Abstract: A method for operating a WiMAX femtocell base station, wherein the femtocell base station has an active operational mode, in which the radio interface subsystem of the femtocell base station is fully power supplied, is characterized in that a power saving mode with reduced radio interface activity is provided, wherein the femtocell base station is enabled to transit between the active operation mode and the power saving mode. Furthermore, a corresponding femtocell base station for deployment in a WiMAX network is disclosed.

Abstract: A method for interference mitigation for femtocell base stations of a WiMAX network, wherein the femtocell base station is located within the transmission range of at least one macrocell base station and/or at least one other femtocell base station, is characterized in that the femtocell base station performs downlink measurements to detect neighboring macrocell and/or femtocell base stations and reports results of the downlink measurements to at least one higher layer network controller, wherein the network controller allocates transmission parameters to the WiMAX femtocell base stations on the basis of at least the reported measurement results and the current resource occupation in the network.

Abstract: A method for operation of a WiMAX network, the network including a WiMAX macrocell network with one or more macrocell base stations and at least one femtocell base station, the macrocell base stations and the at least one femtocell base station being configured to offer connectivity to mobile stations is described. The method is characterized in that a communication scheme between the macrocell network and the at least one femtocells base station is defined according to which a direct wireless link is established between the at least one femtocell base station and one or more of the macrocell base stations located within the coverage area of the at least one femtocell base station. Furthermore, a corresponding WiMAX network is disclosed.

Abstract: Method for allowing peer-to-peer data transmission The invention relates to a method for allowing peer-to-peer data transmission between peer communication terminals. In this context, a file (D), for which multiple requests regarding retrieval have already been sent to an index server (IS) by peer communication terminals in the past, is automatically retrieved from a peer communication terminal (P3) providing this file by a storage peer communication terminal (SP). This file (D) is stored in the storage peer communication terminal (SP). The storage peer communication terminal (SP) registers as a provider of this file with the index server (IS). Upon receiving a further request relating to this file (D), the index server provides the requesting peer communication terminal with an address for the storage peer communication terminal in order to allow the requesting peer communication terminal to retrieve the file (D) from the storage peer communication terminal (SP).

Abstract: A method for transferring a queue position for a peer communication terminal is provided. This method involves a first peer communication terminal receiving a request message from a second peer communication terminal, the request message being used to request connection setup between the first and second peer communication terminals for retrieval of a file. The second peer communication terminal is then put into a file-retrieval queue on the first peer communication terminal. The first peer communication terminal sends an information message to the second peer communication terminal as soon as the second peer communication terminal has reached a predetermined position in the queue. The transmission of the information message is terminated by a proxy node before the information message reaches the second peer communication terminal. The proxy node transfers the predetermined position in the queue to a third peer communication terminal.

Abstract: The invention relates to a method for ascertaining an address for a peer communication terminal which holds a file. If peer communication terminals (P1, P2) repeatedly send request messages (N1, N2) to a first index server (IS1), with the request messages relating to a file (D) and with the first index server (IS1) not storing an address for a peer communication terminal which holds this file (D), then an interrogation device (AE) automatically ascertains an address (IP3) for a peer communication terminal (P3) which holds this file (D). This address (IP3) is transmitted to the first index server (IS1) by the interrogation device (AE). The first index server (IS1) then stores this address (IP3), so that when a further request message relating to this file appears the first index server (IS1) is able to provide this address (IP3) in response to the further request message.

Abstract: A method for making contact between a peer communication terminal and an index server for providing peer-to-peer data transmission is provided. The method involves a peer communication terminal associated with a first telecommunication network sending a make-contact message addressed to a first index server. This make-contact message is transmitted to a proxy node in the first telecommunication network. The proxy node terminates the transmission of the make-contact message, and the proxy node then prompts contact to be made between the peer communication terminal and a second index server, which is arranged in the first telecommunication network.