CONTROL SYSTEM OF THE PRIORITY-BASED CONTENTION PERIOD CHANNEL ACCESS FOR THE COMPLEXITY REDUCTION IN WIRELESS BODY AREA NETWORK MAC PROTOCOL AND METHOD THEREOF

摘要

The present invention relates to a priority-based contention period channel access control system and a method thereof and, specifically, to a priority-based contention period channel access control system and a method thereof reducing complexity in a WBAN MAC protocol which accords a level according to the importance of data and transmitting a level disorder of data, whose transmission is delayed in a previous beacon period, preferentially in the next beacon period. The present invention divides the contention period into priority based sub-periods and accords a channel-accessible priority in each sub-period, thereby inducing distribution of nodes attempting to access the channel at the same time and reducing a transmission delay, power consumption and a collision rate. Additionally, the present invention can enhance portability to a wireless network using the contention based channel access method. [Reference numerals] (120) Level classification module; (140) Delay confirming module; (160) Priority granting module; (180) Offset module