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are demanding that higher capacity, higher data rates, and advanced multimedia services be supported in the near future. The evolution of the IS CDMA.
Table of contents
- Faculty Profiles
- Roberto Padovani
- Mobile Generations Explained | Interference Technology
- Work and Life in the Mobile Society/Technology/Standards
Based on digital technology, 2G wireless networks offer increased voice quality and capacity over 1G systems.
Based on digital technology, 3G wireless networks offer increased voice capacity and provide higher data rates than 2G and 2. Wi-Fi The A Access Point A network device, or communication hub, that connects wireless devices to a wired local area network LAN. Commonly associated with location-based services LBS.
The first analog cellular phone system commercially deployed in the s. Analog In telecommunications, an early wireless network technology involving the modulation of radio signals, which transmit information as sound waves over radio signals allowing one call per channel. Most wireless transmission is now done digitally.
Android Android is an open mobile phone platform that was developed by Google and, later, by the Open Handset Alliance. The platform is based on the Linux operating system and its applications are written in Java. A standards-setting, non-governmental organization that develops and publishes standards for transmission codes and protocols for use in the United States. ANSI serves as the official U. A set of standard methods or functions that application programs can use to access a particular set of services or tools, such as network services and program-to-program commands.
Asymmetric Encryption - a. Public Key Encryption A method of securing data for transmission that equips each user with two keys, a private key and a public key. A trusted third party often provides keys. Asynchronous Communication signals that do not rely on a shared timing mechanism to transmit and receive information. Backhaul Refers to transporting data or voice between the wireless network and the PDSN packed data serving node, in wireless communications , or between the wireless network and the Internet in a wireless local area network implementation.
Band In wireless communications, a frequency or contiguous range of frequencies. Bandwidth In wireless communications, the width or capacity of a communications channel.
Analog bandwidth is measured in hertz Hz. Digital bandwidth is the volume of data that a channel can carry and is measured in bits per second bps. The base station includes an antenna tower, transmission radios and radio controllers. Each geographic area in a cellular network requires a base station. A broadcast and multicast standard developed for third-generation 3G cellular networks. Provides transmission of multimedia data from a single source to all subscribers in a specific area. Examples of multicast content could include video and movie clips, news, sports or stock quotes. Bluetooth supports both voice and data communications.
The standard for measuring the smallest unit of information in digital communications and data processing.
A component of a base station, the BSC supervises the functioning and control of multiple base transceiver stations and acts as a small switch. Includes the electronic equipment and the antenna that comprise a radio transceiver facility or single base station. An expenditure connected to acquiring or upgrading physical assets such as equipment, property or buildings. Carrier In wireless communications, an electromagnetic pulse, channel or radio wave transmitted at a steady base frequency. Used to transmit radio signals to a radio receiver.
Also, a term commonly used to refer to a wireless network operator or service provider that provides mobile telecommunications services. A digital wireless technology that converts analog information, such as speech, into digital information, which is then transmitted as a radio signal over a wireless network. CDMA uses spread-spectrum technology, decreasing potential interference while achieving privacy. CDMA technology is the basis for third generation 3G wireless technologies which offer increased voice capacity and provide higher data rates than 2G and 2. IS CDMA is a family of third generation 3G wireless standards that offers enhanced voice and data capacity and higher data rates than previous, second generation wireless standards.
CDMA is a direct evolution of the cdmaOne standard. CDMA 1X - a. It is the most efficient wireless technology for circuit-switched voice communications and it supports packet data speeds of up to Third Generation wireless technology that offers broadband data speeds to support applications such as VPN access, video downloads and large file transfers. Third Generation wireless technology that was proposed to support high-speed voice and data on the same channel to enable Internet connectivity for cellular phones, PDAs and other mobile devices.
This technology will not be commercialized. An add-on technology that enabled first-generation 1G analog systems to provide packet data. Cell The geographic area encompassing the signal range from one base station. Wireless networks are comprised of many overlapping cells to efficiently use radio spectrum for wireless transmissions. The cell site includes an antenna tower, transmission radios and radio controllers. The cell tower includes an antenna tower, transmission radios and radio controllers.
Cellular Analog or digital communications that provide a consumer with a wireless connection from the mobile device to a relatively nearby transmitter base station. Channel The amount of wireless spectrum occupied by a specific technology implementation. For cellular communications, there is a transmit side and a receive side. A dial-up modem is an example of a circuit-switched connection. Coverage Area Geographic area served by a cellular system in which service is available to wireless users. An integrated information management system that is used to plan, schedule and control the pre- and post-sales activities within an organization to improve customer tracking and communication.
Enterprises can wirelessly extend their CRM solutions, enabling sales professionals to remotely access timely customer data for increased productivity and improved customer service. Protects unclassified computer data using a bit, private key, symmetric cryptographic algorithm; issued as a Federal Information Processing Standard. Digital A form of transmission that transforms analog signals, such as voice, into a series of electrical or optical pulses that represent the binary digits 0 and 1.
This numerical data is then converted into various forms depending on the type of network, such as radio waves for wireless transmission, electronic pulses for a wired network or optical light waves for fiber optics. Digital networks offer superior Quality of Service QoS , secure transmission and more bandwidth than analog lines. B that increases the peak data rate on the reverse and forward links to Downlink - a. Forward Link The connection from the network to the end-user communications device. In satellite communications, also refers to the connection from a satellite to a terrestrial receiver.
Technology for copyright protection of digital media, including ringtones, music, graphics and video. Developed to prevent the illegal distribution of purchased content over the Internet. Dual Band Functionality that allows a mobile phone to transmit in two frequencies for wider coverage area. Dual Mode Functionality that allows a mobile phone to operate in two different modes for greater roaming capabilities.
A multicast technology standard specified by the DVB Project for the multicast delivery of TV-like programming to wireless devices.
With DVB-H, one signal is sent from the base station and received by all subscribing devices within range. E Enhanced Embedded In wireless communications, used to describe capabilities, such as Internet access, that are contained within a device. Encryption In security, encryption is the ciphering of data by applying an algorithm to plain text. Types include Asymmetric, Symmetric and Public Key. End-to-End Security In wireless communications, safeguarding information in a network by encryption to ensure secure data transmission from the point of origin to the point of destination.
A business management system that integrates all major facets of a business, such as manufacturing, finance, sales and human resources functions. ERP software links together various back-office computer systems, including SFA sales force automation and CRM customer relationship management applications. ERP software typically incorporates heavy use of telecommunications, including providing wireless access to these systems to enable real-time information requests.
EV-DO Third Generation wireless technology that offers broadband data speeds to support applications such as VPN access, video downloads and large file transfers. EV-DO Rev. A, Rev. A that increases the peak data rate on the reverse and forward links to 5. The Rev. B standard allows up to 15 carriers to be aggregated even if they are in non-adjacent or non-contiguous blocks of spectrum.
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When 15 channels are combined in 20 MHz bandwidth, Rev. B delivers peak data rates of up to 27 Mbps in the reverse link and A speech codec used in CDMA networks to improve speech quality with lower bit rates. Information technology solutions that help companies improve communication with employees in the field.
A technique used in radio transmission systems, such as wireless local area networks WLAN and select mobile networks. Firewall A combination of hardware and software that protects a computer or group of computers from access by an outside network or computer user. A firewall enforces a boundary between two or more networks.
Flash Memory A type of memory that can be erased and reprogrammed rewritten. Commonly used in mobile phones, digital cameras, audio players and removable memory cards, such as Memory Sticks or Secure Digital SD Cards. Forward Link - a. Downlink The connection from the network to the end-user communications device. FPS In video, frames per second. Frame Relay Uses a form of packet-switching and multiplexes data. A frame relay network is able to accommodate data packets of various sizes associated with virtually any native data protocol. An access standard defined by the ITU.
Frequency The rate at which an electromagnetic waveform alternates. Usually measured in hertz Hz or megahertz MHz. Gateway A network point that acts as an entrance to another network. GB Gigabyte. A measure of computer data storage capacity. Measured as approximately a billion bytes or 1,,, in decimal notation. GHz Gigahertz. A measure of frequency equal to a billion hertz or a thousand megahertz MHz.
Gigahertz is often used to measure UHF ultra-high frequency or to express microprocessor clock speed in some computers. Adds packet data to the existing voice network. A worldwide radio-navigation system developed by the U. Department of Defense to enable users to determine their exact location anywhere on the globe from land, air or sea. GPS works via radio signals sent from orbiting satellites to receivers on the ground.
GPS receivers are used in a wide range of commercial applications from fleet management to rural navigation. Enables location-based services for wireless devices that work in all types of terrains and dense metropolitan areas. Groupware A category of enterprise software that allows employees to work more collaboratively. Groupware includes email and PIM personal information management functionality such as calendar, to-do lists and contact information; and allows employees to share data. A second-generation wireless telecommunications standard for digital cellular services first deployed in Europe.
The interface that allows the user to interact with a particular device, such as a wireless phone or personal computer. Elements include pull-down menus, buttons, scroll bars, iconic images, windows and help wizards. Supports only the visual portion of the video stream; the audio portion is handled separately. Considered an option for transmitting full-motion video over wireless and Internet connections.
Handoff The process, invisible to the user, of transferring a cellular phone conversation from one base station cell tower to another without interruption to the call. There are two types of handoffs: hard and soft. Handset A wireless device that contains a transmitter and receiver. Also known as a cellphone or mobile phone.
Hard Handoff A handoff is the process, invisible to the user, of transferring a cellular phone conversation from one base station cell tower to another without interruption to the call. Hard handoffs require that the connection of a cellular phone call be broken in the original base station before the connection can be made in the next base station. A hard handoff may result in a dropped call. Hertz The international unit for measuring frequency, equivalent to cycles per second.
One megahertz MHz is one million mertz. One gigahertz GHz is one billion hertz. Hot Spot A location, such as a coffee shop, airport or bookstore, where a consumer can establish a WLAN wireless local area network or Wi-Fi connection. Hot spots provide a wireless access point for the user and limited coverage approximately feet , depending on the location. An enhancement to WCDMA networks that provides higher data speeds in the downlink to support applications such as VPN access, video downloads and large file transfers.
A proprietary technology from Motorola based on the TDMA standard that allows users to access phone calls, two-way radio transmissions, paging and data from one wireless device. A standards body responsible for developing computing and electronics standards. The IEEE developed IM Instant Messaging. Instant, real-time, text-based communication between two or more people over a network such as the Internet.
An open industry standard for voice and multimedia communications over packet-based IP networks. Internet Protocol - a. IP Internet Protocol. The method of sending data from one computer to another on the Internet. Also commonly used as an abbreviation for Intellectual Property. IP Datacasting Simultaneous transmission of content from a single source to a large number of wireless subscribers. Usually refers to the delivery of a wide variety of TV-like programming to wireless devices, and can also include IP-based content such as games or video and audio files. IPsec Internet Protocol Security.
A collection of protocols for secure exchange of packets at the Internet protocol IP layer. IPsec supports two encryption modes: Transport mode encrypts only the data portion of each packet; Tunnel mode encrypts the data portion and header of each packet. IS - a.
Mobile Generations Explained | Interference Technology
The basis of the core network for CDMA The interim standard for CDMA-based cellular networks. IS Interim Standard Chartered by the United Nations, ISO was formed to define and promote the development of various international standards. An agency of the United Nations with the goal of establishing telecommunication standards. Java programs are portable and can be run anywhere in a network that has a Java virtual machine JVM.
JPEG A standard file format for image compression, typically for photographic images. Commonly used to store and transmit photographs over the Internet.
Work and Life in the Mobile Society/Technology/Standards
The most common file extensions for this format are. KB Kilobyte. A measure of computer memory or storage. Measured as 1, bytes in decimal notation. Kbps Kilobits per second. Commonly used as a speed for data transmission. Measured as 1, bits per second. Kilohertz KHz One thousand hertz. A measurement often used to reference radio frequencies. A tunneling protocol that enables the operation of a virtual private network VPN over the Internet. A small communication network covering a limited area, such as within a building or group of buildings. Examples of LBS include regional map information for real estate agents and asset tracking solutions for service representatives at logistics and transportation companies.
A thin, flat display screen consisting of numerous color or monochrome pixels arranged in front of a light source. LCDs are used in many mobile and other battery-powered electronic devices because of relatively low energy requirements and easy readability. MB Megabyte.
A measure of computer processor storage and real and virtual memory. Measured as 1,, bytes in decimal notation. Enables one source to simultaneously send data, such as video or audio programming, to multiple users who subscribe to the service. However, the IWF assigns a temporary IP address for that session, which provides flexibility to the IS network infrastructure because it can incorporate any manufacturer's standard router into the IWF. Toggle navigation Menu. Home Dictionary Tags Enterprise. Interim Standard 95 IS Share this:. Related Terms. Related Articles.
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