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IEEE 802.16 systems provide broadband wireless access to subscriber stations (SSs). An 802.16 wireless system can operate in mesh mode, where SSs form a multihop network to the base station. The centralized scheduling mechanism defined in the standard provides contention-free and resource-guarantee transmission services in mesh mode. However, the corresponding algorithm to this scheduling service...
The IEEE 802.16e-2005 standard for broadband wireless access provides a rich quality of service (QoS) framework suitable for supporting a multitude of services. In IEEE 802.16e, the uplink resource allocation is based on a request-grant mechanism where a mobile stations (MS) requests allocations of transmission opportunities from the base station (BS). Every frame, the BS decides the amount of resources...
This paper proposes an efficient yet simple design framework for achieving flexible resource allocation and packet scheduling for non-real-time polling service (nrtPS) traffic in IEEE 802.16 networks. By jointly considering the selective automatic repeat request mechanism at the media access control layer as well as the adaptive modulation and coding technique at the physical layer, the proposed framework...
IEEE802.16e based mobile WiMAX network provides a promising technology for broadband wireless access. Among all types of services supported by WiMAX, real time video multicast has attracted much attention. However, because of the absence of feedback channel for multicast service, it is challenging to provide link adaptation and resource allocation under the situation with diverse receiver distribution...
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