Previous work mostly employs an ideal system model that assumes fully connected processors andconcurrent communication,which leads to inaccurate and inefficient schedule results.In this paper,anew scheduling model which integrates the communication awareness was proposed.Then,a novelscheduling algorithm based on list heuristic was put forward for the new model,which can produce opti-mal schedule by serializing the communications edges.Experimental results show that the accuracy andefficiency of the new model and algorithm are significantly improved.
Because of different system capacities of base station(BS)or access point(AP)and ununiformity oftraffic distribution in different cells,quantities of new call users may be blocked in overloaded cell incommunication hot spots.Whereas in some neighboring under-loaded cells,bandwidth may be superflu-ous because there are only few users to request services.In order to raise resource utilization of the wholeheterogeneous networks,several novel load balancing strategies are proposed,which combine the call ad-mission control policy and multi-hop routing protocol of ad-hoc network for load balancing.These loadbalancing strategies firstly make a decision whether to admit a new call or not by considering some param-eters like load index and route cost,etc.,and then transfer the denied users into neighboring under-load-ed cell with suiplus channel according to optimum multi-hop routing algorithm.Simulation results showthat the proposed load balancing strategies can distribute traffics to the whole heterogeneous wireless net-works,improve the load balance index efficiently,and avoid the call block phenomenon almost absolutely.
