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WO2010037313A1 - Procédé, système et dispositif d'accès de transfert cellulaire inter-réseaux - Google Patents

Procédé, système et dispositif d'accès de transfert cellulaire inter-réseaux Download PDF

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Publication number
WO2010037313A1
WO2010037313A1 PCT/CN2009/073962 CN2009073962W WO2010037313A1 WO 2010037313 A1 WO2010037313 A1 WO 2010037313A1 CN 2009073962 W CN2009073962 W CN 2009073962W WO 2010037313 A1 WO2010037313 A1 WO 2010037313A1
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WIPO (PCT)
Prior art keywords
terminal
information
access network
network device
target
Prior art date
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PCT/CN2009/073962
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English (en)
Chinese (zh)
Inventor
钟鑫
扈曙辉
赵洁
刘清顺
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Publication of WO2010037313A1 publication Critical patent/WO2010037313A1/fr
Anticipated expiration legal-status Critical
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Classifications

    • 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
    • H04W36/1443—Reselecting a network or an air interface over a different radio air interface technology between licensed networks

Definitions

  • the embodiments of the present invention relate to a wireless communication technology, and in particular, to an inter-network handover method and system, and an access network device. Background technique
  • Network interworking between networks developed by different standardization organizations for example: Network interworking between networks developed by 3GPP standardization organizations and networks established by non-3GPP standardization organizations is a hot topic in current standards organization discussions, which has received much attention.
  • LTE Long Term Evolution
  • eHRPD evolved high rate packet data
  • Multimode terminals support cross-network switching between multiple networks.
  • the dual-mode terminal supporting the LTE/eHRPD network is a dual-mode terminal with single-shot and dual-receiver.
  • a single-mode dual-received dual-mode terminal transmits and receives data on one network, it is impossible to perform registration, authentication, or session negotiation on another network at the same time, so that when the terminal performs cross-network handover, terminal registration must be performed first. , authentication or conversational negotiation.
  • These processes usually take a few seconds, causing data transmission interruption, which greatly affects the quality of service of real-time services (such as Vo IP voice services) during inter-network handover.
  • the terminal may be pre-registered in the target network through the source network resource and the interface between the source network and the target network when the terminal is still located at the source network side; When the terminal is still located on the source network side, while transmitting and receiving data, the registration, authentication, or session negotiation of the target network is performed through the interface between the source network and the target network. In this way, when the terminal actually performs the cross-network handover, the terminal can immediately start to send and receive data on the target network, thereby shortening the time for the service interruption due to the cross-network handover.
  • the handover process of the terminal from the LTE network to the eHRPD network includes a "pre-registration” process and a handover execution process.
  • the terminal first performs "pre-registration" of the eHRPD network on the LTE network.
  • Each LTE network base station (Evo lved Node B, hereinafter referred to as eNB) in the pre-registration area is provided with sector identification information (Sec tor lD) of the eHRPD network; the sector identification information is statically configured on the eNB. .
  • the terminal When the terminal performs the handover execution process, that is, when the terminal actually initiates the handover operation from the LTE network to the eHRPD network, the terminal located on the LTE network side sends the handover information to the target network side corresponding to the sector identification information statically configured in the eNB.
  • the base station (hereinafter referred to as an endpoint access network device) allocates eHRPD radio resource information to the terminal by the endpoint access network device.
  • the inventor finds that if the eHRPD endpoint access network device is not the target access network device, the handover of the terminal from the source network (LTE) to the target network (eHRPD) fails, and therefore, the prior art terminal crosses. The network switching success rate is low. Summary of the invention
  • the embodiments of the present invention provide an inter-network handover method and system, and an access network device, which are used to improve the success rate of terminal cross-network handover.
  • An embodiment of the present invention provides an inter-network handover method, including:
  • the endpoint access network device that receives the terminal handover information forwarded by the source network side device is different from the target access network device to which the target sector is to be switched,
  • the switching information received by the endpoint access network device is sent to the target access network device, and the target access network device allocates the radio resource of the target network to the terminal, and forwards the radio resource to the terminal through the source network side device, thereby solving the receiving source network side.
  • the cross-network handover problem of the terminal from the source network to the target network improves the terminal cross The success rate of network switching.
  • An embodiment of the present invention further provides an access network device, including:
  • a parsing module configured to obtain, according to the received handover information of the terminal that is forwarded by the source network device, the target access network device information
  • a determining module configured to determine, according to the target access network device information, whether the target access network device is an access network device
  • a communication module configured to: when the target access network device is different from the local access network device, send the handover information to the target access network device; and receive the target access network device according to the handover information
  • the radio resource information allocated to the terminal, and the radio resource information is forwarded to the terminal by the source network side device.
  • the source network side device is used by the communication module.
  • the forwarded terminal switching information is sent to the target access network device, and the target access network device allocates the wireless resource information to the terminal through the source network side device, thereby solving the terminal switching information forwarded by the receiving source network side device.
  • the access network device is different from the target access network device to which the target sector to which the terminal is actually switched (that is, the access network device is different from the target access network device)
  • the terminal crosses the network from the source network to the target network. Switching problems improve the success rate of terminal cross-network switching.
  • An embodiment of the present invention further provides another access network device, including:
  • a receiving module configured to receive a terminal cut by the source network side device sent by the endpoint access network device Change information
  • a radio resource allocation module configured to allocate a radio resource to the terminal according to the handover information
  • a sending module configured to send the radio resource information to the source network side device, and trigger the source network side device to forward the Transmitting the radio resource information to the terminal; or transmitting the radio resource information to the endpoint access network device, triggering the endpoint access network device to forward the radio resource information to the Said terminal.
  • the triggering the wireless resource allocation module allocates the wireless resource to the terminal, and the wireless device
  • the resource information is directly forwarded to the terminal through the source network side device or forwarded to the terminal through the source network side device, thereby solving the endpoint access network device and the terminal when receiving the terminal handover information forwarded by the source network side device.
  • the target access network device to which the target sector to be actually switched belongs is different (that is, the endpoint access network device is different from the access network device)
  • the terminal crosses the network from the source network to the target network, and the terminal crosses. The success rate of network switching.
  • the embodiment of the present invention further provides an inter-network handover system, including a terminal and a source network side device, and an endpoint access network device and a target access network device, where the endpoint access network device and the target access network device are located.
  • an inter-network handover system including a terminal and a source network side device, and an endpoint access network device and a target access network device, where the endpoint access network device and the target access network device are located.
  • Target network side including a terminal and a source network side device, and an endpoint access network device and a target access network device, where the endpoint access network device and the target access network device are located.
  • the terminal is configured to send, by using the source network side device, handover information to the endpoint access network device;
  • the endpoint access network device is configured to acquire information about a target access network device according to the handover information; and if the target access network device is different from the endpoint access network device, send the location to the target access network device. Switching information;
  • the target access network device is configured to send the radio resource information to the source network side device, and trigger the source network side device to forward the radio resource information to the terminal; or Sending to the endpoint access network device, triggering the endpoint access network device to forward the radio resource information to the terminal by using the source access network.
  • the endpoint access network device when receiving the terminal forwarded by the source network side device When the endpoint access network device of the handover information is different from the target access network device to which the target sector is to be switched, the endpoint access network device sends the terminal handover information forwarded by the source network side device to the target access network device.
  • the target access network device allocates the radio resource of the target network to the terminal and sends the radio resource to the terminal, thereby solving the problem of the inter-network handover of the terminal from the source network to the target network when the endpoint access network device is different from the target access network device. , improve the success rate of terminal cross-network switching.
  • FIG. 1 is a flowchart of a first embodiment of an inter-network handover method according to the present invention
  • FIG. 2a is a 3GPP evolution network architecture diagram of the cross-network handover method application scenario of the present invention
  • FIG. 2b is a cross-network handover method application scenario eHRPD network A.
  • FIG. 2c is a cross-access technology handover method application scenario of the present invention
  • eHRPD network A is a 3GPP evolution network architecture diagram of the cross-network handover method application scenario of the present invention
  • FIG. 2b is a cross-network handover method application scenario eHRPD network A.
  • FIG. 2c is a cross-access technology handover method application scenario of the present invention
  • eHRPD network A is a cross-access technology handover method application scenario of the present invention
  • S 0009 architecture diagram
  • FIG. 2 is a schematic diagram of an interworking between a 3GPP network and an eHRPD network according to an embodiment of the present invention
  • FIG. 3 is a flowchart of a second embodiment of an inter-network handover method according to the present invention
  • FIG. 4a is a flow chart of a method for switching a terminal from an E-UTRAN to an eHRPD network in the prior art
  • FIG. 4b is a network architecture diagram of a situation in which two adjacent eHRPD sectors exist in the prior art eNB
  • FIG. Three embodiment flow chart
  • FIG. 6 is a flowchart of a fourth embodiment of an inter-network handover method according to the present invention.
  • FIG. 7 is a flowchart of a fifth embodiment of an inter-network handover method according to the present invention.
  • FIG. 8 is a structural diagram of an embodiment of an access network device according to the present invention.
  • 9a is a structural diagram of a first embodiment of another access network device according to the present invention.
  • 9b is a structural diagram of a second embodiment of another access network device according to the present invention.
  • 9c is a structural diagram of a third embodiment of another access network device according to the present invention.
  • FIG. 10 is a structural diagram of a first embodiment of an inter-network switching system according to the present invention.
  • FIG. 1 is a structural diagram of a second embodiment of an inter-network switching system according to the present invention.
  • FIG. 12 is a structural diagram of a third embodiment of an inter-network switching system according to the present invention. detailed description
  • the source network is the network where the terminal is currently located; the target network is the network that the terminal needs to switch to.
  • the endpoint access network device, the target access network device, and the source access network device are all located on the target network side.
  • the endpoint access network device is an access network device that is located at the target network side and receives the terminal handover information forwarded by the source network side device; the target access network device is the access network to which the target sector to which the terminal needs to be handed over belongs.
  • the source access network device is an access network device that stores terminal session information.
  • the target packet control function device is a packet control function device located on the target network side and associated with the target access network device.
  • the source group control function device is a group control function device located on the target network side and associated with the source access network device.
  • the session information of the terminal is stored on the access network device; and for the eHRPD network A.
  • S 0009 architecture the session information of the terminal is stored in the packet control function device.
  • the source packet control function device is a packet control function device that stores terminal session information.
  • FIG. 1 is a flowchart of a first embodiment of an inter-network handover method according to the present invention. As shown in FIG. 1, this embodiment includes:
  • Step 1 Acquire the target access network device information according to the handover information of the terminal forwarded by the source network side device received by the endpoint access network device.
  • the endpoint access network device and the target access network device may be located on the target network side.
  • Step 1 If the target access network device is different from the endpoint access network device, send the handover information to the target access network device.
  • Step 1 3 The radio resource information allocated by the target access network device to the terminal according to the handover information is forwarded to the terminal by the source network side device.
  • the endpoint access network device that receives the terminal handover information forwarded by the source network side device is different from the target access network device to which the target actually belongs to the target sector
  • the endpoint access network device The receiving switch information is sent to the target access network device, and the target access network device allocates the radio resource of the target network to the terminal, and forwards the radio resource to the terminal through the source network side device, thereby solving the problem that when the endpoint accesses the network device and the target
  • the inter-network handover problem of the terminal from the source network to the target network improves the success rate of the terminal cross-network handover.
  • the terminal may allocate the radio resource to the terminal according to the handover information.
  • the target access network device may send the radio resource information to the endpoint access network device, and the endpoint access network device sends the information to the source network side device, and then passes through the source network side.
  • the device forwards the information to the terminal; or, when the endpoint access network device sends the handover information to the target access network device, the endpoint access network device sends the address information of the source network side device to the target access network device, so that the target After the access network device completes the allocation of the terminal radio resources, the target access network device may forward the radio resource information to the terminal through the source network side device, thereby simplifying the transmission process of the radio resource information.
  • the following is an example of a network architecture that may be involved in the application scenario of the embodiment of the cross-network handover method of the present invention.
  • Evolved UMTS Terrestrial Radio Access Network (E-UTRAN) is evolved by the evolved base station (Evolved Node B).
  • eNB eNode B
  • S-GW Serving Gateway
  • PDN-GW Packet Data Network Gateway
  • MN mobility management network element
  • High-rate packet data is a third-generation data wireless communication system that does not provide traditional circuit-switched voice functions and provides high-speed Rate data bearer service; also known as CDMA2000 lx EVDO; eHRPD network is an evolved high rate packet data system based on HRPD.
  • the Radio Access Network (RAN) device in the eHRPD network includes an Evolved Access Node (eAN) and a Packet Control Function (PCF), where eAN is equivalent to a base station.
  • RAN Radio Access Network
  • eAN Evolved Access Node
  • PCF Packet Control Function
  • HRPD Serving Gateway (hereinafter referred to as HSGW) is upgraded by Packet Data Serving Node (PDSN) of HRPD network It is responsible for data forwarding, authentication and billing.
  • HSGW Packet Data Serving Node
  • the terminal (AT) communicates with the eAN through the air AL interface, the eAN and the PCF communicate through the A8 and A9 interfaces, A8 is the user plane interface, A9 is the signaling plane interface; PCF and HSGW pass the A10 and All Interface communication.
  • A. S0008 architecture There are two architectures for the eHRPD network, one called A. S0008 architecture and the other called A. S0009 architecture.
  • 2b is a schematic diagram of an application scenario of the cross-network handover method of the present invention eHRPD network A.
  • 2c is a structural diagram of an application cross-access technology handover method eHRPD network A. S0009.
  • the biggest difference between the two architectures is the location of the functions of session negotiation and mobility management.
  • the session negotiation and mobility management functions of the S0008 architecture are on the eAN, and the session negotiation and location management functions of the A. S0009 architecture are on the PCF; the architecture difference is represented in the session transfer processing as follows: For the A.
  • the session is saved on the eAN, so the transfer of the session is between the eANs; the eANs communicate through the A13 interface.
  • the session is stored on the PCF, so the transfer of the session is between the PCFs; the eANs communicate via the A15 interface, and the PCFs communicate via the A13 interface.
  • FIG. 2 is a structural diagram of interworking between an application scenario 3GPP network and an eHRPD network according to an embodiment of the present invention.
  • the first interface is the S101 interface
  • the second interface is the S103 interface.
  • the S101 interface is an interface between the MN and the eAN. It is essentially a tunnel, which forwards signaling or signaling and data between the terminal and the target network.
  • the auxiliary terminal performs pre-registration on the target network or switches from the source network to the target network.
  • the S103 interface is an interface between the S-GW and the HSGW, and is used to forward data retained by the 3GPP evolved network. Go to the eHRPD network and send it to the terminal through the eHRPD network.
  • FIG. 3 is a flowchart of a second embodiment of an inter-network handover method according to the present invention. This embodiment is in eHRPD
  • the A. S 0008 architecture is taken as an example (refer to FIG. 2b), and the technical solution for completing the cross-network handover from E-UTRAN to eHRPD is completed when the S1 01 endpoint eAN is different from the target eAN.
  • the S101 endpoint eAN is the endpoint access network device of the present invention
  • the target eAN (Target eAN) is the target access network device of the present invention
  • the source eAN Source eAN
  • the sector identification information (Sec tor ID) is statically configured on the E-UTRAN, and the S101 tunnel between the LTE and the eHRPD network has been established.
  • this embodiment includes:
  • Step 31 The E-UTRAN judges that the terminal should switch to the eHRPD according to the actual situation of the network; for example: When the E-UTRAN finds that the signal of the current LTE network is weak, the E-UTRAN considers that the terminal should switch to the eHRPD network.
  • Step 32 The terminal sends the handover information of the eHRPD network to the MME via the E-UTRAN, where the handover information includes a connection request and a route update message, and is used to request the radio resource and the service in the eHRPD network.
  • the handover information includes a connection request and a route update message, and is used to request the radio resource and the service in the eHRPD network.
  • a channel identifier where the connection request carries a terminal identifier (UATI) allocated in the pre-registration process
  • the route update (RouteUpda te) message includes pilot information measured by the terminal, and the pilot information includes a pilot offset of each pilot. Parameters (P i lotPN ) and pilot strength.
  • the handover request may further include a sector identification letter statically configured by the eNB. (Sector ID).
  • Step 32b The MME forwards the handover information (ConnectionRequest+RouteUpdate) to the eAN corresponding to the sector identifier information (S101 endpoint eAN) through the SI 01 tunnel, and the MME sets the P-GW address.
  • the information and the P-GW uplink general routing packet protocol key value (GRE key) information are carried in the S101 Direct Transfer message (Direct Transfer) message and sent to the SI 01 endpoint eAN.
  • the MME also brings the sector identification information (Sector ID) to the S101 endpoint eAN through the SI 01 Direct Transfer (S101 Direct Transfer) message.
  • the S101 endpoint eAN obtaining target eAN information implementation method may include: when the handover occurs, the S101 endpoint eAN queries the pre-stored sector identification information and the pilot offset parameter (Pi lotPN) according to the sector identification information (Sec tor ID)
  • the relationship table can learn the sector corresponding to the sector identification information (Sector ID) and the pilot offset parameter (PilotPN) information of the sector adjacent to the sector.
  • the S101 endpoint eAN can accurately determine the pilot signal received by the terminal by comparing the pilot offset parameter (PilotPN) information and the pilot strength of each pilot measured in the Location Update request (routeUpdate) message.
  • Which sector further queries the pre-stored sector identification information and the eAN correspondence table to obtain the eAN to which the sector with the strongest pilot signal belongs, and the eAN is the target eAN to which the terminal is to be handed over.
  • Step 33 After receiving the handover information (ConnectionRequest+Route Update) sent by the MME through the S101 tunnel, the endpoint eAN determines the target eAN information according to the handover information. If the target eAN is not the eAN, that is, the target eAN is not the same as the S101 endpoint eAN. In the eAN, the S101 endpoint eAN sends the handover information of the terminal to the target eAN.
  • a new message can be defined, that is, A13-Message Transfer (A13-Message Transfer), which facilitates the use of the A13 interface to forward terminal switching information and the like.
  • the A13-transparent transmission message includes the handover information (ConnectionRequest + RouteUpdate) in step 32b, the sector identifier i information only in the E-UTRUN static state - (SectorlD), the P-GW address, and the uplink GRE button of the P-GW. Value information.
  • the target eAN After the target eAN receives the A13-Transport (A13-Message Transfer) message, it judges Whether the session information of the terminal is stored. Specifically, the target eAN can learn the eAN information storing the terminal session information according to the terminal identifier (UATI) information included in the handover information. If the target eAN is aware that the terminal session information is stored by itself, step 35 is performed; otherwise, the session information of the terminal is acquired from other eANs (hereinafter referred to as source eANs) storing the terminal session information, and step 34a is performed.
  • UATI terminal identifier
  • Step 34 The target eAN sends an A13-Session Information Request message (A13-Session Information Request) to the source eAN, and is used to request to acquire session information of the terminal.
  • A13-Session Information Request A13-Session Information Request
  • Step 34b The source eAN sends an A13-Session Information Response message (A13-Session Information Response) to the target eAN, where the session information response message includes session information of the terminal, such as: session state information record (SSIR) and extended session state information record. (ESSIR) and so on.
  • A13-Session Information Response A13-Session Information Response
  • SSIR session state information record
  • ESSIR extended session state information record.
  • Step 34c The target eAN sends an A3-Session Information Confirm message to the source eAN, and is used to confirm the session information of the received terminal. Go to step 36a.
  • Step 35 The target eAN sends an A9-Setup-A8 message (A9-Setup-A8) to the target PCF; the Data Ready Indicator (DRI) in the message attribute is set to 1, and includes establishing multiple A8 forwardings.
  • GRE key Tunnel GRE key value
  • P-GW address P-GW address
  • P-GW uplink GRE key value GRE key
  • Step 36a The target PCF sends an All-Registration Request (RRQ) message (hereinafter referred to as an A11-RRQ message) to the HSGW.
  • the A11-RRQ message includes a P-GW address and an uplink GRE key value of the P-GW (GRE key).
  • GRE key uplink GRE key value of the P-GW
  • GRE key forwarding tunnel GRE key
  • Step 36b The HSGW sends an All-Registration Response (RRP) message (hereinafter referred to as an A11-RRP message) to the target PCF, where the message includes a data forwarding address and a forwarding tunnel GRE key value allocated by the HSGW for the terminal (GRE key). )information.
  • RRP All-Registration Response
  • step 37 is performed; otherwise, step 38 is performed.
  • Step 37 The HSGW notifies the source PCF to release the user plane connection between the existing source PCF and the HSGW.
  • A10 connection (hereinafter referred to as A10 connection).
  • the source PCF then initiates a registration update process with the HSGW to release the original A10 connection; step 38 is performed.
  • Step 37 can be performed in parallel with step 36b.
  • Step 38 The target PCF sends an A9-Connect-A8 (A9-Connect-A8) message to the target eAN; the message includes the data forwarding address and the forwarding tunnel GRE key (GRE key) information allocated by the HSGW for the terminal.
  • A9-Connect-A8 A9-Connect-A8
  • GRE key GRE key
  • Step 39 After the target eAN allocates radio resources to the terminal, the target eAN sends a transparent transmission response to the S101 endpoint eAN.
  • a new message can be defined, namely A13-Message Transfer Response (A13-Message Transfer Response), which facilitates the transmission of transparent transmission response information using the A13 interface.
  • the A13-transparent transmission response message includes radio resource information allocated by the target eAN for the terminal, where the radio resource information includes HRPD Traffic Channel Assignment (TCA) information and new terminal identifier allocation information (UATIAssignment), where the traffic channel
  • the assignment information includes a data forwarding address and a GRE key (GRE key) information allocated by the HSGW for the terminal;
  • the new terminal identifier allocation information includes a new terminal identifier (UATI) allocated by the target eAN for the terminal.
  • Step 310 The S101 endpoint eAN forwards the radio resource (the traffic channel assignment information and the terminal identifier assignment information) to the terminal through the S101 Direct Transfer message.
  • the S101 direct transmission message includes the data forwarding address and GRE key information of the HSGW.
  • the S101 endpoint eAN sends the traffic channel assignment information and the terminal identifier assignment information to the MN through the S101 direct transmission message, and the E-UTRUN forwards the service channel assignment and the terminal identifier assignment information to the terminal.
  • Step 311 When there is still data in the E-UTRAN, data forwarding may be performed: the E-UTRAN starts to transmit the data packet to the HSGW through the S-GW, using the data forwarding address and the GRE key information allocated by the HSGW for the terminal. This step is an optional step.
  • Step 312 The terminal obtains an air interface of the HRPD.
  • Step 313 The terminal sends a traffic channel complete (Traff icChannelComplete, referred to as TCC) The message is sent to the target eAN.
  • TCC traffic channel complete
  • Step 314 After receiving the TCC message, the target eAN sends an A9-Update-A8 (A9-Update-A8) message to the target PCF.
  • A9-Update-A8 A9-Update-A8
  • Step 315 The target PCF sends an All-RRQ (All-Registration Request) message to the HSGW, and carries an indication of the active state transition (Active Start) in the message.
  • All-RRQ All-Registration Request
  • Step 316 The HSGW sends an A11-RRP (All-Registration Response) message to the target PCF, where the message includes an active state initial airlink record (Ac t i ve S t a r t A i r 1 i nk Record ).
  • A11-RRP All-Registration Response
  • Step 317 The target PCF sends an A9-Update-A8 response (A9-Update-A8 Ack) message to the target eAN.
  • A9-Update-A8 Ack A9-Update-A8 Ack
  • Step 318 The HSGW creates a binding with the proxy mobile IP (Proxy Mobi le IP, PMIP for short) of the P-GW, and completes other required procedures, for example, update policy information, and starts charging. Start (starting accounting operations) and so on.
  • Prxy Mobi le IP, PMIP for short the proxy mobile IP
  • Step 318 can be triggered by step 312 and can be performed in parallel with step 313.
  • Step 319a The target eAN sends the handover completion information to the S101 endpoint eAN.
  • a new message, A13-Handoff Complete can be defined, which is used to send the handover completion message using the A13 interface.
  • Step 319b the SI 01 endpoint eAN sends a handover completion response to the target eAN.
  • a new message, A13-Handoff Complete ACK can be defined, which facilitates the transmission of the handover completion response using the A13 interface.
  • Step 320 The S101 endpoint eAN notifies the MME that the handover is completed through the S101 tunnel (hereinafter referred to as S101-Handover Complete message).
  • Step 321 ⁇ E sends a handover completion response (hereinafter referred to as S101-Handover Complete Response message) to the S101 endpoint eAN through S101.
  • S101-Handover Complete Response message a handover completion response
  • Step 322 The E-UTRAN, the solid E, and the S-GW dry release resources, and the released resources include a PMIP tunnel from the S-GW to the P-GW.
  • the S101 endpoint eAN when the S101 endpoint eAN is not the target eAN, the S101 endpoint eAN transparently transmits the handover message to the target eAN through the inter-eAN interface (A13 interface); the target eAN allocates the radio resource to the terminal, and the radio resource information passes the eAN interface.
  • the S101 endpoint eAN Transparently delivered to the S101 endpoint eAN, the S101 endpoint eAN sends radio resource information to the terminal through the S101 tunnel; thus completing the E-UTRAN to HRPD handover.
  • This embodiment solves the problem that the E-UTRAN cross-network handover fails due to the S101 endpoint eAN is not the target eAN, which effectively ensures the E-UTRAN to switch to the eHRPD success rate, avoids the service terminal caused by the handover process, thereby ensuring the service. quality.
  • the target eAN in this embodiment may pass the eAN interface (A13 interface). And obtaining the session information of the terminal from the source eAN storing the terminal session information; the method for obtaining the session by the target eAN is simple, which is beneficial to reducing system complexity and providing system performance.
  • the S101 endpoint eAN in order to ensure that the S101 endpoint eAN can transmit necessary messages between the target eAN and the LTE network, the S101 endpoint eAN needs to maintain the context information of the S101 tunnel until the handover ends.
  • the source eAN and the S101 endpoint eAN may also be the same eAN (not shown).
  • the source eAN stores the terminal session information.
  • the S101 endpoint eAN and the source eAN are the same eAN, after the terminal session information is migrated to the target eAN, the S101 endpoint eAN also needs to continue to maintain the context information of the terminal S101 tunnel until the handover ends.
  • FIG. 4a is a flow chart of a method for switching a terminal from an E-UTRAN to an eHRPD network in the prior art. As shown in FIG. 4a, after the terminal completes the "pre-registration" process, the prior art performs the following switching operations:
  • Step 41 The E-UTRAN determines that the terminal should switch to the eHRPD according to the actual situation of the network.
  • Step 42 The terminal sends the handover information of the eHRPD network to the MME via the E-UTRAN, where the handover information carries the sector identifier information (Sector ID) statically configured by the eNB.
  • the handover information carries the sector identifier information (Sector ID) statically configured by the eNB.
  • Step 42b The solid E sends the switching information to the eAN corresponding to the sector identification information.
  • Step 43a the eAN sends an A9-Setup-A8 (A9-Setup-A8) message to the PCF, which includes the GRE key (GRE key) information for establishing a single A8 tunnel.
  • GRE key GRE key
  • Step 43b When the PCF determines that multiple A8 connections are necessary, the PCF sends an A9-Release-A8 Complete message to the eAN, and the cause value of the message is set to "requires multiple connections". Go to step 44.
  • Step 43c The eAN sends an A9-Set-A8 (A9-Setup-A8) message to the PCF, which includes GRE key information for establishing multiple A8 tunnels. Go to step 44.
  • Step 44 The PCF sends an All-RRQ (All-Registration Request) message to the HSGW.
  • the request is used to request the HSGW to allocate a data forwarding address and a GRE key value information of the forwarding tunnel.
  • Step 45 The HSGW sends an All-RRP (All-Registration Response) message to the PCF.
  • the message includes the data forwarding address allocated by the HSGW for the terminal and the GRE key value information of the forwarding tunnel.
  • Step 46 The PCF sends an A9-Connect-A8 (A9-Connect-A8) message to the eAN; the message includes a data forwarding address and GRE key information allocated by the HSGW for the terminal.
  • A9-Connect-A8 A9-Connect-A8
  • Step 47 The eAN allocates necessary radio resources to the terminal, and sends the radio resources allocated to the terminal through the S101 tunnel.
  • Step 48 If data forwarding occurs, the E-UTRAN starts to use the S-GW to forward the data packet to the HSGW by using the data forwarding address and the GRE key information allocated by the HSGW for the terminal.
  • Step 49 The terminal obtains an air interface of the HRPD.
  • Step 410 The terminal sends a TCC (TrafficChannelComplete) message to the eAN.
  • TCC TrafficChannelComplete
  • Step 411 After receiving the TCC message, the eAN sends an A9-Update-A8 (A9-Update-A8) message to the PCF, and carries an indication of the active state transition (Active Start).
  • A9-Update-A8 A9-Update-A8
  • Step 412 The PCF sends an All-RRQ (All-Registration Request) message to the HSGW, where the message includes an Active Start Airlink Record.
  • All-RRQ All-Registration Request
  • Step 413 The HSGW sends an All-RRP (All-Registration Response) message to the PCF.
  • All-RRP All-Registration Response
  • Step 414 The PCF sends an A9-Update-A8 Response (A9, -Update-A8 Ack) message to the eAN.
  • Step 415 The HSGW creates a Proxy Mob i le IP (PMIP) binding for the terminal.
  • PMIP Proxy Mob i le IP
  • Step 416 The e AN sends an S101 handover complete message to the MME.
  • Step 417 The MME sends an S101 handover completion response message to the eAN.
  • Step 418 The E-UTRAN, the MME, and the S-GW release the resources, and the released resources include a PMIP tunnel from the S-GW to the P-GW.
  • the S101 endpoint eAN may not be the target eAN to which the target sector of the terminal handover belongs; in particular, at the terminal of the eAN coverage edge, there is a possibility that the S101 endpoint eAN is different from the target eAN. If the S101 endpoint
  • the statically configured sector identification information should be the sector identification information ( Sector lD) of the HRPD sector adjacent to the eNB. If the eNB is adjacent to multiple HRPD sectors, only Sector lD of one HRPD sector can be selected as the sector identification information ( Sector lD) of the eNB static configuration.
  • 4b is a network architecture diagram of a situation in which two adjacent HRPD sectors exist in a prior art eNB. As shown in FIG.
  • S4 and S5 represent two different HRPD sectors adjacent to the eNB; S4 belongs to eAN1, and S5 belongs to eAN2; eNB is adjacent to both S4 and S5; statically configured sector identification information on the eNB (Sector lD) The corresponding sector is S5; It is assumed that when the terminal switches from E-UTRAN to eHRPD network, the strongest pilot signal measured by the terminal comes from the signal of sector S4. It can be seen that eAN2 is the S101 endpoint eAN and eANl is the target eAN.
  • the eAN2 When the eAN2 receives the direct transmission message sent by the MN (that is, after performing step 42b in FIG. 4a), the eAN2 obtains the Pi lotPN of the S5 according to the sector identification information information (Sector lD (S5)) carried in the direct transmission message. PilotPN of the adjacent sector, and combining the Pi lotPN and the pilot strength in the Location Update message, it can be known that the strongest pilot signal received by the terminal is from sector S4; and S4 is located in the adjacent eAN ( That is, the sector of eANl). Due to sector S4 It belongs to eANl, so eAN2 cannot directly allocate radio resources to the terminal, which causes the handover to fail.
  • the sector identification information information S5
  • the terminal has negotiated the session with the target network eHRPD through the pre-registration, but the prior art cannot transfer the session of the terminal to the target eAN.
  • the two scenarios may be included: If the negotiated session is saved on the S101 endpoint eAN, The prior art cannot directly transfer the session of the terminal from the S101 endpoint eAN to the target eAN; or, if the negotiated session is saved on another eAN, but the other eAN is not the target eAN, the prior art cannot be well The transfer of the terminal's session from the saved eAN to the target eAN is implemented.
  • the prior art has no corresponding solution for how to complete the cross-network handover and the terminal session transfer in different situations of the S101 endpoint eAN and the target eAN, so that the handover success rate between the networks is low.
  • the S101 endpoint eAN when the S101 endpoint eAN is different from the target eAN, the S101 endpoint eAN transparently transmits the handover message to the target eAN through the inter-eAN interface (A13 interface); the target eAN allocates the radio resource to the terminal.
  • the radio resource information is transparently transmitted to the S101 endpoint eAN through the inter-eAN interface, and the S101 endpoint eAN sends the radio resource information to the terminal through the S101 tunnel; thereby completing the E-UTRAN to eHRPD handover.
  • This embodiment solves the problem that the E-UTRAN cross-network handover fails due to the S101 endpoint eAN is not the target eAN, which effectively ensures the E-UTRAN to switch to the eHRPD success rate, avoids service interruption caused by the handover process, thereby ensuring the service. quality.
  • the target eAN in this embodiment may pass the eAN interface (A13 interface).
  • the target eAN can acquire the session by using the existing technology, thereby solving the technology that the terminal session information is transferred to the target eAN when the S101 endpoint eAN is different from the target eAN.
  • the problem, the method is simple, which helps to reduce system complexity and provide system performance.
  • FIG. 5 is a flowchart of a third embodiment of an inter-network handover method according to the present invention.
  • the difference between this embodiment and the embodiment shown in FIG. 3 is that the embodiment is based on the A. S0009 architecture in the eHRPD (as shown in FIG. 2c), and the completion of the E is completed when the S101 endpoint eAN is different from the target eAN.
  • this embodiment includes:
  • Step 51 - Step 52b is similar to Step 31 - Step 32b of the embodiment shown in Figure 3.
  • Step 53 After receiving the handover information (ConnectionRequest + RouteUpdate) sent by the MME through the S101 tunnel, the endpoint eAN obtains the target eAN information according to the handover information, and sends the handover information of the terminal to the target eAN.
  • a new message can be defined, that is, A15-Transportation Message (A15-Message Transfer), which facilitates the use of terminal switching information forwarded by the A15 interface.
  • the A15-transparent transmission message includes the handover information (ConnectionRequest + RouteUpdate) in step 52b, the sector identifier i information of the E-UTRUN static state - (SectorlD), the P-GW address, and the uplink GRE key of the P-GW. Value information.
  • Step 54 The target eAN sends an A9-Setup-A8 message (A9-Setup-A8) to the target PCF; the Data Ready Indicator (DRI) in the message attribute is set to 1, and includes establishing a single A8 tunnel GRE.
  • the Session Information Required field of the A9 indicator is set to 1 to request the session information record (Session Information Record) of the terminal from the target PCF.
  • the target PCF After receiving the A9-Setup-A8 message (A9-Setup-A8) message, the target PCF determines whether it stores the session information of the terminal, and if yes, performs step 56; otherwise, acquires the PCF storing the terminal session information (hereinafter referred to as Source PCF) address information, go to step 55a.
  • Source PCF terminal session information
  • the target PCF can know the PCF information storing the terminal session information based on the UATI information included in the handover information. If the target PCF knows that the terminal session information is stored in itself, step 56 is performed; otherwise, the session information of the terminal is obtained from the other PCF (hereinafter referred to as the source PCF (Source PCF)) storing the terminal session information, and step 55a is performed.
  • the source PCF hereinafter referred to as the source PCF (Source PCF)
  • Step 55a The target PCF sends an A13-session information request message to the source PCF (A13-Session)
  • Step 55b The source PCF sends an Al 3-session information response message (A13-Session Information Response) to the target PCF, where the session information response message includes session information of the terminal, such as: session state information record (SSIR) and extended session state information record (ESSIR) and so on.
  • SSIR session state information record
  • ESSIR extended session state information record
  • Step 55c The target PCF sends an A13-Session Information Confirm message to the source PCF to confirm the session information of the received terminal. Go to step 56.
  • Step 56 When the target PCF decides to establish a multi- ⁇ 8 connection, the target PCF sends a ⁇ 9-Release-A8 Complete message to the target eAN, where the message carries the SSIRs information, and the message cause value is Set to "requires multiple connections".
  • Step 57 The target eAN sends an A9-Setup-A8 (A9-Setup-A8) message to the target PCF, and sets the data ready indication (DRI) in the message attribute to 1, and includes establishing GRE key values of multiple A8 tunnels.
  • the message further includes the P-GW address received in step 53 and the uplink GRE key value information of the P-GW.
  • Step 58a The target PCF sends an All-RRQ (All-Registration Request) message to the HSGW.
  • the message includes information of the P-GW address and the uplink GRE key, and is used to request the HSGW to allocate a data forwarding address and a GRE key value of the forwarding tunnel for the terminal. information.
  • Step 58b The HSGW sends an All-RRP (All-RegistrationResponse) message to the target PCF.
  • the message includes the data forwarding address allocated by the HSGW for the terminal and the GRE key value information of the forwarding tunnel.
  • step 59 is performed; otherwise, step 510 is performed.
  • Step 59 The HSGW notifies the source PCF to release the user plane connection between the existing source PCF and the HSGW, that is, release the A10 connection.
  • the source PCF then initiates a registration update process with the HSGW to release the original A10 connection; step 510 is performed.
  • Step 59 can be performed in parallel with step 58b.
  • Step 510 The target PCF sends an A9-Connect-A8 (A9-Connect-A8) message to the target eAN.
  • the message includes the data forwarding address allocated by the HSGW for the terminal and the GRE key value information of the forwarding tunnel.
  • A15-Message Transfer Response A15-Message Transfer Response
  • A15-Message Transfer Response can be defined, which facilitates the transmission of transparent transmission response information using the A15 interface.
  • the A15-transmission transmission response message includes the radio resource information allocated by the target eAN for the terminal, where the radio resource information includes the service channel assignment information and the terminal identifier allocation information, where the service channel assignment information includes a data forwarding address allocated by the HSGW for the terminal.
  • Step 512 The S101 endpoint eAN forwards the radio resource (the traffic channel assignment information and the terminal identifier assignment information) to the terminal through the S101 interface.
  • the S101 endpoint eAN passes the traffic channel assignment information and the terminal identifier assignment information.
  • the S101 Direct Transfer message is sent to the MME, and the MME forwards the traffic channel assignment and the terminal identifier assignment information to the terminal via E-UTRUN.
  • Step 513 When the stagnation data is still stored on the E-UTRAN, the data forwarding may be performed: the E-UTRAN starts to use the S-GW, and uses the data forwarding address allocated by the HSGW for the terminal and the GRE key value information of the forwarding tunnel to forward the data packet. To the HSGW. This step is an optional step.
  • Step 514 The terminal obtains an air interface of the HRPD.
  • Step 515 The terminal sends a TCC message to the target eAN.
  • Step 516 After receiving the TCC message, the target eAN sends an A9-Update-A8 (A9-Update-A8) message to the target PCF.
  • A9-Update-A8 A9-Update-A8
  • Step 517 The target PCF sends an All-RRQ (All-Registration Request) message to the HSGW, and carries an indication of an active state transition (Active Start).
  • All-RRQ All-Registration Request
  • Step 518 The HSGW sends an All-RRP (All-RegistrationResponse) message to the target PCF, where the message includes an Active Start Airlink Record 0 step 519, and the target PCF sends an A9-Update-A8 to the target eAN. Response (A9-Update-A8 Ack) message.
  • All-RRP All-RegistrationResponse
  • A9-Update-A8 Ack A9-Update-A8 Ack
  • Step 520 The HSGW creates a proxy mobile IP (Proxy Mobile IP) with the P-GW for the terminal.
  • PMIP Prxy Mobile IP
  • complete other required programs such as: update policy information, starts accounting operations, and so on.
  • Step 520 can be triggered by step 514 and can be performed in parallel with step 515.
  • Step 521a The target eAN sends handover completion information to the S101 endpoint eAN.
  • a new message, A15-Handoff Complete can be defined, which is used to send the handover completion message using the A15 interface.
  • Step 521b the SI 01 endpoint eAN sends a handover completion response to the target eAN.
  • a new message, A15-Handoff Complete ACK can be defined, which facilitates the transmission of the handover completion response using the A15 interface.
  • Step 522 The S101 endpoint sends an S101-Handover Complete message to the UI.
  • Step 523 Send a S101-Handover Complete Response message to the S101 endpoint eAN.
  • Step 524 The E-UTRAN, the MME, and the S-GW release the resources, and the released resources include a PMIP tunnel from the S-GW to the P-GW.
  • the S101 endpoint eAN when the S101 endpoint eAN is different from the target eAN, the S101 endpoint eAN transparently transmits a handover message (ConnectionRequest+RouteUpdate) to the target eAN through the inter-eAN interface (A15 interface); the target eAN forwards the handover information to the target PCF, The target PCF allocates the radio resource to the terminal, and sends the radio resource information to the target eAN.
  • the target eAN is transparently transmitted to the S101 endpoint eAN through the inter-eAN interface, and the S101 endpoint eAN sends the radio resource information to the terminal through the S101 tunnel; E-UTRAN to HRPD handover.
  • This embodiment solves the problem that the E-UTRAN to eHRPD cross-access technology handover problem when the S101 endpoint eAN is different from the target eAN under the HRPD network A.
  • S0009 architecture effectively ensuring the E-UTRAN handover success rate to the eHRPD.
  • the target PCF in this embodiment may pass the interface between the PCF (A13 interface). Obtaining the session information of the terminal from the source PCF storing the terminal session information, so that the target PCF can acquire the session by using the existing technology, and the method is simple and advantageous. To reduce system complexity and provide system performance.
  • FIG. 6 is a flowchart of a fourth embodiment of an inter-network handover method according to the present invention.
  • the transparent transmission process of the radio resource information (the traffic channel assignment information and the new terminal identifier information) is directly sent by the target eAN based on the S101 tunnel.
  • the MME is sent without forwarding through the S 101 endpoint eAN.
  • this embodiment includes:
  • Step 61 - Step 62b is similar to Step 31 - Step 32b of the embodiment shown in Figure 3.
  • the endpoint eAN After receiving the handover information (ConnectionRequest + RouteUpdate) sent by the MME through the S101 tunnel, the endpoint eAN obtains the target eAN information according to the handover information, and sends an A13-Transportation message (A13-Message Transfer) to the target eAN.
  • the switch information (Connect ionRequest + RouteUpdate) in step 32b, the sector identification information (SectorlD) of the E-UTRUN static configuration, the P-GW address and the uplink GRE key value information of the P-GW, and the address information of the MN are included.
  • Step 63b The target eAN sends an A13-Transformed Transmission Response message (Al 3-Message Transfer Response) to the S101 endpoint eAN.
  • Steps 64-68 are similar to steps 34-38 of the embodiment shown in FIG.
  • Step 69 The target eAN allocates radio resources to the terminal, and then the target eAN sends a S101 Direct Transfer message to the MME through the S101 tunnel, where the S101 direct transmission message includes the radio resource information allocated by the target eAN for the terminal, the radio resource.
  • the information includes the service channel assignment information and the terminal identifier assignment information.
  • the S101 direct transmission message includes the data forwarding address allocated by the HSGW for the terminal and the GRE key value information of the forwarding tunnel.
  • Step 610 The MME forwards the radio resource information (the traffic channel assignment information and the terminal identifier assignment information) of the HRPD to the terminal through the E-UTRUN.
  • Step 611 - Step 618 is similar to step 311 - step 318 of the embodiment shown in FIG.
  • Step 619 The target eAN sends an S101-Handover Complete message to the MME through the S101 tunnel.
  • the target eAN sends the radio resource information such as the traffic channel assignment information and the terminal identifier allocation information to the solid E, thereby simplifying the tunnel transmission target eAN allocated to the terminal.
  • the process of wireless resource information helps to reduce system complexity and improve system performance.
  • FIG. 7 is a flowchart of a fifth embodiment of an inter-network handover method according to the present invention.
  • the transparent transmission process of the radio resource information (the traffic channel assignment information and the new terminal identifier information) is directly sent by the target eAN based on the S101 tunnel.
  • the MME is sent without forwarding through the S101 endpoint eAN.
  • this embodiment includes: Step 71 - Step 72b is similar to step 51 - step 52b of the embodiment shown in FIG.
  • Steps 73a, S101 After receiving the handover information (Connec ti onReques t + RouteUpda te ) sent by the MME through the S101 tunnel, the endpoint eAN obtains the target eAN information according to the handover information, and sends an A15-transparent transmission message to the target eAN (A15-Mes sage Transfer).
  • the message includes the switching information (Connec t ionReques t + RouteUpda te ) in step 72b, the sector identification information (Sec tor l D ) of the E-UTRUN static configuration, the P-GW address, and the uplink GRE key of the P-GW. Value information, and address information of ⁇ E.
  • Step 73b The target eAN sends an A15-Mes sage Transfer Ack to the S101 endpoint eAN.
  • Step 74a-step 710 is similar to steps 54a-510 of the embodiment shown in FIG.
  • Step 71 The target eAN allocates a radio resource to the terminal, and then the target eAN sends a S101 Di rec t Transfer message to the MME through the S101 tunnel, where the S101 direct transmission message includes the radio resource information allocated by the target eAN for the terminal.
  • the radio resource information includes the service channel assignment information and the terminal identifier allocation information.
  • the S1 01 direct transmission message includes a data forwarding address allocated by the HSGW for the terminal and GRE key value information of the forwarding tunnel.
  • the terminal identifier allocation information includes the target eAN as the terminal. The assigned new terminal ID.
  • Step 712 The MME forwards the radio resource information (the traffic channel assignment information and the terminal identifier assignment information) of the HRPD to the terminal through the E-UTRUN.
  • Step 71 3-Step 720 is similar to step 51 3-step 520 of the embodiment shown in FIG.
  • Step 721 The target eAN sends a S 1 01 - handover complete message to the MN through the S 1 01 tunnel.
  • Step 723 The E-UTRAN, the MME, and the S-GW release the resources, and the released resources include a PMIP tunnel from the S-GW to the P-GW.
  • the present embodiment transmits the radio resource information such as the traffic channel assignment information and the terminal identifier allocation information to the solid E through the target eAN, thereby simplifying the tunnel transmission target eAN allocated to the terminal.
  • the process of wireless resource information helps to reduce system complexity and improve system performance.
  • FIG. 8 is a structural diagram of an embodiment of an access network device according to the present invention. As shown in FIG. 8, the embodiment includes an analysis module 81, a determination module 82, and a communication module 83.
  • the parsing module 81 is configured to obtain target access network device information according to the received handover information of the terminal forwarded by the source network side device.
  • the determining module 82 is configured to determine, according to the target access network device information acquired by the parsing module 81, whether the target access network device is the access network device.
  • the communication module 83 is configured to: when the determining module 82 determines that the target access network device is different from the local access network device, send the handover information to the target access network device; and receive the wireless information that the target access network device allocates to the terminal according to the handover information.
  • the resource information is forwarded to the terminal by the source network side device.
  • the communication module when the determining module determines that the access network device itself is not the target access network device to which the target sector to which the terminal is to be switched, the communication module sends the terminal switching information forwarded by the source network side device to the target access network.
  • the device, and the target access network device allocates radio resource information to the terminal, and sends the information to the terminal through the source network side device, thereby solving the access network device that receives the terminal switching information forwarded by the source network side device, and the terminal actually switches to the terminal.
  • Target access network to which the target sector belongs When the standby device is different (that is, the access network device is different from the target access network device), the inter-network handover problem of the terminal from the source network to the target network improves the success rate of the terminal cross-network handover.
  • FIG. 9a is a structural diagram of a first embodiment of another access network device according to the present invention. As shown in FIG. 9a, the embodiment includes a receiving module 91, a radio resource allocation module 92, and a transmitting module 93.
  • the receiving module 91 is configured to receive, by the endpoint access network device, handover information of the terminal forwarded by the source network side device.
  • the radio resource allocation module 92 is configured to allocate radio resources to the terminal according to the handover information received by the receiving module 91.
  • the sending module 93 is configured to send the radio resource information allocated by the radio resource allocation module 92 to the source network side device, and trigger the source network side device to forward the radio resource information to the terminal; or the radio resource information allocated by the radio resource allocation module 92, Sending to the endpoint access network device, triggering the endpoint access network device to forward the radio resource information to the terminal through the source access network.
  • the wireless resource allocation module when the receiving module receives the switching information of the source network side terminal that is forwarded by the endpoint access network device, the wireless resource allocation module is triggered to allocate the wireless resource to the terminal, and the wireless resource information is directly forwarded to the terminal through the source network side device or
  • the endpoint access network device forwards the terminal to the terminal through the source network side device, thereby solving the problem that the endpoint access network device that receives the terminal handover information forwarded by the source network side device and the target sector to which the target sector to which the terminal actually switches is connected
  • the network access device is different (that is, the endpoint access network device is different from the access network device)
  • the terminal cross-network handover problem from the source network to the target network improves the success rate of the terminal cross-network handover.
  • FIG. 9b is a structural diagram of a second embodiment of another access network device according to the present invention.
  • the access network device in this embodiment may further include a first session information obtaining module 94.
  • the first session information obtaining module 94 is configured to acquire the session information of the terminal from the source access network device according to the handover information received by the receiving module 91 when the access network device does not store the session information of the terminal.
  • This embodiment is based on the technical effect of the embodiment shown in FIG. 9a, when the device is connected to the endpoint.
  • the access network device can obtain the terminal session information from the source access network device, thereby further solving the problem of terminal session migration, which is beneficial to reducing System complexity, providing system performance.
  • FIG. 9c is a structural diagram of a third embodiment of another access network device according to the present invention.
  • the access network device of this embodiment may further include a second session information obtaining module 95.
  • the second session information obtaining module 95 is configured to send the terminal identifier included in the handover information received by the receiving module 91 to the target packet control function device, and trigger the target packet control function device, where the target packet control function device is not stored and corresponding to the terminal identifier
  • the session information of the terminal is acquired from the source packet control function device.
  • the trigger target group control function device is not stored in the target packet control function device.
  • the session information of the terminal is obtained from the source packet control function device; thereby further solving the problem of terminal session migration, which is beneficial to reducing system complexity and providing system performance.
  • FIG. 10 is a structural diagram of a first embodiment of an inter-network switching system according to the present invention. As shown in FIG. 10, the embodiment includes a terminal 101, a source network side device 102, an endpoint access network device 1 031, and a target access network device 1032. The endpoint access network device 1 031 and the target access network device 1032 It can be located at the target network side 103.
  • the terminal 101 is configured to send the handover information to the endpoint access network device 1031 through the source network side device 102. Specifically, the terminal 101 sends the handover information to the source network side device 102. The source network side device 102 transmits the handover information from the terminal 101 to the endpoint access network device 1031.
  • the endpoint access network device 1 031 is configured to obtain information about the target access network device 1032 according to the terminal 101 handover information forwarded by the source network side device 102. If the target access network device 1032 is different from the endpoint access network device 1031, The access network device 1032 transmits the handover information.
  • the target access network device 1032 is configured to allocate a radio resource to the terminal 101 according to the handover information; send the radio resource information to the source network side device 102, and trigger the source network side device 102 to use the radio resource information.
  • the information is sent to the terminal 101.
  • the radio resource information is sent to the endpoint access network device 1 031, and the endpoint access network device 1031 is triggered to forward the radio resource information to the terminal 101 through the source network side device 102.
  • the endpoint access network device that receives the terminal handover information forwarded by the source network side device when the endpoint access network device that receives the terminal handover information forwarded by the source network side device is different from the target access network device to which the target actually belongs to the target sector, the endpoint access network device will be the source network side device.
  • the forwarded terminal handover information is sent to the target access network device, and the target access network device allocates the radio resource of the target network to the terminal and sends the radio resource to the terminal, thereby solving the problem that when the endpoint access network device is different from the target access network device,
  • the cross-network handover problem of the terminal from the source network to the target network improves the success rate of the terminal cross-network handover.
  • FIG. 11 is a structural diagram of a second embodiment of an inter-network switching system according to the present invention. As shown in FIG. 11, the difference between this embodiment and the embodiment shown in FIG. 10 is that the inter-network switching system of this embodiment further includes a source access network device 1033 located at the target network side 103.
  • the source access network device 1033 is configured to store session information of the terminal 101.
  • the target access network device 1032 is further configured to acquire the terminal 101 from the source access network device 1033 according to the handover information of the terminal 101 when the session information of the terminal 101 is not stored by the target (the target access network device 1032). Session information.
  • This embodiment is based on the technical effect of the embodiment shown in FIG. 10, when the endpoint access network device and the target access network device are not the same access network device, and the target access network device does not have the storage terminal session information.
  • the method for acquiring the session information of the terminal is obtained by the source access network device storing the terminal session information, so as to solve the problem of the terminal session migration.
  • the method for obtaining the session by the target access network device in this embodiment is simple, and the system complexity is reduced. System performance.
  • FIG. 12 is a structural diagram of a third embodiment of an inter-network switching system according to the present invention. As shown in FIG. 12, the difference between the embodiment and the embodiment shown in FIG. 10 is that the cross-network switching system of this embodiment further includes: a target grouping control function device 1034 and a source packet control function device 1035, wherein the target grouping control function is Both device 1034 and source packet control function device 1035 are located at target network side 103.
  • the source packet control function device 1035 is configured to store session information of the terminal 101.
  • the target access network device 1032 is further configured to send the terminal identifier included in the terminal 101 handover information to the target packet control function device 1034.
  • the target packet control function device 1034 is configured to acquire the session information of the terminal 101 from the source packet control function device 1035 when the session information of the terminal 101 corresponding to the terminal identifier is not stored by itself (the target packet control function device 1034).
  • This embodiment is based on the technical effect of the embodiment shown in FIG. 10, when the endpoint access network device and the target access network device are not the same access network device, and the target packet control function device does not have the storage terminal session information.
  • the session information of the terminal is obtained from the source packet control function device that stores the terminal session information, so as to solve the problem of the terminal session migration.
  • the method for the terminal session migration in this embodiment is simple, which is beneficial to reducing system complexity and providing system performance.
  • modules in the apparatus in the embodiments may be distributed in the apparatus of the embodiment according to the embodiment, or may be correspondingly changed in one or more apparatuses different from the embodiment.
  • the modules of the above embodiments may be combined into one module, or may be further split into a plurality of sub-modules.
  • the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé, un système et un dispositif d'accès de transfert cellulaire inter-réseaux. Le procédé de transfert cellulaire inter-réseaux consiste à: obtenir des informations concernant le dispositif de réseau d'accès cible selon des informations de transfert d'un terminal reçues par un dispositif de réseau d'accès point et acheminées par un dispositif côté réseau source; lorsque le dispositif de réseau d'accès cible est différent du dispositif de réseau d'accès point, envoyer les informations de transfert au dispositif de réseau d'accès cible; acheminer des informations concernant les ressources radio au terminal par le dispositif côté réseau source, les informations concernant les ressources radio étant affectées au terminal par le dispositif de réseau d'accès cible selon les informations de transfert. Les modes de réalisation de l'invention permettent de résoudre le problème de transfert cellulaire inter-réseaux selon lequel le terminal effectue un transfert cellulaire du réseau source au réseau cible, lorsque le dispositif de réseau d'accès point qui reçoit les informations du terminal acheminées par le dispositif côté réseau source est différent du dispositif de réseau d'accès cible du secteur cible, que le terminal va effectivement transférer, de manière à augmenter le taux de succès relatif au transfert cellulaire inter-réseaux effectué par ledit terminal.
PCT/CN2009/073962 2008-09-26 2009-09-16 Procédé, système et dispositif d'accès de transfert cellulaire inter-réseaux Ceased WO2010037313A1 (fr)

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CN200810223069.5 2008-09-26

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CN104041120B (zh) * 2012-11-29 2018-01-02 华为技术有限公司 异系统切换方法、装置及系统
CN104244411B (zh) * 2013-06-06 2017-09-12 华为技术有限公司 一种终端状态通知方法和装置
CN107770829A (zh) * 2016-08-17 2018-03-06 中兴通讯股份有限公司 一种终端切换方法、装置和设备
CN114531714B (zh) * 2019-06-17 2025-03-14 腾讯科技（深圳）有限公司 通信方法、装置、计算机可读介质及电子设备

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CN1984436A (zh) * 2005-12-15 2007-06-20 上海原动力通信科技有限公司 不同接入系统之间移动性管理系统及管理方法
CN101001439A (zh) * 2006-01-10 2007-07-18 华为技术有限公司 终端在异构网络间进行切换的方法
CN101052208A (zh) * 2006-04-06 2007-10-10 华为技术有限公司 一种切换方法及切换网络
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