| 摘要 |
The invention relates to a method for transmitting multicast information from at least one transmitter (BS, Tx) to a plurality of receivers (UE1, UE2, . . . UEN), comprising determining (S10) a channel quality measure (ru,s) of each receiver (UE1, UE2, . . . UEN), adapting (S60) transmission rates (Ras) of the transmitter (BS) to cause the transmitter (BS) to transmit at different rates (Ras) for different transmission resource units, particularly transmission time intervals (TTI), based on the channel quality measures (ru,s) of the plurality of receivers (UE1, UE2, . . . UEN), assigning (S20, S30) a weight value (wu,s) and a cumulative weight value (wcu,s) to each receiver out of the plurality of receivers (UE1, UE2, . . . UEN), wherein at least for a subset out of the plurality of receivers (UE1, UE2, . . . UEN) said cumulative weight value (WCu,s) is a function calculated by taking into account weight values of other receivers out of the plurality of receivers (UE1, UE2, . . . UEN), calculating (S40), for each receiver (UE1, UE2, . . . UEN), a weighted channel quality measure (wru,s) being a function of the respective cumulative weight value (wcu,s) for this receiver (UE1, UE2, . . . UEN) and its channel quality measure (ru,s), and adapting (S60) the transmission rate (Ras) such that it meets the channel quality (ru,s) of the receiver having the maximum weighted channel quality measure (wruo,s). The invention further relates to a network access node (BS, AN), comprising a transmitter (BS, Tx) adapted to transmit multicast information to a plurality of receivers (UE1, UE2, . . . UEN), said transmitter (BS, Tx) being able to transmit at different transmission rates (Ras) for different transmission resource units, particularly transmission time intervals (TTI), means for determining a channel quality measure (ru,s) for each of said plurality of receivers (UE1, UE2, . . . UEN) and a processor, said network access node (BS, AN) being adapted to perform the described method. |
