Muhammed Salamah

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The evolution of mobile multimedia services outlines a trend towards the coexistence of wireless overlay networks. These networks have overlaid coverage areas and are composed of a hierarchical structure ranging from in-room to in-building, campus, metropolitan, and wide-areas. For these networks to work as a seamless inter-working, optimal mobility(More)
A new efficient algorithm based on time of arrival to determine the position of a mobile object (MO) in a wireless environment is proposed. Since all operations in our algorithm are simple add and shift operations, it can be easily implemented in the MO’s firmware or hardware to reduce the number of instructions and computational cost involved in the(More)
In this paper, a time-threshold based multi-guard bandwidth allocation scheme for voice calls is presented. The main idea of the new scheme is based on monitoring the elapsed real time of handoff calls and according to a time threshold (t<sub>e</sub>), a handoff call is either slightly-prioritized or fully-prioritised. A slightly-prioritized handoff call(More)
The statistical multiplexing of sources with diverse traffic characteristics in ATM networks necessitates the use of some policing mechanisms, especially sources with bursty trafJic characteristics. Because of the statistical nature of burstiness, the policing of these sources is dificult and the known policing mechanisms cannot control them effectively.(More)
In this paper, an adaptive channel reservation scheme for multi-class traffic is proposed to ensure the quality of service for multimedia wireless cellular networks. Although different numbers of guard channels are reserved for the handoff calls of different traffic classes, new calls can access these channels with a certain probability determined by the(More)
In this paper, we proposed a scheme to extend the lifetime of a wireless sensor network, in which each sensor node decides whether to transmit a message or not and with what range to transmit the message, based on its own energy reserve level and the information contained in each message. The information content in each message is determined through a(More)