Techniques to reduce false detection of control channel messages in a wireless network
AssigneeIntel Corporation
InventorsYi Hsuan, Hujun Yin
Life of this patent
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Abstract
A method and system of reducing false detection of control channel messages in a wireless communication system. This facilitates blind detection of control channel messages in the wireless communication network. In one embodiment of the invention, the control messages in the wireless communication system are randomized or scrambled to minimize or lower the probability of false detection of the control channel messages. The control channel message includes, but is not limited to, an Assignment Advanced Media Access Protocol (A-A-MAP) Information Element (IE) and the like. In one embodiment of the invention, the contents of the A-A-MAP IE are randomized or scrambled before encoding into A-A-MAP symbols.
Claims23
An apparatus comprising:
- a memory;
- a processor coupled with the memory, the processor to:
- generate an Assignment Advanced Media Access Protocol (A-A-MAP) Information Element (IE) associated with an advanced mobile station (AMS);
- and
- generate a randomized A-A-MAP IE comprising a Pseudo Random Binary Sequence (PRBS) based at least in part on the A-A-MAP IE and a A-A-MAP Cyclic Redundancy Check (CRC) mask.
An apparatus comprising:
- a radio to receive a randomized A-A-MAP IE comprising a Pseudo Random Binary Sequence (PRBS) based at least in part on a A-A-MAP IE and a A-A-MAP Cyclic Redundancy Check (CRC) mask;
- and
- a processor coupled with the radio and configured to:
- descramble the received randomized A-A-MAP IE to obtain a descrambled A-A-MAP IE;
- and
- determine whether the descrambled A-A-MAP IE is corrupted;
- wherein the processor to descramble the received randomized A-A-MAP IE to obtain the descrambled A-A-MAP is to perform an exclusive OR operation on the received randomized A-A-MAP IE with the CRC mask to generate the descrambled A-A-MAP.
A computer-implemented method comprising:
- constructing, by the computing device, a plurality of Assignment Advanced Media Access Protocol (A-A-MAP) symbols by encoding an A-A-MAP Information Element (IE), wherein the A-A-MAP IE is randomized;
- and
- generating, by the computing device, a Pseudo Random Binary Sequence (PRBS) based at least in part on the A-A-MAP IE and a A-A-MAP Cyclic Redundancy Check (CRC) mask, wherein the randomized A-A-MAP IE comprises the generated PRBS.
A computer-implemented method comprising:
- descrambling, by the computing device, a received randomized A-A-MAP IE to obtain a descrambled A-A-MAP IE, the randomized A-A-MAP IE comprising a Pseudo Random Binary Sequence (PRBS) based at least in part on a A-A-MAP IE and a A-A-MAP Cyclic Redundancy Check (CRC) mask;
- and
- determining, by the computing device, whether the descrambled A-A-MAP IE is corrupted;
- wherein determining whether the descrambled A-A-MAP IE is corrupted comprises:
- determining, by the computing device, whether one or more parts of the descrambled A-A-MAP IE are set according to a pre-determined value or set beyond a pre-determined value, wherein the one or more parts of the descrambled A-A-MAP IE comprise one or more of a reserved bit field, and a fixed value field of the descrambled A-A-MAP IE.
Dependencies are inferred from the claim text.