Granted Patent B2

US 12,470,451 · App. 18/256,724 · Granted Nov 11, 2025

Inventors: Liangming Wu (Beijing, CN); Changlong Xu (Beijing, CN); Kangqi Liu (San Diego, CA); Jian Li (Shanghai, CN); Ruiming Zheng (Beijing, CN); Hao Xu (Beijing, CN); Ori Shental (Marlboro, NJ)

Assignee: QUALCOMM Incorporated

H04L27/3405H04L1/0042H04L1/0068

Abstract

Claims (79)

1 . A method of wireless communication, comprising:

receiving a first source information sequence representing a first message for transmission;

encoding the first source information sequence based on a systematic-type code based on probabilistic constellation shaping being applied, wherein encoding the first source information sequence based on the systematic-type code comprises setting a value of a first puncturing parameter to 0, the first puncturing parameter relating to puncturing a systematic portion of the first message;

generating a first sequence of symbols representing the first message for transmission; and

transmitting a first waveform based on the first sequence of symbols.

2 . The method of claim 1 , further comprising:

receiving configuration information relating to a modulation scheme or coding scheme; and

encoding the first source information sequence based on the systematic-type code based on the configuration information comprising an indication relating to probabilistic constellation shaping.

3 . The method of claim 2 , wherein the indication relating to probabilistic constellation shaping comprises at least one of:

an explicit indication to apply or not to apply probabilistic constellation shaping; or

one or more constellation shaping parameters.

4 . The method of claim 1 ,

receiving a second source information sequence representing a second message for transmission; and

encoding the second source information sequence based on a non-systematic-type code based on probabilistic constellation shaping not being applied, wherein encoding the second source information sequence based on the non-systematic-type code comprises setting a value of a second puncturing parameter to a nonzero value.

5 . The method of claim 4 , further comprising:

receiving configuration information relating to a modulation scheme or coding scheme; and

encoding the second source information sequence based on the non-systematic-type code based on the configuration information not comprising an indication relating to probabilistic constellation shaping, or comprising an explicit indication not to apply probabilistic constellation shaping.

6 . The method of claim 4 ,

wherein encoding the first source information sequence based on the systematic-type code comprises utilizing a first base graph, and

wherein encoding the second source information sequence based on the non-systematic-type code comprises utilizing a second base graph, different from the first base graph.

7 . The method of claim 1 , wherein encoding the first source information sequence based on the systematic-type code based on probabilistic constellation shaping being applied comprises encoding the first source information sequence, with a low density parity check (LDPC) encoder, based on the systematic-type code based on probabilistic constellation shaping being applied.

8 . A method of wireless communication, comprising:

generating a set of probabilistically-shaped symbols corresponding to at least a first portion of a source information sequence;

generating a pre-encoding sequence corresponding to at least a second portion of the source information sequence;

applying error correction coding to the pre-encoding sequence to generate an encoded sequence comprising a set of systematic bits and a set of parity bits;

generating a first set of non-probabilistically-shaped symbols corresponding to at least a portion of the set of parity bits;

replacing a portion of the set of probabilistically-shaped symbols with the set of non-probabilistically shaped symbols to generate an output sequence; and

modulating a waveform based on the output sequence.

9 . The method of claim 8 , further comprising:

generating a binary sequence based on the set of probabilistically-shaped symbols,

wherein the pre-encoding sequence comprises a concatenation of the second portion of the source information sequence and the binary sequence based on the probabilistically-shaped symbols.

10 . The method of claim 9 , wherein the pre-encoding sequence comprises the binary sequence based on the probabilistically-shaped symbols sequentially preceding the second portion of the source information sequence.

11 . The method of claim 8 , further comprising:

generating a second set of non-probabilistically shaped symbols corresponding to at least a portion of the set of systematic bits; and

puncturing a subset of symbols of the set of probabilistically-shaped symbols,

wherein the replacing the portion of the set of probabilistically-shaped symbols further comprises determining that the puncturing applies to no greater than a number of symbols corresponding to the second set of non-probabilistically shaped symbols.

12 . A wireless communication apparatus, comprising:

at least one processor;

at least one memory communicatively coupled to the at least one processor; and

a transceiver communicatively coupled to the at least one processor,

wherein the at least one processor is configured to cause the wireless communication apparatus to:

receive a first source information sequence representing a first message for transmission;

encode the first source information sequence based on a systematic-type code based on probabilistic constellation shaping being applied, wherein to encode the first source information sequence based on the systematic-type code, the at least one processor is further configured to cause the wireless communication apparatus to set a value of a first puncturing parameter to 0, the first puncturing parameter relating to puncturing a systematic portion of the first message;

generate a first sequence of symbols representing the first message for transmission; and

transmit, via the transceiver, a first waveform based on the first sequence of symbols.

13 . The wireless communication apparatus of claim 12 , wherein the at least one processor is further configured to cause the wireless communication apparatus to:

receive, via the transceiver, configuration information relating to a modulation scheme or coding scheme; and

encode the first source information sequence based on the systematic-type code based on the configuration information comprising an indication relating to probabilistic constellation shaping.

14 . The wireless communication apparatus of claim 13 , wherein the indication relating to probabilistic constellation shaping comprises at least one of:

an explicit indication to apply or not to apply probabilistic constellation shaping; or

one or more constellation shaping parameters.

15 . The wireless communication apparatus of claim 12 , wherein the at least one processor is further configured to cause the wireless communication apparatus to receive a second source information sequence representing a second message for transmission; and

encode the second source information sequence based on a non-systematic-type code based on probabilistic constellation shaping not being applied, wherein to encode the second source information sequence based on the non-systematic-type code, the at least one processor is further configured to cause the wireless communication apparatus to set a value of a second puncturing parameter to a nonzero value.

16 . The wireless communication apparatus of claim 15 , wherein the at least one processor is configured to cause the wireless communication apparatus to:

receive configuration information relating to a modulation scheme or coding scheme; and

encode the second source information sequence based on the non-systematic-type code based on the configuration information not comprising an indication relating to probabilistic constellation shaping, or comprising an explicit indication not to apply probabilistic constellation shaping.

17 . The wireless communication apparatus of claim 15 ,

wherein to encode the first source information sequence based on the systematic-type code, the at least one processor is further configured to cause the wireless communication apparatus to utilize a first base graph, and

wherein to encode the second source information sequence based on the non-systematic-type code, the at least one processor is further configured to cause the wireless communication apparatus to utilize a second base graph, different from the first base graph.

18 . The wireless communication apparatus of claim 12 , wherein to encode the first source information sequence based on the systematic-type code based on probabilistic constellation shaping being applied, the at least one processor is configured to cause the wireless communication apparatus to encode the first source information sequence, with a low density parity check (LDPC) encoder, based on the systematic-type code based on probabilistic constellation shaping being applied.

19 . A wireless communication apparatus, comprising:

at least one processor;

at least one memory communicatively coupled to the at least one processor; and

a transceiver communicatively coupled to the at least one processor,

wherein the at least one processor is configured to cause the wireless communication apparatus to:

generate a set of probabilistically-shaped symbols corresponding to at least a first portion of a source information sequence;

generate a pre-encoding sequence corresponding to at least a second portion of the source information sequence;

apply error correction coding to the pre-encoding sequence to generate an encoded sequence comprising a set of systematic bits and a set of parity bits;

generate a first set of non-probabilistically-shaped symbols corresponding to at least a portion of the set of parity bits;

replace a portion of the set of probabilistically-shaped symbols with the set of non-probabilistically shaped symbols to generate an output sequence; and

modulate, via the transceiver, a waveform based on the output sequence.

20 . The wireless communication apparatus of claim 19 , wherein the at least one processor is further configured to cause the wireless communication apparatus to:

generate a binary sequence based on the set of probabilistically-shaped symbols,

wherein the pre-encoding sequence comprises a concatenation of the second portion of the source information sequence and the binary sequence based on the probabilistically-shaped symbols.

21 . The wireless communication apparatus of claim 20 , wherein the pre-encoding sequence comprises the binary sequence based on the probabilistically-shaped symbols sequentially preceding the second portion of the source information sequence.

22 . The wireless communication apparatus of claim 19 , wherein the at least one processor is further configured to cause the wireless communication apparatus to:

generate a second set of non-probabilistically shaped symbols corresponding to at least a portion of the set of systematic bits; and

puncture a subset of symbols of the set of probabilistically-shaped symbols,

wherein to replace the portion of the set of probabilistically-shaped symbols, the at least one processor is further configured to cause the wireless communication apparatus to determine that the puncturing applies to no greater than a number of symbols corresponding to the second set of non-probabilistically shaped symbols.

Assignments (1)

Continuity (1)

References Cited (82)