×

Timing advance enhancements for cellular communications

  • US 9,332,511 B2
  • Filed: 09/17/2014
  • Issued: 05/03/2016
  • Est. Priority Date: 03/12/2010
  • Status: Active Grant
First Claim
Patent Images

1. A method comprising:

  • when a device is operating in a stationary mode and before a need of the device to communicate data, determining whether a stored timing advance is valid, wherein determining whether the stored timing advance is valid includes determining if a pre-determined time interval has elapsed since a last successful data transfer, whether a pre-determined number of attempts to access a network have failed when the device is in the stationary mode, and whether the device has moved; and

    in response to the stored timing advance being invalid, transmitting an access burst over a random access channel to determine a valid timing advance before the need of the device to communicate the data.

View all claims
  • 12 Assignments
Timeline View
Assignment View
    ×
    ×