PROJECT TITLE :
Distributed Coordination of Co-Channel Femtocells via Inter-Cell Signaling With Arbitrary Delay
To attain high spatial reuse of spectrum resources with limited inter-layer/cell interference, co-channel femtocells should be coordinated with the underlying macro- and different femto-cells in using radio resources. While inter-cell signaling will coordinate femtocells by providing the status information of neighbor cells explicitly, signaling delay—that could result from a limited signaling rate to reduce the resulting overhead, network latency, etc.—and its impact on the behavior of distributed coordination has not been explored before. During this paper, we have a tendency to propose a replacement architecture for the distributed coordination of co-channel femtocells based on asynchronous inter-cell signaling, known as asynchronous coordination of co-channel femtocells (ACoF). ACoF improves solutions iteratively; femtocells update radio resource usage based on the received info, that typically gets outdated because of delayed signaling and asynchronous update behavior. ACoF allows each femtocell to adjust its signaling rate relying on its local conditions for fine-grained value minimization, however at the expense of upper degree of inconsistency of femtocells' data. Despite such asynchrony and inconsistency, the solution yielded by ACoF is absolute to converge to a global optimum under a certain condition of configuration parameters, that we have a tendency to prove theoretically. We design the optimization technique of per-cell signaling rate for each wired and over-the-air signaling. Finally, we present a joint muting and transmit power adjustment theme designed for ACoF and evaluate its convergence behavior and performance gain.
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