CN101764810B - Negotiation method and system provided by cross-domain service - Google Patents
Negotiation method and system provided by cross-domain service Download PDFInfo
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Abstract
The invention relates to a negotiation method and a system provided by cross-domain service. The method is used to satisfy the need to provide cross-domain service among service platforms of cable operators, and concretely comprises negotiation on service supporting capability and negotiation on reserved resources. The negotiation on service-supporting capability comprises that: a session controller of a self domain receives a service request and forwards the service request to a session controller of an exotic domain which a service belongs to if judging the service is an exotic-domain service; the exotic domain gets a service-supporting capability list and corresponding service description information according to the service-supporting capability of a service server and network of the domain, and returns the list and the information to the session controller of the self domain; the session controller of the self domain decides that the capability with the fewest needed resources is a final service-supporting capability according to the intersection of the service-supporting capabilities of the self domain and the exotic domain, as well as the quantity of needed resources. During the negotiation on reserved resources, resource managers of the self domain and the exotic domain independently decide the amount of resource reservation according to relevant index parameters, and both the self domain and the exotic domain need to perform resource reservation.
Description
Technical field
The present invention relates to the service operation support technology field of television network broadcast, machinery of consultation and system that particularly a kind of cross-domain business provides.
Background technology
Development along with the network integration and information technology; Wired operator begins through making up open business platform its network capabilities of opening and professional ability; Support polytype terminal access mode; Business between the support operator is shared with cooperation provides personalized more business for the user, to improve the ability of its business support and operation.
Among the present invention, the territory refers to the management domain as differentiation with wired operator, does the net connection through MAN backbone network, province between the management domain.Among the present invention, the user that cross-domain business refers to belong to the business platform of local operator asks the business of the business platform of strange land operator, and the business platform of strange land operator needs the user of cross-domain business platform for local operator to provide professional.
The business platform of wired operator has difference significantly with respect to the business platform of telecom operators: the difference of (1) equity: the business platform of each telecom operators is shared unified core business Control Network; All the time in home network, carry out business control; Only the professional ability and the media information of user terminal are held consultation between each territory, do not need network capabilities that the access way of cross-domain business is held consultation; To the reserved resource of business, carry out final resource reservation policy by visited network all the time.And the business platform of each wired operator has independently Control Network; Not only need between each territory professional ability and media information are held consultation, also need the access way of the cross-domain business of network capabilities support to hold consultation; The resource reservation policy of negotiation all will be carried out in each territory.(2) isomerism of network: telecom operators adopt the unified network architecture, therefore support unified terminal and service access mode.And each wired operator is because the progress of the two-wayization network rebuilding is different with mode; Cause service access different (as: professional to VOD; The wired operator that has adopts the IPQAM mode to transmit; The operator that has adopts the mode of IP packet to transmit, and the operator that has all supports two kinds of load modes); Terminal access mode also there are differences (as: terminal of IP access style, the terminal of Cable access style etc.), and the isomerism of wired carrier network has also increased negotiation demand and the difficulty that cross-domain business provides.
The problem that the negotiation that the business platform of wired operator provides cross-domain business mainly faces comprises: (1) each business platform needs foundation is network configuration separately, and the service access mode and the terminal access mode of support carry out the negotiation that cross-domain business provides automatically; (2) satisfy the user to the end-to-end QoS requirement of business; (3) reducing cross-domain business provides the network capabilities that takies each operator resource, improves its resource utilization, cuts operating costs.Because the otherness of the business platform of the business platform of wired operator and telecom operators makes its negotiation that cross-domain business is provided can not indiscriminately imitate the method in the business platform of telecommunications fully.
At present, the business span-domain of still being unrealized between the business platform of wired operator, and the business platform of telecom operators mainly adopts the framework based on the IMS network, realizes unified business control.Negotiation flow process such as Fig. 1 of providing to cross-domain business have been provided in the IMS standard.The negotiation flow process of IMS regulation and stipulation mainly is the negotiation of media parameter ability between the user terminal.
IMS standard scheme is primarily aimed at the negotiation of calling and called terminal to the media parameter ability; And, terminal called returns error message when not supporting the professional ability of calling terminal or business support ability that the network entity on the session negotiation transmission path is not supported calling terminal; After calling terminal receives error message; Again carry out the business support ability consultation between the calling and called terminal, accomplish the session at this calling and called terminal.This method possibly need the repeatedly negotiation of business support ability to the foundation of a session; The time delay that can cause session to set up; Influence quality of the conversation and user experience; And business support ability only considered the coding parameter that the terminal is supported, do not consider the negotiation of the required service access mode of business support ability.Patent " a kind of method of carrying out the business support ability consultation " (patent No.: 200510083807) be directed against the repeatedly delay issue of business support ability consultation; When particularly PoC service being provided; Simplify the process that calling and called carry out business support ability consultation, reduce the time delay that session is set up.But the scheme of scheme that the IMS standard provides and patent " a kind of method of carrying out business support ability consultation " still is primarily aimed at the negotiation of calling and called terminal to the media parameter ability; Both sides carry out resource reservation to all still undetermined group media parameters in negotiations process; In the peak period of session negotiation, thereby cause excessive resource reservation to cause the session negotiation failure easily.
Therefore, the machinery of consultation that provides of existing cross-domain business can't be satisfied the demand that cross-domain business provides between the business platform of wired operator.
Summary of the invention
The objective of the invention is to the negotiation problem that provides for the cross-domain business that still is unrealized between the business platform that overcomes present wired operator, thereby the machinery of consultation and the system that provide a kind of cross-domain business to provide.
The present invention proposes the machinery of consultation that a kind of cross-domain business provides; This method is used to satisfy carries out cross-domain business between the business platform of wired operator and provides; The machinery of consultation that said cross-domain business provides specifically comprises the negotiation step of business support ability and the negotiation step of reserved resource:
The negotiation step of described business support ability specifically comprises following steps:
(1) after conversation controller received service request, judgement should business be that foreign lands are professional, then preserved service request, searched the affiliated territory of this business, and the conversation controller of the foreign lands under business is transmitted service request;
(2) conversation controller of foreign lands is received service request; Be judged as the business in this territory; Then, obtain the business support ability tabulation and the corresponding business descriptor in this territory, and return to the conversation controller in this territory according to this territory corresponding service server and network capabilities tenability to business;
(3) after this territory conversation controller receives the return information of foreign lands' conversation controller; Obtain terminal capability according to the terminal iidentification in the service request; Simultaneously search the service logic controller of corresponding service type, and send terminal ability information and service request to service controller according to the type of requested service; The service logic controller in this territory is according to terminal capability, and the network capabilities in this territory obtains the business support ability tabulation to such professional tenability, returns to conversation controller;
(4) conversation controller in this territory is got common factor to the business support ability tabulation in this territory with the business support ability tabulation that receives foreign lands;
(5) if there is the multiple business tenability in the business of asking; Then the conversation controller in this territory is through the resources left situation of explorer according to this territory; Resource reservation policy and business description information; Calculate every kind of required reserved resource of business support ability, and the minimum business support ability of decision-making resource requirement is final business support ability.
Described business support ability comprises: the media coding parameter set of the parameter set of service access mode, service access, support; Described business description information comprises: title, type of coding, bandwidth information, QoS describe, the time describes, receive parameter, Crypted password.
Described terminal ability information comprises: the media coding parameter of terminal type, access way, support, professional relevant application program.
Described resource information comprises: the frequency point information of bandwidth information, IPQAM, port.
The negotiation step of described reserved resource specifically comprises following steps:
(6) conversation controller in this territory is that final business support ability is reserved to the explorer request resource, after the success final professional ability and corresponding service descriptor thereof is sent to the conversation controller of foreign lands;
(7) conversation controller of foreign lands is according to receiving final business support ability and business description information, through the stock number in required this territory of explorer computing service; If there are enough resources in this territory; Then to the explorer request with submit resource reservation to, and return success to the conversation controller in this territory and to reply, the business that comprises business description information in replying receives parameter and Crypted password; Otherwise, return inadequate resource to the conversation controller in this territory and reply;
(8) conversation controller in this territory is received successful respond, submits reserved resource to; Otherwise, cancel current reserved resource, the business support ability of selecting resource requirement to take second place.
The invention allows for the negotiating system that a kind of cross-domain business provides; This system is used to realize to comprise the machinery of consultation that the cross-domain business of negotiation step of negotiation step and the reserved resource of business support ability provides; Satisfy that cross-domain business provides between the business platform of wired operator; It is characterized in that described device comprises:
Conversation controller, the terminal that is responsible for requested service provides session control, service request from user is sent to the service logic controller carry out service logic control, and the request resource manager is the resource reservation of the professional QoS that provides safeguard;
The service logic controller is responsible for the control of business processing logic;
Explorer is responsible for confirming according to service request availability, the execution admittance control of transmission resource, and carries out resource reservation to transmitting resource;
Service server is responsible for providing concrete business and professional control.
Set up and the interruption session based on Session Initiation Protocol between the said conversation controller.
The invention has the advantages that:
1, the machinery of consultation that has proposed cross-domain business and provide has solved the negotiation problem of the required business support ability of cross-domain business and resource reservation between the business platform of wired operator;
2, equity and the isomerism of network between wired Operator Specific Service platform supported in the machinery of consultation that provides of cross-domain business;
3, in the negotiation of business support ability, minimum according to the required reserved resource of business support ability, carry out final decision, optimized resource utilization;
4, in the negotiations process of resource reservation; Only the final business support ability of confirming is carried out resource reservation; And each territory carries out resource reservation according to its other resources allocation strategy, formulates resource allocation policy for business platform according to self Internet resources situation development space is provided.
Description of drawings
The negotiation flow chart of the media parameter ability that Fig. 1 existing IMS standard provides;
Fig. 2 the present invention is directed to the structure chart of the business platform of the consulting device that a kind of cross-domain business of wired operator provides;
The flow chart of the machinery of consultation that Fig. 3 a kind of cross-domain business of the present invention provides;
The deployment architecture figure of the business platform of wired operator among Fig. 4 embodiment;
Fig. 5 cross-domain on-demand business of the present invention provides the detailed negotiation flow chart of method.
Embodiment
In order to make the object of the invention, implementation method and advantage clearer,, the present invention is done further detailed description with specific embodiment and with reference to accompanying drawing.
In order to reach the object of the invention, the machinery of consultation that cross-domain business provides between the business platform of wired operator provided by the invention, business platform structure such as Fig. 2 of wired operator that said method relates to, wherein:
Conversation controller, the terminal that is responsible for requested service provides session control, service request from user is sent to the service logic controller carry out service logic control, and the request resource manager is the resource reservation of the professional QoS that provides safeguard.
The service logic controller is responsible for the control of business processing logic.
Explorer is responsible for confirming according to service request availability, the execution admittance control of transmission resource, and carries out resource reservation to transmitting resource.
Service server is responsible for providing concrete business and professional control.
Wherein, set up and the interruption session based on SIP between the conversation controller of wired Operator Specific Service platform.
The machinery of consultation that said cross-domain business provides comprises the negotiation of business support ability and two steps of negotiation of reserved resource, and is as shown in Figure 3:
Wherein, the business support ability consultation method comprises:
(1) after conversation controller received service request, judgement should business be that foreign lands are professional, then preserved service request, searched the affiliated territory of this business, and the conversation controller of the foreign lands under business is transmitted service request.
(2) conversation controller of foreign lands is received service request; Be judged as the business in this territory; Then, obtain the business support ability tabulation and the corresponding business descriptor in this territory, and return to the conversation controller in this territory according to this territory corresponding service server and network capabilities tenability to business.
Wherein, business support ability comprises: service access mode, the parameter set of service access, the media coding parameter set of support.Business description information comprises: title, and type of coding, bandwidth information, QoS describes, and the time describes, and receives parameter, Crypted password etc.
Wherein, the conversation controller of foreign lands returns in the business description information in this territory in step (2), does not comprise professional reception parameter and Crypted password information.
(3) after this territory conversation controller receives the return information of foreign lands' conversation controller; Obtain terminal capability according to the terminal iidentification in the service request; Simultaneously search the service logic controller of corresponding service type, and send terminal ability information and service request to service controller according to the type of requested service.The service logic controller in this territory is according to terminal capability, and the network capabilities in this territory obtains the business support ability tabulation to such professional tenability, returns to conversation controller.
Wherein, terminal ability information comprises: terminal type, access way, the media coding parameter of support, professional relevant application program etc.
(4) conversation controller in this territory is got common factor to the business support ability tabulation in this territory with the business support ability tabulation that receives foreign lands.
(5) if there is the multiple business tenability in the business of asking; Then the conversation controller in this territory is through the resources left situation of explorer according to this territory; Resource reservation policy and business description information; Calculate every kind of required reserved resource of business support ability, and the minimum business support ability of decision-making resource requirement is final business support ability.
Wherein, resource information comprises: bandwidth information, the frequency point information of IPQAM, port etc.
Through the negotiation of step (1)～(5) completion business support ability, then the final business support ability of confirming is carried out the negotiation of reserved resource.Wherein, the machinery of consultation of reserved resource comprises:
(6) conversation controller in this territory is that final business support ability is reserved to the explorer request resource, after the success final professional ability and corresponding service descriptor thereof is sent to the conversation controller of foreign lands.
(7) conversation controller of foreign lands is according to receiving final business support ability and business description information, through the stock number in required this territory of explorer computing service.If there are enough resources in this territory, then to the explorer request with submit resource reservation to, and return success to the conversation controller in this territory and to reply, the business that comprises business description information in replying receives parameter and Crypted password.Otherwise, return inadequate resource to the conversation controller in this territory and reply.
(8) conversation controller in this territory is received successful respond, submits reserved resource to.Otherwise, cancel current reserved resource, the business support ability of selecting resource requirement to take second place carries out step (5)～(7) again, up to realizing that successfully resource negotiation or all business support ability resource requirements all can't obtain to satisfy.
Accomplish the negotiations process of reserved resource through step (6)～(8).To successfully reserving the business of business support ability resource requirement amount, the conversation controller in this territory begins to carry out the business reception set-up procedure in this territory, and begins request through the conversation controller forwarding business of foreign lands.
In the negotiation flow process that said cross-domain business provides, session information need adopt unified describing mode, and this description can be adopted the SDP agreement of unified expansion, also can adopt the descriptor format of unified Definition.
The negotiation that is applied to carry out the cross-domain on-demand business between the business platform of wired operator and provides with the present invention below is that example describes.Fig. 4 is the deployment architecture figure of the business platform of wired operator among the embodiment, and the user in A territory uses the demand (telecommunication) service that the business platform in B territory provides among this embodiment.User terminal is in the A territory, and the terminal access style is that Cable inserts; The network capabilities in A territory provides dual mode to program request class business support ability: adopt the Media Stream of content distributing network CDN with the form transmission demand (telecommunication) service of IP packet, also support to adopt IPQAM to be modulated to the Media Stream that the RF signal form sends demand (telecommunication) service.Program request class service server is in the B territory, and the network capabilities in B territory can be CDN mode and IPQAM mode to program request class business support ability, and the demand (telecommunication) service server in B territory can only provide the medium load mode of CDN mode.
To the embodiment that above cross-domain on-demand business provides, the negotiation flow process that Fig. 5 provides for the cross-domain on-demand business, its concrete steps are:
(201) user terminal in A territory sends service request to the conversation controller in this territory.
(202) after the conversation controller in A territory receives service request, judge that this business is the program request class business in B territory, then preserves service request, and transmits service request to the conversation controller in B territory.
(203) transmit service request to the conversation controller in B territory.
(204) B territory conversation controller is received service request, searches the program request class service logic controller in B territory according to type of service, and tabulates to the business support ability in this territory of service logic controller request.
(205) the demand (telecommunication) service logic controller in B territory is according to the program request class service server in B territory and the network capabilities tenability to business; Obtain the business support ability tabulation in this territory; The business support tabulation comprises: based on the service access mode of CDN; The parameter set of service access, the media coding parameter set of support.The parameter set of service access comprises the access IP address of CDN, port numbers, Business Stream host-host protocol, Business Stream control protocol etc.
(206) the demand (telecommunication) service logic controller in B territory returns the business support ability tabulation to the conversation controller in B territory.
(207) conversation controller in B territory is to the demand (telecommunication) service server requests business description information in B territory.
(208) the demand (telecommunication) service server in B territory returns business description information, comprising: title, the type of coding of medium in the business, bandwidth information, QoS describes, time description etc.
(209) conversation controller in B territory returns business support ability tabulation and the corresponding business descriptor of B territory to this service request to the conversation controller in A territory.
(210) (user terminal is the terminal of Cable access style to the conversation controller in A territory in this example according to the acquisition of the terminal iidentification in service request ability of user terminal; Can only receive through IPQAM and be modulated to the Media Stream after the RF model), the business support ability tabulation to this territory of demand (telecommunication) service logic controller request in this territory.
(211) the program request class service logic controller in A territory is according to the network capabilities in this territory and the program request class business support ability tabulation in this territory of terminal capability decision-making.The information that business support ability comprises is: service access mode (like the CDN mode, the IPQAM mode), professional each parameter set that inserts, media coding type, code check etc.Wherein the service access parameter set has different parameter sets to different access waies.
(212) the program request class service logic controller in A territory returns the program request class business support ability tabulation in this territory to the conversation controller in A territory.
(213) conversation controller in A territory is got common factor to the business support ability tabulation in this territory with the business support ability tabulation that receives the B territory, and among this embodiment, the common factor of business support ability only comprises the business support ability of CDN mode service access type.If in this step, the common factor of business support ability tabulation is empty, and then the service request of refusing user's is no longer carried out following steps.
(214) conversation controller in A territory is to the calculating of the explorer request reserved resource in A territory, and the explorer in A territory calculates required reserved resource according to business support ability and business description information.
(215) explorer in A territory returns the business support ability resource needed to the conversation controller in this territory, comprises the frequency of IPQAM, bandwidth etc.
(216) to take the minimum business support ability of resource according to required stock number decision-making be final business support ability to the conversation controller in A territory.Among this embodiment, final business support ability is the business support ability of CDN mode service access type.
(217) conversation controller in A territory is reserved required resource to the explorer request in this territory.
(218) conversation controller in A territory sends final business support ability and business description information to the conversation controller in B territory.
(219) conversation controller in B territory is to the required resource of explorer request computing service in B territory, and request and submit professional required resource reservation to.
(220) after the resource reservation success, the conversation controller in B territory is replied the resource reservation success response to the conversation controller in A territory, and increases professional parameter and the Crypted password information of receiving in business description information.In this step; If the resource reservation in B territory failure; Then the conversation controller in B territory is replied the resource reservation failure response to the conversation controller in A territory, and the conversation controller in A territory need select the business support ability that the resource occupation amount is taken second place in the business support ability tabulation to restart step (216)～(220).
(221) conversation controller in A territory is submitted the reserved resource in A territory to.
So far, accomplish the negotiation that cross-domain business provides between the business platform in the business platform in A territory and B territory.The conversation controller in A territory coordinates to accomplish the business reception set-up procedure in this territory; Be in this embodiment: the conversation controller of A number sends to the IP address of IPQAM, udp port the CDN node in A territory; The information such as frequency of IPQAM are sent to user terminal; And with the CDN IP addresses of nodes of the reception B territory demand (telecommunication) service Media Stream in A territory, port number information sends to B territory conversation controller.The conversation controller in A territory begins request to the conversation controller transmission business in B territory.The conversation controller in B territory coordinates to accomplish the professional transport process in B territory; Position in this embodiment: B territory conversation controller is transmitted to program request class service logic controller control program request service server and sends Media Stream to A territory corresponding C DN node, and this moment, the CDN node in A territory sent Media Stream to the IPQAM in this territory.
Present embodiment is that example describes with the negotiation of carrying out the cross-domain on-demand business between the business platform that is applied to wired operator and providing, and also can be applied to the negotiation that the cross-domain business of other types provides.
It should be noted last that above embodiment is only unrestricted in order to technical scheme of the present invention to be described.Although the present invention is specified with reference to embodiment; Those of ordinary skill in the art is to be understood that; Technical scheme of the present invention is made amendment or is equal to replacement, do not break away from the spirit and the scope of technical scheme of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (6)
1. machinery of consultation that cross-domain business provides; This method is used to satisfy carries out cross-domain business between the business platform of wired operator and provides; The machinery of consultation that said cross-domain business provides specifically comprises the negotiation step of business support ability and the negotiation step of reserved resource:
The negotiation step of described business support ability specifically comprises following steps:
(1) after conversation controller received service request, judgement should business be that foreign lands are professional, then preserved service request, searched the affiliated territory of this business, and the conversation controller of the foreign lands under business is transmitted service request;
(2) conversation controller of foreign lands is received service request; Be judged as the business in this territory; Then, obtain the business support ability tabulation and the corresponding business descriptor in this territory, and return to the conversation controller in this territory according to this territory corresponding service server and network capabilities tenability to business;
(3) after this territory conversation controller receives the return information of foreign lands' conversation controller; Obtain terminal capability according to the terminal iidentification in the service request; Simultaneously search the service logic controller of corresponding service type, and send terminal ability information and service request to the service logic controller according to the type of requested service; The service logic controller in this territory is according to terminal capability, and the network capabilities in this territory obtains the business support ability tabulation to such professional tenability, returns to conversation controller;
(4) conversation controller in this territory is got common factor to the business support ability tabulation in this territory with the business support ability tabulation that receives foreign lands;
(5) if there is the multiple business tenability in the business of asking; Then the conversation controller in this territory is through the resources left situation of explorer according to this territory; Resource reservation policy and business description information; Calculate every kind of required reserved resource of business support ability, and the minimum business support ability of decision-making resource requirement is final business support ability.
2. the machinery of consultation that cross-domain business according to claim 1 provides is characterized in that, described business support ability comprises: the media coding parameter set of the parameter set of service access mode, service access, support; Described business description information comprises: title, type of coding, bandwidth information, QoS describe, the time describes, receive parameter and Crypted password.
3. the machinery of consultation that cross-domain business according to claim 1 provides is characterized in that terminal ability information comprises: the media coding parameter of terminal type, access way, support and professional relevant application program.
4. the machinery of consultation that cross-domain business according to claim 1 provides is characterized in that, described resource information comprises: the frequency point information of bandwidth information, IPQAM and port.
5. the machinery of consultation that cross-domain business according to claim 1 provides is characterized in that, the negotiation step of described reserved resource specifically comprises following steps:
(6) conversation controller in this territory is that final business support ability is reserved to the explorer request resource, after the success final business support ability and corresponding service descriptor thereof is sent to the conversation controller of foreign lands;
(7) conversation controller of foreign lands is according to receiving final business support ability and business description information, through the stock number in required this territory of explorer computing service; If there are enough resources in this territory; Then to the explorer request with submit resource reservation to, and return success to the conversation controller in this territory and to reply, the business that comprises business description information in replying receives parameter and Crypted password; Otherwise, return inadequate resource to the conversation controller in this territory and reply;
(8) conversation controller in this territory is received successful respond, submits reserved resource to; Otherwise, cancel current reserved resource, the business support ability of selecting resource requirement to take second place.
6. negotiating system that cross-domain business provides; This system is used to realize the machinery of consultation that the cross-domain business of the negotiation step of negotiation step that comprises business support ability according to claim 1 and reserved resource provides; Satisfy that cross-domain business provides between the business platform of wired operator; It is characterized in that described system comprises:
Conversation controller, the terminal that is responsible for requested service provides session control, service request from user is sent to the service logic controller carry out service logic control, and the request resource manager is the resource reservation of the professional QoS that provides safeguard;
The service logic controller is responsible for the control of business processing logic;
Explorer is responsible for confirming according to service request availability, the execution admittance control of transmission resource, and carries out resource reservation to transmitting resource;
Service server is responsible for providing concrete business and professional control.
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| CN103582025B (en) * | 2012-08-07 | 2017-04-12 | 中国电信股份有限公司 | resource reservation method and system |
| CN104410917A (en) * | 2014-09-16 | 2015-03-11 | 东方有线网络有限公司 | Realization method for cable interactive television cross-domain video service connection system |
| CN105791167B (en) * | 2014-12-25 | 2019-01-25 | 华为技术有限公司 | A kind of method for obligating resource, device and system |
| CN107135103B (en) | 2017-05-08 | 2021-03-19 | 网宿科技股份有限公司 | Method and system for constructing content distribution network platform on heterogeneous resources |
| CN111769972A (en) * | 2020-05-29 | 2020-10-13 | 深圳市风云实业有限公司 | Resource dynamic allocation method based on cross-domain data exchange |
| CN112867068A (en) * | 2021-01-22 | 2021-05-28 | 广东以诺通讯有限公司 | Method for selecting service data channel in IMS (IP multimedia subsystem) call under 5G NSA (network spanning tree) network |
| CN115150341B (en) * | 2022-07-15 | 2023-09-29 | 中国联合网络通信集团有限公司 | Resource reservation method, device and storage medium |
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