Method for eliminating misconcatenation of partial packets in aal2 and partial packet with channel identifier

摘要

A method and data structure for preventing the misconcatenation of partial packets when an even number of packets are lost over the network. A channel identifier code is added to the head of a remainder partial packet to allow the remainder partial packet to reassembled with a prior partial packet having the same channel identifier code. The method includes the steps of determining whether each packet will be divided into a first partial packet and a remainder partial packet at an ATM cell boundary, adding a CID at the beginning of each remainder partial packet, assembling the first and remainder partial packets into ATM cells, transmitting the ATM cells, receiving the ATM cells, verifying whether a first partial packet and a remainder partial packet in the received ATM cells have the same CID and assembling the first partial packet and the remainder partial packet into a single packet when the CIDs match. The method may also includes the steps of discarding the first and remainder partial packets when the CIDs do not match or sending the first partial packet to a user identified by the CID for the first partial packet and the remainder partial packet to a user identified by the CID for the remainder partial packet. The CID comprises a one byte code. The data structure for the ATM cell includes a header and a payload assembled to the header, the payload comprising at least one packet, wherein the at least one packet comprises a remainder partial packet having a channel identifier code attached thereto to identify the user for the remainder partial packet.