Frequency hopping for random access

US10904923B2 · kind B2 · utility

Assignee

• Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

• Xingqin Lin · Santa Clara, US
• Ansuman Adhikary · Santa Clara, US
• Johan Bergman · Stockholm, SE
• Yufei Blankenship · Kildeer, US
• Asbjörn Grövlen · Stockholm, SE
• Hazhir Shokri Razaghi · Solna, SE
• Yutao Sui · Solna, SE
• Yi-Pin Eric Wang · Fremont, US

Key dates

• Filing date: Jan 27, 2017
• Grant date: Jan 26, 2021
• Expiry date: Feb 16, 2037

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02D30/70
• WIPO field: Digital communication
• WIPO sector: Electrical engineering

Abstract

A wireless communication device (14) (e.g., a user equipment) in a wireless communication system (10) is configured for transmitting a random access preamble signal (16). The wireless communication device (14) in particular is configured to generate a random access preamble signal (16) that comprises multiple symbol groups (18), with each symbol group (18) on a single tone during a different time resource, according to a frequency hopping pattern that hops the random access preamble signal (16) a fixed frequency distance at one or more symbol groups (18) and hops the random access preamble signal (16) a pseudo random frequency distance at one or more other symbol groups (18). Each symbol group (18) comprises one or more symbols. The wireless communication device (14) is also configured to transmit the random access preamble signal (16).