US 12,432,011 B2Granted

Forward error correction encoding with reliability differentiation

AssigneeQUALCOMM Incorporated

InventorsKanke Wu, Bin Tian

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Abstract

This disclosure provides methods, devices, and systems for forward error correction encoding and modulation with reliability differentiation. In some examples, a transmitting wireless communication device may use a concatenated encoding technique to generate a set of encoded bits that conveys both information bits of a first priority and information bits of a second priority lower than the first priority. In other examples, the transmitting device may use a parallel encoding technique to generate a first set of encoded bits that conveys information bits of the first priority and a second set of encoded bits that conveys information bits of the second priority. According to aspects of the disclosure, the transmitting device can map encoded bits corresponding to information bits of the first priority to relatively higher reliability bit positions of a modulation constellation.

Claims34

Dependent claims

A method for wireless communication by a wireless communication device, comprising:

performing a first forward error correction encoding operation on a first set of information bits associated with a first priority that results in a first set of encoded bits that includes the first set of information bits and a first set of parity bits;
performing a second forward error correction encoding operation on a second set of information bits and at least a portion of the first set of encoded bits that includes at least a portion of the first set of information bits and that does not include the first set of parity bits, the second set of information bits associated with a second priority lower than the first priority, the performance of the second forward error correction encoding operation resulting in a second set of encoded bits that includes the first set of information bits, the second set of information bits, and a second set of parity bits;
mapping the second set of encoded bits to a set of modulation symbols, the mapping comprising:
mapping the first set of information bits to relatively higher reliability bit positions of a modulation constellation;
and
mapping the second set of information bits to relatively lower reliability bit positions of the modulation constellation;
modulating the set of modulation symbols onto a carrier signal;
and
transmitting the modulated carrier signal over a wireless channel;
and
mapping a portion of the first set of encoded bits that includes the first set of parity bits omitted from the second set of encoded bits to relatively higher reliability bit positions of the modulation constellation of the set of modulation symbols.

8 more elements

A wireless communication device, comprising:

at least one processor;
and
at least one memory communicatively coupled with the at least one processor and storing processor-readable code that, when executed by the at least one processor, is configured to:
perform a first forward error correction encoding operation on a first set of information bits associated with a first priority that results in a first set of encoded bits that includes the first set of information bits and a first set of parity bits;
perform a second forward error correction encoding operation on a second set of information bits and at least a portion of the first set of encoded bits that includes at least a portion of the first set of information bits and that does not include the first set of parity bits, the second set of information bits associated with a second priority lower than the first priority, the performance of the second forward error correction encoding operation resulting in a second set of encoded bits that includes the first set of information bits, the second set of information bits, and a second set of parity bits;
map the second set of encoded bits to a set of modulation symbols, the mapping comprising:
mapping the first set of information bits to relatively higher reliability bit positions of a modulation constellation;
and
mapping the second set of information bits to relatively lower reliability bit positions of the modulation constellation;
modulate the set of modulation symbols onto a carrier signal;
and
transmit the modulated carrier signal over a wireless channel;
and
map a portion of the first set of encoded bits that includes the first set of parity bits omitted from the second set of encoded bits to relatively higher reliability bit positions of the modulation constellation of the set of modulation symbols.

11 more elements

A method for wireless communication by a wireless communication device, comprising:

parsing a set of information bits into a first set of information bits associated with a first priority and a second set of information bits associated with a second priority lower than the first priority according to a bit prioritization parameter associated with a state of a wireless channel;
performing a first forward error correction encoding operation on the first set of information bits that results in a first set of encoded bits that includes the first set of information bits and a first set of parity bits;
performing a second forward error correction encoding operation on the second set of information bits that results in a second set of encoded bits that includes the second set of information bits and a second set of parity bits;
mapping the first set of encoded bits and the second set of encoded bits to a set of modulation symbols, the mapping comprising, in accordance with the bit prioritization parameter, mapping the first set of information bits to relatively higher reliability bit positions of a modulation constellation and mapping the second set of information bits to relatively lower reliability bit positions of the modulation constellation;
modulating the set of modulation symbols onto a carrier signal;
and
transmitting the modulated carrier signal over the wireless channel.

4 more elements

A wireless communication device, comprising:

at least one processor;
and
at least one memory communicatively coupled with the at least one processor and storing processor-readable code that, when executed by the at least one processor, is configured to:
parse a set of information bits into a first set of information bits associated with a first priority and a second set of information bits associated with a second priority lower than the first priority according to a bit prioritization parameter associated with a state of a wireless channel;
perform a first forward error correction encoding operation on the first set of information bits that results in a first set of encoded bits that includes the first set of information bits and a first set of parity bits;
perform a second forward error correction encoding operation on the second set of information bits that results in a second set of encoded bits that includes the second set of information bits and a second set of parity bits;
map the first set of encoded bits and the second set of encoded bits to a set of modulation symbols, the mapping comprising, in accordance with the bit prioritization parameter, mapping the first set of information bits to relatively higher reliability bit positions of a modulation constellation and mapping the second set of information bits to relatively lower reliability bit positions of the modulation constellation;
modulate the set of modulation symbols onto a carrier signal;
and
transmit the modulated carrier signal over the wireless channel.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/821,695Filed 23 Aug 2022
Published: US 2024/0072932 A129 Feb 2024
Granted: 30 Sep 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification13 codes

H04L 1/0061
Systems characterized by the type of code used: error detection codes
H04L 1/007
Systems characterized by the type of code used: unequal error protection
H03M 13/251
Error detection or forward error correction by signal space coding, i.e. adding redundancy in the signal constellation, e.g. Trellis Coded…: with…
H03M 13/255
Error detection or forward error correction by signal space coding, i.e. adding redundancy in the signal constellation, e.g. Trellis Coded…: with…