| 摘要 |
A method of transmitting non-real-time data over a wireless link from a terminal (2) to an ATM switch (6) comprising the steps of generating in the terminal (2), a plurality of ATM cells derived from a protocol data unit, marking the last ATM cell of the protocol data unit, sequentially transmitting the ATM cells over the wireless link, determining in the ATM switch for each transmitted cell, whether that cell contains an error, and sending an error message back to the terminal if an ATM cell is determined to contain an error, the terminal (2) being arranged on receipt of the error message, to cease transmitting any remaining ATM cells of the protocol data unit from which the erroneous ATM cell was derived. Also, an ATM protocol stack for wireless ATM communications in which the physical layer below the ATM layer, has been adapted to include a radio access layer, the radio access layer including a medium access control protocol layer and a partial packet discard mechanism. |
