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IEEE 802.16 standard defines a broadband wireless access network technology, which provides a mechanism for creating multi-hop wireless mesh network. As multiple-access interference is a major limiting factor for the IEEE 802.16 mesh network, multi-channel transmission can eliminate the interference and improve the performance of the network. The efficiency of the multi-channel transmission can be...
The paper describes a system architecture and formulation of the Dynamic Subchannel Allocation problem in IEEE 802.16e networks. According to it, the DSA algorithm operates as an extension of a IEEE 802.16 time scheduler, trying to exploit the benefits of the OFDMA mode. Simulation results show a considerable improvement, compated to the legacy system, especially in terms of channel errors.
The limited number of orthogonal channels and autonomous installations of hot spots and home wireless networks often leave neighboring 802.11 basic service sets (BSSs) operating on the same or overlapping channels, therefore interfering with each other. However, the 802.11 medium access control (MAC) does not work well in resolving inter-BSS interference due to the well-known hidden/exposed-receiver...
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