backhaul wimax

connected networkGenerally, devices can be connected to mobile networks, WiMAX, Wi-Fi, and Ethernet. By querying the network type of the current activity, you can do the right thing based on the network bandwidth. Boolean iswifi = activenetwork. GetType () = connectivitymanager. type_wifi; Using a mobile network is more costly than Wi-Fi, so in most cases, some data acquisition operations are reduced in a mobile network. Similarly, some operations

noting that IMS has "Access independence". It not only supports 3G Mobile Network/GPRS access, but also supports WiMax and WLAN Access. When the POC service is implemented based on the IMS network, the IMS network uses various call session control functions (cscf, call session control function) and the vested user server (HSS, home subscriber server) the implementation of SIP-based registration (scscf implementation), SIP-based authentication (S-CSCF

from a wired network to a 802.11 or 802.16 connection. The goal of the working group is to standardize the switching process so that devices can achieve interoperability when roaming between different types of networks. Currently, 802.11 of users can move around the hotspot and keep the connection, but if they leave the hotspot connection, they will be disconnected. With 802.16e, users will be able to maintain "optimal connection ". Use 802.11 connections in the hotspot. You can connect to 802.

industry, it is important to have Internet access at any time.When AD bandwidth is insufficient: most enterprises use ADSL. According to statistics, most broadband users in small and medium-sized enterprises use ADSL for Internet access. However, in some regions, the relative bandwidth of ADSL is relatively small. For example, the 64 K/64 K line is obviously insufficient for enterprise applications, but the application for optical fiber is more expensive than several ADSL lines, in this case, u

is important to have Internet access at any time. When AD bandwidth is insufficient: Most enterprises use ADSL. According to statistics, most broadband users in small and medium-sized enterprises use ADSL for Internet access. However, in some regions, the relative bandwidth of ADSL is relatively small. For example, the 64 K/64 K line is obviously insufficient for enterprise applications, but the application for optical fiber is more expensive than several ADSL lines, in this case, using a multi

find a platform that provides more innovation and buy mobile phones with those platforms from manufacturers. The market is no longer in need of naive applications, and it will take a few years. when conditions are met, the market will need a platform that can be easily developed, and Linux is such a platform. Until they can talk about all the potential of Linux and create a Linux phone, which will be a smart phone with a multitasking operating system, he can even let manufacturers and operators

a larger Wi-Fi network with its partner Earthlink in San Francisco, California. The operating mode is also free of charge like mountain view. However, San Francisco's free Wi-Fi Plan is currently on hold.Since the beginning of the year, major U.S. cities have remembered the tide of building a Wi-Fi man. Earthlink has become a pioneer in the industry and won contracts from multiple cities. In general, the company provides free narrowband and paid broadband services, so that the urban Wi-Fi netwo

required to have extremely difficult eavesdropping features during military development. The characteristics of ultra-wideband transmission are that the pulse signal cycle is extremely short (often in nanoseconds or second-level), and the transmit power of these signals is lower than the noise level of traditional radio receiving equipment, therefore, it is difficult to use a common RF receiver. In addition, the private keys in the UWB are encrypted using AES (Advanced Encryption Standard), and

Let's make a bold prediction. Where do you think the center of wireless applications will be in the future? Enterprise/campus wireless lan? Home wireless network? Or is it a ubiquitous Public Space Network? Perhaps none of them. From the current development trends, mobile networks based on various wireless network technologies are more like the answer to this question. It does not stay in a specific area, but follows everyone to provide personalized services-this person may stay in the company's

performed under the Signaling connection) to fully simulate real use cases. In addition, CMU300 is a single instrument with a very cost-effective performance. It covers the main test items in 25.141 and also supports 3GPPTS25. 141R5 includes HSDPA technology testing, so it is particularly suitable for R D and production. The above FSMU not only supports all kinds of RF tests for WCDMA base stations and terminals, but also supports various standard base stations and terminals such as GSM, CDMA

name of 3G? 3rD Generation third-Generation digital communication 9. How many mainstream 3G standards are there in the world? 4 types, WCDMA and TD-SCDMA, CDMA 2000 and WiMAX 10. Which of the following communication operators in China has obtained the most widely used and mature 3G standard licenses in the world? China Unicom Basic knowledge of wcdma q A-page 2 11. On which day will China Unicom announce its official launch of WCDMA? May 17 Internat

WLAN uses WEP, WPA, and WAPI communication protocols to ensure communication security. The development of WLAN business is in the ascendant. the wireless network deployed in the office of the Organization enables seamless switching between the work station and the meeting room to bring convenience to its employees. What methods does WLAN networking technology use to ensure communication security? Wi-Fi is a non-profit organization that defines and authorizes WLAN access technology. Generally, th

WiMax wireless access, etc, they all have a network architecture shown in 1: the architecture of the broadband access network includes the following components: (1) User-Defined NetworksA user-defined network is a local network composed of a home gateway, which is physically owned by the user. DSL is currently the most common user access method. (2) Access NodeThe Access Node completes the physical termination of the user cable, or the termination of

development of fixed mobile convergence technology. Mobile Wireless LAN technology options include cdma 2000 and its high-speed data overlapping EV-DO (optimized innovative data) and GSM/UMTS and its high-speed data overlapping HSDPA (high-speed downlink group access ). In addition to these options, two new IEEE mobile technologies are coming soon, namely 802.20 and 802.16 (WiMAX ). In addition, there are other mobile data technologies, including gen

important. "Nokia spokesman Gary touti said. Linux is currently the most popular open-source operating system, which can be improved and shared by the public during use. There is a very large development community behind it to provide support, therefore, it is able to develop more user-absorbing programs at a very low cost, which can meet Nokia's needs. Nokia's hand-written Internet device (Internet tablet) is mainly intended for people with certain technologies, and can also provide supp

attract users with content rather than communication capabilities. Therefore, the number of businesses, the speed of business development and provision Replace the bearer network to become the core competitiveness of operators. It is unrealistic to develop, provide, and maintain a wide range of services by the operator. It is a trend for a third party to develop new services. The value chain of NGN is longer than that of the traditional value chain, with more links. ISP, ICP, software developer

the same network. Like 802.11b, IEEE802.11g also works in the 802.11 GHz band, which is 5 times faster than the current general 802.11b and fully compatible, when purchasing a device, we recommend that you check whether the protocol standard is supported. Select the one that suits you. The 802.11g standard is now available. 4. What are wireless networks? Wireless Personal Network (WPAN): Wireless Personal Area Network stands for Bluetooth. It features a transmission distance of less than 10 m a

Diversity) and Time Diversity TD, Time Diversity) technology. Multi-carrier Orthogonal Frequency Division Multi-Channel OFDM, Orthogonal OFDM) system is transmitted by multi-channel narrowband Orthogonal sub-carrier at the same time. In recent years, it has been applied in some practical scenarios and proved to have good results. The ARO mentioned earlier in this article is time diversity and has been officially used in some fixed wireless access networks. It indicates that it is beneficial to

Some key LTE technologies in Vernacular I have never been in touch with the actual LTE equipment because I am working on CDMA, but I have read a lot of theoretical materials, including the red books. I personally feel that Chinese books are not very good yet, it covers a wide range of topics, but there are very few details. If you want to study it in depth, unless you look at the agreement, but how tired the agreement looks, not like the books of previous motorcycles and Ericsson, the knowledge

. Capacity and efficiency to be verified Shen Jia, Chief Engineer of the wireless and mobile Research Department of the Institute of Standards at the Institute of Telecommunications and research, has received much attention for the same-frequency networking: First, the question of "ability and inability" is that the core broadcast channels, synchronous channels, and other channels supporting the basic operation of mobile networks are still unclear if they can be connected to the same-frequency n