Operation method of communication node supporting mobility in communication network

• US 10,433,352 B2
• Filed: 11/01/2017
• Issued: 10/01/2019
• Est. Priority Date: 11/01/2016
• Status: Active Grant

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: Cho, Seung Kwon, Kim, Seok Ki, Kim, Won Ik, Kim, Eun Kyung, Kim, Jae Heung, Song, Jae Su, Shin, Sung Pil, Shin, Sei Yun, Yun, Mi Young, Jung, Soo Jung, Cho, Yun Hee, Kim, Tae Joong, Baek, Seung Kwon
• Primary Examiner(s): Nguyen, Brian D
• Application Number:
  US15/800,835
• Publication Number:
  US 20180124859A1
• Time in Patent Office: Days
• CPC Class Codes: H04W 28/021 in wireless networks with changing topologies, e.g. ad-hoc networks self-organizing networks H04W84/18
• CPC Class Codes: H04W 36/0009 for a plurality of users or terminals, e.g. group communication or moving wireless networks user group management H04W4/08; processing of subscriber group data H04W8/186
• CPC Class Codes: H04W 40/246 Connectivity information discovery
• CPC Class Codes: H04W 56/0025 synchronizing potentially movable access points
• CPC Class Codes: H04W 76/12 Setup of transport tunnels
• CPC Class Codes: H04W 8/26 Network addressing or numbering for mobility support
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

An operation method of a first communication node, which controls a plurality of communication nodes included in a mobile xhaul network supporting mobility, may comprise performing an attach procedure between the first communication node and a second communication node among the plurality of communication nodes; configuring a path for communications between the second communication node and a third communication node for which attach procedure has been completed among the plurality of communication nodes; and supporting communications of the second communication node and the third communication node using the configured path.

Claims

1. An operation method of a first communication node in a mobile xhaul network comprising a plurality of communication nodes each of which has mobility, the operation method comprising:

performing a discovery procedure for a second communication node;

establishing a link with the second communication node discovered through the discovery procedure;

supporting an attach procedure between the second communication node and a third communication node performing network-wide resource management, wherein the third communication node assigns a unique ID to the second communication node through the attach procedure; and

changing an operation mode of the first communication node from an idle mode to a master mode after establishing the link,

wherein an operation mode of the second communication node is changed from an idle mode to a slave mode after establishing the link, a node in the master mode allocates resources to nodes in the slave mode for communications, and a node in the idle mode does not communicate with any other nodes, and

wherein a state of the second communication node is changed from a deregistered state into a registered state when the attach procedure between the second communication node and the third communication node is completed, and the state of the second communication node is changed from an unlinked state to a linked state after establishing the link.

2. The operation method according to claim 1, wherein the first communication node obtains a first identifier of the second communication node and a sector identifier including a sector index for identifying a sector of the second communication node through the discovery procedure.

3. The operation method according to claim 2, wherein the first communication node further obtains a beam index of a beam for the second communication node through the discovery procedure.

4. The operation method according to claim 1, wherein a second identifier of the second communication node is allocated by the third communication node when the second communication node is in the registered state.

5. The operation method according to claim 1, further comprising:

identifying quality of service (QoS) of data to be transmitted from the first communication node;

determining a destination communication node to which the data is to be transmitted among the plurality of communication nodes based on the identified QoS and a forwarding table preconfigured by the third communication node;

establishing a radio bearer for the determined destination communication node; and

transmitting the data through the established radio bearer.

6. The operation method according to claim 1, wherein the second communication node is connected to the third communication node through an H3 interface, and connected to the first communication node through an H2 interface.

7. The operation method according to claim 6, wherein the second communication node performs communications with the third communication node based on an MXN H3 control (MH3C) protocol.

8. The operation method according to claim 6, wherein the second communication node performs communications with the first communication node based on an MXN H2 control (MH2C) protocol.

9. An operation method of a first communication node in a mobile xhaul network comprising a plurality of communication nodes each of which has mobility, the operation method comprising:

allowing the first communication node to be discovered by a second communication node through a discovery procedure;

establishing a link with the second communication node discovering the first communication node;

performing an attach procedure with a third communication node performing network-wide resource management under support of the second communication node, wherein the third communication node assigns a unique ID to the first communication node through the attach procedure; and

changing an operation mode of the first communication node from an idle mode to a slave mode after establishing the link,

wherein an operation mode of the first communication node is changed from an idle mode to a master mode after establishing the link, a node in the master mode allocates resources to nodes in the slave mode for communications, and a node in the idle mode does not communicate with any other nodes, and

wherein a state of the first communication node is changed from a deregistered state into a registered state when the attach procedure between the first communication node and the third communication node is completed, and the state of the first communication node is changed from an unlinked state to a linked state after establishing the link.

10. The operation method according to claim 9, wherein the second communication node obtains a first identifier of the first communication node and a sector identifier including a sector index for identifying a sector of the first communication node through the discovery procedure.

11. The operation method according to claim 10, wherein the second communication node further obtains a beam index of a beam for the first communication node through the discovery procedure.

12. The operation method according to claim 9, wherein a second identifier of the first communication node is allocated by the third communication node when the first communication node is in the registered state.

13. The operation method according to claim 9, further comprising:

identifying quality of service (QoS) of data to be transmitted from the first communication node;

determining a destination communication node to which the data is to be transmitted among the plurality of communication nodes based on the identified QoS and a forwarding table preconfigured by the third communication node;

establishing a radio bearer for the determined destination communication node; and

transmitting the data through the established radio bearer.

14. The operation method according to claim 9, wherein the first communication node is connected to the third communication node through an H3 interface, and connected to the second communication node through an H2 interface.

15. The operation method according to claim 14, wherein the first communication node performs communications with the third communication node based on an MXN H3 control (MH3C) protocol.

16. The operation method according to claim 14, wherein the first communication node performs communications with the second communication node based on an MXN H2 control (MH2C) protocol.