Wireless system, base station and mobile station

Abstract

Disclosed herewith is a wireless system capable of reducing packet sending delay occurrence and packet sending delay jittering at the time of hand-over processing executed therein. In the wireless system, upon estimating occurrence of a hand-over event, a subject mobile station and its base station extend the packet buffering period respectively and furthermore, the base station changes the current burst scheduling method for another. The base station and the mobile station then exchanges messages required to execute the hand-over procedure in a period between when sending of a burst ends and when sending of the next burst begins.

Description

technical field [0001] The invention relates to a wireless system for real-time communication by packet switching. Background technique [0002] In the packet switching network of the wireless system, not only data communication such as the Internet, but also real-time communication such as VoIP (Vioce over IP) and TV telephone are performed, and the traffic volume of real-time communication is on the rise. On the other hand, QoS (Quality of Service) control and policy control, dynamic address allocation, authentication, etc. make the wireless system multifunctional and complicated, and the handover time tends to increase. It is also very important to maintain the quality of real-time communication at the time of handover. [0003] In a wireless system, a base station and a mobile station generally use packets such as IP (Internet Protocol) to form an information unit for wireless transmission, and perform wireless transmission. In addition, the wireless system performs sc...

AI Technical Summary

Problems solved by technology

This adjustment is to convert the variable delay into a fixed delay, so when the amount of delay fluctuation that needs to be removed increases, an additional fixed delay increase is required

And, with the increase of additional fixed delay, the required buffer size increases

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