Performance analysis of enhanced DRX mechanism in LTE networks

Power management mechanism in Long Term Evolution (LTE) networks depends on the interval and position of the short Discontinuous Reception (DRX) period, long DRX period and ON duration of DRX. The proposal made in this paper is twofold. First, the sleep duration and periods are computed based on the minimum delay and power requirements of the User Equipment (UE). These values are usually kept as fixed in the existing power saving modes. Second, various power saving patterns are proposed by combining the short DRX and long DRX cycles. The existing pattern suffers from high response delay with large power consumption during power saving mode. The delay and energy consumption of the DRX operation is studied by varying the interarrival time at UE. It is observed that the response delay and the energy consumption is reduced by 5.35% and 47.14%, respectively, in square and rectangular patterns than existing hybrid pattern.