at t 3g frequency

If you are developing your own board, you need to use the GPIO pin to control the 3G module boot/shutdown, the following article will be helpful to you, is the processor IMX6 and ZTE MG3732 module as an example.One, pin connectionThe processor's gpio3_gpio[9] connects the on/off (29) pin of the 3G module to control the power on/off of the 3G.Second, switch machine conditionsThe On/off pin is turned on conti

1. Please make sure that one of the SIM cards you currently use is a Unicom 3G card. (for example, insert the card slot into Unicom 3G card)2. Under the Standby page, click "Application".3. Click "Set".4. Slide the mobile screen up and click "More Networks" in "Network Connection".5. Click on "Mobile network".6. Click on "Network Mode".7. Click "WCDMA only".Note: If your current location does not cover the

The actual operating frequency of the CPU is the product of the outer frequency and the multiplier. The outer frequency is like the width of the road, and the multiplier is like the number of vehicles allowed to pass through the road per unit time. At present, the external frequency of mainstream CPU is usually 66, 100

The method mentioned here is to convert the cell phone signal is not good (that is, 2G signal) to the 3G signal to the Internet to improve the speed of the Internet, we often see in a place (such as the subway) mobile phone is clearly 3G card, but the display is 2G signal, this is the phone old between 2G and 3G switch, at this time we think of a variety of ways

The best answer is:Http://www.zhihujingxuan.com/23124.htmlTCP connection, HTTP connection, and socket connectionHttp://www.blogjava.net/thisliy/archive/2009/11/08/301615.htmlThe TCP/IP protocol-based socket communication between the Android and server terminalshttp://blog.csdn.net/ryantang03/article/details/8274517CDMA wireless terminal with embedded TCP/IP protocolHttp://www.ednchina.com/ART_24871_29_20027_AN_57a2cee9.HTMHow does the phone surf the internet?

init. GPRS-pppd connection, After normal communication, a 3G network connection flag is displayed. Then set the APN. After saving the settings, restart the system and the system will automatically connect to the Internet. 4. Manually test the 3G modem 1. Load the driver If the driver is loaded successfully, the/dev/ttyusb * device will appear. 2. Go to the/etc/PPP/peers directory and run Pppd call cmnet

The power frequency machine is a traditional X-ray equipment that uses 50Hz AC as the power supply of High Voltage Generators. We know that the composition of X-ray machine (or X-ray equipment) can be roughly divided into two parts: X-ray Generator (X-ray source) and auxiliary equipment. The following discussion will confuse the x-ray machine with the X-ray generator without distinction. High-voltage power supplies of power

Direct Digital Frequency Synthesis Technology and Its Implementation of C ++, digital frequency synthesis implementation DDFS-Direct Digital Frequency Synthesizer Direct Digital Frequency synthesis technology can be used to generate periodic signals of arbitrary waveforms. The so-called DDFS is simply a look-up Table m

I. BACKGROUND Because of the current commercial situation in Japan and the 3G test conducted in Europe did not achieve the expected results, 3g-foma operators 3G plans are further postponed , the company has also been WLAN (Wireless LAN) and 2.5G GPRS integration on the agenda, in order to strengthen the broadband and applicability of wireless Internet access, t

With the increasing number of overclocking players, the asynchronous memory technology has also begun to flourish. However, the technological development has also brought about more confusion. Even the "prawns" cannot fully figure out the current asynchronous memory technology. It is precisely for this reason that memory asynchronous technology is necessary to solve the problem. If you are interested, you may go on to understand what the memory asynchronous technology is like! 1. What is mem

, rather than fully balanced direction. Due to the difference between 2G and 3G technology, the main aspect of 2G is frequency planning, while 3G is a process with limited interference, limited capacity and limited quality, which takes more factors into consideration. The overall goal of wireless network planning, operators in a certain period of time to carry o

First make clear memory of three frequency, core frequency, operating frequency, equivalent frequency (also into interface frequency), usually said that the DDR2 800 of the 800 is the equivalent frequency of the memory (interface

means to support the interconnection of wireless MAN and Multi-Point Base Stations in 3G and 3G Evolution. The potential market sizes of the two are also very different, so far, wireless WiMAX technology will become the terminator of 3G. In terms of coverage, 802.16e must sacrifice coverage and mobility to obtain high data access bandwidth (30 Mbit/s, therefore,

accelerating gradually. (4) CDMA2000 Camp has more users From the number of users, as of the end of December 2004, the global use of CDMA2000 1X and WCDMA and other 3g technology users have reached more than 159.1 million people, including CDMA2000 1X users 130 million people, ev-do users 12.6 million people, WCDMA user 16.5 million people. However, from the increase in the number of users, the number of WCDMA users increased significantly faster

reuse statistics based on users, thus improving the network bandwidth utilization.Bandwidth savings greatly reduce costs. Whether you use leased lines or frequency resources to build a 3G transmission network, the bandwidth savings are reduced for the operation costs, bandwidth is small, this means that the network scale can be reduced, and the corresponding operation and maintenance costs can be greatly r

Use Excel to generate a frequency distribution table and a frequency distribution histogram Fujian Nanping High School Zheng dinghua 353000 mobile phone 13859389247 Abstract: relying on the "analysis tool" provided by Excel, the actual operation and solution analysis are carried out through specific examples to solve the statistical problem perfectly and efficiently, this frees teachers and students from co

The capacitor around 10 PF is used to filter out high-frequency interference signals, and the capacitor around 0.1uf is used to filter out low-frequency ripple interference. Can play the role of regulator The specific capacity of the filter capacitor depends on the main operating frequency on your PCB and the harmonic that may affect the system.Frequency. You ca

Image frequency domain Transform and its application 1. Noun Explanation: (1) Spatial domains: English: Spatial domain. Encyclopaedia: Also known as image Space (imagespace). A space composed of image pixels. In the image space, it is called spatial domain processing to deal with the pixels directly with the length (distance) as the independent variable. (2) Frequency domain: English: Spatial

In the study of digital signal processing, many newly-started friends often confuse the analog frequency, the digital frequency and the relationship between them, even some friends who have some knowledge of digital signal processing are puzzled by this problem.The frequency we normally refer to is the analog frequency

Fujian Nanping High School Zheng dinghua 353000 mobile phone 13859389247 Abstract: relying on the "analysis tool" provided by Excel, the actual operation and solution analysis are carried out through specific examples to solve the statistical problem perfectly and efficiently, this frees teachers and students from complicated statistical operations and drawing to gain a sense of accomplishment. Keywords: Excel statistical histogram generation In statistical teaching and learning, statistical ana