Method, system and apparatus for synchronizing stream between bearer control layer and bearer layer devices

• US 8,160,052 B2
• Filed: 04/23/2008
• Issued: 04/17/2012
• Est. Priority Date: 10/24/2005
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: E, Wei, Xu, Rui
• Primary Examiner(s): Kizou, Hassan
• Assistant Examiner(s): Liu, Siming
• Application Number:
  US12/108,268
• Publication Number:
  US 20080232346A1
• Time in Patent Office: 1,455 Days
• Field of Search: 370/351, 370/352, 370/401, 370/392, 709/226, 709239-242
• US Class Current: 370/350
• CPC Class Codes: H04L 41/5019 Ensuring fulfilment of SLA
• CPC Class Codes: H04L 47/781 Centralised allocation of resources
• CPC Class Codes: H04L 65/1069 Session establishment or de-establishment

Abstract

A method, a system and an apparatus for synchronizing the stream between the bearer control layer and bearer layer devices. Bearer layer device returns information corresponding to the stream synchronizing information distributed by the resource manager RM of the bearer control layer back to the resource manager RM (101, 102); when the resource manager RM determines that there is information needed to be synchronized included in the information returned by bearer layer device (103), it compares the information with the one held by itself (105), and performs synchronization to the information within the bearer layer devices that need to be synchronized according to the result of the comparison.

Claims

1. A method for synchronizing stream records between devices of a bearer control layer and a bearer layer, comprising:

returning, by a bearer layer device, a stream record corresponding to a stream synchronization request sent from a resource manager (RM), to the RM on the bearer control layer in response to the stream synchronization request sent from the RM; and

comparing, by the RM, a stream record stored in the RM with the stream record returned from the bearer layer device; and

performing, by the RM, a stream synchronization process on to-be-synchronized information in the bearer layer device in accordance with a comparison result;

wherein the process of performing the stream synchronization process by the RM comprises;

receiving, by the RM, the stream record corresponding to the stream synchronization request sent from the RM, returned from the bearer layer device,

searching stream records stored in the RM for the stream record returned from the bearer layer device, and

if the stream record returned from the bearer layer device is absent in the stream records stored in the RM, instructing the bearer layer device to delete the stream record absent in the stream records stored in the RM and returned from the bearer layer device;

if the stream record returned from the bearer layer device is present in the stream records stored in the RM, comparing the stream record stored in the RM with the stream record returned from the bearer layer device, and if the stream record stored in the RM and the stream record returned from the bearer layer device are inconsistent, sending the inconsistent stream record stored in the RM to the bearer layer device and instructing the bearer layer device to update the inconsistent stream record stored in the bearer layer device.

2. The method according to claim 1, wherein the process of returning by the bearer layer device the corresponding stream record to the RM comprises:

sending, by the RM, the stream synchronization request in a stream synchronization request message to the bearer layer device; and

returning, by the bearer layer device, the stream record corresponding to the stream synchronization request sent from the RM, to the RM in response to the stream synchronization request.

3. The method according to claim 1, wherein the process of returning by the bearer layer device the corresponding stream record to the RM comprises:

sending, by the RM, to the bearer layer device the stream synchronization request in a stream synchronization request message carrying flag information of a stream table entry to be synchronized; and

checking, by the bearer layer device, to determine whether a stream record carrying the flag information is present, and if there is no stream record carrying the flag information, returning an end message to the RM;

if the stream record carrying the flag information is present, selecting and returning the stream record carrying the flag information to the RM.

4. The method according to claim 1, wherein the process of returning by the bearer layer device the stream record corresponding to the stream synchronization request sent from the RM, to the RM comprises:

sending, by the RM, to the bearer layer device a policy dispatch message carrying the to-be-synchronized information; and

returning, by the bearer layer device, the stream record corresponding to the to-be-synchronized information, to the RM in response to the to-be-synchronized information.

5. The method according to claim 1, wherein the process of returning by the bearer layer device the stream record corresponding to the stream synchronization request sent from the RM, to the RM comprises:

sending, by the RM, to the bearer layer device a policy dispatch message carrying the to-be-synchronized information, the to-be-synchronized information carrying flag information of a stream table entry to be synchronized; and

checking, by the bearer layer device, to determine whether a stream record carrying the flag information is present, and if there is no stream record carrying the flag information, returning an end message to the RM;

if the stream record carrying the flag information is present, selecting and returning the stream record carrying the flag information to the RM.

6. The method according to claim 2, wherein the process of returning by the bearer layer device the stream record corresponding to the stream synchronization request sent from the RM, to the RM further comprises:

returning, by the bearer layer device, an end message to the RM after returning the stream record corresponding to the stream synchronization request sent from the RM, to the RM; and

determining, by the RM, an end of returning the stream record corresponding to the stream synchronization request sent from the RM, from the bearer layer device in accordance with the received end message.

7. The method according to claim 1, further comprising:

performing, by the bearer layer device, a deletion or update process in response to the received instruction, and returning processing result information to the RM.

8. The method according to claim 7, further comprising:

receiving, by the RM, the processing result information returned from the bearer layer device, if it is determined from the processing result information that the bearer layer device has synchronized the stream record absent in the stream record in the RM or the stream record inconsistent with the stream record in the RM successfully, ending the synchronization process;

if it is determined from the processing result information that the bearer layer device has not synchronized stream record absent in the stream record in the RM or the stream record inconsistent with the stream record in the RM successfully, continuing with sending a new stream synchronization request to the bearer layer device.

9. A system for synchronizing stream records between devices of a bearer control layer and a bearer layer, comprising a bearer layer device and a resource manager (RM), wherein the RM comprises a request module and a determination module and the bearer layer device comprises a response module and a synchronization processing module;

wherein

the request module is configured to send a stream synchronization request to the bearer layer device;

the response module is configured to return a stream record corresponding to the stream synchronization request sent from the request module, to the RM in response to the stream synchronization request sent from the request module;

the determination module is configured to compare the stream record returned from the response module with a stream record stored in the RM and to instruct the bearer layer device to perform a stream synchronization process on to-be-synchronized information in accordance with a comparison result; and

the synchronization processing module is configured to perform the stream synchronization process on the to-be-synchronized information in the bearer layer device in accordance with the instruction from the determination module;

wherein when the stream synchronization request sent from the request module comprises flag information of a to-be-synchronized stream record, the response module returns a stream record corresponding to the flag information to the RM in accordance with the received flag information of the stream record; and

when the stream synchronization request sent from the request module comprises no flag information of the to-be-synchronized stream record, the response module returns all stream records stored in the response module to the RM;

wherein upon determining that the stream record returned from the response module is absent in the stream records stored in the RM, the determination module instructs the synchronization processing module to delete the stream record absent in the stream records stored in the RM; and

upon determining that the stream record returned from the response module is present in the stream records stored in the RM, the determination module compares the stream record returned from the response module with the stream record stored in the RM, and if the stream record stored in the RM and the corresponding stream record returned from the bearer layer device are inconsistent, the determination module sends the inconsistent stream record to the synchronization processing module and instructs the synchronization processing module to update the stream record corresponding to the inconsistent stream record.

10. The system according to claim 9, wherein the response module returns an end message to the RM after returning the stream record corresponding to the stream synchronization request sent from the request module, to the RM, and the response module returns the end message to the RM upon determining that the flag information of the stream record sent from the request module is absent in the stream records stored in the bearer layer device.

11. The system according to claim 9, wherein the synchronization processing module returns processing result information to the RM at the end of the synchronization process, and the request module receives the processing result information returned from the bearer layer device and if it is determined from the processing result information that the bearer layer device has synchronized the stream record absent in the stream record in the RM or the stream record inconsistent with the stream record in the RM successfully, ends the synchronization process;

if it is determined from the processing result information that the bearer layer device has not synchronized the stream record absent in the stream record in the RM or the stream record inconsistent with the stream record in the RM successfully, the request module continues with sending a new stream synchronization request.