WO2019140561A1 - 一种切换方法及装置、计算机存储介质 - Google Patents
一种切换方法及装置、计算机存储介质 Download PDFInfo
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- WO2019140561A1 WO2019140561A1 PCT/CN2018/072908 CN2018072908W WO2019140561A1 WO 2019140561 A1 WO2019140561 A1 WO 2019140561A1 CN 2018072908 W CN2018072908 W CN 2018072908W WO 2019140561 A1 WO2019140561 A1 WO 2019140561A1
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- access network
- core network
- network element
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- 230000005540 biological transmission Effects 0.000 claims description 19
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- 230000006870 function Effects 0.000 description 13
- 238000010586 diagram Methods 0.000 description 11
- 238000005259 measurement Methods 0.000 description 6
- 238000004891 communication Methods 0.000 description 5
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000010295 mobile communication Methods 0.000 description 2
- 230000006399 behavior Effects 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
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- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/02—Buffering or recovering information during reselection ; Modification of the traffic flow during hand-off
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/14—Reselecting a network or an air interface
- H04W36/144—Reselecting a network or an air interface over a different radio air interface technology
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/34—Reselection control
- H04W36/38—Reselection control by fixed network equipment
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
- H04W36/302—Reselection being triggered by specific parameters by measured or perceived connection quality data due to low signal strength
Definitions
- the present invention relates to the field of wireless communication technologies, and in particular, to a handover method and apparatus, and a computer storage medium.
- a RAN Radio Access Network
- gNB 5G base station
- eNB 4G base station
- 5G Core Network 5G Core Network scenario, as shown in Figure 1.
- 5G base station such as the 5G RAN in FIG.
- HO Require Handover Require
- Handover Require a handover request
- AMF Core Access and Mobility Management Function
- the AMF cannot currently determine that the radio access is performed (RAT, Radio access technology) (ie, 5G CN is unchanged, the base station changes from gNB to eNB) or system switching (ie, the core network changes from 5G CN to EPC).
- RAT Radio access technology
- an embodiment of the present invention provides a handover method and apparatus, and a computer storage medium.
- the first access network element sends a first handover request message to the second access network network element, to trigger the terminal to be handed over by the first access network to the second access network, including:
- the first access network element receives the handover confirmation message sent by the network element of the second access network, and completes that the terminal is handed over to the second access network by the first access network.
- the first handover request message, the handover request acknowledgement message, and the handover confirmation message are transmitted by using the following path:
- the handover request acknowledgement message carries the resource allocated by the second access network for the terminal.
- the data of the terminal is transmitted between the first access network and the first core network by using the forwarding of the second access network, including:
- the second access network After the uplink data of the terminal is sent to the second access network, the second access network forwards the data to the first access network, and in the first access network and the first core Transmission between networks;
- the first access network After the downlink data of the terminal is sent by the first core network to the first access network, the first access network sends the data to the second access network, and passes the second access The network forwards to the terminal.
- the first core network element receives the first access network and sends the first access network.
- a second handover request message where the second handover request message is used to trigger the first core network to switch to the second core network; wherein, after the first core network switches to the second core network, the terminal The data is transmitted between the second access network and the second core network.
- the second handover request message carries a first indication message, where the first indication message is used to indicate that the terminal completes handover by the first access network to the second access network.
- the first core network element receives the second handover request message sent by the first access network, and the second handover request message is used to trigger the first core network to switch to the second core.
- Net including:
- the first core network element After receiving the second handover request message sent by the first access network, the first core network element sends a second indication message to the third core network element, where the second indication message is used to indicate Session management context modification;
- the first core network element sends a third handover request message to the second core network element to trigger the second core network element to establish a target link in the second core network.
- the second core network element establishes a target link in the second core network, including:
- the second core network element establishes a link channel with the fourth core network element
- the second core network element establishes a link channel with the second access network element.
- the method further includes:
- the second core network element notifies the sixth core network element to perform user plane path switching.
- the data of the terminal is transmitted between the second access network and the second core network, including:
- the second access network After the uplink data of the terminal is sent to the second access network, the second access network sends the uplink data to the second core network;
- the downlink data of the terminal is sent by the second core network to the second access network, and then sent by the second access network to the terminal.
- a first sending unit configured to send a first handover request message to the second access network network element, to trigger the terminal to be handed over by the first access network to the second access network, and maintain the first access network and the first The connection of a core network is unchanged; wherein data of the terminal is transmitted between the first access network and the first core network by forwarding of the second access network;
- a second sending unit configured to send a second handover request message to the first core network element, to trigger the first core network to switch to the second core network, where the data of the terminal is in the second access Transmission between the network and the second core network.
- the device further includes:
- a first receiving unit configured to receive a handover request acknowledgement message sent by the second access network network element
- a third sending unit configured to send a handover command to the terminal, so that the terminal sends a handover complete message to the second access network network element;
- the second receiving unit is configured to receive a handover confirmation message sent by the network element of the second access network, and complete the handover of the terminal by the first access network to the second access network.
- the first handover request message, the handover request acknowledgement message, and the handover confirmation message are transmitted by using the following path:
- the handover request acknowledgement message carries the resource allocated by the second access network for the terminal.
- the data of the terminal is transmitted between the first access network and the first core network by using the forwarding of the second access network, including:
- the second access network After the uplink data of the terminal is sent to the second access network, the second access network forwards the data to the first access network, and in the first access network and the first core Transmission between networks;
- the first access network After the downlink data of the terminal is sent by the first core network to the first access network, the first access network sends the data to the second access network, and passes the second access The network forwards to the terminal.
- a first receiving unit configured to: after the terminal is switched by the first access network to the second access network, and after the connection between the first access network and the first core network is kept unchanged, receiving the first access network Sending a second handover request message, where the second handover request message is used to trigger the first core network to switch to the second core network; where the first core network switches to the second core network, The data of the terminal is transmitted between the second access network and the second core network.
- the second handover request message carries a first indication message, where the first indication message is used to indicate that the terminal completes handover to the second access network by the first access network.
- the device further includes:
- a first sending unit configured to send a second indication message to the third core network element, where the second indication message is used to indicate that the session management context is modified;
- a second sending unit configured to send a third handover request message to the second core network element to trigger the second core network element to establish a target link in the second core network.
- the second core network element establishes a target link in the second core network, including:
- the second core network element establishes a link channel with the fourth core network element
- the second core network element establishes a link channel with the second access network element.
- the device further includes:
- a second receiving unit configured to receive a target link setup complete message sent by the second core network element
- the notification unit is configured to notify the fifth core network element to perform user plane path switching.
- the data of the terminal is transmitted between the second access network and the second core network, including:
- the second access network After the uplink data of the terminal is sent to the second access network, the second access network sends the uplink data to the second core network;
- the downlink data of the terminal is sent by the second core network to the second access network, and then sent by the second access network to the terminal.
- the computer storage medium provided by the embodiment of the present invention has stored thereon computer executable instructions, and the computer executable instructions are implemented by the processor to implement the foregoing switching method.
- the first access network element sends a first handover request message to the second access network element to trigger the terminal to be handed over from the first access network to the second access network, and keep The connection between the first access network and the first core network is unchanged; wherein, the data of the terminal is forwarded by the second access network in the first access network and the first core network Transmitting; the first access network element sends a second handover request message to the first core network element to trigger the first core network to switch to the second core network; wherein the data of the terminal is in the Transmitting between the second access network and the second core network.
- the access network is switched first, and then the core network is switched. The step-by-step switching mode improves the reliability of the handover, reduces the service delay, and improves the user experience.
- 1 is a connection architecture diagram of an access network and a core network in NG;
- FIG. 2 is a schematic flowchart of System switching in a connected state scenario (ie, a core network changes from 5G CN to EPC);
- FIG. 3 is a schematic flowchart of System switching in an idle state scenario, that is, a core network is changed from a 5G CN to an EPC;
- FIG. 4 is a schematic diagram of a handover process of an N26 interface between an EPC and a 5G CN;
- FIG. 5 is a schematic flowchart 1 of a handover method according to an embodiment of the present invention.
- FIG. 6 is a second schematic flowchart of a handover method according to an embodiment of the present invention.
- FIG. 7 is a schematic flowchart 3 of a handover method according to an embodiment of the present invention.
- FIG. 8 is a first schematic structural diagram of a switching device according to an embodiment of the present invention.
- FIG. 9 is a second schematic structural diagram of a switching device according to an embodiment of the present invention.
- FIG. 10 is a schematic structural diagram of a computer device according to an embodiment of the present invention.
- the following describes the handover procedure in conjunction with the presence of an N26 interface between the EPC and the 5G CN.
- Figure 2 is a schematic diagram of the process of the system switching in the connected mode (that is, the core network changes from 5G CN to EPC)
- Figure 3 is a schematic diagram of the system switching in the idle mode (that is, the core network changes from 5G CN to EPC).
- the definitions of the network elements involved in Figures 2 and 3 are as follows:
- UE terminal, User Equipment
- E-UTRAN Evolved Universal Terrestrial Radio Access Network
- Evolved Universal Terrestrial Radio Access Network Evolved Universal Terrestrial Radio Access Network
- 5G-RAN 5G core network, 5G Radio Access Network;
- AMF Receive Core Access and Mobility Management, Core Access and Mobility Management Function
- MME Mobility Management Entity
- SGW Service Gateway, Serving GateWay;
- PGW-C Packet Data Gateway - Control Plane, Packet Data Network GateWay-Control plane;
- SMF session management function, Session Management Function
- PGW-U Packet Data Gateway - User Plane, Packet Data Network GateWay-User plane;
- UPF User plane function, User Plane Function
- the timing of triggering the handover is determined by the 5G-RAN according to the measurement threshold.
- the handover request command is sent to the AMF of the 5G core network (ie, step 1), the 5G core network side prepares resources with the 4G core network side, and then the 5G-RAN sends the handover to the terminal.
- Command ie, step 11b to switch the UE to the 4G network.
- the UE sends a tracking area update request (TAU Request) to the MME of the 4G core network, and the MME is responsible for obtaining relevant context information to the 5G core network, and completing the 4G core network.
- TAU Request tracking area update request
- FIG. 4 is a schematic diagram of a switching process of an N26 interface between an EPC and a 5G CN.
- the behavior of the UE is specified as two types:
- the UE performs an attach with handover flag (Attach with Handover flag) and carries the corresponding PDU session in the 5G system.
- An access point (APN)/data network (DNN) (such as step 5 in FIG. 4)
- the attach request message will trigger the network side to find the corresponding AP according to the APN/DNN used by the UE.
- the tracking area update request (TAU Request) is directly performed (step 1 and step 2 in FIG. 4).
- the network side will send a Tracking Area Update Reject (TAU Reject) message to the UE, and then the UE will initiate a normal attach procedure. In this case, the IP address consistency of the session cannot be guaranteed.
- the embodiment of the invention provides a handover method.
- the handover is performed in two steps. The first step is to first switch the source access network of the terminal to the target access network; the second step is to switch the source core network of the terminal to the target core network.
- the first access network refers to a source access network
- the second access network refers to a target access network
- the first core network refers to a source core network
- the second core network refers to a target core network.
- the source access network and the source core network are used as the 5G system
- the target access network and the target core network are used as the 4G system. It should be understood that the source access network and the source core network are not limited to the 5G system, and the target access network and the target core network are not limited to the 4G system.
- the first access network element refers to the source access network element.
- the second access network element refers to the target access network element.
- the first core network element refers to AMF
- the third core network element refers to SMF+PGW-C (ie, SMF/PGW-C)
- the fifth core network element refers to UPF+PGW-U. (also known as UPF/PGW-U).
- the second core network element refers to the MME
- the fourth core network element refers to the SGW
- the sixth core network element refers to the UPF+PGW-U (ie, UPF/PGW-U).
- FIG. 5 is a schematic flowchart 1 of a handover method according to an embodiment of the present invention. As shown in FIG. 5, the handover method includes the following steps:
- Step 501 The first access network element sends a first handover request message to the second access network network element, to trigger the terminal to be handed over by the first access network to the second access network, and keep the first access
- the connection between the network and the first core network is unchanged; wherein data of the terminal is transmitted between the first access network and the first core network by forwarding of the second access network.
- the first access network element receives the measurement report sent by the terminal, and determines that the core network handover needs to be performed based on the measurement report.
- the core network switching is performed in two steps, and the first step is to perform the switching of the access network, that is, when the terminal is switched from the first access network to the second access network, The connection between the first access network and the first core network is kept unchanged.
- the process for the terminal to be handed over from the first access network to the second access network is as follows:
- the first access network network element sends a first handover request message to the second access network network element
- the first access network network element receives a handover request acknowledgement message sent by the second access network network element
- the first access network network element sends a handover command to the terminal, so that the terminal sends a handover complete message to the second access network network element;
- the first access network element receives the handover confirmation message sent by the network element of the second access network, and completes that the terminal is handed over to the second access network by the first access network.
- the first handover request message, the handover request acknowledgement message, and the handover confirmation message are transmitted by using the following path:
- the handover request acknowledgement message carries the resource allocated by the second access network to the terminal.
- the data of the terminal is transmitted between the first access network and the first core network by using the forwarding of the second access network, including:
- Step 502 The first access network element sends a second handover request message to the first core network element to trigger the first core network to switch to the second core network, where the data of the terminal is in the Transmitting between the second access network and the second core network.
- the process of switching the first core network to the second core network is as follows:
- the first core network element After receiving the second handover request message sent by the first access network, the first core network element sends a second indication message to the third core network element, where the second indication message is used. Instructing to perform session management context modification;
- the first core network element sends a third handover request message to the second core network element to trigger the second core network element to establish a target link in the second core network.
- the second core network element establishes a target link in the second core network, including:
- the second core network element establishes a link channel with the fourth core network element
- the second core network element establishes a link channel with the second access network element.
- the first core network element receives the target link setup complete message sent by the second core network element, and notifies the fifth core network element to perform user plane path switching; and/or the second The core network element notifies the sixth core network element to perform user plane path switching.
- the data of the terminal is transmitted between the second access network and the second core network, including:
- FIG. 6 is a schematic flowchart 2 of a handover method according to an embodiment of the present invention. As shown in FIG. 6 , the handover method includes the following steps:
- Step 601 The terminal is switched by the first access network to the second access network, and after the connection between the first access network and the first core network is kept unchanged, the first core network element receives the first access network.
- a second handover request message sent by the network where the second handover request message is used to trigger the first core network to switch to the second core network; wherein, after the first core network switches to the second core network, The data of the terminal is transmitted between the second access network and the second core network.
- the second handover request message carries a first indication message, where the first indication message is used to indicate that the terminal completes handover by the first access network to the second access network.
- the process of switching the first core network to the second core network is as follows:
- the first core network element After receiving the second handover request message sent by the first access network, the first core network element sends a second indication message to the third core network element, where the second indication message is used. Instructing to perform session management context modification;
- the first core network element sends a third handover request message to the second core network element to trigger the second core network element to establish a target link in the second core network.
- the second core network element establishes a target link in the second core network, including:
- the second core network element establishes a link channel with the fourth core network element
- the second core network element establishes a link channel with the second access network element.
- the first core network element receives the target link setup complete message sent by the second core network element, and notifies the fifth core network element to perform user plane path switching; and/or the second The core network element notifies the sixth core network element to perform user plane path switching.
- the data of the terminal is transmitted between the second access network and the second core network, including:
- FIG. 7 is a schematic flowchart 3 of a handover method according to an embodiment of the present invention. As shown in FIG. 7, the handover method includes the following steps:
- Step 1 The UE performs measurement on the neighboring cell, and reports the measurement report (MR) to the S-gNB when the measurement report reporting condition preset by the network is met.
- MR measurement report
- the S-gNB is a source access network element of the UE.
- the S-gNB After receiving the MR sent by the UE, the S-gNB determines that the system switching needs to be performed according to the MR.
- step 2 the S-gNB sends a handover request message (HO request) to the T-eNB.
- HO request handover request message
- the T-eNB is a target access network element of the UE.
- Step 3 The T-eNB sends a handover request acknowledgement message (HO request ACK) to the S-gNB, where the T-eNB carries the resource allocated by the terminal.
- HO request ACK handover request acknowledgement message
- Step 4 The S-gNB sends a handover command (HO command) to the UE.
- HO command handover command
- step 5 the UE sends a handover complete message (HO complete) to the T-eNB.
- Step 6 After receiving the handover complete message sent by the UE, the T-eNB sends a handover confirm message (HO confirm) to the S-gNB.
- HO confirm handover confirm
- step 2 if there is no direct interface between the S-gNB and the T-eNB, the messages in step 2, step 3, and step 6 can be forwarded through the AMF and the MME.
- Step 7 After receiving the handover complete message sent by the T-eNB, the S-gNB sends a core network link switch request to the AMF.
- the core network link switch request may carry an indication message that the air interface has been switched completed. .
- the S-gNB will forward the user plane data sent to the UE to the T-eNB from step 7, and the T-eNB sends the data to the UE; the T-eNB forwards the received UE data to the S-gNB, S-gNB.
- the terminal's data is sent to the AMF (path 2 in Figure 7).
- step 8 the AMF sends a session management context modification indication to the SMF/PGW-C requesting to modify the session context.
- step 9 the AMF sends a handover request message to the MME, requesting the MME to establish a target link.
- step 10 the MME establishes a link channel with the SGW.
- step 11 the MME establishes a link channel with the T-eNB.
- step 12 the MME notifies the AMF that the target link channel is established.
- step 13a+13b or step 14a+14b the AMF or the MME notifies the UPF/PGW-U to perform user plane path switching through the SMF/PGW-C or the SGW, respectively.
- the data of the UE and the network are transmitted through the target network link (path 3 in Fig. 7).
- FIG. 8 is a first schematic structural diagram of a switching device according to an embodiment of the present invention. As shown in FIG. 8, the switching device includes:
- the first sending unit 801 is configured to send a first handover request message to the second access network network element, to trigger the terminal to be handed over by the first access network to the second access network, and maintain the first access network and The connection of the first core network is unchanged; wherein data of the terminal is transmitted between the first access network and the first core network by forwarding of the second access network;
- the second sending unit 802 is configured to send a second handover request message to the first core network element to trigger the first core network to switch to the second core network, where the data of the terminal is in the second connection
- the network is transmitted between the network and the second core network.
- the device further includes:
- the first receiving unit 803 is configured to receive a handover request acknowledgement message sent by the second access network network element.
- the third sending unit 804 is configured to send a handover command to the terminal, so that the terminal sends a handover complete message to the second access network network element;
- the second receiving unit 805 is configured to receive a handover confirmation message sent by the second access network network element, and complete the handover of the terminal by the first access network to the second access network.
- the first handover request message, the handover request acknowledgement message, and the handover confirmation message are transmitted by using the following path:
- the handover request acknowledgement message carries the resource allocated by the second access network to the terminal.
- the data of the terminal is transmitted between the first access network and the first core network by using the forwarding of the second access network, including:
- the second access network After the uplink data of the terminal is sent to the second access network, the second access network forwards the data to the first access network, and in the first access network and the first core Transmission between networks;
- the first access network After the downlink data of the terminal is sent by the first core network to the first access network, the first access network sends the data to the second access network, and passes the second access The network forwards to the terminal.
- the implementation functions of the units in the switching apparatus shown in FIG. 8 can be understood by referring to the related description of the foregoing switching method.
- the functions of the units in the switching device shown in FIG. 8 can be realized by a program running on the processor, or can be realized by a specific logic circuit.
- FIG. 9 is a second schematic structural diagram of a switching apparatus according to an embodiment of the present invention. As shown in FIG. 9, the switching apparatus includes:
- the first receiving unit 901 is configured to receive the first access network after the terminal is switched by the first access network to the second access network, and the connection between the first access network and the first core network is kept unchanged. a second handover request message sent by the network, where the second handover request message is used to trigger the first core network to switch to the second core network; wherein, after the first core network switches to the second core network, The data of the terminal is transmitted between the second access network and the second core network.
- the second handover request message carries a first indication message, where the first indication message is used to indicate that the terminal completes handover by the first access network to the second access network.
- the device further includes:
- the first sending unit 902 is configured to send a second indication message to the third core network element, where the second indication message is used to indicate that the session management context is modified.
- the second sending unit 903 is configured to send a third handover request message to the second core network element to trigger the second core network element to establish a target link in the second core network.
- the second core network element establishes a target link in the second core network, including:
- the second core network element establishes a link channel with the fourth core network element
- the second core network element establishes a link channel with the second access network element.
- the device further includes:
- the second receiving unit 904 is configured to receive a target link setup complete message sent by the second core network element.
- the notification unit 905 is configured to notify the fifth core network element to perform user plane path switching.
- the data of the terminal is transmitted between the second access network and the second core network, including:
- the second access network After the uplink data of the terminal is sent to the second access network, the second access network sends the uplink data to the second core network;
- the downlink data of the terminal is sent by the second core network to the second access network, and then sent by the second access network to the terminal.
- the above switching device can also be stored in a computer readable storage medium if it is implemented in the form of a software function module and sold or used as a stand-alone product.
- the technical solution of the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product stored in a storage medium, including a plurality of instructions.
- a computer device (which may be a personal computer, server, or network device, etc.) is caused to perform all or part of the methods described in various embodiments of the present invention.
- the foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read only memory (ROM), a magnetic disk, or an optical disk.
- program codes such as a USB flash drive, a mobile hard disk, a read only memory (ROM), a magnetic disk, or an optical disk.
- the embodiment of the present invention further provides a computer storage medium, wherein the computer-executable instructions are stored, and the computer-executable instructions are executed by the processor to implement the foregoing switching method of the embodiment of the present invention.
- FIG. 10 is a schematic structural diagram of a computer device according to an embodiment of the present invention.
- the computer device may be a terminal or a network device.
- computer device 100 may include one or more (only one shown) processor 1002 (processor 1002 may include, but is not limited to, a Micro Controller Unit (MCU) or a programmable logic device.
- a processing device such as an FPGA (Field Programmable Gate Array), a memory 1004 for storing data, and a transmission device 1006 for a communication function.
- FPGA Field Programmable Gate Array
- FIG. 10 is merely illustrative and does not limit the structure of the above electronic device.
- computer device 100 may also include more or fewer components than shown in FIG. 10, or have a different configuration than that shown in FIG.
- the memory 1004 can be used to store software programs and modules of application software, such as program instructions/modules corresponding to the method in the embodiment of the present invention, and the processor 1002 executes various functional applications by running software programs and modules stored in the memory 1004. And data processing, that is, to achieve the above method.
- Memory 1004 can include high speed random access memory, and can also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid state memory.
- memory 1004 can further include memory remotely located relative to processor 1002, which can be connected to computer device 100 over a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.
- Transmission device 1006 is for receiving or transmitting data via a network.
- the network specific examples described above may include a wireless network provided by a communication provider of computer device 100.
- the transmission device 1006 includes a Network Interface Controller (NIC) that can be connected to other network devices through a base station to communicate with the Internet.
- the transmission device 1006 can be a radio frequency (RF) module for communicating with the Internet wirelessly.
- NIC Network Interface Controller
- RF radio frequency
- the disclosed method and smart device may be implemented in other manners.
- the device embodiments described above are merely illustrative.
- the division of the unit is only a logical function division.
- there may be another division manner such as: multiple units or components may be combined, or Can be integrated into another system, or some features can be ignored or not executed.
- the coupling, or direct coupling, or communication connection of the components shown or discussed may be indirect coupling or communication connection through some interfaces, devices or units, and may be electrical, mechanical or other forms. of.
- the units described above as separate components may or may not be physically separated, and the components displayed as the unit may or may not be physical units, that is, may be located in one place or distributed to multiple network units; Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
- each functional unit in each embodiment of the present invention may be integrated into one second processing unit, or each unit may be separately used as one unit, or two or more units may be integrated into one unit;
- the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
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Abstract
Description
Claims (23)
- 一种切换方法,所述方法包括:第一接入网网元向第二接入网网元发送第一切换请求消息,以触发终端由第一接入网切换到第二接入网,且保持所述第一接入网和第一核心网的连接不变;其中,所述终端的数据经所述第二接入网的转发在所述第一接入网和所述第一核心网之间传输;所述第一接入网网元向第一核心网网元发送第二切换请求消息,以触发所述第一核心网切换到第二核心网;其中,所述终端的数据在所述第二接入网和所述第二核心网之间传输。
- 根据权利要求1所述的方法,其中,所述第一接入网网元向第二接入网网元发送第一切换请求消息,以触发终端由第一接入网切换到第二接入网,包括:所述第一接入网网元向所述第二接入网网元发送第一切换请求消息;所述第一接入网网元接收所述第二接入网网元发送的切换请求确认消息;所述第一接入网网元向所述终端发送切换命令,从而所述终端向所述第二接入网网元发送切换完成消息;所述第一接入网网元接收所述第二接入网网元发送的切换确认消息,完成所述终端由所述第一接入网切换到所述第二接入网。
- 根据权利要求2所述的方法,其中,所述第一切换请求消息、所述切换请求确认消息以及所述切换确认消息,通过以下路径传输:通过所述第一接入网网元与所述第二接入网网元之间的直接接口进行传输;或者,通过所述第一接入网网元与所述第二接入网网元之间的所述第一核心网网元和第二核心网网元进行转发。
- 根据权利要求2或3所述的方法,其中,所述切换请求确认消息中携带所述第二接入网为所述终端分配的资源。
- 根据权利要求1至4任一项所述的方法,其中,所述终端的数据经所述第二接入网的转发在所述第一接入网和所述第一核心网之间传输,包括:所述终端的上行数据发送至所述第二接入网后,由所述第二接入网转发至所述第一接入网,并在所述第一接入网和所述第一核心网之间传输;所述终端的下行数据由所述第一核心网发送至所述第一接入网后,由所述第一接入网发送至所述第二接入网,并通过所述第二接入网转发 至所述终端。
- 一种切换方法,所述方法包括:终端由第一接入网切换到第二接入网,且保持所述第一接入网和第一核心网的连接不变后,第一核心网网元接收第一接入网网发送的第二切换请求消息,所述第二切换请求消息用于触发所述第一核心网切换到第二核心网;其中,所述第一核心网切换到所述第二核心网后,所述终端的数据在所述第二接入网和所述第二核心网之间传输。
- 根据权利要求6所述的方法,其中,所述第二切换请求消息中携带第一指示消息,所述第一指示消息用于指示终端完成由所述第一接入网切换到所述第二接入网。
- 根据权利要求6所述的方法,其中,所述第一核心网网元接收第一接入网网发送的第二切换请求消息,所述第二切换请求消息用于触发所述第一核心网切换到第二核心网,包括:所述第一核心网网元接收到所述第一接入网网发送的第二切换请求消息后,向第三核心网网元发送第二指示消息,所述第二指示消息用于指示进行会话管理上下文修改;所述第一核心网网元向所述第二核心网网元发送第三切换请求消息,以触发所述第二核心网网元建立所述第二核心网中的目标链路。
- 根据权利要求8所述的方法,其中,所述第二核心网网元建立所述第二核心网中的目标链路,包括:所述第二核心网网元建立与第四核心网网元之间的链路通道;所述第二核心网网元建立与所述第二接入网网元之间的链路通道。
- 根据权利要求8或9所述的方法,其中,所述第二核心网网元建立所述第二核心网中的目标链路后,所述方法还包括:所述第一核心网网元接收所述第二核心网网元发送的目标链路建立完成消息,并通知第五核心网网元进行用户面路径切换;和/或,所述第二核心网网元通知第六核心网网元进行用户面路径切换。
- 根据权利要求6至10任一项所述的方法,其中,所述终端的数据在所述第二接入网和所述第二核心网之间传输,包括:所述终端的上行数据发送至所述第二接入网后,由所述第二接入网发送至所述第二核心网;所述终端的下行数据由所述第二核心网发送至所述第二接入网后,由所述第二接入网发送至所述终端。
- 一种切换装置,所述装置包括:第一发送单元,用于向第二接入网网元发送第一切换请求消息,以触发终端由第一接入网切换到第二接入网,且保持所述第一接入网和第一核心网的连接不变;其中,所述终端的数据经所述第二接入网的转发在所述第一接入网和所述第一核心网之间传输;第二发送单元,用于向第一核心网网元发送第二切换请求消息,以触发所述第一核心网切换到第二核心网;其中,所述终端的数据在所述第二接入网和所述第二核心网之间传输。
- 根据权利要求12所述的装置,其中,所述装置还包括:第一接收单元,用于接收所述第二接入网网元发送的切换请求确认消息;第三发送单元,用于向所述终端发送切换命令,从而所述终端向所述第二接入网网元发送切换完成消息;第二接收单元,用于接收所述第二接入网网元发送的切换确认消息,完成所述终端由所述第一接入网切换到所述第二接入网。
- 根据权利要求13所述的装置,其中,所述第一切换请求消息、所述切换请求确认消息以及所述切换确认消息,通过以下路径传输:通过所述第一接入网网元与所述第二接入网网元之间的直接接口进行传输;或者,通过所述第一接入网网元与所述第二接入网网元之间的所述第一核心网网元和第二核心网网元进行转发。
- 根据权利要求13或14所述的装置,其中,所述切换请求确认消息中携带所述第二接入网为所述终端分配的资源。
- 根据权利要求12至15任一项所述的装置,其中,所述终端的数据经所述第二接入网的转发在所述第一接入网和所述第一核心网之间传输,包括:所述终端的上行数据发送至所述第二接入网后,由所述第二接入网转发至所述第一接入网,并在所述第一接入网和所述第一核心网之间传输;所述终端的下行数据由所述第一核心网发送至所述第一接入网后,由所述第一接入网发送至所述第二接入网,并通过所述第二接入网转发至所述终端。
- 一种切换装置,所述装置包括:第一接收单元,用于在终端由第一接入网切换到第二接入网,且保持所述第一接入网和第一核心网的连接不变后,接收第一接入网网发送的第二切换请求消息,所述第二切换请求消息用于触发所述第一核心网切换到第二核心网;其中,所述第一核心网切换到所述第二核心网后,所述终端的数据在所述第二接入网和所述第二核心网之间传输。
- 根据权利要求17所述的装置,其中,所述第二切换请求消息中携带第一指示消息,所述第一指示消息用于指示终端完成由所述第一接入网切换到所述第二接入网
- 根据权利要求17所述的装置,其中,所述装置还包括:第一发送单元,用于向第三核心网网元发送第二指示消息,所述第 二指示消息用于指示进行会话管理上下文修改;第二发送单元,用于向所述第二核心网网元发送第三切换请求消息,以触发所述第二核心网网元建立所述第二核心网中的目标链路。
- 根据权利要求19所述的装置,其中,所述第二核心网网元建立所述第二核心网中的目标链路,包括:所述第二核心网网元建立与第四核心网网元之间的链路通道;所述第二核心网网元建立与所述第二接入网网元之间的链路通道。
- 根据权利要求19或20所述的装置,其中,所述装置还包括:第二接收单元,用于接收所述第二核心网网元发送的目标链路建立完成消息;通知单元,用于通知第五核心网元进行用户面路径切换。
- 根据权利要求17至21任一项所述的装置,其中,所述终端的数据在所述第二接入网和所述第二核心网之间传输,包括:所述终端的上行数据发送至所述第二接入网后,由所述第二接入网发送至所述第二核心网;所述终端的下行数据由所述第二核心网发送至所述第二接入网后,由所述第二接入网发送至所述终端。
- 一种计算机存储介质,其上存储有计算机可执行指令,该计算机可执行指令被处理器执行时实现权利要求1至5任一项所述的方法步骤,或者权利要求6至11任一项所述的方法步骤。
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CN201880085956.2A CN111567085A (zh) | 2018-01-16 | 2018-01-16 | 一种切换方法及装置、计算机存储介质 |
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