US 7,321,582 B2
Method for dynamic control of RTS threshold to improve throughput of MAC in wireless LAN system, and computer-readable medium thereof
Woo-Yong Choi, Daejeon (Korea, Republic of); and Sok-Kyu Lee, Daejeon (Korea, Republic of)
Assigned to Electronics and Telecommunications Research Institute, (Korea, Republic of)
Filed on Jul. 21, 2004, as Appl. No. 10/897,160.
Claims priority of application No. 10-2003-0098202 (KR), filed on Dec. 27, 2003.
Prior Publication US 2005/0141476 A1, Jun. 30, 2005
Int. Cl. H04B 7/212 (2006.01)
U.S. Cl. 370—348  [370/321; 370/329; 370/332; 370/347; 370/395.53; 455/452.2; 455/453; 455/464; 455/502; 455/501] 13 Claims
OG exemplary drawing
 
1. A method for dynamically changing an RTS (Request To Send) threshold so as to enhance a MAC (Medium Access Control) throughput of a wireless LAN, the method comprising:
(a) initializing a performance index represented by a ratio of a total time taken to successfully transmit a data frame to a total time taken to transmit a MAC frame;
(b) waiting for a updating period of the RTS threshold, and setting a previous performance index as a first performance index, and a performance index previous to the first performance index as a second performance index; and
(c) comparing the size of the first performance index with the size of the second performance index, and adding a difference between first and second preceding RTS thresholds temporally corresponding to the first and second performance indexes, respectively, to a current RTS threshold, so as to update a third RTS threshold.