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发明授权
CN1883223B 用于点对多点信道的链路自适应 有权

用于点对多点信道的链路自适应
摘要：
一种无线电信网络(20)的网络节点(28)，该网络节点使用了第一编码方案(从多个可能编码方案中选出)来对公共下行链路信道(32)上载送到多个移动站(30)的点对多点(PTM)传输进行编码。移动站(30)在公共下行链路信道(32)上接收点对多点传输，并且评估点对多点传输的链路质量。来自多个移动站(30)并与点对多点传输的链路质量相关的反馈则在公共上行链路信道(36)上提供到网络节点(28)。网络节点(28)上的控制器(48)针对与点对多点传输链路质量有关的反馈而对其在公共上行链路信道上接收的信息进行监视。网络节点(28)的控制器(48)使用该反馈来判定是否从第一编码方案改为第二编码方案，以便对到多个移动站(30)的点对多点传输进行编码。
摘要（英）：

A network node (28) of a wireless telecommunication network (20) uses a first coding scheme (selected from plural possible coding schemes) for encoding of a point-to-multipoint (PTM) transmission carried to plural mobile stations (30) on a common downlink channel (32). The mobile stations (30) receiving the point-to-multipoint transmission on the common downlink channel (32) evaluate the link quality of the point-to-multipoint transmission. Feedback from the plural mobile stations (30) regarding the link quality of the point-to-multipoint transmission is provided to the network node (28) on acommon uplink channel (36). A controller (48) at the network node (28) monitors information received on the common uplink channel for feedback regarding the link quality of the point-to-multipoint transmission. The controller (48) at the network node (28) uses the feedback to determine whether to change from the first coding scheme to a second coding scheme for the encoding of the point-to-multipoint transmission to the plural mobile stations (30).

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