WiMax d vs. e: the difference a letter makes

12.04.2006

Power reduction

802.16e defines a series of sleep and idle mode power management functions to enable power conservation and preserve battery life for end-user devices. The mobility enhancements provided by the latest 802.16e amendment further enhances operation at vehicular speeds by providing improved support for inter-cell handoff, directed adjacent-cell measurement and sleep modes to support low-power mobile station operation.

Quality of service

802.16e introduces Extended Real-Time Polling Service, which allows 802.16e to manage traffic rates and transmission policies, as well as improve latency and jitter. The advantages afforded by the QOS techniques are especially important in the support of voice-over-IP applications.

Multicast/broadcast