Chengnian Long

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One of the distinctive features in a wireless ad hoc network is lack of any central controller or single point of authority, in which each node/link then makes its own decisions independently. Therefore, fully cooperative behaviors, such as cooperation for increasing system capacity, mitigating interference for each other, or honestly revealing private(More)
In this letter, we investigate the local stability in equilibrium for Internet congestion control algorithm proposed by Low (IEEE/ACM TRANSACTIONS ON NETWORKING, 1999). The network consists of multisource and one-bottleneck link with heterogenous time-varying propagation delays. Linear matrix inequality (LMI) stability criteria is presented for discrete(More)
In this paper, we study the theoretical problem of the end-to-end rate assignment for multi-hop wireless networks. Specifically, we consider the problem of joint congestion control, random access and power control design with multihop transmissions and interference-limited link rates. In order to address both the end-to-end throughput maximization and(More)
We observe that the desired utilization parameter γ in AVQ algorithm has an influence on the dynamics of queue and link utilization. It is difficult to achieve a fast system response and high link utilization simultaneously using a constant value γ. An adaptive setting method for γ is proposed according to the instantaneous queue size and the given(More)
We consider a distributed joint random access and power control scheme for interference management in wireless ad hoc networks. To derive decentralized solutions that do not require any cooperation among the users, we formulate this problem as non-cooperative joint random access and power control game, in which each user minimizes its average transmission(More)
In a camera network, one fundamental research issue is how well the target field is monitored, which is referred as the coverage problem. A good coverage method can reduce the cost and allow the monitor system to scale. The existing work on coverage problem use the k-coverage as its model and coverage percentage as its optimal metric. With this model and(More)
Distributed spectrum sharing with minimum quality of service (QoS) requirement and interference temperature (IT) constraint is studied in this paper. This problem can be formulated as a non-convex optimization problem with conflicting constraints. To make solutions to this problem feasible, random access and power control are jointly considered. The(More)