Abstract: A base station (BS) for a SDMA-capable cell (C) of a radio communications system (1), adapted for: receiving precoding vector information (PMI) indicating a primary precoding vector (wPMI) in an ordered set of precoding vectors (w), receiving channel quality information (CQI) indicating a channel quality when using the primary precoding vector (wPMl) for scheduling a first user equipment (UE1), receiving channel quality degradation information (delta-CQI1 to delta-CQI4) indicating a degradation of a channel quality when scheduling a second user equipment (UE2) on the same time and frequency resources using a secondary precoding vector (wFCI) from a pre-defined ordered set of secondary precoding vectors selected in dependence of the primary precoding vector (wPMI), the base station (BS) being further adapted for: correlating the channel quality degradation information (delta-CQI1 to delta-CQI4) with corresponding secondary precoding vectors (wFCI) of the selected ordered set based on an order of reception of t

Abstract: The invention concerns a method for allocating bandwidth on demand to a constant bit rate connection (63 to 65) in a wireless MAN access network, in particular in a LMDS access network, as well as a transmitter (20) and a subscriber station (2) for such a network. The transmitter (20) sends data packets to the receiver (1); the data packets comprise a parameter indicating whether additional bandwidth is required for jitter compensation. Additional bandwidth is allocated to the connection (63 to 65) based on said parameter. The transmitter (20) set this parameter based on the time data has spent in a transmit queue assigned to the constant bit rate connection (63 to 65) at the transmitter (20).

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 invention concerns a method for allocating bandwidth on demand to a constant bit rate connection (63 to 65) in a wireless MAN access network, in particular in a LMDS access network, as well as a transmitter (20) and a subscriber station (2) for such a network. The transmitter (20) sends data packets to the receiver (1); the data packets comprise a parameter indicating whether additional bandwidth is required for jitter compensation. Additional bandwidth is allocated to the connection (63 to 65) based on said parameter. The transmitter (20) set this parameter based on the time data has spent in a transmit queue assigned to the constant bit rate connection (63 to 65) at the transmitter (20).

Abstract: The object of the invention is to provide a simplified QoS guarantee in bidirectional point-to-multipoint access networks, such as LMDS. This object is attained by a QoS controller containing at least one software module which is adapted to perform at least one QoS processing step for both the uplink and the downlink. In the case of the QoS controller according to the invention, the same QoS controller and the same software module are used for at least a major part of the connection both in the uplink and the downlink. This has the advantage, inter alia, that a nearly symmetrical behavior is achieved for the uplink and downlink.