Method and device for performing, by vehicle-to-everything user equipment, operation related to radio access technology switch in wireless communication system

Patent metadata

Field	Value
Publication number	US-11218954-B2
Application number	US-201816635712-A
Country	US
Kind code	B2
Filing date	Jul 31, 2018
Priority date	Jul 31, 2017
Publication date	Jan 4, 2022
Grant date	Jan 4, 2022

Abstract

An embodiment of the present invention relates to a method for performing an operation related to changing of a radio access technology (RAT), by a vehicle-to-everything (V2X) terminal in a wireless communication system, the method comprising the steps of: checking mapping information by a first UE; selecting a first RAT according to the mapping information; and transmitting a message including one of information indicating that the first RAT has been selected and information indicating a switch to the first RAT to all UEs belonging to a group, wherein, in the mapping information, one or more RATs are mapped to each V2X service with respect to a geographical area.

First claim

What is claimed is:

1. A method of performing an operation related to a Radio Access Technology (RAT) switch by at least one Vehicle-To-Everything (V2X) User Equipment (UE) in a wireless communication system, the method comprising:
checking a mapping information by a first V2X UE;
selecting, by the first V2X UE, a first RAT according to the mapping information;
sending, by the first V2X UE to all second V2X UEs that belong to a group of the first V2X UE, a message containing information indicating that the first RAT has been selected and information instructing a switch to the first RAT;
receiving, from all of the second V2X UEs that belong to the group, a response to the selection and the instruction, for determining whether or not to perform the RAT switch by the group; and
performing, by the group, the RAT switch to the first RAT, based on all of the second V2X UEs that belong to the group being supported by the first RAT,
wherein the mapping information is that one or more RATs are mapped per V2X service for a geographical area.

2. The method of claim 1 , wherein based on any one of the second V2X UEs that belong to the group failing to be supported by the first RAT, the selection of the first RAT or the switch to the first RAT is skipped.

3. The method of claim 1 , wherein the mapping information comprises a time information for using each of the one or more RATs, a Quality of Service (QoS) parameter that should be satisfied at each of the one or more RATs, and a congestion degree of each of the one or more RATs.

4. The method of claim 3 , wherein the QoS parameter comprises one or more of a latency, a delay budget, a transmission delay, a packet error loss rate, a transmission failure rate, a transmission success rate, and a data rate related value.

5. The method of claim 1 , wherein the first V2X UE is a representative UE of the group.

6. The method of claim 5 , wherein the representative UE comprises one selected from the group consisting of a leader of a group communication, a UE at the head of a progress direction among UEs performing the group communication, a UE initiating the group communication, and a UE designated/elected to operate as the representative UE.

7. The method of claim 1 , wherein the one or more RATs comprise evolved UMTS (Universal Mobile Telecommunication System) terrestrial radio access network (E-UTRAN) and New Radio (NR).

Assignees

• Lg Electronics Inc

Inventors

• Kim Laeyoung
• Chun Sungduck

Classifications

• H04W92/18 Primary

  between terminal devices · CPC title

• H04W76/11

  Allocation or use of connection identifiers · CPC title

• H04W4/021

  Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences · CPC title

• H04W48/18 Primary

  Selecting a network or a communication service · CPC title

• H04W4/40

  for vehicles, e.g. vehicle-to-pedestrians [V2P] · CPC title