WO2018058437A1 - 一种通信方法、设备和系统 - Google Patents

一种通信方法、设备和系统 Download PDF

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Publication number
WO2018058437A1
WO2018058437A1 PCT/CN2016/100828 CN2016100828W WO2018058437A1 WO 2018058437 A1 WO2018058437 A1 WO 2018058437A1 CN 2016100828 W CN2016100828 W CN 2016100828W WO 2018058437 A1 WO2018058437 A1 WO 2018058437A1
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WO
WIPO (PCT)
Prior art keywords
network device
access network
terminal
signaling
message
Prior art date
Application number
PCT/CN2016/100828
Other languages
English (en)
French (fr)
Inventor
杜君
李秉肇
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to PCT/CN2016/100828 priority Critical patent/WO2018058437A1/zh
Priority to JP2019517035A priority patent/JP6821798B2/ja
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to AU2016424317A priority patent/AU2016424317B2/en
Priority to CN201680089704.8A priority patent/CN109792707B/zh
Priority to BR112019005966A priority patent/BR112019005966A2/pt
Priority to EP16917191.5A priority patent/EP3506689B1/en
Priority to CN202110835817.0A priority patent/CN113727328B/zh
Priority to CN201910802707.7A priority patent/CN110636608B/zh
Priority to CN202110835639.1A priority patent/CN113727327A/zh
Priority to EP20190112.1A priority patent/EP3799489A1/en
Publication of WO2018058437A1 publication Critical patent/WO2018058437A1/zh
Priority to US16/361,224 priority patent/US10455541B2/en
Priority to ZA2019/01832A priority patent/ZA201901832B/en
Priority to US16/587,034 priority patent/US11412477B2/en
Priority to AU2020277096A priority patent/AU2020277096B2/en
Priority to US17/882,383 priority patent/US11832215B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/005—Transmission of information for alerting of incoming communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/02—Arrangements for increasing efficiency of notification or paging channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08—Mobility data transfer
    • H04W8/14—Mobility data transfer between corresponding nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0033—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/029—Location-based management or tracking services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/30—Connection release
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H04W60/04—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration using triggered events
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H04W60/06—De-registration or detaching
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/10—User notification, e.g. alerting and paging, for incoming communication, change of service or the like using simulcast notification
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a communication method, device, and system.
  • a terminal can access a core network (Core Network, CN) through a Radio Access Network (RAN).
  • Core Network Core Network
  • RAN Radio Access Network
  • the terminal can access the core network device in the CN through an access network device in the RAN.
  • the core network device can send signaling to the terminal through the access network device, and receive a corresponding reply.
  • the terminal moves out of the range of the access network device, the terminal does not receive the signaling of the core network device, thereby causing reasonable subsequent processing.
  • the embodiment of the invention describes a communication method for solving the problem that reasonable subsequent processing cannot be performed if the terminal does not receive the signaling of the core network device.
  • an embodiment of the present invention provides a communication method, where the method is used in a communication system, where the communication system includes a paging area, where the paging area includes at least a first access network device and a second access network device, An access network device and a core network device have a link, the method includes: the first access network device receives signaling of the terminal from the core network device; and the first access network device sends the first search to the second access network device Calling a message, the first paging message is used for paging the terminal; the second access network device sends a second paging message to the terminal; the second access network device receives the paging response from the terminal; and the second access network device The first access network device sends the first indication information, where the first indication information is used to indicate that the terminal accesses the second access network device.
  • the first access network device after receiving the signaling of the terminal sent by the core network device, the first access network device sends a first paging message to the second access network device, and receives the second access network device to send
  • the terminal can be informed that the terminal has accessed the second access network device, so that reasonable subsequent processing is performed.
  • the paging area includes at least a first access network device and a second access network device, where the paging area includes a first access network device and a second access network device, or the paging area may be Package In addition to the first access network device and the second access network device, other access network devices are also included.
  • the paging area including the first access network device and the second access network device refers to: part or all of the cells of the first access network device, and part or all of the cells of the second access network device belong to the paging area .
  • the foregoing signaling may include at least one of the following: non-access stratum NAS signaling, radio bearer management signaling, terminal context modification signaling, terminal context deletion signaling, location reporting signaling, tracking signaling, or location service LCS signaling.
  • the first access network device may receive a context modification command from the core network device, and send an RRC reconfiguration command to the terminal according to the context modification command to modify the context of the terminal; for example, the first access network device may After receiving the NAS signaling from the core network device, the NAS signaling is forwarded to the terminal.
  • the first access network device may send the first paging message to the second access network device when the paging response of the terminal is not received.
  • the first access network device may receive the terminal information indication message from the second access network device, where the terminal information indication message carries the first indication information; or the first access network device may be connected from the second The network access device receives the terminal context request message, and the terminal context request message carries the first indication information.
  • the first access network device may further send the second indication information to the core network device, where the second indication information is used to indicate that the terminal has moved out of the range of the first access network device.
  • the first access network device may send the signaling response message to the core network device, where the response message carries the second indication information; for example, the first access network device may send a signaling failure message to the core network device, The signaling failure message carries the second indication information, where the signaling failure message is used to indicate that the signaling is not successfully sent.
  • the second indication information may include one or all of information of the second access network device and status information of the terminal.
  • the status information is used to indicate the status of the terminal.
  • the state of the terminal may be: when the terminal moves within the paging area, the interface of the terminal and the core network device remains in the first access network device; for example, the state of the terminal may be: the terminal can maintain The connection context is performed, and the mobility of the cell reselection is performed; for example, the state in which the terminal is located may be a lightly connected state, wherein the lightly connected state may be referred to as an inactive state, a deactivated state, a low active state, or a low overhead state. Wait.
  • the second access network device may further receive the signaling of the terminal from the core network device.
  • the second access network device may further send a path switch request to the core network device.
  • the first access network device may also send the signaling to the second access network device.
  • the first access network device may send a context transfer message to the second access network device, the context transfer message carrying the signaling.
  • the first access network device may further receive a first signaling processing indication from the second access network device, where the first signaling processing indication is used to indicate that the signaling processing is successful or the signaling is Processing failed.
  • the first access network device may receive a context delivery acknowledgement message from the second access network device, the context delivery acknowledgement message carrying the first signaling processing indication.
  • the first access network device may further send a second signaling processing indication to the core network device, where the second signaling processing indication is used to indicate that the signaling processing is successful or the signaling processing fails.
  • the second access network device may also send the above signaling to the terminal.
  • an embodiment of the present invention provides a communication method, where the method is used in a communication system, where the communication system includes a paging area, where the paging area includes at least a first access network device and a second access network device.
  • the first access network device has a link with the core network device, and the method includes: the core network device sends the signaling of the terminal to the first access network device; the core network device receives the second indication information from the first access network device, The second indication information is used to indicate that the terminal has moved out of the range of the first access network device; the core network device sends the foregoing signaling to the second access network device.
  • the second indication information can be received from the first access network device, and the device can learn that the terminal has moved out of the first access network device. Range and send the above signaling to the second access network device for reasonable subsequent processing.
  • the paging area includes at least a first access network device and a second access network device, where the paging area includes a first access network device and a second access network device, or the paging area may be In addition to the first access network device and the second access network device, other access network devices are also included.
  • the paging area including the first access network device and the second access network device refers to: part or all of the cells of the first access network device, and part or all of the cells of the second access network device belong to the paging area .
  • the foregoing signaling may include at least one of the following: non-access stratum NAS signaling, radio bearer management signaling, terminal context modification signaling, terminal context deletion signaling, location reporting signaling, tracking signaling, or location service LCS signaling. .
  • the core network device may receive the foregoing signaling response message from the first access network device, where the response message carries the second indication information; or the core network device may receive the information from the first access network device.
  • the failure message, the signaling failure message carries the second indication information, and The signaling failure message is used to indicate that the signaling is not successfully sent.
  • the second indication information may include one or all of information of the second access network device and status information of the terminal.
  • the status information is used to indicate the status of the terminal.
  • the state of the terminal may be: when the terminal moves within the paging area, the interface of the terminal and the core network device remains in the first access network device; for example, the state of the terminal may be: the terminal can maintain The connection context is performed, and the mobility of the cell reselection is performed; for example, the state in which the terminal is located may be a light connection state.
  • the core network device may further send the signaling to the second access network device.
  • the core network device may send the signaling to the second access network device according to the information of the second access network device; for example, after receiving the path switching request sent by the second access network device, the core network device may The second access network device sends the signaling.
  • an embodiment of the present invention provides a first access network device, where the first access network device has a function of implementing behavior of a first access network device in the foregoing method example.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the first access network device includes a processor configured to support the first access network device to perform a corresponding function in the above method. Further, the first access network device may further include a communication interface, where the communication interface is used to support communication between the first access network device and the second access network device or the core network device. Further, the first access network device may further include a memory for coupling with the processor, which stores necessary program instructions and data of the first access network device.
  • an embodiment of the present invention provides a second access network device, where the second access network device has a function of implementing behavior of a second access network device in the foregoing method example.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the second access network device includes a processor configured to support the second access network device to perform a corresponding function in the above method. Further, the second access network device may further include a communication interface, a transmitter, and a receiver, where the communication interface is configured to support communication between the second access network device and the first access network or the core network device, where the transmitting And receiver for support Communication between the second access network device and the terminal. Further, the second access network device may further include a memory for coupling with the processor, which stores necessary program instructions and data of the second access network device.
  • an embodiment of the present invention provides a core network device, where the core network device has a function of implementing a behavior of a core network device in the foregoing method example.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the core network device includes a processor configured to support the core network device to perform the corresponding functions of the above methods. Further, the core network device may further include a communication interface, where the communication interface is used to support communication between the core network device and the first access network device or the second access network device. Further, the core network device may further include a memory for coupling with the processor, which stores necessary program instructions and data of the core network device.
  • the embodiment of the present invention provides a communication system, where the system includes the first access network device and the second access network device, and the system includes the first access in the foregoing aspect.
  • Network device, second access network device, and core network device are included in the foregoing aspect.
  • an embodiment of the present invention provides a computer storage medium for storing the computer software instructions for use in the first access network device, including a program designed to perform the above aspects.
  • an embodiment of the present invention provides a computer storage medium for storing the computer software instructions for the second access network device, including a program designed to perform the above aspects.
  • an embodiment of the present invention provides a computer storage medium for storing the above-mentioned computer software instructions for a core network device, including a program designed to perform the above aspects.
  • the first access network device after receiving the signaling of the terminal sent by the core network device, the first access network device sends a first paging message to the second access network device, when When receiving the first indication message sent by the second access network device, the terminal can access the second access network device, so as to perform reasonable subsequent processing.
  • FIG. 1 is a schematic diagram of a possible application scenario according to an embodiment of the present disclosure
  • FIG. 2 is a schematic diagram of a possible network architecture according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of communication of a communication method according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of communication of another communication method according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of communication of another communication method according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of communication of another communication method according to an embodiment of the present invention.
  • FIG. 7 is a schematic block diagram of a first access network device according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic block diagram of a second access network device according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of an access network device according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic block diagram of a core network device according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic structural diagram of a core network device according to an embodiment of the present disclosure.
  • FIG. 12 is a schematic block diagram of a terminal according to an embodiment of the present disclosure.
  • FIG. 13 is a schematic structural diagram of a terminal according to an embodiment of the present invention.
  • the network architecture and the service scenario described in the embodiments of the present invention are used to more clearly illustrate the technical solutions of the embodiments of the present invention, and do not constitute a limitation of the technical solutions provided by the embodiments of the present invention.
  • the technical solutions provided by the embodiments of the present invention are equally applicable to similar technical problems.
  • FIG. 1 shows an application scenario that may be applicable to an embodiment of the present invention.
  • the terminal accesses an operator's Internet Protocol (IP) service network through a radio access network and a core network, such as an IP Multimedia System (IMS) network and a packet switching network. Packet Switched Streaming Service (JPS) network.
  • IP Internet Protocol
  • IMS IP Multimedia System
  • JPS Packet Switched Streaming Service
  • LTE Long Term Evolution
  • CDMA Code Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • TDMA Time Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single Carrier Frequency Division Multiple Access
  • SC-FDMA Single Carrier Frequency Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • SC-FDMA Single Carrier Frequency Division Multiple Access
  • SC-FDMA Single Carrier Frequency Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • TDMA Time Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single Carrier Frequency Division Multiple Access
  • SC-FDMA Single Carrier Frequency Division Multiple Access
  • FIG. 2 illustrates a possible network architecture provided by an embodiment of the present invention.
  • the network architecture includes: a core network device, a terminal, and multiple access network devices.
  • the access network device 101 and the access network device 102 are in the same paging area, such as the first paging area; the access network device 103 is in another paging area, such as the second paging area.
  • the access network device 101 may be referred to as an anchor access network device of the first paging area.
  • An anchor access network device refers to an access network device that stores context information of a terminal device and maintains a connection between the terminal and the core network device, and is connected to the core network device and is connected to other accesses in the first paging area.
  • terminal 201 is in a lightly connected state.
  • the interface between the terminal and the core network device is kept at the anchor access network device, and the terminal does not need to notify the anchor access network device to move in a certain area, and the notification is not notified when the mobile area is moved out of the certain area.
  • the anchor accesses the network device.
  • the terminal 201 can maintain the interface between the terminal 201 and the core network device through the access network device 101 in the first paging area, and the terminal 201 does not need to notify the access network device 101 when moving in the first paging area.
  • the access network device 101 is notified.
  • the light connection state according to the embodiment of the present invention may be a sub-state of a Radio Resource Control (RRC) connection state, an enhanced state of an idle state, or an independent state.
  • RRC Radio Resource Control
  • the above light connection state may also have other names, for example,
  • the light connection state may also be referred to as an inactive state, a deactivated state, a low active state, or a low overhead state.
  • the embodiment of the present invention does not limit the name or form of the light connection state. For convenience of description, the light state can be described below using the first state.
  • the paging area involved in the embodiment of the present invention may be a name of a cell set, and the cell set is managed by the access network device.
  • the access network device When the terminal moves in the cell set, there is no need to notify the access network device that configures the paging area for the terminal; when the terminal moves out of the cell set, the access network device needs to be notified.
  • the access network device in the cell set needs to communicate with the terminal device, the terminal needs to be paged in all cells included in the cell set.
  • the paging area may also be referred to as a registration area of the terminal, a light connection area of the terminal, a management area of the terminal, an access network registration area of the terminal, a tracking area of the terminal, or an access network tracking area of the terminal.
  • the embodiment of the invention is not limited.
  • the terminal involved in the embodiments of the present invention may include various handheld devices, in-vehicle devices, wearable devices, computing devices, or other processing devices connected to the wireless modem, and various forms of user equipment (User Equipment). , UE), mobile station (MS), terminal device, and the like.
  • User Equipment User Equipment
  • UE user equipment
  • MS mobile station
  • terminal device and the like.
  • An access network device is a device deployed in a radio access network to provide a wireless communication function for a terminal.
  • the access network device may be a base station (BS), and the base station may include various forms of macro base stations, micro base stations, relay stations, access points, and the like.
  • the name of a device with a base station function may be different, for example, in a Long Term Evolution (LTE) system, called an evolved Node B (eNB).
  • eNB evolved Node B
  • eNodeB in a 3rd generation (3G) communication system, called a Node B (Node B) or the like.
  • LTE Long Term Evolution
  • eNB evolved Node B
  • 3G 3rd generation
  • Node B Node B
  • the foregoing apparatus for providing a wireless communication function for a terminal is collectively referred to as an access network device.
  • the core network device involved in the embodiments of the present invention may include different devices in different systems.
  • a core network device may include a Mobility Management Entity (MME) or a Serving Gateway (SGW), and the core network device may include a serving GPRS support node (Serving) in the 3G communication system.
  • MME Mobility Management Entity
  • SGW Serving Gateway
  • GPRS support node Serving GPRS support node
  • SGSN GPRS Support Node
  • GGSN Gateway GPRS support Node
  • GPRS is a general packet radio system (General Packet Radio) Abbreviation for System).
  • the core network device involved in the embodiments of the present invention may further include a 5G system or a core network device in other systems that may appear in the future.
  • the terminal accesses the core network device through a certain access network device, if the terminal moves out of the range of the access network device (for example, the terminal in the handover process has not accessed the switched device)
  • the access network device, or the terminal in the light connection state moves to the range of other access network devices in the same paging area, the terminal does not receive the signaling of the core network device, and thus the reasonable subsequent processing cannot be performed.
  • embodiments of the present invention provide a communication method, and an apparatus and system based on the method.
  • the method is used in a communication system, the communication system includes a paging area, and the paging area includes at least a first access network device and a second access network device, and the first access network device and the core network device have a chain
  • the method includes: the first access network device receives signaling of the terminal from the core network device; the first access network device sends a first paging message to the second access network device, where the first paging message is used.
  • the second access network device sends a second paging message to the terminal; the second access network device receives the paging response from the terminal; and the second access network device sends the first indication information to the first access network device
  • the first indication information is used to indicate that the terminal accesses the second access network device.
  • the first access network device after receiving the signaling of the terminal sent by the core network device, the first access network device sends a first paging message to the second access network device, and receives the second access network device to send
  • the first indication information is obtained, it can be known that the terminal has accessed the second access network device, so that reasonable subsequent processing is performed.
  • the second access network device may be any access network device except the first access network device in the paging area.
  • the paging area includes at least a first access network device and a second access network device, and the paging area may include a first access network device and a second access network device;
  • the paging area includes other access network devices in addition to the first access network device and the second access network device.
  • the paging area including the first access network device and the second access network device refers to: part or all of the cells of the first access network device, and part or all of the cells of the second access network device belong to the paging area .
  • the solution provided by the embodiment of the present invention will be described below with reference to FIG.
  • the method shown in FIG. 3 is used in a communication system, the communication system includes a paging area, and the paging area includes at least a first
  • the access network device and the second access network device have a link between the first access network device and the core network device, and the method includes: parts 301 to 305.
  • the core network device sends signaling to the first access network device.
  • the signaling is signaling of the terminal.
  • the signaling may include at least one of: Non-Access Stratum (NAS) signaling, radio bearer management signaling, terminal context modification signaling, terminal context deletion signaling, location reporting Signaling, tracking signaling or Location Service (LCS) signaling.
  • NAS Non-Access Stratum
  • the radio bearer management signaling may include at least one of radio bearer setup signaling, radio bearer modification signaling, or radio bearer deletion signaling.
  • the first access network device after receiving the signaling of the terminal from the core network device, the first access network device needs to send signaling to the terminal. For example, after receiving the context modification command from the core network device, the first access network device may send an RRC reconfiguration command to the terminal according to the context modification command to modify the context of the terminal; for example, the first access network device After receiving the NAS signaling, the core network device may forward the NAS signaling to the terminal. Before the first access network device sends the signaling to the terminal, the first access network device only knows that the terminal is in the paging area. Therefore, the first access network device needs to initiate paging to the terminal in the paging area. So that the terminal and the network establish a connection. For example, the first access network device may directly initiate paging to the terminal, or may trigger the second access network device to initiate paging to the terminal.
  • the first access network device sends a first paging message to the second access network device, where the first paging message is used to page the terminal.
  • the first access network device may send the first paging message to the second access network device when the paging response of the terminal is not received. For example, after receiving the foregoing signaling from the core network device, the first access network device may first send a third paging message to the terminal, and when the paging response of the terminal is not received within a period of time, to the second access network. The device sends a first paging message.
  • the terminal before receiving the third paging message sent by the first access network device, the terminal may further receive configuration information sent by the first access network device, where the configuration information is used by the terminal to enter the first state.
  • the implementation of the optional part is similar to the 701 part of FIG. 7 . For details, refer to the detailed description of section 701, which is not described herein.
  • the second access network device sends a second paging message to the terminal.
  • the terminal receives the second paging message sent by the second access network device. Before, the configuration information sent by the first access network device is received, and the configuration information is used by the terminal to enter the first state.
  • the case of this example is similar to the 701 part of FIG. 7 , and the detailed description of section 701 can be referred to, and details are not described herein.
  • the second access network device receives a paging response from the terminal.
  • the second access network device may receive a location update message, an RRC connection recovery request message, an RRC connection reestablishment message or an RRC connection continuation message, a location update message, an RRC connection recovery request message, an RRC connection reestablishment message, or The RRC Connection Continue message carries the paging response.
  • the second access network device may determine, according to the paging response, that the terminal is currently in the range of the second access network device.
  • the second access network device sends the first indication information to the first access network device, where the first indication information is used to indicate that the terminal accesses the second access network device.
  • the second access network device may send the first indication information to the first access network device according to the paging response sent by the terminal.
  • the first indication information can include an identification of the terminal.
  • the second access network device may send a terminal information indication message to the first access network device, where the terminal information indication message carries the first indication information; or the second access network device may go to the first access network device.
  • the device sends a terminal context request message, and the terminal context request message carries the first indication information.
  • the first access network device may determine, according to the foregoing terminal information indication message or the terminal context request message, that the terminal is currently in the range of the second access network device.
  • the terminal information indication message or the terminal context request message may further carry a data indication of the terminal, where the data indication is used to indicate whether the terminal has data to be sent.
  • the method shown in FIG. 3 may further include a 306 part and a 307 part; or, the method described in FIG. 3 may further include a 308 part.
  • the first access network device sends the second indication information to the core network device, where the second indication information is used to indicate that the terminal has moved out of the range of the first access network device.
  • the first access network device may send the foregoing signaling response message to the core network device, where the response message carries the second indication information; or the first access network device may send the signaling failure to the core network device.
  • the message, the signaling failure message carries the second indication information, where the signaling failure message is used to indicate that the signaling is not successfully sent.
  • the second indication information may include information of the second access network device or status information of the terminal, where the status information of the terminal is used to indicate the status of the terminal.
  • the state may be: when the terminal moves within the paging area, the interface of the terminal with the core network device remains at the first access network device.
  • the state of the terminal may be: the terminal saves the connection context and performs mobility of cell reselection.
  • the state in which the terminal is located may be a light connection state.
  • the core network device sends the signaling to the second access network device.
  • the path switching request may also be sent to the core network device.
  • the core network device may send the signaling to the second access network device according to the information of the second access network device.
  • the core network device can determine, according to the information of the second access network device, that the terminal has moved to the second access network device, and therefore can directly send the signaling to the second access network device.
  • the core network device may further receive the path switch request from the second access network device before the core network device sends the signaling to the second access network device.
  • the core network device can determine the state of the terminal according to the state information of the terminal, and send the signaling to the second access network device after receiving the path switching request sent by the second access network device.
  • the second access network device can also send the signaling to the terminal.
  • the core network device can learn that the terminal has moved out of the range of the first access network device, and to the second access network device.
  • the signaling of the terminal is sent, so that the signaling of the core network device is successfully sent for reasonable subsequent processing.
  • the first access network device transmits the signaling to the second access network device.
  • the first access network device can transmit a context transfer message to the second access network device, the context transfer message carrying the signaling.
  • the first access network device may further receive a first signaling processing indication from the second access network device, where the first signaling processing indication is used to indicate that the signaling processing is successful or the signaling processing fails. Further, the first access network device may further send a second signaling processing indication to the core network device, where the second signaling processing indication is used to indicate that the signaling processing is successful or the signaling processing fails.
  • the first access network device may receive a context delivery acknowledgement message from the second access network device, where the context delivery acknowledgement message carries the first signaling processing indication.
  • the second access network device can also send the signaling to the terminal.
  • the signaling may be sent to the second access network device to enable the second access.
  • the network device sends the signaling to the terminal, so that the signaling of the core network device is successfully sent for reasonable subsequent processing.
  • the core network device sends signaling to the first access network device.
  • the signaling is signaling of the terminal.
  • section 301 of FIG. 3 For details about the signaling, refer to the detailed description of section 301 of FIG. 3, which is not described herein.
  • the first access network device sends a third paging message to the terminal.
  • the terminal before receiving the third paging message sent by the first access network device, the terminal may further receive configuration information sent by the first access network device, where the configuration information is used by the terminal to enter the first state.
  • the case of this example is similar to the 701 part of FIG. 7 , and the detailed description of section 701 can be referred to, and details are not described herein.
  • the terminal sends a second paging response to the first access network device.
  • the first access network device sends a signaling success message to the core network device.
  • the first access network device may further initiate a reconfiguration process to the terminal according to the foregoing signaling.
  • the above 403 part and 404 part are optional parts. If the 403 part and the 404 part are executed, the method shown in FIG. 4 ends, and the parts 405-411 are not executed. It can be understood that if the 405 part and the 406 part have been executed before the execution of the 403 part, since the terminal has sent the second paging response to the first access network device in the 403 part, generally no second access is performed. The network device sends the first paging response, and after performing the 403 part and the 404 part, the parts 407-411 are no longer executed.
  • the first access network device sends a first paging message to the second access network device, the first paging message being used to page the terminal.
  • the second access network device sends a second paging message to the terminal.
  • the terminal may further receive configuration information sent by the first access network device, where the configuration information is used by the terminal to enter the first state.
  • the case of this example is similar to the 701 part of FIG. 7 , and the detailed description of section 701 can be referred to, and details are not described herein.
  • the terminal sends a first paging response to the second access network device.
  • Parts 408 and 409 are similar to parts 305 and 306 of FIG. 3, respectively, and reference may be made to the detailed descriptions of parts 305 and 306, which are not described herein.
  • the second access network device sends a path switch request to the core network device.
  • part 410 is an optional part.
  • the 410 part may or may not be performed; and when the second indication information includes the status information of the terminal, the 410 part is performed.
  • the portion 411 is similar to the portion 307 of FIG. 3, and reference may be made to the detailed description of section 307, which is not described herein.
  • the first access network device after receiving the signaling of the terminal from the core network device, the first access network device sends a paging message to the terminal and the second access network device respectively. If the first access network device receives the paging response from the terminal, the signaling success message is sent to the core network device. If the first access network device receives the first indication information from the second access network device, the second indication information is sent to the core network device; after receiving the second indication information, the core network device can learn that the terminal has moved out of the first Accessing the range of the network device and transmitting the signaling to the second access network device. In either case, the signaling of the core network device can be successfully sent for reasonable subsequent processing.
  • the sections 501 to 507 are similar to the sections 401 to 407 of FIG. 4, and the detailed descriptions of the sections 401 to 407 can be referred to, and are not described herein.
  • Sections 508 and 509 are similar to sections 305 and 308 of Figure 3, respectively, and reference is made to the detailed description of Sections 305 and 308, which are not described herein.
  • the first access network device after receiving the signaling of the terminal from the core network device, the first access network device sends a paging message to the terminal and the second access network device respectively. If the first access network device receives from the terminal The paging response sends a signaling success message to the core network device. And if the first access network device receives the indication information from the second access network device, sending the signaling to the second access network device. In either case, the signaling of the core network device can be successfully sent for reasonable subsequent processing.
  • Embodiments of the present invention also provide a communication method, and an apparatus and system based on the method.
  • the method includes: the terminal receives the configuration information from the first access network device; the terminal enters the first state according to the configuration information; the terminal sends a message to the second access network device, where the message carries the first terminal identifier; and the second access network device And transmitting, by the first access network device, the first terminal identifier to the first access network device, where the first access network device sends the context or terminal suspension indication of the terminal to the second access network device according to the first terminal identifier.
  • the terminal can send its own identifier to the second access network device, so that the second access network device is connected from the first access network device.
  • the network device receives the context of the terminal or the terminal suspension indication.
  • the terminal receives configuration information from the first access network device.
  • the configuration information includes status indication information, and the terminal can enter the first status according to the status indication information.
  • the configuration information may include one or both of a paging zone identification and a paging zone parameter, and the terminal may enter the first state according to one or both of the paging zone identification and the paging zone parameter.
  • the paging area identification and paging area parameters are briefly described below.
  • the paging area identifier is used to identify a serving cell in the range of the first access network device, and the terminal may determine, according to the paging area identifier, a paging area when the terminal is in the first state. For example, if the paging area identifier of the current serving cell of the first access network device is 1, the paging area when the terminal is in the first state is paging area 1; if the terminal is in the first access network device The paging area identifier of the current serving cell is 2, and the paging area when the terminal is in the first state is paging area 2; and so on.
  • the specific form of the paging area identifier may have other implementations, which are not limited in the embodiment of the present invention.
  • the paging zone parameter is used to determine paging zone information when the terminal is in the first state.
  • the paging area parameter may include a paging area cell list, and the paging area cell list includes at least one cell, and the terminal may use the cell in the paging area cell list as the paging area of the terminal; for example, the paging area parameter.
  • the paging area identifier list includes at least one paging area identifier, and the terminal may use the cell corresponding to the paging area identifier included in the paging area identifier list as the terminal. Paging area.
  • the configuration information may further include a first terminal identifier, where the first terminal identifier may be an identifier used by the terminal in the current network.
  • the terminal can save the first terminal identifier.
  • the configuration information may further include a first terminal identifier and a second terminal identifier.
  • the first terminal identifier is an identifier used by the terminal in the first standard network
  • the second terminal identifier is the terminal identifier.
  • the identifier used in the two-standard network For example, when the terminal is in the first-standard network, the terminal may use the first terminal identifier to perform paging monitoring in the paging area of the first-standard network.
  • the terminal when the terminal is in the second-standard network, the terminal can use the second terminal identifier to perform paging monitoring in the paging area of the second-standard network.
  • the first standard network and the second standard network use different radio access technologies.
  • the first standard network adopts a first access technology
  • the second standard network adopts a second access technology
  • the foregoing first-standard network may be an LTE network or a 5G network
  • the second-standard network may be any standard network different from the first-standard network.
  • the paging area cell list may include at least two cells of different standard networks; or the paging area identifier list may include at least two paging area identifiers, and the two paging area identifiers respectively correspond to different The cell of the standard network.
  • the terminal enters the first state.
  • the interface between the terminal in the first state and the core network device is maintained in the first access network device, and the terminal does not notify the first access network device to move in the paging area.
  • the first access network device is notified when the terminal moves out of the paging area.
  • the terminal may further determine paging area information when the terminal is in the first state according to the paging parameter.
  • the terminal sends a message carrying the first terminal identifier to the second access network device.
  • the message carrying the identifier of the first terminal is referred to as a first message.
  • the first message may be used to notify the second access network device to use the first terminal identifier of the terminal.
  • the first message may be an RRC connection recovery request message, an RRC connection reestablishment message, a location update message, or an RRC connection continuation message.
  • the terminal may send a first message to the second access network device upon entering the range of the second access network device.
  • the terminal sends a first message to the second access network device upon receiving the page sent by the second access network device.
  • the second access network device is in the paging area of the terminal, and the terminal listens to the paging message sent by the cell of the second access network device.
  • the terminal receives the paging message for the terminal, the terminal connects to the second terminal.
  • the network device sends the first message.
  • the first message may also carry a paging response of the terminal.
  • the terminal may use the first terminal identifier to monitor the paging message, and if the paging message carries the first terminal identifier, the terminal determines to be paged by the second access network device.
  • the foregoing configuration information further includes a second terminal identifier.
  • the first terminal identity and the second terminal identity are the identifiers used by the terminal in the first mode network and the second mode network, respectively.
  • the first access network device and the second access network device may adopt the same or different access technologies, for example, the first access network device adopts a first access technology, and the second access network device may adopt The first access technology or the second access technology.
  • the first access network device sends the first terminal identifier to the second access network device; correspondingly, currently resides in the second access
  • the terminal in the network access device uses the first terminal identifier to listen to the paging message.
  • the terminal determines that the terminal is paged by the second access network device.
  • the first access network device sends the second terminal identifier to the second access network device; correspondingly, currently resides in the second The terminal in the access network device uses the second terminal identifier to listen to the paging message.
  • the terminal determines that the terminal is paged by the second access network device.
  • the first message may also carry access technology type information, where the access technology type information is used to notify the second access network device: the first access network device used by the terminal to allocate the first terminal identifier.
  • the wireless access technology is the first access technology; or the technical type information is used to notify the second access network device: the first access network device that allocates the first terminal identifier to the terminal and the second access network device.
  • the wireless access technologies used are different access technologies.
  • the first message may further carry information indicating that the terminal is in the first state, and the second access network device may determine the state of the terminal according to the information.
  • the first message may further carry a sending indication, where the sending indication is used to indicate whether the terminal has data and/or signaling needs to be sent, and the second access network device may be configured according to the sending indication. Determine if the terminal has data and/or signaling to send.
  • the first message may further carry a paging area update indication
  • the second access network device may determine, according to the paging area update indication, that the terminal has moved out of the paging area.
  • the second access network device manages multiple cells, some of the multiple cells belong to the paging area, and another part of the cells does not belong to the paging area, and when the terminal moves to not belong to the paging area, The terminal may send a paging area update indication to the second access network device by using the first message, so that the second access network device may determine, according to the paging area update indication, that the terminal has moved out of the paging. region.
  • the terminal may further receive a connection establishment indication sent by the second access network device.
  • the terminal may send the tracking area to the core network device according to the connection establishment indication. Update the command.
  • the second access network device may determine that there is no interface between the second access network device and the first access network device, and send a connection establishment indication to the terminal, to indicate that the terminal is re-established. connection.
  • the terminal may clear the saved connection context to re-establish the connection according to the connection establishment indication, and then send a tracking area update command to the core network device by using the re-established connection, so that the core network device releases the first access network according to the tracking area update command.
  • the connection to the core network device may clear the saved connection context to re-establish the connection according to the connection establishment indication, and then send a tracking area update command to the core network device by using the re-established connection, so that the core network device releases the first access network according to the tracking area update command.
  • the second access network device sends the first terminal identity to the first access network device.
  • the second access network device may determine, according to the first message, that the terminal moves from the first access network device to the second access network device, so as to send the first terminal identifier to the first access network device, so as to obtain the terminal. Context.
  • the first terminal identifier includes a terminal ID (identification) and an access network device ID.
  • the second access network device may determine, according to the first terminal identifier and the access technology type information, the access that the terminal belongs before moving to the range of the second access network device.
  • the network device is the first access network device to obtain the context of the terminal.
  • the second access network device may first determine, according to the access technology type information, a radio access technology used by the access network device to which the terminal belongs before moving, and then access the access network in the network using the radio access technology.
  • the device ID determines that the access network device to which the mobile device belongs before is the first access network device, and finally obtains the context of the terminal from the first access network device by using the terminal ID.
  • the second access network device may send the first terminal identifier to the first access network device by using a message.
  • the message is referred to as a second message.
  • second The message may be a terminal information indication message, a terminal location update message, or a context request message.
  • the second access network device may determine, according to whether the first message carries the information indicating that the terminal is in the first state, the message used by the first access network device to send the first terminal identifier. .
  • the second access network sends the first terminal identifier to the first access network device by using the terminal information indication message or the terminal location update message; or The first message does not carry the information indicating that the terminal is in the first state, and the second access network uses the context request message to send the first terminal identifier to the first access network device.
  • the second access network device may further carry, in the second message, the information indicating that the terminal is in the first state, so that the first access network The current state of the terminal is judged based on the information.
  • the second access network device may further carry the sending indication in the second message, so that the first access network determines, according to the sending indication, whether the terminal currently has data and / or signaling needs to be sent.
  • the second access network device may further carry the paging area update indication in the second message, so that the first access network updates according to the paging area. Indicates whether the terminal has moved out of the paging area.
  • the first access network device sends the context of the terminal or the terminal suspension indication to the second access network device according to the first terminal identifier.
  • the first access network device can send a context transfer message to the second access network device, the context transfer message carrying the context of the terminal.
  • the context delivery message may also be referred to as a context migration message.
  • the context migration message can be a handover message or a context response message.
  • the terminal suspension indication may be sent to the second access network device.
  • the above suspended state means that the interface between the terminal and the core network remains in the first access network device but the interface is deactivated.
  • the second access network device may send a suspension command to the terminal according to the suspension indication of the terminal.
  • the first access network device can determine the status of the terminal based on the type of the second message. For example, when the second message is a terminal information indication message or a terminal location update message, the first access network device may determine that the terminal is in the first state. Further, if the first access network is set It is determined that the terminal is in the first state, and the first access network device may perform a context migration process or a suspension process, and send a context or terminal suspension indication of the terminal to the second access network.
  • the second message is a terminal information indication message or a terminal location update message
  • the first access network device may determine that the terminal is in the first state. Further, if the first access network is set It is determined that the terminal is in the first state, and the first access network device may perform a context migration process or a suspension process, and send a context or terminal suspension indication of the terminal to the second access network.
  • the first access network device may determine to perform a context migration process or a suspension process according to whether the foregoing sending indication or paging area update indication is carried in the second message. For example, if the second message carries the foregoing sending indication, the first access network device performs a context migration process; for example, if the sending message is not carried in the second message, the first access network device performs a suspending process; For another example, if the second message carries a paging area update indication, the first access network device performs a suspend process.
  • the first access network may determine the status of the terminal according to whether the second message carries the information indicating that the terminal is in the first state. For example, when the second message carries the information indicating that the terminal is in the first state, the first access network device may determine that the terminal is in the first state. Further, if the first access network device determines that the terminal is in the first state, the first access network device may perform a context migration process or a suspension process, and send a context or terminal suspension indication of the terminal to the second access network.
  • the specific implementation manner of the first access network device performing the context migration process or the suspension process is similar to the implementation process of the context migration process or the suspension process in the previous example. For details, refer to the detailed description in the previous example. Do not repeat them.
  • the solution provided by the embodiment of the present invention is mainly introduced from the perspective of interaction between different network elements.
  • the first access network device, the second access network device, the core network device, and the terminal include corresponding hardware structures and/or software modules for performing the respective functions.
  • the embodiments of the present invention can be implemented in a combination of hardware or hardware and computer software in combination with the elements and algorithm steps of the various examples described in the embodiments disclosed herein. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the technical solutions of the embodiments of the present invention.
  • the embodiments of the present invention may perform functional unit division on the first access network device, the second access network device, the core network device, the terminal, and the like according to the foregoing method.
  • each functional unit may be divided according to each function, or may be Two or more functions are integrated in one processing unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit. It should be noted that the division of the unit in the embodiment of the present invention is schematic. Only for a logical function division, there may be another division method in actual implementation.
  • FIG. 7 shows a schematic block diagram of a first access network device provided in an embodiment of the present invention.
  • the first access network device 700 includes a processing unit 702 and a communication unit 703.
  • the processing unit 702 is configured to perform control management on the action of the first access network device 700.
  • the processing unit 702 is configured to support the first access network device 700 to perform the processes 302, 306, and 308 in FIG. 3, where Processes 402, 404, 405, and 409, processes 502, 504, 505, and 509 in FIG. 5, processes 601 and 605 in FIG. 6, and/or other processes for the techniques described herein.
  • the communication unit 703 is configured to support communication between the first access network device 700 and other network elements (eg, second access network devices, core network devices, etc.).
  • the first access network device 700 may further include a storage unit 701 for storing program codes and data of the first access network device 700.
  • the processing unit 702 can be a processor or a controller.
  • the communication unit 703 may be a communication interface, a transceiver or a transceiver circuit, etc., wherein the communication interface is a collective name.
  • the communication interface may include multiple interfaces, for example, the access network device and the access network device may be included.
  • the storage unit 701 can be a memory.
  • FIG. 8 shows a schematic block diagram of a second access network device provided in an embodiment of the present invention.
  • the second access network device 800 includes a processing unit 802, a first communication unit 803, and a second communication unit 804.
  • the processing unit 802 is configured to control and manage the action of the second access network device 800.
  • the processing unit 802 is configured to support the second access network device 800 to perform the processes 303 and 305 in FIG. 3, the process 406 in FIG. 408 and 410, processes 506 and 508 in FIG. 5, process 604 in FIG. 6, and/or other processes for the techniques described herein.
  • the first communication unit 803 is configured to support communication between the second access network device 800 and other access network devices or core network devices.
  • the second communication unit is configured to support communication between the second access network device 800 and the terminal.
  • the second access network device 800 may further include a storage unit 801 for storing program codes and data of the second access network device 800.
  • the processing unit 802 can be a processor or a controller.
  • the first communication unit 803 may be a communication interface, where the communication interface is a collective name.
  • the communication interface may include multiple interfaces, for example, may include: an interface between the access network device and the access network device, An interface and/or other interface between the access network device and the core network device.
  • the second communication unit can be received Transmitter or transceiver circuit.
  • the storage unit 801 can be a memory.
  • the structure of the first access network device according to the embodiment of the present invention may be as shown in FIG. .
  • the processing unit 802 is a processor
  • the first communication unit 803 is a communication interface
  • the second communication unit 804 is a transmitter/receiver
  • the storage unit 801 is a memory
  • the second access network device according to the embodiment of the present invention is also The structure of the access network device can be as shown in FIG.
  • FIG. 9 is a schematic diagram of a possible structure of an access network device according to an embodiment of the present invention.
  • Access network device 900 includes a processor 902 and a communication interface 904.
  • the processor 902 may also be a controller, and is represented as "controller/processor 902" in FIG.
  • the communication interface 904 is configured to support the access network device to communicate with other network elements (eg, other access network devices, core network devices, etc.).
  • the access network device 900 can also include a transmitter/receiver 901.
  • the transmitter/receiver 901 is configured to support transmission and reception of information between the access network device and the terminal in the foregoing embodiment, and to support radio communication between the terminal and other terminals.
  • the processor 902 performs various functions for communicating with the terminal.
  • an uplink signal from the terminal is received via an antenna, demodulated by the receiver 901 (eg, demodulating the high frequency signal into a baseband signal), and further processed by the processor 902 to recover the terminal.
  • traffic data and signaling messages are processed by processor 902 and modulated by transmitter 901 (e.g., modulating a baseband signal into a high frequency signal) to produce a downlink signal that is transmitted to the terminal via an antenna.
  • transmitter 901 e.g., modulating a baseband signal into a high frequency signal
  • the processor 902 is further configured to perform a process involving the first access network device in the method shown in FIG. 3 to FIG. 6 and/or the present application.
  • the access network device 900 may further include a memory 903 for storing program codes and data of the access network device 900.
  • Figure 9 only shows a simplified design of the access network device 900.
  • the access network device 900 can include any number of transmitters, receivers, processors, controllers, memories, communication units, etc., and all access network devices that can implement the embodiments of the present invention are in the embodiment of the present invention. Within the scope of protection.
  • FIG. 10 shows a possible schematic block diagram of the core network device involved in the embodiment of the present invention.
  • the core network device 1000 includes a processing unit 1002 and a communication unit 1003.
  • the processing unit 1002 is configured to perform control management on the actions of the core network device.
  • the processing unit 1002 is configured to support the core network device to perform the processes 301 and 307 in FIG. 3, the processes 401 and 410 in FIG. 4, and the process in FIG. 501, and/or other processes for the techniques described herein.
  • the communication unit 1003 is configured to support communication of the core network device with other network entities.
  • the core network device may further include a storage unit 1001 for storing program codes and data of the core network device.
  • the processing unit 1002 may be a processor or a controller, such as a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), and an application-specific integrated circuit (Application-Specific). Integrated Circuit (ASIC), Field Programmable Gate Array (FPGA) or other programmable logic device, transistor logic device, hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
  • the communication unit 1303 may be a communication interface, a transceiver or a transceiver circuit, etc., wherein the communication interface is a collective name.
  • the communication interface may include multiple interfaces, for example, may include: a core network device and an access network device. Interface and/or other interfaces.
  • the storage unit 1001 may be a memory.
  • the core network device involved in the embodiment of the present invention may be the core network device shown in FIG.
  • the core network device 1100 includes a processor 1102, a communication interface 1103, and a memory 1101.
  • the core network device 1100 may further include a bus 1104.
  • the communication interface 1103, the processor 1102, and the memory 1101 may be connected to each other through a bus 1104; the bus 1104 may be a Peripheral Component Interconnect (PCI) bus or an extended industry standard structure (Extended Industry) Standard Architecture (EISA) bus, etc.
  • the bus 1104 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 11, but it does not mean that there is only one bus or one type of bus.
  • FIG. 12 shows a schematic block diagram of one possible terminal provided in an embodiment of the present invention.
  • the terminal 1200 includes a processing unit 1202 and a communication unit 1203.
  • the processing unit 1202 is configured to perform control management on the actions of the terminal 1200.
  • the processing unit 1202 is configured to support the terminal 1200 to perform the process 304 in FIG. 3, processes 403 and 407 in FIG. 4, and processes 503 and 507 in FIG. Processes 602 and 603 in Figure 6, and/or other processes for the techniques described herein.
  • the communication unit 1203 is for supporting communication between the terminal 1200 and other network elements.
  • the terminal 1200 may further include a storage unit 1201 for storing program codes and data of the terminal 1200.
  • the terminal involved in the embodiment of the present invention may be the terminal shown in FIG.
  • FIG. 13 is a simplified schematic diagram showing one possible design structure of a terminal involved in an embodiment of the present invention.
  • the terminal 1300 includes a transmitter 1301, a receiver 1302, and a processor 1303.
  • the processor 1303 may also be a controller, and is represented as "controller/processor 1303" in FIG.
  • the terminal 1300 may further include a modem processor 1305.
  • the modem processor 1305 may include an encoder 1307, a modulator 1307, a decoder 1308, and a demodulator 1309.
  • the transmitter 1301 conditions (eg, analog transforms, filters, amplifies, upconverts, etc.) the output samples and generates an uplink signal that is transmitted via an antenna to the base station described in the above embodiments. .
  • the antenna receives the downlink signal transmitted by the base station in the above embodiment.
  • Receiver 1302 conditions (eg, filters, amplifies, downconverts, digitizes, etc.) the signals received from the antenna and provides input samples.
  • encoder 1307 receives the traffic data and signaling messages to be transmitted on the uplink and processes (e.g., formats, codes, and interleaves) the traffic data and signaling messages.
  • Modulator 1307 further processes (e.g., symbol maps and modulates) the encoded service data and signaling messages and provides output samples.
  • Demodulator 1309 processes (e.g., demodulates) the input samples and provides symbol estimates.
  • the decoder 1308 processes (e.g., deinterleaves and decodes) the symbol estimate and provides decoded data and signaling messages that are sent to the terminal 1300.
  • the 1308 can be implemented by a synthesized modem processor 1305. These units are processed according to the radio access technology employed by the radio access network (e.g., access technologies of LTE and other evolved systems). It should be noted that when the terminal 1300 does not include the modem processor 1305, the foregoing functions of the modem processor 1305 may also be completed by the processor 1303.
  • the processor 1303 controls and manages the actions of the terminal 1300 for performing the processing performed by the terminal 1300 in the embodiment of the present invention.
  • the processor 1303 is further configured to perform the processes related to the terminal in the method shown in FIG. 3 to FIG. 6 and/or other processes of the technical solutions described in the present application.
  • the terminal 1300 may further include a memory 1304 for storing program codes and data for the terminal 1300.
  • the steps of the method or algorithm described in connection with the disclosure of the embodiments of the present invention may be implemented in a hardware manner, or may be implemented by a processor executing software instructions.
  • the software instructions may be composed of corresponding software modules, which may be stored in a random access memory (RAM), a flash memory, a read only memory (ROM), an erasable programmable read only memory ( Erasable Programmable ROM (EPROM), electrically erasable programmable read only memory (EEPROM), registers, hard disk, removable hard disk, compact disk read only (CD-ROM) or any other form of storage medium known in the art.
  • An exemplary storage medium is coupled to the processor to enable the processor to read information from, and write information to, the storage medium.
  • the storage medium can also be an integral part of the processor.
  • the processor and the storage medium can be located in an ASIC.
  • the ASIC can be located in a base station or terminal.
  • the processor and the storage medium may also reside as a discrete component in a base station or terminal.
  • the functions described in the embodiments of the present invention may be implemented in hardware, software, firmware, or any combination thereof.
  • the functions may be stored in a computer readable medium or transmitted as one or more instructions or code on a computer readable medium.
  • Computer readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another.
  • a storage medium may be any available media that can be accessed by a general purpose or special purpose computer.

Abstract

本发明实施例提供一种通信方法，用于通信系统中，该通信系统包括寻呼区域，该寻呼区域内至少包括第一接入网设备和第二接入网设备，第一接入网设备与核心网设备具有链路，该方法包括：第一接入网设备从核心网设备接收终端的信令；第一接入网设备向第二接入网设备发送寻呼消息，该寻呼消息用于寻呼终端；第一接入网设备从第二接入网设备接收第一指示信息，第一指示信息用于指示终端接入第二接入网设备。本发明实施例中，第一接入网设备在接收到核心网设备发送的终端的信令后，向第二接入网设备发送寻呼消息，当接收到第二接入网设备发送的第一指示消息时，能够获知终端已接入第二接入网设备，从而进行合理的后续处理。

Description

一种通信方法、设备和系统 技术领域
本发明涉及通信技术领域，尤其涉及一种通信方法、设备和系统。
背景技术
在无线通信系统中，终端可以通过无线接入网(Radio Access Network，RAN)接入到核心网(Core Network，CN)。例如，终端可以通过RAN中的某一接入网设备接入到CN中的核心网设备。核心网设备可以通过该接入网设备向终端发送信令，并接收到对应的回复。然而，当终端移动出该接入网设备的范围时，终端不会接收到核心网设备的信令，从而导致无法进行合理的后续处理。
发明内容
本发明实施例描述了一种通信方法，用以解决在终端未接收到核心网设备的信令的情况下，无法进行合理的后续处理的问题。
一方面，本发明实施例提供一种通信方法，该方法用于通信系统中，该通信系统包括寻呼区域，寻呼区域内至少包括第一接入网设备和第二接入网设备，第一接入网设备与核心网设备具有链路，该方法包括：第一接入网设备从核心网设备接收终端的信令；第一接入网设备向第二接入网设备发送第一寻呼消息，该第一寻呼消息用于寻呼终端；第二接入网设备向终端发送第二寻呼消息；第二接入网设备从终端接收寻呼响应；第二接入网设备向第一接入网设备发送第一指示信息，第一指示信息用于指示终端接入第二接入网设备。本发明实施例中，第一接入网设备在接收到核心网设备发送的终端的信令后，向第二接入网设备发送第一寻呼消息，当接收到第二接入网设备发送的第一指示消息时，能够获知终端已接入第二接入网设备，从而进行合理的后续处理。
上述寻呼区域内至少包括第一接入网设备和第二接入网设备，可以是该寻呼区域包括第一接入网设备和第二接入网设备；也可以是该寻呼区域除包 括第一接入网设备和第二接入网设备外，还包括其他接入网设备。上述寻呼区域包括第一接入网设备和第二接入网设备是指：第一接入网设备的部分或全部小区，以及第二接入网设备的部分或全部小区属于该寻呼区域。
上述信令可以包括以下至少一项：非接入层NAS信令、无线承载管理信令、终端上下文修改信令、终端上下文删除信令、位置报告信令、跟踪信令或位置业务LCS信令。例如，第一接入网设备可以从核心网设备接收上下文修改命令，并根据该上下文修改命令向终端发送RRC重配置命令，以对终端的上下文进行修改；又例如，第一接入网设备可以从核心网设备接收NAS信令后，将该NAS信令转发给终端。
在一个可能的设计中，第一接入网设备可以在没有收到终端的寻呼响应时，向第二接入网设备发送第一寻呼消息。在一个可能的设计中，第一接入网设备可以从第二接入网设备接收终端信息指示消息，终端信息指示消息携带第一指示信息；或者，第一接入网设备可以从第二接入网设备接收终端上下文请求消息，终端上下文请求消息携带第一指示信息。
在一个可能的设计中，第一接入网设备还可以向核心网设备发送第二指示信息，第二指示信息用于指示终端已经移动出第一接入网设备的范围。例如，第一接入网设备可以向核心网设备发送上述信令的响应消息，该响应消息携带第二指示信息；又例如，第一接入网设备可以向核心网设备发送信令失败消息，信令失败消息携带第二指示信息，其中，信令失败消息用于指示上述信令未成功发送。
其中，上述第二指示信息可以包括第二接入网设备的信息和终端的状态信息之一或全部。其中，该状态信息用于指示终端所处的状态。例如，终端所处的状态可以为：当终端在寻呼区域内移动时，终端与核心网设备的接口保持在第一接入网设备；又例如，终端所处的状态可以为：终端能保持连接上下文，并且执行小区重选的移动性；又例如，终端所处的状态可以为轻连接态，其中，轻连接态又可以称为非激活态、去激活态、低活动态或低开销态等。
在一种可能的实施方式中，第二接入网设备向第一接入网设备发送第一指示信息后，还可以从核心网设备接收终端的信令。可选的，第二接入网设备在接收该信令之前，还可以向核心网设备发送路径切换请求。
在一个可能的设计中，第一接入网设备还可以向第二接入网设备发送上述信令。例如，第一接入网设备可以向第二接入网设备发送上下文传递消息，该上下文传递消息携带上述信令。
在一种可能的实施方式中，第一接入网设备还可以从第二接入网设备接收第一信令处理指示，第一信令处理指示用于指示上述信令处理成功或上述信令处理失败。例如，第一接入网设备可以从第二接入网设备接收上下文传递确认消息，该上下文传递确认消息携带第一信令处理指示。进一步的，第一接入网设备还可以向核心网设备发送第二信令处理指示，第二信令处理指示用于指示上述信令处理成功或上述信令处理失败。
在一个可能的设计中，第二接入网设备还可以向终端发送上述信令。
另一方面，本发明实施例提供一种通信方法，该方法用于通信系统中，该通信系统包括寻呼区域，寻呼区域内至少包括第一接入网设备和第二接入网设备，第一接入网设备与核心网设备具有链路，该方法包括：核心网设备向第一接入网设备发送终端的信令；核心网设备从第一接入网设备接收第二指示信息，第二指示信息用于指示终端已经移动出第一接入网设备的范围；核心网设备向第二接入网设备发送上述信令。本发明实施例中，核心网设备向第一接入网设备发送上述信令后，能够从第一接入网设备接收第二指示信息，从能够获知终端已经移动出第一接入网设备的范围，并向第二接入网设备发送上述信令，以进行合理的后续处理。
上述寻呼区域内至少包括第一接入网设备和第二接入网设备，可以是该寻呼区域包括第一接入网设备和第二接入网设备；也可以是该寻呼区域除包括第一接入网设备和第二接入网设备外，还包括其他接入网设备。上述寻呼区域包括第一接入网设备和第二接入网设备是指：第一接入网设备的部分或全部小区，以及第二接入网设备的部分或全部小区属于该寻呼区域。
上述信令可以包括以下至少一项：非接入层NAS信令、无线承载管理信令、终端上下文修改信令、终端上下文删除信令、位置报告信令、跟踪信令或位置业务LCS信令。
在一个可能的设计中，核心网设备可以从第一接入网设备接收上述信令的响应消息，该响应消息携带第二指示信息；或者，核心网设备可以从第一接入网设备接收信令失败消息，信令失败消息携带第二指示信息，其 中，信令失败消息用于指示上述信令未成功发送。
其中，上述第二指示信息可以包括第二接入网设备的信息和终端的状态信息之一或全部。其中，该状态信息用于指示终端所处的状态。例如，终端所处的状态可以为：当终端在寻呼区域内移动时，终端与核心网设备的接口保持在第一接入网设备；又例如，终端所处的状态可以为：终端能保持连接上下文，并且执行小区重选的移动性；又例如，终端所处的状态可以为轻连接态。
在一种可能的设计中，核心网设备从第一接入网设备接收第二指示信息后，还可以向第二接入网设备发送上述信令。例如，核心网设备可以根据第二接入网设备的信息向第二接入网设备发送该信令；又例如，核心网设备可以在接收第二接入网设备发送的路径切换请求后，向第二接入网设备发送该信令。
又一方面，本发明实施例提供一种第一接入网设备，该第一接入网设备具有实现上述方法示例中第一接入网设备行为的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。
在一个可能的设计中，第一接入网设备包括处理器，所述处理器被配置为支持第一接入网设备执行上述方法中相应的功能。进一步的，第一接入网设备还可以包括通信接口，所述通信接口用于支持第一接入网设备与第二接入网设备或核心网设备的通信。进一步的，第一接入网设备还可以包括存储器，所述存储器用于与处理器耦合，其保存第一接入网设备必要的程序指令和数据。
又一方面，本发明实施例提供一种第二接入网设备，该第二接入网设备具有实现上述方法示例中第二接入网设备行为的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。
在一个可能的设计中，第二接入网设备包括处理器，所述处理器被配置为支持第二接入网设备执行上述方法中相应的功能。进一步的，第二接入网设备还可以包括通信接口、发射器和接收器，所述通信接口用于支持第二接入网设备与第一接入网或核心网设备的通信，所述发射器和接收器用于支持 第二接入网设备与终端之间的通信。进一步的，第二接入网设备还可以包括存储器，所述存储器用于与处理器耦合，其保存第二接入网设备必要的程序指令和数据。
又一方面，本发明实施例提供一种核心网设备，该核心网设备具有实现上述方法示例中核心网设备行为的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。
在一个可能的设计中，核心网设备包括处理器，所述处理器被配置为支持核心网设备执行上述方法中相应的功能。进一步的，核心网设备还可以包括通信接口，所述通信接口用于支持核心网设备与第一接入网设备或第二接入网设备之间的通信。进一步的，核心网设备还可以包括存储器，所述存储器用于与处理器耦合，其保存核心网设备必要的程序指令和数据。
又一方面，本发明实施例提供一种通信系统，该系统包括上述方面所述的第一接入网设备和第二接入网设备；或者，该系统包括上述方面所述的第一接入网设备、第二接入网设备以及核心网设备。
再一方面，本发明实施例提供一种计算机存储介质，用于储存为上述用于第一接入网设备所用的计算机软件指令，其包含用于执行上述方面所设计的程序。
再一方面，本发明实施例提供一种计算机存储介质，用于储存为上述用于第二接入网设备所用的计算机软件指令，其包含用于执行上述方面所设计的程序。
再一方面，本发明实施例提供一种计算机存储介质，用于储存为上述用于核心网设备所用的计算机软件指令，其包含用于执行上述方面所设计的程序。
相较于现有技术，本发明实施例的方案中，第一接入网设备在接收到核心网设备发送的终端的信令后，向第二接入网设备发送第一寻呼消息，当接收到第二接入网设备发送的第一指示消息时，能够获知终端已接入第二接入网设备，从而进行合理的后续处理。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施例，对于本领域普通技术人员来说，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明实施例提供的一种可能的应用场景的示意图；
图2为本发明实施例提供的一种可能的网络架构的示意图；
图3为本发明实施例提供的一种通信方法的通信示意图；
图4为本发明实施例提供的另一种通信方法的通信示意图；
图5为本发明实施例提供的又一种通信方法法的通信示意图；
图6为本发明实施例提供的再一种通信方法的通信示意图；
图7为本发明实施例提供的一种第一接入网设备的示意性框图；
图8为本发明实施例提供的一种第二接入网设备的示意性框图；
图9为本发明实施例提供的一种接入网设备的结构示意图；
图10为本发明实施例提供的一种核心网设备的示意性框图；
图11为本发明实施例提供的一种核心网设备的结构示意图；
图12为本发明实施例提供的一种终端的示意性框图；
图13为本发明实施例提供的一种终端的结构示意图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行描述。
本发明实施例描述的网络架构以及业务场景是为了更加清楚的说明本发明实施例的技术方案，并不构成对于本发明实施例提供的技术方案的限定，本领域普通技术人员可知，随着网络架构的演变和新业务场景的出现，本发明实施例提供的技术方案对于类似的技术问题，同样适用。
下面首先结合图1和图2对本发明实施例适用的一些可能的应用场景及网络架构进行介绍。
图1示出了本发明实施例可能适用的一种应用场景。如图1所示，终端通过无线接入网及核心网接入运营商互联网协议(Internet Protocol，IP)业务网络，例如多媒体子系统(IP Multimedia System，IMS)网络、包交换流业 务(Packet Switched Streaming Service，简PSS)网络等。本发明描述的技术方案可以适用于长期演进(Long Term Evolution，LTE)系统，或其他采用各种无线接入技术的无线通信系统，例如采用码分多址(Code Division Multiple Access，CDMA)、频分多址(Frequency Division Multiple Access，FDMA)、时分多址(Time Division Multiple Access，TDMA)、正交频分多址(Orthogonal Frequency Division Multiple Access，OFDMA)、单载波频分多址(Single Carrier Frequency Division Multiple Access，SC-FDMA)等接入技术的系统。此外，还可以适用于LTE系统后续的演进系统，如第五代(5th Generation，5G)系统等。为清楚起见，这里仅以LTE系统为例进行说明。在LTE系统中，演进的通用陆地无线接入网(Evolved Universal Terrestrial Radio Access Network，E-UTRAN)作为无线接入网，演进分组核心网(Evolved Packet Core，EPC)作为核心网。终端通过E-UTRAN及EPC接入IMS网络。需要说明的是，当本发明实施例的方案应用于5G系统或未来可能出现的其他系统时，基站、终端的名称可能发生变化，但这并不影响本发明实施例方案的实施。
基于上述应用场景，图2示出了本发明实施例提供的一种可能的网络架构。如图2所示，该网络架构包括：核心网设备、终端和多个接入网设备。接入网设备101和接入网设备102处于同一寻呼区域，例如第一寻呼区；接入网设备103处于另一寻呼区域，例如第二寻呼区。其中，接入网设备101可以称为第一寻呼区的锚点接入网设备。锚点接入网设备是指保存终端设备的上下文信息并且保持该终端与核心网设备之间连接的接入网设备，其与核心网设备相连，且与第一寻呼区中的其它接入网设备相连。图2中，终端201处于轻连接态。终端处于轻连接状态是指：终端与核心网设备之间的接口保持在锚点接入网设备，且终端在一定区域内移动不用通知锚点接入网设备，当移动出该一定区域才通知锚点接入网设备。例如，终端201可以通过第一寻呼区中的接入网设备101保持终端201与核心网设备之间的接口，且终端201在第一寻呼区中移动时不用通知接入网设备101，当终端201移动出该第一寻呼区时，才通知接入网设备101。
本发明实施例所涉及的轻连接态可以是无线资源控制(Radio Resource Control，RRC)连接态的子状态，也可以是空闲(idle)态的增强状态，还可以是独立的状态。上述轻连接态也可以有其他名称，例如， 轻连接状态也可以称为非激活态、去激活态、低活动态或低开销态等。本发明实施例对轻连接态的名称或形态不作限定。为描述方便，下文可以用第一状态来描述轻连接态。
本发明实施例所涉及的寻呼区域可以是一种小区集合的名称，该小区集合由接入网设备管理。当终端在该小区集合中移动时不需要通知对该终端进行寻呼区配置的接入网设备；当终端移动出该小区集合时，需要通知该接入网设备。该小区集合中的接入网设备在需要与终端设备进行通信时，需要在该小区集合所包括的所有小区内对终端进行寻呼。需要说明的是，上述寻呼区域还可以称为终端的注册区域、终端的轻连接区域、终端的管理区域、终端的接入网注册区域、终端的跟踪区域或终端的接入网跟踪区域等，本发明实施例并不限定。
本发明实施例中，名词“网络”和“系统”经常交替使用，但本领域技术人员可以理解其含义。本发明实施例所涉及到的终端可以包括各种具有无限通信功能的手持设备、车载设备、可穿戴设备、计算设备或连接到无线调制解调器的其他处理设备，以及各种形式的用户设备(User Equipment，UE)，移动台(Mobile Station，MS)，终端设备(terminal device)等等。为方便描述，上面提到的设备统称为终端。本发明实施例所涉及到的接入网设备是一种部署在无线接入网中用以为终端提供无线通信功能的装置。例如，接入网设备可以是基站(Base Station，BS)，所述基站可以包括各种形式的宏基站，微基站，中继站，接入点等等。在采用不同的无线接入技术的系统中，具备基站功能的设备的名称可能会有所不同，例如在长期演进(Long Term Evolution，LTE)系统中，称为演进的节点B(evolved NodeB，eNB或eNodeB)，在第三代(3rd Generation，3G)通信系统中，称为节点B(Node B)等等。为方便描述，本发明实施例中，上述为终端提供无线通信功能的装置统称为接入网设备。本发明实施例所涉及到的核心网设备在不同的系统中可以包括不同的设备。例如，在LTE系统中核心网设备可以包括移动性管理实体(Mobility Management Entity，MME)或服务网关(Serving Gateway，SGW)，在3G通信系统中可以包括核心网设备可以包括服务GPRS支撑节点(Serving GPRS Support Node，SGSN)或网关GPRS支撑节点(Gateway GPRS support Node，GGSN)。其中，GPRS是通用分组无线系统(General Packet Radio  System)的缩写。本发明实施例所涉及到的核心网设备还可以包括5G系统或未来可能出现的其他系统中的核心网设备。
下面将基于上面所述的本发明实施例涉及的共性方面，对本发明实施例进一步详细说明。
现有方案中，当终端通过某一接入网设备接入到核心网设备时，若终端移动出该接入网设备的范围(例如，处于切换过程中的终端还未接入到切换后的接入网设备，或者，处于轻连接态的终端移动到同一寻呼区域的其它接入网设备的范围)，终端不会接收到核心网设备的信令，从而导致无法进行合理的后续处理。
有鉴于此，本发明实施例提供一种通信方法，和基于这个方法的设备和系统。该方法用于通信系统中，该通信系统包括寻呼区域，寻呼区域内至少包括第一接入网设备和第二接入网设备，第一接入网设备与核心网设备之间具有链路，该方法包括：第一接入网设备从核心网设备接收终端的信令；第一接入网设备向第二接入网设备发送第一寻呼消息，该第一寻呼消息用于寻呼终端；第二接入网设备向终端发送第二寻呼消息；第二接入网设备从终端接收寻呼响应；第二接入网设备向第一接入网设备发送第一指示信息，第一指示信息用于指示所述终端接入第二接入网设备。本发明实施例中，第一接入网设备在接收到核心网设备发送的终端的信令后，向第二接入网设备发送第一寻呼消息，当接收到第二接入网设备发送的第一指示信息时，能够获知终端已接入第二接入网设备，从而进行合理的后续处理。
需要说明的是，第二接入网设备可以是该寻呼区域内除第一接入网设备以外的任意接入网设备。
可以理解的是，上述寻呼区域内至少包括第一接入网设备和第二接入网设备，可以是该寻呼区域包括第一接入网设备和第二接入网设备；也可以是该寻呼区域除包括第一接入网设备和第二接入网设备外，还包括其他接入网设备。上述寻呼区域包括第一接入网设备和第二接入网设备是指：第一接入网设备的部分或全部小区，以及第二接入网设备的部分或全部小区属于该寻呼区域。
下面结合附图3，对本发明实施例提供的方案进行说明。图3所示的方法用于通信系统中，该通信系统包括寻呼区域，寻呼区内至少包括第一 接入网设备和第二接入网设备，第一接入网设备与核心网设备之间具有链路，该方法包括：301～305部分。
在301部分，核心网设备向第一接入网设备发送信令。
其中，该信令是终端的信令。
在一个示例中，该信令可以包括以下至少一项：非接入层(Non-Access Stratum，NAS)信令、无线承载管理信令、终端上下文修改信令、终端上下文删除信令、位置报告信令、跟踪信令或位置业务(Location Service，LCS)信令。其中，无线承载管理信令可以包括无线承载建立信令、无线承载修改信令或无线承载删除信令中的至少一项。
可以理解的是，第一接入网设备从核心网设备接收终端的信令后，需要向终端发送信令。例如，第一接入网设备从核心网设备接收上下文修改命令后，可以根据该上下文修改命令向终端发送RRC重配置命令，以对终端的上下文进行修改；又例如，第一接入网设备从核心网设备接收NAS信令后，可以将该NAS信令转发给终端。而第一接入网设备在向终端发送信令前，第一接入网设备仅知道该终端处于寻呼区域内，因此，第一接入网设备需要在寻呼区域内向该终端发起寻呼，以便该终端和网络建立连接。例如，第一接入网设备可以直接向该终端发起寻呼，也可以触发第二接入网设备向该终端发起寻呼。
在302部分，第一接入网设备向第二接入网设备发送第一寻呼消息，第一寻呼消息用于寻呼终端。
在一个示例中，第一接入网设备可以在没有收到终端的寻呼响应时，向第二接入网设备发送第一寻呼消息。例如，第一接入网设备从核心网设备接收上述信令后，可以先向终端发送第三寻呼消息，当在一段时间内未接收到终端的寻呼响应时，向第二接入网设备发送第一寻呼消息。可选的，终端在接收第一接入网设备发送的第三寻呼消息之前，还可以接收第一接入网设备发送的配置信息，配置信息用于终端进入第一状态。该可选部分的实施情况与后续图7的701部分相似，可以参考701部分的详细描述，此处不作赘述。
在303部分，第二接入网设备向终端发送第二寻呼消息。
在一个示例中，终端在接收第二接入网设备发送的第二寻呼消息之 前，还可以接收第一接入网设备发送的配置信息，配置信息用于终端进入第一状态。本示例的情况与后续图7的701部分相似，可以参考701部分的详细描述，此处不作赘述。
在304部分，第二接入网设备从终端接收寻呼响应。
在一个示例中，第二接入网设备可以从终端接收位置更新消息、RRC连接恢复请求消息、RRC连接重建消息或者RRC连接继续消息，位置更新消息、RRC连接恢复请求消息、RRC连接重建消息或者RRC连接继续消息携带该寻呼响应。第二接入网设备在接收终端发送的寻呼响应后，可以根据该寻呼响应确定该终端当前处于第二接入网设备的范围。
在305部分，第二接入网设备向第一接入网设备发送第一指示信息，第一指示信息用于指示终端接入第二接入网设备。例如，第二接入网设备可以根据终端发送的寻呼响应向第一接入网设备发送第一指示信息。
在一个示例中，该第一指示信息可以包括该终端的标识。
在一个示例中，第二接入网设备可以向第一接入网设备发送终端信息指示消息，终端信息指示消息携带第一指示信息；或者，第二接入网设备可以向第一接入网设备发送终端上下文请求消息，终端上下文请求消息携带第一指示信息。在这种情况下，第一接入网设备可以根据上述终端信息指示消息或终端上下文请求消息确定终端当前处于第二接入网设备的范围。
在一个示例中，上述终端信息指示消息或终端上下文请求消息还可以携带该终端的数据指示，数据指示用于指示该终端是否有数据需要发送。
可选的，图3所示的方法还可以包括306部分和307部分；或者，图3所述的方法还可以包括308部分。
在306部分，第一接入网设备向核心网设备发送第二指示信息，第二指示信息用于指示终端已经移动出第一接入网设备的范围。
在一个示例中，第一接入网设备可以向核心网设备发送上述信令的响应消息，该响应消息携带第二指示信息；或者，第一接入网设备可以向核心网设备发送信令失败消息，信令失败消息携带第二指示信息，其中，信令失败消息用于指示上述信令未成功发送。
在一个示例中，第二指示信息可以包括第二接入网设备的信息或终端的状态信息，该终端的状态信息用于指示终端所处的状态。例如，终端所处的 状态可以为：当终端在寻呼区域内移动时，终端与核心网设备的接口保持在所述第一接入网设备。又例如，终端所处的状态可以为：终端保存连接上下文，并且执行小区重选的移动性。又例如，终端所处的状态可以为轻连接态。
在307部分，核心网设备向第二接入网设备发送上述信令。
在一个示例中，核心网设备向第二接入网设备发送上述信令之前，还可以向核心网设备发送路径切换请求。
在一个示例中，当上述第二指示信息包括第二接入网设备的信息时，核心网设备可以根据第二接入网设备的信息向第二接入网设备发送该信令。在这种情况下，核心网设备可以根据第二接入网设备的信息判断终端已经移动到第二接入网设备的范围，因此可以直接向第二接入网设备发送该信令。
在一个示例中，当上述第二指示信息包括终端的状态信息时，核心网设备向第二接入网设备发送该信令之前，核心网设备还可以从第二接入网设备接收路径切换请求。在这种情况下，核心网设备可以根据终端的状态信息判断终端所处的状态，需要在接收到第二接入网设备发送的路径切换请求后，向第二接入网设备发送该信令。
在一个示例中，第二接入网设备还可以向终端发送该信令。
由上可知，在第一接入网设备向核心网设备发送第二指示信息的情况下，核心网设备能够获知终端已移动出第一接入网设备的范围，并向第二接入网设备发送终端的信令，从而使得核心网设备的信令成功发送，以进行合理的后续处理。
在308部分，第一接入网设备向第二接入网设备发送上述信令。
在一个示例中，第一接入网设备可以向第二接入网设备发送上下文传递消息，上下文传递消息携带该信令。
在一个示例中，第一接入网设备还可以从第二接入网设备接收第一信令处理指示，第一信令处理指示用于指示上述信令处理成功或上述信令处理失败。进一步的，第一接入网设备还可以向核心网设备发送第二信令处理指示，第二信令处理指示用于指示上述信令处理成功或上述信令处理失败。
在一种可能的实施方式中，第一接入网设备可以从第二接入网设备接收上下文传递确认消息，上下文传递确认消息携带第一信令处理指示。
在一个示例中，第二接入网设备还可以向终端发送该信令。
由上可知，第一接入网设备在获知终端从第一接入网设备移动到第二接入网设备时，可以将上述信令发送给第二接入网设备，以使得第二接入网设备向终端发送该信令，从而使得核心网设备的信令成功发送，以进行合理的后续处理。
下面结合附图4，在图3所示方法的基础上，对本发明实施例提供的方案做进一步说明。图4所示方法中，与图3所示方法相同或相似的内容可以参考图3中的详细描述，此处不做赘述。
在401部分，核心网设备向第一接入网设备发送信令。
其中，该信令是终端的信令。
有关该信令的内容可以参见图3的301部分的详细描述，此处不作赘述。
在402部分，第一接入网设备向终端发送第三寻呼消息。
在一个示例中，终端在接收第一接入网设备发送的第三寻呼消息之前，还可以接收第一接入网设备发送的配置信息，配置信息用于终端进入第一状态。本示例的情况与后续图7的701部分相似，可以参考701部分的详细描述，此处不作赘述。
在403部分，终端向第一接入网设备发送第二寻呼响应。
在404部分，第一接入网设备向核心网设备发送信令成功消息。
第一接入网设备从终端接收第二寻呼响应后，还可以根据上述信令向终端发起重配置过程。
需要说明的是，上述403部分和404部分为可选的部分，若执行403部分和404部分，则图4所示方法结束，不再执行405～411部分。可以理解的是，若在执行403部分之前，已执行405部分和406部分，由于终端已在403部分中向第一接入网设备发送第二寻呼响应，一般不会再向第二接入网设备发送第一寻呼响应，则在执行403部分和404部分后，不再执行407～411部分。
若未执行403部分和404部分，则继续执行405部分。
在405部分，第一接入网设备向第二接入网设备发送第一寻呼消息，该第一寻呼消息用于寻呼终端。
在406部分，第二接入网设备向终端发送第二寻呼消息。
在一个示例中，终端在接收第二接入网设备发送的第二寻呼消息之前，还可以接收第一接入网设备发送的配置信息，配置信息用于终端进入第一状态。本示例的情况与后续图7的701部分相似，可以参考701部分的详细描述，此处不作赘述。
在407部分，终端向第二接入网设备发送第一寻呼响应。
408部分和409部分分别与图3的305部分和306部分相似，可以参考305部分和306部分的详细描述，此处不作赘述。
在410部分，第二接入网设备向核心网设备发送路径切换请求。
需要说明的是，410部分为可选的部分。当上述第二指示信息包括接入网设备的信息时，可以执行410部分，也可以不执行410部分；当上述第二指示信息包括终端的状态信息时，执行410部分。
411部分与图3的307部分相似，可以参考307部分的详细描述，此处不作赘述。
本发明实施例中，第一接入网设备从核心网设备接收到终端的信令后，分别向终端和第二接入网设备发送寻呼消息。若第一接入网设备从终端接收寻呼响应，则向核心网设备发送信令成功消息。若第一接入网设备从第二接入网设备接收第一指示信息，则向核心网设备发送第二指示信息；核心网设备在接收第二指示信息后，能够获知终端已经移动出第一接入网设备的范围，并向第二接入网设备发送该信令。无论何种情况，核心网设备的信令都能成功发送，以进行合理的后续处理。
下面结合附图5，在图3所示方法的基础上，对本发明实施例提供的方案做进一步说明。图5所示方法中，与图3或图4所示方法相同或相似的内容可以参考图3或图4中的详细描述，此处不做赘述。
501～507部分分别与图4的401～407部分相似，可以参考401～407部分的详细描述，此处不作赘述。
508部分和509部分分别与图3的305部分和308部分相似，可以参考305部分和308部分的详细描述，此处不作赘述。
本发明实施例中，第一接入网设备从核心网设备接收到终端的信令后，分别向终端和第二接入网设备发送寻呼消息。若第一接入网设备从终端接收 寻呼响应，则向核心网设备发送信令成功消息。若第一接入网设备从第二接入网设备接收指示信息，则向第二接入网设备发送该信令。无论何种情况，核心网设备的信令都能成功发送，以进行合理的后续处理。
本发明实施例还提供一种通信方法，和基于这个方法的设备和系统。该方法包括：终端从第一接入网设备接收配置信息；终端根据配置信息进入第一状态；终端向第二接入网设备发送消息，该消息携带第一终端标识；第二接入网设备向第一接入网设备发送第一终端标识；第一接入网设备根据第一终端标识向第二接入网设备发送终端的上下文或终端挂起指示。本发明实施例中，当终端从第一接入网设备移动到第二接入网设备后，能够将自身的标识发送给第二接入网设备，以便第二接入网设备从第一接入网设备处接收终端的上下文或者终端挂起指示。
下面结合附图6，对本发明实施例提供的方案进行说明。
在601部分，终端从第一接入网设备接收配置信息。
在一个示例中，配置信息包括状态指示信息，终端可以根据该状态指示信息进入第一状态。
在一个示例中，配置信息可以包括寻呼区标识和寻呼区参数之一或全部，终端可以根据寻呼区标识和寻呼区参数之一或全部进入第一状态。下面简单介绍寻呼区标识和寻呼区参数。
上述寻呼区标识用于标识终端在第一接入网设备范围内的服务小区，终端可以根据该寻呼区标识确定终端处于第一状态时的寻呼区。例如，若终端在第一接入网设备的当前服务小区的寻呼区标识为1，则终端处于第一状态时的寻呼区为寻呼区1；若终端在第一接入网设备的当前服务小区的寻呼区标识为2，则终端处于第一状态时的寻呼区为寻呼区2；依次类推。当然，寻呼区标识的具体形式可以有其他实施情况，本发明实施例并不限定。
上述寻呼区参数用于确定终端处于第一状态时的寻呼区信息。例如，寻呼区参数可以包括寻呼区小区列表，寻呼区小区列表中至少包含一个小区，终端可以将寻呼区小区列表中的小区作为终端的寻呼区；又例如，寻呼区参数包括寻呼区标识列表，寻呼区标识列表中至少包含一个寻呼区标识，终端可以将寻呼区标识列表中包含的寻呼区标识对应的小区作为终端 的寻呼区。
在一个示例中，配置信息还可以包括第一终端标识，第一终端标识可以为终端在当前所处的网络中使用的标识。终端可以保存该第一终端标识。
在一个示例中，配置信息还可以包括第一终端标识和第二终端标识，在这种情况下，第一终端标识为终端在第一制式网络中使用的标识，第二终端标识为终端在第二制式网络中使用的标识。例如，当终端处于第一制式网络时，终端可以使用第一终端标识在第一制式网络的寻呼区域内进行寻呼监听。又例如，当终端处于第二制式网络时，终端可以使用第二终端标识在第二制式网络的寻呼区域内进行寻呼监听。其中，上述第一制式网络和第二制式网络采用不同的无线接入技术，例如，第一制式网络采用第一接入技术，第二制式网络采用第二接入技术。在一种可能的情况中，上述第一制式网络可以为LTE网络或5G网络，第二制式网络可以为不同于第一制式网络的任意制式网络。
在这个示例中，上述寻呼区小区列表可以包含至少两个不同制式网络的小区；或者，上述寻呼区标识列表可以包含至少两个寻呼区标识，这两个寻呼区标识分别对应不同制式网络的小区。
在602部分，终端进入第一状态。
具体的，终端进入第一状态后，处于第一状态的终端与核心网设备之间的接口保持在第一接入网设备，且终端在寻呼区域内移动不用通知第一接入网设备，当终端移动出该寻呼区域时再通知第一接入网设备。
在一个示例中，终端还可以根据上述寻呼参数确定终端处于第一状态时的寻呼区信息。
在603部分，终端向第二接入网设备发送携带第一终端标识的消息。为描述方便，后续将该携带第一终端标识的消息称为第一消息。
其中，该第一消息可以用于通知第二接入网设备使用终端的第一终端标识。可选的，该第一消息可以为RRC连接恢复请求消息、RRC连接重建消息，位置更新消息或者RRC连接继续消息。
在一个示例中，终端可以在进入第二接入网设备的范围时向第二接入网设备发送第一消息。
在另一个示例中，终端在接收到第二接入网设备发送的寻呼时向第二接入网设备发送第一消息。例如，第二接入网设备处于终端的寻呼区域内，终端监听第二接入网设备的小区发送的寻呼消息，当终端接收到针对该终端的寻呼消息时，终端向第二接入网设备发送该第一消息。在这个示例中，该第一消息还可以携带终端的寻呼响应。
在一种可能的实施方式中，终端可以使用第一终端标识监听寻呼消息，若寻呼消息携带该第一终端标识，则终端确定被第二接入网设备所寻呼。
在另一种可能的实施方式中，上述配置信息还包括第二终端标识。在这种情况下，如601部分中的示例所述，第一终端标识和第二终端标识分别为终端在第一制式网络和第二制式网络中所使用的标识。可选的，第一接入网设备与第二接入网设备可能采用相同或不同的接入技术，例如，第一接入网设备采用第一接入技术，第二接入网设备可能采用第一接入技术或第二接入技术。在一种情况下，若第二接入网设备采用第一接入技术，则第一接入网设备向第二接入网设备发送第一终端标识；对应的，当前驻留在第二接入网设备中的终端使用第一终端标识监听寻呼消息，当监听到寻呼消息携带第一终端标识时，终端确定被第二接入网设备所寻呼。在另一种情况下，若第二接入网设备采用第二接入技术，则第一接入网设备向第二接入网设备发送第二终端标识；对应的，当前驻留在第二接入网设备中的终端使用第二终端标识监听寻呼消息，当监听到寻呼消息携带第二终端标识时，终端确定被第二接入网设备所寻呼。
在一个示例中，第一消息还可以携带接入技术类型信息，该接入技术类型信息用于通知第二接入网设备：为终端分配第一终端标识的第一接入网设备所使用的无线接入技术为第一接入技术；或者，该技术类型信息用于通知第二接入网设备：为终端分配第一终端标识的第一接入网设备与该第二接入网设备所使用的无线接入技术为不同的接入技术。
在一个示例中，第一消息还可以携带指示终端处于第一状态的信息，第二接入网设备可以根据该信息确定终端的状态。
在一个示例中，第一消息还可以携带发送指示，该发送指示用于指示终端是否有数据和/或信令需要发送，第二接入网设备可以根据该发送指示 确定终端是否有数据和/或信令需要发送。
在一个示例中，第一消息还可以携带寻呼区更新指示，第二接入网设备可以根据该寻呼区更新指示确定终端已经移动出上述寻呼区域。例如，在一种场景下，第二接入网设备管理多个小区，该多个小区中的部分小区属于寻呼区域，另一部分小区不属于寻呼区域，当终端移动到不属于寻呼区域的某个小区时，终端可以通过第一消息向第二接入网设备发送寻呼区更新指示，从而第二接入网设备可以根据该寻呼区更新指示确定终端你已经移动出上述寻呼区域。
在一个示例中，终端还可在向第二接入网设备发送第一消息后，接收第二接入网设备发送的连接建立指示；终端可以根据该连接建立指示，向核心网设备发送跟踪区更新命令。具体地，第二接入网设备接收第一消息后可以判断和第二接入网设备和第一接入网设备之间没有接口，则向终端发送连接建立指示，以指示所述终端重新建立连接。终端可以根据该连接建立指示，清除保存的连接上下文以重新建立连接，然后使用重新建立的连接向核心网设备发送跟踪区更新命令，以使得核心网设备根据跟踪区更新命令释放第一接入网与核心网设备之间的连接。
在604部分，第二接入网设备向第一接入网设备发送第一终端标识。
具体的，第二接入网设备可以根据第一消息确定终端从第一接入网设备移动到第二接入网设备，从而向第一接入网设备发送第一终端标识，以便获取终端的上下文。
在一个示例中，上述第一终端标识包括终端ID(identification)和接入网设备ID。当上述第一消息携带接入技术类型信息时，第二接入网设备可以根据第一终端标识和接入技术类型信息，确定终端在移动到第二接入网设备的范围之前所属的接入网设备为第一接入网设备，以便获取终端的上下文。具体的，第二接入网设备可以先根据接入技术类型信息确定终端移动前所属的接入网设备所采用的无线接入技术，然后在使用该无线接入技术的网络内通过接入网设备ID确定移动前所属的接入网设备为第一接入网设备，最后通过终端ID向第一接入网设备获取该终端的上下文。
在一个示例中，第二接入网设备可以通过一个消息来向第一接入网设备发送第一终端标识，为描述方便，将该消息称为第二消息。例如，第二 消息可以是终端信息指示消息、终端位置更新消息或上下文请求消息。在一种可能的实施方式中，第二接入网设备可以根据第一消息是否携带上述指示终端处于第一状态的信息，来确定向第一接入网设备发送第一终端标识所采用的消息。例如，若第一消息携带上述指示终端处于第一状态的信息，则第二接入网采用终端信息指示消息或者终端位置更新消息来向第一接入网设备发送第一终端标识；或者，若第一消息未携带上述指示终端处于第一状态的信息，则第二接入网采用上下文请求消息来向第一接入网设备发送第一终端标识。
在一个示例中，当第一消息携带指示终端处于第一状态的信息时，第二接入网设备还可以在第二消息中携带上述指示终端处于第一状态的信息，以便第一接入网根据所该信息判断终端当前的状态。
在一个示例中，当第一消息携带上述发送指示时，第二接入网设备还可以在第二消息中携带该发送指示，以便第一接入网根据该发送指示判断终端当前是否有数据和/或信令需要发送。
在一个示例中，当第一消息携带寻呼区更新指示时，第二接入网设备还可以在第二消息中携带所述寻呼区更新指示，以便第一接入网根据寻呼区更新指示判断终端当前是否已经移动出寻呼区。
在605部分，第一接入网设备根据第一终端标识向第二接入网设备发送终端的上下文或者终端挂起指示。
在一个示例中，第一接入网设备可以向第二接入网设备发送上下文传递消息，该上下文传递消息携带终端的上下文。其中，该上下文传递消息也可以称为上下文迁移消息。例如，该上下文迁移消息可以为切换消息或者上下文响应消息。
在一个示例中，若第一接入网设备确定将终端转入挂起状态，则可以向第二接入网设备发送终端挂起指示。上述挂起状态是指终端与核心网的接口保持在第一接入网设备但是该接口被去激活。第二接入网设备接收收到终端挂起指示后，可以根据该终端挂起指示向终端发送挂起命令。
在一个示例中，第一接入网设备可以根据第二消息的类型来确定终端的状态。例如，当第二消息为终端信息指示消息或终端位置更新消息时，第一接入网设备可以确定终端处于第一状态。进一步的，若第一接入网设 备确定终端处于第一状态，第一接入网设备可以执行上下文迁移过程或者挂起过程，并向第二接入网发送终端的上下文或者终端挂起指示。
在一种可能的实施方式中，第一接入网设备可以根据第二消息中是否携带上述发送指示或寻呼区更新指示来确定执行上下文迁移过程或挂起过程。例如，若第二消息中携带上述发送指示，则第一接入网设备执行上下文迁移过程；又例如，若第二消息中未携带上述发送指示，则第一接入网设备执行挂起过程；又例如，若第二消息中携带寻呼区更新指示，则第一接入网设备执行挂起过程。
在一个示例中，第一接入网可以根据第二消息是否携带上述指示终端处于第一状态的信息来确定终端的状态。例如，当第二消息携带上述指示终端处于第一状态的信息时，第一接入网设备可以确定终端处于第一状态。进一步的，若第一接入网设备确定终端处于第一状态，第一接入网设备可以执行上下文迁移过程或者挂起过程，并向第二接入网发送终端的上下文或者终端挂起指示。其中，第一接入网设备执行上下文迁移过程或挂起过程的具体实施方式与上一个示例中的上下文迁移过程或挂起过程的实施过程相似，可以参考上一个示例中的详细描述，此处不作赘述。
上述主要从不同网元之间交互的角度对本发明实施例提供的方案进行了介绍。可以理解的是，第一接入网设备、第二接入网设备、核心网设备、终端为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。结合本发明中所公开的实施例描述的各示例的单元及算法步骤，本发明实施例能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。本领域技术人员可以对每个特定的应用来使用不同的方法来实现所描述的功能，但是这种实现不应认为超出本发明实施例的技术方案的范围。
本发明实施例可以根据上述方法示例对第一接入网设备、第二接入网设备、核心网设备、终端等进行功能单元的划分，例如，可以对应各个功能划分各个功能单元，也可以将两个或两个以上的功能集成在一个处理单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。需要说明的是，本发明实施例中对单元的划分是示意性 的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。
在采用集成的单元的情况下，图7示出了本发明实施例中提供的一种第一接入网设备的示意性框图。第一接入网设备700包括：处理单元702和通信单元703。处理单元702用于对第一接入网设备700的动作进行控制管理，例如，处理单元702用于支持第一接入网设备700执行图3中的过程302、306和308，图4中的过程402、404、405和409，图5中的过程502、504、505和509，图6中的过程601和605，和/或用于本文所描述的技术的其它过程。通信单元703用于支持第一接入网设备700和其他网元(例如第二接入网设备、核心网设备等)之间的通信。第一接入网设备700还可以包括存储单元701，用于存储第一接入网设备700的程序代码和数据。
其中，处理单元702可以是处理器或控制器。通信单元703可以是通信接口、收发器或收发电路等，其中，该通信接口是统称，在具体实现中，该通信接口可以包括多个接口，例如可以包括：接入网设备与接入网设备之间的接口、接入网设备与核心网设备之间的接口和/或其他接口。存储单元701可以是存储器。
在采用集成的单元的情况下，图8示出了本发明实施例中提供的一种第二接入网设备的示意性框图。第二接入网设备800包括：处理单元802、第一通信单元803和第二通信单元804。处理单元802用于对第二接入网设备800的动作进行控制管理，例如，处理单元802用于支持第二接入网设备800执行图3中的过程303和305，图4中的过程406、408和410，图5中的过程506和508，图6中的过程604，和/或用于本文所描述的技术的其它过程。第一通信单元803用于支持第二接入网设备800和其他接入网设备或核心网设备之间的通信。第二通信单元用于支持第二接入网设备800与终端之间的通信。第二接入网设备800还可以包括存储单元801，用于存储第二接入网设备800的程序代码和数据。
其中，处理单元802可以是处理器或控制器。第一通信单元803可以是通信接口，其中，该通信接口是统称，在具体实现中，该通信接口可以包括多个接口，例如可以包括：接入网设备与接入网设备之间的接口、接入网设备与核心网设备之间的接口和/或其他接口。第二通信单元可以是收 发器或收发电路等。存储单元801可以是存储器。
当处理单元702为处理器，通信单元703为通信接口，存储单元701为存储器时，本发明实施例所涉及的第一接入网设备的结构可以如图9所示的接入网设备的结构。当处理单元802为处理器，第一通信单元803为通信接口，第二通信单元804为发射器/接收器，存储单元801为存储器时，本发明实施例所涉及的第二接入网设备也可以如图9所示的接入网设备的结构。
图9示出了本发明实施例提供的接入网设备的一种可能的结构示意图。
接入网设备900包括处理器902和通信接口904。其中，处理器902也可以为控制器，图9中表示为“控制器/处理器902”。通信接口904用于支持接入网设备与其他网元(例如其它接入网设备、核心网设备等)进行通信。进一步的，接入网设备900还可以包括发射器/接收器901。所述发射器/接收器901用于支持接入网设备与上述实施例中的所述终端之间收发信息，以及支持所述终端与其他终端之间进行无线电通信。所述处理器902执行各种用于与终端通信的功能。在上行链路，来自所述终端的上行链路信号经由天线接收，由接收器901进行解调(例如将高频信号解调为基带信号)，并进一步由处理器902进行处理来恢复终端所发送到业务数据和信令信息。在下行链路上，业务数据和信令消息由处理器902进行处理，并由发射器901进行调制(例如将基带信号调制为高频信号)来产生下行链路信号，并经由天线发射给终端。需要说明的是，上述解调或调制的功能也可以由处理器902完成。
例如，当该接入网设备900为第一接入网设备时，处理器902还用于执行图3至图6所示方法中涉及第一接入网设备的处理过程和/或本申请所描述的技术方案的其他过程；或者，当该接入网设备900为第二接入网设备时，处理器902还用于执行图3至图6所示方法中涉及第二接入网设备的处理过程和/或本申请所描述的技术方案的其他过程。
进一步的，接入网设备900还可以包括存储器903，存储器903用于存储接入网设备900的程序代码和数据。
可以理解的是，图9仅仅示出了接入网设备900的简化设计。在实际 应用中，接入网设备900可以包含任意数量的发射器，接收器，处理器，控制器，存储器，通信单元等，而所有可以实现本发明实施例的接入网设备都在本发明实施例的保护范围之内。
在采用集成的单元的情况下，图10示出了本发明实施例中所涉及的核心网设备的一种可能的示意性框图。核心网设备1000包括：处理单元1002和通信单元1003。处理单元1002用于对核心网设备的动作进行控制管理，例如，处理单元1002用于支持核心网设备执行图3中的过程301和307，图4中的过程401和410，图5中的过程501，和/或用于本文所描述的技术的其它过程。通信单元1003用于支持核心网设备与其他网络实体的通信。核心网设备还可以包括存储单元1001，用于存储核心网设备的程序代码和数据。
其中，处理单元1002可以是处理器或控制器，例如可以是中央处理器(Central Processing Unit，CPU)，通用处理器，数字信号处理器(Digital Signal Processor，DSP)，专用集成电路(Application-Specific Integrated Circuit，ASIC)，现场可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件或者其任意组合。其可以实现或执行结合本发明公开内容所描述的各种示例性的逻辑方框，模块和电路。所述处理器也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，DSP和微处理器的组合等等。通信单元1303可以是通信接口、收发器或收发电路等，其中，该通信接口是统称，在具体实现中，该通信接口可以包括多个接口，例如可以包括：核心网设备和接入网设备之间的接口和/或其他接口。存储单元1001可以是存储器。
当处理单元1002为处理器，通信单元1003为通信接口，存储单元1001为存储器时，本发明实施例所涉及的核心网设备可以为图11所示的核心网设备。
参阅图11所示，该核心网设备1100包括：处理器1102、通信接口1103、存储器1101。可选的，核心网设备1100还可以包括总线1104。其中，通信接口1103、处理器1102以及存储器1101可以通过总线1104相互连接；总线1104可以是外设部件互连标准(Peripheral Component Interconnect，简称PCI)总线或扩展工业标准结构(Extended Industry  Standard Architecture，简称EISA)总线等。所述总线1104可以分为地址总线、数据总线、控制总线等。为便于表示，图11中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
在采用集成的单元的情况下，图12示出了本发明实施例中提供的一种可能的终端的示意性框图。终端1200包括：处理单元1202和通信单元1203。处理单元1202用于对终端1200的动作进行控制管理，例如，处理单元1202用于支持终端1200执行图3中的过程304，图4中的过程403和407，图5中的过程503和507，图6中的过程602和603，和/或用于本文所描述的技术的其它过程。通信单元1203用于支持终端1200和其他网元之间的通信。终端1200还可以包括存储单元1201，用于存储终端1200的程序代码和数据。
当处理单元1202为处理器，通信单元1203为通信接口，存储单元1201为存储器时，本发明实施例所涉及的终端可以为图13所示的终端。
图13示出了本发明实施例中所涉及的终端的一种可能的设计结构的简化示意图。所述终端1300包括发射器1301，接收器1302和处理器1303。其中，处理器1303也可以为控制器，图13中表示为“控制器/处理器1303”。可选的，所述终端1300还可以包括调制解调处理器1305，其中，调制解调处理器1305可以包括编码器1307、调制器1307、解码器1308和解调器1309。
在一个示例中，发射器1301调节(例如，模拟转换、滤波、放大和上变频等)该输出采样并生成上行链路信号，该上行链路信号经由天线发射给上述实施例中所述的基站。在下行链路上，天线接收上述实施例中基站发射的下行链路信号。接收器1302调节(例如，滤波、放大、下变频以及数字化等)从天线接收的信号并提供输入采样。在调制解调处理器1305中，编码器1307接收要在上行链路上发送的业务数据和信令消息，并对业务数据和信令消息进行处理(例如，格式化、编码和交织)。调制器1307进一步处理(例如，符号映射和调制)编码后的业务数据和信令消息并提供输出采样。解调器1309处理(例如，解调)该输入采样并提供符号估计。解码器1308处理(例如，解交织和解码)该符号估计并提供发送给终端1300的已解码的数据和信令消息。编码器1307、调制器1307、解调器1309和解码 器1308可以由合成的调制解调处理器1305来实现。这些单元根据无线接入网采用的无线接入技术(例如，LTE及其他演进系统的接入技术)来进行处理。需要说明的是，当终端1300不包括调制解调处理器1305时，调制解调处理器1305的上述功能也可以由处理器1303完成。
处理器1303对终端1300的动作进行控制管理，用于执行上述本发明实施例中由终端1300进行的处理过程。例如，处理器1303还用于执行图3至图6所示方法中涉及终端的处理过程和/或本申请所描述的技术方案的其他过程。
进一步的，终端1300还可以包括存储器1304，存储器1304用于存储用于终端1300的程序代码和数据。
结合本发明实施例公开内容所描述的方法或者算法的步骤可以硬件的方式来实现，也可以是由处理器执行软件指令的方式来实现。软件指令可以由相应的软件模块组成，软件模块可以被存放于随机存取存储器(Random Access Memory，RAM)、闪存、只读存储器(Read Only Memory，ROM)、可擦除可编程只读存储器(Erasable Programmable ROM，EPROM)、电可擦可编程只读存储器(Electrically EPROM，EEPROM)、寄存器、硬盘、移动硬盘、只读光盘(CD-ROM)或者本领域熟知的任何其它形式的存储介质中。一种示例性的存储介质耦合至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息。当然，存储介质也可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。另外，该ASIC可以位于基站或终端中。当然，处理器和存储介质也可以作为分立组件存在于基站或终端中。
本领域技术人员应该可以意识到，在上述一个或多个示例中，本发明实施例所描述的功能可以用硬件、软件、固件或它们的任意组合来实现。当使用软件实现时，可以将这些功能存储在计算机可读介质中或者作为计算机可读介质上的一个或多个指令或代码进行传输。计算机可读介质包括计算机存储介质和通信介质，其中通信介质包括便于从一个地方向另一个地方传送计算机程序的任何介质。存储介质可以是通用或专用计算机能够存取的任何可用介质。
以上所述的具体实施方式，对本发明实施例的目的、技术方案和有益 效果进行了进一步详细说明，所应理解的是，以上所述仅为本发明实施例的具体实施方式而已，并不用于限定本发明实施例的保护范围，凡在本发明实施例的技术方案的基础之上，所做的任何修改、等同替换、改进等，均应包括在本发明实施例的保护范围之内。

Claims (30)

  1. 一种通信方法，用于通信系统中，所述通信系统包括寻呼区域，所述寻呼区域内至少包括第一接入网设备和第二接入网设备，所述第一接入网设备与核心网设备具有链路，包括：
    所述第一接入网设备从所述核心网设备接收终端的信令；
    所述第一接入网设备向所述第二接入网设备发送寻呼消息，所述寻呼消息用于寻呼所述终端；
    所述第一接入网设备从所述第二接入网设备接收第一指示信息，所述第一指示信息用于指示所述终端接入所述第二接入网设备。
  2. 根据权利要求1所述的方法，其特征在于，还包括：
    所述第一接入网设备向所述核心网设备发送第二指示信息，所述第二指示信息用于指示所述终端已经移动出所述第一接入网设备的范围。
  3. 根据权利要求2所述的方法，其特征在于，所述第一接入网设备向所述核心网设备发送第二指示信息，包括：
    所述第一接入网设备向所述核心网设备发送所述信令的响应消息，所述响应消息携带所述第二指示信息；或者，
    所述第一接入网设备向所述核心网设备发送信令失败消息，所述信令失败消息携带所述第二指示信息，其中，所述信令失败消息用于指示所述信令未成功发送。
  4. 根据权利要求2或3所述的方法，其特征在于，所述第二指示信息包括所述第二接入网设备的信息和所述终端的状态信息之一或全部，所述状态信息用于指示所述终端所处的状态。
  5. 根据权利要求1所述的方法，其特征在于，还包括：
    所述第一接入网设备向所述第二接入网设备发送所述信令。
  6. 根据权利要求5所述的方法，其特征在于，所述第一接入网设备向所述第二接入网设备发送所述信令，包括：
    所述第一接入网设备向所述第二接入网设备发送上下文传递消息，所述上下文传递消息携带所述信令。
  7. 根据权利要求5或6所述的方法，其特征在于，还包括：
    所述第一接入网设备从所述第二接入网设备接收第一信令处理指示， 所述第一信令处理指示用于指示所述信令处理成功或所述信令处理失败；
    所述第一接入网设备向所述核心网设备发送第二信令处理指示，所述第二信令处理指示用于指示所述信令处理成功或所述信令处理失败。
  8. 根据权利要求7所述的方法，其特征在于，所述第一接入网设备从所述第二接入网设备接收第一信令处理指示，包括：
    所述第一接入网设备从所述第二接入网设备接收上下文传递确认消息，所述上下文传递确认消息携带所述第一信令处理指示。
  9. 一种通信方法，用于通信系统中，所述通信系统包括寻呼区域，所述寻呼区域内至少包括第一接入网设备和第二接入网设备，所述第一接入网设备与核心网设备具有链路，包括：
    所述第二接入网设备从所述第一接入网设备接收第一寻呼消息，所述第一寻呼消息用于寻呼终端；
    所述第二接入网设备向所述终端发送第二寻呼消息；
    所述第二接入网设备从所述终端接收寻呼响应；
    所述第二接入网设备向所述第一接入网设备发送指示信息，所述指示信息用于指示所述终端接入所述第二接入网设备。
  10. 根据权利要求9所述的方法，其特征在于，还包括：
    所述第二接入网设备从所述核心网设备接收所述终端的信令。
  11. 根据权利要求9所述的方法，其特征在于，还包括：
    所述第二接入网设备从所述第一接入网设备接收所述终端的信令。
  12. 根据权利要求11所述的方法，其特征在于，所述第二接入网设备从所述第一接入网设备接收所述终端的信令，包括：
    所述第二接入网设备从所述第一接入网设备接收上下文传递消息，所述上下文传递消息携带所述信令。
  13. 根据权利要求11或12所述的方法，其特征在于，还包括：
    所述第二接入网设备向所述第一接入网设备发送信令处理指示，所述信令处理指示用于指示所述信令处理成功或所述信令处理失败。
  14. 根据权利要求13所述的方法，其特征在于，所述第二接入网设备向所述第一接入网设备发送信令处理指示，包括：
    所述第二接入网设备向所述第一接入网设备发送上下文传递确认消 息，所述上下文传递确认消息携带所述信令处理指示。
  15. 根据权利要求9至14中任一项所述的方法，其特征在于，所述第二接入网设备向所述第一接入网设备发送指示信息，包括：
    所述第二接入网设备向所述第一接入网设备发送终端信息指示消息，所述终端信息指示消息携带所述指示信息；或者，
    所述第二接入网设备向所述第一接入网设备发送终端上下文请求消息，所述终端上下文请求消息携带所述指示信息。
  16. 一种接入网设备，所述接入网设备为第一接入网设备，用于通信系统中，所述通信系统包括寻呼区域，所述寻呼区域内至少包括所述第一接入网设备和第二接入网设备，所述第一接入网设备与核心网设备具有链路，所述第一接入网设备包括：处理单元和通信单元，
    所述处理单元用于通过所述通信单元从所述核心网设备接收终端的信令；以及用于通过所述通信单元向所述第二接入网设备发送寻呼消息，所述寻呼消息用于寻呼所述终端；以及用于通过所述通信单元从所述第二接入网设备接收第一指示信息，所述第一指示信息用于指示所述终端接入所述第二接入网设备。
  17. 根据权利要求16所述的接入网设备，其特征在于，所述处理单元还用于通过所述通信单元向所述核心网设备发送第二指示信息，所述第二指示信息用于指示所述终端已经移动出所述第一接入网设备的范围。
  18. 根据权利要求17所述的接入网设备，其特征在于，所述处理单元具体用于通过所述通信单元向所述核心网设备发送所述信令的响应消息，所述响应消息携带所述第二指示信息；或者，所述处理单元具体用于通过所述通信单元向所述核心网设备发送信令失败消息，所述信令失败消息携带所述第二指示信息，其中，所述信令失败消息用于指示所述信令未成功发送。
  19. 根据权利要求17或18所述的接入网设备，其特征在于，所述第二指示信息包括所述第二接入网设备的信息和所述终端的状态信息之一或全部，所述状态信息用于指示所述终端所处的状态。
  20. 根据权利要求16所述的接入网设备，其特征在于，所述处理单元还用于通过所述通信单元向所述第二接入网设备发送所述信令。
  21. 根据权利要求20所述的接入网设备，其特征在于，所述处理单元具体用于通过所述通信单元向所述第二接入网设备发送上下文传递消息，所述上下文传递消息携带所述信令。
  22. 根据权利要求20或21所述的接入网设备，其特征在于，所述处理单元还用于通过所述通信单元从所述第二接入网设备接收第一信令处理指示，所述第一信令处理指示用于指示所述信令处理成功或所述信令处理失败；以及用于通过所述通信单元向所述核心网设备发送第二信令处理指示，所述第二信令处理指示用于指示所述信令处理成功或所述信令处理失败。
  23. 根据权利要求22所述的接入网设备，其特征在于，所述处理单元具体用于通过所述通信单元从所述第二接入网设备接收上下文传递确认消息，所述上下文传递确认消息携带所述第一信令处理指示。
  24. 一种接入网设备，所述接入网设备为第二接入网设备，用于通信系统中，所述通信系统包括寻呼区域，所述寻呼区域内至少包括第一接入网设备和第二接入网设备，所述第一接入网设备与核心网设备具有链路，所述第二接入网设备包括：处理单元、第一通信单元和第二通信单元，
    所述处理单元用于通过第一通信单元从所述第一接入网设备接收第一寻呼消息，所述第一寻呼消息用于寻呼终端；以及用于通过所述第二通信单元向所述终端发送第二寻呼消息；以及用于通过所述第二通信单元从所述终端接收寻呼响应；以及用于通过所述第一通信单元向所述第一接入网设备发送指示信息，所述指示信息用于指示所述终端接入所述第二接入网设备。
  25. 根据权利要求24所述的接入网设备，其特征在于，所述处理单元还用于通过所述第一通信单元从所述核心网设备接收所述终端的信令。
  26. 根据权利要求24所述的接入网设备，其特征在于，所述处理单元还用于通过所述第一通信单元从所述第一接入网设备接收所述终端的信令。
  27. 根据权利要求26所述的接入网设备，其特征在于，所述处理单元具体用于通过所述第一通信单元从所述第一接入网设备接收上下文传递消息，所述上下文传递消息携带所述信令。
  28. 根据权利要求26或27所述的接入网设备，其特征在于，所述处理单元还用于通过所述第一通信单元向所述第一接入网设备发送信令处理指示，所述信令处理指示用于指示所述信令处理成功或所述信令处理失败。
  29. 根据权利要求28所述的接入网设备，其特征在于，所述处理单元具体用于通过所述第一通信单元向所述第一接入网设备发送上下文传递确认消息，所述上下文传递确认消息携带所述信令处理指示。
  30. 根据权利要求24至29中任一项所述的接入网设备，其特征在于，所述处理单元具体用于通过所述第一通信单元向所述第一接入网设备发送终端信息指示消息，所述终端信息指示消息携带所述指示信息；或者，所述处理单元具体用于通过所述第一通信单元向所述第一接入网设备发送终端上下文请求消息，所述终端上下文请求消息携带所述指示信息。
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