Method of compressing control information in a wireless communication system

• US 20060068823A1
• Filed: 08/17/2005
• Published: 03/30/2006
• Est. Priority Date: 08/17/2004
• Status: Active Grant

• Current Assignee: Korea Advanced Institute of Science and Technology, Samsung Electronics Co. Ltd.
• Original Assignee: Korea Advanced Institute of Science and Technology, Samsung Electronics Co. Ltd.
• Inventors: Cho, Sung-Hyun, Kwon, Tae-Soo, Yun, Sang-Boh, Choi, Sik, Cho, Dong-Ho, Lee, Ki-Ho, Lee, Ho-Won, Kim, Ju-Yeop, Park, Won-Hyoung
• Granted Patent: US 7,689,215 B2
• Time in Patent Office: Days
• US Class Current: 455/517
• CPC Class Codes: H04W 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• CPC Class Codes: H04W 36/0094 Definition of hand-off measurement parameters
• CPC Class Codes: H04W 36/18 for allowing seamless reselection, e.g. soft reselection
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information

Abstract

A method of compressing uplink control information in a wireless communication system where an MSS scans neighbor BSs upon request from a serving BS and transmits neighbor BS information to the serving BS. In the method, the serving BS broadcasts a neighbor advertisement message including the BS ID of at least one neighbor BS about which the serving BS wants to acquire information, and the BS ID of the at least one neighbor BS. The MSS then scans a channel from the at least one neighbor BS and transmits a scanning result along with a BS index of the at least one neighbor BS to the serving BS.

Claims

1. A method of compressing uplink control information in a wireless communication system where a mobile subscriber station (MSS) scans neighbor base stations (BSs) upon request from a serving BS and transmits neighbor BS information to the serving BS, comprising the steps of:

compressing the BS identifiers (IDs) of the neighbor BSs by the MSS; and

transmitting the neighbor BS information along with the compressed BS IDs to the serving BS by the MSS.

2. The method of claim 1, wherein the compression step comprises the steps of:

broadcasting a neighbor advertisement message including the BS ID of at least one neighbor BS about which the serving BS wants to acquire information and a BS index corresponding to the BS ID by the serving BS;

scanning a channel from the at least one neighbor BS; and

transmitting the BS index of the at least one neighbor BS together with a scanning result to the serving BS by the MSS.

3. The method of claim 2, wherein the BS index is a loop index indicating a position of the BS ID of the at least one neighbor BS.

4. The method of claim 2, wherein the serving BS keeps a mapping table in which the BS IDs of neighbor BSs are mapped to the BS indexes of the neighbor BSs.

5. The method of claim 2, wherein the neighbor advertisement message includes a configuration change count indicating the time point when the neighbor advertisement message is transmitted.

6. The method of claim 5, wherein the configuration change count indicates a frame number of the neighbor advertisement message.

7. The method of claim 5, wherein a response message for the neighbor advertisement message includes the configuration change count of the neighbor advertisement message.

8. The method of claim 5, wherein the BS index is created by combining a loop index indicating a position of the BS ID of the at least one neighbor BS and the configuration change count.

9. The method of claim 8, wherein the BS index is represented by the configuration change count and the loop index.

10. The method of claim 8, wherein most significant bits (MSBs) of the BS index are the configuration change count and least significant bits (LSBs) of the BS index are the loop index.

11. The method of claim 2, wherein the BS index is created by combining a loop index indicating a position of the BS ID of the at least one neighbor BS and a frame number of the neighbor advertisement message.

12. The method of claim 11, wherein the BS index is represented by the frame number of the neighbor advertisement message and the loop index.

13. The method of claim 11, wherein MSBs of the BS index are the frame number of the neighbor advertisement message and LSBs of the BS index are the loop index.