CN104410526A - Call control method, Diameter protocol forwarding equipment and system - Google Patents
Call control method, Diameter protocol forwarding equipment and system Download PDFInfo
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- CN104410526A CN104410526A CN201410711840.9A CN201410711840A CN104410526A CN 104410526 A CN104410526 A CN 104410526A CN 201410711840 A CN201410711840 A CN 201410711840A CN 104410526 A CN104410526 A CN 104410526A
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Abstract
The embodiment of the invention discloses a call control method. The call control method comprises the steps that Diameter protocol forwarding equipment detects the working condition of a first policy and charging rules function (PCRF) unit adopted currently; if the first PCRF adopted currently breaks down, the Diameter protocol forwarding equipment sends a re-certification request to a universal gateway, so as to ensure that the universal gateway deactivates a user equipment UE routed to the first PCRF unit; the deactivated UE is online to a second PCRF unit according to an access request sent by the deactivated UE. The embodiment of the invention further discloses the Diameter protocol forwarding equipment and a system. By adopting the method, the equipment and the system, the switching cost between main and standby PCRFs can be reduced, the switching efficiency can be improved, and the normal call by users is guaranteed.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of calling-control method, Diameter forwarding unit and system.
Background technology
Based on speech business (the Voice over Long Term Evolution of Long Term Evolution, be called for short VoLTE) strategy under scene and charging rule functions (Policy and Charging Rules Function, be called for short PCRF) the geographical disaster tolerance of unit, because VOLTE must by Diameter forwarding unit (Diameter RoutingAgent, be called for short DRA) open subscriber equipment (User Equipment, be called for short UE) and the binding function of PCRF, after connecting DRA in the middle of Gx interface, universal gateway (Universal GateWay, be called for short UGW) cannot perception PCRF fault, standby (failover) mechanism cannot be triggered all users are switched to PCRF for subsequent use, if reached the standard grade in the meantime, the user of primary PCRF initiates VOLTE calling, then due to primary PCRF cannot be found and call failure, wherein Gx interface is positioned at PCRF and strategy and charge execution function (Policy and Charging Enforcement Function, be called for short PCEF) between, PCRF to be provided to PCEF by Gx interface or deletes business game rule, PCEF is reported to PCRF reported event by Gx interface.PCEF can be UGW.
In the prior art, by carrying out Gx interface backup between active and standby PCRF, all the elements of primary PCRF and Gx interface are backuped to PCRF for subsequent use.But need like this to increase a lot of hardware device, cost is very high, or can also DRA perception primary PCRF fault gravity treatment PCRF for subsequent use be passed through, by the time UGW sends diameter credit control update request (Credit Control Request-Upate, be called for short CCR-U) time, due to primary PCRF fault, and PCRF for subsequent use is without the session information of this UE, PCRF for subsequent use will trigger UE by the unknown session (Unknown-Session) of Gx interface error code and re-start packet data protocol (Packet Data Protocol, PDP) activate, thus realize the binding of UE and PCRF for subsequent use, complete again reaching the standard grade of UE, but before UGW triggers new CCR-U, UE cannot initiate VOLTE calling.
Summary of the invention
Embodiment of the present invention technical problem to be solved is, provides a kind of calling-control method, Diameter forwarding unit and system.The problem that standby usage PCRF switching surfaces is high, switching efficiency is low can be solved.
In order to solve the problems of the technologies described above, embodiment of the present invention first aspect provides a kind of calling-control method, comprising:
First strategy of the current use of Diameter forwarding device detecting and the working condition of charging rule functions unit PCRF;
If a PCRF of current use breaks down, then described Diameter forwarding unit sends again authentication request to universal gateway, will be routed to the user equipment (UE) deexcitation of a described PCRF to make described universal gateway; Wherein, described authentication request again comprises the UE information being routed to a described PCRF;
According to the access request that the UE of deexcitation sends, the UE of described deexcitation is reached the standard grade to described 2nd PCRF.
In the first possible implementation of first aspect, described Diameter forwarding unit sends again authentication request to universal gateway, will be routed to the user equipment (UE) deexcitation of a described PCRF to make described universal gateway; Comprise:
According to the UE quantity being routed to a described PCRF, send again authentication request to universal gateway, wherein, carry the UE quantity information of each deexcitation and the time interval information of deexcitation in described authentication request again, will the UE quantity information of UE by described each deexcitation and the time interval deexcitation of deexcitation of a described PCRF be routed to make described universal gateway.
In conjunction with the first possible implementation of first aspect, in the implementation that the second is possible, in described authentication request again, also comprise the information of session release cause.
In conjunction with the implementation that the second of first aspect is possible, in the implementation that the third is possible, the UE of described deexcitation reaches the standard grade to described 2nd PCRF by the access request that the described UE according to deexcitation sends, and comprising:
Receive the access request of UE transmission of described deexcitation at described universal gateway after, receive the diameter credit control update request that described universal gateway sends;
Described diameter credit control update request is forwarded to described 2nd PCRF to reach the standard grade to described 2nd PCRF to make the UE of described deexcitation.
In conjunction with first aspect or first or second or the third possible implementation in conjunction with first aspect, in the 4th kind of possible implementation, a PCRF of described current use breaks down, and comprising:
And the link failure between a described PCRF; Or
In Preset Time after sending any request message to a described PCRF, a described PCRF is without response.
Embodiment of the present invention second aspect provides a kind of Diameter forwarding unit, comprising:
Detecting unit, for detecting the first strategy and the working condition of charging rule functions unit PCRF of current use;
Transmitting element, if break down for a PCRF of current use, then sends again authentication request to universal gateway, will be routed to the user equipment (UE) deexcitation of a described PCRF to make described universal gateway; Wherein, described authentication request again comprises the UE information being routed to a described PCRF;
To reach the standard grade unit, for the access request sent according to the UE of deexcitation, the UE of described deexcitation is reached the standard grade to described 2nd PCRF.
In the first possible implementation of second aspect, described transmitting element specifically for:
According to the UE quantity being routed to a described PCRF, send again authentication request to universal gateway, wherein, carry the UE quantity information of each deexcitation and the time interval information of deexcitation in described authentication request again, will the UE quantity information of UE by described each deexcitation and the time interval deexcitation of deexcitation of a described PCRF be routed to make described universal gateway.
In conjunction with the first possible implementation of second aspect, in the implementation that the second is possible, in described authentication request again, also comprise the information of session release cause.
In conjunction with the implementation that the second of second aspect is possible, in the implementation that the third is possible, described in reach the standard grade unit specifically for:
Receive the access request of UE transmission of described deexcitation at described universal gateway after, receive the diameter credit control update request that described universal gateway sends;
Described diameter credit control update request is forwarded to described 2nd PCRF to reach the standard grade to described 2nd PCRF to make the UE of described deexcitation.
In conjunction with second aspect or first or second or the third possible implementation in conjunction with second aspect, in the 4th kind of possible implementation, described detecting unit detects that a PCRF of current use breaks down, and comprising:
Link failure between described Diameter forwarding unit and a described PCRF; Or
Described transmitting element sends in the Preset Time after any request message to a described PCRF, and a described PCRF is without response.
The embodiment of the present invention third aspect provides a kind of call control system, comprising:
Diameter forwarding unit as described in embodiment of the present invention second aspect or the arbitrary execution mode of second aspect;
One PCRF, for carrying out configuration and the management of strategy and charging rule functions to the calling of UE;
2nd PCRF, for when a described PCRF fault, carries out configuration and the management of strategy and charging rule functions to the calling of UE;
Universal gateway, for receiving the authentication request again that described Diameter forwarding unit sends, to the UE deexcitation of a described PCRF be routed to, and the access request that the UE receiving deexcitation sends, send credit control request to described Diameter forwarding unit;
Described UE, rolls off the production line from a described PCRF for the control according to described universal gateway, and sends access request, reaches the standard grade to described 2nd PCRF.
Implement the embodiment of the present invention, there is following beneficial effect:
When a PCRF fault being detected, initiatively send RAR message and will be routed to the UE deexcitation of a PCRF, UE is made to reach the standard grade to the 2nd PCRF after transmission access request, thus guarantee that VOLTE calling is normally carried out, without the need to increasing hardware device, reduce the cost that PCRF switches, and without the need to waiting for that UGW triggers new CCR-U, improve the efficiency that PCRF switches.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic flow sheet of a kind of calling-control method of the embodiment of the present invention;
Fig. 2 is the composition schematic diagram of the first embodiment of a kind of Diameter forwarding unit of the present invention;
Fig. 3 is the composition schematic diagram of the second embodiment of a kind of Diameter forwarding unit of the present invention;
Fig. 4 is the composition schematic diagram of a kind of call control system of the embodiment of the present invention;
Schematic flow sheet when Fig. 5 is the operation of call control system shown in Fig. 4.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Please refer to Fig. 1, is the schematic flow sheet of a kind of calling-control method of the embodiment of the present invention; In the present embodiment, described calling-control method comprises:
S101, the first strategy of the current use of Diameter forwarding device detecting and the working condition of charging rule functions unit PCRF.
Wherein, the working condition of a PCRF can be divided into normal and fault, and the reason of fault can be the hardware and software failure of a PCRF, also can be the link failure between DRA and a PCRF.
Therefore, alternatively, a PCRF of described current use breaks down, and comprising:
And the link failure between a described PCRF; Or
In Preset Time after sending any request message to a described PCRF, a described PCRF is without response.
S102, if a PCRF of current use breaks down, then described Diameter forwarding unit sends again authentication request (Re Auth Request is called for short RAR) and, to universal gateway, will be routed to the user equipment (UE) deexcitation of a described PCRF to make described universal gateway.
Wherein, described authentication request again comprises the UE information being routed to a described PCRF;
Alternatively, described transmission again authentication request to universal gateway, will the user equipment (UE) deexcitation of a described PCRF be routed to make described universal gateway; Comprise:
According to the UE quantity being routed to a described PCRF, send again authentication request to universal gateway, wherein, carry the UE quantity information of each deexcitation and the time interval information of deexcitation in described authentication request again, will the UE quantity information of UE by described each deexcitation and the time interval deexcitation of deexcitation of a described PCRF be routed to make described universal gateway.
Such as, the UE quantity being routed to a PCRF is 100, then, when a PCRF breaks down, DRA can send RAR message to UGW, and UGW herein implements the function of PCEF.DRA can indicate UGW to divide 5 each deexcitations 20 UE, 5 minutes each interval times, is unlikely to cause network congestion like this when UE reaches the standard grade the 2nd PCRF, thus improves the operating efficiency of network.Or can also roll off the production line a UE, every minor tick 2 minutes at every turn, concrete deexcitation quantity and the deexcitation time interval can set according to scene, are not limited in any way herein.Alternatively, the information of session release cause is also comprised in described authentication request again.It specifically can at session release cause property value to carrying.
S103, reaches the standard grade the UE of described deexcitation to described 2nd PCRF according to the access request that the UE of deexcitation sends.
Alternatively, specifically can comprise:
Receive the access request of UE transmission of described deexcitation at described universal gateway after, receive the diameter credit control update request (Credit control request update is called for short CCR-U) that described universal gateway sends;
Described diameter credit control update request is forwarded to described 2nd PCRF to reach the standard grade to described 2nd PCRF to make the UE of described deexcitation.
UE with deexcitation binds by the 2nd PCRF, and distributes dedicated bearing resource for it, thus when guaranteeing that this UE initiates VOLTE calling, session is successfully carried out.
It should be noted that, the quantity of the 2nd PCRF can be one or more, as long as the PCRF of current use breaks down, the method described in the present embodiment just can be used to carry out the switching of PCRF.
When a PCRF fault being detected, initiatively send RAR message and will be routed to the UE deexcitation of a PCRF, UE is made to reach the standard grade to the 2nd PCRF after transmission access request, thus guarantee that VOLTE calling is normally carried out, without the need to increasing hardware device, reduce the cost that PCRF switches, and without the need to waiting for that UGW triggers new CCR-U, improve the efficiency that PCRF switches; When UE deexcitation, use level and smooth mode deexcitation, the network congestion caused of reaching the standard grade in a large number the while of really avoiding UE, is beneficial to lifting network operating efficiency.
Please refer to Fig. 2, be the composition schematic diagram of the first embodiment of a kind of Diameter forwarding unit of the present invention, in the present embodiment, described Diameter forwarding unit comprises:
Detecting unit 100, for detecting the first strategy and the working condition of charging rule functions unit PCRF of current use;
Transmitting element 200, if break down for a PCRF of current use, then sends again authentication request to universal gateway, will be routed to the user equipment (UE) deexcitation of a described PCRF to make described universal gateway; Wherein, described authentication request again comprises the UE information being routed to a described PCRF;
To reach the standard grade unit 300, for the access request sent according to the UE of deexcitation, the UE of described deexcitation is reached the standard grade to described 2nd PCRF.
Described detecting unit 100 detects that a PCRF of current use breaks down, and comprising:
Link failure between described Diameter forwarding unit and a described PCRF; Or
Described transmitting element 200 sends in the Preset Time after any request message to a described PCRF, and a described PCRF is without response.
Alternatively, described transmitting element 200 specifically for:
According to the UE quantity being routed to a described PCRF, send again authentication request to universal gateway, wherein, carry the UE quantity information of each deexcitation and the time interval information of deexcitation in described authentication request again, will the UE quantity information of UE by described each deexcitation and the time interval deexcitation of deexcitation of a described PCRF be routed to make described universal gateway.
The information of session release cause is also comprised in described authentication request again.
Alternatively, reach the standard grade described in unit 300 specifically for:
Receive the access request of UE transmission of described deexcitation at described universal gateway after, receive the diameter credit control update request that described universal gateway sends;
Described diameter credit control update request is forwarded to described 2nd PCRF to reach the standard grade to described 2nd PCRF to make the UE of described deexcitation.
Please refer to Fig. 3, be the composition schematic diagram of the second embodiment of a kind of Diameter forwarding unit of the present invention, in the present embodiment, described Diameter forwarding unit comprises:
Input unit 400, output device 500, memory 600, processor 700 and bus, described input unit 400, output device 500, memory 600 and processor 700 are connected with described bus, wherein:
Described memory 600 is for storage program, and described processor 700 carries out following steps for calling described program:
Detect the first strategy of current use and the working condition of charging rule functions unit PCRF;
If a PCRF of current use breaks down, then send again authentication request to universal gateway, will the user equipment (UE) deexcitation of a described PCRF be routed to make described universal gateway;
According to the access request that the UE of deexcitation sends, the UE of described deexcitation is reached the standard grade to described 2nd PCRF.
Alternatively, described processor 700 can according to the UE quantity being routed to a described PCRF, send again authentication request to universal gateway, wherein, carry the UE quantity information of each deexcitation and the time interval information of deexcitation in described authentication request again, will the UE quantity information of UE by described each deexcitation and the time interval deexcitation of deexcitation of a described PCRF be routed to make described universal gateway.
The information of session release cause is also comprised in described authentication request again.
Alternatively, described processor 700 specifically for receive at described universal gateway described deexcitation UE send access request after, receive described universal gateway send diameter credit control update request;
Described diameter credit control update request is forwarded to described 2nd PCRF to reach the standard grade to described 2nd PCRF to make the UE of described deexcitation.
Please with reference to the composition schematic diagram that Fig. 4 and Fig. 5, Fig. 4 are a kind of call control system of the embodiment of the present invention, Fig. 5 is schematic flow sheet when call control system shown in Fig. 4 runs.
In the present embodiment, described call control system comprises:
Diameter forwarding unit 10 as shown in Figure 2;
One PCRF 20, for carrying out configuration and the management of strategy and charging rule functions to the calling of UE;
2nd PCRF 30, for when described PCRF 20 fault, carries out configuration and the management of strategy and charging rule functions to the calling of UE 50;
Universal gateway 40, for receiving the authentication request again that described Diameter forwarding unit sends, UE 50 deexcitation of a described PCRF 20 will be routed to, and the access request that the UE 50 forwarding deexcitation sends is to described Diameter forwarding unit;
Described UE 50, rolls off the production line from a described PCRF 20 for the control according to described universal gateway, and sends access request, reaches the standard grade to described 2nd PCRF 30.
As shown in Figure 5, the control flow of call control system is as follows:
The working condition of S501, Diameter forwarding device detecting the one PCRF.
S502, when a PCRF fault send RAR message to universal gateway.
S503, universal gateway will be routed to the UE deexcitation of a PCRF.
S504, UE send access request to universal gateway.
S505, universal gateway send CCR-U message to Diameter forwarding unit.
S506, Diameter forwarding unit forward CCR-U message to the 2nd PCRF, and UE is reached the standard grade to the 2nd PCRF.
Thus guarantee that follow-up VOLTE calling is normally carried out.
It should be noted that, each embodiment in this specification all adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiment, between each embodiment identical similar part mutually see.For device embodiment, due to itself and embodiment of the method basic simlarity, so description is fairly simple, relevant part illustrates see the part of embodiment of the method.
By the description of above-described embodiment, the present invention has the following advantages:
When a PCRF fault being detected, initiatively send RAR message and will be routed to the UE deexcitation of a PCRF, UE is made to reach the standard grade to the 2nd PCRF after transmission access request, thus guarantee that VOLTE calling is normally carried out, without the need to increasing hardware device, reduce the cost that PCRF switches, and without the need to waiting for that UGW triggers new CCR-U, improve the efficiency that PCRF switches; When UE deexcitation, use level and smooth mode deexcitation, the network congestion caused of reaching the standard grade in a large number the while of really avoiding UE, is beneficial to lifting network operating efficiency.
One of ordinary skill in the art will appreciate that all or part of flow process realized in above-described embodiment method, that the hardware that can carry out instruction relevant by computer program has come, described program can be stored in a computer read/write memory medium, this program, when performing, can comprise the flow process of the embodiment as above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory is called for short ROM) or random store-memory body (Random Access Memory is called for short RAM) etc.
Above disclosedly be only present pre-ferred embodiments, certainly can not limit the interest field of the present invention with this, therefore according to the equivalent variations that the claims in the present invention are done, still belong to the scope that the present invention is contained.
Claims (11)
1. a calling-control method, is characterized in that, comprising:
First strategy of the current use of Diameter forwarding device detecting and the working condition of charging rule functions unit PCRF;
If a PCRF of current use breaks down, then described Diameter forwarding unit sends again authentication request to universal gateway, will be routed to the user equipment (UE) deexcitation of a described PCRF to make described universal gateway; Wherein, described authentication request again comprises the UE information being routed to a described PCRF;
According to the access request that the UE of deexcitation sends, the UE of described deexcitation is reached the standard grade to described 2nd PCRF.
2. the calling-control method described in 1 as claimed in claim, it is characterized in that, described Diameter forwarding unit sends again authentication request to universal gateway, will be routed to the user equipment (UE) deexcitation of a described PCRF to make described universal gateway; Comprise:
Described DRA is according to the UE quantity being routed to a described PCRF, send again authentication request to universal gateway, wherein, carry the UE quantity information of each deexcitation and the time interval information of deexcitation in described authentication request again, will the UE quantity information of UE by described each deexcitation and the time interval deexcitation of deexcitation of a described PCRF be routed to make described universal gateway.
3. calling-control method as claimed in claim 2, is characterized in that, also comprise the information of session release cause in described authentication request again.
4. calling-control method as claimed in claim 3, it is characterized in that, the UE of described deexcitation reaches the standard grade to described 2nd PCRF by the access request that the described UE according to deexcitation sends, and comprising:
Receive the access request of UE transmission of described deexcitation at described universal gateway after, receive the diameter credit control update request that described universal gateway sends;
Described diameter credit control update request is forwarded to described 2nd PCRF to reach the standard grade to described 2nd PCRF to make the UE of described deexcitation.
5. as the calling-control method of any one of claim 1-4, it is characterized in that, a PCRF of described current use breaks down, and comprising:
And the link failure between a described PCRF; Or
In Preset Time after sending any request message to a described PCRF, a described PCRF is without response.
6. a Diameter forwarding unit, is characterized in that, comprising:
Detecting unit, for detecting the first strategy and the working condition of charging rule functions unit PCRF of current use;
Transmitting element, if break down for a PCRF of current use, then sends again authentication request to universal gateway, will be routed to the user equipment (UE) deexcitation of a described PCRF to make described universal gateway; Wherein, described authentication request again comprises the UE information being routed to a described PCRF;
To reach the standard grade unit, for the access request sent according to the UE of deexcitation, the UE of described deexcitation is reached the standard grade to described 2nd PCRF.
7. Diameter forwarding unit as claimed in claim 6, is characterized in that, described transmitting element specifically for:
According to the UE quantity being routed to a described PCRF, send again authentication request to universal gateway, wherein, carry the UE quantity information of each deexcitation and the time interval information of deexcitation in described authentication request again, will the UE quantity information of UE by described each deexcitation and the time interval deexcitation of deexcitation of a described PCRF be routed to make described universal gateway.
8. Diameter forwarding unit as claimed in claim 7, is characterized in that, also comprise the information of session release cause in described authentication request again.
9. Diameter forwarding unit as claimed in claim 8, is characterized in that, described in reach the standard grade unit specifically for:
Receive the access request of UE transmission of described deexcitation at described universal gateway after, receive the diameter credit control update request that described universal gateway sends;
Described diameter credit control update request is forwarded to described 2nd PCRF to reach the standard grade to described 2nd PCRF to make the UE of described deexcitation.
10. the Diameter forwarding unit as described in any one of claim 6-9, is characterized in that, described detecting unit detects that a PCRF of current use breaks down, and comprising:
Link failure between described Diameter forwarding unit and a described PCRF; Or
Described transmitting element sends in the Preset Time after any request message to a described PCRF, and a described PCRF is without response.
11. 1 kinds of call control systems, comprising:
Diameter forwarding unit as described in any one of claim 6-10;
One PCRF, for carrying out configuration and the management of strategy and charging rule functions to the calling of UE;
2nd PCRF, for when a described PCRF fault, carries out configuration and the management of strategy and charging rule functions to the calling of UE;
Universal gateway, for receiving the authentication request again that described Diameter forwarding unit sends, to the UE deexcitation of a described PCRF be routed to, and the access request that the UE receiving deexcitation sends, send credit control request to described Diameter forwarding unit;
Described UE, rolls off the production line from a described PCRF for the control according to described universal gateway, and sends access request, reaches the standard grade to described 2nd PCRF.
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| CN201410711840.9A CN104410526B (en) | 2014-11-28 | 2014-11-28 | A kind of calling-control method, Diameter forwarding unit and system |
| PCT/CN2015/094939 WO2016082710A1 (en) | 2014-11-28 | 2015-11-18 | Call control method, diameter protocol forwarding device, and system |
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| CN201410711840.9A CN104410526B (en) | 2014-11-28 | 2014-11-28 | A kind of calling-control method, Diameter forwarding unit and system |
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| WO2016082710A1 (en) * | 2014-11-28 | 2016-06-02 | 华为技术有限公司 | Call control method, diameter protocol forwarding device, and system |
| CN105517031B (en) * | 2015-12-07 | 2019-03-05 | 中国联合网络通信集团有限公司 | The method and device of business recovery after PCRF failure |
| CN105517031A (en) * | 2015-12-07 | 2016-04-20 | 中国联合网络通信集团有限公司 | Method and device for service restoration after PCRF (Policy and Charging Rules Function) fault |
| CN105515655A (en) * | 2016-01-18 | 2016-04-20 | 烽火通信科技股份有限公司 | Voice master and standby switching method based on SIP (Session Initiation Protocol) |
| CN105515655B (en) * | 2016-01-18 | 2018-02-16 | 烽火通信科技股份有限公司 | A kind of voice main and standby rearranging method based on Session Initiation Protocol |
| CN107155177A (en) * | 2016-03-02 | 2017-09-12 | 中国电信股份有限公司 | A kind of method, system and HSS for realizing VoLTE short message services |
| CN107155177B (en) * | 2016-03-02 | 2020-05-12 | 中国电信股份有限公司 | Method, system and HSS for realizing VoLTE short message service |
| CN108259327A (en) * | 2016-12-29 | 2018-07-06 | 中国移动通信集团河南有限公司 | VoLTE service restoration methods, system and device |
| CN108259327B (en) * | 2016-12-29 | 2020-11-06 | 中国移动通信集团河南有限公司 | VoLTE service recovery method, system and device |
| CN110650026A (en) * | 2018-06-26 | 2020-01-03 | 中国电信股份有限公司 | Communication method, system, PGW and computer readable storage medium |
| WO2020048532A1 (en) * | 2018-09-06 | 2020-03-12 | 中兴通讯股份有限公司 | Method and device for processing gx session exception |
| CN113038394A (en) * | 2021-05-20 | 2021-06-25 | 中兴通讯股份有限公司 | Session binding relationship processing method and device, electronic equipment and readable medium |
| CN113038394B (en) * | 2021-05-20 | 2021-10-19 | 中兴通讯股份有限公司 | Session binding relationship processing method and device, electronic equipment and readable medium |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2016082710A1 (en) | 2016-06-02 |
| CN104410526B (en) | 2018-09-21 |
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