现以上方法中的步骤。
第四方面，本申请实施例提供一种计算机可读存储介质，所述计算机存储介质中存储有计算机可读指令，当计算机读取并执行所述计算机可读指令时，使得计算机执行上述第一方面或第一方面中任一种可能的设计中的方法。
第五方面，本申请实施例提供一种计算机程序产品，当计算机读取并执行所述计算机程序产品时，使得计算机执行上述第一方面或第一方面中任一种可能的设计中的方法。
第六方面，本申请实施例提供一种芯片，所述芯片与存储器相连，用于读取并执行所述存储器中存储的软件程序，以实现上述第一方面或第一方面中任一种可能的设计中的方法。
第七方面，本申请实施例提供一种无线连接方法，所述方法包括：
终端向接入网节点发送第一消息，所述第一消息用于请求建立与所述接入网节点的无线连接；所述终端从所述接入网节点接收第二消息，所述第二消息为所述接入网节点根据所述第一消息发送的，所述第二消息中包括分配给所述终端的无线资源的信息。
通过上述方法，由于接入网节点在接收到第一消息之后，直接向终端发送第二消息，终端从而可以更快的获得接入网节点分配给终端的无线资源的信息，从而减少了终端从空闲态到连接态的转换时间。
一种可选地实施方式中，所述第一消息为无线资源控制RRC连接请求消息，所述第二消息为RRC连接恢复消息；
所述方法还包括：
所述终端根据所述第二消息向所述接入网节点发送第三消息，所述第三消息为RRC连接恢复完成消息。
一种可选地实施方式中，在所述终端向所述接入网节点发送第三消息之前，还包括：
所述终端接收所述接入网节点发送的第一寻呼消息，所述第一寻呼消息中包括第二指示信息，所述第二指示信息用于指示所述接入网节点中保存了所述终端的上下文信息。
上述方案中，终端可以直接根据第一寻呼消息中的第二指示信息确定接入网节点中已经保存或存储或建立或维护或获取了终端的上下文信息，从而可以向接入网节点发送RRC连接重配置完成消息。
一种可选地实施方式中，所述第二消息中还包括第二指示信息，所述第二指示信息用于指示所述接入网节点保存了所述终端的上下文信息。
上述方案中，终端可以直接根据第二消息中的第二指示信息确定接入网节点中已经保存或存储或建立或维护或获取了终端的上下文信息，终端从而可以不再通过接入网节点触发核心网节点为终端建立上下文信息的步骤，从而节省了终端建立无线连接过程中发送的信令的数量，以及减少了终端从空闲态到连接态的转换时间。
第八方面，本申请实施例提供一种接入网节点，所述接入网节包括存储器、收发机和处理器，其中：存储器用于存储指令；处理器用于根据执行存储器存储的指令，并控制收发机进行信号接收和信号发送，当处理器执行存储器存储的指令时，终端用于执行上述第七方面或第七方面中任一种可能的设计中的方法。
第九方面，本申请实施例提供一种接入网节点，用于实现上述第七方面或第七方面中的任意一种方法，包括相应的功能模块，例如包括处理单元、接收单元、发送单元等，分别用于实现以上方法中的步骤。
第十方面，本申请实施例提供一种计算机可读存储介质，所述计算机存储介质中存储有计算机可读指令，当计算机读取并执行所述计算机可读指令时，使得计算机执行上述第七方面或第七方面中任一种可能的设计中的方法。
第十一方面，本申请实施例提供一种计算机程序产品，当计算机读取并执行所述计算机程序产品时，使得计算机执行上述第七方面或第七方面中任一种可能的设计中的方法。
第十二方面，本申请实施例提供一种芯片，所述芯片与存储器相连，用于读取并执行所述存储器中存储的软件程序，以实现上述第七方面或第七方面中任一种可能的设计中的方法。
附图说明
图1为适用于本申请实施例的一种系统架构示意图；
图2为本申请实施例提供的一种无线连接方法流程示意图；
图3为本申请实施例提供的另一种无线连接流程示意图；
图4为本申请实施例提供的另一种无线连接流程示意图；
图5为本申请实施例提供的另一种无线连接流程示意图；
图6为本申请实施例提供的一种接入网节点结构示意图；
图7为本申请实施例提供的一种终端结构示意图；
图8为本申请实施例提供的一种装置结构示意图；
图9为本申请实施例提供的另一种装置结构示意图。
具体实施方式
下面将结合附图对本申请作进一步地详细描述。
图1示例性示出了适用于本申请实施例的一种系统架构示意图，如图1所示，在未来的5G系统架构中，终端101可以经接入网实体102与核心网进行通信，终端可以指用户设备(User Equipment，UE)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。接入终端可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol，SIP)电话、无线本地环路(Wireless Local Loop，WLL)站、个人数字处理(Personal Digital Assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备，未来5G网络中的终端等。图1中为方便描述，只示例出1个终端，实际网络中，可能存在多个终端共存，在此不再赘述。
接入网(Access Network，AN)实体102，接入网实体也可以称之为无线接入网(Radio  Access Network，RAN)实体，以下统称为接入网实体或AN实体，主要负责为终端101提供无线连接，保证终端101的上下行数据的可靠传输等。接入网实体102可为5G系统中的gNB(generation Node B)，可以是全球移动通讯(Global System of Mobile communication，GSM)系统或码分多址(Code Division Multiple Access，CDMA)中的基站(Base Transceiver Station，BTS)，也可以是宽带码分多址(Wideband Code Division Multiple Access，WCDMA)系统中的基站(NodeB，NB)，还可以是长期演进(Long Term Evolution，LTE)系统中的演进型基站(Evolutional Node B，eNB或eNodeB)等。
会话管理功能(Session Management Function，SMF)实体103，该实体可以用于执行LTE系统中移动性管理实体(Mobility Management Entity，MME)的部分功能，主要负责为终端101建立会话、管理会话等。可以根据终端101的位置信息为终端101选择合适的用户面功能(User Plane Function，UPF)实体。
用户面功能实体104，是终端101用户面的功能网元，主要功能包括分组路由和转发，用户面数据的服务质量(Quality of Service，QoS)处理等。
接入和移动性管理(Access and Mobility Management Function,AMF)实体105，主要功能包括无线接入网络控制平面的终结点，非接入信令的终结点，移动性管理，合法监听，接入授权或鉴权等等。
策略控制功能(Policy Control Funtion，PCF)实体106，主要负责用户面传输路径的建立、释放和更改等功能。
鉴权服务器功能(Authentication Server Function，AUSF)实体107，其主要功能包括用户鉴权等。
用户数据管理(User Data Management，UDM)实体108，主要负责管理用户的签约数据等。
数据网络(Data Network，DN)109可以是指为终端101提供服务的网络，比如有些DN可以为终端101提供上网功能，有些DN可以为终端101提供彩信功能。
图1中还示出了各个实体中的接口的可能实现方式，比如接入网实体102和AMF实体109之间的N2接口，接入网实体102与UPF实体104之间的N9接口等等，在此不再一一赘述。
如图2所示，为本申请实施例提供的一种无线连接方法流程示意图。参见图2，该方法包括：
步骤201：终端向接入网节点发送第一消息。
所述第一消息用于请求建立与所述接入网节点的无线连接。
本申请实施例中，接入网节点可以是指接入网实体等，接入网实体的具体内容可以参见上述相关描述。
步骤202：接入网节点从终端接收第一消息。
步骤203：接入网节点根据第一消息向终端发送第二消息。
该第二消息中包括分配给所述终端的无线资源的信息。
步骤204：终端从接入网节点接收第二消息。
可选地，在步骤201之前，还包括：核心网节点根据终端的历史接入信息，为处于空闲态的终端建立上下文信息。
需要说明的是，此处核心网节点为终端建立上下文信息的时间点与现有技术不同。现 有技术中，只有核心网节点接收到终端的服务请求消息时，才会为终端建立上下文信息，而本申请实施例中，核心网节点是根据终端的历史接入信息对终端转换到连接态的行为进行预测，并在预测出终端转换到连接态时的时间，为终端建立上下文信息。
其中，终端的历史接入信息可以包括但不限于：终端接入网络的时间点、终端每次接入网络的时长、终端接入网络的位置信息、终端接入网络时的移动范围、终端的移动速度、终端的移动方向等。
其中，核心网节点可以为MME或AMF实体或SMF实体等，上述实体的具体功能可以参见图1中对应实体的相关描述。
具体地，为处于空闲态的终端建立上下文信息可以包括以下步骤：
步骤一、对终端从空闲态转换到连接态时的位置进行预测。
例如，当终端由连接态转换到空闲态时，负责移动性管理的核心网节点(例如，MME或AMF实体)根据接入网节点发送的用户设备上下文释放消息(UE context release message)等消息确定终端已经处于空闲态。
当终端处于空闲态时，核心网节点可以触发增强服务移动定位中心(Enhanced Serving Mobile Location Centre，E-SMLC)实体收集终端的历史接入信息，并将收集到的历史接入信息发送给负责预测终端行为的预测实体，预测实体可能是已有网络实体，例如可以是网络数据分析(Network Data Analysis，NWDA)实体等，预测实体也可能是专门预测终端行为的应用服务器，本申请实施例对此并不限定。
预测实体根据终端的历史接入信息预测终端从空闲态转换到连接态时的位置和时间，具体如何预测，本申请实施例对此并不限定。预测实体将预测出的位置和时间发送给业务能力开放功能(Service Capability Exposure Function，SCEF)实体或网络开放功能(Network Exposure Function，NEF)实体或控制面功能(Control Plane Function，CPF)实体。在发送预测出的位置和时间的同时，预测实体还可以发送终端的临时移动标识等信息，在此不再赘述。
可选地，当预测实体预测出上述位置和时间时，可以启动定时器，该定时器的时长为时间A与时间B的差值，时间A为：预测出的终端转换到连接态时的时间；时间B为：预测实体根据终端的历史接入信息，对终端转换到连接态进行预测的时间。例如，预测实体在上午10时0分(即时间B)对终端转换到连接态进行预测，预测实体预测出终端转换到连接态的时间为当天的上午12时0分(即时间A)，那么定时器的定时时长为2小时。
其中，上述定时器可能设置在SCEF实体或NEF实体或预测实体中，定时器也可能设置在其他网元中。定时器的作用是，在定时器超时时，由设置了所述定时器的实体向核心网节点发送携带有预测出的终端转换到连接态时的位置的消息，用以触发核心网节点为终端建立上下文信息，具体可以参考下面的描述。
如果定时器设置在SCEF实体或NEF实体中，则预测实体将上述预测出的时间发送至SCEF实体或NEF实体。SCEF实体或NEF实体根据接收到的上述预测出的时间设置定时器的定时时长，并在定时器的定时器超时后，向核心网节点(4G系统中，核心网节点为MME；5G系统中，核心网节点为AMF实体或SMF实体)发送携带有预测出的终端转换到连接态时的位置的消息。
如果定时器设置在其他实体，那么其他实体在定时器超时后，向SCEF实体或NEF实体发送携带有上述预测出的位置的消息。SCEF实体或NEF实体接收到此消息后，向核心 网节点发送携带有预测出的终端转换到连接态时的位置的消息。
步骤二、核心网节点接收到携带有预测出的位置的消息之后，为终端建立上下文信息。上下文信息的具体建立过程，本申请实施例对此并不限定，在此不再赘述。
核心网节点在为终端建立上下文信息之后，可以向接入网节点发送终端的上下文信息。
接入网节点在接收到所述终端的上下文信息之后，若所述终端没有与所述接入网节点建立无线资源控制(Radio Resource Control，RRC)连接，则可以确定无需立即为所述终端建立无线连接。
接入网节点在接收到所述终端的上下文信息之后，还可以建立终端的临时移动标识与终端的上下文标识之间的映射关系，以便在接收到终端的临时移动标识时，根据终端的临时移动标识索引出终端的上下文信息。终端的临时移动标识可以是指终端的国际移动用户标识(International Mobile Subscriber Identification，IMSI)或系统架构演进临时移动用户标识(System Architecture Evolution Temporary Mobile Subscriber Identification，S-TMSI)等，当然终端的临时移动标识还可以有其他形式，在此不再赘述。
可选的，核心网节点向接入网节点发送终端的上下文信息的同时，还可以向接入网节点发送第一指示信息，所述第一指示信息用于指示所述接入网节点在接收到所述终端的上下文信息后，无需立即为所述终端建立无线连接。接入网节点在接收到所述终端的上下文信息后，可以根据终端的上下文信息为终端分配的无线资源。无线资源包括但不限于为终端与接入网节点之间的信令无线承载以及数据无线承载等资源。
现有技术中，终端处于空闲态时，只有核心网节点中保存终端的上下文信息，其他节点将会清除终端的上下文信息，因此，接入网节点接收到终端的上下文信息之后，会立即为终端建立无线连接。而本申请实施例中，接入网节点在接收到终端的上下文信息之后，无需立即为终端建立无线连接，换言之，接入网节点在接收到终端的上下文信息之后只是存储终端的上下文信息，并不与终端进行信令交互，而是在终端发起RRC连接或寻呼终端时，接入网节点与终端进行信令交互，为终端建立无线连接。
示例性地，在步骤201中，终端可以在有上行数据需要传输时，发起随机接入过程；终端也可以在接收到接入网节点发送的第一寻呼消息之后，发起随机接入过程。具体地，通过发送第一消息发起随机接入流程。
本申请实施例中，第一消息可以为RRC连接请求(Connection Request)消息。
一种可能的场景中，当所述接入网节点从核心网节点接收所述终端的下行数据时，所述接入网节点向所述终端发送第一寻呼消息。例如，接入网节点为AN实体，用户面节点为UPF实体，当UPF实体与AN实体存在连接时，UPF实体在接收到终端的下行数据之后向AN实体发送该终端的下行数据，从而AN实体向终端发送第一寻呼消息；
另一种可能的场景中，当所述接入网节点从所述核心网节点接收第二寻呼消息时，所述接入网节点向所述终端发送第一寻呼消息。其中，所述第二寻呼消息用于指示所述接入网节点寻呼所述终端。所述第二寻呼消息为所述核心网节点确定用户面节点接收到所述终端的下行数据后发送的。例如，用户面节点为UPF实体，接入网节点为AN实体，核心网节点为AMF实体，当UPF实体与AN实体之间不存在连接时，UPF实体在接收到终端的下行数据之后缓存该终端的下行数据，并向SMF实体发送数据通知消息，SMF实体接收到数据通知消息后通知AMF实体，此时AMF实体确定UPF实体接收到终端的下行数据。AMF实体向AN实体发送第二寻呼消息，AN实体从而向终端发送第一寻呼消息。
本申请实施例中，接入网节点发送的第一寻呼消息中可以包括第二指示信息，所述第二指示信息用于指示所述接入网节点中保存了所述终端的上下文信息。或者所述第二指示信息也可以用于指示所述接入网节点存储了所述终端的上下文信息，或者用于指示所述接入网节点已经获取到所述终端的上下文信息，或者用于指示所述接入网节点维护有所述终端的上下文信息，或者用于指示所述接入网节点已经建立了所述终端的上下文信息。
本申请实施例中，终端发送的第一消息中可以包括所述终端的临时移动标识。终端的临时移动标识可以用来索引终端的上下文信息。
进一步的，第一消息中还可以包括无线连接的建立原因(Establishment Cause)等。例如，无线连接的建立原因为移动源(mobile originate，MO)数据(data)，当无线连接的建立原因为Mo-data时，表示终端是因为需要发送或接收数据而进行服务请求。
此时在步骤202中，接入网节点从终端接收第一消息之后，可以根据所述终端的临时移动标识，获得所述终端的上下文信息。具体的，接入网节点可以获取与终端的临时移动标识映射的上下文标识(context identification)，进而根据所述上下文标识获得所述终端的上下文信息。需要说明的是，终端的临时移动标识与终端的上下文标识之间的映射关系，为接入网节点获得终端的上下文信息之后确定的。
上述方案中，接入网节点可以根据终端的临时移动标识，准确、高效的获得所述终端的上下文信息，减少了终端从空闲态到连接态的转换时间，提高为终端建立无线连接的效率。
此外，接入网节点获得所述终端的上下文信息之后，可以根据所述终端的上下文信息为所述终端分配所述无线资源。无线资源包括但不限于为终端与接入网节点之间的信令无线承载以及数据无线承载等资源。
步骤203中，第二消息可以为RRC连接重配置(Connection Reconfiguration)消息，或者RRC连接恢复(Connection Resume)消息，具体可以根据实际情况确定，在后面将详细描述。
此外，第二消息中包括的分配给所述终端的无线资源的信息所指示的无线资源，是根据所述终端的上下文信息确定的。
本申请实施例中，一种可能的实现方式中，接入网节点接收到第一消息之后，可以直接根据第一消息发送第二消息，从而跳过为终端建立上下文信息的步骤。
另一种可能的实现方式中，接入网节点接收到第一消息之后，先获取第一消息中的无线连接的建立原因。当所述无线连接的建立原因为Mo-data时，所述接入网节点向所述终端发送所述第二消息，从而跳过为终端建立上下文信息的步骤。相应的，当所述无线连接的建立原因不为Mo-data时，所述接入网节点按照现有技术的方案，为终端建立上下文信息，例如接入网节点向核心网节点发送初始化用户设备消息(Initial UE message)，并接收核心网节点发送的初始化上下文建立请求(Initial Context Setup Request)等步骤，在此不再赘述。
需要说明的是，当无线连接的建立原因为Mo-data时，表示终端是因为需要发送或接收数据而进行服务请求，因此若接入网节点拥有终端的上下文信息，则接入网节点无需与核心网节点进行交互。但当无线连接的建立原因不为MO-data时，则此时终端需要与核心网节点进行交互，例如建立原因为Mo-signalling时，表示终端可能由于移动而触发了追踪区更新过程。此时核心网节点会为终端分配最新的追踪区列表(Tracking area identity List， TAI List)等网络参数，因此接入网节点可以按照现有流程，进行发送初始化用户设备消息等步骤，以完成为终端分配最新的追踪区列表。
通过上述方法，由于接入网节点在接收到第一消息之前，已经保存了终端的上下文信息，因此接入网节点在接收到第一消息之后，可以跳过(或者说，不执行)向核心网节点发送Initial UE message，以及接收核心网节点发送的Initial Context Setup Request等建立终端上下文信息的步骤，直接向终端发送第二消息，从而减少了终端在建立无线连接过程中，接入网节点发送信令的数量，减少了终端从空闲态到连接态的转换时间。
步骤204中，终端接收到第二消息之后，可以根据第二消息中的无线资源的信息，确定接入网节点分配给所述终端的无线资源，并根据无线资源配置用于承载NAS信令的SRB2和用于专有承载在空口部分传输数据的专有DRB等，从而终端完成从空闲态到连接态的转换。
终端还可以根据第二消息向接入网节点发送第三消息，第三消息的具体内容可以根据第二消息的不同而不同，下面分别描述。
其中，第一消息可以为RRC连接请求消息，第二消息可以为RRC连接重配置消息，第三消息可以为RRC连接重配置完成(Connection Reconfiguration Complete)消息；或者，
第一消息可以为RRC连接请求消息，第二消息可以为RRC连接恢复消息，第三消息可以为RRC连接恢复完成(Connection Resume Complete)消息。
如图3所示，为本申请实施例提供的另一种无线连接流程示意图。图3所示的方法可以应用于如下场景：终端处于空闲态，当终端需要传输上行数据时，终端请求建立所述终端与所述接入网节点之间的无线连接。此外，图3所示的方法基于图2所示的方法上，并以第一消息为RRC连接请求消息，第二消息为RRC连接重配置消息，第三消息为RRC连接重配置完成(Connection Reconfiguration Complete)消息为例进行说明。
图3所示的方法具体包括：
步骤301：核心网节点为处于空闲态的终端建立上下文信息。
其中，核心网节点具体如何为终端建立上下文信息，可以参考前面的描述，在此不再赘述。
步骤302：接入网节点从核心网节点接收所述终端的上下文信息。
步骤303：终端向接入网节点发送随机接入前导码(Random Access Preamble)。
其中，该随机接入前导码可以用于发起随机接入过程。
步骤304：接入网节点向终端发送随机接入响应(Random Access Response，RAR)消息。
其中，RAR消息中可以包含为终端分配的小区无线网络临时标识(Cell Radio Network Temporary Identification，C-RNTI)等信息，在此不再赘述。
具体地，接入网节点可以通过下行共享信道(DownLink-Shared Channel，DL-SCH)向终端发送RAR消息。
步骤305：终端向接入网节点发送第一消息，即RRC连接请求消息。
其中，第一消息中可以包括终端的临时移动标识、无线连接的建立原因等信息。
步骤306：接入网节点向终端发送RRC连接建立(Connection Setup)消息。
其中，RRC连接建立消息中可以包含接入网节点基于无线连接的建立原因而为终端分配的SRB、DRB等信息。
具体地，接入网节点可以通过DL-SCH向终端发送该RRC连接建立消息。
步骤307：终端向接入网节点发送RRC连接建立完成(Connection Setup Complete)消息。
其中，RRC连接建立完成消息中可以不包括非接入层(Non-access stratum，NAS)的服务请求(service request)消息。service request消息用于触发核心网节点为终端建立上下文信息，由于核心网节点已经为终端建立了上下文信息，因此该消息可以不再发送。
其中，步骤306-步骤307为可选步骤。
步骤308：接入网节点向终端发送第二消息，即RRC连接重配置消息。
其中，该消息中可以包括根据终端的上下文信息为终端分配的无线资源的信息。
步骤309：终端向接入网节点发送第三消息，即RRC连接重配置完成消息。
上述方案中，接入网节点在终端发送第一消息之前，已经保存了终端的上下文信息，因此接入网节点在接收到第一消息之后，可以跳过(或者说，不执行)向核心网节点发送Initial UE message，以及接收核心网节点发送的Initial Context Setup Request等建立终端上下文信息的步骤，直接向终端发送第二消息，从而减少了终端在建立无线连接过程中，接入网节点发送信令的数量，减少了终端从空闲态到连接态的转换时间。
如图4所示，为本申请实施例提供的另一种无线连接流程示意图。图4所示的方法可以应用于如下场景：终端处于空闲态，当终端需要传输上行数据时，终端请求建立该终端与接入网节点之间的无线连接。此外，图4所示的方法基于图2所示的方法上，并以第一消息为RRC连接请求消息，第二消息为RRC连接恢复消息，第三消息为RRC Connection Resume Complete消息为例进行说明。
图4所示的方法具体包括：
步骤401：核心网节点为处于空闲态的终端建立上下文信息。
其中，核心网节点具体如何为终端建立上下文信息，可以参考前面的描述，在此不再赘述。
步骤402：接入网节点从核心网节点接收所述终端的上下文信息。
步骤403：终端向接入网节点发送随机接入前导码，随机接入前导码用于发起随机接入过程。
步骤404：接入网节点向终端发送RAR消息。
具体地，接入网节点可以通过DL-SCH向终端发送RAR消息
步骤405：终端向接入网节点发送第一消息，即RRC连接请求消息。
其中，第一消息中可以包括终端的临时移动标识等信息。
示例性地，接入网节点接收到第一消息之后，获取与终端的临时移动标识映射的上下文标识，进而根据所述上下文标识获得所述终端的上下文信息，最后根据终端的上下文信息为终端分配无线资源。
步骤406：接入网节点向终端发送第二消息，即RRC连接恢复消息。
其中，该消息中可以包括根据终端的上下文信息为终端分配的无线资源的信息。
其中，第二消息中还可以包括第二指示信息。
步骤407：终端向接入网节点发送第三消息，即RRC连接重配置完成消息。
示例性地，当第二消息中不携带第二指示信息时，终端可以根据第二消息确定接入网节点中已经保存或存储或建立或维护或获取了终端的上下文信息。
和图3所示的方法相比，图4所示的方法中，接入网节点向终端发送的是RRC连接恢复消息，而不是图3中的步骤306中，发送的RRC Connection Setup消息，因此，接入网节点可以通过发送RRC连接恢复消息，隐含地告知终端，接入网节点中已经保存或存储或建立或维护或获取了终端的上下文信息，终端可以向接入网节点发送RRC连接重配置完成消息。
示例性地，当第二消息中携带第二指示信息时，终端可以直接根据第二指示信息确定接入网节点中已经保存或存储或建立或维护或获取了终端的上下文信息。
上述方案中，终端确定接入网节点中已经保存或存储或建立或维护或获取了终端的上下文信息之后，直接向接入网节点发送第三消息，无需通过接入网节点触发核心网节点为终端建立上下文信息，从而节省了终端建立无线连接过程中发送的信令的数量，以及减少了终端从空闲态到连接态的转换时间。
如图5所示，为本申请实施例提供的另一种无线连接流程示意图。图5所示的方法可以应用于如下场景：接入网节点从核心网节点接收所述终端的下行数据，或者接入网节点从核心网节点接收第二寻呼消息。此外，图5所示的方法基于图2所示的方法上，并以第一消息为RRC连接请求消息，第二消息为RRC连接恢复消息，第三消息为RRC连接恢复完成消息为例进行说明。
图5所示的方法具体包括：
步骤501：核心网节点为处于空闲态的终端建立上下文信息。
其中，核心网节点具体如何为终端建立上下文信息，可以参考前面的描述，在此不再赘述。
步骤502：接入网节点从核心网节点接收所述终端的上下文信息。
步骤503：接入网节点从核心网节点接收所述终端的下行数据，并向终端发送第一寻呼消息。
可替换地，步骤503：接入网节点从核心网节点接收第二寻呼消息，并向终端发送第一寻呼消息。
其中，第一寻呼消息中可以包括第二指示信息。
步骤504：终端向接入网节点发送随机接入前导码，随机接入前导码用于发起随机接入过程。
步骤505：接入网节点向终端发送RAR消息。
步骤506：终端向接入网节点发送第一消息，即RRC连接请求消息。
其中，第一消息中可以包括终端的临时移动标识等信息。
示例性地，接入网节点接收到第一消息之后，获取与终端的临时移动标识映射的上下文标识，进而根据所述上下文标识获得所述终端的上下文信息，最后根据终端的上下文信息为终端分配无线资源。
步骤507：接入网节点向终端发送第二消息，即RRC连接恢复消息。
其中，该消息中可以包括根据终端的上下文信息为终端分配的无线资源的信息。
步骤508：终端向接入网节点发送第三消息，即RRC连接重配置完成消息。
示例性地，终端可以直接根据第一寻呼消息中的第二指示信息确定接入网节点中已经保存或存储或建立或维护或获取了终端的上下文信息，从而可以向接入网节点发送RRC连接重配置完成消息。
上述方案中，终端根据第一寻呼消息中的第二指示信息确定接入网节点中已经保存或存储或建立或维护或获取了终端的上下文信息之后，直接向接入网节点发送第三消息，从而不再通过接入网节点触发核心网节点为终端建立上下文信息的步骤，从而节省了终端建立无线连接过程中发送的信令的数量，以及减少了终端从空闲态到连接态的转换时间。
如图6所示，为本申请实施例提供一种接入网节点结构示意图，该接入网节点可执行上述各方法实施例中的接入网节点的动作。可选的，该接入网节点可以为接入网实体等。该接入网节点600包括：接收单元601和发送单元602。
接收单元601，用于从终端接收第一消息，所述第一消息用于请求建立所述终端与所述接入网节点之间的无线连接；
发送单元602，用于根据所述第一消息向所述终端发送第二消息，所述第二消息中包括分配给所述终端的无线资源的信息。
本申请实施例中，在接收到第一消息之后，可以跳过(或者说，不执行)向核心网节点请求为建立终端上下文信息的步骤，直接向终端发送第二消息，从而减少了终端在建立无线连接过程中，接入网节点发送信令的数量，减少了终端从空闲态到连接态的转换时间。
一种可选地实施方案中，接收单元601在从终端接收第一消息之前，还用于：
从核心网节点接收所述终端的上下文信息。通过该方法，在接收到第一消息之前，获取终端的上下文信息，减少了终端从空闲态到连接态的转换时间，提高了系统效率。
一种可选地实施方案中，接收单元601还用于：
从核心网节点接收第一指示信息，所述第一指示信息用于指示所述接入网节点在接收到所述终端的上下文信息后，无需立即为所述终端建立无线连接。通过该方法，接入网节点在接收到终端的上下文信息之后，只是存储终端的上下文信息，并不与终端进行信令交互，而是在终端发起RRC连接或寻呼终端时，接入网节点与终端进行信令交互，为终端建立无线连接，从而减少了终端从空闲态到连接态的转换时间。
一种可选地实施方案中，所述接入网节点600还包括处理单元603；所述第一消息中包括所述终端的临时移动标识；发送单元602在根据所述第一消息向所述终端发送第二消息之前，处理单元603用于：
根据所述终端的临时移动标识，获得所述终端的上下文信息，并根据所述终端的上下文信息为所述终端分配所述无线资源。通过该方法，接入网节点根据终端的临时移动标识，准确、高效的获得所述终端的上下文信息，减少了终端从空闲态到连接态的转换时间，提高为终端建立无线连接的效率。
一种可选地实施方案中，所述第二消息中还包括第二指示信息，所述第二指示信息用于指示所述接入网节点保存了所述终端的上下文信息。通过该方法，接入网节点可以通过第二指示信息向终端指示接入网节点中已经保存或存储或建立或维护或获取了终端的上下文信息，终端从而可以不再通过接入网节点触发核心网节点为终端建立上下文信息的步骤，从而节省了终端建立无线连接过程中发送的信令的数量，以及减少了终端从空闲态到连接态的转换时间。
一种可选地实施方案中，所述第一消息中包括无线连接的建立原因；发送单元602具体用于：
当所述无线连接的建立原因为移动源数据时，向所述终端发送所述第二消息。上述方案中，当所述无线连接的建立原因为移动源数据时，表示终端是因为需要发送或接收数据 而进行服务请求，因此接入网节点中保存了终端的上下文信息时，接入网节点无需与核心网节点进行交互，直接向终端发送第二消息，减少了终端从空闲态到连接态的转换时间。
一种可选地实施方案中，接收单元601在从终端接收第一消息之前，发送单元602还用于：
当从所述核心网节点接收所述终端的下行数据时，向所述终端发送第一寻呼消息；或者，
当从所述核心网节点接收第二寻呼消息时，向所述终端发送第一寻呼消息，所述第二寻呼消息用于指示所述接入网节点寻呼所述终端；
其中，所述第一寻呼消息中包括第二指示信息，所述第二指示信息用于指示所述接入网节点中保存了所述终端的上下文信息。
如图7所示，为本申请实施例提供一种终端结构示意图，该终端可以用于执行上述各方法实施例中终端的动作，该终端700包括：发送单元701和接收单元702。
发送单元701，用于向接入网节点发送第一消息，所述第一消息用于请求建立与所述接入网节点的无线连接；
接收单元702，用于从所述接入网节点接收第二消息，所述第二消息为所述接入网节点根据所述第一消息发送的，所述第二消息中包括分配给所述终端的无线资源的信息。
上述方案中，由于接入网节点在接收到第一消息之后，直接向终端发送第二消息，终端从而可以更快的获得接入网节点分配给终端的无线资源的信息，从而减少了终端从空闲态到连接态的转换时间。
一种可选地实施方案中，所述第一消息为无线资源控制RRC连接请求消息，所述第二消息为RRC连接恢复消息；
发送单元701还用于：
根据所述第二消息向所述接入网节点发送第三消息，所述第三消息为RRC连接恢复完成消息。
一种可选地实施方案中，发送单元701在向所述接入网节点发送第三消息之前，接收单元702还用于：
接收所述接入网节点发送的第一寻呼消息，所述第一寻呼消息中包括第二指示信息，所述第二指示信息用于指示所述接入网节点中保存了所述终端的上下文信息。
上述方案中，终端可以直接根据第一寻呼消息中的第二指示信息确定接入网节点中已经保存或存储或建立或维护或获取了终端的上下文信息，从而可以不需要触发核心网节点建立上下文信息的步骤，从而减少了终端从空闲态到连接态的转换时间。
一种可选地实施方案中，所述第二消息中还包括第二指示信息，所述第二指示信息用于指示所述接入网节点保存了所述终端的上下文信息。
上述方案中，终端可以直接根据第二消息中的第二指示信息确定接入网节点中已经保存或存储或建立或维护或获取了终端的上下文信息，终端从而可以不再通过接入网节点触发核心网节点为终端建立上下文信息的步骤，从而节省了终端建立无线连接过程中发送的信令的数量，以及减少了终端从空闲态到连接态的转换时间。
如图8所示，为本申请实施例提供一种装置的结构示意图。该装置可以是接入网节点，该装置可执行上述各方法实施例中的接入网节点的动作。可选的，该接入网节点可以为接入网实体等。
参见图8，该装置800包括：处理器801、收发机802、存储器803和通信接口804；其中，处理器801、收发机802、存储器803和通信接口804通过总线805相互连接。
处理器801可以是中央处理器(central processing unit，CPU)，网络处理器(network processor，NP)或者CPU和NP的组合。处理器801还可以进一步包括硬件芯片。上述硬件芯片可以是专用集成电路(application-specific integrated circuit，ASIC)，可编程逻辑器件(programmable logic device，PLD)或其组合。上述PLD可以是复杂可编程逻辑器件(complex programmable logic device，CPLD)，现场可编程逻辑门阵列(field-programmable gate array，FPGA)，通用阵列逻辑(generic array logic,GAL)或其任意组合。
存储器803可以包括易失性存储器(volatile memory)，例如随机存取存储器(random-access memory，RAM)；存储器也可以包括非易失性存储器(non-volatile memory)，例如快闪存储器(flash memory)，硬盘(hard disk drive，HDD)或固态硬盘(solid-state drive，SSD)；存储器803还可以包括上述种类的存储器的组合。
通信接口804可以为有线通信接入口，无线通信接口或其组合，其中，有线通信接口例如可以为以太网接口。以太网接口可以是光接口，电接口或其组合。无线通信接口可以为WLAN接口。
总线805可以是外设部件互连标准(peripheral component interconnect，PCI)总线或扩展工业标准结构(extended industry standard architecture，EISA)总线等。总线可以分为地址总线、数据总线、控制总线等。为便于表示，图8中仅用一条双向箭头表示，但并不表示仅有一根总线或一种类型的总线。
存储器803可以用于存储程序指令，处理器801调用该存储器803中存储的程序指令，可以执行上述方案中所示实施例中的一个或多个步骤，或其中可选的实施方式，使得接入网节点800实现上述方法中的功能。
收发机802，用于从终端接收第一消息，所述第一消息用于请求建立所述终端与所述接入网节点之间的无线连接；
处理器801，用于根据所述第一消息确定第二消息，所述第二消息中包括分配给所述终端的无线资源的信息；
收发机802，用于向所述终端发送第二消息。
上述方案中，该装置在接收到第一消息之后，可以跳过(或者说，不执行)向核心网节点请求为建立终端上下文信息的步骤，直接向终端发送第二消息，从而减少了终端在建立无线连接过程中，接入网节点发送信令的数量，减少了终端从空闲态到连接态的转换时间。
一种可选地实施方案中，收发机802在从终端接收第一消息之前，还用于：
从核心网节点接收所述终端的上下文信息。上述方案中，在接收到第一消息之前，获取终端的上下文信息，减少了终端从空闲态到连接态的转换时间，提高了系统效率。
一种可选地实施方案中，收发机802还用于：
从核心网节点接收第一指示信息，所述第一指示信息用于指示所述接入网节点在接收到所述终端的上下文信息后，无需立即为所述终端建立无线连接。上述方案中，在接收到终端的上下文信息之后，只是存储终端的上下文信息，并不与终端进行信令交互，而是在终端发起RRC连接或寻呼终端时，接入网节点与终端进行信令交互，为终端建立无线连接，从而减少了终端从空闲态到连接态的转换时间。
一种可选地实施方案中，所述第一消息中包括所述终端的临时移动标识；
收发机802在根据所述第一消息向所述终端发送第二消息之前，处理器601用于：
根据所述终端的临时移动标识，获得所述终端的上下文信息，并根据所述终端的上下文信息为所述终端分配所述无线资源。上述方案中，根据终端的临时移动标识，可以准确、高效的获得所述终端的上下文信息，减少了终端从空闲态到连接态的转换时间，提高为终端建立无线连接的效率。
一种可选地实施方案中，所述第二消息中还包括第二指示信息，所述第二指示信息用于指示所述接入网节点保存了所述终端的上下文信息。上述方案中，通过第二指示信息向终端指示接入网节点中已经保存了终端的上下文信息，终端从而可以不再通过接入网节点触发核心网节点为终端建立上下文信息的步骤，从而节省了终端建立无线连接过程中发送的信令的数量，以及减少了终端从空闲态到连接态的转换时间。
一种可选地实施方案中，所述第一消息中包括无线连接的建立原因；收发机802具体用于：当所述无线连接的建立原因为移动源数据时，向所述终端发送所述第二消息。上述方案中，当所述无线连接的建立原因为移动源数据时，表示终端是因为需要发送或接收数据而进行服务请求，因此该装置在接收到第一消息之后，无需与核心网节点进行交互，直接向终端发送第二消息，减少了终端从空闲态到连接态的转换时间。
一种可选地实施方案中，收发机802在从终端接收第一消息之前，收发机802还用于：
当从所述核心网节点接收所述终端的下行数据时，向所述终端发送第一寻呼消息；或者，
当从所述核心网节点接收第二寻呼消息时，向所述终端发送第一寻呼消息，所述第二寻呼消息用于指示所述接入网节点寻呼所述终端。
其中，所述第一寻呼消息中包括第二指示信息，所述第二指示信息用于指示所述接入网节点中保存了所述终端的上下文信息。
参见图9，本申请实施例还提供一种装置，该装置可以是终端，可以用于执行上述各方法实施例中终端的动作。该装置900包括：处理器901、收发机902、存储器903和通信接口904；其中，处理器901、收发机902、存储器903和通信接口904通过总线905相互连接，上述模块的具体内容可以参考图8中相关模块的描述，在此不再赘述。
存储器903可以用于存储程序指令，处理器901调用存储器903中存储的程序指令，执行：
通过收发机902，向接入网节点发送第一消息，所述第一消息用于请求建立与所述接入网节点的无线连接；
通过收发机902，从所述接入网节点接收第二消息，所述第二消息为所述接入网节点根据所述第一消息发送的，所述第二消息中包括分配给所述终端的无线资源的信息。
上述方案中，由于接入网节点在接收到第一消息之后，直接向终端发送第二消息，终端从而可以更快的获得接入网节点分配给终端的无线资源的信息，从而减少了终端从空闲态到连接态的转换时间。
一种可选地实施方案中，所述第一消息为无线资源控制RRC连接请求消息，所述第二消息为RRC连接恢复消息；收发机902还用于：
根据所述第二消息向所述接入网节点发送第三消息，所述第三消息为RRC连接恢复完成消息。
一种可选地实施方案中，收发机902在向所述接入网节点发送第三消息之前，收发机902还用于：
接收所述接入网节点发送的第一寻呼消息，所述第一寻呼消息中包括第二指示信息，所述第二指示信息用于指示所述接入网节点中保存了所述终端的上下文信息。
上述方案中，该装置可以直接根据第一寻呼消息中的第二指示信息确定接入网节点中已经保存了终端的上下文信息，从而可以不需要触发核心网节点建立上下文信息的步骤，从而减少了终端从空闲态到连接态的转换时间。
一种可选地实施方案中，所述第二消息中还包括第二指示信息，所述第二指示信息用于指示所述接入网节点保存了所述终端的上下文信息。
上述方案中，终端可以直接根据第二消息中的第二指示信息确定接入网节点中已经保存了终端的上下文信息，终端从而可以不再通过接入网节点触发核心网节点为终端建立上下文信息的步骤，从而节省了终端建立无线连接过程中发送的信令的数量，以及减少了终端从空闲态到连接态的转换时间。
本申请实施例还提供了一种计算机可读存储介质，用于存储上述处理器901执行的计算机软件指令，其包含上述处理器901执行的程序。
本申请实施例还提供了一种计算机可读存储介质，用于存储上述处理器801执行的计算机软件指令，其包含上述处理器801执行的程序。
本申请实施例还提供了一种系统，包括：图8所示的接入网节点和图9所示的终端。
本领域内的技术人员应明白，本申请的实施例可提供为方法、系统、或计算机程序产品。因此，本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、光学存储器等)上实施的计算机程序产品的形式。
本申请是参照根据本申请的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (25)

  1. 一种无线连接方法，其特征在于，所述方法包括：
    接入网节点从终端接收第一消息，所述第一消息用于请求建立所述终端与所述接入网节点之间的无线连接；
    所述接入网节点根据所述第一消息向所述终端发送第二消息，所述第二消息中包括分配给所述终端的无线资源的信息。
  2. 根据权利要求1所述的方法，其特征在于，在所述接入网节点从终端接收第一消息之前，所述方法还包括：
    所述接入网节点从核心网节点接收所述终端的上下文信息。
  3. 根据权利要求2所述的方法，其特征在于，所述方法还包括：
    所述接入网节点从核心网节点接收第一指示信息，所述第一指示信息用于指示所述接入网节点在接收到所述终端的上下文信息后，无需立即为所述终端建立无线连接。
  4. 根据权利要求1至3任一所述的方法，其特征在于，所述第一消息中包括所述终端的临时移动标识；
    在所述接入网节点根据所述第一消息向所述终端发送第二消息之前，所述方法还包括：
    所述接入网节点根据所述终端的临时移动标识，获得所述终端的上下文信息，并根据所述终端的上下文信息为所述终端分配所述无线资源。
  5. 根据权利要求2或3所述的方法，其特征在于，所述第二消息中还包括第二指示信息，所述第二指示信息用于指示所述接入网节点保存了所述终端的上下文信息。
  6. 根据权利要求1至5任一所述的方法，其特征在于，所述第一消息中包括无线连接的建立原因；
    所述接入网节点根据所述第一消息向所述终端发送第二消息，还包括：
    当所述无线连接的建立原因为移动源数据时，所述接入网节点向所述终端发送所述第二消息。
  7. 根据权利要求1至6任一所述的方法，其特征在于，在所述接入网节点从终端接收第一消息之前，所述方法还包括：
    当所述接入网节点从所述核心网节点接收所述终端的下行数据时，所述接入网节点向所述终端发送第一寻呼消息；或者，
    当所述接入网节点从所述核心网节点接收第二寻呼消息时，所述接入网节点向所述终端发送第一寻呼消息，所述第二寻呼消息用于指示所述接入网节点寻呼所述终端；
    其中，所述第一寻呼消息中包括第二指示信息，所述第二指示信息用于指示所述接入网节点中保存了所述终端的上下文信息。
  8. 一种无线连接方法，其特征在于，所述方法包括：
    终端向接入网节点发送第一消息，所述第一消息用于请求建立与所述接入网节点的无线连接；
    所述终端从所述接入网节点接收第二消息，所述第二消息为所述接入网节点根据所述第一消息发送的，所述第二消息中包括分配给所述终端的无线资源的信息。
  9. 根据权利要求8所述的方法，其特征在于，所述第一消息为无线资源控制RRC连接请求消息，所述第二消息为RRC连接恢复消息；
    所述方法还包括：
    所述终端根据所述第二消息向所述接入网节点发送第三消息，所述第三消息为RRC连接恢复完成消息。
  10. 根据权利要求9所述的方法，其特征在于，在所述终端向所述接入网节点发送第三消息之前，还包括：
    所述终端接收所述接入网节点发送的第一寻呼消息，所述第一寻呼消息中包括第二指示信息，所述第二指示信息用于指示所述接入网节点中保存了所述终端的上下文信息。
  11. 根据权利要求8至10任一所述的方法，其特征在于，所述第二消息中还包括第二指示信息，所述第二指示信息用于指示所述接入网节点保存了所述终端的上下文信息。
  12. 一种接入网节点，其特征在于，包括：
    接收单元，用于从终端接收第一消息，所述第一消息用于请求建立所述终端与所述接入网节点之间的无线连接；
    发送单元，用于根据所述第一消息向所述终端发送第二消息，所述第二消息中包括分配给所述终端的无线资源的信息。
  13. 根据权利要求12所述的接入网节点，其特征在于，所述接收单元在从终端接收第一消息之前，还用于：
    从核心网节点接收所述终端的上下文信息。
  14. 根据权利要求13所述的接入网节点，其特征在于，所述接收单元还用于：
    从核心网节点接收第一指示信息，所述第一指示信息用于指示所述接入网节点在接收到所述终端的上下文信息后，无需立即为所述终端建立无线连接。
  15. 根据权利要求12至14任一所述的接入网节点，其特征在于，所述接入网节点还包括处理单元；所述第一消息中包括所述终端的临时移动标识；
    所述发送单元在根据所述第一消息向所述终端发送第二消息之前，所述处理单元用于：
    根据所述终端的临时移动标识，获得所述终端的上下文信息，并根据所述终端的上下文信息为所述终端分配所述无线资源。
  16. 根据权利要求13或14所述的接入网节点，其特征在于，所述第二消息中还包括第二指示信息，所述第二指示信息用于指示所述接入网节点保存了所述终端的上下文信息。
  17. 根据权利要求12至16任一所述的接入网节点，其特征在于，所述第一消息中包括无线连接的建立原因；
    所述发送单元具体用于：
    当所述无线连接的建立原因为移动源数据时，向所述终端发送所述第二消息。
  18. 根据权利要求12至17任一所述的接入网节点，其特征在于，所述接收单元在从终端接收第一消息之前，所述发送单元还用于：
    当从所述核心网节点接收所述终端的下行数据时，向所述终端发送第一寻呼消息；或者，
    当从所述核心网节点接收第二寻呼消息时，向所述终端发送第一寻呼消息，所述第二寻呼消息用于指示所述接入网节点寻呼所述终端；
    其中，所述第一寻呼消息中包括第二指示信息，所述第二指示信息用于指示所述接入网节点中保存了所述终端的上下文信息。
  19. 一种终端，其特征在于，包括：
    发送单元，用于向接入网节点发送第一消息，所述第一消息用于请求建立与所述接入网节点的无线连接；
    接收单元，用于从所述接入网节点接收第二消息，所述第二消息为所述接入网节点根据所述第一消息发送的，所述第二消息中包括分配给所述终端的无线资源的信息。
  20. 根据权利要求19所述的终端，其特征在于，所述第一消息为无线资源控制RRC连接请求消息，所述第二消息为RRC连接恢复消息；
    所述发送单元还用于：
    根据所述第二消息向所述接入网节点发送第三消息，所述第三消息为RRC连接恢复完成消息。
  21. 根据权利要求20所述的终端，其特征在于，所述发送单元在向所述接入网节点发送第三消息之前，所述接收单元还用于：
    接收所述接入网节点发送的第一寻呼消息，所述第一寻呼消息中包括第二指示信息，所述第二指示信息用于指示所述接入网节点中保存了所述终端的上下文信息。
  22. 根据权利要求19至21任一所述的终端，其特征在于，所述第二消息中还包括第二指示信息，所述第二指示信息用于指示所述接入网节点保存了所述终端的上下文信息。
  23. 一种计算机可读存储介质，其特征在于，所述计算机存储介质中存储有计算机可读指令，当计算机读取并执行所述计算机可读指令时，使得计算机执行如权利要求1-11任意一项所述的方法。
  24. 一种计算机程序产品，其特征在于，当计算机读取并执行所述计算机程序产品时，使得计算机执行如权利要求1-11任意一项所述的方法。
  25. 一种芯片，其特征在于，所述芯片与存储器相连，用于读取并执行所述存储器中存储的软件程序，以实现如权利要求1-11任意一项所述的方法。
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