A Joint Optimization Method of Data Rate and Power Control in WLAN

Abstract

The invention belongs to the technical field of communication, and relates to a joint optimization method of data rate and power control in WLAN, which includes random sampling of data packets in a distributed sampling manner to obtain different sampling rates, and uploading the sampling rate value to a controller to control The controller calculates the sending success rate of sampling packets through weighted moving average, and generates a statistical table corresponding to the data rate and throughput; selects the reference transmission rate and sends data packets with different power values; the controller estimates the throughput at different rates, and updates The throughput of the rate statistics table; the controller calculates the utility function, obtains the combination of the rate and the power that make the utility function value maximum, and the AP adjusts its own working state according to the combination of the rate and the power; the present invention, under the condition of ensuring the data throughput, Reduce the AP transmit power. Reducing the transmit power can reduce signal interference, reduce the impact on neighboring APs, increase the spatial multiplexing rate, and further improve the quality of network communication.

Description

technical field [0001] The invention belongs to the technical field of communication, and relates to a joint optimization method of data rate and power control in WLAN. Background technique [0002] In recent years, with the rapid popularization of smart terminals, mobile data traffic has grown exponentially. According to Cisco's forecast, global mobile data traffic will increase seven-fold between 2016 and 2021, of which 98% of mobile data traffic will come from "smart" devices, reaching 30.6EB per month. In order to meet the increasing data traffic demands of users, operators plan to deploy a large number of wireless access point (Wireless Access Point, AP) devices in public areas such as schools, hospitals, and enterprises. Dense deployment of WLAN systems can provide effective coverage and high-bandwidth access for mobile users, and more and more users choose to access the network through wireless. According to the 42nd "Statistical Report on Internet Development in Ch...

AI Technical Summary

Problems solved by technology

The AP provides a command line window for users to meet the configuration requirements of different network environments. However, the AP cannot make real-time adaptive adjustments to the transmission power during data interaction.

[0010] 2. Since the AP does not have an adaptive power control module, when deploying AP equipment, its transmit power is the default maximum state. When WLAN is densely deployed, it will cause serious co-channel interference problems due to the lack of orthogonal channels, and the throughput performance cannot be achieved. Meet the demand, contrary to the original intention of densely deploying APs

[0011] 3. The IEEE802.11 standard supports multiple PHY data rates, but does not define the best selection method

However, not enough to maximize network throughput performance

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