Power-Adjusted Random Access to a Wireless Channel

—The operation of widely-deployed random access to wireless networks is based on limited information on the result of each access attempt. When making a random access attempt, users usually do not know the exact amount of transmit power to make it successful. Also, upon failure of a transmission attempt, a user cannot tell whether the failure was caused by collision with other simultaneously-transmitting users or by his use of insufficient transmit power. To handle lack of information on the cause of failure, we propose an innovative Cause-of-Failure (CoF) resolution which increases the transmit power after a given number of consecutive unsuccessful access attempts when the probability that a given failure is caused by collision becomes sufficiently low. To exploit the thus-achieved transmit power for the next random access attempt, we also determine the Causeof-Success (CoS) based on the number of consecutive successful attempts, i.e., whether to decrease or maintain the present t...

• Type: Conference
• Year: 2008
• Where: INFOCOM
• Authors: Young-June Choi, Kang G. Shin
• Keywords: Access Attempt, Communications, INFOCOM 2008, Random Access, Transmit Power