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WiFi和4G,到底哪个更耗电没想到吧

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在使用我们的手机的过程中,屏幕上可能会弹出一个屏幕,提示您电池电量不足。

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也许下图是我们对手机电源态度的真实写照

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如果此时无法为手机“开源”充电,则必须尽可能节省电量“油门”,例如关闭移动卫星定位功能,降低屏幕亮度和降低外部音量。

WiFi和4G的相同点是两者都是无线连接,因此两者的功耗主要与手机的传输和接收功率有关。发射功率很大程度上与设备和信号源之间的距离有关。通常,距离越远,所需的发射功率越大。

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首先,WiFi,WiFi(Wireless Fidelity)技术是基于IEEE 802.11系列标准的无线网络通信技术的品牌。与蓝牙技术一样,它属于短程无线技术。该技术目前使用2.4 GHz和5 GHz左右的频段。

不同协议下的WiFi性能不同。

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在这种情况下,4天线路由器工作在2.4GHz频段(MIMO 4X4),最大下载速率高达600Mbps,覆盖范围高达70米,理论性能在5GHz频段更好。设备下和实际场景下的数据随着手机与路由器之间距离的增加,手机接收的WiFi信号强度会降低,路由器的WiFi信号覆盖范围也达不到理论值价值70米甚至更低。这个值。

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WiFi信号强度

The transmission power of most wireless routers is between 50mW and 100mW. The router WiFi realizes short-range wireless network communication.

The following describes the 4G network. Here, "G" refers to "Generation", and 4G refers to the fourth generation communication technology.

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History of evolution from 1G to 5G

The current mainstream mobile communication standard 4G LTE theory has a maximum bandwidth of 150 Mbps. LTE-A (also known as LTE-Advanced) is an enhanced version of LTE that uses carrier aggregation technology and peak speeds of up to 1000 Mbps.

If you want to maintain a stable and fast 4G network connection, you must perform frequent uplink and downlink signal flow between the mobile phone and the base station. At this time, the transmission power of the mobile phone is generally between 100mW and 1000mW. When the signal state is good, the normal use is about 100mW to 200mW.

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4G signal strength

But when the signal is not very good, the mobile phone has to transmit a more powerful signal to search the network. At this time, the mobile phone's transmission power tends to be larger, so it will increase the power consumption.

Usually the base station will be built at a high level to ensure coverage efficiency, as shown in the figure below.

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Since the base station antenna is a directional transmission signal method, in order to ensure sufficient coverage, generally a group of arrays usually consists of three antennas. In this way, a 4G base station typically covers a range of 1-3 kilometers. It can be seen that the coverage of the 4G base station is much larger than that of the WiFi signal.

In addition, for the question given by the title, Apple also gave an official battery life data.

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Here LTE refers to 4G

xx在这种情况下,使用WiFi比使用4G电池寿命更长。

因此,由于两者之间的覆盖差异,4G网络的功耗高于WiFi网络的功耗。

说到这里,每个人都应该知道,当手机电量耗尽时,你应该关闭WiFi或关闭4G。

因此,连接WiFi是为了节约能源,减少排放和低碳生活。

“可以说WiFi非常新鲜和精致”[搞笑]