Network access of a wireless device to a communications network

US9661663B1 · kind B1 · 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 Grölen · Stockholm, SE
• Hazhir Shokri Razaghi · Sollentuna, SE
• Yutao Sui · Solna, SE
• Yi-Pin Eric Wang · Fremont, US

Key dates

• Filing date: Oct 17, 2016
• Grant date: May 23, 2017
• Expiry date: Oct 17, 2036

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04W74/0858
• WIPO field: Digital communication
• WIPO sector: Electrical engineering

Abstract

A communications network is being accessed by a wireless device associated with a coverage class selected from a set of coverage classes. The wireless device performs a method comprising initiating network access to the communications network by transmitting a preamble sequence for random access on a physical random access channel during a starting opportunity defined by the coverage class of the wireless device. Each coverage class may be associated with a unique number of repetitions of the preamble sequence transmission.