US Patent No. 9,294,974

MOTION BASED SEARCH AND MEASUREMENT PERIODICITY


Patent No. 9,294,974
Issue Date March 22, 2015
Title Motion Based Search And Measurement Periodicity
Inventorship Sree Ram Kodali, Sunnyvale, CA (US)
Jianxiong Shi, Dublin, CA (US)
Jinghua Ling, Palo Alto, CA (US)
Longda Xing, San Jose, CA (US)
Madhusudan Chaudhary, Campbell, CA (US)
Navid Damji, Cupertino, CA (US)
Sai Sravan Bharadwaj Karri, Santa Clara, CA (US)
Shivesh Makharia, San Jose, CA (US)
Assignee Apple Inc., Cupertino, CA (US)

Claim of US Patent No. 9,294,974

1. A method for a wireless user equipment (UE) device, the method comprising:
camping on a first cell in idle mode;
measuring a signal strength metric, a signal quality metric, and a signal to noise ratio (SNR) of the first cell;
determining that signal strength of the first cell is above a signal strength threshold, signal quality of the first cell
is above a signal quality threshold, and SNR of the first cell is above a SNR threshold;

determining that the UE device has been stationary for at least a first amount of time;
increasing neighbor cell search periodicities in accordance with a first predefined factor based on determining that signal
strength of the first cell is above the signal strength threshold, signal quality of the first cell is above the signal quality
threshold, SNR of the first cell is above the SNR threshold, and the UE device has been stationary for at least the first
amount of time; and

increasing neighbor cell measurement periodicities in accordance with a second predefined factor based on determining that
signal strength of the first cell is above the signal strength threshold, signal quality of the first cell is above the signal
quality threshold, SNR of the first cell is above the SNR threshold, and the UE device has been stationary for at least the
first amount of time.