Method for reporting mobility information in wireless communication system and apparatus for supporting same

Patent metadata

Field	Value
Publication number	US-2016198384-A1
Application number	US-201615067603-A
Country	US
Kind code	A1
Filing date	Mar 11, 2016
Priority date	Aug 6, 2012
Publication date	Jul 7, 2016
Grant date	—

Abstract

Provided is a method for reporting mobility information by means of a terminal in a wireless communication system. The method includes generating mobility information and reporting the mobility information via a network. The mobility information includes mobility state information indicating the estimated mobility state of the terminal, and mobility history information relating to the mobility history of the terminal.

First claim

What is claimed is:

1 . A method for reporting mobility history information, performed by a user equipment (UE), in a wireless communication system, the method comprising:
generating the mobility history information; and transmitting the mobility history information to a network, wherein when the UE enters to a cell using a first radio access technology (RAT) while the UE was previously out of service and/or the UE was previously camped on a second RAT, the mobility history information includes entry information indicating a mobility history entry, and wherein the entry information includes time information indicating time spent in out of service.

2 . The method of claim 1 , wherein the first RAT and the second RAT are different from each other.

3 . The method of claim 1 , wherein the entry information includes a global cell identity or a physical cell identity of the second cell.

4 . The method of claim 3 , wherein the entry information further includes another time information indicating time spent in the second cell of the UE.

5 . The method of claim 1 , wherein the cell is a primary cell or a secondary cell.

6 . The method of claim 1 , wherein the entry information is included in the mobility history information after removing an oldest entry of the mobility history information.

7 . The method of claim 1 , wherein the mobility history information is generated in a radio resource control, RRC, connected state and/or in an RRC_idle state of the UE.

8 . The method of claim 1 , wherein the mobility history information includes a fixed maximum number of entries corresponding to recently caped cells.

9 . The method of claim 1 , wherein the UE does not update the mobility history information while the UE stays in same RAT.

10 . The method of claim 1 , wherein when the UE enters to the cell using the first RAT, mobility state estimation (MSE) information is further generated and transmitted to the network.

11 . A user equipment, UE, for reporting mobility history information in a wireless communication system, the UE comprising:
a radio frequency, RF, unit for transmitting and receiving a radio signal; and a processor coupled with the RF unit, wherein the processor is configured to:
generate the mobility history information; and
transmit the mobility history information to a network,
wherein when the UE enters to a cell using a first radio access technology (RAT) while the UE was previously out of service and/or the UE was previously camped on a second RAT, the mobility history information includes entry information indicating a mobility history entry, and
wherein the entry information includes time information indicating time spent in out of service.

12 . The UE of claim 11 , wherein the first RAT and the second RAT are different from each other.

13 . The UE of claim 11 , wherein the entry information includes a global cell identity or a physical cell identity of the second cell.

14 . The UE of claim 13 , wherein the entry information further includes another time information indicating time spent in the second cell of the UE.

15 . The UE of claim 11 , wherein the cell is a primary cell or a secondary cell.

16 . The UE of claim 11 , wherein the entry information is included in the mobility history information after removing an oldest entry of the mobility history information.

17 . The UE of claim 11 , wherein the mobility history information is generated in a radio resource control, RRC, connected state and/or in an RRC_idle state of the UE.

18 . The UE of claim 11 , wherein the mobility history information includes a fixed maximum number of entries corresponding to recently caped cells.

19 . The UE of claim 11 , wherein the UE does not update the mobility history information while the UE stays in same RAT.

20 . The UE of claim 11 , wherein when the UE enters to the cell using the first RAT, mobility state estimation (MSE) information is further generated and transmitted to the network.

Assignees

• Lg Electronics Inc

Inventors

• Jung Sunghoon
• Lee Youngdae
• Park Sungjun
• Yi Seungjune
• Kim Sangwon

Classifications

• H04W88/02

  Terminal devices · CPC title

• H04W36/04

  Reselecting a cell layer in multi-layered cells · CPC title

• H04W36/008375 Primary

  based on historical data · CPC title

• H04J11/00

  Orthogonal multiplex systems, {e.g. using WALSH codes}(H04J13/00 takes precedence) · CPC title

• H04B7/0413

  MIMO systems · CPC title