Method and apparatus for optimized harq feedback with configured measurement gap

An apparatus for wireless communication, comprising:

• means for receiving, at a user equipment (UE), data on a transport channel from a network;
• means for determining whether transmission of an acknowledgement message responsive to the received data falls in a measurement gap for the UE;
• and
• means for, upon determining that the transmission of the acknowledgement message falls in the measurement gap, and prior to receiving from the network a retransmission grant on a first control channel for the data, sending the acknowledgement message on a second control channel in a sub-frame following the measurement gap, wherein the first control channel is associated with the second control channel.

An apparatus for wireless communication, comprising:

• at least one processor;
• and
• a memory coupled to the at least one processor,
• wherein the at least one processor is configured to execute instructions stored in the memory to perform operations including:
• receiving, at a user equipment (UE), data from a network on a transport channel;
• determining whether transmission of an acknowledgement message responsive to the received data falls in a measurement gap for the UE;
• and
• upon determining that the transmission of the acknowledgement message falls in the measurement gap, prior to receiving from the network a retransmission grant on a first control channel for the data, sending the acknowledgement message on a second control channel in a sub-frame following the measurement gap, wherein the second control channel is associated with the first control channel.

A method of wireless communication, comprising:

• sending a transmission grant for downlink data on a first control channel from a network to a user equipment (UE);
• sending the downlink data to the UE on a transport channel associated with the first control channel;
• determining whether transmission of an acknowledgement message by the UE in response to the downlink data falls in a measurement gap;
• and
• upon determining that the transmission of the acknowledgement message by the UE with respect to the downlink data falls in the measurement gap, delaying sending of a retransmission grant for the downlink data to the UE on the first control channel, and
• receiving the acknowledgement message from the UE in response to the downlink data on a second control channel in a sub-frame following the measurement gap, wherein the second control channel is associated with the first control channel.