UHR Signaling User Info Fields for Flexible Coding and Low Overhead
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Solution Overview
Problem
Existing wireless communication technologies face challenges in efficiently supporting ultra-high reliability (UHR) signaling due to limitations in coding scheme flexibility and signaling overhead, particularly in scenarios requiring high reliability and flexibility.
Innovation Solution
Implementing a user info field with a two-bit subfield to support multiple coding scheme options, such as BCC and LDPC schemes, and leveraging implicit relationships between UHR parameters like UEQM and transmit beamforming to reduce signaling overhead by implicitly indicating global cyclic shift delays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional signaling methods are used, then signaling overhead is reduced, but coding flexibility and reliability are insufficient
Solution Approach 1:
The user info field is segmented into multiple subfields, including a dedicated coding scheme subfield with 2 bits that can independently indicate different coding schemes (BCC, LDPC, or other schemes). This segmentation allows the coding scheme to be selected and indicated separately from other parameters, enhancing both reliability through appropriate coding selection and flexibility through independent configuration.
2Adaptability or versatility
If multiple coding schemes are supported explicitly, then coding flexibility is improved, but signaling overhead increases
Solution Approach 1:
A dedicated 2-bit coding scheme subfield is introduced within the user info field structure, providing localized and efficient coding scheme indication. This subfield is specifically designed to support at least three different coding schemes with minimal overhead, rather than embedding coding scheme information throughout the entire signaling structure.
Solution Approach 2:
The coding scheme subfield uses 2 bits to encode multiple coding scheme options, changing the parameter representation from potentially longer explicit descriptions to a compact 2-bit field. This parameter change reduces signaling overhead while maintaining the ability to indicate multiple coding schemes including BCC, LDPC, and other schemes.
3Reliability
If UHR parameters are explicitly signaled, then communication reliability is improved, but signaling overhead increases
Solution Approach 1:
The patent establishes preliminary relationships between UHR parameters, such as the implicit relationship between UEQM and transmit beamforming. By pre-defining these relationships, the system can indicate one parameter and have the other derived implicitly, reducing the need for explicit signaling of all UHR parameters while maintaining communication reliability.
Data Source
AI summary
This disclosure provides methods, components, devices, and systems for ultra-high reliability (UHR) signaling design. Some aspects more specifically relate to an access point (AP) transmitting a frame including a user info field to a wireless station (STA), where the user info field supports UHR parameters. The user info field may include a subfield indicating a coding scheme for communications, where the subfield includes at least two bits to support at least three coding scheme options. Additionally, or alternatively, the AP may transmit a trigger frame indicating for one or more STAs to communicate via distributed resource units (RUs). The AP may arrange the user info fields in the trigger frame to implicitly indicate respective global cyclic shift delay (CSD) indexes to the STAs. A STA receiving the trigger frame may determine a global CSD index corresponding to the STA according to the order of the user info fields.