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The CPqD Cognitive Mesh Network (CCMN) has been developed with traditional cognition elements, such as energy detection based sensing and with the ability to switch the data channel to take advantage of any available channels on a given radio-electric spectrum band. Many of the solutions that utilize cognitive mesh networks are based on the fact that it uses a common control channel (CCC) to manage...
Wireless sensor networks represent an innovative prototype for extracting data from the environment for various applications. It consist of various sensors which send their sensed data to base station. So energy preservation is a key issue for sensor nodes as they have restricted power. This has led to a number of routing scheme for maximizing the network lifetime. In this paper we have enhanced the...
This paper presents two MAC strategies for multi-hop cognitive radio networks in single radio multi-channel cases. Both strategies use one of the idle multiple channels for communication among secondary users, and the network will leave the current channel and jump to another channel as a group if any primary user appears. The first strategy is based on a pre-defined pattern that will always tune...
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