RLP retransmission for CDMA communication systems

In a CDMA communication system with a first retransmission mechanism provided by a Radio Link Protocol (RLP) and a second retransmission mechanism provided by a hybrid automatic retransmission control function (HARQ-CF), a method for retransmitting data via the RLP, comprising:

• detecting missing RLP frames;
• initiating a dynamic timer for each RLP frame, each dynamic timer associated with a respective candidate set of ARQ channels that may be used to transmit the missing RLP frame;
• removing, from the set of ARQ channels, ARQ channels identified as conveying, at the HARQ-CF sublayer, HARQ packets associated with successfully received RLP frames;
• updating each dynamic timer based on a determination that the representative candidate set is empty;
• and
• determining whether or not each RLP frame detected to be missing is lost based on the dynamic timer maintained for the RLP frame.

A method for detecting lost frames in a communication system having a first retransmission mechanism in a first sublayer and a second retransmission mechanism in a second sublayer, the method comprising:

• initiating a dynamic timer for a missing frame detected as missing at a first sublayer, the dynamic timer associated with a candidate set of logical channels that may be used to transmit the missing frame;
• removing, from the candidate set of logical channels, logical channels through which packets associated with successfully received frames at the first sublayer have been received at a second sublayer;
• updating the dynamic timer when the candidate set is empty;
• and
• determining the missing frame is a lost frame based on the dynamic timer.

A processor for detecting lost frames in a communication system having a first retransmission mechanism in a first sublayer and a second retransmission mechanism in a second sublayer, the processor configured execute the steps of:

• initiating a dynamic timer for a missing frame detected as missing at a first sublayer, the dynamic timer associated with a candidate set of logical channels that may be used to transmit the missing frame;
• removing, from the candidate set of logical channels, logical channels through which packets associated with successfully received frames at the first sublayer have been received at a second sublayer;
• updating the dynamic timer when the candidate set is empty;
• and
• determining the missing frame is a lost frame based on the dynamic timer.

A receiver in a wireless communication system with a first retransmission mechanism in a first sublayer and a second retransmission mechanism in a second sublayer, the receiver comprising:

• a RX data processor operative to process a data transmission to provided decoded data;
• and
• a controller operative to:
• initiate a dynamic timer for a missing frame detected as missing at a first sublayer, the dynamic timer associated with a candidate set of logical channels that may be used to transmit the missing frame;
• remove, from the candidate set of logical channels, logical channels through which packets associated with successfully received frames at the first sublayer have been received at a second sublayer;
• update the dynamic timer when the candidate set is empty;
• and
• determine the missing frame is a lost frame based on the dynamic timer.