Cellular network and internet of things fusion symbiotic system transmission method

A transmission method and technology of cellular network, applied in the field of symbiotic system transmission scheme, can solve the problem of consuming a lot of energy and so on

Active Publication Date: 2019-03-08
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing IoT technologies include Bluetooth, ZigBee, LoRa, SigFox and other technologies, but these existing technologies use active transmission schemes, that is, IoT devices must be equipped with a complete radio frequency chain (amplifier, digital-to-analog converter, etc. ), which means that IoT devices need to consume a lot of energy to support signal transmission, which puts high demands on the battery capacity of IoT devices

Method used

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  • Cellular network and internet of things fusion symbiotic system transmission method
  • Cellular network and internet of things fusion symbiotic system transmission method
  • Cellular network and internet of things fusion symbiotic system transmission method

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Embodiment Construction

[0054] The schemes proposed by the present invention all consider the synchronization between the transmitter and the reflector. In order to illustrate the superiority of the present invention, when there is no synchronization between the two, the performance that the proposed solution 4 of the present invention can achieve is as follows:

[0055] When there is no synchronization between the transmitter and the reflector, the received signal at time t in Scheme 4 can be expressed as

[0056]

[0057] where τ is the time delay of the transmitter and reflector. In this case, if the receiver first detects x l , and then detect the reflective device signal c. in detection of x l , put c(t+τ) and x l (t)c(t+τ) as interference, in this case, x l The maximum rate of

[0058]

[0059] when x l When the detection is successful, its influence can be removed in formula (11), at this time the rate of the reflective device signal c is

[0060]

[0061] The following presen...

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Abstract

The invention belongs to the technical field of wireless communications, and relates to a cellular network and internet of things fusion symbiotic system transmission method. The invention provides two schemes for accessing Internet of things equipment into a network; in the first scheme, reflection equipment (namely, the Internet of things equipment) is accessed into the network by using an uplink signal in the cellular network, and a base station simultaneously demodulates a signal of a user in the cellular network and a signal of the reflection equipment in the Internet of things; and in the second scheme, the reflection equipment is accessed into the network by using a downlink signal in the cellular network, and a user side in the cellular network simultaneously demodulates a signal of the base station in the cellular network and the signal of the reflection equipment in the Internet of things.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and relates to a symbiotic system transmission scheme of a fusion cellular network-Internet of Things. Background technique [0002] The future communication system must support the Internet of Everything. Different types of IoT devices have different performance requirements, and IoT devices have higher requirements for the delay and reliability of the communication system. Therefore, a reasonable and effective The IoT communication model is critical. Existing IoT technologies include Bluetooth, ZigBee, LoRa, SigFox and other technologies, but these existing technologies use active transmission schemes, that is, IoT devices must be equipped with a complete radio frequency chain (amplifier, digital-to-analog converter, etc. ), which means that IoT devices need to consume a lot of energy to support signal transmission, which puts high demands on the battery capacity of IoT devices....

Claims

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Application Information

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IPC IPC(8): H04W72/12H04B7/22
CPCH04B7/22H04W72/1215
Inventor 梁应敞张倩倩郭化盐
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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