Communication device and signal transferring method

Abstract

The embodiment of the invention provides a communicator which comprises a wireless modem and an application processor, wherein, the wireless modem is electrically connected with the application processor through a communication channel; and the wireless modem transmits a message containing signal change to the application processor through the communication channel after receiving the message. The embodiment of the invention further provides a method for transmitting signals. The embodiment of the invention reduces the probability of wakening the application processor through the wireless model under the condition that the original normal message interaction between the application processor and the wireless modem is not affected, and reduces the standby power consumption of a smart mobile phone in the severe conditions of wireless signals (downtowns with dense signals and quick movement).

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a communication device and a signal transmission method. Background technique [0002] Smartphones are mid-to-high-end products of mobile phones. The main frequency of their CPU is getting higher and higher, which has exceeded 500MHZ. There are more and more integrated functions, including large-screen LCD (Liquid Crystal Display, LCD), Bluetooth, GPS, WiFi ( Wireless Fidelity) and MTV, etc. At the same time, the wireless standards supported are becoming more and more abundant, including GSM / GPRS / EDGE / UMTS / HSDPA, CDMA2000 and TD_SCDMA, etc., so the power consumption is also getting higher and higher. Therefore, under the conditions of limited mobile phone size and limited battery capacity, how to improve the standby time of smart phones and improve user experience is a severe challenge. [0003] A smart phone includes an application processor (Application Processo...

AI Technical Summary

Problems solved by technology

T1 is the time it takes to process measurement and paging messages when the wireless signal is good, about 20ms, and I1 is the average current for wireless Modem processing measurement and paging, about 30-50mA (Vbat=3.7V); in the figure The lower part is a schematic diagram of the power consumption waveform of a smart phone when the wireless signal is bad. When the signal level changes or the network is lost, the wireless Modem is in the running mode, and the wireless Modem wakes up the APP at the same time, and transmits relevant information to the APP. At this time, the wireless modem Modem and APP are both in the running state, as shown in the figure, T2 is the time it takes to process measurement and paging messages when the wireless signal is bad, about 5-10s, I2 is the average current of Modem and APP running at the same time, about 40 ~80mA or so (Vbat=3.7V), it can be seen that when the wireless signal is often bad (such as once every 10 minutes), the standby power consumption of the system is 5 to 10 times higher than that when the signal is good

[0006] In the process of realizing the present invention, the inventors found that there are at least the following problems in the prior art: during the standby process of the smart phone, when the signal level changes and the network is lost, the wireless Modem can only wake up the APP. This message is passed to the APP

Since the duration of one wake-up sleep of the APP is relatively long (5-10s), and the power consumption of the APP is relatively large, the power consumption of the smart phone increases rapidly and the standby time is reduced.

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