POWER-SAVING DATA SCHEDULING SYSTEM IN LTE AND METHOD THEREOF

Abstract

A power-saving data scheduling system for LTE and a method thereof are provided. The power-saving data scheduling system includes a period decision module for selecting a cycle having a shortest delay time as a discontinuous reception (DRX) cycle for each of user from quality of service (QoS) requirements related to network services and channel conditions, and a start offset decision module for calculating the number of users in each of periods of the DRX cycle. In addition, a DRX-aware scheduling module is provided for extending the on period by increasing priority of the user and resetting an inactivity timer if a period required by the user's load is shorter than an off period. Optimal DRX parameters and DRX-aware scheduling are used to resolve the existing issues that the channel conditions, system load and QoS are not taken into consideration when the DRX parameters are determined. In addition, the DRX parameters of a user may be changed dynamically without updating all other users' parameters so as to avoid consuming unnecessary power. Moreover, a power-saving data scheduling method for LTE is also provided.