3results about How to "Expand communication range" patented technology

The invention discloses an anti-interference and anti-eavesdropping cooperative transmission method for a high-security wireless network, and relates to the technical field of mobile communication. The method is applied to a communication system comprising an information source, an information sink, an anti-brittle relay, an enemy jammer and an enemy eavesdropper, and the information sink comprises a primary user and a plurality of secondary users. A consensus signal is sent through an anti-brittle relay, a main user detects the working frequency band and the interference type of an enemy jammer by adopting a machine learning algorithm, and the working frequency band and the interference type are fed back to the anti-brittle relay through encryption broadcast; the anti-brittle relay performs deceptive coding on a source end signal based on the information, and transmits the coded signal to a corresponding channel through beam forming, so that the enemy jammer converts the coded signal into a temporary relay node and sends an available signal; and the primary user separates the mixed signals and restores source end signals through maximum ratio combination, and the secondary user realizes communication coverage expansion through the converted relay node. The method realizes resource utilization of interference, synchronously improves anti-interference and anti-eavesdropping performance, optimizes spectrum resource allocation, and is suitable for complex communication scenes with high security requirements.

The application discloses a kind of mobile control terminal, comprising: one or more touch modules, touch module is used to generate control instruction, control instruction can trigger air conditioning equipment to perform pre-configured operation;Bluetooth low power consumption module, bluetooth low power consumption module can work in broadcast mode, continuously send broadcast packet including control instruction;Wherein, broadcast packet is received and parsed by distributed control system in communication range;Distributed control system includes communication connected control device;Distributed control system is based on the signal intensity filtered and sorted based on parsed, selects target control device from it and sends target identification;Target control device sends the control instruction received from broadcast packet to the air conditioning equipment connected with communication;Also provide a kind of control device and a kind of air conditioning system.This application does not need to be matched, also does not need to be used in straight line unobstructed environment, and energy consumption is extremely low, battery dependency is low.

A bracket for amplifying the antenna gain associated with an installable radio frequency identification (RFID) tag is disclosed. An example device includes a bracket and an RFID tag. The bracket has a base, a first zigzag amplifying arm, and a second zigzag amplifying arm. The first zigzag amplifying arm is connected to the base and extends away from the base along a first direction, and the second zigzag amplifying arm is connected to the base and extends away from the base along a second direction, opposite to the first direction. The RFID tag is mounted to the base of the bracket. The first and second zigzag amplifying arms are respectively configured to: amplify the antenna gain associated with the RFID tag; or increase the communication range associated with the RFID tag.