Patent ID: 9094199
Filing Date: 2015-07-28
Classification: H04L,H04W

Abstract:
1. An arrangement in a base station for handling an acknowledgement/not-acknowledgement (ACK/NAK) message from a terminal, the base station and the terminal in a telecommunication system, the arrangement comprising: a sending unit configured to send a number of downlink subframes including transport blocks to the terminal and to signal to the terminal in each downlink subframe a downlink assignment index (DAI) that represents a number of previous assigned downlink subframes and that enables the terminal to establish if any downlink subframe transmitted by the base station has been missed by comparing a number k of received downlink assignments with a DAI; and a receiving unit configured to receive from the terminal for the k downlink assignments one encoded ACK message that includes k, the number of downlink assignments detected by the terminal, when each transport block in the downlink subframes in which the terminal has detected a downlink assignment is estimated as correctly received by the terminal,