Patent ID: 7729719

Claim:
A telecommunications device comprising: a transceiver which enables the device to communicate over an air interface; a radio link control (RLC) entity which forms uplink RLC protocol data units (PDUs) for transmission over the air interface and which receives downlink RLC protocol data units (PDUs) over the air interface; a radio link control (RLC) buffer memory configured to include a transmitter buffer for storing the uplink RLC protocol data units (PDUs) and a receiver buffer for storing the downlink RLC protocol data units (PDUs); and characterized by: RLC reconfiguration logic means which is arranged to reconfigure at least one of a size of a transmitter buffer window and a size of a receiver buffer window by implementing a strategy for handling at least one of (a) downlink RLC protocol data units (PDUs) which are outside a new receiver buffer window; and (2) uplink RLC protocol data units (PDUs) which are either outside a new transmitter window or whose receipt by the radio access network has not been positively acknowledged.