WO2008006270A1

WO2008006270A1 - A method, apparatus and system for realizing the sharing of time division multiplex carrying resource

Info

Publication number: WO2008006270A1
Application number: PCT/CN2007/000931
Authority: WO
Inventors: Dahai Wang
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2006-07-04
Filing date: 2007-03-22
Publication date: 2008-01-17
Also published as: CN1878150A; WO2008006270A8; CN100464541C

Abstract

A method, apparatus and system for realizing the sharing of Time Division Multiplex carrying resource. First, configure one master home virtual media gateway (VMGW) and at least one backup home VMGW for Time Division Multiplex carrying resource group; for one Time Division Multiplex carrying resource group, set the state of corresponding Time Division Multiplex carrying resource of its master home VMGW to be able and the state of corresponding TDM carrying resource of relevant backup home VMGW to be disable, and send them to the Media Gateway Controller; when the master home VMGW fails, choose one of the corresponding backup VMGWs of the Time Division Multiplex carrying resource as master home VMGW, the chosen VMGW sets the state of Time Division Multiplex carrying resource to be able, and sends it to the Media Gateway Controller. The problem that the TDM carrying resource only belongs to one home VMGW when to be divided according to the VMGW, in result to that TDM resource can't be reused when the VMGW fails, is resolved, and the using of the resource when failure happens and the reliability of the equipment are improved. This scheme is simple and easy to be implemented.

Description

Method, device and system for realizing time division multiplexing bearer resource sharing

The present invention relates to the field of communications technologies, and in particular, to a method, device, and system for implementing time division multiplexing bearer resource sharing.

Background of the invention

In the current call control system, under the separate architecture, the main body of the call control plane and the bearer control plane are MGC (Media Gateway Controller) and MGW (Media Gateway). The MGW uses the Media Gateway Control Protocol to accept MGC control, as shown in Figure 1. The Media Gateway Control Protocol is defined in ITU-t as the H.248 Series specification.

In the H.248 protocol, the bearer resource on the MGW is abstracted as Termination, that is, the endpoint is identified by the gateway's self-assigned ID. The MGC refers to the bearer resource on the MGW through the ID and operates it.

In addition, a physical MGW, that is, a PMGW, can form a plurality of virtual MGWs, that is, VMGWs, by logical division. A PMGW without any division can be viewed as a VMGW as a whole. At this time, the VMGW is seen from the MGC perspective. After being logically divided, PMGW resources, such as: bearer resources, play/receive resources, codec conversion resources, conference resources, etc., may be shared between VMGWs, or may be allocated to a specific VMGW. For PMGW resources that are not logically divided, it can be considered that all types of resources are allocated to a single VMGW. The schematic diagram is shown in Figure 2.

For the processing of bearer resources, ATM (Asynchronous Transfer Mode)/IP bearer resources generally use shared policies, while TDM (Time Division Multiplex) bearer resources are used in a divided manner. This is determined by the technical characteristics of the bearer resources themselves.

For ATM/IP bearer resources, all natural items can be managed in a large natural pool. When the MGC needs to be called, it notifies the MGW to take out the required natural items from the natural pool, and release it after the application is completed. It is up to the MGW to decide which natural item to choose, and for each natural item selected by the MGW, there is no difference in MGC.

For TDM bearer resources, each natural item needs to be configured on the MGC. The MGC needs to understand the correspondence between the natural item and the VMGW. When it is called, the MGC is responsible for selecting, and selecting a natural item also selects a VMGW, and when a VMGW is selected, a range of natural items is selected, and then a natural item is selected from this range to be occupied. A schematic diagram of the exclusive use of the TDM bearer resources is shown in FIG. A plurality of different VMGWs logically divided by one PMGW can be controlled by the same MGC or by different MGCs. In Figure 3, N VMGWs are simultaneously controlled by M MGCs (M <== N).

The problem caused by this type of partitioning rather than sharing is that once the resource's home VMGW fails, Then the resource is lost and can no longer be used for business. The fault diagram is shown in Figure 4. In fact, the fault is not the resource itself, for example, it may only be the fault of the control processing module of the VMGW. It can be put back into use, for example, to other VMGWs that are still normal.

According to the current technology, when such a problem occurs, only by manual intervention, such as re-allocating this part of the resource to another VMGW, the wasteful resources can be put back into use. This method is implemented by manual intervention. Before they came into effect, these resources have been idle and have had a negative impact on high reliability applications.

Summary of the invention

It is an object of the present invention to provide a method, apparatus and system for implementing time division multiplexing bearer resource sharing. The object of the invention is achieved by the following technical solutions:

A method for implementing time division multiplexing bearer resource sharing, comprising:

A. Configuring a primary home virtual media gateway VMGW and at least one backup home VMGW for the time division multiplexing bearer resource set;

B. For a time-division multiplexed bearer resource set, set the time-division multiplexed bearer resource corresponding to the primary home VMGW to be in an available state, and the corresponding time-division multiplexed bearer resource corresponding to the backup home VMGW is unavailable, and is reported to the media gateway. Controller

And, when the primary home VMGW is faulty, one of the backup VMGWs corresponding to the time-division multiplexed bearer resource is selected as the primary home VMGW, and the selected VMGW sets the time-division multiplexed bearer resource to an available state, and reports the status to the media gateway control. Device.

Before configuring the home VMGW for the time division multiplexing bearer resource set, the method further includes: dividing the time division multiplexing bearer resource into multiple set time division multiplexing bearer resource sets.

The method further includes: when the primary home VMGW fails, setting it to the backup home VMGW, and reporting to the media gateway controller that the faulty VMGW is unavailable as the time-division multiplexed bearer resource corresponding to the primary home VMGW.

The method for selecting a VMGW from the backup VMGW as the primary method is:

A VMGW is selected from the backed up VMGWs as the primary home VMGW by using the round robin principle.

A system for implementing time division multiplexing bearer resource sharing, including a VMGW and a media gateway controller, where the VMGW is configured with:

a time division multiplexing bearer resource configuration module, configured to configure a primary home VMGW and at least one backup home VMGW for the time division multiplexing bearer resource set; The time division multiplexing bearer resource dynamic management module is configured to set a state of the time division multiplexing bearer resource corresponding to the VMGW, and report the status to the media gateway controller.

Set on the media gateway controller:

The data management module is configured to store correspondence information of all VMGWs controlled by the media gateway controller and the time division multiplexing bearer resources, and the media gateway controller selects an available VMGC to perform a call according to the information.

It can be seen from the technical solution provided by the present invention that the present invention solves the problem that the TDM bearer resource is single-homed to the VMGW when the VMGW is allocated, and the TDM resource is not reusable when the VMGW is faulty, and the resource utilization under abnormal conditions is improved, and the device is improved. Reliability. And this program is simple and easy.

BRIEF DESCRIPTION OF THE DRAWINGS

1 is a schematic diagram of a protocol used between a prior art media gateway and a media gateway controller;

2 is a schematic diagram of resource allocation of a prior art PMGW;

3 is a schematic diagram of exclusive use of TDM bearer resources in the prior art;

4 is a schematic diagram of a fault in the exclusive use of TDM bearer resources in the prior art;

FIG. 5 is a schematic diagram of an embodiment of a system according to the present invention; FIG.

6 is a flow chart showing an operation of an embodiment of the method of the present invention;

FIG. 7 is a schematic diagram of an embodiment of a TDM bearer resource according to the method of the present invention.

Mode for carrying out the invention

The core idea of the present invention is to provide a method and system for implementing time division multiplexing bearer resource sharing, configuring multiple home VMGWs for TDM bearer resources on the MGW, and setting one of the VMGWs as the primary use, setting the available state, and the like. As a fallback, set to an unavailable state. When the primary VMGW fails, a VMGW is selected as the primary in the backup VMGW. Improve resource utilization under abnormal conditions and reliability of equipment.

The present invention provides a system for implementing time division multiplexing bearer resource sharing. A schematic diagram of an embodiment of the system is shown in FIG. 5, which includes a VMGW and an MGC. The VMGW is provided with: a TDM bearer resource configuration module and a TDM bearer. Resource dynamic management module. The TDM bearer resource configuration module is configured to divide the TDM bearer resources into N sets according to specific networking requirements, such as setl, set2, set3, ..., setN, and specify multiple sets of each TDM bearer resource set. The target VMGW to which it belongs. A primary home VMGW and a backup home VMGW are set in the configured home VMGW.

The TDM bearer resource dynamic management module is configured to dynamically manage the state of each TDM bearer resource that is allocated by the TDM bearer resource configuration module, and is only available to one VMGW at any time, and reports the state of the TDM bearer resource to the related MGC. And the TDM bearer resource label associated with the currently available VMGW when it fails. If it is not available, select one of the backup VMGWs as the primary home VMGW according to the round robin mode, and identify the TDM bearer resources associated with it as available.

A data management module is configured on the MGC for storing correspondence information between all VMGWs and TDM bearer resources managed by the MGC, and the MGC selects an available VMGC to perform a call according to the correspondence information.

The present invention provides a method for implementing time division multiplexing bearer resource sharing. The operation flow of an embodiment is shown in FIG. 6, and includes the following steps:

Step 1: The TDM bearer resource configuration module divides the TDM bearer resources into multiple sets according to the specific networking requirements, and configures one primary home VMGW and at least one backup VMGW for each set.

As shown in Figure 7, all TDM bearer resources are divided into N sets as required: setK set2 , setN. The setl configuration is primaryly assigned to VMGW1, and two other home VMGWs are designated as backups, namely VMGWi and VMGWj. The set2 configuration primary belongs to VMGW2, and at the same time, three other home VMGWs are designated as backups, namely VMGW1, VMGWm and VMGWn, and so on.

The plurality of VMGWs may be controlled by the same MGC or by different MGCs. In FIG. 7, N VMGWs are controlled by M MGCs, where N and M are integers greater than 1, and M<=N.

The VMGW as the backup may serve as the primary home VMGW of the other TDM bearer resource set; the VMGW as the primary home may also serve as the standby VMGW of the other TDM bearer resource set;

Step 2: The TDM bearer resource dynamic management module sets the state of the TDM bearer resource set to be reported to the MGC to which it belongs.

The TDM bearer resource dynamic management module sets the state of the TDM bearer resource corresponding to the current primary home VMGW to be available for the TDM bearer resource, and the TDM bearer corresponding to the other backup VMGW. The resource is set to be unavailable. Thus, there is only a single access path for TDM bearer resources. For example, for _se tl, only the MGW of VMGW1 can access it through VMGW1.

Step 3: The TDM bearer resource dynamic management module determines in real time whether the current primary home VMGW is faulty. Step 4: When the primary VMGW fails, the TDM bearer resource dynamic management module reports the MGC to which the faulty VMGW belongs, and uses the faulty VMGW as the primary affiliation. The TDM bearer resource corresponding to the VMGW is identified as being unavailable, and a VMGW is selected as the primary source in the backup VMGW, and the selected VMGW identifies the TDM bearer resource of the current primary home VMGW as the available state, and reports the status to the current master. Using the MGC to which the VMGW belongs;

Taking the above setl as an example, the setl primary home VMGW is VMGW1, and a backup home VMGW is also configured. They are VMGWi and VMGWj respectively. When the VMGW1 is normal, the current primary home VMGW of the setl is the VMGW1, and the MGCl to which the VMGW1 belongs can learn that the setl associated with the VMGW1 is available according to the information stored in the data management module. Similarly, MGC3 can understand that setl associated with VMGWi and VMGWj is not available. Now, assuming VMGW1 fails, the TDM bearer resource dynamic management module automatically polls the next backed up and normal VMGW, here set to VMGWi, upgrades it to setl's current primary home VMGW, and VMGWl is reduced to setl backup. The VMGWo TDM bearer resource dynamic management module reports the VMGW1 fault message to the associated MGCl, and the MGCl automatically identifies the bearer resource associated with it as unavailable, and stores it in the data management module. After the VMGWi is upgraded for the primary use, it will report the status of the bearer resource of the setl to the MGC to which it belongs, and the MGC3. The data management module in the MGC3 saves the message, and the setl associated with the VMGWi is known. Already available, will be selected for calling. If the subsequent VMGWi fails again, the above process is repeated, if the VMGWj is normally upgraded to the current primary home VMGW of setl, and if the VMGWj also fails, the traversal starts again from the VMGW1, and so on. It can be seen from the above that even if the primary home VMGW fails, its TDM bearer resources can be reused.

In summary, the present invention solves the problem that the TDM bearer resources are separated by the VMGW and the TDM resources are not reusable when the VMGW is faulty, and the resource utilization in the abnormal situation and the reliability of the device are improved. And this program is simple and easy.

The above is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or within the technical scope disclosed by the present invention. Alternatives are intended to be covered by the scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

Rights request

A method for implementing time division multiplexing bearer resource sharing, which is characterized by:

Configuring a primary-homed virtual media gateway VMGW and at least one backup-homed VMGW for the time-division multiplexed bearer resource set;

The time-division multiplexed bearer resource corresponding to the primary home VMGW is set to be available, and the time-division multiplexed bearer resource corresponding to the backup home VMGW is unavailable, and is reported to the media gateway controller. ;

When the primary home VMGW is faulty, one of the backup VMGWs corresponding to the time-division multiplexed bearer resource is selected as the primary home VMGW, and the time-division multiplexed bearer resource corresponding to the selected VMGW is set to an available state, and is reported to the media gateway controller.

The method for implementing time-division multiplexed bearer resource sharing according to claim 1, wherein before configuring the home VMGW for the time-division multiplexed bearer resource set, the method further comprises: multiplexing the time-division bearer resource Divided into multiple time-division multiplexed bearer resource sets.

The method for implementing the time division multiplexing bearer resource sharing according to claim 1 or 2, wherein the method further comprises:

When the primary home VMGW is faulty, it is set as the backup home VMGW and reported to the media gateway controller. The faulty VMGW is unavailable as the time-division multiplexed bearer resource corresponding to the primary home VMGW.

The method for implementing the time division multiplexing bearer resource sharing according to claim 1 or 2, wherein the method for selecting a VMGW from the backup VMGW as the primary use is -

A system for implementing time-division multiplexing bearer resource sharing, comprising a VMGW and a media gateway controller, wherein the VMGW is configured with a time division multiplexing bearer resource configuration module, configured to time-division multiplexing bearer resource set Configuring a primary home VMOW and at least one backup home VMGW;

The time division multiplexing bearer resource dynamic management module is configured to set the state of the time division multiplexing bearer resource corresponding to the VMGW, and report the status to the media gateway controller.

A system for implementing time division multiplexing bearer resource sharing according to claim 5, wherein the media gateway controller is provided with:

The data management module is configured to store correspondence information of all VMGWs controlled by the media gateway controller and the time division multiplexing bearer resources, and the media gateway controller selects an available VMGC limp call according to the information.

7. A virtual media gateway, comprising:

a time division multiplexing bearer resource configuration module, configured to configure a primary home VMGW and at least one backup home VMGW for the time division multiplexing bearer resource set;