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Handling of radio frequency front-end group delays for round trip time estimation

專利號(hào)
US11159972B2
公開日期
2021-10-26
申請(qǐng)人
QUALCOMM Incorporated（US CA San Diego）
發(fā)明人
Sony Akkarakaran; Tao Luo; Joseph Binamira Soriaga; Alexandras Manolakos; Naga Bhushan; Guttorm Ringstad Opshaug; Sven Fischer
IPC分類
H04W24/10; H04W64/00; H04W72/04
技術(shù)領(lǐng)域
rttr,ue,rttm,gd,rtt,network,may,gnodebs,signal,gnodeb
地域： CA CA San Diego

摘要

Disclosed are techniques for handling of radio frequency (RF) front-end group delays for round trip time (RTT) estimation. In an aspect, a network entity determines a network total group delay (GD) and a user equipment (UE) determines a UE total GD. The network entity transmits one or more RTT measurement (RTTM) signals to the UE. Each RTTM signal includes a RTTM waveform. The UE determines one or more one or more RTT response (RTTR) payloads for one or more RTTR signals. Each RTTR signal also includes a RTTR waveform. The UE transmits the RTTR signal(s) to the network entity. For each RTTR signal, a transmission time of the RTTR waveform and/or the RTTR payload is/are determined based on the UE total GD. The network entity determines a RTT between the UE and the network entity based on the RTTM signal(s), the RTTR signal(s), and the network total GD.

說明書

Both RANs 120A and 120B are configured to connect to a core network 140 that can perform a variety of functions, including routing and connecting circuit switched (CS) calls between UEs 102 served by the RAN 120A/120B and other UEs 102 served by the RAN 120A/120B or UEs served by a different RAN altogether, and can also mediate an exchange of packet-switched (PS) data with external networks such as Internet 175 and external clients and servers.

The Internet 175 includes a number of routing agents and processing agents (not shown in FIG. 1A for the sake of convenience). In FIG. 1A, UE 102-N is shown as connecting to the Internet 175 directly (i.e., separate from the core network 140, such as over an Ethernet connection of WiFi or 802.11-based network). The Internet 175 can thereby function to route and connect packet-switched data communications between UE 102-N and UEs 102-1 to 102-5 via the core network 140.

權(quán)利要求

1
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