METHODS AND APPARATUS FOR PACKET DATA CONVERGENCE PROTOCOL (PDCP) TRANSMIT BUFFER HANDLING

Abstract: a wireless transmit/receive unit (wtru) includes a processor and a transceiver that receive a pdcp configuration for a split bearer. the pdcp configuration includes information about first and second discard time periods. the processor stores a first packet and a second packet in a pd-cp transmit buffer. the processor and transceiver start the first discard time period and transmit the first packet over the primary path and start the second discard time period and transmit the second packet over the secondary path. the processor and transceiver discard the first packet stored in the pdcp transmit buffer based on one of expiry of the first discard time period or the receipt of an acknowledgement (ack) for the first packet, and discard the second packet stored in the pdcp transmit buffer based on one of expiry of the second discard time period or receipt of an ack for the second packet.

Inventor(s): Oumer Teyeb, Martino Freda, Tuong Hoang

CPC Classification: H04W28/06 (Optimizing {the usage of the radio link}, e.g. header compression, information sizing {, discarding information (system modifying transmission characteristic according to link quality by modifying frame length ; dynamic adaptation of the packet size for flow control or congestion control )})

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