Signature based integrity check design for downlink grant error protection in enhanced component carriers

A method of wireless communication comprising:

• receiving a first acknowledgment message, wherein the first acknowledgment message comprises feedback information and a first bit field that includes a first signature;
• and transmitting a downlink grant based at least in part on the first acknowledgment message, wherein the downlink grant comprises a second bit field that includes the first signature;
• transmitting a data message using resources in the downlink grant;
• and receiving a second acknowledgment message comprising a second signature in response to the data message, wherein the second signature is a function of the first signature and different from the first signature.

An apparatus for wireless communication, comprising:

• a processor;
• memory in communication with the processor;
• and
• instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to:
• receive a downlink grant, wherein the downlink grant comprises a first bit field that includes a first signature;
• identify a stored first status based at least in part on the first signature;
• decode a data transmission based at least in part on the downlink grant and the stored first status;
• and
• transmit an acknowledgment message for the data transmission, wherein the acknowledgment message comprises a second bit field that includes a second signature that is a function of the first signature and different from the first signature.

An apparatus for wireless communication, comprising:

• a processor;
• memory in communication with the processor;
• and instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to:
• receive a first acknowledgment message, wherein the first acknowledgment message comprises feedback information and a first bit field that includes a first signature;
• and transmit a downlink grant based at least in part on the first acknowledgment message, wherein the downlink grant comprises a second bit field that includes the first signature, wherein the instructions are operable to cause the processor to:
• transmit a data message using resources in the downlink grant;
• and receive a second acknowledgment message comprising a second signature in response to the data message, wherein the second signature is a function of the first signature and different from the first signature.