Carrier frequency tracking method, signal transmission method and related device

A technology for tracking information and carrier frequency, which is applied in the field of wireless networks and can solve problems such as poor data transmission performance of UE

Pending Publication Date: 2021-08-17
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in the SFN scenario, sometimes the data transmission performance of the UE is not good

Method used

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  • Carrier frequency tracking method, signal transmission method and related device
  • Carrier frequency tracking method, signal transmission method and related device
  • Carrier frequency tracking method, signal transmission method and related device

Examples

Experimental program
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Embodiment Construction

[0105] The technical solution in this application will be described below with reference to the accompanying drawings.

[0106] see Figure 1A , Figure 1A It is a network architecture diagram of the communication system involved in this application. The communication system includes a SFN cell 100 and a terminal device 200 accessing the SFN cell 100 . The SFN cell 100 includes a baseband unit (Baseband Unit, BBU) 10 and a plurality of transmitting and receiving devices 20 connected to the BBU 10 . It can be understood that the number of sending and receiving devices in the SFN cell may also be two.

[0107] The sending and receiving device in the SFN cell is one or more of a remote radio unit (Remote Radio Unit, RRU), a remote radio head (Remote Radio Head, RRH) or a TRP.

[0108] The BBU and multiple sending and receiving devices in one SFN cell can be deployed on the same network device. The BBU and multiple sending and receiving devices in one SFN cell can be deployed o...

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Abstract

The invention provides a carrier frequency tracking method, a signal transmission method and a related device. The carrier frequency tracking method comprises the following steps: the terminal equipment receives a first tracking reference signal from a first sending and receiving device of a single-frequency network cell; the terminal equipment receives a second tracking reference signal from a second sending and receiving device of the single frequency network cell; time-frequency resources occupied by the first tracking reference signal and the second tracking reference signal are different; and the terminal equipment performs carrier frequency tracking according to at least one of the first tracking reference signal and the second tracking reference signal. In this way, the terminal equipment can obtain a suitable carrier frequency for carrier frequency tracking according to the plurality of received TRSs, and performs data transmission on the tracked carrier frequency, so that the data transmission performance of the terminal equipment is better. The technical scheme of the invention can be applied to a single-frequency network scene, such as a high-speed rail scene.

Description

technical field [0001] The present application relates to the technical field of wireless networks, and in particular to a carrier frequency tracking method, a signal transmission method and related devices. Background technique [0002] The physical cell is also called the L1 physical cell, and it is a uniquely identified cell that processes baseband resource identification inside the baseband board. Each physical cell needs to consume a demodulation resource of the baseband board, that is, corresponds to a carrier resource (Carrier Resource, CR). A cell (Cell) refers to a basic logical unit that provides a complete communication service for a user equipment (User Equipment) in a wireless network, and is a logical division of carrier resources, so it is also called a logical cell. At the air interface layer, the UE distinguishes different logical cells through a physical cell identifier (Physical Cell Identifier, PCI). A logical cell may consist of one or more physical ce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/10H04L27/00
CPCH04W16/10H04L27/0014H04L2027/0026H04L5/0048H04L2027/0065H04L2027/0093H04L5/0035
Inventor 许子杰高瑜周国华彭金磷窦圣跃杨育波
Owner HUAWEI TECH CO LTD
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