Abstract: There is provided a method of performing a handover of a mobile station. The method in accordance with the invention comprises the step of receiving a dataflow which comprises the downlink data traffic to the mobile station and the step of queuing the dataflow. The method in accordance with the invention comprises further the step of generating a first dataflow during handover of the mobile station from the queued dataflow, wherein the first dataflow has a dataflow rate which is below a given first rate. The first dataflow is sent towards the mobile station during handover. The method in accordance with the invention furthermore comprises the step of generating a second dataflow from the queued dataflow after completion or abortion of the handover, wherein the second dataflow has a dataflow rate which is above a given second rate. The second dataflow is sent towards the mobile station.

Abstract: A Doppler compensation method is used for radio transmission between a mobile body possibly but not exclusively a train and some base station, both mobile body and base station comprise respectively a transceiver connected to an antenna for the radio transmission. The method comprises the step of determining the direction of motion of the mobile body with respect to the active base station i.e. the base station to which a radio transmission link is just built. The method is then followed by the step to apply a constant Doppler compensation corresponding to the cancellation of the Doppler effect for a mobile body moving in the same direction at predefined limiting speed of motion (vlimit) at which a quality threshold is reached with the used radio transmission technology in the case without a Doppler compensation.

Abstract: The goal of the invention is to keep the delay of a communication signal between a moving vehicle (mobile body) and a fixed base station constant. This is achieved by a Doppler compensation method for data to be transmitted within frames via radio transmission between a mobile body and some base station, both mobile body and base station comprise respectively a transceiver connected to an antenna for the radio transmission. The method comprises the step of determining the Doppler effect acting on the frames when transmitted as a signal through that radio transmission for a given speed and direction of motion of the mobile body with respect to the base station. It is then followed by the step to apply by the transceiver some sampling procedure comprising an allocation of different time delays to the signal, the different time delays being chosen following a law adapted to compensate the determined Doppler effect.

Abstract: The invention relates to a procedure for the transmission of data in variable time slots between a controller of a packet-oriented data network on the one hand and a terminal of a user of the data network on the other hand, time slots for the data transmission being assigned to a terminal following request made by the terminal and in dependence on the transmission capacity available in the data network. In order to create the possibility of enabling known data networks for the transmission of data in variable time slots to be used also for QoS applications without restriction of the functionality, it is proposed that the data transmission rate be monitored separately for each data flow of a terminal of the data network.

Abstract: The present invention relates to a scheduler for a network element, in particular for a base station of a communications network, wherein resources required for transmitting data within said communications network are scheduled and/or granted by said scheduler depending on a request for said resources. Said scheduler comprises a look ahead generator for generating look ahead requests depending on requests and/or on look ahead requests previously received by said scheduler. The present invention also relates to a method of operating a scheduler.

Abstract: The present invention relates to a method of operating a communications network, wherein resources required for transmitting data within said communications network, in particular for transmitting data from a subscriber station to a first base station, are granted depending on a request for said resources. At least one further base station is provided with scheduling information related to said request for said resources.

Abstract: The invention relates to a procedure for the allocation of time slots for a transmission of data in variable time slots between a controller of a packet-oriented data network on the one hand and a terminal of a user of the data network on the other hand. The time slots are assigned to a terminal for a data flow following request made by the terminal and in dependence on the transmission capacity available in the data network, and are temporarily stored in a ring buffer before they are allocated to the terminal at a predefinable allocation instant. In order to simplify and accelerate the allocation of time slots in such a data network, it is proposed that a temporal write range be defined in the ring buffer by a variable first upper time threshold and a variable first lower time threshold.

Abstract: A method for assigning transmitting grants to terminals of a communications network serving the bi-directional transfer of packet-orientated data with a management system and a central station is cited. In the central station there is an access control unit regulating the data traffic from the terminals to the central station, to which access control unit information on data ready for transmitting transmitted by the terminals is fed and by which transmitting grants are transferred to the terminals according to a defined, standardised protocol. For a generally valid method irrespective of the type of communications network the access control unit is equipped with a first adaptation module, a processor and a second adaptation module. The information from the terminals is fed to the first adaptation module. This feeds to the processor identifiers of the individual terminals and the number of bits or bytes reported as ready for transmitting.

Abstract: The invention relates to a procedure for the transmission of data in variable time slots between a controller of a packet-oriented data network on the one hand and a terminal of a user of the data network on the other hand, time slots for the data transmission being assigned to a terminal following request made by the terminal and in dependence on the transmission capacity available in the data network. In order to create the possibility of enabling known data networks for the transmission of data in variable time slots to be used also for QoS applications without restriction of the functionality, it is proposed that the data transmission rate be monitored separately for each data flow of a terminal of the data network.

Abstract: The object of the invention is to create a router which has an enhanced processing speed. According to the invention, before access through a readout unit, the pointers for information packets stored in the buffer memory are arranged as required. If an overflow is imminent in a buffer memory area, for example, then individual pointers are selected and removed from the buffer memory area. The selected pointers are shifted into an additional buffer memory area, for example. This additional buffer memory area is then preferentially read out, so that the selected pointers are read out before the pointers in the buffer memory area. The criterion for the selection of a pointer is, for example, an expired reactivation time or a buffer memory area that is filled above a threshold value.

Abstract: The object of the invention is to create a router which facilitates a simplified load balancing. The router according to the invention contains at least one buffer memory for the intermediate storage of pointers for information packets in at least two different buffer memory areas, a readout unit for reading out the different buffer memory areas one after the other in predetermined time windows, as well as at least one RED processing unit, and is characterised in that a feedback is provided from the readout unit to at least one RED processing unit, in order to control the activation and de-activation of the RED processing unit. According to the invention, indirect information about the occupancy levels of the buffer memory areas is passed via the feedback loop to the at least one RED processing unit. Advantageously, the readout unit operates with the weighted round robin mechanism and transmits information about buffer memory locations processed in the time slots to the at least one RED processing unit.