Smart Phone and Next Generation Mobile Computing

Supporting Wireless Technologies 185

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802.16d, which represents system profile for 802.16a devices

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802.16e, which standardizes handoff across base stations for

mobile data access.

The ETSI HIPERMAN standard is similar to 802.16a. It has been

developed in very close cooperation with IEEE 802.16, such that the

HIPERMAN standard and IEEE 802.16a standard can work together

seamlessly. As a result, many of the characteristics of 802.16 are

available in HIPERMAN, such as QoS support, adaptive modulation,

and strong security. HIPERMAN supports both point-to-multipoint

and mesh network configurations. The differences between HIPER-

MAN and 802.16 are primarily on the PHY layer. In order to create

a single interoperable standard for commercialization, as well