Patent SG-11201908279V-A (SG)
Title: Method and device for automatically discovering cross-node service topology on transoceanic multiplex section shared protection ring
Inventor: HOU LEI
IPC: H04L12/24
Filed: 2017-11-28
Abstract: 00 11 O C (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 25 October 2018 (25.10.2018) WIPO I PCT 0111111010 0111 °nolo III 01110010111 OIl offiniou ois (10) International Publication Number WO 2018/192223 Al (51) International Patent Classification: HO4L 12/24 (2006.01) (21) International Application Number: PCT/CN2017/113387 (22) International Filing Date: 28 November 2017 (28.11.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 201720421686.0 20 April 2017 (20.04.2017) CN 201710262203.1 20 April 2017 (20.04.2017) CN (71) Applicant: SINO-TELECOM TECHNOLOGY CO., INC [CN/CN]; Building 11, No. 58, East Wenxiang Rd, Songjiang District, Shanghai 201102 (CN). (72) Inventors: HOU, Lei; Building 11, No. 58, Wenxiang Rd, Songjiang District, Shanghai 201102 (CN). WU, Zhiyuan; Building 11, No. 58, Wenxiang Rd, Songjiang District, Shanghai 201102 (CN). XIE, Hu; Building 11, No. 58, Wenxiang Rd, Songjiang District, Shanghai 201102 (CN). LI, Lin; Building 11, No. 58, Wenxiang Rd, Songjiang Dis- trict, Shanghai 201102 (CN). (74) Agent: J.Z.M.C. PATENT AND TRADEMARK LAW OFFICE (GENERAL PARTNERSHIP); YU, Mingwei, Room 5022, No.335, Guo Ding Road, YAng Pu District, Shanghai 200433 (CN). (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, (54) Title: METHOD AND DEVICE FOR AUTOMATICALLY DISCOVERING CROSS-NODE SERVICE TOPOLOGY ON TRANSOCEANIC MULTIPLEX SECTION SHARED PROTECTION RING Cross-node service topology calculated at node #2 {Protection group #1, start node #1, terminal node #2, service timeslot #1, service capacity AU4, current node is add-drop service node' {Protection group #2, start node #1, terminal node #0, service timeslot #2, service capacity AU4, current node is pass-through service node} {Protection group #3, start node #2, terminal node #0, service timeslot #1, service capacity AU4, current node is add-drop service node} FIG. 7 (57) : The present invention relates to a method and a device for each network element node in a transoceanic multiplex section shared protection ring to automatically discover a cross-node service topology. According to the present invention, the method for automatically discovering a cross-node service topology comprises the following steps: at the node, generating a message containing service identification information of the node, the service identification information being used for identifying a service flow config- ured for a protection group; sending the message containing the service identification information through the transoceanic multiplex section shared protection ring; and at at least one of other nodes, determining a cross-node service crossing topology according to the message containing the service identification information. According to the embodiment of the present invention, by adopting a data [Continued on next page] WO 2018/192223 Al MIDEDIMOMOIDEIREEMOMMEIHMOMMOVOIMIE KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Published: — with international search report (Art. 21(3)) communication channel to periodically send a broadcast message and interacting with a configuration module and a protection protocol module in real time, when a fault occurs in a ring, it is guaranteed that correct service-level ring protection switching can be performed. A cross-node service topology automatic discovery mechanism simplifies the operation, decreases inconsistent error configurations, and is very convenient to use and maintain.