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Spatial Classification Multiple Access (SCMA) is introduced as an example of using the radio connectivity among nodes for the dynamic establishment of distributed transmission schedules in wireless multi hop wireless networks. The shared channel is organized into transmission frames whose length in number of time slots is defined solely by the need to avoid hidden-terminal interference, rather than...
CSIR (Cellular Scheduling with Interest-driven Routing) is proposed for the effective dissemination of real-time and elastic traffic in wireless ad-hoc networks. CSIR is a novel cross-layer framework consisting of five components: flow-based priority queuing of packets, distributed interest-based routing, distributed transmission scheduling, a neighbor protocol, and bandwidth reservations. Nodes are...
Neighbor discovery is essential in all channel access protocols based on transmission scheduling, whether such protocols are topology-dependent or topology-independent. We propose a novel approach to neighbor discovery based on relative GPS coordinates (RGPS), extending the work by Chlamtac and Farago on topology-transparent transmission scheduling. The proposed approach attains neighbor discovery...
Geographical Classification Multiple Access (GCMA) is introduced for scheduled channel access in large wireless networks. GCMA uses the geo-spatial coordinates of nodes, together with their transmission and interference ranges, to define collision-free transmission schedules using deterministic distributed algorithms. These algorithms require each node to know only the geo-spatial coordinates of its...
The Virtual Coordinate Multiple Access (VCMA) protocol is introduced and analyzed. VCMA is a medium access control protocol that defines transmissions schedules dynamically based on the assignment and exchange of virtual coordinates relative to an elected root node in a mesh network. VCMA is shown to attain feasible transmission schedules within a finite time, and its channel access delay properties...
The Neighborhood Ordering for Medium Access with Determinism (NOMAD) protocol is introduced. NOMAD defines collision-free transmission schedules dynamically and with no need for a predefined number of time slots per transmission frame by coordinating circular permutations of the identifier of nodes in the neighborhoods shared among nodes. NOMAD is shown to attain feasible transmission schedules within...
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