Patent ID: 8331399
Filing Date: 2012-12-11
Classification: H04L

Abstract:
1. A method of processing data for transmission, comprising: receiving a first sequence number assigned to a first protocol data unit (PDU) by a first protocol; using the first sequence number from the first protocol at a second protocol, wherein the first protocol is above the second protocol in a protocol stack; receiving the first PDU from the first protocol as a service data unit (SDU) at the second protocol; resetting a sequence numbering of the second protocol at handover or connection setup; determining a delta based on a difference between a sequence numbering for the first protocol and the sequence numbering for the second protocol after resetting the sequence numbering; determining a second sequence number for the SDU based on the first sequence number for the first PDU and the delta; and forming a second PDU at the second protocol based on the SDU.