Title:
RADIO LINK MONITORING USING A LOW-POWER WAKE-UP RADIO IN A WIRELESS DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/031222
Kind Code:
A1
Abstract:
This application relates to wireless communications, including methods and apparatus to monitor radio link conditions of a cellular wireless network adaptively using a low-power wake-up signal (LP-WUS) burst received by a low-power wake-up radio (LP-WUR) of a wireless device when possible and switching to using legacy reference signals received by a main radio only when required. The LP-WUS burst is processed by the LP-WUR to determine a block error rate (BLER) value and/or a signal-to-noise-plus-interference ratio (SINR) value to determine whether the wireless device is in an out-of-sync (OOS) condition. The main radio can be awakened, including when directed to sleep by the cellular wireless network, to perform radio link monitoring when the OOS condition is determined.
Inventors:
CUI JIE (US)
ZHANG DAWEI (US)
HE HONG (US)
RAGHAVAN MANASA (US)
LI QIMING (US)
BETTANCOURT ORTEGA ROLANDO E (US)
CHEN XIANG (US)
TANG YANG (US)
CHEN YUQIN (US)
ZHANG DAWEI (US)
HE HONG (US)
RAGHAVAN MANASA (US)
LI QIMING (US)
BETTANCOURT ORTEGA ROLANDO E (US)
CHEN XIANG (US)
TANG YANG (US)
CHEN YUQIN (US)
Application Number:
PCT/CN2022/110801
Publication Date:
February 15, 2024
Filing Date:
August 08, 2022
Export Citation:
Assignee:
APPLE INC (US)
CUI JIE (US)
CUI JIE (US)
International Classes:
H04W52/02
Domestic Patent References:
| WO2020168330A1 | 2020-08-20 | |||
| WO2021020952A1 | 2021-02-04 |
Foreign References:
| US20200120604A1 | 2020-04-16 | |||
| US20220078879A1 | 2022-03-10 | |||
| US20220046582A1 | 2022-02-10 | |||
| US20220078710A1 | 2022-03-10 |
Other References:
QUALCOMM INC: "3GPP TSG-RAN WG2 Meeting #106 R2-1906703", FURTHER DISCUSSION ON UE BEHAVIOR UPON RECEPTION OF WUS, 3 May 2019 (2019-05-03), XP051711010
Attorney, Agent or Firm:
CCPIT PATENT AND TRADEMARK LAW OFFICE (CN)
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