Distributed Assignment Algorithms for Multihop Packet Radio Networks
IEEE Transactions on Computers
A cross-layer load-independent link cost metric for wireless mesh networks
CoNEXT '07 Proceedings of the 2007 ACM CoNEXT conference
| Hi-index | 0.00 |
In this paper, we develop a cross-layer based joint algorithm for power control and scheduling. We applied the algorithm in CDMA wireless adhoc networks to determine the optimum set of admissible users with optimum transmitting power level, so as to minimize the interference level and call rejection rate. The multiple access problem is solved via two alternating phases, namely scheduling and power control. We introduce the notion of power control as part of a contention-based multiple access protocol that characterizes successful transmissions depending on a set of signal-to-interference-and-noise ratio (SINR) constraints (which directly translates to quality of service (QoS) constraints on the bit-error rate (BER) at individual receivers). The scheduling algorithm is essential to admit the transmissions of static as well as mobile users of multi service classes, in order to eliminate strong levels of interference that cannot be overcome by power control. By simulation experiments, we evaluate the performance of our algorithm in a set of admissible and nonadmissible users and show that power control algorithm converges for a set of admissible users.