A New Multi-Service Token Bucket-Shaping Scheme Based on 802.11e

With the development of information technology, the demand for video transmission in wireless networks rapidly increases. The traditional traffic shaping algorithms cannot fully (or adequately) meet the demand for high-quality video transmission in wireless networks. Aiming to reduce this problem, this paper proposes a new multi-service flow, token bucket shaping scheme in an IEEE 802.11e environment. In view of the characteristics of video stream transmission in an IEEE 802.11e wireless network, this scheme adopts a multi-service token bucket technology on the basis of the traffic shaping scheme. After creating a simulation model in NS2, the simulation results show that the scheme can effectively improve the quality of service for video streaming in a wireless environment.