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Signal sending and processing method and device

A technology of signal transmission and reference signal, which is applied in the direction of synchronization device, pilot signal distribution, wireless communication, etc.

Active Publication Date: 2021-03-30
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For the change rate of the timing point, imagine a low-orbit satellite system with a satellite orbit height of 600km as mentioned above, the terminal located at the minimum elevation angle has a round-trip transmission delay change rate of about ±45us / s, and is located under a satellite with a radius of 100km The difference in the round-trip transmission delay change rate between terminals at both ends of the coverage area is 10us / s, and the SRS structure stipulated in the existing protocol may not be able to realize the uplink timing tracking function under all conditions

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  • Signal sending and processing method and device
  • Signal sending and processing method and device
  • Signal sending and processing method and device

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Embodiment Construction

[0112] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention.

[0113] Firstly, the adaptation scenarios of the embodiments of the present invention will be described.

[0114] see figure 1 , figure 1 A schematic diagram of a satellite communication scenario and architecture provided for the embodiment of this application, such as figure 1The satellites shown have signal processing capabilities, or the satellites transparently forward terminal equipment signals to ground stations for wide-area coverage. In this process, a protocol stack compatible with the existing 3GPP LTE / NR is adopted. The terminal equipment is an ordinary mobile terminal or a dedicated terminal, and the transmission process also follows the LTE / NR protocol. The terminal device can send ...

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Abstract

The invention discloses a signal sending and processing method and device, and the method comprises the steps that terminal equipment generates a channel sounding reference signal SRS, and sends the SRS to a target base station; and the target base station tracks the uplink timing position of the terminal equipment according to the received SRS, wherein the change range of the uplink timing position is not less than the length of one SRS symbol. By adopting the scheme of the embodiment of the invention, the SRS symbol length and the detectable uplink timing position change range can be effectively increased, and the tracking effect on the uplink timing position and the frequency offset of the terminal equipment is improved.

Description

technical field [0001] The present invention relates to the field of terminals, in particular to a signal sending and processing method and device. Background technique [0002] The future 5G and its evolved networks not only need to meet the business needs of various industries, but also need to provide wider service coverage. Compared with terrestrial cellular mobile communication, satellite mobile communication has great advantages. It has long communication distance, large coverage area and wide communication frequency band, which can provide users with communication services at any time and any place. Therefore, the application prospect of satellite mobile communication is very broad, especially in international and domestic communication, emergency relief and other aspects have unique advantages. [0003] According to the orbit height of the satellite, the satellite mobile communication system can be divided into a geostationary earth orbit (Geostationary Earth Orbit,...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W56/00H04L27/00
CPCH04W56/0045H04L27/0014H04L2027/0026H04B7/18513H04L5/0051H04L27/2613H04J11/003H04L25/0224H04L27/2657H04W56/0075
Inventor 徐晨蕾周建伟罗禾佳王晓鲁
Owner HUAWEI TECH CO LTD