CN-122029765-A - Longer Low Density Parity Check (LDPC) code signaling in Ultra High Reliability (UHR) systems

Abstract

The present disclosure provides methods, components, devices and systems for managing long Low Density Parity Check (LDPC) codewords in Ultra High Reliability (UHR) systems. A method for wireless communication may be performed at a sender device or node. The method may include transmitting signaling to a receiver device or node indicating that the transmitter device supports the use of a first LDPC codeword length greater than or equal to a threshold LDPC codeword length. The method may further include transmitting an LDPC codeword (e.g., a long LDPC codeword) of the first LDPC codeword length to the receiver device when one or more conditions are met.

Inventors

• LI JIALING
• WU KANKE
• S. Weimani
• B.TIAN
• Y.Jin
• CHEN QIFAN

Assignees

• 高通股份有限公司

Dates

Publication Date

20260512

Application Date

20240912

Priority Date

20240117

Claims (20)

1. 1. An apparatus for wireless communication, the apparatus comprising: At least one memory including instructions, and One or more processors configured, individually or collectively, to execute the instructions and cause the apparatus to: Outputting first signaling indicating that the apparatus supports a first Low Density Parity Check (LDPC) codeword length using a first LDPC codeword length greater than or equal to a threshold LDPC codeword length, and One or more LDPC codewords of the first LDPC codeword length are output when one or more conditions are satisfied.
2. 2. The apparatus of claim 1, wherein: The one or more processors, individually or collectively, are further configured to execute the instructions and cause the apparatus to generate the one or more LDPC codewords by Encoding data bits to obtain decoded bits comprising a number of parity bits, an Puncturing a number of said parity bits, and The one or more conditions include a first condition designed to limit a ratio of the number of punctured parity bits to the number of parity bits.
3. 3. The apparatus of claim 2, wherein the first condition is deemed satisfied based on a number of bits available for communication of the one or more codewords being greater than a threshold.
4. 4. The apparatus of claim 3, wherein the one or more conditions comprise a second condition that is deemed satisfied based on the first LDPC codeword length being enabled for use.
5. 5. The apparatus of claim 3, wherein a number of the one or more codewords is based on the number of bits available for communication and the first LDPC codeword length when the one or more conditions are met.
6. 6. A device according to claim 3, wherein: The one or more processors, individually or collectively, are further configured to execute the instructions and cause the apparatus to generate a value as a modulo function of the number of bits available for communication and the first LDPC codeword length, and The first condition is deemed to be satisfied based on (1) the value being greater than a product of the first LDPC codeword length and a first scaling factor and (2) the number of available bits being greater than a first threshold.
7. 7. A device according to claim 3, wherein: The one or more processors, individually or collectively, are further configured to execute the instructions and cause the apparatus to generate a value as a modulo function of the number of bits available for communication and the first LDPC codeword length, and The first condition is considered to be satisfied based on: The value is greater than a product of the first LDPC codeword length and a first scaling factor, and the number of bits available for communication is greater than a first threshold but less than a second threshold, or The value is greater than a product of the first LDPC codeword length and a second scaling factor, and the number of bits available for communication is greater than the second threshold.
8. 8. The apparatus of claim 1, wherein the one or more processors are configured, individually or collectively, to execute the instructions and cause the apparatus to output an indication of the first LDPC codeword length.
9. 9. The apparatus of claim 8, wherein the indication of the first LDPC codeword length is output via a physical layer (PHY) header.
10. 10. The apparatus of claim 9, wherein the PHY header comprises a PHY header of: Physical Protocol Data Unit (PDU), or Triggering a frame.
11. 11. The apparatus of claim 9, wherein the indication is output via a common field in the PHY header or via a user-specific field in the PHY header.
12. 12. The apparatus of claim 9, wherein the indication is output via a field in the PHY header, wherein: a first value of the field indicating use of a first parameter table including the first LDPC codeword length, and The second value of the field indicates the use of a second parameter table that does not include the first LDPC codeword length.
13. 13. The apparatus of claim 9, wherein the indication of the first LDPC codeword length is output via a Signal (SIG) field in the PHY header.
14. 14. The apparatus of claim 1, further comprising at least one transceiver configured to transmit the one or more codewords, wherein the apparatus is configured as a wireless station.
15. 15. An apparatus for wireless communication, the apparatus comprising: At least one memory including instructions, and One or more processors configured, individually or collectively, to execute the instructions and cause the apparatus to: when one or more conditions are met, obtaining first signaling indicating that the wireless node supports use of a first Low Density Parity Check (LDPC) codeword length greater than or equal to a threshold LDPC codeword length, and One or more LDPC codewords of the first LDPC codeword length are obtained from the wireless node when one or more conditions are satisfied.
16. 16. The apparatus of claim 15, wherein the one or more LDPC codewords comprise coding bits comprising a number of parity bits.
17. 17. The apparatus of claim 15, wherein the one or more conditions comprise a first condition deemed satisfied based on a number of bits available for communication of the one or more codewords being greater than a threshold.
18. 18. The apparatus of claim 17, wherein the one or more conditions further comprise a second condition that is deemed satisfied based on the first LDPC codeword length being enabled for use.
19. 19. The apparatus of claim 17, wherein a number of the one or more codewords is based on the number of bits available for communication and the first LDPC codeword length when the one or more conditions are met.
20. 20. The apparatus of claim 17, wherein: The one or more processors, individually or collectively, are further configured to execute the instructions and cause the apparatus to generate a value as a modulo function of the number of available bits and the first LDPC codeword length, and The first condition is deemed to be satisfied based on (1) the value being greater than a product of the first LDPC codeword length and a first scaling factor and (2) the number of bits available for communication being greater than a first threshold.

Description

Longer Low Density Parity Check (LDPC) code signaling in Ultra High Reliability (UHR) systems Cross Reference to Related Applications The present application claims priority from U.S. patent application Ser. No. 18/658,764, filed 5/8 at 2024, which is a continuation-in-part of U.S. patent application Ser. No. 18/415,437, filed 1/17 at 2024, which claims the benefit and priority from U.S. provisional patent application Ser. No. 63/583,235, filed 9/15 at 2023, all of which are incorporated herein by reference in their entirety. Technical Field The present disclosure relates generally to wireless communications, and more particularly to managing long Low Density Parity Check (LDPC) codewords in ultra-high reliability (UHR) systems. Description of related Art A Wireless Local Area Network (WLAN) may be formed of one or more wireless Access Points (APs) that provide a shared wireless communication medium for use by a plurality of client devices, also referred to as wireless Stations (STAs). The basic building block of WLANs conforming to the Institute of Electrical and Electronics Engineers (IEEE) 802.11 family of standards is the Basic Service Set (BSS) managed by an AP. Each BSS is identified by a Basic Service Set Identifier (BSSID) advertised by the AP. The AP periodically broadcasts beacon frames to enable any STA within wireless range of the AP to establish or maintain a communication link with the WLAN. Disclosure of Invention The systems, methods, and devices of the present disclosure each have several innovative aspects, no single one of which is solely responsible for the desirable attributes disclosed herein. One innovative aspect of the subject matter described in this disclosure can be implemented at a first wireless node for wireless communication. The first wireless device includes at least one memory including instructions and one or more processors configured to execute the instructions, alone or in any combination, and cause the first wireless node to output first signaling indicating that the first wireless node supports using a first Low Density Parity Check (LDPC) codeword length that is greater than or equal to a threshold LDPC codeword length, and output an LDPC codeword of the first LDPC codeword length when one or more conditions are met. Another innovative aspect of the subject matter described in this disclosure can be implemented as a method for wireless communication that can be performed at a first wireless node. The method may include outputting first signaling indicating that the first wireless node supports use of a first LDPC codeword length greater than or equal to a threshold LDPC codeword length, and outputting an LDPC codeword of the first LDPC codeword length when one or more conditions are met. Another innovative aspect of the subject matter described in this disclosure can be implemented at a first wireless node for wireless communication. The first wireless device includes at least one memory including instructions and one or more processors configured to execute the instructions, alone or in any combination, and cause the first wireless node to obtain first signaling indicating that a second wireless node supports using a first LDPC codeword length that is greater than or equal to a threshold LDPC codeword length, and obtain an LDPC codeword of the first LDPC codeword length when one or more conditions are met. Another innovative aspect of the subject matter described in this disclosure can be implemented as a method for wireless communication that can be performed at a first wireless node. The method may include obtaining first signaling indicating that the second wireless node supports use of a first LDPC codeword length greater than or equal to a threshold LDPC codeword length, and obtaining an LDPC codeword of the first LDPC codeword length when one or more conditions are satisfied. The details of one or more implementations of the subject matter described in this disclosure are set forth in the accompanying drawings and the description below. Other features, aspects, and advantages will become apparent from the description, the drawings, and the claims. It is noted that the relative dimensions of the following drawings may not be to scale. Drawings Fig. 1 shows a schematic diagram of an example wireless communication network. Fig. 2 illustrates an example Protocol Data Unit (PDU) that can be used for communication between a wireless Access Point (AP) and one or more wireless Stations (STAs). Fig. 3 illustrates a layered format of an example physical layer PDU (PPDU) that can be used for communication between a wireless AP and one or more wireless STAs. Fig. 4 shows a schematic diagram of another example wireless communication network. Fig. 5 illustrates an example PPDU that can be used for communication between a wireless AP and one or more STAs. Fig. 6 shows a graphical representation of an example Low Density Parity Check (LDPC) code or codeword. Fig. 7 shows a m