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A novel cooperative cellular relaying network structure with fixed relay stations is proposed. This structure can effectively improve the received signal strength of cell-edge users benefiting from cooperative diversity. Based on the proposed structure, a cooperative handoff strategy (CHOS) is designed. The CHOS extends the handoff algorithms based on absolute threshold value and hysteresis level...
Wireless sensor networks experience a number of problems not found in wired networks, such as limited power resources, location identification and message routing in a wireless medium. Analysis of small world networks have shown that it is possible to transmit information from one node to another node some random distance away within a small number of hops (i.e. small world networks have a small diameter)...
The traditional handoff procedure can not meet the handoff latency demand in the upward vertical handoff. To solve this problem, a novel link layer trigger mechanism based on IEEE 802.21 standard is proposed. The performance of this new handoff scheme is evaluated in this paper. The simulation results show that link layer trigger mechanism can effectively reduce the handoff latency and packet loss...
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