Radio communications

US11457423B2 · kind B2 · utility

Assignee

• Nordic Semiconductor ASA · NO

Inventors

• Ilari Kukkula · Oulu, FI
• Tapani Jaakola · Trondheim, NO

Key dates

• Filing date: Dec 11, 2018
• Grant date: Sep 27, 2022
• Expiry date: Apr 11, 2039

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04W56/004
• WIPO field: Digital communication
• WIPO sector: Electrical engineering

Abstract

A radio receiver device is arranged to store samples of incoming data symbols in an indexed memory portion having a length of A+B+C. A first data buffer 20-1 has an initial address at index 0 and a final address at index A-1. A timing adjustment buffer 22 has an initial address at index A and a final address at index A+B−1. A second data buffer 20-2 has an initial address at an index A+B and a final address at an index A+B+C−1. A buffer switch pointer 24 has a trigger address between the index 0 and the index A+B−1, at which it triggers a switch 26 from the first to the second buffer. If the current address matches the trigger address, the current address is set to the index A+B. Otherwise, the current address is incremented. If there is a timing offset between local and network clocks, the trigger address is moved to reduce the offset.