A wireless data transmission method and system

A wireless data transmission and data technology, applied in the field of wireless data transmission methods and systems, can solve the problems of low latency, high reliability, complexity and cost increase, and achieve the effect of improving reliability indicators

Inactive Publication Date: 2019-06-07
NUFRONT MOBILE COMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under the HARQ mechanism, the receiver improves reliability by combining multiple retransmission information, but the transmission delay will inevitably increase, and saving multiple retransmission information will also bring a significant increase in complexity and cost
[0005] Therefore, existing commercial wireless communication systems such as LTE / LTE-A / 3GPP 5G and WLAN cannot provide both ultra-high reliability and ultra-low delay characteristics

Method used

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  • A wireless data transmission method and system
  • A wireless data transmission method and system
  • A wireless data transmission method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] In the broadband mobile communication system, the frequency domain dimension—multiple sub-channels can be used for multi-channel transmission. Multiple sub-channels replicate and send the same data to improve the reliability of the system.

[0062] According to the EUHT system's support for sub-channels, 5 / 10 / 20MHz can be configured as sub-channels according to scenarios. The sub-channel duplication method can be used to improve the reliability requirements of the control signaling of the overall system.

[0063] The CAP occupies M basic sub-channels, modulates, codes and copies the data to the M basic sub-channels for transmission, and the SAT combines and receives the data sent from the CAP within the scope of the N basic sub-channels.

[0064] Specifically, the channel is a sub-channel that divides the working bandwidth according to a predetermined specification.

[0065] Divide the 80MHz available bandwidth into four 20MHz sub-channels, such as Figure 4 shown.

...

Embodiment 2

[0070] Specifically, multiple channels are located in different subframes in the same physical frame.

[0071] The length of the subframe can be set to different duration periods, and different attribution services are respectively configured in subframes with different durations according to service characteristics.

[0072] Flexible configuration of subframes of different lengths, for example, the subframe length is 2 milliseconds, 1 millisecond or 0.5 milliseconds, etc. These subframes of different lengths can be mixed and matched, and different belonging services enter different subframe length configuration periods, taking into account real-time and throughput.

[0073] Can support fixed-length 2ms, 1ms, 0.5ms frames;

[0074] For example, or distribute 10ms by 2ms and two 1ms intervals;

[0075] Or, 10ms is distributed according to 2ms, 1 1ms, 2 0.5ms intervals.

Embodiment 3

[0077] The channel is a radio frequency channel constructed by using N different antennas, and the N antennas cooperate to send the M shares of the same service data.

[0078] refer to Figure 5 After the data stream of the CAP is coded and modulated, multiple copies of the data stream are copied and sent out on different antennas. The STA end separates the received signals through a spatial equalizer, and then demodulates and decodes them to combine the different received signals of the data stream. The original data flow is restored, thereby improving the reliability of the transmitted data.

[0079] In the new-generation 5G communication system, a transmission point (Transmit Receiving Point, TRP for short) will be configured with multiple large-scale antenna array structures, resulting in different characteristics of beams formed by different antennas. Therefore, more flexible and efficient cooperation between antennas is required to meet the requirements of 5G New Radio ...

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Abstract

The invention provides a wireless data transmission method, which comprises the following steps of: copying service data to be sent to obtain at least two pieces of service data; Respectively sendingthe at least two pieces of service data through M transmission channels; And enabling the receiving end to receive the sent data in the N channels and recover the original service data, wherein N is an integer greater than 2. The invention also provides a corresponding wireless data transmission system. According to the method, the system design difficulty supporting high reliability and low timedelay is solved, the reliability index of the service is improved through flexible system frame structure design, flexible frame configuration and multi-channel transmission strategy combination.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a wireless data transmission method and system. Background technique [0002] In recent years, the demand for wireless communication in human society is growing rapidly, from providing interconnection between people to providing interconnection of everything, such as Internet of Things, Internet of Vehicles, Industrial Internet and so on. An important prerequisite for the Internet of Everything is that the wireless communication system should be highly reliable and low-latency at the same time. The existing wireless communication technologies include the wireless LAN WiFi technology based on the 802.11 standard, the Bluetooth system based on the 802.15, and the mobile communication system. LTE / LTE-A / 3GPP 5G, etc., cannot meet such demands. Wi-Fi technology is available. [0003] The WiFi technology based on IEEE 802.11 is the most widely used wireless...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00H04L1/00
Inventor 雷俊刘慎发于晓燕鲍东山
Owner NUFRONT MOBILE COMM TECH
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