CN102656921A - Method and device for service switch - Google Patents

Method and device for service switch Download PDF

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Publication number
CN102656921A
CN102656921A CN2010800579090A CN201080057909A CN102656921A CN 102656921 A CN102656921 A CN 102656921A CN 2010800579090 A CN2010800579090 A CN 2010800579090A CN 201080057909 A CN201080057909 A CN 201080057909A CN 102656921 A CN102656921 A CN 102656921A
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China
Prior art keywords
base station
calling party
callee
rab
core net
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CN2010800579090A
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Chinese (zh)
Inventor
钱荣福
孔令山
林凌峰
吕平宝
韦宇
汪云华
马红
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Nokia Shanghai Bell Co Ltd
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Alcatel Lucent Shanghai Bell Co Ltd
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Application filed by Alcatel Lucent Shanghai Bell Co Ltd filed Critical Alcatel Lucent Shanghai Bell Co Ltd
Publication of CN102656921A publication Critical patent/CN102656921A/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/12Setup of transport tunnels

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

Abstract

To solve the problems in the current Long Term Evolution (LTE) standard that the backhaul link bandwidth and the switch function of a serving gateway are occupied and conversation time delay is too long, etc. because a core network needs to switch conversation services between two parities when the conversation services between two parities managed by the same base station are processed, the present invention provides a method and a device for service switch. The core network obtains the information of base stations which a calling party and a called party respectively belong to, and judges whether the calling party and the called party are managed by the same base station. If the calling party and the called party are managed by the same base station, a local switch indication is sent to the same base station. Then the same base station receives the local switch indication from the core network, establishes the local switch of communication services between the calling party and the called party at the base station, and directly sends the communication services sent from the calling party and/or the called party to the opposite party. Thus, there is no need to exchange the communication services with the serving gateway through backhaul links and perform the switch by the serving gateway; therefore, the backhaul link bandwidth and the switch resources of the serving gateway are reduced, and switch time delay is shortened.

Description

Method and device for service switch
Method and equipment technical field for operation exchange
The present invention relates to the switching technology in radio communication, more particularly to radio communication.Background technology
In the LTE standard formulated at present, after business foundation, business datum is needed by gateway(Serving Gateway, abbreviation SGW) swap, i.e. the both terminal for communication, the communication service of calling party and callee all have to pass through gateway.Even in calling party and callee belong to a base station it is administrative in the case of, the local call between them is also required to swap the business datum of the local call from base station by gateway.As shown in figure 1, need to set up in network base station to it is between gateway, correspond respectively to calling party UE 1 and callee UE 2 two return links B1 and B2.Traffic path between calling party and callee is:Calling party UE 1- base station eNBs-gateway SGW- base station eNBs-callee UE 2.
It can be seen that, existing LTE standard needs to take the bandwidth of return link when handling local call.And due to introducing return link, the conversation delay between calling party and callee is larger.In densely populated region and some rural areas and outlying district, many callings are local calls:Some researchs show, a base station controller(BSC it is local call to have up to 30% in the all-calls handled by);In the Billing Analysis of some operators, this ratio has been even up to 60%.And based on existing LTE standard, the business datum of these callings has been required for base station to be interacted by return link with gateway, swapped by gateway.It can be seen that, the disadvantage mentioned above of existing LTE standard processing local call can cause sizable burden to the return link and gateway of operator in actual applications, and the blunt multi-users of JU Consumer's Experience also due to conversation delay is long and not ideal enough.The exchange function of content of the invention gateway, and the long shortcoming of conversation delay, according to the first aspect of the invention there is provided a kind of assistant base station that is used in the core net based on LTE standard to caller The method that communication service between side and callee is swapped, wherein, comprise the following steps:Obtain the calling party and the callee each belonging to base station information;According to the calling party and the callee each belonging to base station information, judge whether the calling party and the callee all administrative by same base station;With, when the calling party and the callee are administrative by the same base station, local exchange is sent to the same base station to indicate, the instruction is used to indicate that the local exchange of the communication service between the calling party and the callee is locally created in the base station in the same base station.
According to the second aspect of the invention there is provided it is a kind of in the base station based on LTE standard to belonging to the method that the communication service between the administrative calling party in this base station and callee is swapped, wherein, comprise the following steps:Receive the local exchange from the core net to indicate, the instruction is used to indicate that this base station sets up the local exchange of the communication service of the calling party and the callee in this base station;With the local exchange of the communication service of the calling party and the callee is set up in this base station, the communication service that the calling party and/or the callee are sent is transmitted directly to other side.
It is used for the equipment that assistant base station is swapped to the communication service between calling party and callee in the terminal management unit of the core net based on LTE standard there is provided a kind of according to the third aspect of the present invention, wherein, including:Acquiring unit, for obtain the calling party and the callee each belonging to base station information;Judging unit, for according to the calling party and the callee each belonging to base station information, judge whether the calling party and the callee all administrative by same base station;First emitter, for when the calling party and the callee are administrative by the same base station, local exchange is sent to the same base station to indicate, the instruction is used to indicate that the local exchange of the communication service between the calling party and the callee is locally created in the base station in the same base station.
According to the fourth aspect of the present invention there is provided it is a kind of in the base station based on LTE standard to belonging to the equipment that the communication service between the administrative calling party in this base station and callee is swapped, wherein, including:Second receiver, the local exchange for receiving the terminal management unit from core net indicates that the instruction is used to indicate that this base station sets up the local exchange of the communication service of the calling party and the callee in this base station;Communication unit, the local exchange of the communication service for setting up the calling party and the callee in this base station, the communication service that the calling party and/or the callee are sent is transmitted directly to other side. So, base station can exchange the communication service being in together between the calling party of base station administration and callee in base station, communication service need not be swapped to gateway and by gateway by return link interaction, the exchange resource of bandwidth and gateway is saved, and shortens switching delay.
Preferably, the second RAB between the first RAB between the calling party and the core net, and the core net and the callee is also created in wireless network.In this case, when wherein a side switches by calling party and callee, gateway still is able to by the RAB between the opposing party and the opposing party's interactive communication business, base station eNB also can cause less influence based on the RAB and the opposing party and gateway interactive communication business to the communication in progress.Brief description of the drawings
By reading the detailed description made to non-limiting example made with reference to the following drawings, the above of the invention and other features, objects and advantages will become more apparent:
Fig. 1 is the schematic diagram for handling the switching path of business datum in local call of existing LTE standard;
Fig. 2 is the blunt signaling process for setting up local exchange in calling party according to an embodiment of the invention of;
Fig. 3 is the signaling process for setting up local exchange in callee according to an embodiment of the invention;
Fig. 4 according to an embodiment of the invention processing local call in business datum switching path schematic diagram.
In accompanying drawing, same or similar accompanying drawing mark represents same or similar part.Embodiment
Embodiments of the present invention are described in detail with reference to Fig. 2 to Fig. 4.As shown in figure 4, user equipment (UE) 1 and user equipment (UE) 2 are administered with by base station eNB.User equipment (UE) 1 initiates the calling to user equipment (UE) 2, and base station eNB sets up user equipment (UE) 1 and UE2 local exchange at base station eNB according to the embodiment of the present invention.Before this, can be in operation business on user equipment (UE) 1 or UE2, can also be without any business of operation. As shown in Fig. 2 first, user equipment (UE) 1 is linked into base station eNB by random access procedure.Then, user equipment (UE) 1 and base station eNB interaction RRCConnectionRequest
(RRC connection requests RRCConnectionSetup (RRC connections foundation) and RRCCo are hidden, and (RRC connections are set up to be completed ctionSetup)^ ^.Then, in step S 10, the second emitter of base station eNB is by the INITIAL UE MESSAGE (initial UE messages for access user equipment UE1)Signaling is sent to the mobile management entity of in core net, main responsible chain of command Signalling exchange(Mobility Management Entity, abbreviation MME).First receiver of mobile management entity receives the INITIAL UE MESSAGE (initial UE messages in step S20)Signaling.Signalling exchange during these calls are set up is well known to one of ordinary skill in the art, is repeated no more here.
In step S 10, the second emitter of base station eNB is in INITIAL UE MESSAGE
(initial UE message)The mark of this base station eNB belonging to user equipment (UE) 1 is sent to mobile management entity in message.In step S20, the first receiver of mobile management entity receives the mark of the base station eNB belonging to the user equipment (UE) 1 of base station eNB transmission.Mobile management entity preserves the mark of the base station eNB belonging to user equipment (UE) 1.
Afterwards, NAS information transfers are carried out in network.
Then, mobile management entity will be used to indicate the contexts such as call QoS(Context) (initial context sets up request to the INITIAL CONTEXT SETUP REQUEST of information)Signaling is sent to base station eNB.(RRC is connected replacement to base station eNB with the interaction of user equipment (UE) 1 RRCConnectionReconfiguration)Signaling and RRCConnectionReconfigurationComplete (the speech orders of RRC ^^ ^ ^ 4.Afterwards, NAS information transfers are carried out in network.Then, by INITIAL CONTEXT SETUP RESPONSE, (initial context is set up to be responded base station eNB)Signaling sends back mobile management entity.
Then, mobile management entity is by for setting up user equipment (UE) 1 to the E-UTRAN Radio Access Bearer between gateway SGW(E-UTRAN Radio Access Bearer, abbreviation E-RAB) E-RAB SETUP REQUEST (E-RAB set up request)Signaling is sent to base station eNB.(RRC is connected to be reconfigured base station eNB with the interaction of user equipment (UE) 1 RRCConnectionReconfiguration)Signaling and
Replace page(The 26th article of detailed rules and regulations) (RRC connections reconfigure completion J signalings to RRCConnectionReconfigurationComplete.Afterwards, base station eNB creates the E-RAB, and will be used to indicate whether E-RAB creates successful RAB and create response E-RAB SETUP RESPONSE (E-RAB foundation responses)Signaling sends back mobile management entity.Afterwards, NAS information transfers are carried out in network.At this moment, user equipment (UE) 1 has built up to the E-RAB between gateway SGW and finished.The E-RAB is referred to as in caller E-RAB, such as Fig. 4 below, the E-RAB includes return link B l.
Signalling exchange during the above call is set up is well known to one of ordinary skill in the art, is repeated no more here.
Come Fig. 3, mobile management entity and the interaction NAS information of user equipment (UE) 1.And the cell-phone number based on callee's user equipment (UE) 2 etc., in home subscriber server(Home Subscriber Server, abbreviation HSS) place inquires UID of user equipment (UE) 2 etc..
Afterwards, mobile management entity sends beep-page message to its each base station administrative, including base station eNB, to search out corresponding UID user equipment (UE) 2.Base station eNB is after the beep-page message of searching user equipment (UE) 2 of mobile management entity transmission is received, and broadcast paging messages in its administrative area, the beep-page message is received by user equipment (UE) 2.
Afterwards, user equipment (UE) 2 is linked into base station eNB by random access procedure.Then, ((RRC connections, which are set up, to be completed by RRC connection request λ RRCConnectionSetup (RRC connections foundation) and RRCConnectionSetup by user equipment (UE) 2 and base station eNB interaction RRCCo Teng ctionRequest) At .Then, in step S 12, the second emitter of base station eNB is by INITIAL UE MESSAGE (the initial UE message for access user equipment UE2)Signaling is sent to mobile management entity.In step S22, the first receiver of mobile management entity receives the INITIAL UE MESSAGE (initial UE messages)Signaling.Signalling exchange during these calls are set up is well known to one of ordinary skill in the art, is repeated no more here.
In step S 12, the first emitter of base station eNB is in INITIAL UE MESSAGE (initial UE messages)The mark of this base station eNB belonging to user equipment (UE) 2 is sent to mobile management entity in message.In step S22, the first receiver of mobile management entity receives the mark of the base station eNB belonging to the user equipment (UE) 2 of base station eNB transmission.
5
Replace page(The 26th article of detailed rules and regulations) Then, the judging unit of mobile management entity judges whether calling part user equipment UE 1 and callee's user equipment (UE) 2 are all administrative by same base station.For example, it is judged that identifying whether for the mark of base station eNB belonging to user equipment (UE) 2 and the base station eNB belonging to the user equipment (UE) 1 preserved before is identical.In the present embodiment, mobile management entity judges calling part user equipment UE 1 and callee's user equipment (UE) 2 are all administrative by same base station eNB.
Afterwards, NAS information transfers are carried out in network.
Then, mobile management entity will be used to indicate the contexts such as call QoS(Context) (initial context sets up request to the INITIAL CONTEXT SETUP REQUEST of information)Signaling is sent to base station eNB.(RRC is connected to be reconfigured base station eNB with the interaction of user equipment (UE) 2 RRCConnectionReconfiguration)Signaling and RRCConnectionReconfigurationComplete (RRC ^^^^ J signalings.Afterwards, NAS information transfers are carried out in network.Then, by INITIAL CONTEXT SETUP RESPONSE, (initial context is set up to be responded base station eNB)Signaling sends back mobile management entity.
Then, in step S26, mobile management entity is by for setting up user equipment (UE) 2 to the enhanced wireless access bearer between gateway SGW(Enhanced-Radio Access Bearer, abbreviation E-RAB) E-RAB SETUP REQUEST (E-RAB set up request)Signaling is sent to base station eNB.In step S 14, base station eNB receives the E-RAB SETUP REQUEST, and (E-RAB sets up request)Signaling.(RRC is connected to be reconfigured base station eNB with the interaction of user equipment (UE) 2 RRCConnectionReconfiguration)(RRC connections reconfigure completion X speech orders by signaling and RR CConnectionReconfigurationCo mplete.Afterwards, in step S 16, base station eNB creates the E-RAB, and will be used to indicate whether E-RAB creates successful RAB and create response E-RAB SETUP RESPONSE (E-RAB foundation responses)Signaling sends back mobile management entity, and mobile management entity receives the E-RAB SETUP RESPONSE in step S28, and (E-RAB sets up response)Signaling.Afterwards, NAS information transfers are carried out in network.At this moment, user equipment (UE) 2 has built up to the E-RAB between gateway SGW and finished.Hereinafter, the E-RAB is referred to as called E-RAB, such as Fig. 4, the E-RAB includes return link B2.Signalling exchange during these calls are set up is well known to one of ordinary skill in the art, is repeated no more here.
6
Replace page(The 26th article of detailed rules and regulations) Especially, in step S26, mobile management entity indicates a local exchange to be contained in E-RAB SETUP REQUEST (E-RAB foundation requests)Base station eNB is sent in signaling, to indicate that the local exchange of the communication service between calling party UE1 and callee UE2 is locally created in the base station in base station eNB.Calling party and communication service are determined for ease of base station eNB, in one embodiment, the local exchange indicates the mark containing calling party UE1 and caller E-RAB mark.Table 1 below shows that (E-RAB sets up request to E-RAB SETUP REQUEST)Signaling, and including present embodiment define be used as local exchange indicate IE (runic is represented).
Table 1
When mobile management entity indicates that base station eNB carries out local exchange, (E-RAB sets up request to E-RAB SETUP REQUEST)Signaling includes local exchange and indicates IE and local exchange E-RAB information IE:In local exchange indicates IE, optionally include calling party UE1 mark(Caller eNB UE S1AP ID), the alternatively mark including base station eNB(Caller is global
Replace page(The 23rd article of detailed rules and regulations) eNB ID );In local exchange E-RAB information IE, optionally include caller E-RAB mark(Caller E-RAB ID).Base station eNB determines calling party UE1 and callee UE2 call carrying out local exchange.
Then, base station eNB sets up the local exchange of calling party UE1 and callee UE2 communication service in this base station.As shown in Fig. 2 and Fig. 3 foots, after base station eNB receives UE1 and/or UE2 is sent to the communication service of other side, communication service directly can be sent to other side, avoid communication service by return link interaction to gateway SGW and swapped by gateway SGW, the bandwidth of return link and gateway SGW exchange function are saved, and shortens switching delay.It is appreciated that calling party UE1 and callee UE2 communication service is exchanged in base station eNB to be carried out in each protocol layer of protocol stack, it will not go into details here.
(E-RAB sets up response to the E-RAB SETUP RESPONSE that base station eNB is sent in step s 16)In signaling, (runic is represented the IE whether defined including present embodiment, expression local exchange is successfully established)As shown in the following Table 2.
Table 2
In the case where base station eNB does not support local exchange, it does not set up local exchange, and (E-RAB sets up response to the E-RAB SETUP RESPONSE sent at it)Do not include in signaling
8 detailed rules and regulations the 2nd δ articles) The mark;When base station eNB support local exchange, but for some reason, such as local exchange function deficiency is without setting up during local exchange, and the ident value is false;When base station eNB support local exchange, and when being successfully established local exchange, the ident value is true.
In this embodiment, make use of existing E-RAB SETUP REQUEST, (E-RAB sets up request)(E-RAB sets up response by signaling and E-RAB SETUP RESPONSE)Signaling, has increased several IE for local exchange newly wherein.It is appreciated that the embodiment is preferred, rather than it is required.The information exchange relevant with local exchange can be carried out between mobile management entity and base station by other signalings.
During more than, in the case where establishing local exchange, mobile management entity remains all user plane informations for distributing to the relevant E-RAB with user equipment (UE) 1 and UE2.From the perspective of the angle of core net, i.e. mobile management entity and gateway, the RAB of user equipment (UE) 1 and UE2 respectively between gateway still has.Base station eNB also remains SGW user plane information in user equipment (UE) 1 and UE2 UE contexts.This means, base station eNB can still pass through return link B1 and B2 interactive service data with gateway, this is when wherein side's calling party UE1 and callee UE2 switches, gateway still is able to interact communication service between calling party and callee with the opposing party by the RAB between the opposing party, and base station eNB also can be based on the communication service between the RAB and the opposing party and gateway interaction calling party and callee.It is appreciated that the embodiment is preferred, rather than it is required.RAB can not be set up between calling party or callee and core net.Although elaborating and describing the present invention in the drawings and foregoing description, it is considered that this illustrates and described to be illustrative and exemplary, rather than restricted;The invention is not restricted to the above-mentioned embodiment of institute.
The those skilled in the art of those the art can understand by studying specification, disclosure and accompanying drawing and appended claims and implement other changes to the embodiment of disclosure.In the claims, word " including " is not excluded for other elements and step, and wording " one " is not excluded for plural number.In the practical application of invention, the function of cited multiple technical characteristics in the possible perform claim requirement of a part.Any reference in claim should not be construed as the limitation to scope.
Replace page(Detailed rules and regulations 2S)

Claims (1)

  1. Claims
    1. a kind of be used for the method that assistant base station is swapped to the communication service between calling party and callee in the core net based on LTE standard, wherein, comprise the following steps:
    - obtain the information of the respective affiliated base station of the calling party and the callee;
    - according to the calling party and the callee each belonging to base station information, judge whether the calling party and the callee all administrative by same base station;
    - when the calling party and the callee are administrative by the same base station, local exchange is sent to the same base station to indicate, the instruction is used to indicate that the local exchange of the communication service between the calling party and the callee is locally created in the base station in the same base station.
    2. according to the method described in claim 1, it is characterized in that, the obtaining step receive the calling party and the callee each belonging to the user equipment message that sends respectively of base station, the mark in each message respectively containing the respective affiliated base station of the calling party and the callee;After the user equipment message of the transmission of the base station belonging to the calling party is received, this method also comprises the following steps:
    A. the first RAB between the calling party and the core net is created;After the user equipment message of the transmission of the base station belonging to the callee is received, this method also comprises the following steps:
    B. the second RAB between the core net and the callee is created.
    3. method according to claim 2, it is characterised in that also comprise the following steps:- be based on first RAB, interacted with the calling party callee mark and the calling party and the callee between communication service;And/or
    - be based on second RAB, interacted with the callee calling party mark and the calling party and the callee between communication service.
    4. method according to claim 2, it is characterized in that, the step b, which sends one, is used to creating the RAB request to create of second RAB to the same base station, the request includes the local exchange and indicated, the mark containing the calling party and the mark of first RAB in the instruction.
    5. method according to claim 4, it is characterised in that this method also comprises the following steps:
    - receive whether from the same base station, expression second RAB creates successful RAB establishment response, the status information for representing whether the local exchange is successfully established is contained in the response.
    6. it is a kind of in the base station based on LTE standard to belonging to the method that the communication service between the administrative calling party in this base station and callee is swapped, wherein, comprise the following steps:
    - the local exchange instruction from the core net is received, the instruction is used to indicate that this base station sets up the local exchange of the communication service of the calling party and the callee in this base station;
    - set up in this base station the calling party and the callee communication service local exchange, the communication service that the calling party and/or the callee are sent is transmitted directly to other side.
    7. method according to claim 6, it is characterised in that this method also comprises the following steps:
    - send in the user equipment message of the calling party and the callee, each message the mark containing this base station respectively respectively to core net;
    After the user equipment message of the calling party is sent to core net, this method also comprises the following steps:
    I. the first RAB between the calling party and the core net is created;After the user equipment message of the callee is sent to core net, this method also comprises the following steps:
    Ii. the second RAB between the core net and the callee is created.
    8. method according to claim 7, it is characterised in that this method also Bao includes Ru Xia Bu Sudden:
    - be based on first RAB, interacted with the calling party and the core net callee mark and the calling party and the callee between communication service;And/or
    - be based on second RAB, interacted with the callee and the core net calling party mark and the calling party and the callee between communication service.
    9. method according to claim 7, it is characterised in that the step ii is in wound Build before second RAB, receive one from the core net RAB request to create for being used to create second RAB, the request includes the local exchange and indicated, the mark containing the calling party and the mark of first RAB in the instruction;
    The establishment step sets up the local exchange according to the mark of the calling party and the mark of first RAB.
    10. method according to claim 9, it is characterised in that this method also comprises the following steps:
    - it will represent whether second RAB creates successful RAB establishment response and be sent to the core net, the response includes the status information for representing whether the local exchange is successfully established.
    11. a kind of be used for the equipment that assistant base station is swapped to the communication service between calling party and callee in the terminal management unit of the core net based on LTE standard, wherein, including:
    - acquiring unit, for obtain the calling party and the callee each belonging to base station information;
    - judging unit, for according to the calling party and the callee each belonging to base station information, judge whether the calling party and the callee all administrative by same base station;
    - the first emitter, for when the calling party and the callee are administrative by the same base station, local exchange is sent to the same base station to indicate, the instruction is used to indicate that the local exchange of the communication service between the calling party and the callee is locally created in the base station in the same base station.
    12. the equipment according to claim 11, it is characterized in that, the acquiring unit includes the first receiver, for receive the calling party and the callee each belonging to the user equipment message that sends respectively of base station, the mark in each message respectively containing the respective affiliated base station of the calling party and the callee;
    The equipment also includes:
    - first processing units, are used for:
    After the user equipment message of the transmission of the base station belonging to the calling party is received, the first RAB between the calling party and the core net is created;With After the user equipment message of the transmission of the base station belonging to the callee is received, the second wireless access ^ ^ created between the core net and the callee are carried.
    13. it is a kind of in the base station based on LTE standard to belonging to the equipment that the communication service between the administrative calling party in this base station and callee is swapped, wherein, including:
    - the second receiver, the local exchange for receiving the terminal management unit from core net indicates that the instruction is used to indicate that this base station sets up the local exchange of the communication service of the calling party and the callee in this base station;
    - communication unit, the local exchange of the communication service for setting up the calling party and the callee in this base station, the communication service that the calling party and/or the callee are sent is transmitted directly to other side.
    14. equipment according to claim 13, it is characterised in that also include:
    - the second emitter, for being received in second receiver before the local exchange indicates, sends in the user equipment message of the calling party and the callee, each message the mark containing this base station respectively respectively to core net;
    - second processing unit, is used for:
    After the user equipment message of the calling party is sent to the terminal management unit, the first RAB between the calling party and the core net is created;With
    After the user equipment message of the callee is sent to core net, the second RAB between the core net and the callee is created.
CN2010800579090A 2010-03-19 2010-03-19 Method and device for service switch Pending CN102656921A (en)

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