Granted Patent B2

US 12,604,236 · App. 18/013,458 · Granted Apr 14, 2026

Inventors: Quan Xiong (Shenzhen, CN); Shaofu Peng (Shenzhen, CN)

Assignee: ZTE CORPORATION

H04W28/06H04W76/12

Abstract

Claims (48)

1 . An information exchange method, the method being applied by a first communication node and comprising:

receiving segment routing Internet Protocol version 6 (SRv6) path segment compression information reported by a second communication node, wherein the SRv6 path segment compression information comprises node construction information of an SRv6 path segment identifier and node behavior information of the SRv6 path segment identifier; and

sending SRv6 path segment compression configuration information to a third communication node according to the SRv6 path segment compression information;

wherein the node construction information of the SRv6 path segment identifier comprises length information of a locator block of the SRv6 path segment identifier, length information of a locator node of the SRv6 path segment identifier, length information of a function of the SRv6 path segment identifier, length information of arguments of the SRv6 path segment identifier and a compression encapsulation type of the SRv6 path segment identifier;

wherein the node behavior information of the SRv6 path segment identifier comprises a terminal behavior type of the SRv6 path segment identifier and interior gateway protocol (IGP) algorithm type information corresponding to the SRv6 path segment identifier;

wherein the SRv6 path segment compression configuration information comprises: common prefix length information of the SRv6 path segment identifier, length information of a compressed SRv6 path segment identifier and a compression encapsulation type of the SRv6 path segment identifier.

2 . The method of claim 1 , wherein the first communication node is a controller.

3 . The method of claim 1 , wherein the SRv6 path segment compression information is received through a Border Gateway Protocol-Link State (BGP-LS) or a Path Computation Element Communication Protocol (PCEP).

4 . The method of claim 1 , wherein the SRv6 path segment compression configuration information is sent through a Border Gateway Protocol (BGP) or a PCEP.

5 . The method of claim 3 , wherein a sub-tag-length-value (TLV) of the BGP-LS or the PCEP comprises:

a first bit flag as an extension for indicating that the SRv6 path segment identifier needs to be compressed and the sub-TLV carries the SRv6 path segment compression information;

a structure sub-sub-TLV of the SRv6 path segment identifier as an extension for representing the node construction information of the SRv6 path segment identifier; and

a behavior sub-sub-TLV of the SRv6 path segment identifier as an extension for representing the node behavior information of the SRv6 path segment identifier.

6 . The method of claim 4 , wherein a sub-TLV of the BGP or the PCEP comprises:

a second bit flag as an extension for indicating that the SRv6 path segment identifier needs to be compressed and the sub-TLV carries the SRv6 path segment compression configuration information; and

a compressed sub-sub-TLV of the SRv6 path segment identifier as an extension for indicating the SRv6 path segment compression configuration information.

7 . An information exchange method, the method being applied by a second communication node and comprising:

determining segment routing Internet Protocol version 6 (SRv6) path segment compression information, wherein the SRv6 path segment compression information comprises node construction information of an SRv6 path segment identifier and node behavior information of the SRv6 path segment identifier; and

reporting the SRv6 path segment compression information to a first communication node for the first communication node to send SRv6 path segment compression configuration information to a third communication node according to the SRv6 path segment compression information;

wherein the node construction information of the SRv6 path segment identifier comprises length information of a locator block of the SRv6 path segment identifier, length information of a locator node of the SRv6 path segment identifier, length information of a function of the SRv6 path segment identifier, length information of arguments of the SRv6 path segment identifier and a compression encapsulation type of the SRv6 path segment identifier; and

the node behavior information of the SRv6 path segment identifier comprises a terminal behavior type and interior gateway protocol (IGP) algorithm type information corresponding to the SRv6 path segment identifier;

wherein the SRv6 path segment compression configuration information comprises: common prefix length information of the SRv6 path segment identifier, length information of a compressed SRv6 path segment identifier and a compression encapsulation type of the SRv6 path segment identifier.

8 . The method of claim 7 , wherein the second communication node is a head node of an SRv6 network or a tail node of an SRv6 network.

9 . The method of claim 7 , wherein the SRv6 path segment compression information is reported through a Border Gateway Protocol-Link State (BGP-LS) or a Path Computation Element Communication Protocol (PCEP);

a sub-tag-length-value (TLV) of the BGP-LS or the PCEP comprises:

a first bit flag as an extension for indicating that the SRv6 path segment identifier needs to be compressed and the sub-TLV carries the SRv6 path segment compression information;

a structure sub-sub-TLV of the SRv6 path segment identifier as an extension for representing the node construction information of the SRv6 path segment identifier; and

a behavior sub-sub-TLV of the SRv6 path segment identifier as an extension for representing the node behavior information of the SRv6 path segment identifier.

10 . A tunnel establishment method, the method being applied by a third communication node and comprising:

receiving segment routing Internet Protocol version 6 (SRv6) path segment compression configuration information sent by a first communication node, wherein the SRv6 path segment compression configuration information is sent by the first communication node according to SRv6 path segment compression information reported by a second communication node, and the SRv6 path segment compression information comprises node construction information of an SRv6 path segment identifier and node behavior information of the SRv6 path segment identifier; and

establishing a tunnel with the second communication node according to the SRv6 path segment compression configuration information;

wherein the node construction information of the SRv6 path segment identifier comprises length information of a locator block of the SRv6 path segment identifier, length information of a locator node of the SRv6 path segment identifier, length information of a function of the SRv6 path segment identifier, length information of arguments of the SRv6 path segment identifier and a compression encapsulation type of the SRv6 path segment identifier;

wherein the node behavior information of the SRv6 path segment identifier comprises a terminal behavior type of the SRv6 path segment identifier and interior gateway protocol (IGP) algorithm type information corresponding to the SRv6 path segment identifier;

wherein the SRv6 path segment compression configuration information comprises: common prefix length information of the SRv6 path segment identifier, length information of a compressed SRv6 path segment identifier and a compression encapsulation type of the SRv6 path segment identifier.

11 . The method of claim 10 , wherein the third communication node is a head node of an SRv6 network.

12 . The method of claim 10 , wherein the SRv6 path segment compression configuration information is sent through a Border Gateway Protocol (BGP) or a Path Computation Element Communication Protocol (PCEP);

a sub-tag-length-value (TLV) of the BGP or the PCEP comprises:

a second bit flag as an extension for indicating that a path segment identifier needs to be compressed and the sub-TLV carries the SRv6 path segment compression configuration information; and

a compressed sub-sub-TLV of the path segment identifier as an extension for indicating the SRv6 path segment compression configuration information.

13 . A communication node, comprising:

at least one processor; and

a storage device, which is configured to store at least one program;

wherein the at least one program is executed by the at least one processor to cause the at least one processor to perform the information exchange method of claim 1 .

14 . A non-transitory computer-readable storage medium, which is configured to store a computer program, wherein the program is executed by a processor to cause the processor to perform the information exchange method of claim 1 .

15 . A communication node, comprising:

at least one processor; and

a storage device, which is configured to store at least one program;

wherein the at least one program is executed by the at least one processor to cause the at least one processor to perform the information exchange method of claim 7 .

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (23)