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A transmission method of a control channel

A technology of control channel and transmission method, applied in the field of control channel transmission, to achieve the effect of reducing pilot frequency density and improving transmission performance

Active Publication Date: 2020-07-28
西安茂德通讯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can solve the problem that accurate beams cannot be used for reliable data transmission in the state of unknowable channel information

Method used

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  • A transmission method of a control channel
  • A transmission method of a control channel
  • A transmission method of a control channel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Scenario description of this example:

[0033] The initial beam selection is performed after the terminal establishes a connection with the base station, and the moving speed of the terminal is slow, for example, the moving speed is below 30 kmph, and the terminal is not located at the edge of the cell. In this case, the terminal and the beam can use beamforming to transmit data, including service and control data.

[0034] The base station configures the resource of the control channel, including: the time-frequency resource of the control channel, the aggregation level of the control channel, the number of original data bits of the control channel, and the transmission mechanism of the control channel.

[0035] The frequency domain resource of the control channel includes the frequency domain start position and bandwidth, and the time domain resource includes the start OFDM symbol of the control channel and the duration of the control channel. The aggregation level o...

Embodiment 2

[0040] Scenario description of this example:

[0041] The initial beam selection is performed after the terminal establishes a connection with the base station, and the moving speed of the terminal is fast, for example, the moving speed is above 350 kmph. In this case, it is difficult to acquire accurate CSI due to the high moving speed, and an open-loop transmission mechanism is adopted at this time.

[0042] The base station configures the resource of the control channel, including: the time-frequency resource of the control channel, the aggregation level of the control channel, the number of original data bits of the control channel, and the transmission mechanism of the control channel.

[0043] The frequency domain resource of the control channel includes the frequency domain start position and bandwidth, and the time domain resource includes the start OFDM symbol of the control channel and the duration of the control channel. The aggregation level of the control channel...

Embodiment 21

[0048] Scenario description of this example:

[0049] The initial beam selection is performed after the terminal establishes a connection with the base station, and the moving speed of the terminal is fast, for example, the moving speed is above 350 kmph. In this case, it is difficult to acquire accurate CSI due to the high moving speed, and an open-loop transmission mechanism is adopted at this time.

[0050] The base station configures the resource of the control channel, including: the time-frequency resource of the control channel, the aggregation level of the control channel, the number of original data bits of the control channel, and the transmission mechanism of the control channel.

[0051] The frequency domain resource of the control channel includes the frequency domain start position and bandwidth, and the time domain resource includes the start OFDM symbol of the control channel and the duration of the control channel. The aggregation level of the control channel...

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PUM

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Abstract

The present invention discloses a transmission method for a control information channel. The method comprises the following steps: 1) the same precoding is adopted for pilot frequency for demodulating the control information channel and the control information channel; 2) a diversity transmission mode is adopted for the control information channel; 3) the control information channel is broken up on frequency domain resources ; 4) frequency domains are broken up according to a particle size; 5) the break-up particle size changes along with different aggregation degrees; specifically, high aggregation levels correspond to large break-up particle sizes while low aggregation levels correspond to small break-up particle sizes; 6) pilot frequency density changes along with the aggregation degree; specifically, high pilot frequency density corresponds to low aggregation level while low pilot frequency density corresponds to high aggregation levels. The method disclosed in the invention help can solve a problem that reliable data transmission cannot be achieved via use of an accurate wave beam under a condition that information of the information channel is unknown.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a transmission method of a control channel. Background technique [0002] With the advancement of radio technology and the growth of popular data services for various smart terminals, the mobile communication business volume will nearly double every year in the future. METIS (Mobile and wireless communication enablers for the 2020 information society) forecasts 5G traffic: data services will increase by 1,000 times in the next 10 years. [0003] The 4G system has used technologies such as OFDM (orthogonal frequency division multiplexing), MIMO (multiple input multiple output), MU-MIMO (multiple user MIMO), and HARQ (hybrid automatic repeat request) to improve the spectral efficiency of the cell. Through smaller cell technology Increase the system capacity in a certain area. [0004] The above-mentioned technologies are used to improve the rate, flexibility and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/00H04L1/00H04W72/04H04B7/0456H04B7/06H04B7/08
CPCH04B7/0456H04B7/0695H04B7/088H04L1/0061H04L5/0023H04L5/0041H04L5/0048H04W72/046
Inventor 王衍文刘文豪王世芳王渭森
Owner 西安茂德通讯科技有限公司