When we were investigating the GPRS coverage area, there was no dedicated instrument! We use a mobile phone to test the local GPRS coverage! Can you say that the higher the number of cell phone signal cells, the higher the GPRS signal, and the better the coverage! And vice versa
You can use the number of cell phone signals to estimate the signal coverage intensi
To implement GPRS services, three new logical network entities need to be introduced in the existing GSM network: Service GPRS Support Node (sgsn) and Gateway GPRS Support Node (ggsn) and Group Control Unit (PCU)Sgsn: Service GPRS Supporting NodeGgsn: Gateway GPRS Supporting
GPRS at Command Chinese (1)
FUNCTIONS
At COMMANDS
DETAILS
Factory Certification
At+cgmi
Obtain the manufacturer's logo
Mode Authentication
At+cgmm
Query Support Bands
Revision Certification
At+cgmr
Querying software versions
Production serial Number
At+cgsn
Query Imei NO.
Te settings
At+cscs
Select a Support network
Query
As a mobile communication system, the setting of parameters related to wireless devices and interfaces in GSM network is very important to the service performance of the network, such as the coverage of the community, the distribution of signaling traffic, and the business performances of the network. GPRS technology provides a packet data service for GSM network, it has its own independent wireless parameter setting which differs from the ordinary GS
salary and relatively low water, hey, don't take bricks and shoes at me, I'm afraid, I). Finally, I finally asked a handsome guy and told me this .)D. Check the/etc/host. conf script to ensure that order hosts and bind exist.4. E. Create the following file in the/etc/PPP directory (how to paste the attachment here? Really dizzy, I want to paste it one by one. It's hard to work a bit. Fortunately, today I am in a good mood, so I will paste it together, haha. For better understanding, each file i
Recently, many of my friends have asked me why my GPRS package is MB without limit to cmwap cmnet, and the price is only 10 yuan in.In fact, I have mentioned this in my previous article because I used unconventional methods to apply for a mobile customization business-Wanhua, so I didn't give a detailed introduction at that time, currently, the method that I know can apply for this GPRS package is only appl
GPRS-PDP context activation process (external protocol stack) GPRS-PDP context activation process www.2cto. comGPRS wireless data transmission terminal using the network to achieve full duplex data communication with the host computer. The terminal must be attached with a GPRS network, and login to the Internet and any common PC machine connected to it should be
With WiFi indirect control of the experience of the intelligent car, it is natural to think of, but also through the GPRS remote control intelligent car, because from the principle of communication, the two actually do not have what is essentially different, are based on the socket TCP communication, its control links are as follows:
Mobile phone ===> GPRS (TCP/IP) ===> PC ===> Zigbee (serial 232/ttl) ===>
First, let's take a look at the speed comparison between GPRS and edge:
Network
Speed
Stability
Theoretical speed
Theoretical download speed
Edge
384-473kbps
60kb/s
Very stable
GPRS
171.2 kbps
20kb/s
Average
From the above Parameter comparison analysis, the edge network speed is much higher than the current
Question: Why should there be GPRS.Answer: At present, use mobile phone to surf the internet still appear somewhat unsatisfactory.Therefore, the comprehensive solution GPRS also came into being,This new technology will enable you to connect quickly and easily at any time, anywhere,At the same time the cost is very reasonable. To put it simply: the speed went up, the content was rich, the application increased,And the cost is more reasonable.
Question:
Absrtact: This paper introduces an electronic navigation and remote monitoring system based on the combination of GPs and GPRS. The position information data of the GPS module output is sent to the micro industrial computer through the RS-232 serial interface, the GIS running on the industrial control computer shows the current position of the vehicle, realizes the autonomous navigation, meanwhile, uses the GPRS
This article uses the GPRS module in Linux to implement wireless Internet access. The code and method are difficult to understand, so you must read the code patiently. I believe you can learn a lot.
Dial-up Internet access through GPRS module in Linux
First from the/usr/share/doc/ppp-2.4.4/scripts cp ppp-on, PPP-off, PPP-on-dialer three scripts to/home/A/PPP. Then make the following changes:
In PPP-on
1. C
GTP(GPRS Tunneling Protocol (GPRSTUNNELLINGPROTOCOL))
GTP (GPRS Tunneling Protocol (GPRSTUNNELLINGPROTOCOL))
edit
This entry is missing Information Bar, business card diagram, supplementary related content Make the entry more complete, you can quickly upgrade, hurry to edit it! GTP is a set of IP-based communication protocols that support universal Packet Radio Service (
For GPRS serial port programming in linux-General Linux technology-Linux programming and kernel information, see the following for details. I encountered a problem during GPRS development over the past few days. the serial communication program I wrote can communicate with super terminals on XP. I sent a string to xp through the development board: ATD15170476687; super keys on XP will print this string. In
Android-Socket transmission GPRS network, android-socketgprs
The mobile phone uses GPRS network and server Socket communication, code: http://download.csdn.net/detail/wu20093346/7768481
Use UDP protocol and Socket debugging tools for testing.
SocketActivity. java:
package com.example.socket;import java.net.DatagramPacket;import java.net.DatagramSocket;import java.net.InetAddress;import android.os.Bundle;imp
For GPRS and CDMA DevelopmentArticleThere are already a lot of online connections, but the GPRS and CDMA connection libraries provided by the Windows Mobile SDK only support the C ++ version (that is, the Connection Manager API ), most of the articles on the Internet are in C ++. Although C # is also written, most of the packages are incorrect and have not been well tested, this article describes how to use
Run # makemenuconfigNetworkDeviceSupport agrave; lt; * gt; PPP (point-to-pointprotocol) support nbsp
Support PPP for Linux kernel
Go to the Linux kernel directory and run # make menuconfig
Network Device Support à
[*] PPP multilink support
[*] CSLIP compressed headers
Ppp kit installation
Ø download ppp: × the latest version is 2.4.4
Unzip ppp-2.4.4.tar.gz to the Directory
* The default ppp source code directory is $ (PPP)
# Tar zxvf ppp-2.4.4.tar.gz
And then cross-compile ppp:
# Cd $
How to Establish a GPRS connection in Windows Mobile so that the socket can communicate normally
Content Abstract: I use socket for data transmission. It passes debugging through data cable + ActiveSync. data transmission is normal. When I prepare to submit the software to the Quality Control Department, when the real GPRS is used for communication testing, the problem arises and the connection cannot be es
In the development of the project because of the use of WiFi and GPRS network switching, so the study of the code to open WiFi and GPRS work.The following lines of code need to be added to the Androidmanifest.xml file, whether you need to set the appropriate permissions for switching WiFi or switching the GPRS network.1. Switch WiFi networkpublic static void Togg
WAP is the standard of wireless internet, developed by several large vendors, it defines a layered, scalable architecture that provides a comprehensive solution for the wireless internet. One of the principles of WAP Protocol development is to be independent of the air interface, the so-called independent of the air interface refers to the WAP application can run on a variety of wireless hosting network, such as TDMA, CDMA, GSM, GPRS, SMS and so on.
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