Methods and apparatus for timing synchronization during a wireless uplink random access procedure

US9572121B2 · kind B2 · utility

Assignee

• QUALCOMM Incorporated · US

Inventors

• Bao Vinh Nguyen · Corona, US
• Dominique Francois Bressanelli · Hessen, DE
• Shailesh Maheshwari · San Diego, US
• Deepak Krishnamoorthi · San Diego, US
• Prasanna Venkata Santosh Kumar Tallapragada · San Diego, US

Key dates

• Filing date: Aug 14, 2013
• Grant date: Feb 14, 2017
• Expiry date: Apr 4, 2034

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04W74/002
• WIPO field: Digital communication
• WIPO sector: Electrical engineering

Abstract

Aspects generally relate to wireless communications and, more particularly, to methods, systems and apparatus for timing synchronization during a wireless uplink random access procedure. For example, certain aspects relate to a technique for receiving first timing advance information associated with uplink wireless communications with a base station (BS), transmitting a random access connection request message to the BS, receiving a random access response from the BS while the first timing advance information is within a valid time period, the random access response comprising second timing advance information associated with uplink wireless communications with the base station, determining, after receiving the random access response, that the valid time period for the first timing advance information has expired, and utilizing the second timing advance information for uplink communications with the BS after determining that the valid time period for the first timing advance information has expired. Numerous other aspects are provided.