In an ad hoc wireless network system, wireless terminals can autonomously construct a network and directly communicate with each other without using wired network. A Flexible Radio Network is one of the ad hoc wireless network systems which has been operational in a recent few years. In the Flexible Radio Network, an original communication protocol is implemented to obtain the reliability of th...

Syntax Notation One (ASN.1) is a generic notation for specifying data types and values, especially those that should be transferred via some communication medium. ASN.1 is widely utilized in telecommunication industry for the purpose of protocol specification and has been standardized by ITU-T in Recommendation X.680.

Channel assignment has been extensively studied in wireless network such as cellular network, with the appearance of the new multi-radio multi-channel network such as wireless mesh network and cognitive radio network, channel assignment in such network has been a hot research topic again. In this paper, we use game theory to study the channel assignment problem, we model channel assignment in m...

Overview Mobile network bandwidth demands continue to increase with no end in sight. The subscriber hunger for higher bandwidth and higher capacity services is driving fiber deeper and higher into the radio access network (RAN). This paper will explore the technology drivers, the challenges of deploying reliable and robust fiber-to-the-antenna (FTTA) networks, and new radio interface standards ...

Energy efficiency in cognitive radio networks has received lots of research attention lately due to the impact low energy efficiency has on the design, implementation and performance of the network. In this research, cognitive radio network as regards to energy efficiency has been analyzed. The importance of energy efficiency in cognitive radio networks and sources of unnecessary energy consump...

Routing is an important challenge in WSN due to the presence of hundreds or thousands of sensor nodes. Low Energy Adaptive Clustering Hierarchy (LEACH) is a hierarchical routing and data dissemination protocol. LEACH divides a network domain into several sub-domains that are called clusters. Non-uniformity of cluster distribution and CHs selection without considering the positions of other sens...