CN100428717C - Method for keeping service session continuity - Google Patents
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- CN100428717C CN100428717C CNB2005101080574A CN200510108057A CN100428717C CN 100428717 C CN100428717 C CN 100428717C CN B2005101080574 A CNB2005101080574 A CN B2005101080574A CN 200510108057 A CN200510108057 A CN 200510108057A CN 100428717 C CN100428717 C CN 100428717C
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Abstract
In the invention, UE (user end) access the service bear network and builds the service session with the service bear network; when the serving area of packet switching network where the UE locates at varies, the method comprises: a) UE builds the connection with the gateway of current serving area, takes said gateway as the current serving gateway of UE; b) the access gateway sets the UE current serving gateway as its own next jump; UE accesses the service bear network to keep the service session through said serving gateway and said access gateway. The invention also reveals other two methods for keeping the service session continuity.
Description
Technical field
The present invention relates to the service carrying network access technology, particularly subscriber equipment (UE) when mobile, keeps the successional method of service conversation between UE and the service carrying network between a plurality of service areas of the packet switching network.
Background technology
At present, multiple applied business has obtained extensive use, and UE will be by the IAD access service bearer network of self place packet switching network when using applied business.Wherein, normal structures such as 3GPP and 3GPP2 have all successively been released internet protocol multimedia subsystem service bearer networks such as (IMS), and purpose is to use a kind of standardization open architecture to realize diversified multimedia service application in the mobile network.UE inserts the IMS network usually, dialogue-based initiation protocol (SIP) is set up the IP multimedia service session.Here, so-called packet switching network is meant: with Internet Protocol (IP) agreement or based on other agreements of IP protocol development is the network of service bearer agreement, such as GPRS (GPRS) network that uses based on the general packet wireless service tunnel protocol (GTP) of IP/ User Datagram Protoco (UDP) (UDP), the packet switching network of current main-stream comprises following a few class: GPRS network, wireless lan (wlan) network, World Interoperability for Microwave Access, WiMax technology (WiMAX) network or the like.
But, the carrying out in the process of service conversation between UE and service carrying network, UE may be displaced between some service areas in one or more packet switching networks.When UE when the service area at original place moves to another service area, the current business session just has to interrupt.UE can only discharge the current business session if continue to use professionally, and the gateway access service bearer network of the service area by current place rebulids service conversation again.Here, same applied business can be carried on one or more packet switching networks, that is to say: the current place of the UE packet switching network may be same type or networks of different type with the packet switching network at original place.
Development along with data service, the overlay area of various data services will enlarge day by day, thing followed problem is exactly: in same service conversation, increasing UE may switch between a plurality of service areas, if each UE will interrupt original session when entering a new service area, set up new session, this will have a strong impact on the applied business quality, and rebuliding of service conversation also will take a large amount of system handles resources, thereby influence the normal operation of other service conversation.Therefore, when how to make UE pass through a plurality of service area access service bearer network, still can keep the service conversation continuity, become problem demanding prompt solution in the current business bearer network access technology.
Summary of the invention
In view of this, main purpose of the present invention is to provide three kinds to keep the successional methods of service conversation, when UE switches between different service areas, can guarantee that the session of UE current business do not interrupt.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention discloses the successional method of a kind of maintenance service conversation, UE is by the IAD access service bearer network of the packet switching network at self place, and sets up service conversation with this service carrying network; When the service area at UE place changed, this method comprised:
The gateway of A3, UE and current place service area connects, and this gateway is the current gateway of UE;
B3, judge whether current business is real time business, if real time business, then described IAD is changed to self next jumping with described gateway, and UE continues the current business session by this gateway and this IAD access service bearer network; Otherwise described gateway is changed to the IAD of UE, and UE continues the current business session by this gateway access service bearer network.
Among the step B3, after described UE continues the current business session by gateway and IAD access service bearer network, further comprise step C3: when service conversation finishes, described gateway is changed to the IAD of UE, UE is by this gateway access service bearer network.
Among the step B3, the described method that gateway is changed to next jumping is: described IAD obtains the gateway information of described gateway, connect with this gateway, gateway information by this gateway is revised the current business route, next that this gateway is changed to self jumped, again with self with UE between be connected release.
Wherein, described IAD obtains the method for the gateway information of gateway and is: described IAD obtains the gateway information of described gateway from UE; Perhaps, described gateway obtains the gateway information of described IAD from UE, and the gateway information that sends self by the gateway information of this IAD is to this IAD.
Among the step B3, the method for described judgement type of service is: judge according to the quality of service requirement QoS of current business or user's the quality requirement QoE that experiences, or judge according to the type of current business.
Among the step B3, the described method that gateway is changed to the IAD of UE is: described IAD obtains the gateway information of described gateway, this IAD sends the user profile of UE to this gateway by the gateway information of this gateway, this IAD disconnects with this UE and being connected, by this gateway as the current IAD of UE.
Among the step C3, the described method that gateway is changed to the IAD of UE is: described IAD sends the user profile of UE to this gateway, and this IAD disconnects with this gateway and being connected, by this gateway as the current IAD of UE.
Wherein, the packet switching network at the packet switching network at the current place of UE and the original place of UE is the packet switching network of identical or different type; When the packet switching network at the packet switching network at the current place of UE and the original place of UE was the packet switching network of the same type, described gateway and IAD communicated by the service bearer agreement of the type packet switching network; When the packet switching network at the packet switching network at the current place of UE and the original place of UE was the dissimilar packet switching network, described gateway and IAD communicated by Internet Protocol.
Wherein, the packet switching network at described UE place is: GPRS network or wlan network or WiMAX network.
Wherein, described service carrying network is the IMS network.
By such scheme as can be seen, key of the present invention is: when UE moved to new service area, the IAD of UE is changed to self with the gateway of this service area, and next was jumped or the gateway of this service area is changed to the up-to-date IAD of UE; And then UE can perhaps directly pass through the gateway access service bearer network of this service area by the gateway and the IAD access service bearer network of this service area.
Therefore, the successional method of maintenance service conversation provided by the present invention, in the process of service conversation, both made UE the situation that service area switches occur, the current business session is proceeded, thus promote greatly the user business experience, quality of service is guaranteed, in addition, because need not to be forced to as prior art the winding-up session sets up process to new service area gateway initiation session again, has also just avoided a large amount of unnecessary sessions to set up flow process, thereby conserve system resources.
Description of drawings
Fig. 1 is first method one a preferred embodiment handling process schematic diagram of the present invention;
Fig. 2 when using first method of the present invention, the schematic diagram that UE switches between different service areas;
Fig. 3 is second method one a preferred embodiment handling process schematic diagram of the present invention;
Fig. 4 when using second method of the present invention, the schematic diagram that UE switches between different service areas;
Fig. 5 is the third method one preferred embodiment handling process schematic diagram of the present invention.
Embodiment
The present invention is further described in more detail below in conjunction with drawings and the specific embodiments.
The invention provides three kinds and keep the successional method of service conversation, after UE sets up service conversation by the IAD access service bearer network of self place packet switching network and with this service carrying network, when the service area at UE place changed, the design philosophy of these three kinds of methods was respectively:
The gateway of first method, UE and current place service area connects, and this gateway will be as the current gateway of UE, and again that UE is the current gateway of IAD is changed to next jumping of self.Thereby UE continues the current business session by this gateway and this IAD access service bearer network.
The gateway of second method, UE and current place service area connects, and this gateway will be as the current gateway of UE, and again that UE is current gateway is changed to IAD.Thereby UE continues the current business session by this gateway access service bearer network.
The third method, this kind method combine the characteristics of real time business and non-real-time service and the treatment mechanism of above-mentioned first method and second method, when the gateway of the current place of UE service area and UE connects and as UE after the current gateway, judge whether current business is real time business, if then that UE is current gateway is changed to next jumping of IAD; Otherwise the gateway that UE is current is changed to IAD.
Described in detail below in conjunction with the processing of accompanying drawing three kinds of methods of the present invention.
Fig. 1 is first method one a preferred embodiment handling process schematic diagram of the present invention.As shown in Figure 1, concrete treatment step comprises:
Step 101: when the service area at UE place changed, the gateway of UE and current place service area connected, and this gateway will be as the current gateway of UE.
Here, each service area should comprise several base stations (BS), UE should be at first with self place service area in the strongest BS of signal set up the Radio Link carrying, could set up professional the connection with the gateway of this service area then.The serving BS broadcasts that should be called as UE with the BS that UE sets up Radio Link carrying.UE will constantly detect the wireless signal strength from each BS in moving process, when UE finds that the BS signal of a certain non-serving BS broadcasts is in continuous reinforcement, and signal strength signal intensity acquires a certain degree so that when satisfying the BS switching condition, UE will set up the Radio Link carrying with the BS that this signal satisfies switching condition, and discharge Radio Link between self and the original serving BS broadcasts, this will be called the current serving BS broadcasts of UE with the BS that UE sets up the Radio Link carrying, thereby finish the handoff procedure between the BS.When the original serving BS broadcasts of the current serving BS broadcasts of UE and UE belongs to different service area, we can say that variation has taken place the service area at UE place.
When UE switches between BS, UE also will report self current gateway to the information of each BS, so whether the service area that the gateway of UE can real-time judge UE place changes.Belong to known technology about the concrete processing method that realizes judgement, and non-emphasis of the present invention, so this paper is not described further.Because the present invention does not relate to the improvement of handling between UE and the BS, institute thinks simplify to be described, and this paper only describes the processing between UE and gateway and the gateway, and the processing between UE and the BS is wherein omitted.
The current IAD of step 102:UE obtains the gateway information of UE current service gateway, connect with this gateway, and revise the current business route by the gateway information of this gateway, next that this gateway is changed to self jumped, discharge then self with UE between be connected.
Wherein, the IAD method of obtaining the gateway information of gateway has two kinds substantially: one, UE can be after connecting with gateway sends to this IAD with the gateway information of current this gateway.Two, after gateway and UE connect, obtain the gateway information of this IAD from UE, and connect and send by the gateway information of this IAD and this IAD and join request to this IAD, during joining request, this carries the gateway information of this gateway.The present invention does not limit the concrete grammar that IAD obtains the gateway information of gateway.Here, gateway information comprises at least: the address information of gateway, possibility can also comprise the relevant BS address information of this gateway.
In addition, UE is after connecting with gateway, and the switching notice that can send the gateway information that carries IAD is to gateway, thereby gateway can join request to the IAD transmission according to the switching notice that receives.This switching notice can be the independent message that sends, and the part that is connected the request of foundation when perhaps connecting with gateway as the described UE of step 101 sends.
Step 103: through the processing of step 101 and step 102, in up link, UE continues service conversation via this gateway and this IAD access service bearer network successively; And at down link, service carrying network continues service conversation via this IAD and this gateway successively.As seen, through above-mentioned processing, the continuity of current business session is guaranteed.
In the service conversation process, described IAD is changed to self with gateway, and next is jumped the processing promptly revise self next hop address and can't produce too many processing delay, quality to the current business session can not produce too many influence yet, the processing that the gateway of UE is changed to IAD then needs more processing delay, and the service conversation quality is had considerable influence.But when service conversation finishes, just need not to consider influence, can directly the current service gateway be changed to the IAD of UE, promptly carry out following steps 104 and step 105 quality of service:
Step 104: when the service conversation of UE finishes, the current IAD of UE is the gateway information of 102 gateways that obtain set by step, the user profile of this UE that self is preserved sends to the current gateway of UE, this IAD discharge again self with this gateway between be connected, by the IAD of this gateway as UE.Here, described user profile comprises: service related information of user ID and this user or the like.
Step 105: this gateway will become the current IAD of UE simultaneously, and UE directly communicates by this gateway access service bearer network.
Fig. 2 when using first method of the present invention, the schematic diagram that UE switches between different service areas.As shown in Figure 2, UE from top to bottom moves, and passes through service area 1, service area 2 and service area 3 successively.Wherein, the gateway of service area 1, service area 2 and service area 3 is respectively gateway 1, gateway 2 and gateway 3, and gateway 1, gateway 2 and gateway 3 are connected with the IMS network.
At first, UE is positioned at service area 1, sets up professional the connection with gateway 1, and inserts the IMS network by gateway 1, and gateway 1 is as the IAD of UE at this moment, and the media data of service conversation flows to UE from the IMS network through gateway 1.
When UE moved to service area 2, UE and gateway 2 connected, and gateway 2 is as the gateway of UE at this moment.Gateway 1 is changed to gateway 2 next jumping of self again, and is connected with the UE disconnection.Thereby the media data of service conversation flows to UE through gateway 1, gateway 2 successively from the IMS network.
In like manner, when UE moved to service area 3, UE and gateway 3 connected, and gateway 3 is as the gateway of UE at this moment.Gateway 1 is changed to gateway 3 next jumping of self again, and gateway 2 disconnects with UE and being connected then.Thereby the media data of service conversation flows to UE through gateway 1, gateway 3 successively from the IMS network.
Fig. 3 is second method one a preferred embodiment handling process schematic diagram of the present invention.As shown in Figure 3, the concrete processing comprises:
Step 301: when the service area at UE place changed, the gateway of UE and current place service area connected, and this gateway will be as the current gateway of UE.
The current IAD of step 302:UE obtains the gateway information of the gateway of UE, and this IAD sends the user profile of UE to this gateway, and this IAD disconnects with this UE and being connected, by the IAD of this gateway as UE.Here, described user profile comprises: user ID, this user's service related information and information of the current service conversation that carries out or the like.
Wherein, the method for gateway information that IAD obtains gateway is described identical with Fig. 1, has two kinds substantially, and repeat specification no longer is described in detail in detail here.
Step 303: this gateway will become the current IAD of UE simultaneously, and UE directly continues the current business session by this gateway access service bearer network.
Fig. 4 when using second method of the present invention, the schematic diagram that UE switches between different service areas.As shown in Figure 3, UE from top to bottom moves, and passes through service area 1, service area 2 and service area 3 successively.Wherein, the gateway of service area 1, service area 2 and service area 3 is respectively gateway 1, gateway 2 and gateway 3, and gateway 1, gateway 2 and gateway 3 are connected with the IMS network.
At first, UE is positioned at service area 1, sets up professional the connection with gateway 1, and inserts the IMS network by gateway 1, and gateway 1 is as the IAD of UE at this moment, and the media data of service conversation flows to UE from the IMS network through gateway 1.
When UE moved to service area 2, UE and gateway 2 connected, and gateway 2 is as the gateway of UE at this moment.Gateway 1 is sent to gateway 2 with the user profile of UE again, and the current business session is switched to gateway 2, and is connected with the UE disconnection, and 2 whiles of gateway this moment are as gateway and the IAD of UE.Thereby the media data of service conversation flows to UE from the IMS network through gateway 2.
In like manner, when UE moved to service area 3, UE and gateway 3 connected, and gateway 3 is as the gateway of UE at this moment.Gateway 2 is sent to gateway 3 with the user profile of UE again, and the current business session is switched to gateway 3, and is connected with the UE disconnection, and 3 whiles of gateway this moment are as gateway and the IAD of UE.Thereby the media data of service conversation flows to UE from the IMS network through gateway 3.
Service carrying network described herein is often referred to the IMS network, and the packet switching network at UE place can be GPRS network or wlan network or WiMAX network or the like.UE can switch between the service area of the packet switching network of identical or different type, that is: the packet switching network at the current place of UE uses identical or different block exchange modes to communicate with the packet switching network at the original place of UE.According to background technology as can be known, UE may switch between the service area of the dissimilar packet switching networks, such as: among Fig. 2, service area 1 belongs to GPRS network, and service area 2 belongs to wlan network, at this moment, can adopt the IP agreement to communicate between IAD and the gateway.When UE switches between the service area of the same type packet switching network, then adopt the service bearer agreement of current type packet switching network support to communicate between gateway and the IAD.About specifically between gateway and the IAD connect, communication process such as interactive information all undertakies by the benchmark service bearing protocol, and the problem that solves of gateway and the non-the present invention that communicates by letter between the IAD, so this paper is not described in further detail.
Fig. 5 is the third method one preferred embodiment handling process schematic diagram of the present invention.Present embodiment carries out different processing at the characteristic of real time business and non-real-time service, real time business is adopted described first method, and non-real-time service is adopted described second method.As shown in Figure 5, concrete treatment step comprises:
Step 501: when the service area at UE place changed, the gateway of UE and current place service area connected, and this gateway is as the current gateway of UE.
Step 502: judge whether current business is real time business, if then execution in step 503; Otherwise execution in step 505.
Here, can be according to quality of service requirement (QoS) value of current business, or experience quality requirement (QOE according to the user, Quality of Experience) information is judged, or judge according to present type of service, such as: speech business is a real time business, and messaging service is a non-real-time service.
The current IAD of step 503:UE obtains the gateway information of UE current service gateway, connect with this gateway, and revise the current business route by the gateway information of this gateway, next that again this gateway is changed to self jumped, discharge then self with UE between be connected.
Step 504: in up link, UE continues service conversation via this gateway and this IAD access service bearer network successively; And at down link, service carrying network continues service conversation via this IAD and this gateway successively, finishes to work as pre-treatment.
The current IAD of step 505:UE obtains the gateway information of the gateway of UE, this IAD sends the user profile of UE to this gateway by the gateway information of this gateway, this IAD disconnects with this UE and being connected, by the IAD of this gateway as UE.
Step 506: this gateway will become the current IAD of UE simultaneously, and UE directly continues the current business session by this gateway access service bearer network.
In like manner described with Fig. 1, after described step 504, also can further comprise:
Step 507: when the service conversation of UE finishes, the current IAD of the UE gateway information of 503 gateways that obtain set by step sends to this gateway with the user profile of this UE of self preserving, this IAD discharge again self with this gateway between be connected, by the IAD of this gateway as UE.
Step 508: this gateway will become the current IAD of UE simultaneously, and UE directly continues the current business session by this gateway access service bearer network.
In sum, when application the inventive method UE switches between each service area, still can guarantee the continuity of the current service conversation that carries out, and can further contemplate real time business and non-real-time service to real-time require different, and adopt different treatment mechanisms, with the gateway resource maintenance service continuity of effectively utilizing the packet switching network and the quality of taking into account miscellaneous service.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.All any modifications of being done within the spirit and principles in the present invention, be equal to replacement, improvement etc., all be included in protection scope of the present invention.
Claims (10)
1, the successional method of a kind of maintenance service conversation, UE is by the IAD access service bearer network of the packet switching network at self place, and sets up service conversation with this service carrying network; It is characterized in that when the service area at UE place changed, this method comprised:
The gateway of A3, UE and current place service area connects, and this gateway is the current gateway of UE;
B3, judge whether current business is real time business, if real time business, then described IAD is changed to self next jumping with described gateway, and UE continues the current business session by this gateway and this IAD access service bearer network; Otherwise described gateway is changed to the IAD of UE, and UE continues the current business session by this gateway access service bearer network.
2, method according to claim 1, it is characterized in that, among the step B3, after described UE continues the current business session by gateway and IAD access service bearer network, further comprise step C3: when service conversation finishes, described gateway is changed to the IAD of UE, and UE is by this gateway access service bearer network.
3, method according to claim 1, it is characterized in that, among the step B3, the described method that gateway is changed to next jumping is: described IAD obtains the gateway information of described gateway, connect with this gateway, revise the current business route by the gateway information of this gateway, next that this gateway is changed to self jumped, again with self with UE between be connected release.
4, method according to claim 3 is characterized in that, the method that described IAD obtains the gateway information of gateway is:
Described IAD obtains the gateway information of described gateway from UE; Perhaps,
Described gateway obtains the gateway information of described IAD from UE, and the gateway information that sends self by the gateway information of this IAD is to this IAD.
5, method according to claim 1, it is characterized in that, among the step B3, the method for described judgement type of service is: judge according to the quality of service requirement QoS of current business or user's the quality requirement QoE that experiences, or judge according to the type of current business.
6, method according to claim 1, it is characterized in that, among the step B3, the described method that gateway is changed to the IAD of UE is: described IAD obtains the gateway information of described gateway, this IAD sends the user profile of UE to this gateway by the gateway information of this gateway, this IAD disconnects with this UE and being connected, by this gateway as the current IAD of UE.
7, method according to claim 2, it is characterized in that, among the step C3, the described method that gateway is changed to the IAD of UE is: described IAD sends the user profile of UE to this gateway, this IAD disconnects with this gateway and being connected, by this gateway as the current IAD of UE.
8, method according to claim 1 is characterized in that, the packet switching network at the packet switching network at the current place of UE and the original place of UE is the packet switching network of identical or different type;
When the packet switching network at the packet switching network at the current place of UE and the original place of UE was the packet switching network of the same type, described gateway and IAD communicated by the service bearer agreement of the type packet switching network;
When the packet switching network at the packet switching network at the current place of UE and the original place of UE was the dissimilar packet switching network, described gateway and IAD communicated by Internet Protocol.
According to claim 1 or 8 described methods, it is characterized in that 9, the packet switching network at described UE place is: GPRS network or wlan network or WiMAX network.
10, method according to claim 1 and 2 is characterized in that, described service carrying network is the IMS network.
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| CNB2005101080574A CN100428717C (en) | 2005-09-29 | 2005-09-29 | Method for keeping service session continuity |
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| WO2009024075A1 (en) * | 2007-08-21 | 2009-02-26 | Huawei Technologies Co., Ltd. | Method and terminal equipment for realizing service continuity |
| CN101127742B (en) * | 2007-09-24 | 2011-07-13 | 中兴通讯股份有限公司 | A method for access gateway to network phone sources |
| CN105813111B (en) * | 2014-12-31 | 2021-01-26 | 中兴通讯股份有限公司 | Service flow transmission path optimization method and device and MME |
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| CN1139228C (en) * | 1998-12-04 | 2004-02-18 | 艾利森电话股份有限公司 | Handover in communication system |
| US20050025164A1 (en) * | 2003-07-16 | 2005-02-03 | Telefonaktiebolaget L M Ericsson (Publ) | Seamless hand-off of mobile node to a wireless local area network (WLAN) |
| CN1606740A (en) * | 2001-12-19 | 2005-04-13 | 汤姆森特许公司 | Method and apparatus for handing off a mobile terminal between a mobile network and a wireless LAN |
| US6904025B1 (en) * | 1999-10-12 | 2005-06-07 | Telefonaktiebolaget Lm Ericsson (Publ) | Wide area network mobility for IP based networks |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1139228C (en) * | 1998-12-04 | 2004-02-18 | 艾利森电话股份有限公司 | Handover in communication system |
| US6904025B1 (en) * | 1999-10-12 | 2005-06-07 | Telefonaktiebolaget Lm Ericsson (Publ) | Wide area network mobility for IP based networks |
| CN1606740A (en) * | 2001-12-19 | 2005-04-13 | 汤姆森特许公司 | Method and apparatus for handing off a mobile terminal between a mobile network and a wireless LAN |
| US20050025164A1 (en) * | 2003-07-16 | 2005-02-03 | Telefonaktiebolaget L M Ericsson (Publ) | Seamless hand-off of mobile node to a wireless local area network (WLAN) |
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