17053278. Sidelink Control Information Processing simplified abstract (Apple Inc.)

Sidelink Control Information Processing

Organization Name

Apple Inc.

Inventor(s)

Chunxuan Ye of San Diego CA (US)

Weidong Yang of San Diego CA (US)

Oghenekome Oteri of San Diego CA (US)

Chunhai Yao of Beijing (CN)

Dawei Zhang of Saratoga CA (US)

Haitong Sun of Irvine CA (US)

Hong He of Cupertino CA (US)

Jie Cui of San Jose CA (US)

Wei Zheng of San Diego CA (US)

Yang Tang of Cupertino CA (US)

Yuchul Kim of Santa Clara CA (US)

Yushu Zhang of Beijing (CN)

Sidelink Control Information Processing - A simplified explanation of the abstract

This abstract first appeared for US patent application 17053278 titled 'Sidelink Control Information Processing

Simplified Explanation

The patent application describes a wireless device that can perform vehicle-to-everything (V2X) communications using a two-stage sidelink control information (SCI) protocol. The device uses a physical sidelink control channel (PSCCH) for Stage 1 SCI messaging and a physical sidelink shared channel (PSSCH) for Stage 2 SCI messaging. The SCI messaging is encoded using polar codes and channel interleaving is used to distribute the SCI across multiple layers of a MIMO transmission system. Scrambling for Stage 2 SCI messaging is based on a cyclic redundancy check (CRC) performed on Stage 1 SCI messaging to avoid collisions with other transmissions. The device also prioritizes sidelink HARQ feedback to prevent collisions with other transmissions.

• The wireless device is capable of performing vehicle-to-everything (V2X) communications.
• It uses a two-stage sidelink control information (SCI) protocol for communication.
• Stage 1 SCI messaging is carried on a physical sidelink control channel (PSCCH).
• Stage 2 SCI messaging is carried on a physical sidelink shared channel (PSSCH).
• The SCI messaging is encoded using polar codes.
• Channel interleaving is used to distribute the SCI across multiple layers of a MIMO transmission system.
• Scrambling for Stage 2 SCI messaging is based on a cyclic redundancy check (CRC) performed on Stage 1 SCI messaging.
• The device prioritizes sidelink HARQ feedback to avoid collisions with other transmissions.

Potential Applications

This technology can be applied in various V2X communication systems, such as:

• Connected vehicles communicating with each other and with infrastructure.
• Autonomous vehicles exchanging information with other vehicles and traffic management systems.
• Emergency vehicles transmitting critical information to nearby vehicles and traffic control centers.

Problems Solved

The technology addresses the following problems in V2X communications:

• Efficient and reliable communication between vehicles and infrastructure.
• Avoiding collisions and interference between different transmissions.
• Ensuring the prioritization of important messages, such as emergency vehicle communications.

Benefits

The use of a two-stage SCI protocol and polar codes in the wireless device offers several benefits:

• Improved reliability and error correction capabilities in V2X communications.
• Efficient utilization of the available wireless channels.
• Prioritization of important messages to ensure timely delivery.
• Reduced collisions and interference with other transmissions.

Original Abstract Submitted

Embodiments are presented herein of apparatuses, systems, and methods for a vehicle-to-everything (V2X) capable wireless device configured to perform sidelink cellular communications. The wireless device performs sidelink communications using a two-stage sidelink control information (SCI) protocol including Stage 1 SCI messaging carried on a physical sidelink control channel (PSCCH), and Stage 2 SCI messaging carried on a physical sidelink shared channel (PSSCH). The SCI messaging may be encoded using polar codes. Channel interleaving is utilized on the SCI to interleave the SCI between two or more layers of a MIMO transmission system. Scrambling for Stage 2 SCI messaging is performed based on the result of a cyclic redundancy check (CRC) performed on Stage 1 SCI messaging. Collisions between sidelink HARQ feedback to be transmitted to a base station and other transmissions are avoided based on a priority analysis of the sidelink HARQ feedback.