Abstract: The invention relates to an apparatus including at least one processor and at least one memory including a computer program code, the at least one memory and the computer program code con-figured to, with the at least one processor, cause the apparatus at least to: search for feasible component carriers by measurements, and if at least one feasible component carrier is found, take it into use; select at least one home node for negotiations for obtaining resources, the selection being based on the measurements, and negotiate for obtaining resources, if no feasible component carriers are found; take into use at least one feasible component carrier obtained based on the negotiations, if at least one feasible component carrier is obtained; and take into use at least one component carrier which is closest feasible, if no feasible component carriers are obtained.

Abstract: A spectrum allocation method for a cellular network is presented. The method includes: abstracting a cellular network into an interference pattern using a graph theory-based spectrum distribution model; a network node establishing a stakeholder list to represent whether a spectrum can be shared with other network nodes; by obtaining stakeholder lists from other network nodes, calculating a fairness coefficient and determining a lower bound value for the number of spectrum resources which are used; meanwhile, each network node sending out a value related to the fairness coefficient, thereby enables calculate an upper bound value for the number of resources which can be obtained according to the obtained information, to effectively compete for free resources.

Abstract: A spectrum allocation method for a cellular network is presented. The method includes: abstracting a cellular network into an interference pattern using a graph theory-based spectrum distribution model; a network node establishing a stakeholder list to represent whether a spectrum can be shared with other network nodes; by obtaining stakeholder lists from other network nodes, calculating a fairness coefficient and determining a lower bound value for the number of spectrum resources which are used; meanwhile, each network node sending out a value related to the fairness coefficient, thereby enables calculate an upper bound value for the number of resources which can be obtained according to the obtained information, to effectively compete for free resources.

Abstract: The invention relates to an apparatus including at least one processor and at least one memory including a computer program code, the at least one memory and the computer program code con-figured to, with the at least one processor, cause the apparatus at least to: search for feasible component carriers by measurements, and if at least one feasible component carrier is found, take it into use; select at least one home node for negotiations for obtaining resources, the selection being based on the measurements, and negotiate for obtaining resources, if no feasible component carriers are found; take into use at least one feasible component carrier obtained based on the negotiations, if at least one feasible component carrier is obtained; and take into use at least one component carrier which is closest feasible, if no feasible component carriers are obtained.