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Method for determining CP (Cyclic Prefix) type, terminal device and base station

A technology for terminal equipment and determination methods, which is applied in the field of base stations and terminal equipment, and can solve problems such as large interference between signals and inaccurate CP types

Active Publication Date: 2019-01-04
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] This application provides a method for determining a CP type, terminal equipment, and a base station to solve the problem of large interference between signals caused by inaccurate determination of the CP type

Method used

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  • Method for determining CP (Cyclic Prefix) type, terminal device and base station
  • Method for determining CP (Cyclic Prefix) type, terminal device and base station
  • Method for determining CP (Cyclic Prefix) type, terminal device and base station

Examples

Experimental program
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Embodiment 1

[0106] see Figure 4 As shown, it is a method for determining the CP type provided by the embodiment of the present application. Each terminal device reports its corresponding configuration information for determining the CP type to the base station, so that the base station according to the configuration information sent by each terminal device is Each terminal device is configured with a CP type.

[0107] S401. The terminal device sends configuration information to the base station.

[0108] Wherein, the configuration information includes correspondences between different parameter value ranges and different CP types. The parameter value can be any one of CQI value, MCS value, and signal-to-noise ratio value.

[0109] Optionally, the terminal device can compare the correspondence between different CQI value ranges and different CP types, the correspondence between different MCS value ranges and different CP types, and the different signal-to-noise ratio value ranges One o...

Embodiment 2

[0160] see Figure 6 As shown, it is a method for determining the CP type provided by the embodiment of the present application. The base station is configured with configuration information for configuring the CP type for the terminal device, so that the base station configures the CP type for the terminal device according to the configuration information, and different terminal devices share the CP type. a configuration message.

[0161] S601. The terminal device acquires any of the following parameter values: a CQI value, an MCS value, and a signal-to-noise ratio value.

[0162] Optionally, when the terminal device obtains the parameter value, it can be realized in the following ways:

[0163] When the parameter value is a CQI value, the terminal device determines the average value of the CQI reported within the first preset time length, or the maximum value of the CQI reported by the terminal device within the first preset time length, Or the root mean square value of th...

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Abstract

The present invention discloses a method for determining a CP (Cyclic Prefix) type, a terminal device and a base station. The invention aims to solve the problem of large inter-signal interference caused by inaccuracy in determining a CP type. The method includes the following steps that: a terminal device sends configuration information to a base station; after receiving the configuration information sent by the terminal device, the base station determines the CP type of the terminal device based on the configuration information; and after configuring the CP type for the terminal device, thebase station sends the configured CP type to the terminal device, after the terminal device receives the CP type configured by the base station, the terminal device determines a CP type used for transmitting data according to the CP type configured by the base station.

Description

technical field [0001] The present application relates to the field of communication technologies, and in particular to a method for determining a CP type, a terminal device, and a base station. Background technique [0002] In an orthogonal frequency division multiplexing (English: Orthogonal Frequency Division Multiplexing, OFDM for short) system, in order to eliminate inter-symbol interference to the greatest extent, it is necessary to insert a guard interval between each OFDM symbol. The maximum delay spread of the channel such that the multipath components of one symbol do not interfere with the next symbol. The signal within the guard interval is called a cyclic prefix (English: Cyclic Prefix, CP for short). CP types can be divided into normal CP (English: Normal CP, abbreviated: NCP) and extended CP (English: Extended CP, abbreviated: ECP). The application scenario of ECP is usually in the environment where there is a large delay expansion channel. [0003] In the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/02H04L27/26
CPCH04L27/2607H04W24/02
Inventor 李新县唐浩唐臻飞张鹏
Owner HUAWEI TECH CO LTD