Método para reduzir um risco de parada de transmissão entre uma unidade transmissora e uma unidade receptora em um sistema de rede de comunicação, unidade transmissora, equipamento de usuário, e, nó de rede de comunicação

摘要

The present invention relates to a method and a transmitting unit for reducing a risk of transmission stalling between a transmitting unit and a receiving unit in a communication network system comprising said transmitting unit arranged to transmit data blocks to said receiving unit. Each data block comprises a block sequence number and transmitted data blocks are stored in a transmission buffer. A transmission buffer window is arranged to control the flow of retransmission of said transmitted data blocks. When the block sequence number has been acknowledged in a piggybacked acknowledgement/negative acknowledgement field, it is only set as acknowledged upon receipt of a packet uplink acknowledgement/negative acknowledgement message or a packet downlink acknowledgement/negative acknowledgement message comprising an acknowledgement for said block sequence number.