Self-adaptive monitor matching anti-interference method of wireless sensor network

Abstract

The invention discloses a self-adaptive monitor matching anti-interference method of a wireless sensor network. The self-adaptive monitor matching anti-interference method adopts a 'self-adaptive monitor matching window' flexibly adjustable in receiving window size to receive data information transmitted from a source node. A receiving monitor window is maximum in size in an initial state, and a received signal strength indicator measures the strength of wireless signals. When the signal strength is lower than a set threshold value, a cycle rate counter adds 1. When the signal strength is higher than the set threshold value, signal receiving starts. When signal receiving succeeds, a communication window is adjusted to be maximum in size and returns to the initial state. If the receiving fails, the window size is decreased. In the monitoring process, if no interference signal or normal signal is found in M cycles, the size of the receiving monitor window is minimum. When the monitor window is in a minimum state, interference signals always exist in the M cycles, and the window is adjusted to be in an intermediate state. By the adoption of the self-adaptive monitor matching anti-interference method, monitor errors between a transmitting node and a receiving node in a wireless interference environment is effectively decreased, and unnecessary energy consumption and lost data packets are reduced.

Description

Technical field

[0001] The invention relates to an adaptive monitoring matching anti-interference method of a wireless sensor network, which is based on the communication quality and energy-saving analysis between receiving and sending nodes of the wireless sensor network, and belongs to the technical field of wireless sensor networks. Background technique

[0002] Wireless Sensor Network (WirelessSensorNetwork, WSN) is a new type of measurement and control network that integrates wireless communication technology, sensor technology, embedded distributed computing and intelligent information processing technologies, which can coordinate real-time monitoring of information on various environments or monitored objects , Perceive and collect and transmit to users.

[0003] With the rapid development of the Internet of Things technology, wireless sensor networks, as the key technology of the Internet of Things, have higher and higher anti-interference requirements in a variety of appli...

Examples

Embodiment Construction

[0025] The specific embodiments of the present invention will be further described below in conjunction with the drawings.

[0026] In practical applications of the present invention, a zero-IF receiver is generally used for wireless sensor network communication. The local oscillator of the zero-IF receiver has the same frequency as the useful RF channel, so that the IF frequency of the receiver is zero, completely eliminating image interference. When the receiver is awakened, there will be a very short time RSSI channel sampling. Using RSSI high-speed sampling detection, the time to obtain the RSSI sample value is very short, usually the inverse of the baud rate. High data rate can not only reduce the time of data transmission, but also save the energy consumption of monitoring. The invention is suitable for occasions where the electromagnetic environment is complicated, the load is low, and the requirements for delay and throughput performance are not high. Because adaptive wa...

Technical field

[0001] The invention relates to an adaptive monitoring matching anti-interference method of a wireless sensor network, which is based on the communication quality and energy-saving analysis between receiving and sending nodes of the wireless sensor network, and belongs to the technical field of wireless sensor networks. Background technique

[0002] Wireless Sensor Network (WirelessSensorNetwork, WSN) is a new type of measurement and control network that integrates wireless communication technology, sensor technology, embedded distributed computing and intelligent information processing technologies, which can coordinate real-time monitoring of information on various environments or monitored objects , Perceive and collect and transmit to users.

[0003] With the rapid development of the Internet of Things technology, wireless sensor networks, as the key technology of the Internet of Things, have higher and higher anti-interference requirements in a variety of appli...

Examples

Embodiment Construction

[0025] The specific embodiments of the present invention will be further described below in conjunction with the drawings.

[0026] In practical applications of the present invention, a zero-IF receiver is generally used for wireless sensor network communication. The local oscillator of the zero-IF receiver has the same frequency as the useful RF channel, so that the IF frequency of the receiver is zero, completely eliminating image interference. When the receiver is awakened, there will be a very short time RSSI channel sampling. Using RSSI high-speed sampling detection, the time to obtain the RSSI sample value is very short, usually the inverse of the baud rate. High data rate can not only reduce the time of data transmission, but also save the energy consumption of monitoring. The invention is suitable for occasions where the electromagnetic environment is complicated, the load is low, and the requirements for delay and throughput performance are not high. Because adaptive wa...

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