WiFi access device energy-saving method based on traffic filtering and Web cache prefetching

Abstract

The invention relates to an energy saving method for a WiFi access device based on traffic filtering and Web cache prefetching. When one HTTP request is transmitted to a remote Web server by the WiFi access device, TCP links are divided into two sections, namely the first-section TCP links are connected with the WiFi access device and AP and the second-section TCP links are connected with the AP and the Web server; the AP receives the HTTP request and checks the cache through the first-section TCP links, if corresponding response data are present in the AP buffer, the response data are returned to the WiFi access device; otherwise, the HTTP request is transmitted to the Web server through the second-section TCP links; after the AP receives the response of the Web server, the response data of the requested webpage are collected, are filtered through preset flow control rules, and then the filter data are stored into the AP buffer, and returned to the WiFi access device through the first-section TCP links; the WiFi access device enters the dormant state when the data are not received and dispatched.

Description

technical field [0001] The invention relates to the field of wireless network data transmission, and more specifically, relates to a method for saving energy for WiFi access equipment based on traffic filtering and Web cache prefetching. Background technique [0002] With the increase of wireless network applications, WiFi access devices need to consume more energy to complete computing and communication services, and the continuous use time (life time) of batteries is significantly shortened. Among them, network communication interface cards, CPU and LCD account for a relatively high proportion of energy consumption. . The emergence of new network applications has made the energy bottleneck of WiFi access devices increasingly obvious, while the annual growth rate of battery capacity is only 5%. Under the IEEE 802.11 standard, WiFi access devices consume a lot of power in the state of listening and idle waiting, highlighting the problem of energy inefficiency. Therefore, i...

AI Technical Summary

Problems solved by technology

However, the centralized energy-saving mechanism mostly adopts detailed scheduling algorithms, which greatly modifies the transmission process of WiFi access devices, and is closely related to the network topology structure, making it difficult to be compatible with existing standards.

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