ORDER NUMBER OF ENCRYPTION FOR PROTOCOL OF RELATED LEVEL AT TRANSFER OF DATABASES

摘要

1. A method for transmitting packet data with less overhead, comprising the steps of:! signaling the first serial number from the transmitting device to the receiving device; ! processing a plurality of service data units (SDUs) in a top-level protocol of a transmitting device with a corresponding one of a plurality of transmitting device serial numbers ordered from a first serial number; and! form and transmit to the receiver a plurality of packet data units (PDUs) by means of a lower level protocol of a transmitting device, including a plurality of SDUs of a protocol of a high level of a transmitting device, each of which is associated with a transmitted difference value in a sequence, for recovering a corresponding one of a plurality of serial numbers a transmitter at the receiver to retrieve multiple SDUs. ! 2. The method according to claim 1, further comprising the step of generating and transmitting to the receiving device a PDU directly corresponding to the SDU, wherein the lower level protocol of the transmitting device includes a transmitted difference value in a sequence mapped sequentially to a plurality of serial numbers of the transmitting device. ! 3. The method according to claim 2, further comprising the step of generating a transmitted sequence value by excluding the initial part of each serial number of the transmitting device. ! 4. The method according to claim 1, in which the value of the difference in the sequence counts the number of top-level PDUs transmitted from the moment the first sequence number was signaled and