Trade-Off Analysis (802.11e versus 802.15.3 QoS Mechanism)
With the advent of new broadband technologies providing higher user data rates and QoS support for multimedia usage, the wireless multimedia market is clearly poised for rapid growth. As the volume of traffic over a wireless network is increased, so is the need for an efficient and robust QoS mechanism, which will be emphasized when multiple services are multiplexed into the same radio access technology. Because of the consumer nature of this market and the price pressure that this implies, supporting multiple traffic types in an efficient and robust manner is further constrained by the fact that most devices will have limited processing power and memory capabilities. In recent years, there have been a number of MAC protocols proposed to efficiently handle prioritized and parameterized QoS based traffic. In this paper, we intend to review two of the most popular ones: IEEE802.11e draft D3.0 versus IEEE802.15.3 draft D0D. We will first review the main characteristics and specificities of these two MAC protocols by describing the respective advantages and drawbacks of their medium access technique, as well as their limitations. We will then examine how the two protocols perform when handling multiple traffic types, and for different network configurations.
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