# US 8,787,750 B2 · Information processing method in optical network, optical communication apparatus and system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,787,750 B2 - Document ID: US8787750B2 - Status: Granted - Kind: B2 - Application number: 13/410,818 - Filed: 2012-03-02 - Published: 2012-06-28 - Granted: 2014-07-22 - Earliest claimed: 2009-09-04 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Xiaobing Zi - Inventors: Xiaobing Zi - Web page: https://patentgrep.com/patent/US8787750B2 ## CPC - H04J 3/14: Monitoring arrangements {(for SDH/SONET rings H04J3/085)} - H04J 2203/006: Fault tolerance and recovery - H04J: MULTIPLEX COMMUNICATION (transmission in general H04B; peculiar to transmission of digital information H04L5/00; systems for the simultaneous or sequential transmission of more than one television signal H04N7/08; in exchanges H04Q11/00; stereophonic systems H04S) ## Abstract An information processing method is disclosed according to the embodiments of the present invention. The method includes: A node receives a first message from overhead of a first dimension; the node searches for local configuration information, where the local configuration information includes the overhead of the first dimension of a protection path, a protection resource of the first dimension of the protection path, overhead of a second dimension of the protection path, and a protection resource of the second dimension of the protection path; according to the local configuration information and the first message, the node determines a protection path correlated with the first message and determines overhead of the second dimension correlated with the first message; and the node sends a second message to a node adjacent to the second dimension through the overhead of the second dimension correlated with the first message, according to the first message. ## Claims ### Claim 1 An information processing method in an optical network, comprising: receiving, by a node, a first message from overhead of a first dimension; searching for local configuration information, wherein the local configuration information comprises the overhead of the first dimension of a protection path, a protection resource of the first dimension of the protection path, overhead of a second dimension of the protection path, and a protection resource of the second dimension of the protection path; according to the local configuration information and the first message, determining a protection path correlated with the first message and determining overhead of the second dimension correlated with the first message; and sending a second message to a node adjacent to the second dimension through the overhead of the second dimension correlated with the first message, according to the first message. ### Claim 2 (depends on 1) The information processing method in an optical network according to claim 1, wherein: the first message and the second message are protection switching messages. ### Claim 3 (depends on 1) The information processing method in an optical network according to claim 1, wherein: the first message and the second message are protection path state messages. ### Claim 4 (depends on 1) The information processing method in an optical network according to claim 1, wherein: the overhead is overhead of an optical network frame, and different overhead is used to transmit messages of different protection paths. ### Claim 5 (depends on 1) The information processing method in an optical network according to claim 1, wherein: the overhead is one of at least two portions that are generated by dividing APS overhead of a channel, and different overhead corresponds to messages of different protection paths. ### Claim 6 (depends on 2) The information processing method in an optical network according to claim 2, wherein: after the determining the overhead of the second dimension correlated with the first message, the method further comprises: setting up a cross-connection between the protection resource of the first dimension and the protection resource of the second dimension for the protection path correlated with the first message. ### Claim 7 (depends on 6) The information processing method in an optical network according to claim 6, wherein: Before the setting up the cross-connection between the protection resource of the first dimension and the protection resource of the second dimension for the protection path correlated with the first message, the method further comprises: receiving a protection switching message from the overhead of the second dimension correlated with the first message. ### Claim 8 An information processing method in an optical network, comprising: receiving, by a node, a third message from overhead of a first dimension; searching for local configuration information, wherein the local configuration information comprises the overhead of the first dimension of a protection path and a protection resource of the first dimension of the protection path; and determining a protection path correlated with the third message, according to the local configuration information and the third message; setting up a cross-connection for the protection path correlated with the third message if the third message is a protection switching message; recording a state of the protection path correlated with the third message if the third message is a protection path state message. ### Claim 9 An information processing method in an optical network, comprising: determining, by a node, a protection path upon detecting failure of a working path; searching for local configuration information, wherein the local configuration information comprises overhead of a second dimension of the protection path and a protection resource of the second dimension of the protection path; and determining the overhead of the second dimension of the protection path according to the local configuration information; and sending a fourth message to a node adjacent to the second dimension through the overhead of the second dimension of the protection path, wherein the fourth message is a protection switching message. ### Claim 10 (depends on 9) The information processing method in an optical network according to claim 9, wherein: after the determining the overhead of the second dimension of the protection path, the method further comprises: setting up a cross-connection for the protection path; or setting up a cross-connection for the protection path after receiving a protection switching message from the overhead of the second dimension. ### Claim 11 An optical communication system, comprising: a first optical communication apparatus, configured to: determine a protection path upon detecting failure of a working path; search for local configuration information, wherein the local configuration information comprises overhead of a second dimension of the protection path and a protection resource of the second dimension of the protection path; and determine overhead of the second dimension of the protection path in the first optical communication apparatus according to the local configuration information; and send a fourth message to a node adjacent to the second dimension of the first optical communication apparatus through the overhead of the second dimension of the protection path in the first optical communication apparatus, wherein the fourth message is a protection switching message; and a second optical communication apparatus, configured to: receive a third message from overhead of a first dimension of the second optical communication apparatus; search for local configuration information, wherein the local configuration information comprises the overhead of the first dimension of the protection path and a protection resource of the first dimension of the protection path; and determine the protection path correlated with the third message, according to the local configuration information and the third message, wherein the third message is a protection switching message; and set up a cross-connection for the protection path correlated with the third message. ### Claim 12 (depends on 11) The optical communication system according to claim 11, wherein: the node adjacent to the second dimension of the first optical communication apparatus is the second optical communication apparatus; and the third message received by the second optical communication apparatus from the overhead of the first dimension of the second optical communication apparatus is the fourth message sent by the first optical communication apparatus. ### Claim 13 (depends on 11) The optical communication system according to claim 11, further comprising: a third optical communication apparatus, configured to: receive a first message from overhead of a first dimension of the third optical communication apparatus; search for local configuration information, wherein the local configuration information comprises the overhead of the first dimension of a protection path, the protection resource of the first dimension of the protection path, overhead of a second dimension of the protection path, and a protection resource of the second dimension of the protection path; according to the local configuration information and the first message, determine a protection path correlated with the first message and determine overhead of the second dimension of the third optical communication apparatus, wherein the overhead of the second dimension of the third optical communication apparatus is correlated with the first message; and send a second message to a node adjacent to the second dimension through the overhead of the second dimension of the third optical communication apparatus according to the first message, wherein the overhead of the second dimension of the third optical communication apparatus is correlated with the first message, wherein the node adjacent to the second dimension of the first optical communication apparatus is the third optical communication apparatus, and the node adjacent to the second dimension of the third optical communication apparatus is the second optical communication apparatus; and the first message received by the third optical communication apparatus from the overhead of the first dimension of the third optical communication apparatus is the fourth message sent by the first optical communication apparatus, and the third message received by the second optical communication apparatus from the overhead of the first dimension of the second optical communication apparatus is the second message sent by the third optical communication apparatus.