Method for regulating emission power for saving wireless node energy consumption

Abstract

The invention relates to a launching power regulation method saving the wireless node energy consumption, which belongs to the wireless communication technology field. The method comprises the following steps: sending nodes transmit N data packets to receiving nodes; the packet-receiving ratio q can be worked out according to the confirmation frames quantity; when the packet-receiving ratio q is bigger than the preset lower limit qt, if the launching power p is Pmin, the operation is over; if the P is not the minimum value, the P value can be lowered, and the packet-receiving ratio q can be worked out according to the confirmation frames quantity; if the packet-receiving ratio q is lower than the preset lower limit qt, and the current P is not the maximum value, the P can be heightened, and the operation is over; the packet-receiving ratio q is lower than the preset lower limit qt, and the current P is Pmax, and the packet-losing ratio under the temporary storing current launching power is qmax; sending nodes can lower P and transmit the N data packets to the receiving nodes; the packet-receiving ratio q can be worked out according to the confirmation frames quantity; if the packet-receiving ratio q is not lower than the r*qmax, the new packet-receiving ratio q can be worked out according to the confirmation frames quantity; if the packet-receiving ratio q is lower than the r*qmax, the P is stopped heightening. The method can ensure that the wireless node can meet the least energy consumption application requirements, thus effectively prolonging the service life of the wireless node.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a transmission power adjustment method for saving energy consumption of wireless nodes in application scenarios using low-power wireless local area network (WLAN) and wireless personal area network (WPAN) technology for communication, sensing, and control. Applicable to IEEE 802.11, Zigbee and other wireless protocol frameworks. Background technique [0002] In recent years, wireless network technology has developed rapidly. Communication, sensing, and control systems based on wireless networks have the characteristics of self-organization, strong mobility, and flexible layout. It has a very broad application prospect. In order to ensure the flexibility of the system, most wireless nodes are powered by batteries. With the development of node miniaturization, the battery power that nodes can carry is relatively limited. The contradiction between the lon...

AI Technical Summary

Problems solved by technology

[0004] The current energy-saving technology includes three aspects: 1) chip layer, which achieves low power consumption by improving chip integration and other technologies; 2) media access control (MAC) layer, which adopts the energy-saving mode (PSM) in The cooperation of the system goes to sleep when there is no task to save power consumption; 3) At the MAC layer, reduce the transmit power of the node; the technical progress of the first aspect can benefit all applications, and the use effect of the second aspect is related to specific applications , the third aspect is that the existing method is to calculate the transmission power according to the wireless channel attenuation model. This method is suitable for an ideal environment, mainly reflected in the theoretical analysis level, and has not been applied in practice.

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