US 11,656,317 B2
OTDOA (observed time difference of arrival) positioning enhancement by using heterogeneous reference signals
Seunghee Han, San Jose, CA (US); Alexey Khoryaev, Nizhny Novgorod (RU); Yang Tang, Pleasanton, CA (US); Zhibin Yu, Unterhaching (DE); and Shafi Bashar, Santa Clara, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on May 20, 2022, as Appl. No. 17/749,241.
Application 17/749,241 is a continuation of application No. 16/852,914, filed on Apr. 20, 2020, granted, now 11,391,811.
Application 16/852,914 is a continuation of application No. 15/539,896, granted, now 10,627,478, previously published as PCT/US2015/067400, filed on Dec. 22, 2015.
Claims priority of provisional application 62/107,627, filed on Jan. 26, 2015.
Prior Publication US 2022/0276335 A1, Sep. 1, 2022
Int. Cl. H04B 17/00 (2015.01); G01S 5/10 (2006.01); G01S 1/20 (2006.01); G01S 5/02 (2010.01)
CPC G01S 5/10 (2013.01) [G01S 1/20 (2013.01); G01S 5/0236 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus configured to be employed within a network device, the apparatus comprising:
a memory;
a processor coupled to the memory and configured to generate a plurality of reference signals (RSs) comprising a set of one or more RSs of each of at least two distinct types of RSs;
transmitter circuitry configured to:
transmit, to a user equipment (UE), a configuration message that facilitates computation of a reference signal time difference (RSTD) based on the at least two distinct types of RSs; and
transmit the plurality of RSs to the UE; and
receiver circuitry configured to receive, from the UE, a set of RSTD measurements for estimating a position of the UE.