Data packet format

A method of encoding a plurality of high-level data link control data frames to allow identification and re-transmission of only the ones of said plurality of high-level data link control data frames having an error, comprising the steps of:

• providing a control byte in one of said plurality of high-level data link control data frames at a transmitter having a transmit toggle bit and a plurality of transmit sequence number bits;
• associating one of said plurality of high-level data link control data frames with said transmit toggle bit and said transmit sequence number bits in said control byte at said transmitter and transmitting said one of said plurality of high-level data link control data frames to a receiver;
• and
• receiving said hihg-level data link control data frame at said receiver and writing said transmit toggle bit into an address byte based on the value of said transmit sequence number and transmitting said address byte to said transmitter for error determination.

A method of creating a plurality of packets for transmission over a communication link such that identification and re-transmission of only the ones of said plurality of packets having an error will occur, comprising the steps of:

• providing a control byte in said plurality of packets at a transmitter having a transmit toggle bit, at least one logical index bit and at least one transmit sequence number bit;
• providing an address byte at said transmitter having a plurality of individual bits for identifying by a receiver each of said plurality of packets;
• associating at said transmitter each of said plurality of packets with said logical channel index bit, transmit toggle bit and transmit sequence number bit and transmitting said packets to said receiver;
• and
• receiving said plurality of packets at said receiver and writing said transmit toggle bit to said receive toggle bits and transmitting said receive toggle bits to said transmitter for error determination.