WO2008071126A1

WO2008071126A1 - Detecting method and device of loadbearing status as well as distributing method and system of loadbearing resource

Info

Publication number: WO2008071126A1
Application number: PCT/CN2007/071222
Authority: WO
Inventors: Youjun Chen
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2006-12-15
Filing date: 2007-12-12
Publication date: 2008-06-19
Also published as: CN101005410A

Abstract

A detecting method and device of load bearing state as well as a distributing method and system of load bearing resource are disclosed. The distributing method of load bearing resource includes the following steps: accounting the status message of the load bearing resource between each media gateway and each business access equipment; distributing the load bearing resource for the business call according to the status message of the load bearing resource.

Description

The present invention claims to be submitted to the Chinese Patent Office on December 15, 2006, and the application number is 200610124231.9, and the invention name is "a bearer state detection method and device and bearer resources". The priority of the Chinese Patent Application, the entire disclosure of which is incorporated herein by reference.

Technical field

The present invention relates to the field of softswitch communication, and in particular, to a bearer state detection method and apparatus, and a bearer resource allocation method and system.

Background technique

NGN is the abbreviation of "Next Generation Network". It is based on packet network and softswitch as the core. It can provide multimedia integrated services such as voice, video and data. It adopts an open, standard architecture and can provide rich services. Next generation network. It is a milestone in the history of telecommunications development, marking the arrival of the era of the new generation of telecommunications networks. From the perspective of development, NGN is gradually moving from the traditional circuit switched public switched telephone network (PSTN) to packet switching, which carries all the services of the original PSTN network. , offloading a large amount of data transmission to the Internet Protocol (IP) network to alleviate the heavy load of the PSTN network, and adding and enhancing many new and old services with the new features of IP technology.

NGN is a comprehensive network. From a functional point of view, we can divide it into four layers: business layer, control layer, transport layer and access layer. among them:

Access layer: Supports multimedia services and user access.

Transport layer: Using packet technology to provide an integrated delivery platform.

Control layer: is the control core of the softswitch system. Complete functions such as multimedia call and service control. Business layer: Provides various value-added services, multimedia services and third-party services.

An important feature of the NGN network is the separation of bearer and control, that is, the transport layer's bearer to the service and the control layer's call control to the service are independent of each other. In networks that did not have such characteristics in the early days, for example, in the early mobile communication systems, the connection between the base station controller (BSC) and other devices and the Mobile-services Switching Centre (MSC) was One-to-one, that is, one BSC can only be controlled by a single MSC; after adopting a architecture with separate bearer and control, for example, in an NGN network, one access device on the access network side can connect multiple Multiple Media Gateway devices (MGWs) under the control of the Media Gateway Controller (MGC). According to different signaling processing modes, the MGC and the MGW can have the following two typical networking modes:

The MGW has no built-in signaling gateway, as shown in Figure 1.

The MGW has a built-in signaling gateway, as shown in Figure 2.

An access device on the access network side can be connected to multiple MGWs under the control of the MGC to provide backup capabilities at the MGC level and the MGW level. The MGC can flexibly control the call on the MGW. Distribution to achieve equalization of traffic within the MGC control area.

However, in the process of implementing the present invention, the inventor found that in the actual networking application, if the bearer link between the MGW and the access network side device fails or is congested in the above-mentioned networking model, Beck! There are some problems. The ITU-T (International Telecommunication Union-Telecommunication work task) media gateway control H.248 protocol defines an ephemeral type of resource, for example, ATM in the MGW (Asynchronous Transfer Mode, asynchronous The transfer mode or the bearer resource such as IP belongs to this type of resource; for this type of resource, the MGC cannot know the global bearer status between the MGW and the access network side device. FIG. 3 is a typical networking model diagram, in which the bearer between the MGW and the access network side device is an ATM or IP bearer resource, and the corresponding resource end type in the MGW view is defined by the ITU-T H.248 protocol. Ephemeral type. For example, in the application process, the bearer resource between the MGW1 and the access network side device has one of most faults, most of which have been used, all faults, or all of the medium anomalies, and the MGW2 and the access network. When the bearer resources between the side devices are idle and available, the MGC cannot use the normal call distribution policy and the call is still evenly distributed to the MGC because the MGC cannot learn the abnormality of the bearer resources between the MGW1 and the access network device. MGW1 and MGW2. Obviously, this is not conducive to the reasonable configuration of the call on the bearer resources, affecting the utilization of resources, and affecting the reliability of the service call.

Summary of the invention

The present invention provides a method and a device for detecting a bearer state and a method and system for allocating a resource. The resource control device adjusts the call allocation policy according to the state of the resource carried between the MGW and the access network device. Assign bearer resources.

The invention discloses a bearer state detecting method, which comprises: detecting and correlating with a softswitch network device The bearer quality of the service flow corresponding to the connected device; determining the bearer resource status between the softswitch network device and the associated device according to the bearer quality of the service flow.

The invention also discloses a bearer state detecting device, comprising: a detecting unit, configured to detect a bearer quality of a service flow corresponding to a device associated with a device where the device is located; and a determining unit, configured to detect according to the detecting unit The bearer quality of the incoming traffic flow determines the state of the bearer resources between the device in which the device is located and the associated device.

The invention also discloses a bearer state detecting method, which comprises: detecting a bearer quality of a service flow between a media gateway device and an access network side device; determining the media gateway device and the access network according to the bearer quality of the service flow The status of the bearer resource between the side devices.

The present invention also discloses a bearer state detecting apparatus, including: a unit for detecting a bearer quality of a service flow between a media gateway device and an access network side device; and determining the media according to a bearer quality of the service flow A unit that carries a resource status between a gateway device and an access network side device.

The present invention also discloses a method for allocating a bearer resource, comprising: collecting state information of a bearer resource between a media gateway device and a network-side device; and allocating a bearer resource for the service call according to the state information of the bearer resource.

The present invention also discloses a bearer resource allocation system, including: a bearer state detecting device, configured to detect a state of a bearer resource between an access network side device and a media gateway device; and a resource control device, configured to detect from the bearer state The device obtains state information of the bearer resource, and allocates a bearer resource for the service call according to the state information of the bearer resource.

Compared with the prior art, the resource control device in the present invention can obtain state information such as fault or congestion of the bearer resource between the access network side device and the media gateway device in the network, and can be based on the status information of the bearer resource. The existing call control policies are adjusted to allocate bearer resources effectively and reasonably, which improves the utilization efficiency of the bearer resources and also improves the success rate of call control.

DRAWINGS

1 is a structural diagram of an NGN network when a prior art MGW has no built-in signaling gateway;

2 is a structural diagram of an NGN network when a prior art MGW has a built-in signaling gateway;

3 is a schematic diagram of a network model of a prior art NGN network;

4 is a main step diagram of a method for allocating a bearer resource according to the present invention;

FIG. 5 is a network diagram of an application background according to an embodiment of the present invention; FIG. Figure 6 is a structural view showing an embodiment of a bearing state detecting device of the present invention;

7 is a sequence diagram of an embodiment of a method for detecting a bearer state according to the present invention;

8 is a sequence diagram of a first embodiment of a method for allocating a bearer resource according to the present invention;

9 is a structural diagram of a bearer resource allocation system of the present invention.

detailed description

As shown in FIG. 4, in the softswitch network, the media gateway device MGW or the access network side device detects the state of the bearer resource between the MGW and the access network side device, and the state of the bearer resource. The information is reported to the media gateway controller MGC (one of the resource control devices), and the media gateway controller MGC adjusts the call allocation policy reasonably according to the statistics of the bearer resource status. By adopting the embodiment of the invention, the use efficiency of the bearer resources is improved, and the reliability of the service call and the transmission is also improved.

Embodiments of the present invention will be specifically described below with reference to the accompanying drawings.

Embodiments of the present invention are applied to a softswitch network as shown in FIG. The access network side device accesses various media services from the user side, and the MGW device completes media resource conversion of the accessed various media services, and the MGC implements control of the MGW and various call controls. The access network side device is connected to the MGW device through the access network, and the MGW is connected to the MGC through the bearer network, and the access network side device establishes a signaling path with the MGC through the signaling gateway device, and the MGW establishes a signaling path with the MGC through the bearer network. . The access network side device is connected to the MGW and the Signaling GateWay (SGW) through multiple links, and the MGW and the SGW can also be connected to different MGCs through multiple links.

The bearer resource in the embodiment of the present invention is to be understood as any bearer path between the access network side device and the MGW or between the access network side device and the MGC. In this embodiment, the bearer chain between them is represented. road.

The above-mentioned networking structure diagram is an application background. First, an embodiment of the bearer state detecting apparatus in the present invention will be described below.

FIG. 6 is a structural diagram of an embodiment of a bearer state detecting apparatus according to the present invention for detecting a state of a bearer link of an MGW and an access network side device in a softswitch network as shown in FIG. 5. The bearer state detecting device is a module for implementing the function of detecting link state information. In practical applications, the device may be an independent device or a module built into a device related to the link to be tested. Piece. It is assumed that, in this embodiment, the bearer state detecting device is built in the link associated with the to-be-side link.

The MGW or the link state detection module in the network side device.

The bearer state detecting device 1 mainly includes the following units:

The detecting unit 11 is configured to detect a bearer quality of a service flow corresponding to a device associated with the MGW or the access network side device where the device is located.

The implementation steps include the following steps:

First, the device identifier (EID) associated with the MGW or the access network side device, and the correspondence between the service flow of the MGW or the access network side device and the device identification EID are determined.

The device identifier EID can be any device identification manner. For example, the EID can be a Radio Network Controller-Identify (RNC-ID) or a Base Station Controller-Identify (BSC-ID). Media Gateway-Identify (MGW-ID) and other access network-side device identifiers.

The MGC carries the device identification EID in the signaling information sent to the MGW or the access network side device in advance, so that when the MGW or the access network side device receives the signaling information, the receiving state detecting device can These signaling information acquires these device identification EIDs and determines the correspondence between these identification EIDs and service flows. The device is capable of dynamically recording EIDs, so that the EIDs of all devices associated with the device and the correspondence of these EIDs to the traffic flow can be recorded in a given amount of time. The corresponding relationship of the flows can detect the bearer quality of the service flow corresponding to the specified EID. The methods of detection mainly include the following:

If the MGW or the device corresponding to the specified EID supports the Real-time Transport Control Protocol (RTCP), the MGW or the access network device can use the bearer status detection function defined in RTCP. The bearer quality of the service flows between the two devices is detected, that is, the jitter and/or packet loss rate of the service flows carried by the bearer resources are monitored.

If the MGW or the device corresponding to the specified EID supports the Bidirectional Forwarding Detection (BFD) mechanism, the MGW or the access network The side device can use this mechanism to monitor the packet loss rate of the signaling flow used to detect the interruption of the bearer resource transmission.

If the device corresponding to the specified EID of the MGW or the access network device does not meet the above two conditions, the MGW or the access network device may jitter and/or lose the service flow carried by the bearer resource on the local side. The packet rate is monitored.

The determining unit 12 is configured to determine a state according to the bearer quality of the service flow detected by the detecting unit 11.

The MGW or the access network side can be determined by performing statistics on the bearer quality of the service flow of the device corresponding to the specified EID in a predetermined period of time, that is, the jitter and the packet loss rate of the related service flow. The link state of the bearer resource between the device and the device corresponding to the EID.

In addition to the above units, the apparatus may further include a notification unit 13 for notifying the other devices of the status information of the bearer resources determined by the determining unit 12. After the link state, the notification unit 13 notifies the MGW or the access network side device of the link state information, and the MGW or the access network side device reports the information to the MGC through signaling.

Based on the embodiment of the above-described bearer state detecting device, as shown in FIG. 7, the embodiment of the bearer state detecting method of the present invention can also be described by the following steps:

Step S71: Determine a device identifier EID associated with the MGW or the access network side device, and a corresponding relationship between the related service flow and the device identifier EID.

The MGC carries the device identification EID in the signaling information sent to the MGW or the access network side device in advance, so that when the MGW or the access network side device receives the signaling information, the receiving state detecting device can These signaling information acquires these device identification EIDs and determines the correspondence between these identification EIDs and service flows. The device can also dynamically record EIDs, and record the EIDs of all peripheral devices associated with the device and the correspondence between these EIDs and service flows in a certain period of time.

Step S72: Detect the bearer quality of the service flow corresponding to the specified device identifier EID. The corresponding relationship of the service flows can detect the bearer quality of the service flow corresponding to the specified EID. The detection methods mainly include the following:

If the MGW or the access network device and the device corresponding to the specified EID support the Bidirectional Forwarding Detection (BFD) mechanism, the MGW or the access network device can use the mechanism to detect the bearer resource transmission. The packet loss rate of the interrupted signaling stream is monitored.

Step S73: Determine a state of the bearer resource between the MGW or the access network side device and the associated device according to the detected bearer quality of the service flow.

Based on the bearer state detecting apparatus and method described above, the embodiment of the bearer resource allocation method of the present invention is mainly based on the following basic processes. As shown in Fig. 8, the basic process of the present invention will first be described below, and the embodiment will be specifically described in the following.

Step S801: The bearer state detecting device detects state information of the bearer link between the MGW and the access network side device.

The bearer state detecting device is a module for implementing the function of detecting link state information. In practical applications, the device may be an independent device or may be built in a device related to the link to be tested. A module. For example, in the present invention, the bearer state detecting device may be built in The link state detection module in the MGW may also be a link state detection module built in the access network side device.

The detection process of the link state is performed by the bearer state detecting device at the time of device initialization, or periodically during the running of the device. The detected link state information is maintained by the bearer state detecting device and periodically updated.

The link state information described above mainly includes link failure information and link congestion information.

Step S802: The bearer state detecting device notifies the MGC of the detected state information of each bearer link.

The bearer state detecting means notifies the MGC of the detected status information of each bearer link in two cases:

In one case, the bearer state detecting device actively informs the MGC of the state information of the link maintained by the device. For example, the bearer state detecting means periodically notifies the MGC of the link state information according to a preset time, or the bearer state detecting means notifies the MGC of the link state information when the link state is changed. It can be seen that in this case, the MGC obtains the status information of each bearer link by means of passive reception.

In another case, the MGC queries the bearer state detecting device for status information of the relevant link, and after receiving the query request, the bearer state detecting device returns the status information of the link to be queried to the MGC. It can be seen that the MGC obtains the status information of each bearer link by means of active query.

In both cases, the manner in which the MGC and the bearer state detecting device communicate with each other has the ability to carry the link state information described above.

Step S803: The MGC adjusts the link allocation policy according to the obtained state information of each bearer link. After receiving the status information of each link from the bearer state detecting device, the MGC analyzes the link state information and adjusts the allocation policy of each link resource, thereby achieving the purpose of reasonably allocating the link resources.

The above is the basic process of the present invention, wherein the bearer state detecting device is a functional module built into a certain device; when the device is built in different devices, the invention has different specific implementation methods. In the following, based on the above basic process, it will be specifically described by different embodiments. The first embodiment describes a specific embodiment of the present invention when the above-described bearer state detecting means is a link state detecting module built in the MGW. In this case, the basic process steps are specifically as follows: Step S811: The bearer state detecting device built in the MGW detects state information of the bearer link between the MGW and the access network side device.

The bearer state detecting device periodically detects the state information of each link connected to the access network side device when the MGW device is initialized or during the running of the device, and maintains and periodically updates the links in the link state information table. Link status information of the road.

Step S812: The bearer state detecting apparatus notifies the MGC of the status information of each detected bearer link by using the MGW.

The bearer state detecting means notifies the MGC of the detected status information of each bearer link as well as two cases:

In one case, the bearer state detecting device actively informs the MGC of the state information of the link maintained by the device. For example, the bearer state detecting means periodically notifies the MGC of the link state information according to a preset time, or the bearer state detecting means notifies the MGC of the link state information when the link state is changed.

In another case, the MGC queries the bearer state detecting device for status information of the relevant link, and after receiving the query request, the bearer state detecting device returns the status information of the link to be queried to the MGC.

Both of the foregoing situations require that the MGW and the MGC in which the bearer state detecting device is located communicate with each other to have the capability of carrying the above link state information, and the bearer state detecting device can transmit the link state information to the MGC. In the specific implementation, the above objectives can be achieved between the MGC and the MGW by the following methods:

Mode 1. The MGW notifies the MGC of the link status information through the ITU-T H.248.

Specifically, the following methods can be used:

Extending a "bearer status report" event in the H.248 protocol for the MGW to notify the MGC

Relevant link state information learned by the MGW.

The ObservedEventsDescriptor descriptor in the extended "bearing status escalation" event defines the following parameters: media gateway device identification and bearer status information. The media gateway device identifier is device identification information of the MGW that notifies the link state information, and the device identifier information can be manually set. The bearer state information is the state information of the related link that is learned by the MGW, and the information includes the link identifier connected to the device and the state information of the link corresponding to the link identifier. The link identifier may be in the MGC device. Globally unique link number.

The MGW sends a "bearer status escalation" event containing the above parameters of the ObservedEventsDescriptor descriptor to the MGC using the Notify message.

In this way, after the MGC receives the "bearing status report" event, it can learn from the parameters of the ObservedEventsDescriptor descriptor that each link state message maintained by the MGW needs to be described, that the above-mentioned 248.248 protocol extends a "bearer". The status report "Event is based on the requirements of the 248.248 protocol for protocol extensions and is an extension of the definition of the 248.248 protocol standard. In practical applications, only two parties communicating using the protocol can recognize each other's transmitted information.

Mode 2. When the SGW is built in the MGW, the MGW can also notify the MGC of the link status information through the signaling channel of the SIGTRAN protocol.

The SIGTRAN protocol is a transmission control protocol used to transmit PSTN signaling over an IP network. For different application layer signaling, different adaptation layer protocol adaptations are required. For the transmission of the No. 7 signaling protocol between the softswitch and the signaling gateway, the message transmission part 3 (ΜΤΡ3) user adaptation layer protocol (ΜΤΡ3 - User Adaptation Layer, M3UA) as an adaptation protocol.

For this case, the MGW may use the following manner to inform the MGC boy link state information: In the M3UA protocol SS7 Signaling Network Management (SSNM) message, a new "bearer status report" message is extended. .

The following parameters are defined in the content of the extended "bearing status report" message: signaling gateway device identification and bearer status information. Similarly, the signaling gateway device is identified as device identification information of the SGW that notifies the link state information, and the device identification information can be manually set. The bearer state information is the state information of the related link that is learned by the MGW where the SGW is located, and the information includes the link identifier connected to the device and the state information of the link corresponding to the link identifier. A globally unique link number within the MGC device.

The SGW sends the foregoing SSNM message including link state information to the MGC. In this way, after receiving the SSNM message, the MGC can learn the link state information maintained by the MGW from the parameters of the message content.

It should also be noted that the above extension of the SSNM message for the M3UA protocol is performed in accordance with the protocol extension method specified by the M3UA protocol, and is an extension within the scope defined by the M3UA protocol standard. In practical applications, only two parties communicating using the protocol can recognize each other's transmitted information.

Step S813: The MGC adjusts the link allocation policy according to the acquired state information of each bearer link. After receiving the status information of each link from the MGW, the MGC analyzes the status information of each link, adjusts the call allocation policy in a targeted manner, and avoids the link that is faulty or congested, thereby achieving reasonable allocation of each link resource. Improve the reliability of the business.

The second embodiment describes a specific embodiment of the present invention when the above-described bearer state detecting means is a link state detecting module built in the access network side device. This embodiment differs from the first embodiment described above only in the main body and part of the specific implementation of the action, and the following description is only for the differences. In this embodiment, the technical solution of the present invention specifically includes the following steps:

Step S821: The bearer state detecting device detects state information of the bearer link between the MGW and the access network side device.

Step S822: The bearer state detecting device notifies the MGC of the status information of each detected bearer link by accessing the network side device.

At this time, different from step S12 in the foregoing first embodiment, the manner in which the detected link state information is transmitted between the access network side device and the MGC is: The path notifies the MGC of the link state information.

This method is similar to the above manner 2, except that the sender of the link state information of the mode 3 is the access network side device. In this way, the access network side device can also notify the MGC of the link status information in the following manner:

Similarly, in the M7UA protocol SS7 Signaling Network Management (SSNM) message, a new "bearer status report" message is extended.

The following parameters are defined in the content of the extended "bearing status report" message: access network side device identification and bearer status information. Similarly, the access network side device identifier is used to notify link status information. The identification information of the access device on the network side, and the device identification information can be manually set. The bearer state information is the state information of the related link that is learned by the access network side device, and the information includes the link identifier connected to the device and the state information of the link corresponding to the link identifier; wherein the link identifier may be A globally unique link number within the MGC device.

The access network side device sends the foregoing SSNM message including the link state information to the MGC. In this way, after receiving the SSNM message, the MGC can learn the link state information maintained by the MGW from the parameters of the message content.

Step S823: The MGC device adjusts the link allocation policy according to the acquired state information of each bearer link.

In practical applications, in addition to the foregoing embodiments, the bearer state detecting apparatus in the present invention may also be a node device built in the bearer network between the MGW and the access network side device, such as a router, which can pass through the router and the MGC. The inter-route protocol notifies the MGC of the bearer resource status.

A person skilled in the art may understand that all or part of the steps in implementing the above method embodiments may be completed by a program instructing related hardware, and the program may be stored in a computer readable storage medium, the storage medium Such as: R0M / RAM, disk, CD, etc.

In addition, the present invention also provides a bearer resource allocation system for implementing the foregoing method to reasonably allocate resources on the links according to state information of the bearer resources between the access network side device and the MGW.

9 is a basic model diagram of an embodiment of a bearer resource allocation system of the present invention, which includes:

The link detecting device 91 is configured to detect a state of a link between the service access device (belonging to the foregoing access network side device) and the media gateway device MGW in the softswitch network; the link detecting device in this embodiment It belongs to the aforementioned load state detecting device.

The resource control device 92 is configured to acquire state information of the link from the link detecting device, and allocate a load of the link according to the acquired link state information.

In the actual application, the link detecting device of the system may be any functional module that can implement its function, and may be built in the MGW device, the access network side device, and the related network management device, and the resource control device therein The device can be controlled for the media gateway. Each of the above descriptions corresponds to an embodiment of the bearer resource allocation system of the present invention, which will be separately described below. The first embodiment: the resource control device is an MGC device, and the link detection device is built in the MGW device. This embodiment corresponds to the first embodiment in the foregoing method for allocating resource allocation methods.

The link detecting device periodically detects the status information of each link connected to the access network side device during device initialization or during the running of the device, and maintains and periodically updates the links in the link state information table. Link status information.

The link detecting means notifies the MGC of the detected status information of each bearer link, and includes two cases:

In one case, the link detecting device actively informs the MGC of the status information of the link maintained by the device. For example, the link detecting means periodically notifies the MGC of the link state information according to a preset time, or the link detecting means notifies the MGC of the link state information when the link state is changed.

In another case, the MGC queries the link detecting device for status information of the relevant link, and after receiving the query request, the link detecting device returns the status information of the link to be queried to the MGC.

In both cases, the manner in which the MGW and the MGC in which the link detecting device is located communicates with each other has the capability of carrying the link state information described above, and the link detecting device can send the link state information to the MGC through the MGW. In the specific implementation, the above objectives can be achieved between the MGC and the MGW by the following methods:

Manner 1: The MGW notifies the MGC of the link state information through the ITU-T H.248;

Mode 2. When the SGW is built in the MGW, the MGW can also notify the MGC of the link status information through the signaling channel of the SIGTRAN.

After receiving the status information of each link from the MGW, the MGC analyzes the status information of each link, adjusts the call allocation policy in a targeted manner, and avoids the link that is faulty or congested, thereby achieving reasonable allocation of each link resource. Improve the reliability of the business.

Second Embodiment: The resource control device is an MGC device, and the link detection device is built in the access network side device.

This embodiment corresponds to the second embodiment in the foregoing method for allocating resource allocation methods.

At this time, the interactive internship process of each device of the system is as follows.

The link detecting device detects status information of the bearer link between the MGW and the access network side device. The link detecting means notifies the MGC of the detected status information of each bearer link. In this case, the method for transmitting the detected link state information between the access network side device and the MGC is: accessing the network side device by accessing the network side device and The SIGTRAN signaling path between the MGCs informs the MGC of the link status information.

The MGC device adjusts the link allocation policy according to the obtained status information of each bearer link.

As can be seen from the foregoing embodiments, by detecting the bearer quality of the service flow corresponding to the device associated with the softswitch network device (the softswitch network device may be the MGW or the access network device), and then according to the The bearer quality of the service flow determines the bearer resource status between the softswitch network device and the associated device, and the detection of the bearer state is implemented. Therefore, the MGC can obtain the bearer resource status between each MGW and the access network side device under the control, and can adjust the existing call control policy according to the state information of each bearer resource, and allocate the bearer resources effectively and reasonably. The utilization efficiency of the bearer resources is improved, and the success rate of call control is also improved.

The above description is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can also make several improvements and retouchings without departing from the principles of the present invention. It is considered as the scope of protection of the present invention.

Claims

Rights request

A method for detecting a bearer state, comprising:

Detecting a bearer quality of the service flow corresponding to the device associated with the softswitch network device; determining a bearer resource state between the softswitch network device and the associated device according to the bearer quality of the service flow.

The bearer state detecting method according to claim 1, wherein the bearer quality of the service flow corresponding to the device associated with the softswitch network device is detected by one or more of the following methods:

The softswitch network device supporting the real-time transmission control protocol and the associated device supporting the real-time transmission control protocol detect the bearer quality of the service flow by using the real-time transmission control protocol; and the softswitch supporting the bidirectional forwarding detection mechanism The network device and the bidirectional forwarding detection mechanism support the softswitch network device to monitor the bearer quality of the service flow by monitoring the service flow state by the local end.

The bearer state detecting method according to claim 2, wherein the bearer quality of the service flow is obtained by counting jitter of the service flow and a packet loss rate of a data packet of the service flow.

4. A bearing state detecting device, comprising:

a detecting unit, configured to detect a bearing quality of a service flow corresponding to a device associated with the device where the device is located;

And a determining unit, configured to determine a state of the bearer resource between the device where the device is located and the associated device according to the bearer quality of the service flow detected by the detecting unit.

The bearer state detecting apparatus according to claim 3, further comprising: a notifying unit, configured to report the bearer resource status determined by the determining unit to the resource control device.

A method for detecting a bearer state, comprising:

Detecting the bearer quality of the service flow between the media gateway device and the access network side device;

Determining a bearer resource status between the media gateway device and the access network side device according to the bearer quality of the service flow.

The method for detecting a bearer state according to claim 6, further comprising: The information of the bearer resource status is reported to the resource control device.

8. A bearing state detecting device, comprising:

a unit for detecting a bearer quality of a service flow between the media gateway device and the access network side device, configured to determine a bearer resource status between the media gateway device and the access network side device according to the bearer quality of the service flow Unit.

The device according to claim 8, further comprising: means for reporting information about the status of the bearer resource to the resource control device.

10. A method for allocating resource allocation, characterized in that:

The status information of the bearer resource between the media gateway device and the access network side device is allocated; the bearer resource is allocated for the service call according to the state information of the bearer resource.

The bearer resource allocation method according to claim 10, wherein the statistical media gateway device and the access network side device carry state information of the resource, and the service information is used according to the state information of the bearer resource. The execution entity that allocates the bearer resource is specifically: a resource control device.

The bearer resource allocation method according to claim 11, wherein the resource control device collects status information of the bearer resources between the media gateway device and the access network device:

Determining state information of the bearer resources between the media gateway device and the access network side device according to the bearer quality of the service flow;

The media resource control device obtains the bearer resource status information.

The bearer resource allocation method according to claim 12, wherein the manner in which the media resource control device obtains the bearer resource state information comprises: an active query mode or a passive receiving mode.

The bearer resource allocation method according to claim 12, wherein the obtaining, by the resource control device, the bearer resource status information comprises:

The media gateway device reports the status information of the bearer resource to the resource control device by using a protocol or signaling path between the media gateway device and the resource control device;

Or

The access network side device uses the access network side device to communicate with the resource control device The signaling path reports status information of the bearer resource to the resource control device.

The bearer resource allocation method according to any one of claims 10 to 14, wherein the status information of the bearer resource between the statistical media gateway device and the access network side device includes:

The status information of the bearer resources between the media gateway devices and the access network side devices under the control of the statistics resource control device.

16. A bearer resource allocation system, comprising:

a bearer state detecting device, configured to detect a state of a bearer resource between the access network side device and the media gateway device;

And a resource control device, configured to obtain status information of the bearer resource from the bearer state detecting device, and allocate a bearer resource for the service call according to the state information of the bearer resource.

The bearer resource allocation system according to claim 16, wherein the obtaining, by the resource control device, the status information of the bearer resource from the bearer state detecting device comprises:

Receiving, by the resource control device, state information of the bearer resource that is actively reported by the bearer state detecting apparatus;

Or

And the resource control device sends a request for querying the bearer resource status information to the bearer state detecting device; the resource control device receives state information of the bearer resource fed back by the bearer state detecting device.

The bearer resource allocation system according to claim 16, wherein the resource control device is a media gateway control device in a softswitch network, and the bearer state detecting device is built in the media gateway device and accesses a network device or a node device between the media gateway device and the access network side device.

The bearer resource allocation system according to claim 16, wherein the resource control device is a media gateway control device in a softswitch network, and the bearer state detecting device is built in the media gateway device;

And obtaining, by the resource control device, status information of the bearer resource from the bearer state detecting apparatus, where: the communication protocol or signaling path reports the bearer resource status information to the media gateway device.

The bearer resource allocation system according to claim 16, wherein the resource control device is a media gateway control device in the softswitch network, and the bearer state detecting device is built in the softswitch network. Access network side device;

Obtaining, by the resource control device, status information of the bearer resource from the bearer state detecting device, that: the access network side device adopts signaling that is used for communication between the access network side device and the media gateway control device The path reports the bearer resource status information to the media gateway device.

The bearer resource allocation system according to any one of claims 16 to 20, wherein the system includes a plurality of bearer state detecting devices, and the resource control device obtains from the plurality of bearer state detecting devices The bearer resource status information between each media gateway device and the access network side device under the control of the resource control device.