CN101286951B - Session preemption method - Google Patents
Session preemption method Download PDFInfo
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- CN101286951B CN101286951B CN2007100911550A CN200710091155A CN101286951B CN 101286951 B CN101286951 B CN 101286951B CN 2007100911550 A CN2007100911550 A CN 2007100911550A CN 200710091155 A CN200710091155 A CN 200710091155A CN 101286951 B CN101286951 B CN 101286951B
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Abstract
The invention relates to a conversation preemption method which comprises the steps that: a device of a preemption party starts up a calling to the device of a conversation transfer party; an application server of the conversation transfer party judges whether the calling is in accordance with a preemption strategy, if so, the conversation of the device of a conversation transferred party is updated and the calling of the device of the preemption party is responded; finally the conversation connection between the device of the preemption party and the device of the conversation transferred party is realized. The technical proposal of the method of the invention can ensure that users can preempt the existed conversation by using another device or preempt the conversation with calling intention by using another device directly when the call is not answered.
Description
Technical field
The present invention relates to the communications field, relate more specifically to a kind of session preemption method.
Background technology
IP (network interconnection agreement; Internet Protocol is called for short IP) IP multimedia subsystem, IMS (IP MultimediaCore Network Subsystem is called for short IMS) is by third generation partner program (3rd GenerationPartnership Project; Abbreviation 3GPP) a kind of IP-based network framework that proposes; Made up one opening and service environment flexibly, supporting multimedia application can provide abundant multimedia service for the user.
In the IMS business system, key-course separates with operation layer, and key-course does not provide concrete business, and functions such as necessary triggering, route, charging only are provided to operation layer.Service trigger and controlled function are that (Call Session Control Function is called for short CSCF to CSCF, is divided into Proxy in the key-course; Three types of Interrogating and Serving, that wherein take the main responsibility is Serving; The Interrogating type is optional) completion; Operation layer is to be made up of a series of application servers (Application Server is called for short AS), and concrete business service can be provided; AS can be an independent entity, also may reside among the S-CSCF.Key-course (S-CSCF) calls the business on the AS according to user's CAMEL-Subscription-Information control service trigger, realizes business function.End-to-end equipment in the session is called user equipment (UE) (User Equipment), is responsible for mutual with the user.These functional entitys use SIP (Session Initiation Protocol) agreement communication.
This business relates to the three parts, comprises before business takes place setting up session or setting up two sides and the third party side of seizing of session.From the angle that session is shifted, can think that also the side of seizing is that session diverts the aim, and the professional side that back disengaging session takes place is called the session transfer party, promptly by the side of seizing, the opposing party is exactly the session side of being transferred.Represent that in order to simplify flow process outstanding actual business control function body has all omitted the CSCF entity and do not participated in this professional AS entity in all flow charts of this paper, these entities are the just simple message of transmitting in this business.Message that dotted arrow is represented is needs under certain condition.
In some cases, the user possibly want to use another kind of equipment to seize existing conversation, or when being called out, under the situation of not answering, directly uses another equipment to seize the conversation of caller intention; Such as following scenario:
Scene 1: the user is using a certain equipment conversation that falls behind, yet the user has advanced equipment, does not support video such as existing equipment, or the resolution of video is lower etc., and this moment, the user wanted to use sophisticated equipment to continue conversation.
Scene 2: the user is using the landline telephone conversation in family or the office, and the busy urgent need of user's this moment is gone out, so want to use mobile phone to continue current conversation.Otherwise or the user is just using mobile phone calling, in having gone back home this moment or in the office, based on the consideration of signal quality, expense etc., wants to use landline telephone to continue current conversation.In this scene, the user also possibly just receive calling, does not accomplish switching again but do not think to answer earlier, and thinks directly to use other equipment to accomplish conversation.
In the prior art as in the draft of RFC a business---session is picked up; Can realize the conversation of ongoing conversation and intention is transferred; Fig. 1 be do not use when acting on behalf of should business basic messae flow process figure, Fig. 2 be to use when acting on behalf of should business basic messae flow process figure.
Do not use when acting on behalf of, this business is by the control of transfer party terminal, and its step is following:
101, the A-B session between UE-A and UE-B has been set up or UE-A is waiting for that UE-B replys.
102, UE-B is given in SUBSCRIBE (subscription) request of UE-C transmission Session Initiation Protocol, asks a Dialog (session) incident, the session information of inquiring ongoing UE-B.
103, UE-B receives inquiry back response OK.
104, UE-B sends NOTIFY (notice) message and gives UE-C, informs the information of ongoing session.
105, OK is responded in the notified back of UE-C.
106, the UE-C information of giving according to NOTIFY is initiated the more calling of new session by normal process to UE-A, and after session was set up, UE-A stopped the communication with UE-B, promptly stops A-B session or the cancellation calling to UE-B.
When use was acted on behalf of, this business was by agency's control, and its step is following:
201, the A-B session between UE-A and UE-B has been set up or UE-A is waiting for that UE-B replys.
202, the INVITE of UE-C transmission Session Initiation Protocol asks to the agency, thereby is initiated to agency's calling, the address of having carried UE-B in the call information.
203, the SUBSCRIBE of agency's transmission Session Initiation Protocol asks to UE-B, asks a Dialog incident, the session information of inquiring ongoing UE-B.
204, UE-B receives inquiry back response OK.
205, UE-B sends NOTIFY to the agency, informs the information of ongoing session.
206, OK is responded in the notified back of agency.
207, the agency presses normal process, acts on behalf of UE-C and initiates the more calling of new session to UE-A, and finally set up the C-A session, and after session was set up, UE-A stopped the communication with UE-B.
But there is following weak point in this session pickup technology: than higher, not all UE supports the Dialog incident to the requirement of UE, relatively backward equipment, and the operability of SUBSCRIBE request is not strong yet, is unfavorable for extensively carrying out new business; The user must know agent address, and is to the situation of professional cross operator, more unrealistic.
Summary of the invention
The technical problem that the present invention will solve is: for solving the user in some cases, want to use another kind of equipment to seize existing conversation, or when being called out, under the situation of not answering, directly use another equipment to seize the conversation of caller intention.
For solving this technical problem, the present invention provides a kind of session preemption method, comprising:
(1) seizes the calling that method, apparatus is initiated to session transfer party equipment;
(2) judged by the application server of the side of seizing (being the session transfer party) whether said calling meets preemptive policy; If meet then carry out session is transferred the session updates of method, apparatus and to seizing replying that method, apparatus calls out, and finally realize seizing method, apparatus and session is transferred the session connection between method, apparatus.
Further, said preemptive policy be below a kind of or its combination in any in several kinds:
(a) definition service feature sign indicating number;
(b) definition session transfer party equipment seizes group;
(c) service security information is set.
Further, when adopting preemptive policy (a), judge in the said step (2) that said calling is
Not meeting preemptive policy is meant: whether carried the service feature sign indicating number in the calling of the judgement side of seizing.
Further, when adopting preemptive policy (b), judges whether said calling meets preemptive policy and be meant in the said step (2): whether the judgement side of seizing is in seizing group.
Further, when adopting preemptive policy (c), judge whether said calling meets preemptive policy and be meant in the said step (2): judge whether contain correct security information in the said call information.
Further, in the said step (2): undertaken session is transferred the session updates of method, apparatus and to seizing replying that method, apparatus calls out by the application server of session transfer party, and finally realize seizing method, apparatus and session is transferred the session connection between method, apparatus.
Further, said step (1) is preceding also to be comprised: be user device configuration session preemption business, and the configuration preemption strategy.
Further, said step also comprises after (2): the communication termination of session side of being transferred and session transfer party, or the application server of session transfer party is hung up the session of session transfer party.
Further, the session side of being transferred stops being meant termination meeting between the two with the communication of session transfer party
Words or cancellation are to the calling of session transfer party
Further, this method does not receive session to be transferred other main restrictions of exhaling business of equipment or session transfer equipment.
Further, this method is used for IP Multimedia System.
After having adopted technical scheme of the present invention, can make the user use another equipment to seize existing conversation, or when not answering, directly use another equipment to seize the conversation of caller intention.
Description of drawings
Fig. 1 does not use the message flow chart when acting on behalf of for existing " session is picked up " is professional;
Fig. 2 uses the message flow chart when acting on behalf of for existing " session is picked up " is professional;
Fig. 3 seizes message flow chart for conversation of the present invention;
Fig. 4 is a call seizing message flow chart of the present invention;
Embodiment
To combine accompanying drawing and embodiment that technical scheme of the present invention is explained in more detail below.
The present invention mainly may further comprise the steps:
(1) initial configuration is seized business for user terminal (such as UE-B) configuration session on application server, and disposes certain preemptive policy;
(2) want the conversation of seizing B equipment among the session A-B to be about to B equipment as the user as the session transfer party with the side of seizing C equipment; As the session side of being transferred, then use C equipment to be initiated to the calling of B equipment A equipment.
The application server of (3) session transfer party B equipment is according to preemptive policy; To meeting the calling of strategy---i.e. the side's of seizing calling of being allowed to seize; Accomplish to the session updates of the session side of being transferred A equipment with to the replying of the side of seizing C device call by it, make and set up session connection between A-C; After session was set up, the application server of session transfer party B equipment stopped the session of B end---and promptly stop A-B session or cancellation calling, perhaps hang up the session of B end UE-B.
Further, can be configured to down several kinds of preemptive policies, but be not limited to these several kinds strategies for the user.Also but combination in any is used these several kinds and other strategy.
(1) definition service feature sign indicating number is if carried the service feature sign indicating number then be allowed to seize in the calling of the side of seizing.
(2) group of seizing of definition session transfer party equipment limits the conversation which equipment can be seized this equipment; If the side of seizing is in seizing group, then be allowed to seize.
(3) service security information is set, if contain correct security information (such as direct encrypted code information behind Subscriber Number of when dialing) in the call information, then AS directly initiates to upgrade other end user---and be the request of the session side of being transferred session.If do not have security information or security information incorrect in the call information, AS can notify UE security information to be sent up again, if security information is correct, then continues professional.
Further, said method also can comprise following characteristics: do not receive session be transferred/or other of session transfer equipment are main exhales professional restrictions, like long-distance caller restriction.
Further, said method also can comprise following characteristics: this method is used for but is not limited to IP Multimedia System.
Further specify the present invention with two application examples below; Wherein all flow processs all are to have disposed the preemptive policy that the business of seizing and use be provided with service security information with UE-B to describe.
First application example, Fig. 3 are that message flow chart is seized in conversation of the present invention, have described at UE-A and UE-B conversation and have carried out in the process, and the user uses another equipment UE-C to seize the process of the ongoing conversation of equipment UE-B.
301, set up session between UE-A and UE-B.
302, UE-C uses INVITE request in the Session Initiation Protocol to be initiated to the calling of UE-B, and portability security information wherein is such as in the To territory, encrypted message being provided.
303, message travels AS-B, AS-B judges in the calling whether carried correct security information, then changes step 307 in this way over to, otherwise carries out 304.
304, AS-B inquires security information to UE-C, such as responding " 401 Unauthorized ".
305, UE-C collects security information, obtains such as importing through the user.
306, UE-C sends INVITE once more, has carried security information.
307, AS-B request UE-A changes existing medium stream information, such as send the Re-INVITE request to UE-A, can use the P-Service-Indication territory to inform that UE-A is the renewal that " seizing " business causes.Will be between AS-B and the UE-C according to the more renewal of new technological process completion Media Stream of medium of standard.
308, UE-A notice AS-B medium upgrade and accomplish, such as responding " 200OK ".
309, AS-B is finally to the UE-C answering call, such as responding " 200OK (Answer) ".
310, the session between UE-A and UE-C is set up and is accomplished, and can converse between A and the C.
311, AS-B notice UE-B is hung up, such as sending BYE message to UE-B.
312, UE-B notice AS-B is hung up success, such as responding " 200OK ".
Second application example, Fig. 4 are call seizing message flow chart of the present invention, have described when UE-A calls out UE-B, and the user uses another equipment UE-C to seize the process of conversation of the intention of UE-B.
401, UE-A calls out UE-B, and waits for that UE-B replys.
402, UE-C uses INVITE request in the Session Initiation Protocol to be initiated to the calling of UE-B, and portability security information wherein is such as in the To territory, encrypted message being provided.
403, message approach AS-B, AS-B judges in the calling whether carried correct security information, then changes step 407 in this way over to, otherwise carries out 404.
404, AS-B inquires security information to UE-C, such as responding " 401 Unauthorized ".
405, UE-C collects security information, obtains such as importing through the user.
406, UE-C sends INVITE once more, has carried security information.
407, AS-B notices that UE-B is in dont answer state still, and cancellation makes UE-B stop jingle bell to the calling of UE-B, gives UE-B such as sending CANCEL.
408, AS-B receives that UE-B stops the response of jingle bell, such as " 200OK ".
409, AS-B notice UE-A changes existing medium stream information, such as sending UPDATE message.Will be between AS-B and the UE-A according to the more renewal of new technological process completion Media Stream of medium of standard.
410, UE-A notice AS-B medium upgrade and accomplish, such as responding " 200OK ".
411, AS-B finally replys the calling of UE-C, such as responding " 200OK (Answer) ".
412, the session between UE-A and UE-C is set up and is accomplished, and can converse between A and the C.
Certainly; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof; Those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (10)
1. session preemption method comprises:
(1) seizes the calling that method, apparatus is initiated to session transfer party equipment;
The application server of (2) session transfer party judges whether said calling meets preemptive policy; If meet then carry out session is transferred the session updates of method, apparatus and to seizing replying that method, apparatus calls out, and finally realize seizing method, apparatus and session is transferred the session connection between method, apparatus;
In the said step (2): undertaken session is transferred the session updates of method, apparatus and to seizing replying that method, apparatus calls out by the application server of session transfer party, and finally realize seizing method, apparatus and session is transferred the session connection between method, apparatus.
2. session preemption method as claimed in claim 1 is characterized in that, said preemptive policy be below a kind of or its combination in any in several kinds:
(a) definition service feature sign indicating number;
(b) definition session transfer party equipment seizes group;
(c) service security information is set.
3. session preemption method as claimed in claim 2 is characterized in that, when adopting preemptive policy (a), judges whether said calling meets preemptive policy and be meant in the said step (2): whether carried the service feature sign indicating number in the calling of the judgement side of seizing.
4. session preemption method as claimed in claim 2 is characterized in that, when adopting preemptive policy (b), judges whether said calling meets preemptive policy and be meant in the said step (2): whether the judgement side of seizing is in seizing group.
5. session preemption method as claimed in claim 2 is characterized in that, when adopting preemptive policy (c), judges whether said calling meets preemptive policy and be meant in the said step (2): judge whether contain correct security information in the said call information.
6. session preemption method as claimed in claim 1 is characterized in that, said step (1) is preceding also to be comprised: be user device configuration session preemption business, and the configuration preemption strategy.
7. session preemption method as claimed in claim 1 is characterized in that, said step also comprises after (2): the communication termination of session side of being transferred and session transfer party, or the application server of session transfer party is hung up the session of session transfer party.
8. session preemption method as claimed in claim 7 is characterized in that: the session side of being transferred stops communication with the session transfer party and is meant the calling of termination session or cancellation between the two to the session transfer party.
9. the method for claim 1 is characterized in that: this method does not receive session to be transferred that other of equipment or session transfer equipment are main exhales professional restrictions.
10. the method for claim 1, it is characterized in that: this method is used for IP Multimedia System.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100911550A CN101286951B (en) | 2007-04-10 | 2007-04-10 | Session preemption method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100911550A CN101286951B (en) | 2007-04-10 | 2007-04-10 | Session preemption method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101286951A CN101286951A (en) | 2008-10-15 |
| CN101286951B true CN101286951B (en) | 2012-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100911550A Expired - Fee Related CN101286951B (en) | 2007-04-10 | 2007-04-10 | Session preemption method |
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| CN (1) | CN101286951B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109816199B (en) * | 2018-12-14 | 2023-09-22 | 深圳平安医疗健康科技服务有限公司 | Work task processing method and device, server and computer readable storage medium |
| CN112968998A (en) * | 2021-02-10 | 2021-06-15 | 联想(北京)有限公司 | Communication processing method and electronic device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1780422A (en) * | 2004-11-23 | 2006-05-31 | 华为技术有限公司 | Preemption for group calling service in group telecommunication |
| CN1852127A (en) * | 2005-04-22 | 2006-10-25 | 阿尔卡特公司 | System and method for providing hotline and preemption features using presence and preference information |
-
2007
- 2007-04-10 CN CN2007100911550A patent/CN101286951B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1780422A (en) * | 2004-11-23 | 2006-05-31 | 华为技术有限公司 | Preemption for group calling service in group telecommunication |
| CN1852127A (en) * | 2005-04-22 | 2006-10-25 | 阿尔卡特公司 | System and method for providing hotline and preemption features using presence and preference information |
Non-Patent Citations (1)
| Title |
|---|
| Johnston, et al..Session Initiation Protocol Service Examples.http://tools.ietf.org/html/draft-ietf-sipping-service-examples-12.2007,1,131-140. * |
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| Publication number | Publication date |
|---|---|
| CN101286951A (en) | 2008-10-15 |
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