gsm femtocell

, route selection, Echo offset, and overload control) Vlr: access the user Location Register (stores the user information within the jurisdiction of the MSC integrated with it. Note: The data is valid only when the user is in the service area) HLR: User Location Register (a central database of the entire mobile communication system that stores data of all users in the HLR control zone) AUC: authentication center (storing AuthenticationAlgorithmAnd encryption key) EIR: mobile device ID reg

GSM is a 2G network and can be used by China Mobile Unicom.CDMA is a 2G network of China Telecom. 3G:WCDMA is China Unicom's 3G network,China Telecom 3G is CDMA 2000,China Mobile 3G is 3g/TD-SCDMA. Both of them are networks that are also supported by foreign countries. That is to say, if you have a mobile phone with this network standard and the software is unlocked, you can use it directly on a foreign card! The third type is China's self-develope

[Exclusive disclosure !] Let the USIM card of TD-SCDMA work in GSM network way! Use a machine supporting 3g wcdma, insert the td usim card, and switch the network selection mode of the 3G mobile phone to the automatic mode. The test was successful on Toshiba g500. The Nokia N95, which is widely used on the Internet, can be recognized or used as a credential. The N95 is a WCDMA support. Cause and analysis: Next time, all the content just writte

/* Hdu 4643 GSM computing Ry-point-line relationship N cities, any two cities have A railway M base station along a straight line between them. Ask how many times A base station needs to be switched from City a to City B. When A base station is switched from base station a to Base Station B, the switchover location is the intersection of the AB center vertical line and the railway (which of the two base stations can be easily switched, sort by distanc

At present, most enterprises and schools are built intranet. and built internal Web site to achieve resource sharing. In order to make users know the latest information on the Internet, many websites have adopted the way of SMS reminder, but using China Mobile or Chinese Unicom SP Way, will greatly increase the cost of the enterprise. Therefore, this article discusses the use of GSM modem and SMS send control to achieve SMS reminders. First of all, i

disk performance warning: SQL Server has encountered occurrence (s) of I/O requests taking longer than [seconds] on file [F:\sqldata\ LOGS\XXXX_LOG.LDF] in database [XXXX] (10). The OS file handle is 0x0000000000000a2c. The offset of the latest long I/O is:0x000004e6511e00 By collecting disk performance information, we found that at the point of the problem, Avg. Disk Sec/read reached 1.444. Usually this value is about 0.03 more normal. The value of 1.444 is obviously quite biased. ConclusionNe

The 3GPP, femto, and broadband forums collaborated to publish the first indoor base station standard on the 3GPP website.       Number Title 22.220 Service requirements for home node B (hnb) and home Enode B (henb) 2

Copy Code code as follows: Declaring Locationmanager objects Locationmanager Loctionmanager; Access to Locationmanager objects through system services Loctionmanager = (Locationmanager) getsystemservice (Context.location_service);

Address: http://www.wangchao.net.cn/bbsdetail_50338.html   Using system;Using system. Collections. Generic;Using system. LINQ;Using system. text; Namespace smstest{/// /// By popcorn 2004.5.// Cnpopcorn@hotmail.com/// Public class cntext{Public

I. Problem Analysis:Recently, I am working on a function to remotely start an application using text message monitoring. The Code is as follows: Import android. content. broadcastreceiver; import android. content. context; import android. content.

In the previous analysis of the request, the writeline operation in at_send_command_full_nolock was terminated, because the operation to write the command to the hardware device was completed here, and the next step was to wait for the hardware

If you send a text message + CNTI: "SM", 3 indicates the third message on the card. Send AT + CMGR = 3 to read this text message. If you want to delete this text message, send AT + CMGD = 3 The following are some AT + CMGD commands: AT + CMGD =

SMS cats are devices used to send and receive text messages. They are the same as mobile phones.Insert the SIM card and connect it to the computer through the (USB or serial port) data cable/PCI slotYou can use related software on your computer to

Chapter 3 add data production for the HLR Board To add a new HLR Bureau in this province, You need to define the signaling points, Signaling routes, and other data in MSC. You also need to define a GTRC pointing to this HLR. Under normal

third (Layer 3) signaling The third layer of signaling is to look at the network operation of the information layer, from the third layer can see the various actions of the network: such as: Call flow, congestion, user busy, location update, System

n.s0022 Answer Hold n.s0023 Automatic Code gapping n.s0024 Network Support for mdn-based message Centers n.s0025 Roamer Database Verification n.s0026 Wireless Radio Telecommunication intersystem non-signaling Data Communication DMH n.s0027 Enhanced International dialing, calling number Identification Callback, calling Party Category Ide n.s0028 Network interworking Between

Currently, the WCDMA access technology is very mature, but there are also many problems. Here we mainly introduce the GSM user upgrade and ARD signing, this section describes speech service switching, WCDMA/GSM services, and load control. It is of great significance to achieve coordinated development of WCDMA/GSM and integration strategies, and to make full use o

text messagesEg. Send the English Short Message "123abc" and use the corresponding ASCII code to send it.At + wscl = // set to send an English text message OKOKAt + cmgs = "13331012788" // different from the GSM module, the CDMA module must add a text message numberQuotation marks123abc + Cmgs: 1OKReturn code:+ Cmgs: N indicates that the message is sent successfully, and N indicates the serial number.2. Send a Chinese text messageThe Chinese text mes

SMS Communication and CMS errors 1. How to establish communication with the GSM Modem2. Do not communicate with the GSM Modem normally or there is always garbled code on the simulation terminal.3. How

December 24, 2003, one of the world's top 500 of the United Arab Emirates Telecom (Emirates Telecommunications Corporation, referred to as Etisalat) officially announced that The WCDMA network from China's Huawei Technology Co., Ltd. was formally put into commercial application, and Huawei, as its exclusive supplier, contracted the National WCDMA Commercial network of the UAE telecom. The cooperation between the two sides will make the UAE telecom become the first in the Middle East and the Arab