Device and method for selecting a cell according to a speed of a terminal in a mobile communication network

Patent metadata

Field	Value
Publication number	US-9491695-B2
Application number	US-201214238316-A
Country	US
Kind code	B2
Filing date	Aug 13, 2012
Priority date	Aug 12, 2011
Publication date	Nov 8, 2016
Grant date	Nov 8, 2016

Abstract

The present invention defines an efficient method for (re)selecting a cell according to a speed of a terminal in a HetNet where cells having various regions such as macro cells, pico cells and femto cells are arranged in the same frequency band in a mobile communication system. A cell selection control method of a terminal in a mobile communication system, according to an embodiment of the present invention, comprises a step of receiving, from a base station, cell list information for not allowing a terminal moving at a high speed to select a cell and a step of setting the terminal so that cells included in the cell list information are considered or not considered to be targets of selection or reselection when the terminal moves at the high speed. According to the present invention, in a network consisting of various types of cells using the same frequency band, the terminal can determine whether to select or reselect a cell according to the speed of the terminal. That is, the terminal moving at the high speed does not select or reselect a frequent service cell, thereby efficiently performing the cell selection or reselection. Further, power consumption of the terminal can be reduced.

First claim

The invention claimed is:

1. A method for cell selection by a terminal in a wireless communication system, the method comprising:
receiving a cell list including an identifier of at least one cell, and a cell selection indicator associated with the cell list from a base station;
determining whether the cell selection indicator is set to on;
if the cell selection indicator is set to off, configuring a cell selection candidate regardless of mobility of the terminal and the cell list; and
if the cell selection indicator is set to on and the terminal is in a high mobility, configuring the cell selection candidate with cells included in the cell list ruled out.

2. The method of claim 1 , wherein the cell selection indicator is a 1-bit indicator.

3. The method of claim 1 , wherein the cell selection indicator is a bitmap indicating a type of mobility level of the terminal.

4. The method of claim 1 , wherein the identifier is a physical cell identifiers (PCI).

5. The method of claim 1 , wherein the cell list and the cell selection indicator are received in system information.

6. A method for cell selection by a base station in a wireless communication system, the method comprising:
generating a cell list including an identifier of at least one cell, and a cell selection indicator associated with the cell list; and
transmitting the cell list and the cell selection indicator to a terminal,
wherein a cell selection candidate is configured by the terminal regardless of mobility of the terminal and the cell list, if the indicator is set to off, and
wherein the cell selection candidate is configured by the terminal with the at least one cell included in the cell list ruled out, if the cell selection indicator is set to on and the terminal is in a high mobility.

7. The method of claim 6 , wherein the identifier is a physical cell identifiers (PCI).

8. A terminal for cell selection in a wireless communication system, the terminal comprising:
a transceiver configured to transmit and receive a signal; and
a controller configured to:
receive a cell list including an identifier of at least one cell, and a cell selection indicator associated with the cell list from a base station,
determine whether the cell selection indicator is set to on,
if the cell selection indicator is set to off, configure a cell selection candidate regardless of mobility of the terminal and the cell list, and
if the cell selection indicator is set to on and the terminal is in a high mobility, configure the cell selection candidate with cells included in cell list ruled out.

9. The terminal of claim 8 , wherein the identifier is a physical cell identifiers (PCI).

10. A base station for cell selection in a wireless communication system, the base station comprising:
a transceiver configured to transmit and receive a signal; and
a controller configured to:
generate a cell list including an identifier of at least one cell, and a cell selection indicator associated with the cell list, and
transmit the cell list and the cell selection indicator to a terminal,

wherein a cell selection candidate is configured by the terminal regardless of mobility of the terminal and the cell list, if the indicator is set to off, and
wherein the cell selection candidate is configured by the terminal with the at least one cell included in the cell list ruled out, if the indicator is set to on and the terminal is in a high mobility.

11. The method of claim 6 , wherein the cell selection indicator is a bitmap indicating a type of mobility level of the terminal.

12. The terminal of claim 8 , wherein the cell selection indicator is a bitmap indicating a type of mobility level of the terminal.

13. The base station of claim 10 , wherein the cell selection indicator is a bitmap indicating a type of mobility level of the terminal.

Assignees

• Jeong Kyeong In
• Kim Soeng Hun
• Van Der Velde Himke
• Samsung Electronics Co Ltd

Inventors

• Jeong Kyeong In
• Kim Soeng Hun
• Van Der Velde Himke

Classifications

• Y02D30/70

  in wireless communication networks · CPC title

• H04W36/324

  by mobility data, e.g. speed data · CPC title

• H04W48/08

  Access restriction or access information delivery, e.g. discovery data delivery (signalling during connection H04W76/00) · CPC title

• H04W36/36

  by user or terminal equipment · CPC title

• H04W48/20 Primary

  Selecting an access point · CPC title