Title:
SIGNAL SYNCHRONIZATION METHOD APPLIED TO ULTRA WIDEBAND SYSTEM, AND COMMUNICATION APPARATUS
Document Type and Number:
WIPO Patent Application WO/2023/246579
Kind Code:
A1
Abstract:
The present application is applied to an ultra-wideband-based wireless personal area network system, which comprises 802.15 series protocols, such as 802.15.4a, 802.15.4z or 802.15.4ab, and can also support a next-generation Wi-Fi protocol of IEEE 802.11ax, such as 802.11be, Wi-Fi 7 or extremely high throughput, as well as 802.11b. Provided in the present application are a signal synchronization method applied to an ultra-wideband system, and a communication apparatus. The method comprises: sending a narrow-band signal, wherein a PPDU of the narrow-band signal comprises at least one pilot symbol, and the pilot symbol and the PPDU are used for a receiving device to acquire time-frequency synchronization information of an ultra-wideband signal; and sending the ultra-wideband signal. By means of estimating a carrier frequency offset on the basis of inserted pilot symbols and a preamble in a PPDU, high-precision time-frequency synchronization of an ultra-wideband signal between a sending device and a receiving device can be realized.
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Inventors:
QIAN BIN (CN)
LIU CHENCHEN (CN)
YANG XUN (CN)
LIU CHENCHEN (CN)
YANG XUN (CN)
Application Number:
PCT/CN2023/100151
Publication Date:
December 28, 2023
Filing Date:
June 14, 2023
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04L5/00; H04B1/69
Foreign References:
| US20220141657A1 | 2022-05-05 | |||
| CN102255631A | 2011-11-23 | |||
| CN110086584A | 2019-08-02 | |||
| CN113206723A | 2021-08-03 |
Other References:
ANONYMOUS: "Channel Access using Clear Channel Assessment (CCA), useful tool for efficient UWB communication", PROJECT: IEEE P802.15 WORKING GROUP FOR WIRELESS PERSONAL AREA NETWORKS (WPANS), DOC.: 15-21-0412-00-04AB, 20 July 2021 (2021-07-20), pages 1 - 12, XP093121322
Attorney, Agent or Firm:
LONGSUN LEAD IP LTD. (CN)
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