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Method and apparatus for indicating DC subcarrier, and electronic device

A sub-carrier and sub-carrier spacing technology, applied in electrical components, digital transmission systems, transmission systems, etc., can solve problems such as huge signaling overhead

Active Publication Date: 2018-05-11
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Regardless of how the sender operates on the DC subcarrier, a mechanism is needed so that the receiver can know whether there is a DC subcarrier in the receiving bandwidth, so as to obtain the corresponding data receiving method and ensure the correct reception of data. This is currently to be solved. Problem, a simple method is to directly inform the terminal of the location of the DC subcarrier through signaling, which will cause huge signaling overhead

Method used

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  • Method and apparatus for indicating DC subcarrier, and electronic device
  • Method and apparatus for indicating DC subcarrier, and electronic device
  • Method and apparatus for indicating DC subcarrier, and electronic device

Examples

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Embodiment 1

[0073] Embodiment 1: This embodiment provides a method for indicating a DC subcarrier, such as Figure 9 As shown, the specific process includes the following steps:

[0074] Step 901: the first communication node sends physical carrier indication information, virtual carrier indication information, reception bandwidth indication information, subcarrier spacing indication information and resource allocation indication information to the second communication node.

[0075] In the embodiment of the present invention, the virtual carrier indication information includes at least one of the following: the number of virtual carriers, virtual carrier identification information, virtual carrier bandwidth, subcarrier spacing used by virtual carriers, and fast Fourier transform used by virtual carriers FFT points.

[0076] For example, the virtual carrier indication information includes at least the number of virtual carriers, such as image 3 The number of virtual carriers shown is 1...

Embodiment 2

[0105] Embodiment 2: This embodiment provides a method for indicating a DC subcarrier, such as Figure 12 As shown, the specific process includes the following steps:

[0106] Step 1201: the first communication node sends physical carrier indication information, virtual carrier indication information, reception bandwidth indication information, subcarrier spacing indication information and resource allocation indication information to the second communication node.

[0107] In the embodiment of the present invention, the virtual carrier indication information includes at least one of the following: the number of virtual carriers, virtual carrier identification information, and virtual carrier bandwidth.

[0108] For example, the virtual carrier indication information includes at least the number of virtual carriers, such as image 3 The number of virtual carriers shown is 1, such as Figure 4 The number of virtual carriers shown is 2, such as Figure 5 The number of virtual...

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Abstract

The invention discloses a method and apparatus for indicating a DC subcarrier, and an electronic device. The method comprises the following steps: a first communication node sends one or multiple groups of virtual carrier information to a second communication node, wherein the virtual carrier information at least comprises one of the following: the number of virtual carriers, the bandwidths of thevirtual carriers, virtual carrier index information, a subcarrier spacing used by the virtual carriers, and the number of Fast Fourier Transform FFT points used by the virtual carriers.

Description

technical field [0001] The present invention relates to the field of long-term evolution (LTE, Long Term Evolution) and new air interface (NR, New Radio) mobile communication network, especially relates to a kind of direct current (DC, DirectCurrent) sub-carrier indication under NR or LTE and NR coexistence condition Method and device, electronic device. Background technique [0002] The subcarrier at the center frequency position of the carrier is called the DC subcarrier. Due to the impact of the leakage of the local crystal oscillator, it will cause high interference to multiple adjacent subcarriers. In the LTE system, the DC subcarrier is not suitable for the downlink. For transmission, the uplink adopts the method of shifting 1 / 2 subcarrier due to the continuous allocation of uplink entire system bandwidth. [0003] In the 3rd Generation Partnership Project (3GPP, 3rd Generation Partnership Project) RAN1#86 meeting, it is considered in the next research work of NR that...

Claims

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Application Information

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IPC IPC(8): H04W24/02H04W72/04
CPCH04W24/02H04W72/23H04L5/00H04W72/04
Inventor 李剑郝鹏鲁照华
Owner ZTE CORP
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