WO2013123783A1 - 确定源sgsn的方法和装置 - Google Patents
确定源sgsn的方法和装置 Download PDFInfo
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- WO2013123783A1 WO2013123783A1 PCT/CN2012/084659 CN2012084659W WO2013123783A1 WO 2013123783 A1 WO2013123783 A1 WO 2013123783A1 CN 2012084659 W CN2012084659 W CN 2012084659W WO 2013123783 A1 WO2013123783 A1 WO 2013123783A1
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- Prior art keywords
- sgsn
- addressing information
- source sgsn
- source
- target
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
- H04W8/08—Mobility data transfer
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
- H04W8/06—Registration at serving network Location Register, VLR or user mobility server
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/26—Network addressing or numbering for mobility support
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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
- H04W36/0022—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies
- H04W36/00224—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies between packet switched [PS] and circuit switched [CS] network technologies, e.g. circuit switched fallback [CSFB]
- H04W36/00226—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies between packet switched [PS] and circuit switched [CS] network technologies, e.g. circuit switched fallback [CSFB] wherein the core network technologies comprise IP multimedia system [IMS], e.g. single radio voice call continuity [SRVCC]
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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
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0064—Transmission or use of information for re-establishing the radio link of control information between different access points
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/12—Reselecting a serving backbone network switching or routing node
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
- H04W60/005—Multiple registrations, e.g. multihoming
Definitions
- Embodiments of the present invention relate to the field of communications, and, more particularly, to a method and apparatus for determining a GPRS (General Packet Radio Service) Service Support Node (SGSN).
- GPRS General Packet Radio Service
- SGSN Service Support Node
- the user equipment reports the Network Resource Identifier (NRI) to the radio network controller in the initial direct transmission message of the Routing Area Update (RAU) request message.
- RAU Routing Area Update
- RNC Radio Network Controller
- RNC Radio Network Controller
- RNC sends the Routing Area Identifier (RAI) and the NRI to the Mobile Switching Center (MSC)
- MSC Mobile Switching Center
- MME Mobility Management Entity
- target SGSN determines the source SGSN where the UE is located according to the RAI and the NRI and acquires the context of the UE on the source SGSN.
- SRVCC reverse single radio voice continuation
- CS domain Circuit Switched Domain
- PS Domain Packet Switched Domain
- the RAI and NRI reported by the UE are sent to the MSC in the Relocation Required message.
- the target MME or the target SGSN acquires the context of the UE from the SGSN where the UE is located in the reverse SRVCC handover process.
- the addressing information of the SGSN can use the RAI FQDN structure, that is, the RAI and the NRI, so that the target MME or the target SGSN can connect to the source SGSN where the UE is located through the above addressing information.
- the RAI is composed of a Mobile Country Code (MCC), a Mobile Network Code (MNC), a Location Area Code (LAC), and a Routing Area Code (RAC).
- the UE initiates a RAU procedure when the RNC initiates a reverse SRVCC handover, so that the RNC can initiate an initial direct message (eg, a RAU request message).
- the NRI of the UE is obtained, and the RAI of the UE and the RAI of the cell where the UE is located are consistent.
- the RAI and the NRI are carried in the migration request message and sent to the MSC, and then sent by the MSC to the target MME or the target SGSN.
- the RNC When the RNC cannot connect to the source SGSN, the RNC will reselect a new SGSN, so the NRI reported by the UE is invalid. If the UE is in the CS connection state, if the UE initiates the RAU handover, the RAU request message is sent by using the direct transfer (Direct Transfer) message to ensure the RAI of the UE and the RAI of the cell where the UE is located. It is consistent. However, the uplink direct transmission message does not include the NRI. When the SGSN where the UE is located changes, the RNC still cannot obtain the addressing information of the new source SGSN.
- Direct Transfer Direct Transfer
- the RNC when the UE is in the PS connection state, if the UE crosses the SGSN, if the RAI changes, and the RNC does not notify the UE of the new RAI, the RNC cannot obtain the RAI of the source SGSN where the UE is located after the handover. Even if the RNC notifies the UE of the change of the RAI, because the RAI changes, the UE initiates the RAU procedure after receiving the above notification, so that the UE obtains a new RAI. However, when the SGSN where the UE is located changes, the UE sends an RAU request by using the uplink direct transmission message, and the message does not carry the NRI. Even if the NRI is carried, the SGSN that the RNC cannot select to the NRI indication exists. In the case where the NRI changes, the RNC still cannot obtain the addressing information of the new source SGSN. Summary of the invention
- the embodiment of the invention provides a method and a device for determining a source SGSN, which can solve the problem of how the target MME or the target SGSN determines the source SGSN when the SGSN where the UE is located changes.
- a method for determining a source SGSN including: acquiring, by using a Non-Access Stratum (NAS) message sent by a UE, addressing information of a source SGSN; and transmitting, by using a source SGSN, addressing information to a target MME or The target SGSN, so that the target MME or the target SGSN determines the source SGSN based on the addressing information of the source SGSN.
- NAS Non-Access Stratum
- a method for determining a source SGSN including: acquiring, by using an RNC, location information of a source SGSN; and transmitting, by the source SGSN, addressing information to a target MME or a target SGSN, so that the target MME or the target SGSN is based on the source SGSN.
- the addressing information determines the source SGSN.
- a method for determining a source SGSN including: acquiring addressing information of a source SGSN; transmitting, by using a NAS message, addressing information of the source SGSN to the MSC; or transmitting the source SGSN by using a direct transmission message or a cell update message
- the addressing information is sent to the RNC.
- a method for determining a source SGSN including: receiving addressing information of a source SGSN; and transmitting addressing information of the source SGSN to an MSC.
- an apparatus for determining a source SGSN including: a first acquiring unit, configured to acquire addressing information of a source SGSN by using a NAS message sent by the UE; and a sending unit, configured to use the addressing information of the source SGSN
- the target MME or the target SGSN is sent to the target MME or the target SGSN to determine the source SGSN according to the addressing information of the source SGSN.
- an apparatus for determining a source SGSN including: a second acquiring unit, configured to acquire, by using an RNC, location information of a source SGSN; and a sending unit, configured to send, to the target, the addressing information of the source SGSN The MME or the target SGSN, so that the target MME or the target SGSN determines the source SGSN according to the addressing information of the source SGSN.
- an apparatus for determining a source SGSN including: a third acquiring unit, The first sending unit is configured to send the addressing information of the source SGSN to the MSC by using the NAS message, or send the addressing information of the source SGSN to the RNC by using a direct transmission message or a cell update message. .
- an apparatus for determining a source SGSN including: a second receiving unit, configured to receive addressing information of a source SGSN; and a third sending unit, configured to send addressing information of the source SGSN to an MSC .
- the embodiment of the present invention can ensure that the target MME or the target SGSN can determine the source SGSN when the SGSN where the UE is located changes.
- FIG. 1 is a flow chart of a method of determining a source SGSN in accordance with an embodiment of the present invention.
- FIG. 2 is a flow chart of a method of determining a source SGSN in accordance with an embodiment of the present invention.
- FIG. 3 is a flow chart of a method of determining a source SGSN in accordance with an embodiment of the present invention.
- FIG. 4 is a flow chart of a method of determining a source SGSN in accordance with an embodiment of the present invention.
- FIG. 5 is a schematic structural diagram of an apparatus for determining a source SGSN according to an embodiment of the present invention.
- FIG. 6 is a schematic structural diagram of an apparatus for determining a source SGSN according to an embodiment of the present invention.
- FIG. 7 is a schematic structural diagram of an apparatus for determining a source SGSN according to an embodiment of the present invention.
- FIG. 8 is a schematic structural diagram of an apparatus for determining a source SGSN according to an embodiment of the present invention. detailed description
- the technical solution of the present invention can be applied to various communication systems, for example, GSM, Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), general packet Wireless Service (GPRS, General Packet Radio Service), Long Term Evolution (LTE), etc.
- GSM Global System for Mobile Communications
- CDMA Code Division Multiple Access
- WCDMA Wideband Code Division Multiple Access
- GPRS General Packet Radio Service
- LTE Long Term Evolution
- a user equipment which may also be called a mobile terminal (Mobile Terminal), a mobile user equipment, etc., may communicate with one or more core networks via a radio access network (eg, RAN, Radio Access Network).
- the user equipment may be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal, for example, a mobile device that can be portable, pocket, handheld, computer built, or in-vehicle,
- the wireless access network exchanges languages and/or data.
- the base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved base station (eNB or e-NodeB, evolutional Node B) in LTE.
- BTS Base Transceiver Station
- NodeB base station
- eNB evolved base station
- e-NodeB evolutional Node B
- the addressing information of the source SGSN referred to below may be at least one of the following information: NRI (or Packet-Temporary Mobile Subscriber Identity (P-TMSI), RAI (or RAC), Global Core)
- NRI Packet-Temporary Mobile Subscriber Identity
- RAI or RAC
- Global Core The network identifier
- IP Internet Protocol
- the source SGSN refers to the SGSN where the context of the UE is located.
- the target SGSN becomes the source SGSN of the UE.
- the target SGSN is usually the target SGSN of the handover.
- the addressing information of the source SGSN stored on the UE is still the addressing information of the SGSN before the handover.
- the method for determining the source SGSN by the MSC side may be as follows.
- the MSC obtains the addressing information of the source SGSN by using the NAS message sent by the UE.
- the UE occurs during the CS call setup process, after the CS call is established, or after the call is established.
- the UE can actively "" the source SGSN addressing information.
- the UE may carry the addressing information of the source SGSN where the UE is located in the NAS message to the MSC.
- the information of the source SGSN may be carried to the MSC by using a service request (Service Request) or the like.
- the UE Since the UE can directly obtain the addressing information of the source SGSN where the UE is located, it is considered that after the UE moves, that is, the SGSN where the UE is located changes, the UE directly addresses the source SGSN where the UE is located through the NAS message.
- the information is actively reported to the MSC, and then sent by the MSC to the target MME or the target SGSN.
- the MSC When the MSC only receives the RAC, the MSC can use the LAI of the CS domain and the RAC to form the RAI, and then send it to the target MME or the target SGSN along with the NRI (or P-TMSI). Further, the UE may determine that the SGSN changes according to one or more of P-TMSI change, NRI change, and RAI change.
- the MSC may also request the UE to report the addressing information of the source SGSN.
- the MSC may actively obtain the source SGSN addressing information from the UE. .
- the RNC initiates a reverse SRVCC handover, that is, when the MSC receives a reverse SRVCC handover request from the RNC, or when the MSC receives a reverse handover preparation request from the RNC, or before the RNC initiates a reverse SRVCC handover
- the MSC sends an SGSN information report request to the UE, and requests the UE to actively report the addressing information of the SGSN where the UE is located to the MSC through the NAS message, in the process of establishing the CS call, or after the CS call is established.
- the MSC sends the addressing information of the source SGSN to the target MME or the target SGSN, so as to
- the target MME or the target SGSN determines the source SGSN based on the addressing information of the source SGSN.
- the addressing information to the latest source SGSN of the UE, so that the target MME or the target SGSN obtains the preliminary bearer information of the UE from the correct source SGSN.
- the above describes how the MSC obtains the addressing information of the source SGSN directly from the UE.
- the following two scenarios are combined to analyze how the MSC obtains the addressing information of the source SGSN through the RNC.
- the addressing information obtained by the RNC can be either NRI or P-TMSI, or NRI (or P-TMSI) and RAI (or RAC).
- the RNC needs to know the addressing information of the source SGSN where the UE's voice bearer information is located, and then notifies the MSC.
- the MSC receives the address information of the source SGSN after receiving the SGSN, the MME is notified, so that the MME can obtain the PDP from the source SGSN. Context.
- the method for determining the source SGSN by the MSC side may be as follows.
- the MSC obtains the location information of the source SGSN through the RNC.
- the addressing information of the source SGSN is first obtained by the RNC, and then the MSC receives the addressing information of the source SGSN sent by the RNC.
- the manner in which the RNC obtains the addressing information of the source SGSN includes the following: The RNC receives the addressing information of the target SGSN carried by the target SGSN through the migration request message during the migration process; or the RNC receives the source SGSN by using a common identifier (Common ID) or The addressing information of the source SGSN carried by the direct transmission message; or the RNC receives the addressing information of the source SGSN carried by the UE through the uplink direct transmission message or the cell update message; or the RNC obtains the signaling connection with the SGSN from the local SGSN
- the information table obtains the addressing information of the source SGSN; or the UE carries the addressing information of the source SGSN from the initial direct transmission message.
- the UE carries the addressing information of the source SGSN from the initial direct transmission message, which specifically refers to the SGSN addressing information of the PS domain, in addition to the addressing information of the core network that can carry the CS domain.
- the RNC when the RNC initiates the reverse SRVCC handover, the RNC carries the addressing information of the source SGSN to the MSC in the Request Relocation Required message. Or, the RNC receives the UE.
- the addressing information of the initial SGSN is sent, the addressing information of the SGSN to which the current context of the UE belongs is obtained from the switched SGSN or after the RNC and the SGSN establish a connection for the UE, and obtain the addressing information of the current SGSN from the SGSN. Send it to the MSC immediately.
- the MSC sends the addressing information of the source SGSN to the target MME or the target SGSN, so that the target MME or the target SGSN determines the source SGSN according to the addressing information of the source SGSN. Addressing information to the latest source SGSN of the UE, so that the target MME or the target SGSN obtains the preliminary bearer information of the UE from the correct source SGSN.
- Scenario 1 The UE initiates a CS call.
- the UE sends the NAS message to the network through the initial direct transmission message or the uplink direct transmission message.
- the initial direct transmission or the uplink direct transmission RRC message carries the addressing information of the source SGSN where the UE is located.
- the UE when the UE initiates a CS call, the UE sends the initial direct transmission message to the RNC.
- the UE after the UE establishes the CS call, the UE sends the uplink direct transmission message to the RNC.
- the addressing information of the source SGSN where the UE is located is carried in an Access Stratum (AS) message carrying the NAS message (for example, an initial direct transmission or an uplink direct transmission RRC message).
- AS Access Stratum
- the source SGSN carries the source in a Radio Access Network Application Part (RANAP) message such as a downlink direct transmission message or a public identity. Addressing information of the SGSN.
- the UE may establish a signaling connection with the source SGSN by initiating a RAU request or an Attach request, or a Packet Data Protocol (PDP) activation request or the like.
- PDP Packet Data Protocol
- Scenario 2 UE movement occurs RAU process or RNC migration
- the UE After the UE is established, the UE is in the PS idle state. If the UE crosses the RNC, the source RNC may forward the addressing information of the source SGSN to the target RNC during the handover. For example, by carrying the target in an transparent container with an enhanced handover request message or source RNC to the target RNC. RNC. After the handover, if the SGSN of the UE does not change, the RNC continues to use the source RNC to transmit the addressing information of the source SGSN.
- the UE sends an RAU request to the target RNC through the initial direct transmission message, and the target RNC sends the RAU request by using the uplink direct transmission message, after the target SGSN receives the initial UE message provided by the target RNC.
- the addressing information of the SGSN is sent to the target RNC through the public identity. Then, the source SGSN successfully acquires the context of the UE from the SGSN before handover, and sends a RAU accept message to the UE.
- the SGSN may send the addressing information of the source SGSN to the target RNC in the RANAP downlink direct transmission message that sends the RAU accept (accept), or the source SGSN sends the addressing information of the source SGSN through the downlink direct transmission message after confirming that the RAU is completed.
- the RNC After being sent to the target RNC, or after the RNC establishes a connection with the source SGSN, the RNC obtains the addressing information of the source SGSN from the local SGSN information table.
- the target RNC is updated with the addressing information of the source SGSN.
- the UE is forced to initiate the RAU process, so that the RNC establishes a connection with the SGSN that may be changed, so that the changed source SGSN can send the addressing information to the target RNC.
- the UE After receiving the downlink direct transmission message received by the RAU from the target RNC, the UE sends the RAU procedure to the source SGSN by using the uplink direct transmission message, and the new direct SGSN addressing information may be carried in the uplink direct transmission message so that the RNC is in the migration.
- the request message is carried to the MSC.
- Scenario 2 The UE crosses the SGSN.
- the target RNC obtains the latest addressing information from the switched SGSN, that is, the target SGSN addresses the latest source SGSN by using a RANAP message such as a migration request message or a direct transmission message.
- the information is sent to the RNC.
- the target SGSN sends the addressing information of the latest SGSN to the RNC through the migration request message in the handover process, or the SGSN sends the addressing information of the latest source SGSN to the RNC through the direct transmission message after the handover process. .
- Scenario 3 The UE initiates a cell update process.
- the cell update procedure is triggered after cell reselection.
- UE in the community more The new message carries the information of the source SGSN, and the target RNC receives the information and sends it to the source RNC (the serving RNC), and the source RNC sends the RN to the MSC in the handover request.
- the MSC does not need to initiate the process of acquiring the source SGSN information to the UE.
- the source SGSN information received from the RNC is directly used, and the reverse handover request handover message always carries the source SGSN information to the target PS core network node, and continues the subsequent reverse handover process.
- the reverse handover may be initiated, or the UE fails to perform the radio link, the information of the source SGSN is carried in the cell update message. Further, the UE determines that CS voice is being used before the cell update procedure.
- the information of the source SGSN is carried in the handover request message when the source RNC determines that the reverse handover is to be initiated.
- the method of the scenario 3 can solve the problem that the MSC cannot request the UE to send the source SGSN addressing information through the NAS message during the reverse handover process triggered by the UE in the cell update. Because the signaling bearer carrying the NAS message has not been established before receiving the cell update confirmation, the NAS message cannot be received.
- the RNC After the RNC obtains the latest source SGSN addressing information, the RNC notifies the MSC of the addressing information.
- the RNC may carry the addressing information of the latest source SGSN to the MSC in the migration request message when initiating a reverse SRVCC handover. For example, after the RNC receives the initial source SGSN addressing information sent by the UE, or obtains the addressing information of the latest source SGSN of the UE from the new source SGSN, the RNC carries the latest source SGSN in the direct transmission message. The addressing information is sent to the MSC.
- the addressing information carried by the RNC to the MSC may be a combination processing or extraction of information received from the SGSN or the UE and local information.
- the MSC When the MSC receives the latest source SGSN addressing information sent by the RNC, it updates to the latest Addressing information of the source SGSN.
- a method of determining a source SGSN by a UE side is as follows.
- the UE acquires addressing information of the source SGSN.
- the UE before acquiring the addressing information of the source SGSN, the UE receives the reporting request of the addressing information of the sending source SGSN sent by the MSC.
- the UE sends the addressing information of the source SGSN to the MSC through the NAS message, or sends the addressing information of the source SGSN to the RNC by using a direct transmission message or a cell update message.
- a method for determining a source SGSN by an RNC side includes:
- the RNC obtains the addressing information of the source SGSN.
- the target RNC receives the addressing information of the target SGSN carried by the target SGSN through the migration request message during the migration process; or receives the addressing information of the source SGSN carried by the target SGSN through the public identity or direct transmission message; or receives the UE through The addressing information of the source SGSN carried by the direct transmission message or the cell update message.
- the target RNC sends an uplink signaling transmission indication message to the source RNC to forward the received cell update message to the source RNC.
- the source RNC decides to initiate a reverse handover, the received addressing information of the source SGSN is placed in the migration request message and sent to the MSC.
- the target RNC takes the addressing information of the source SGSN and sends the information to the source RNC in the uplink signaling transmission indication message.
- the RNC sends the addressing information of the source SGSN to the MSC.
- the RNC sends the addressing information of the source SGSN carried by the migration request message or the direct transmission message to the MSC.
- the method for determining the source SGSN can ensure that the MSC obtains the addressing information of the latest source SGSN of the UE, so that the target MME or the target SGSN obtains the preliminary bearer information of the UE from the correct source SGSN.
- the source SGSN addressing information may be obtained from the RNC.
- the solution can be combined.
- the UE reports the information to the MSC through the NAS message.
- the UE or the RNC reports the changed SGSN addressing information to the MSC.
- the apparatus 50 for determining the source SGSN includes a first obtaining unit 51 and a first transmitting unit 52.
- the first obtaining unit 51 is configured to obtain the addressing information of the source SGSN by using the NAS message sent by the UE, where the first sending unit 52 is configured to send the addressing information of the source SGSN to the target MME or the target SGSN, so as to target the MME.
- the target SGSN determines the source SGSN according to the addressing information of the source SGSN.
- the apparatus 50 for determining the source SGSN may further include a first requesting unit 53, configured to request the UE to send the addressing information of the source SGSN before acquiring the addressing information of the source SGSN by using the NAS message sent by the UE.
- a first requesting unit 53 configured to request the UE to send the addressing information of the source SGSN before acquiring the addressing information of the source SGSN by using the NAS message sent by the UE.
- the apparatus 60 for determining the source SGSN includes a second acquisition unit 61 and a first transmission unit 62.
- the second obtaining unit 61 is configured to obtain the location information of the source SGSN by using the RNC. Further, the second obtaining unit 61 is configured to receive addressing information of the source SGSN carried by the RNC through the migration request message or the direct message.
- the first sending unit 62 is configured to send the addressing information of the source SGSN to the target MME or the target SGSN, so that the target MME or the target SGSN determines the source SGSN according to the addressing information of the source SGSN.
- the apparatus 70 for determining the source SGSN includes a third acquisition unit 71 and a second transmission unit 72.
- the third obtaining unit 71 is configured to obtain addressing information of the source SGSN.
- the second sending unit 72 is configured to send the addressing information of the source SGSN to the MSC through the NAS message; or send the addressing information of the source SGSN to the RNC by using a direct transmission message or a cell update message.
- the apparatus 70 for determining the source SGSN may further include a first receiving unit 73, configured to receive a report request of the addressing information of the source SGSN sent by the MSC before acquiring the addressing information of the source SGSN.
- a first receiving unit 73 configured to receive a report request of the addressing information of the source SGSN sent by the MSC before acquiring the addressing information of the source SGSN.
- the apparatus 80 for determining the source SGSN includes a second receiving unit 81 and a third transmission.
- the unit 82 is sent.
- the second receiving unit 81 is configured to receive addressing information of the source SGSN. Further, the second receiving unit 81 may be configured to receive addressing information of the target SGSN that is carried by the target SGSN by the migration request message during the migration process; or receive the addressing information of the source SGSN that is carried by the source SGSN by using the public identifier or the direct transmission message. Or receiving the addressing information of the source SGSN carried by the UE through the direct transmission message or the cell update message.
- the third sending unit 82 is configured to send the addressing information of the source SGSN to the MSC. Further, the third sending unit 82 can be configured to send the addressing information of the source SGSN carried by the migration request message or the direct transmission message to the MSC.
- the device 50 or 60 that determines the source SGSN may be an MSC
- the device 60 that determines the source SGSN may be a UE
- the device 70 that determines the source SGSN may be an RNC.
- the apparatus for determining the source SGSN can ensure that the MSC obtains the addressing information of the latest source SGSN of the UE, so that the target MME or the target SGSN obtains the preliminary bearer information of the UE from the correct source SGSN.
- the disclosed systems, devices, and methods may be implemented in other ways.
- 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 for example, multiple units or components may be combined or Can be integrated Go to another system, or some features can be ignored, or not executed.
- the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
- the components displayed as units may or may not be physical units, that is, may be located in one place, or may be 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 processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
- the functions, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium.
- the technical solution of the present invention which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
- the instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform all or part of the steps of the methods described in various embodiments of the present invention.
- the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes. .
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Abstract
本发明实施例提供了一种确定源SGSN的方法和装置。其中,确定源SGSN的方法,包括:通过UE发送的NAS消息获取源SGSN的寻址信息;将所述源SGSN的寻址信息发送给目标MME或目标SGSN,以便目标MME或目标SGSN根据所述源SGSN的寻址信息确定源SGSN。本发明实施例可以保障MSC获取到UE最新的源SGSN的寻址信息,以便目标MME或目标SGSN从正确的源SGSN获得UE的预备承载信息。
Description
确定源 SGSN 的方法和装置 本申请要求于 2012 年 02 月 24 日提交中国专利局、 申请号为 201210044488.9、 发明名称为"确定源 SGSN 的方法和装置 "和 2012年 09 月 13 日提交中国专利局、 申请号为 201210337796.0、 发明名称为"确定源 SGSN 的方法和装置"的中国专利申请的优先权, 其全部内容通过引用结合 在本申请中。
技术领域
本发明实施例涉及通信领域, 并且更具体地, 涉及确定源通用分组无 线业务( GPRS, General Packet Radio Service )服务支持节点( SGSN, Serving GPRS Support Node ) 的方法和装置。 背景技术
在现有技术中, 用户设备( User Equipment, UE )在发送路由区更新 ( Routing Area Update , RAU )请求消息的初始直传消息中上报网络资源标 识(Network Resource Identifier, NRI )给无线网络控制器( Radio Network Controller, RNC ),再由 RNC将路由区域标识( Routing Area Identifier, RAI ) 与 NRI上才艮给移动交换中心( Mobile Switching Center, MSC ),最后由 MSC 发送给目标移动性管理实体 ( Mobility Management Entity, MME )或目标 SGSN, 以便目标 MME或目标 SGSN根据 RAI与 NRI确定 UE所在的源 SGSN并获取 UE在该源 SGSN上的上下文。
在 RNC发起反向单射频语言连续性(Reverse Single Radio Voice Call Continuity, SRVCC )切换(即从电路交换域 ( Circuit Switched Domain, CS 域)切换到分组交换域(Packet Switched Domain, PS域) 时, 通常在迁移 请求( Relocation Required ) 消息中将 UE上报的 RAI与 NRI发送给 MSC。
其中, 在反向 SRVCC切换过程中, 目标 MME或目标 SGSN向 UE所在的 SGSN获取 UE的上下文。
一般而言, SGSN 的寻址信息可以釆用 RAI FQDN 结构, 即 息包含 RAI与 NRI等, 从而目标 MME或目标 SGSN可以通过上述寻址信 息来连接到 UE所在的源 SGSN。其中, RAI由移动国家码( Mobile Country Code, MCC )、 移动网络码(Mobile Netowrk Code, MNC )、 位置区域码 ( Location Area Code, LAC )和路由区域码( Routing Area Code, RAC )组 成。
但是, UE在发起 CS呼叫 (如语音呼叫)后, 若 UE支持反向 SRVCC 切换,则 UE会在 RNC发起反向 SRVCC切换时发起 RAU过程,使得 RNC 能从初始直传消息(例如 RAU请求消息)中获得 UE的 NRI, 同时保证 UE 的 RAI和 UE所在的小区的 RAI是一致的。 在 RNC发起反向 SRVCC切换 时, 在迁移请求消息中携带 RAI与 NRI发给 MSC, 再由 MSC发给目标 MME或目标 SGSN。 当 RNC不能与源 SGSN相连, 所以 RNC会重新选择 一个新的 SGSN, 所以 UE上报的 NRI无效。若 UE处于 CS连接态,若 UE 发生跨 RNC的切换后,即使在切换后 UE发起 RAU过程,用上行直传( Direct Transfer ) 消息发送 RAU请求消息 , 保证 UE的 RAI和 UE所在的小区的 RAI是一致的。 可是, 上行直传消息不包含 NRI, 当 UE所在的 SGSN变化 时, RNC仍无法获取到新的源 SGSN的寻址信息。
或者, 当 UE处于 PS连接态时, 若 UE发生跨 SGSN的切换后, 假如 RAI 发生变化, 在 RNC没有将新 RAI通知给 UE的情况下, RNC无法获得切换后 UE所在的源 SGSN的 RAI。 即使 RNC将 RAI发生变化通知给 UE, 因为 RAI发 生变化, UE收到上述通知后会发起 RAU过程,使得 UE获得新的 RAI。可是, 此时 UE所在的 SGSN变化时, UE使用上行直传消息发送 RAU请求, 该消息 不携带 NRI, 即使携带了 NRI, 仍然存在 RNC不能选择到 NRI指示的 SGSN
的情况, 即 NRI发生变化, 因此 RNC仍无法获取到新的源 SGSN的寻址信息。 发明内容
本发明实施例提供一种确定源 SGSN 的方法和装置, 能够解决在 UE 所在的 SGSN变化时, 目标 MME或目标 SGSN如何确定源 SGSN的问题。
一方面,提供了一种确定源 SGSN的方法, 包括: 通过 UE发送的非接 入层(Non Access Stratum ) NAS消息获取源 SGSN的寻址信息;将源 SGSN 的寻址信息发送给目标 MME或目标 SGSN, 以便目标 MME或目标 SGSN 根据源 SGSN的寻址信息确定源 SGSN。
另一方面, 提供了一种确定源 SGSN的方法, 包括: 通过 RNC获取源 SGSN的选址信息;将源 SGSN的寻址信息发送给目标 MME或目标 SGSN, 以便目标 MME或目标 SGSN根据源 SGSN的寻址信息确定源 SGSN。
再一方面, 提供了一种确定源 SGSN的方法, 包括: 获取源 SGSN的 寻址信息; 通过 NAS消息将源 SGSN的寻址信息发送给 MSC; 或者通过 直传消息或小区更新消息将源 SGSN的寻址信息发送给 RNC。
又一方面, 提供了一种确定源 SGSN的方法, 包括: 接收源 SGSN的 寻址信息; 将所述源 SGSN的寻址信息发送给 MSC。
一方面, 提供了一种确定源 SGSN的装置, 包括: 第一获取单元, 用 于通过 UE发送的 NAS消息获取源 SGSN的寻址信息; 发送单元, 用于将 所述源 SGSN的寻址信息发送给目标 MME或目标 SGSN, 以便目标 MME 或目标 SGSN根据所述源 SGSN的寻址信息确定源 SGSN。
另一方面, 提供了一种确定源 SGSN的装置, 包括: 第二获取单元, 用于通过 RNC获取源 SGSN的选址信息; 发送单元, 用于将所述源 SGSN 的寻址信息发送给目标 MME或目标 SGSN, 以便目标 MME或目标 SGSN 根据所述源 SGSN的寻址信息确定源 SGSN。
再一方面, 提供了一种确定源 SGSN的装置, 包括: 第三获取单元,
用于获取源 SGSN 的寻址信息; 第二发送单元, 用于通过 NAS 消息将源 SGSN 的寻址信息发送给 MSC; 或者通过直传消息或小区更新消息将源 SGSN的寻址信息发送给 RNC。
又一方面, 提供了一种确定源 SGSN的装置, 包括: 第二接收单元, 用于接收源 SGSN的寻址信息; 第三发送单元, 用于将所述源 SGSN的寻 址信息发送给 MSC。
本发明实施例可以保障在 UE所在的 SGSN变化时, 目标 MME或目标 SGSN可以确定源 SGSN。 附图说明
为了更清楚地说明本发明实施例的技术方案, 下面将对实施例或现有 技术描述中所需要使用的附图作简单地介绍, 显而易见地, 下面描述中的 附图仅仅是本发明的一些实施例, 对于本领域普通技术人员来讲, 在不付 出创造性劳动的前提下, 还可以根据这些附图获得其他的附图。
图 1是根据本发明实施例的确定源 SGSN的方法的流程图。
图 2是根据本发明实施例的确定源 SGSN的方法的流程图。
图 3是才艮据本发明实施例的确定源 SGSN的方法的流程图。
图 4是根据本发明实施例的确定源 SGSN的方法的流程图。
图 5是根据本发明实施例的确定源 SGSN的装置的结构示意图。
图 6是根据本发明实施例的确定源 SGSN的装置的结构示意图。
图 7是根据本发明实施例的确定源 SGSN的装置的结构示意图。
图 8是根据本发明实施例的确定源 SGSN的装置的结构示意图。 具体实施方式
下面将结合本发明实施例中的附图, 对本发明实施例中的技术方案进 行清楚、 完整地描述, 显然, 所描述的实施例是本发明一部分实施例, 而
不是全部的实施例。 基于本发明中的实施例, 本领域普通技术人员在没有 作出创造性劳动前提下所获得的所有其他实施例, 都属于本发明保护的范 围。
本发明的技术方案, 可以应用于各种通信系统, 例如: GSM, 码分多 址( CDMA, Code Division Multiple Access )系统,宽带码分多址( WCDMA, Wideband Code Division Multiple Access Wireless ) , 通用分组无线业务 ( GPRS , General Packet Radio Service ), 长期演进 (LTE , Long Term Evolution )等。
用户设备 ( UE , User Equipment ) , 也可称之为移动终端 ( Mobile Terminal ),移动用户设备等,可以经无线接入网(例如, RAN, Radio Access Network )与一个或多个核心网进行通信, 用户设备可以是移动终端, 如移 动电话(或称为"蜂窝"电话)和具有移动终端的计算机, 例如, 可以是便携 式、 袖珍式、 手持式、 计算机内置的或者车载的移动装置, 它们与无线接 入网交换语言和 /或数据。
基站, 可以是 GSM或 CDMA中的基站( BTS, Base Transceiver Station ), 也可以是 WCDMA中的基站( NodeB ), 还可以是 LTE中的演进型基站( eNB 或 e-NodeB, evolutional Node B ), 本发明并不限定, 但为描述方便, 下述 实施例以 Node B为例进行说明。
下面将结合附图描述根据本发明实施例的确定源 SGSN的方法。 以 下所称的源 SGSN的寻址信息可以为以下信息中的至少一个: NRI (或分组 i或用户临时标识符( Packet-Temporary Mobile Subscriber Identity, P-TMSI )、 RAI (或 RAC )、 全球核心网标识(Global CN-ID )、 或者源 SGSN在核心网 ( Core Netowrk, CN ) 的网际协议 ( Internet Protocol, IP )地址)。
源 SGSN是指 UE的上下文所在的 SGSN。 比如, 在跨 SGSN切换后, 目 标 SGSN成为 UE的源 SGSN。 目标 SGSN通常是切换的目标 SGSN, 此时 UE 上存储的源 SGSN的寻址信息仍为切换前的 SGSN的寻址信息。
在图 1中,才艮据本发明实施例的 MSC侧确定源 SGSN的方法可以如下 所述。
11 , MSC通过 UE发送的 NAS消息获取源 SGSN的寻址信息。
通常, UE在 CS呼叫建立过程中、 CS呼叫建立完成后或在移动后发生
SGSN变更后, UE可以主动上 "^源 SGSN的寻址信息。
此时, UE可以在 NAS消息中携带 UE所在的源 SGSN的寻址信息给 MSC , 比如可以通过服务请求 (Service Request )等消息携带源 SGSN的寻址信息 给 MSC。
由于 UE—直能获取其所在的源 SGSN的寻址信息, 因此考虑在 UE发生 移动后, 即 UE所在的 SGSN发生变化的情况下, 直接由 UE通过 NAS消息将 UE所在的源 SGSN的寻址信息主动上报给 MSC, 再由 MSC发送给目标 MME 或目标 SGSN。 当 MSC只收到 RAC时, MSC可用 CS域的 LAI和该 RAC组成 RAI, 再与 NRI (或 P-TMSI ) —同发送给目标 MME或目标 SGSN。 进一步, UE可以根据 P-TMSI变更、 NRI变更、 RAI变更中的一个或多个来确定 SGSN 发生变化。
可选的,在通过 UE发送的 NAS消息获取源 SGSN的寻址信息之前, MSC 也可以请求 UE上报源 SGSN的寻址信息。
通常, 在 MSC收到反向 SRVCC切换请求或 SRVCC预备切换请求、 或者 在 CS呼叫建立过程中、 或者 CS呼叫建立完成后、 或者 SGSN发生切换后, MSC可以主动向 UE获取源 SGSN的寻址信息。
例如, 当 RNC发起反向 SRVCC切换时, 即当 MSC收到 RNC发出的反向 SRVCC切换请求时, 或者 MSC收到 RNC发出的反向切换预备请求时, 或者 当 RNC发起反向 SRVCC切换之前(包括 CS呼叫建立过程中、 CS呼叫建立完 成后或发生切换后), MSC向 UE发送 SGSN信息上报请求,请求 UE通过 NAS 消息将 UE所在的 SGSN的寻址信息主动上报给 MSC。
12, MSC将源 SGSN的寻址信息发送给目标 MME或目标 SGSN, 以便目
标 MME或目标 SGSN根据该源 SGSN的寻址信息确定源 SGSN。 到 UE最新的源 SGSN的寻址信息, 以便目标 MME或目标 SGSN从正确的源 SGSN获得 UE的预备承载信息。
以上描述了 MSC如何从 UE处直接获得源 SGSN的寻址信息的方式, 下 面再结合 2种场景分析 MSC如何通过 RNC获取源 SGSN的寻址信息的方式。
RNC所获取的寻址信息可以只是 NRI或 P-TMSI, 也可以是 NRI (或 P-TMSI ) 和 RAI (或 RAC )。 RNC需要获知 UE的语音承载信息所在的源 SGSN的寻址 信息, 然后通知给 MSC, 当 MSC收到后保存或更新源 SGSN的寻址信息, 将 通知 MME, 使得 MME能从源 SGSN获取到 PDP上下文。
如图 2所示,根据本发明实施例的 MSC侧确定源 SGSN的方法可以如 下所述。
21 , MSC通过 RNC获取源 SGSN的选址信息。
即,先由 RNC获取源 SGSN的寻址信息, 然后 MSC再接收 RNC发送 的源 SGSN的寻址信息。
其中 RNC获取源 SGSN的寻址信息的方式包括以下几种: RNC接收 目标 SGSN在迁移过程中通过迁移请求消息携带的目标 SGSN的寻址信息; 或者 RNC接收源 SGSN通过公共标识(Common ID )或直传消息携带的源 SGSN的寻址信息; 或者 RNC接收 UE通过上行直传消息或小区更新消息 携带的源 SGSN的寻址信息; 或者 RNC在与 SGSN为建立 UE的信令连接 后从本地 SGSN信息表获取到源 SGSN的寻址信息; 或者 UE从初始直传 消息中携带源 SGSN的寻址信息。其中,UE从初始直传消息中携带源 SGSN 的寻址信息, 具体是指除了可携带 CS域的核心网寻址信息外,还允许携带 PS域的 SGSN寻址信息。
具体而言, RNC在发起反向 SRVCC切换时, 在请求迁移 (Relocation Required ) 消息中携带源 SGSN的寻址信息给 MSC。 或者, RNC收到 UE
发送的初始的 SGSN的寻址信息时、 从切换后的 SGSN获取到 UE的当前 上下文所属的 SGSN的寻址信息或者在 RNC和 SGSN为 UE建立连接后从 SGSN获取到当前 SGSN的寻址信息后立即发给 MSC。
22, MSC将源 SGSN的寻址信息发送给目标 MME或目标 SGSN, 以 便目标 MME或目标 SGSN根据该源 SGSN的寻址信息确定源 SGSN。 到 UE最新的源 SGSN的寻址信息, 以便目标 MME或目标 SGSN从正确的源 SGSN获得 UE的预备承载信息。
场景一: UE发起 CS呼叫
UE通过初始直传消息或上行直传消息发送 NAS消息给网络, 此时在 初始直传或上行直传的 RRC消息中携带 UE所在的源 SGSN的寻址信息。
比如, 在 UE发起 CS呼叫时, UE通过初始直传消息发送给 RNC; 或 者, 在 UE建立 CS呼叫后, UE通过上行直传消息发送给 RNC。 其中, 在 承载 NAS消息的接入层 (Access Stratum, AS ) 消息 (例如, 初始直传或 上行直传的 RRC消息) 中携带 UE所在的源 SGSN的寻址信息。
比如, UE在 CS呼叫建立后, 在 UE和源 SGSN建立信令连接时, 源 SGSN在下行直传消息或公共标识等无线接入网络应用部分(Radio Access Network Application Part, RANAP ) 消息中携带源 SGSN的寻址信息。 UE 可以通过发起 RAU请求或附着( Attach )请求、或者包数据协议( Packet Data Protocol, PDP )激活请求等与源 SGSN建立信令连接。 需要说明的是, 若 UE在 CS呼叫建立后若无需发起 NAS消息, 这里可以强制 UE发起 RAU 过程。
场景二: UE移动发生 RAU过程或 RNC迁移
UE在 CS呼叫建立后, UE处于 PS空闲态,若 UE发生跨 RNC切换时, 源 RNC可在切换过程中传递源 SGSN的寻址信息给目标 RNC。 比如通过 在增强的切换请求消息或源 RNC 到目标 RNC 的透明容器中携带给目标
RNC。 在切换后, 若 UE的 SGSN没有变化, RNC继续使用源 RNC发送得 到源 SGSN的寻址信息。
若在跨 RNC切换后, UE发起 RAU过程, UE通过初始直传消息向目 标 RNC发送 RAU请求, 目标 RNC通过上行直传消息发送 RAU请求, 目 标 SGSN在接收到目标 RNC提供的初始 UE消息之后, 通过公共标识将 SGSN的寻址信息发送给目标 RNC。 于是, 源 SGSN从切换前的 SGSN成 功获取 UE的上下文, 发送 RAU接受消息给 UE。 SGSN可在发送 RAU接 受(accept )的 RANAP下行直传消息中将源 SGSN的寻址信息发送给目标 RNC, 或者源 SGSN在确认完成 RAU 完成后再通过下行直传消息将源 SGSN的寻址信息发送给目标 RNC, 或者在 RNC与源 SGSN建立 UE的连 接后, RNC从本地 SGSN信息表获取到源 SGSN的寻址信息。 目标 RNC 用该源 SGSN的寻址信息进行更新。
可选的, 在切换后强制 UE发起 RAU过程, 使得 RNC和可能变更的 SGSN建立连接, 使得变更后的源 SGSN可以下发寻址信息给目标 RNC。
当 UE从目标 RNC接收到 RAU接受的下行直传消息后, 将通过上行 直传消息发送 RAU过程完成给源 SGSN, 可在该上行直传消息中携带新的 源 SGSN寻址信息以便 RNC在迁移请求消息中携带给 MSC。
场景二: UE发生跨 SGSN的切换
若 UE处于 PS连接态, 若发生跨 SGSN切换, 目标 RNC从切换后的 SGSN 获取到最新的寻址信息, 即目标 SGSN通过迁移请求消息或直传消息等 RANAP消息将最新的源 SGSN的寻址信息下发给 RNC。 具体而言, 目标 SGSN在切换过程中通过迁移请求消息将最新的 SGSN的寻址信息下发给 RNC, 或者 SGSN在切换过程之后通过直传消息将最新的源 SGSN的寻址信 息下发给 RNC。
场景三: UE发起小区更新过程
当 UE进行小区重选, 在小区重选后触发小区更新过程。 UE在小区更
新消息中携带源 SGSN的信息, 目标 RNC收到后发送给源 RNC (服务 RNC ), 源 RNC在切换请求中发给 MSC。 此时, MSC不需要再向 UE发起 获取源 SGSN信息的过程。 直接使用从 RNC收到的源 SGSN信息, 在反向 切换请求切换消息胡总携带源 SGSN信息给目标 PS核心网节点,继续后续 的反向切换过程。
可选的, 当 UE确定支持反向 SRVCC切换能力、 可能会发起反向切换 时或 UE在无线链路失败后才在小区更新消息中携带源 SGSN的信息。进一 步, UE确定在小区更新过程前正在使用 CS语音。
可选的, 当源 RNC确定要发起反向切换时才在切换请求消息中携带源 SGSN的信息。
触发小区重选的场景: 发生无线链路失败后, 或者在小区前向接入信 道 CELL— FACH态进行小区重选。
通过场景三的方法,可以解决在 UE在小区更新触发的反向切换过程中, MSC不能通过 NAS消息请求 UE发送源 SGSN寻址信息的信息。 因为在收到 小区更新确认之前, 承载 NAS消息的信令承载还没有建立, 所以无法接收 NAS消息。
通过以上方法, 当 RNC获得最新的源 SGSN的寻址信息之后, RNC将该 寻址信息通知给 MSC。
例如, RNC可以在发起反向 SRVCC切换时, 在迁移请求消息中携带最 新的源 SGSN的寻址信息给 MSC。 再例如, 在 RNC收到 UE发送的初始的源 SGSN的寻址信息时, 或者从新的源 SGSN获取到 UE的最新的源 SGSN的寻 址信息之后, RNC在直传消息中携带最新的源 SGSN的寻址信息发送给 MSC。
RNC携带给 MSC的寻址信息可以是对从 SGSN或 UE收到的信息和本 地的信息进行组合处理或者进行提取。
当 MSC收到 RNC发送的最新的源 SGSN的寻址信息, 则更新为最新
的源 SGSN的寻址信息。
由上述内容, 可以概括出根据本发明实施例的 UE侧及 RNC侧确定源 SGSN的方法。
在图 3中, 根据本发明实施例的 UE侧确定源 SGSN的方法如下所述。
31 , UE获取源 SGSN的寻址信息。
可选地, 在获取源 SGSN的寻址信息之前, UE接收 MSC发送的发送 源 SGSN的寻址信息的上报请求。
32, UE通过 NAS消息将源 SGSN的寻址信息发送给 MSC; 或者通过 直传消息或小区更新消息将源 SGSN的寻址信息发送给 RNC。
在图 4中, 根据本发明实施例的 RNC侧确定源 SGSN的方法包括:
41 , RNC获取源 SGSN的寻址信息。
具体而言, 目标 RNC接收目标 SGSN在迁移过程中通过迁移请求消息 携带的目标 SGSN的寻址信息; 或者接收目标 SGSN通过公共标识或直传 消息携带的源 SGSN的寻址信息;或者接收 UE通过直传消息或小区更新消 息携带的源 SGSN的寻址信息。
当 UE小区更新消息触发跨 RNC迁移过程, 目标 RNC向源 RNC发送 上行信令传输指示消息把收到的小区更新消息转给源 RNC。当源 RNC决定 要发起反向切换时, 把收到的源 SGSN的寻址信息放在迁移请求消息中发 给 MSC。 可选的, 目标 RNC收到小区更新消息后, 取出源 SGSN的寻址 信息, 在上行信令传输指示消息中发给源 RNC。
42, RNC将源 SGSN的寻址信息发送给 MSC。
例如, RNC通过迁移请求消息或直传消息携带的源 SGSN的寻址信息 发送给 MSC。 由上可知, 根据本发明实施例的确定源 SGSN的方法可以保 障 MSC获取到 UE最新的源 SGSN的寻址信息, 以便目标 MME或目标 SGSN从正确的源 SGSN获得 UE的预备承载信息。
对于上述 MSC从 UE获取的方案可以和从 RNC获取源 SGSN寻址信
息的方案可以结合使用。 比如 UE先通过 NAS消息上报给 MSC, 在 UE所 属的 SGSN发生变化后, UE或 RNC将变化后的 SGSN寻址信息再上报给 MSC。
以下将结合图 5至图 8描述根据本发明实施例的确定源 SGSN的装置。 如图 5所示,确定源 SGSN的装置 50包括第一获取单元 51、第一发送 单元 52。其中,第一获取单元 51用于通过 UE发送的 NAS消息获取源 SGSN 的寻址信息, 第一发送单元 52用于将所述源 SGSN的寻址信息发送给目标 MME或目标 SGSN, 以便目标 MME或目标 SGSN根据所述源 SGSN的寻 址信息确定源 SGSN。
可选地,确定源 SGSN的装置 50还可以包括第一请求单元 53 ,其用于 在通过 UE发送的 NAS消息获取源 SGSN的寻址信息之前, 请求 UE发送 所述源 SGSN的寻址信息。
如图 6所示, 确定源 SGSN的装置 60包括第二获取单元 61和第一发 送单元 62。 其中, 第二获取单元 61用于通过 RNC获取源 SGSN的选址信 息。 进一步地, 第二获取单元 61可用于接收 RNC通过迁移请求消息或直 传消息携带的源 SGSN的寻址信息。 第一发送单元 62用于将所述源 SGSN 的寻址信息发送给目标 MME或目标 SGSN, 以便目标 MME或目标 SGSN 根据所述源 SGSN的寻址信息确定源 SGSN。
如图 7所示, 确定源 SGSN的装置 70包括第三获取单元 71和第二发 送单元 72。 其中, 第三获取单元 71用于获取源 SGSN的寻址信息。 第二发 送单元 72用于通过 NAS消息将源 SGSN的寻址信息发送给 MSC; 或者通 过直传消息或小区更新消息将源 SGSN的寻址信息发送给 RNC。
可选地,确定源 SGSN的装置 70还可以包括第一接收单元 73 ,用于在 获取源 SGSN的寻址信息之前,接收 MSC发送的发送源 SGSN的寻址信息 的上报请求。
如图 8所示, 确定源 SGSN的装置 80包括第二接收单元 81和第三发
送单元 82。 其中, 第二接收单元 81用于接收源 SGSN的寻址信息。 进一步 地, 第二接收单元 81可以用于接收目标 SGSN在迁移过程中通过迁移请求 消息携带的目标 SGSN的寻址信息; 或者接收源 SGSN通过公共标识或直 传消息携带的源 SGSN的寻址信息;或者接收 UE通过直传消息或小区更新 消息携带的源 SGSN的寻址信息。
第三发送单元 82用于将所述源 SGSN的寻址信息发送给 MSC。 进一 步地, 第三发送单元 82 可以用于通过迁移请求消息或直传消息携带的源 SGSN的寻址信息发送给 MSC。
其中, 确定源 SGSN的装置 50或 60可以是 MSC, 确定源 SGSN的装 置 60可以是 UE, 确定源 SGSN的装置 70可以是 RNC。
由上可知,根据本发明实施例的确定源 SGSN的装置可以保障 MSC获 取到 UE最新的源 SGSN的寻址信息,以便目标 MME或目标 SGSN从正确 的源 SGSN获得 UE的预备承载信息。
本领域普通技术人员可以意识到, 结合本文中所公开的实施例描述的 各示例的单元及算法步骤, 能够以电子硬件、 或者计算机软件和电子硬件 的结合来实现。 这些功能究竟以硬件还是软件方式来执行, 取决于技术方 案的特定应用和设计约束条件。 专业技术人员可以对每个特定的应用来使 用不同方法来实现所描述的功能, 但是这种实现不应认为超出本发明的范 围。
所属领域的技术人员可以清楚地了解到, 为描述的方便和简洁, 上述 描述的系统、 装置和单元的具体工作过程, 可以参考前述方法实施例中的 对应过程, 在此不再赘述。
在本申请所提供的几个实施例中, 应该理解到, 所揭露的系统、 装置 和方法, 可以通过其它的方式实现。 例如, 以上所描述的装置实施例仅仅 是示意性的, 例如, 所述单元的划分, 仅仅为一种逻辑功能划分, 实际实 现时可以有另外的划分方式, 例如多个单元或组件可以结合或者可以集成
到另一个系统, 或一些特征可以忽略, 或不执行。 另一点, 所显示或讨论 的相互之间的耦合或直接耦合或通信连接可以是通过一些接口, 装置或单 元的间接耦合或通信连接, 可以是电性, 机械或其它的形式。 作为单元显示的部件可以是或者也可以不是物理单元, 即可以位于一个地 方, 或者也可以分布到多个网络单元上。 可以根据实际的需要选择其中的 部分或者全部单元来实现本实施例方案的目的。
另外, 在本发明各个实施例中的各功能单元可以集成在一个处理单元 中, 也可以是各个单元单独物理存在, 也可以两个或两个以上单元集成在 一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使 用时, 可以存储在一个计算机可读取存储介质中。 基于这样的理解, 本发 明的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的 部分可以以软件产品的形式体现出来, 该计算机软件产品存储在一个存储 介质中, 包括若干指令用以使得一台计算机设备(可以是个人计算机, 服 务器, 或者网络设备等)或处理器(processor )执行本发明各个实施例所述 方法的全部或部分步骤。 而前述的存储介质包括: U盘、 移动硬盘、 只读 存储器( ROM, Read-Only Memory )、随机存取存储器( RAM, Random Access Memory )、 磁碟或者光盘等各种可以存储程序代码的介质。
以上所述, 仅为本发明的具体实施方式, 但本发明的保护范围并不局 限于此, 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内, 可 轻易想到变化或替换, 都应涵盖在本发明的保护范围之内。 因此, 本发明 的保护范围应所述以权利要求的保护范围为准。
Claims
1、 一种确定源通用分组无线业务服务支持节点 SGSN的方法, 其特征 在于, 包括:
通过用户设备 UE发送的非接入层 NAS消息获取源 SGSN的寻址信息; 将所述源 SGSN的寻址信息发送给目标移动性管理实体 MME或目标
SGSN, 以便目标 MME或目标 SGSN根据所述源 SGSN的寻址信息确定源
SGSN。
2、 根据权利要求 1所述的方法, 其特征在于, 在所述通过 UE发送的 NAS消息获取源 SGSN的寻址信息之前, 还包括:
请求 UE发送所述源 SGSN的寻址信息。
3、 根据权利要求 1或 2所述的方法, 其特征在于, 所述源 SGSN的寻 址信息包括以下中的一个或多个: 网络资源标识 NRI, 分组域用户临时标 识符 P-TMSI, 路由区域标识 RAI, 路由区域码 RAC, 全球核心网标识, 和 源 SGSN在核心网 CN的网际协议 IP地址。
4、 一种确定源通用分组无线业务服务支持节点 SGSN的方法, 其特征 在于, 包括:
通过无线网络控制器获取源 SGSN的选址信息;
将所述源 SGSN的寻址信息发送给目标移动性管理实体 MME或目标 SGSN, 以便目标 MME或目标 SGSN根据所述源 SGSN的寻址信息确定源 SGSN。
5、 根据权利要求 4所述的方法, 其特征在于, 所述通过无线网络控制 器获取源 SGSN的选址信息包括:
无线网络控制器获取源 SGSN的寻址信息;
接收所述无线网络控制器发送的所述源 SGSN的寻址信息。
6、 根据权利要求 5所述的方法, 其特征在于, 所述无线网络控制器获 取源 SGSN的寻址信息包括:
无线网络控制器接收目标 SGSN在迁移过程中通过迁移请求消息携带 的目标 SGSN的寻址信息; 或者
无线网络控制器接收源 SGSN 通过公共标识或直传消息携带的源 SGSN的寻址信息; 或者
无线网络控制器接收用户设备 UE通过直传消息携带的源 SGSN的寻址 信息; 或者
无线网络控制器接收用户设备 UE通过小区更新消息携带的源 SGSN 的寻址信息。
7、 根据权利要求 5或 6所述的方法, 其特征在于, 所述接收无线网络 控制器发送的所述源 SGSN的寻址信息包括:
接收无线网络控制器通过迁移请求消息或直传消息携带的源 SGSN的 寻址信息。
8、根据权利要求 4至 7中任一项所述的方法,其特征在于,所述源 SGSN 的寻址信息包括以下信息中的至少一个: 网络资源标识 NRI, 分组域用户 临时标识符 P-TMSI, 路由区域标识 RAI, 路由区域码 RAC, 全球核心网标 识, 和源 SGSN在核心网 CN的网际协议 IP地址。
9、 一种确定源通用分组无线业务服务支持节点 SGSN的方法, 其特征 在于, 包括:
获取源 SGSN的寻址信息;
通过非接入层 NAS消息将所述源 SGSN的寻址信息发送给移动交换中 心 MSC; 或者
通过直传消息或小区更新消息将所述源 SGSN的寻址信息发送给无线 网络控制器。
10、 根据权利要求 9所述的方法, 其特征在于, 在所述获取源 SGSN 的寻址信息之前, 还包括: 接收 MSC发送的发送源 SGSN的寻址信息的上报请求。
11、 根据权利要求 9或 10所述的方法, 其特征在于, 所述源 SGSN的 寻址信息包括以下信息中的至少一个: 网络资源标识 NRI, 分组域用户临 时标识符 P-TMSI,路由区域标识 RAI,路由区域码 RAC,全球核心网标识, 和源 SGSN在核心网 CN的网际协议 IP地址。
12、 一种确定源通用分组无线业务服务支持节点 SGSN的方法, 其特 征在于, 包括:
接收源 SGSN的寻址信息;
将所述源 SGSN的寻址信息发送给移动交换中心 MSC。
13、 根据权利要求 12所述的方法, 其特征在于, 所述获取源 SGSN的 寻址信息包括:
接收目标 SGSN在迁移过程中通过迁移请求消息携带的目标 SGSN的 寻址信息; 或者
接收源 SGSN通过公共标识或直传消息携带的源 SGSN的寻址信息; 或者
接收 UE通过直传消息携带的源 SGSN的寻址信息; 或者
接收 UE通过小区更新消息携带的源 SGSN的寻址信息。
14、 根据权利要求 12或 13所述的方法, 其特征在于, 所述将所述源 SGSN的选址信息发送给 MSC包括:
通过迁移请求消息或直传消息携带的源 SGSN 的寻址信息发送给 MSC。
15、 根据权利要求 12至 14中任一项所述的方法, 其特征在于, 所述 源 SGSN的寻址信息包括以下信息中的至少一个: 网络资源标识 NRI, 分 组域用户临时标识符 P-TMSI, 路由区域标识 RAI, 路由区域码 RAC, 全球 核心网标识, 和源 SGSN在核心网 CN的网际协议 IP地址。
16、 一种确定源通用分组无线业务服务支持节点 SGSN的装置, 其特 征在于, 包括:
第一获取单元, 用于通过用户设备 UE发送的非接入层 NAS消息获取 源 SGSN的寻址信息;
第一发送单元, 用于将所述源 SGSN的寻址信息发送给目标移动性管 理实体 MME或目标 SGSN,以便目标 MME或目标 SGSN根据所述源 SGSN 的寻址信息确定源 SGSN。
17、 根据权利要求 16所述的装置, 其特征在于, 还包括:
第一请求单元, 用于在通过 UE发送的 NAS消息获取源 SGSN的寻址 信息之前, 请求用户设备 UE发送所述源 SGSN的寻址信息。
18、 根据权利要求 16或 17所述的装置, 其特征在于, 所述源 SGSN 的寻址信息包括以下中的一个或多个: 网络资源标识 NRI, 分组域用户临 时标识符 P-TMSI,路由区域标识 RAI,路由区域码 RAC,全球核心网标识, 和源 SGSN在核心网 CN的网际协议 IP地址。
19、 一种确定源通用分组无线业务服务支持节点 SGSN的装置, 其特 征在于, 包括:
第二获取单元, 用于通过无线网络控制器获取源 SGSN的选址信息; 第一发送单元, 用于将所述源 SGSN的寻址信息发送给目标移动性管 理实体 MME或目标 SGSN,以便目标 MME或目标 SGSN根据所述源 SGSN 的寻址信息确定源 SGSN。
20、 根据权利要求 19所述的装置, 其特征在于, 所述第二获取单元进 一步用于接收无线网络控制器通过迁移请求消息或直传消息携带的源 SGSN的寻址信息。
21、 根据权利要求 19或 20所述的装置, 其特征在于, 所述源 SGSN 的寻址信息包括以下信息中的至少一个: 网络资源标识 NRI, 分组域用户 临时标识符 P-TMSI, 路由区域标识 RAI, 路由区域码 RAC, 全球核心网标 识, 和源 SGSN在核心网 CN的网际协议 IP地址。
22、 一种确定源通用分组无线业务服务支持节点 SGSN的装置, 其特 征在于, 包括:
第三获取单元, 用于获取源 SGSN的寻址信息;
第二发送单元, 用于通过非接入层 NAS消息将所述源 SGSN的寻址信 息发送给移动交换中心 MSC; 或者通过直传消息或小区更新消息将所述源 SGSN的寻址信息发送给无线网络控制器。
23、 根据权利要求 22所述的装置, 其特征在于, 还包括:
第一接收单元, 用于在获取源 SGSN的寻址信息之前, 接收 MSC发送 的发送源 SGSN的寻址信息的上报请求。
24、 根据权利要求 22或 23所述的装置, 其特征在于, 所述源 SGSN 的寻址信息包括以下信息中的至少一个: 网络资源标识 NRI, 分组域用户 临时标识符 P-TMSI, 路由区域标识 RAI, 路由区域码 RAC, 全球核心网标 识, 和源 SGSN在核心网 CN的网际协议 IP地址。
25、 一种确定源通用分组无线业务服务支持节点 SGSN的装置, 其特 征在于, 包括:
第二接收单元, 用于接收源 SGSN的寻址信息;
第三发送单元, 用于将所述源 SGSN的寻址信息发送给移动交换中心 MSC。
26、 根据权利要求 25所述的装置, 其特征在于, 所述第二接收单元进 一步用于:
接收目标 SGSN在迁移过程中通过迁移请求消息携带的目标 SGSN的 寻址信息; 或者
接收源 SGSN通过公共标识或直传消息携带的源 SGSN的寻址信息; 或者
接收用户设备 UE通过直传消息携带的源 SGSN的寻址信息; 或者 接收用户设备 UE通过小区更新消息携带的源 SGSN的寻址信息。
27、 根据权利要求 25或 26所述的装置, 其特征在于, 所述第三发送 单元进一步用于:
通过迁移请求消息或直传消息携带的源 SGSN 的寻址信息发送给 MSC。
28、 根据权利要求 25至 27中任一项所述的装置, 其特征在于, 所述源 SGSN的寻址信息包括以下信息中的至少一个: 网络资源标识 NRI, 分组域 用户临时标识符 P-TMSI, 路由区域标识 RAI, 路由区域码 RAC, 全球核心 网标识, 和源 SGSN在核心网 CN的网际协议 IP地址。
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| EP12869125.0A EP2819442B1 (en) | 2012-02-24 | 2012-11-15 | Method and device for determining source sgsn |
| US14/466,049 US9532277B2 (en) | 2012-02-24 | 2014-08-22 | Method and apparatus for determining source SGSN |
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| CN201210337796.0A CN103297948B (zh) | 2012-02-24 | 2012-09-13 | 确定源sgsn的方法和装置 |
| CN201210337796.0 | 2012-09-13 |
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| CN106255092B (zh) * | 2012-02-24 | 2020-06-26 | 华为技术有限公司 | 确定源sgsn的方法和装置 |
| CN105848132A (zh) * | 2015-01-15 | 2016-08-10 | 中兴通讯股份有限公司 | 一种实现位置更新的方法及移动管理单元 |
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| CN101083830A (zh) * | 2006-06-01 | 2007-12-05 | 华为技术有限公司 | 一种在不同核心网设备之间转移用户的方法 |
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| FI115374B (fi) * | 2003-08-26 | 2005-04-15 | Nokia Corp | Verkkoresurssien identifiointia pakettivälitteisille palveluille |
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| CN101212789B (zh) * | 2006-12-25 | 2011-07-13 | 中兴通讯股份有限公司 | 一种位置业务优化处理方法 |
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| Publication number | Publication date |
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| US9532277B2 (en) | 2016-12-27 |
| CN106255092A (zh) | 2016-12-21 |
| EP2819442A4 (en) | 2015-04-01 |
| EP2819442B1 (en) | 2017-05-03 |
| CN106255092B (zh) | 2020-06-26 |
| CN103297948B (zh) | 2016-12-21 |
| CN103297948A (zh) | 2013-09-11 |
| EP2819442A1 (en) | 2014-12-31 |
| US20140362827A1 (en) | 2014-12-11 |
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