Hardq synchronization method for lte

A method for improving link layer protocol synchronization between a transmitter and receiver in a wireless communication system, the method comprising:

• receiving a new data indicator and a corresponding protocol data unit at the receiver;
• detecting a protocol synchronization error between the transmitter and the receiver based on the new data indicator;
• and
• transmitting a reset message to the transmitter responsive to the detected protocol synchronization error to correct the protocol synchronization error between the transmitter and the receiver.

A transmitter in communication with a remote receiver in a wireless communication system, the transmitter comprising a transmit processor configured to:

• transmit a plurality of successive protocol data units from the transmitter to the receiver, each protocol data unit having a corresponding new data indicator to distinguish each succeeding protocol data unit from a preceding protocol data unit;
• receive a reset request from the receiver indicating that a protocol synchronization error has occurred;
• and
• abort transmission of a current protocol data unit responsive to said reset request and transmit the succeeding protocol data unit to said receiver with the corresponding new data indicator to distinguish the succeeding protocol data unit from the aborted protocol data unit.

A receiver in communication with a remote transmitter in a wireless communication system, the receiver comprising a receive processor configured to:

• receive a new data indicator and a corresponding protocol data unit at the receiver;
• detect a protocol synchronization error between the receiver and the remote transmitter based on the new data indicator;
• and
• transmit a reset message to the transmitter responsive to the detected protocol synchronization error to correct a protocol synchronization error between the transmitter and the receiver.

A method for improving HARQ link layer protocol synchronization between a transmitter and a receiver in a wireless communication system, the method comprising:

• transmitting an explicit scheduling grant to the transmitter;
• evaluating a protocol data unit received from the transmitter for errors;
• and
• transmitting a subsequent explicit scheduling grant to the transmitter based on the error evaluation.

A receiver in communication with a remote transmitter in a wireless communication system, the receiver comprising a receive processor configured to:

• transmit an explicit scheduling grant to the transmitter;
• evaluate a protocol data unit received from the transmitter for errors;
• and
• transmit a subsequent explicit scheduling grant to the transmitter based on the error evaluation.