Network access device with low power consumption remote wake-up mechanism

Abstract

The present application proposes a network access device with a low power consumption remote wake-up mechanism. One of the embodiments of the network access device proposed in this case includes a signal transmission and reception circuit, a demodulation circuit and a control circuit. The signal transmitting and receiving circuit is used for receiving network signals, and the demodulation circuit is coupled to the signal transmitting and receiving circuit for generating data frames according to the network signals received by the signal transmitting and receiving circuit. The control circuit is coupled to the demodulation circuit, and is used for waking up at least some components of the electronic device when at least two fields of the data frame meet preset values ​​or a data frame including a specific field meets a specific receiving sequence.

Description

technical field [0001] The invention relates to a network access device, especially a network access device supporting a remote wake-up mechanism. Background technique [0002] Nowadays, electronic devices often adopt power-saving mechanisms to reduce energy consumption when idle or with low workload. In addition, the electronic device will also support a remote wake-up mechanism, so that even when the electronic device is in a power-saving state, other devices can still wake up the electronic device by sending a specific data packet, so that it can start normal operation . [0003] Common wake-up mechanisms include using a magic packet or comparing a certain field in a packet to see if it conforms to a specific format (pattern match). For example, the electronic device is woken up by sending 16 repeated MAC addresses (MediaAccess Control address), or a specific format is defined by the operating system, and the network access device of the electronic device compares the r...

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Problems solved by technology

[0004] However, the current communication environment is becoming more and more complex, and the current wake-up mechanism is simply comparing the specific format of a single data packet, thus easily causing the system to be woken up by mistake (false alarm)

For example, in a wireless communication environment, an electronic device may receive signals from many access points at the same time, but when the electronic device should not support wake-up requests sent by other access points, it receives signals from other access points. When taking the wake-up packet sent by the point, if the existing wake-up mechanism is used, the electronic device will still be awakened by mistake, resulting in unnecessary power consumption of the system

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