METHOD AND APPARATUS FOR RESELECTING PATH FOR IAB RELAYING IN WIRELESS COMMUNICATION SYSTEM

• US 20190327660A1
• Filed: 04/22/2019
• Published: 10/24/2019
• Est. Priority Date: 04/23/2018
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: HONG, Jongwoo, KIM, Taehun, LEE, Jaewook
• Granted Patent: US 11,039,366 B2
• Time in Patent Office: Days
• CPC Class Codes: H04L 41/0813 characterised by the conditions triggering a change of settings
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04W 24/08 Testing, supervising or monitoring using real traffic
• CPC Class Codes: H04W 36/08 Reselecting an access point
• CPC Class Codes: H04W 40/22 using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
• CPC Class Codes: H04W 40/38 adapting due to varying relative distances between nodes
• CPC Class Codes: H04W 48/18 Selecting a network or a communication service
• CPC Class Codes: H04W 84/047 using dedicated repeater stations

Abstract

A method and apparatus for reselecting a path for an integrated access and backhaul (IAB) relaying in a wireless communication system is provided. An IAB node configures a criteria of path reselection among multiple nodes, receives information from the multiple nodes, and performs the path reselection based on the criteria by using the information received from the multiple nodes and cell quality of the multiple nodes.

Claims

1. A method performed by a node in a wireless communication system, the method comprising:

configuring a criteria of path reselection among multiple nodes;

receiving information from the multiple nodes; and

performing the path reselection based on the criteria by using the information received from the multiple nodes and cell quality of the multiple nodes.

2. The method of claim 1, wherein the information includes at least one of information on a congestion level for each of the multiple nodes, information on a latency for each of the multiple nodes, information on a number of hops for each of the multiple nodes, information on a quality of service (QoS) level for each of the multiple nodes, or information on slice and/or service type for each of the multiple nodes.

3. The method of claim 2, wherein the information on the congestion level for each of the multiple nodes indicates how many nodes or user equipment (UEs) are connected to each of the multiple nodes.

4. The method of claim 2, wherein the information on the latency for each of the multiple nodes indicates a latency from each of the multiple nodes to a core network.

5. The method of claim 2, wherein the information on the number of hops for each of the multiple nodes indicates how many nodes are connected from each of the multiple odes to a core network.

6. The method of claim 2, wherein the information on the QoS level for each of the multiple nodes indicates a supported QoS level or 5G QoS indicator (5QI) for relaying bearers.

7. The method of claim 2, wherein the information on the slice and/or the service type for each of the multiple nodes indicates one of enhanced mobile broadband (eMBB), ultra-reliable and low latency communications (URLLC), or massive internet-of-things (MIoT).

8. The method of claim 1, wherein the information indicates an offset for the criteria of the path reselection.

9. The method of claim 1, wherein the information includes a hysteresis value for the criteria of the path reselection.

10. The method of claim 1, wherein the node is an integrated access and backhaul (IAB) node.

11. A node in a wireless communication system, the node comprising:

a memory;

a transceiver; and

a processor, operably coupled to the memory and the transceiver, and configured to;

configures a criteria of path reselection among multiple nodes,

controls the transceiver to receive information from the multiple nodes, and

perform the path reselection based on the criteria by using the information received from the multiple nodes and cell quality of the multiple nodes.

12. The node of claim 11, wherein the information includes at least one of information on a congestion level for each of the multiple nodes, information on a latency for each of the multiple nodes, information on a number of hops for each of the multiple nodes, information on a quality of service (QoS) level for each of the multiple nodes, or information on slice and/or service type for each of the multiple nodes.

13. The node of claim 12, wherein the information on the congestion level for each of the multiple nodes indicates how many nodes or user equipment (UEs) are connected to each of the multiple nodes.

14. The node of claim 12, wherein the information on the latency for each of the multiple nodes indicates a latency from each of the multiple nodes to a core network.

15. The node of claim 12, wherein the information on the number of hops for each of the multiple nodes indicates how many nodes are connected from each of the multiple odes to a core network.

16. The node of claim 12, wherein the information on the QoS level for each of the multiple nodes indicates a supported QoS level or 5G QoS indicator (5QI) for relaying bearers.

17. The node of claim 12, wherein the information on the slice and/or the service type for each of the multiple nodes indicates one of enhanced mobile broadband (eMBB), ultra-reliable and low latency communications (URLLC), or massive internet-of-things (MIoT).

18. The node of claim 11, wherein the information indicates an offset for the criteria of the path reselection.

19. The node of claim 11, wherein the information includes a hysteresis value for the criteria of the path reselection.

20. The node of claim 11, wherein the node is an integrated access and backhaul (IAB) node.