CN104053200A - Method for UE to switch between UMTS and LTE system, and device - Google Patents
Method for UE to switch between UMTS and LTE system, and device Download PDFInfo
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Abstract
The invention provides a method for UE to switch between a UMTS and an LTE system. The method comprises: a source access network node sending a message to notify a source core network node that switching is needed, the message carrying indication information indicating that an enhanced switching process is needed; the source core network node sending a message to a destination core network node, the message comprising an identification of a service gateway of the UE and comprising information indicating that the destination core network node does not change the service gateway of the UE; and the destination core network node selecting a gateway corresponding to the gateway identification included in the message as the service gateway of the UE. The invention also provides several other methods for the UE to the switch between the UMTS and the LTE system. The invention further discloses an access network node device and a core network node device. According to the invention, the UE can carry out seamless switching between the UMTS and the LTE system, at the same time, the switching process can be simplified, the switching delay is reduced, the network efficiency is enhanced, and the user experience is improved.
Description
Technical field
The application relates to the bridging technology field between different operating system in wireless communication technology, the method and apparatus that particularly UE switches between UMTS system and LTE.
Background technology
Present mobile communication more and more trends towards providing for user the multimedia service of high rate data transmission, as shown in Figure 1, is the system architecture diagram of System Architecture Evolution (SAE).Wherein:
Subscriber equipment (UE) the 101st, is used for receiving the terminal equipment of data.Evolved universal terrestrial radio access network (E-UTRAN) the 102nd, Radio Access Network, comprising the macro base station (eNodeB/NodeB) that access of radio network interface is provided for UE, also referred to as wireless access network node (RAN node).Mobile management entity (MME) 103 is in charge of mobile context, session context and the security information of UE.Gateway (SGW) 104 mainly provides the function of user plane, and MME103 and SGW104 may be in Same Physical entities.Grouped data network gateway (PGW) 105 is responsible for the functions such as charging, Lawful Interception, also can be with SGW104 in Same Physical entity."Policy and Charging Rules Function entity (PCRF) 106 provides service quality (QoS) strategy and charging criterion.Universal grouping wireless business supporting node (SGSN) the 108th, provides the apparatus for network node of route for the transmission of data in universal mobile telecommunications system (UMTS).Home subscriber server (HSS) the 109th, the local ownership subsystem of UE, is responsible for the protection current location of subscriber equipment, the user profile such as packet data content of the address of service node, user security information, subscriber equipment.
Fig. 2 is the system architecture diagram of universal mobile telecommunications system (UMTS).Wherein:
101E-PDN in Fig. 2 (Extern Packet Data Network) is outside public data network, and various types of bag data are provided.Bag data are transferred to 103 gateway general packet radio service (being GPRS hereinafter to be referred as GPRS) support nodes (being GGSN hereinafter to be referred as Gateway GPRS Support Node) by external network by predetermined interface 102.GGSN receives after data, and data are sent to 105 Serving GPRS Support Nodes (hereinafter to be referred as SGSN) by interface 104.Between GGSN and SGSN, by tunnel, connect, interface 104 meets the agreement of gn interface, has the standard of this interface in TS25.413.SGSN receives after data, data need to be sent to the service wireless network controller (hereinafter to be referred as SRNC) of 107UE.RNC is also referred to as wireless access network node (RAN node).In WCDMA, between SGSN and RNC, by tunnel, connect, if also do not set up the tunnel of transfer of data, SGSN sends message by predetermined interface 106, set up the Deta bearer between SGSN and SRNC, if set up tunnel, SGSN sends to SRNC by data by interface 106.Interface 106 meets the agreement of Iu interface, and the agreement of Iu interface comprises the agreement RNSAP agreement of control plane and the agreement of datum plane.RNSAP agreement comprises the signaling process of setting up datum plane, and datum plane has been stipulated the form in the data of Iu interface transmission.107SRNC receives after data, need to send the data to 109Node B.If the bearer context for data transmission between SRNC and NodeB is not also set up, SRNC sends message by predetermined interface 108, the Deta bearer between foundation and base station, and transmission message is set up the wireless link between base station and UE to UE.Establish after Deta bearer, SRNC is responsible for packing the data to predetermined form, by interface 108, sends to base station 109, and interface 108 is Iub interface, and the standard of Iub interface comprises the agreement NBAP agreement of control plane and the agreement of datum plane.NBAP agreement has comprised the signaling process of setting up Iub interface Deta bearer, and the agreement of datum plane has been stipulated the form of the data of Iub interface transmission.By data, the wireless link by air interface sends to 110UE in 109 base stations.Between two RNC, also can have interface, if interface exists, this interface is followed the agreement of RNSAP.When community below UE moves to another RNC, SRNC is originally that a new Deta bearer link is set up in the community below new RNC, and this RNC is called as Drift Radio Network Controller (being called for short DRNC).Data send to DRNC by SRNC, then by DRNC, send to base station.SRNC originally also can initiate reset process, the function of SRNC is transferred to DRNC upper, and after reset process, DRNC just becomes the SRNC of UE.
In a geographic area, UMTS and LTE system can exist simultaneously, user in connection mode moves between different connecting systems, is switched to the community of another connecting system by the community of a connecting system, completes handoff procedure at present by reconfiguration course.The message number that current reconfiguration course relates to is many, the time needing is long, especially the initial stage of disposing at LTE, because LTE covers limited, LTE cell deployment becomes Hot Spot, basic covering provided by UMTS system, UE may LTE community and UMTS community between frequently switch.Because the interoperability process of UMTS and LTE is complicated, retardation ratio is larger, can cause network efficiency low, the problems such as poor user experience.
In order to adapt to the deployment of multi-access systems and the interoperability between different access systems, need to improve current switching or reconfiguration course, to reduce the delay of handoff procedure, improve the promptness of handoff procedure.The application reshuffles or handoff procedure improves current, proposes new handoff procedure to reach the above object.
Summary of the invention
The method and apparatus that the application provides several UE to switch between UMTS system and LTE system, simultaneous time, to simplify handoff procedure in UMTS and LTE system, reduces the delay of switching.
The method that the disclosed a kind of UE of the application switches between UMTS system and LTE system, comprising:
Source access network node sends message informing source core net node and need to switch;
Source core net node sends message to object core net node, comprises the sign of the gateway of UE in message, and comprises the information that indication object core net node does not change the gateway of UE;
Described object core net node selects the corresponding gateway of gateway identification that comprises in described message as the gateway of UE.
Preferably, source access network node further carries the indication information of the handoff procedure that expression need to strengthen in the message that sends to source core net node.
Preferably, when source core net node obtains the indication information of the handoff procedure that described expression need to strengthen from the message that source access network node sends, source core net node comprises the information that described indication object core net node does not change the gateway of UE in the message that sends to object core net node.
The method that the disclosed a kind of UE of the application switches between UMTS system and LTE system, comprising:
The service access network node of UE sends to the current positional information of UE the service core net node of UE;
When UE enters into specific region, the service core net node of UE sends to the contextual information of UE the core net node of the object connecting system that UE may be switched to.
Preferably, the positional information that the corresponding relation of the core net node of the object connecting system that the service core net node of UE may be switched to according to pre-configured specific region and UE and UE are current, determines the core net node of the object connecting system that UE may be switched to.
The method that the disclosed a kind of UE of the application switches between UMTS system and LTE system, comprising::
The source access network node of UE sends handover request message to object access network node;
Source access network node sends message to source core net node, and indication source core net node sends to object core net node by the contextual information of UE;
Source core net node sends to object core net node by the contextual information of UE;
Source access network node sends switching command message to UE.
Preferably, source access network node sends to the sign that comprises UE in the message of source core net node and the sign of object access network node, or the sign of the sign that comprises UE and object core net node;
Source core net node is determined corresponding object core net node according to the sign of the sign of described object access network node or object core net node.
The method that the disclosed a kind of UE of the application switches between UMTS system and LTE system, comprising:
The source access network node of UE sends handover request message to object access network node;
Object access network node sends switching response message to source access network node;
Object access network node sends message to object core net node, and indication object core net node is to the contextual information of the source core net node request UE of UE;
Object core net node sends message to source core net node, and request obtains the contextual information of UE;
Source core net node by the contextual information of UE to object core net node.
Preferably, object access network node sends to the sign that comprises UE in the message of object core net node and the sign of source access network node, or the sign of the sign that comprises UE and source core net node;
Object core net node is determined corresponding source core net node according to the sign of the sign of described source access network node or source core net node.
The disclosed a kind of access network node equipment of the application, comprising: handover module and indicating module; Wherein:
Described access network node equipment as switch source access network node time, described handover module is used for sending message informing source core net node and need to switches;
Described indicating module is for increasing the indication information that represents the handoff procedure that need to strengthen in described message.
Preferably, this access network node further comprises: location information management module;
Described location information management module is for during as the service access network node of UE, sending to the current positional information of described UE the service core net node of UE at described access network node equipment.
Preferably, described access network node equipment as switch source access network node time, described handover module is also for sending handover request message to object access network node, and sending message to source core net node, indication source core net node sends to object core net node by the contextual information of UE; Wherein, send to the sign that comprises UE in the message of source core net node and the sign of object access network node, or the sign of the sign that comprises UE and object core net node.
Preferably, described access network node equipment as switch object access network node time, the handover request message that described handover module also sends for the source access network node receiving switching after source access network node returns to switching response message, to object core net node, send message, indication object core net node is to the contextual information of the source core net node request UE of UE; Wherein, send to the sign that comprises UE in the message of object core net node and the sign of source access network node, or the sign of the sign that comprises UE and source core net node.
The disclosed a kind of core net node equipment of the application, comprising: handover module and indicating module; Wherein:
Described core net node equipment as switch source core net node time, described handover module, for from source access network node receipt message, is known and need to be switched;
Described indicating module is used for carrying the sign of the gateway of UE in the message sending to object core net node, and comprises the information that indication object core net node does not change the gateway of UE.
Preferably, described core net node further comprises: UE information management module:
Described handover module obtains the current positional information of UE from be received from the message of source access network node;
Described UE information management module is for corresponding relation and the current positional information of UE of the core net node of the object connecting system that may be switched to according to pre-configured specific region and UE, determine the core net node of the object connecting system that UE may be switched to, and the contextual information of UE is sent to the core net node of the object connecting system that UE may be switched to.
Preferably, described core net node equipment as switch source core net node time, described UE information management module also, for according to the indication of source access network node, sends to object core net node by the contextual information of UE.
Preferably, described core net node equipment as switch object core net node time, described UE information management module is also for according to the indication of object access network node, to the contextual information of source core net node request UE.
As seen from the above technical solution, the method that the UE that the application provides switches between UMTS system and LTE system, makes UE between UMTS system and LTE system, to carry out seamless switching, simplify handoff procedure simultaneously, reduce the delay of switching, improve network efficiency, and improve user's experience.
Accompanying drawing explanation
The existing SAE system architecture diagram of Fig. 1;
The existing UMTS system architecture diagram of Fig. 2;
Fig. 3 the application carries out the schematic diagram of improved first method to existing handoff procedure;
Fig. 4 is that the embodiment of the present application one UE is switched to the process schematic diagram of UMTS system from LTE system;
Fig. 5 is that the application carries out the schematic diagram of improved second method to existing handoff procedure;
Fig. 6 is that the embodiment of the present application two UE are switched to the process schematic diagram of UMTS system from LTE system;
Fig. 7 is that the application carries out the schematic diagram of improved the third method to existing handoff procedure;
Fig. 8 is that the embodiment of the present application three UE are switched to the process schematic diagram of UMTS system from LTE system;
Fig. 9 is that the embodiment of the present application four UE are switched to the process schematic diagram of UMTS system from LTE system;
Figure 10 is the composition structural representation of the better access network node equipment of the application one;
Figure 11 is the composition structural representation of the better core net node equipment of the application one.
Embodiment
For making the application's object, technical scheme and advantage clearer, referring to the accompanying drawing embodiment that develops simultaneously, the application is described in further detail.
Fig. 3 is that the application carries out the schematic diagram of improved first method to existing handoff procedure.In this area, conventionally improvement is called to enhancing, in following description, will uses and strengthen this term.In existing handoff procedure, object core net node is received after the contextual information (UE context) of the UE that source core net node forwards, can select a new gateway for UE, then object core net node sends message to new gateway, on new gateway, set up the contextual information of UE, in addition, object core net node also needs to send message to new gateway and old gateway, carries out the foundation of data retransmission link.The contextual information of UE refer to be kept on certain node with the relevant information of UE, the ability of UE for example, the information of the radio bearer of UE etc.
The main thought of the application's first method is: the new gateway that makes object core net node select is identical with source gateway, thereby removes said process from.The concrete steps of first method shown in Fig. 3 are as follows:
Step 301: source RAN node sends message informing source core net node, need to switch, for example: can send to switch to source core net node needs message.
Source RAN node determines to switch, and this decision can be with reference to the measurement report of UE, finds community that quality meets the demands as the object community of switching.Switch and need can further carry indication information, the handoff procedure that expression need to strengthen in message.The scene of the handoff procedure that need to strengthen can be: when source RAN node finds that UE has carried out the switching between UMTS and LTE frequently, or when handoff procedure that UE need to strengthen.
Step 302: source core net node sends message (for example: can send and forward UE context message) to object core net node, the sign that comprises the gateway of UE in message, and comprise indication information, indication object core net node does not change the gateway of UE, that is: object core net node, not for UE selects new gateway, continues to use old gateway.
When source RAN node carries the indication information of the handoff procedure that expression need to strengthen in the message that step 301 sends, in this step, source core net node can comprise the indication information that indication object core net node does not change the gateway of UE in the message that sends to object core net node; If do not carry above-mentioned indication information in the message that source RAN node sends in step 301, source core net node also can be decided in its sole discretion and in the message that sends to object core net node, carry the indication information that indication object core net node does not change the gateway of UE.
Step 303: object core net node sends handover request message to object RAN node, and message is identical with current handover request message.Handoff procedure is afterwards identical with current handoff procedure, does not repeat them here.
The first method of switching between UMTS and LTE system below by a pair of the application UE of embodiment is further elaborated.
Embodiment mono-:
The present embodiment has been described UE and from LTE system, has been switched to the process of UMTS system.UMTS is similar to handoff procedure and the embodiment mono-of LTE, just correspondingly source node is changed into the node of UMTS, and destination node changes the node of LTE into, and correspondingly changes message name.Referring to Fig. 4, with LTE to the switching of UMTS as an example, do not repeat UMTS to the handoff procedure of LTE.Method shown in Fig. 4 can comprise the following steps:
Step 401: suppose that source eNB determines to carry out LTE to the switching of UMTS, and object community is Yi Ge community below RNC, so, source eNB sends to switch needs message to source MME, asks the resource on object core net and object RNC.In message, comprise the sign of object RNC and the transparent vessel that object is arrived in source, in message, can also comprise indication information, the handoff procedure that indication core net need to strengthen.Preferably, this indication information can be set in following several situations:
One: source eNB finds that UE has carried out intersystem handover frequently, and this discovery can obtain by the historical data of carrying in existing message.
Two: for the higher user of priority, adopt the handoff procedure strengthening.
Three: under special deployment, for example LTE has been deployed to Hot Spot, UMTS community is basic coverage cell, belongs to Yi Ge operator, and operator has configured the handoff procedure strengthening in this region.
Above three kinds of situations just illustrate, and can have other more situation applicable in reality.
Step 402: source core net MME node knows that by the sign of object RNC this switching is the switching between different system, and finds object SGSN by the sign of object RNC, MME sends and forwards the request of replacement to object SGSN.In message, comprise the permanent identification IMSI of UE and the contextual information of UE, in the contextual information of UE, comprise the information relevant with UE being kept on the core net MME of source, such as: the information of enciphered message, mobile management, the ability information of UE etc.In message, also comprise source to the transparent vessel of object, and the sign that comprises old gateway, and in message, also comprising indication information, indication object SGSN continues to use old gateway.This indication information can be arranged to:
Do not change the indication of gateway, comprise this indication, represent that object core net node is for UE selects new gateway, continue to use old gateway.Or this indication is arranged to ' 1 ', represent that object core net node is for UE selects new gateway, continue to use old gateway; This indication is arranged to ' 0 ', and expression object core net node can be selected new gateway for UE.
The indication of the handoff procedure strengthening, comprises this indication, represents that object core net node is for UE selects new gateway, continues to use old gateway.Or this indication is arranged to ' 1 ', what expression was carried out is the handoff procedure strengthening, and core net node is not selected new gateway for UE, continues to use old gateway; This indication is arranged to ' 0 ', and what expression was carried out is traditional handoff procedure, and object core net node can be selected new gateway for UE.
Step 403: object SGSN sends reconfiguration request message to object RNC, and request object RNC sets up resource.In message, comprise the sign of UE, the RAB information of encrypting relevant information, foundation and source to the transparent vessel of object.The RAB packets of information of setting up is containing configuration parameter and the transport layer address of RAB sign, RAB.The switch step starting from step 403 with existing protocol, define identical, so simple declaration.
Step 404: object RNC Resources allocation, and send reconfiguration response message to SGSN.In message, comprise the information of the RAB being successfully established and object to the transparent vessel in source.
Step 405: object SGSN send to forward reconfiguration response message to source MME, comprises information that RAB sets up and object to the transparent vessel in source in message.
Step 406: source MME sends switching command to source eNB.In message, comprise object to the transparent vessel in source.
Step 407: source eNB sends switching command to UE, comprises the configuration information of RAB in message.
Step 408:UE configures new RAB parameter, synchronizes with object community, then sends handoff completion message to object RNC.
Step 409: object RNC sends and has reshuffled message to object SGSN.This message is used for notifying core net, and object RNC has completed switching.Afterwards, object SGSN can receive data from object RNC.
Step 410: object SGSN knows that UE has been switched to object RNC, and object SGSN sends to forward and reshuffled Indication message to source MME.
Step 411: source MME sends acknowledge message to object SGSN.Afterwards, source MME starts a clock, and after clock is overtime, source MME initiates dispose procedure, discharges the information that is kept at the UE on the eNB of source.
Step 412: object SGSN sends and revises carrying request to gateway, and the user plane that object SGSN is distributed and the address information of control plane send to gateway, IP address and Tunnel Identifier that address information comprises object SGSN.
Step 413: it is upper that gateway is switched to object SGSN by user plane, gateway sends revises bearing response message to object SGSN.
Step 414: after clock that step 411 starts is overtime, source MME sends UE information releasing request to source eNB.
Step 415: source eNB sends acknowledge message to source MME, and discharges UE information.
So far, the process of embodiment mono-finishes.
Fig. 5 is that the application carries out the schematic diagram of improved second method to existing handoff procedure.In existing handoff procedure, need to set up at object core net and object wireless access system the contextual information of UE, this process of establishing is all set up in handoff procedure, if by core net UE contextual information process of establishing in advance, before handoff procedure, set up, so, in handoff procedure, can only set up the UE contextual information of object wireless access system, thereby can save the message in switching, reduce and postpone.The concrete steps of second method shown in Fig. 5 are as follows:
Step 501: suppose that UE is connected to RAN node A at present upper, for example: suppose that UE has entered into connection mode by registration process, area update procedures or service request procedure.The serving RAN node A of UE sends message to the serving node B (being the service core net node of UE) of its core net, carries the current positional information of UE in message, and this positional information can be cell ID, Base Station Identification or area identification.
Step 502: serving node B sends the core net node of the object connecting system that message may be switched to UE, carries the contextual information of UE in message.Can in serving node B, configure in advance the corresponding relation of the object connecting system that specific region and UE may be switched to, because serving node B has been known the residing position of current UE from the serving RAN node of UE, can judge accordingly that UE may move in other connecting system, in conjunction with pre-configured corresponding relation, can determine which core net node may be the destination node of switching, serving node B sends message to these possible core net nodes, and the contextual information of UE is configured on these core net nodes in advance.Here, also can be in advance in serving node B the corresponding relation of the position of configuration UE and the object core net node that may be switched to, thereby can directly determine the corresponding object core net node that may be switched to according to the position of UE.
Step 503: the core net node of the connecting system that described UE may be switched to sends corresponding message (corresponding to the response message of message described in step 502 etc.) to serving node B.
Step 504: afterwards, serving RAN node A determines to initiate handoff procedure (in handoff procedure, serving RAN node is also referred to as source RAN node), handoff procedure can adopt RAN node A directly to send message to the mode of object RAN node, the resource that object RAN node configuration UE is used in object community, by corresponding message, send to serving RAN node A, serving RAN node A sends to UE by this resource, UE is synchronizeed with object community, and the node to object RAN has been switched in transmission, object RAN node sends message to the service node of object core net, the service node of object core net sends response message to serving node B.Concrete process is described in implementing two.
Embodiment bis-:
The present embodiment has been described UE and from LTE system, has been switched to the process of UMTS system.UMTS is similar to handoff procedure and the embodiment bis-of LTE, just correspondingly source node is changed into the node of UMTS, and destination node changes the node of LTE into, and correspondingly changes message name.Referring to Fig. 6, with LTE to the switching of UMTS as an example, do not repeat UMTS to the handoff procedure of LTE.Method shown in Fig. 6 can comprise the following steps:
Step 601:UE is linked into the community below eNB, and the RRC that sets up Yu Gai community connects, and then eNB sends upstream message to MME, carries the sign of UE and the positional information of UE in upstream message.The positional information of UE can be the sign of Serving cell of UE or the area identification at the eNB of UE sign or UE place.
Step 602:MME sends the object SGSN that message may be switched to UE, carries the contextual information of UE in message.The information of the object SGSN that MME may be switched to according to the positional information of UE and pre-configured UE, sends UE context to the object SGSN that may be switched to, and makes the contextual information of the upper UE of preservation of these SGSN.
In the present embodiment, be to take object SGSN that MME may be switched to UE to send " UE information request message " and describe as example.
Step 603: the SGSN that receives message sends response message to MME, has acknowledged receipt of the contextual information of UE.
Step 604: if the contextual information of the UE on MME changes, MME sends the object SGSN that updating message (for example: UE information is revised message) may be switched to UE, and message is carried the contextual information of the UE of renewal.
Step 605: the SGSN that receives message sends response message to MME, has acknowledged receipt of the contextual information of UE.
Step 606: suppose that source eNB determines UE to carry out LTE to the switching of UMTS, object community is Yi Ge community below RNC, and now, source eNB sends handover request message to object RNC, asks RNC to set up the contextual information of UE, and is UE Resources allocation.In message, comprise the sign of object community and the beared information of UE, the Qos information that the beared information of UE comprises the sign of carrying, carrying and the data tunnel information of carrying.
Step 607: object RNC sends switching response message to source eNB, comprises the beared information that is successfully established and object to the transparent vessel in source in message.
Step 608: source eNB sends switching command to UE, comprises the configuration information of radio bearer in message.
Step 609:UE configures new RAB parameter, synchronizes with object community, then sends handoff completion message to object RNC.
Step 610: object RNC sends handoff completion message to object SGSN.This message is used for notifying core net, and object RNC has completed switching, and afterwards, object SGSN can receive data from object RNC.
It is shown in Fig. 6, to have switched confirmation to object RNC(that step 611: object SGSN sends response message).
Step 612: object SGSN sends handoff completion message to source MME, and notification source MME switching completes.
Step 613: source MME sends and switched acknowledge message to object SGSN.Afterwards, source MME starts a clock, and after clock is overtime, source MME initiates dispose procedure, discharges the information that is kept at the UE on the eNB of source.
Step 614: object SGSN sends and revises carrying request to gateway, and the user plane that object SGSN is distributed and the address information of control plane send to gateway, IP address and Tunnel Identifier that address information comprises object SGSN.
Step 615: it is upper that gateway is switched to object SGSN by user plane, gateway sends revises bearing response message to object SGSN.
Step 616: after clock that step 613 starts is overtime, source MME sends UE information releasing request to source eNB.
Step 617: source eNB sends acknowledge message to MME, and discharges UE information.
So far, the process of embodiment bis-finishes.
Fig. 7 is that the application carries out the schematic diagram of improved the third method to existing handoff procedure. in existing handoff procedure, need to set up at object core net and object RAN node the contextual information of UE, this process of establishing is all set up in handoff procedure, if object core net UE contextual information process of establishing and RAN node process of establishing are carried out, can reduce delay simultaneously.Shown in Fig. 7, the third method specifically comprises the steps:
Step 701: source RAN node sends handover request message to object RAN node.
Step 702: source RAN node sends message to source core net node, indication source core net node sends to object core net node by the contextual information of UE; Or object RAN node sends message to object core net node, request object core net node is to source core net node request UE contextual information.
Step 703: source RAN node sends switching command message to UE.After this, carry out normal handoff procedure.
Below by embodiment tri-and embodiment tetra-, the specific implementation process of the third method of DETAILED DESCRIPTION The present application.
Embodiment tri-:
The present embodiment has been described UE and from LTE system, has been switched to the process of UMTS system.In this handoff procedure, by source eNB, send message to object RNC, source eNB without by the time sending message to after UE, that is: before transmission message is to UE, just sends message to source MME, allows source MME that the contextual information of UE is transmitted to object SGSN.Method shown in Fig. 8 can comprise the following steps:
Step 801: source eNB determines to carry out LTE to the switching of UMTS, object community is Yi Ge community below RNC, now, source eNB sends handover request message to object RNC, asks RNC to set up the contextual information of UE, and is UE Resources allocation.In message, comprise the sign of object community and the beared information of UE, the Qos information that the beared information of UE comprises the sign of carrying, carrying and the data tunnel information of carrying.
Step 802: object RNC sends switching response message to source eNB, comprises the beared information that is successfully established and object to the transparent vessel in source in information.
Step 803: source eNB sends message to source MME, message indication source MME sends to object core net node by the contextual information of UE, comprises the sign of UE and the sign of object RNC in message, or the sign of the sign that comprises UE and object SGSN.
Step 804: source MME sends message to object SGSN, comprises the contextual information of UE in message.Source MME can find corresponding SGSN node by the sign of object RNC or the sign of object SGSN comprising in step 803 message.
Step 805: object SGSN sends response message to source MME, has acknowledged receipt of the contextual information of UE.
Step 807: source eNB sends switching command to UE, the configuration information that message comprises radio bearer.
Step 808:UE configures new RAB parameter, synchronizes with object community, then sends handoff completion message to object RNC.
Step 809: object RNC sends handoff completion message to object SGSN.This message is used for notifying core net, and object RNC has completed switching, and afterwards, object SGSN can receive data from object RNC.
It is shown in Fig. 8, to have switched confirmation to object RNC(that step 810: object SGSN sends response message).
Step 811: object SGSN sends handoff completion message to source MME, and notification source MME switching completes.
Step 812: source MME sends and switched acknowledge message to SGSN.Afterwards, source MME starts a clock, and after clock is overtime, source MME initiates dispose procedure, discharges the information that is kept at the UE on eNB.
Step 813: object SGSN sends and revises carrying request to gateway, and the user plane that object SGSN is distributed and the address information of control plane send to gateway, IP address and Tunnel Identifier that address information comprises object SGSN.
Step 814: it is upper that gateway is switched to object SGSN by user plane, gateway sends revises bearing response message to object SGSN.
Step 815: after clock that step 812 starts is overtime, source MME sends UE information releasing request to source eNB.
Step 816: source eNB sends acknowledge message to source MME, and discharge the contextual information of UE.
So far, the process of embodiment tri-finishes.
Embodiment tetra-:
The present embodiment has been described UE and from LTE system, has been switched to the process of UMTS system.In this handoff procedure, by source eNB, send message to object RNC, after object RNC receives the handover request message of source eNB transmission, without the handoff completion message of UE transmission by the time, object RNC just sends message to object SGSN, allows object SGSN to source MME, ask the contextual information of UE.Method shown in Fig. 9 can comprise the following steps:
Step 901: source eNB determines to carry out LTE to the switching of UMTS, object community is Yi Ge community below RNC, now, source eNB sends handover request message to object RNC, asks object RNC to set up the contextual information of UE, and is UE Resources allocation.In message, comprise the sign of object community and the beared information of UE, the Qos information that the beared information of UE comprises the sign of carrying, carrying and the data tunnel information of carrying.
Step 902: object RNC sends handoff response information to source eNB, and packets of information is the transparent vessel to source containing the beared information being successfully established and object.
Step 903: object RNC sends message to object SGSN, message indication object SGSN need to obtain from source core net node the contextual information of UE, in message, comprise the sign of UE and the sign of source RAN node, or the sign of the sign that comprises UE and source core net node.
Step 904: object SGSN sends message to source core net node MME, comprises the sign of UE in message.Object SGSN can find corresponding source MME node by the sign of source RAN node or the sign of source core net node comprising in step 903 message.
Step 905: source MME sends response message to object SGSN, carries the contextual information of UE in message.
Step 906: object SGSN sends message to object RNC, and notice object RNC core net has obtained the contextual information of UE.
Step 907: source eNB sends switching command to UE, comprises the configuration information of radio bearer in message.
Step 908:UE configures new RAB parameter, synchronizes with object community, then sends handoff completion message to object RNC.
Step 909: object RNC sends handoff completion message to object SGSN.This message is used for notifying core net, and object RNC has completed switching, and afterwards, object SGSN can receive data from object RNC.
Step 910: object SGSN sends response message to RNC.
Step 911: object SGSN sends message to source MME, and notification source MME switching completes.
Step 912: source MME sends acknowledge message to object SGSN.Afterwards, source MME starts a clock, and after clock is overtime, source MME initiates dispose procedure, discharges the information that is kept at the UE on the eNB of source.
Step 913: object SGSN sends and revises carrying request to gateway, and the user plane that SGSN is distributed and the address information of control plane send to gateway, IP address and Tunnel Identifier that address information comprises SGSN.
Step 914: it is upper that gateway is switched to object SGSN by user plane, gateway sends revises bearing response message to object SGSN.
Step 915: after clock that step 912 starts is overtime, source MME sends UE information releasing request to source eNB.
Step 916: source eNB sends acknowledge message to MME, and discharges UE information.
So far, the process of embodiment tetra-finishes.
The method above the application being provided has been described in detail.Corresponding to said method, the application also provides corresponding access network node equipment and core net node equipment, the composition structure of the application's access network node equipment and core net node equipment is carried out to brief description below.
Figure 10 is the composition structural representation of the better access network node equipment of the application one.This access network node equipment comprises: handover module and indicating module; Wherein:
Described access network node equipment as switch source access network node time, described handover module is used for sending message informing source core net node and need to switches;
Described indicating module is for increasing the indication information that represents the handoff procedure that need to strengthen in described message.
In the equipment of access network node shown in Figure 10, can further include: location information management module;
Described location information management module is for during as the service access network node of UE, sending to the current positional information of described UE the service core net node of UE at described access network node equipment.
When the equipment of access network node shown in Figure 10 as switch source access network node time, described handover module is also for sending handover request message to object access network node, and sending message to source core net node, indication source core net node sends to object core net node by the contextual information of UE; Wherein, send to the sign that comprises UE in the message of source core net node and the sign of object access network node, or the sign of the sign that comprises UE and object core net node.
When the equipment of access network node shown in Figure 10 as switch object access network node time, the handover request message that described handover module also sends for the source access network node receiving switching after source access network node returns to switching response message, to object core net node, send message, indication object core net node is to the contextual information of the source core net node request UE of UE; Wherein, send to the sign that comprises UE in the message of object core net node and the sign of source access network node, or the sign of the sign that comprises UE and source core net node.
Figure 11 is the composition structural representation of the better core net node equipment of the application one.This core net node equipment comprises: handover module and indicating module; Wherein:
Described core net node equipment as switch source core net node time, described handover module, for from source access network node receipt message, is known and need to be switched;
Described indicating module is used for carrying the sign of the gateway of UE in the message sending to object core net node, and comprises the information that indication object core net node does not change the gateway of UE.
Preferably, in described core net node, may further include: UE information management module:
Described handover module obtains the current positional information of UE from be received from the message of source access network node;
Described UE information management module is for corresponding relation and the current positional information of UE of the core net node of the object connecting system that may be switched to according to pre-configured specific region and UE, determine the core net node of the object connecting system that UE may be switched to, and the contextual information of UE is sent to the core net node of the object connecting system that UE may be switched to.
Preferably, when the equipment of core net node shown in Figure 11 as switch source core net node time, described UE information management module also, for according to the indication of source access network node, sends to object core net node by the contextual information of UE.
Preferably, when the equipment of core net node shown in Figure 11 as switch object core net node time, described UE information management module is also for according to the indication of object access network node, to the contextual information of source core net node request UE.
The foregoing is only the application's preferred embodiment, not in order to limit the application, all within the application's spirit and principle, any modification of making, be equal to replacement, improvement etc., within all should being included in the scope of the application's protection.
Claims (17)
1. the method that UE switches between UMTS system and LTE system, is characterized in that, comprising:
Source access network node sends message informing source core net node and need to switch;
Source core net node sends message to object core net node, comprises the sign of the gateway of UE in message, and comprises the information that indication object core net node does not change the gateway of UE;
Described object core net node selects the corresponding gateway of gateway identification that comprises in described message as the gateway of UE.
2. method according to claim 1, is characterized in that:
Source access network node further carries the indication information of the handoff procedure that expression need to strengthen in the message that sends to source core net node.
3. method according to claim 2, is characterized in that:
When source core net node obtains the indication information of the handoff procedure that described expression need to strengthen from the message that source access network node sends, source core net node comprises the information that described indication object core net node does not change the gateway of UE in the message that sends to object core net node.
4. the method that UE switches between UMTS system and LTE system, is characterized in that, comprising:
The service access network node of UE sends to the current positional information of UE the service core net node of UE;
When UE enters into specific region, the service core net node of UE sends to the contextual information of UE the core net node of the object connecting system that UE may be switched to.
5. method according to claim 4, is characterized in that:
The positional information that the corresponding relation of the core net node of the object connecting system that the service core net node of UE may be switched to according to pre-configured specific region and UE and UE are current, determines the core net node of the object connecting system that UE may be switched to.
6. the method that UE switches between UMTS system and LTE system, is characterized in that, comprising::
The source access network node of UE sends handover request message to object access network node;
Source access network node sends message to source core net node, and indication source core net node sends to object core net node by the contextual information of UE;
Source core net node sends to object core net node by the contextual information of UE;
Source access network node sends switching command message to UE.
7. method according to claim 6, is characterized in that:
Source access network node sends to the sign that comprises UE in the message of source core net node and the sign of object access network node, or the sign of the sign that comprises UE and object core net node;
Source core net node is determined corresponding object core net node according to the sign of the sign of described object access network node or object core net node.
8. the method that UE switches between UMTS system and LTE system, is characterized in that, comprising:
The source access network node of UE sends handover request message to object access network node;
Object access network node sends switching response message to source access network node;
Object access network node sends message to object core net node, and indication object core net node is to the contextual information of the source core net node request UE of UE;
Object core net node sends message to source core net node, and request obtains the contextual information of UE;
Source core net node by the contextual information of UE to object core net node.
9. method according to claim 6, is characterized in that:
Object access network node sends to the sign that comprises UE in the message of object core net node and the sign of source access network node, or the sign of the sign that comprises UE and source core net node;
Object core net node is determined corresponding source core net node according to the sign of the sign of described source access network node or source core net node.
10. an access network node equipment, is characterized in that, comprising: handover module and indicating module; Wherein:
Described access network node equipment as switch source access network node time, described handover module is used for sending message informing source core net node and need to switches;
Described indicating module is for increasing the indication information that represents the handoff procedure that need to strengthen in described message.
11. access network node equipment according to claim 10, is characterized in that, this access network node further comprises: location information management module;
Described location information management module is for during as the service access network node of UE, sending to the current positional information of described UE the service core net node of UE at described access network node equipment.
12. access network node equipment according to claim 10, is characterized in that:
Described access network node equipment as switch source access network node time, described handover module is also for sending handover request message to object access network node, and sending message to source core net node, indication source core net node sends to object core net node by the contextual information of UE; Wherein, send to the sign that comprises UE in the message of source core net node and the sign of object access network node, or the sign of the sign that comprises UE and object core net node.
13. access network node equipment according to claim 10, is characterized in that:
Described access network node equipment as switch object access network node time, the handover request message that described handover module also sends for the source access network node receiving switching after source access network node returns to switching response message, to object core net node, send message, indication object core net node is to the contextual information of the source core net node request UE of UE; Wherein, send to the sign that comprises UE in the message of object core net node and the sign of source access network node, or the sign of the sign that comprises UE and source core net node.
14. 1 kinds of core net node equipment, is characterized in that, comprising: handover module and indicating module; Wherein:
Described core net node equipment as switch source core net node time, described handover module, for from source access network node receipt message, is known and need to be switched;
Described indicating module is used for carrying the sign of the gateway of UE in the message sending to object core net node, and comprises the information that indication object core net node does not change the gateway of UE.
15. core net node equipment according to claim 14, is characterized in that, described core net node further comprises: UE information management module:
Described handover module obtains the current positional information of UE from be received from the message of source access network node;
Described UE information management module is for corresponding relation and the current positional information of UE of the core net node of the object connecting system that may be switched to according to pre-configured specific region and UE, determine the core net node of the object connecting system that UE may be switched to, and the contextual information of UE is sent to the core net node of the object connecting system that UE may be switched to.
16. core net node equipment according to claim 15, is characterized in that:
Described core net node equipment as switch source core net node time, described UE information management module also, for according to the indication of source access network node, sends to object core net node by the contextual information of UE.
17. core net node equipment according to claim 15, is characterized in that:
Described core net node equipment as switch object core net node time, described UE information management module is also for according to the indication of object access network node, to the contextual information of source core net node request UE.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310082941.XA CN104053200A (en) | 2013-03-15 | 2013-03-15 | Method for UE to switch between UMTS and LTE system, and device |
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| CN201310082941.XA CN104053200A (en) | 2013-03-15 | 2013-03-15 | Method for UE to switch between UMTS and LTE system, and device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105992293A (en) * | 2015-02-09 | 2016-10-05 | 电信科学技术研究院 | Network switching method and device |
| CN107708160A (en) * | 2016-08-09 | 2018-02-16 | 中兴通讯股份有限公司 | A kind of detection method and device switched too early |
| CN109392034A (en) * | 2017-08-09 | 2019-02-26 | 维沃移动通信有限公司 | A kind of motion management method, user equipment and network side equipment |
| CN112740758A (en) * | 2018-10-09 | 2021-04-30 | 联想(北京)有限公司 | Handover request with network information |
| CN113507736A (en) * | 2016-08-10 | 2021-10-15 | 日本电气株式会社 | Wireless access network node, wireless terminal, core network node and method thereof |
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2013
- 2013-03-15 CN CN201310082941.XA patent/CN104053200A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105992293A (en) * | 2015-02-09 | 2016-10-05 | 电信科学技术研究院 | Network switching method and device |
| CN105992293B (en) * | 2015-02-09 | 2020-01-07 | 电信科学技术研究院 | Method and equipment for switching between networks |
| CN107708160A (en) * | 2016-08-09 | 2018-02-16 | 中兴通讯股份有限公司 | A kind of detection method and device switched too early |
| CN113507736A (en) * | 2016-08-10 | 2021-10-15 | 日本电气株式会社 | Wireless access network node, wireless terminal, core network node and method thereof |
| CN109392034A (en) * | 2017-08-09 | 2019-02-26 | 维沃移动通信有限公司 | A kind of motion management method, user equipment and network side equipment |
| CN109392034B (en) * | 2017-08-09 | 2020-09-08 | 维沃移动通信有限公司 | Mobility management method, user equipment and network side equipment |
| CN112740758A (en) * | 2018-10-09 | 2021-04-30 | 联想(北京)有限公司 | Handover request with network information |
| CN112740758B (en) * | 2018-10-09 | 2022-11-15 | 联想(北京)有限公司 | Handover request with network information |
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Application publication date: 20140917 |