Mobile station dormancy mode energy-saving method

Abstract

The invention discloses an energy saving method for a sleep mode of a mobile station. After sending a sleep request to a base station and getting a sleep response from the base station, the mobile station enters the sleep mode and the parameters of the base station which are returned to the mobile station include: an initial dormant window length Tmin, a largest dormant window cardinal number B and a largest dormant window index E, wherein a largest dormant window length Tmax is obtained according to the formula that Tmax=B * 2 <E> and a second dormant window length T2 is 2Tmin. When 2Tmin is lauger than Tmax, T2 is equal to Tmax; from a third dormant window, the dormant window length Tk=Tmin * Int [(k-1) <2> / 2), wherein k stands for a kth dormant window; when Tk is larger than Tmax, Tk is equal to Tmax and when the mobile station is in the dormant window status, data receiving and sending are stopped. The mobile station works according to the growth mode of the dormant window length which is put forward by the invention. Therefore, both the power consumption and the response time are obviously reduced and the comprehensive performance is improved.

Description

technical field [0001] The invention belongs to the field of energy saving of a mobile communication station, in particular to a method for saving energy in a dormant mode of a mobile station based on a MAC (Media Access Control) layer of the IEEE802.16e standard. Background technique [0002] The IEEE802.16e (communication protocol developed by the Institute of Electrical and Electronics Engineers, No. 802.16e) standard adds the function of supporting mobility on the basis of IEEE802.16. How to reduce energy consumption and extend the battery life of mobile stations through energy-saving mechanisms Become a very important problem in IEEE802.16e system. In the IEEE802.16e international standard, mobile stations and base stations have two operating modes: wake-mode and sleep-mode. Awake mode means that the mobile station is in the communication state of data transmission and reception, and all communication modules are turned on and in working state; sleep mode means that th...

AI Technical Summary

Problems solved by technology

Fangmin Xu et al. proposed an energy-saving method based on arrival rate (A Novel Adaptive Energy Saving Mode in IEEE 802.16e System. Military Communication Conference, 2006.MILCOM 200623-25Oct.2006: 1-6.), when the arrival rate is high Using a smaller initial sleep window and a smaller maximum sleep window, and using a larger initial sleep window and a larger maximum sleep window when the arrival rate is low, compared with the exponential growth energy-saving mechanism, the energy consumption is reduced by 8%, but the average 11% increase in waiting time

The linear growth method proposed by Liu Li et al. (Research and Improvement of IEEE 802.16e Sleep Mode Algorithm. Journal of Computer Science, Vol.30, No.1, 2007.1: 146-152.) has a good effect on reducing the average waiting time , but the energy-saving effect is not obvious, only when the arrival rate is extremely low, the power consumption is not worse than the exponential growth

[0014] The disadvantages of the prior art are: the energy-saving effect is limited, and the average waiting time is not short enough

Although some people have improved this, the overall performance is not very ideal

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