There are 34 names in this directory beginning with the letter B.
In the U.S. cellular service industry, B-Band cellular refers to the regional Bell operating company's cellular subsidiary.
B-CDMA: broadband code division multiple
Broadband code division multiple access (B-CDMA) is designed to correct many of the inherent short-falls of IS-95 (narrowband CDMA) and other digital narrowband technologies. In addition, it is being designed as a long-term solution to both voice and data wireless needs — fixed and mobile. Some of the technical aspects of the B-CDMA air interface are related to its propagation characteristics.
In wireless technology, backhaul refers to transporting voice and data traffic from a cell site to the switch
Backscattering is radio wave propagation in which the direction of the incident and scattered waves, resolved along a reference direction (usually horizontal) are oppositely directed. A signal received by backscattering is often referred to as “backscatter.”
Band in telecommunication refers to the following definitions: 1. The range of frequencies between two defined limits which are used for a specific purpose. 2. One of the geopolitical boundaries established to define a WATS (wide-area telephone service) serving area.
Band Elimination Filter
Band Elimination Filter is an electrical device which blinds a receiving unit from recognizing a specific range of frequencies.
Band Pass Filter
Band Pass Filter is a radio wave filter with a specific range of frequencies in which it is designed to pass, while rejects frequencies outside the pass-band. Resistor-inductor-capacitor circuit is an example of Band Pass Filter.
Bandwidth is the portion of the frequency spectrum required to transmit desired information. Each radio channel has a center frequency and additional frequencies above and below this carrier frequency which is used to carry the transmitted information. The range of frequencies from the lowest to the highest used is called the bandwidth.
Baseband is the transmission of a digital or analog signal signaling at its original frequencies and in its original form. It should not be changed by modulation.
Baseband layer, also known as baseband packet, is a physical layer protocol in the Bluetooth protocol stack. The Baseband in the Bluetooth manages physical channels and links apart from other services like error correction, data whitening, hop selection and Bluetooth security. The Baseband layer lies on top of the Bluetooth radio layer in the bluetooth stack. The baseband protocol is implemented as a Link Controller, which works with the link manager for carrying out link level routines like link connection and power control. The baseband also manages asynchronous and synchronous links, handles packets and does paging and inquiry to access and inquire Bluetooth devices in the area.
Baseband signal is a signal with frequency content centered around DC. Typically it is the modulating signal for an RF carrier.
BCCH: Broadcast Control Channel
Broadcast Control Channel (BCCH) is a downlink-point-to-multipoint logical channel in GSM and cdma2000 systems used to send identification and organization information about common control channels and cell services.
BCH code:Bose-Chaudhuri-Hocquenghem Code
Bose-Chaudhuri-Hocquenghem (BCH) Code is a family of powerful cyclic block forward error correction codes used in the transmission of data.
BCH: Broadcast Channels
Broadcast Channels (BCH) are a group downlink point to multipoint logical channels used by mobiles to synchronize to and receive information necessary to access a cell in GSM, cdma2000, and WCDMA systems.
BE Service: Best Effort Service
Best Effort (BE) Service is one of the five QOS service types defined in the IEEE 802.16 WiMAX. The 802.16 protocol supports five types of QoS: UGS (Unsolicited grant service), rtPS (Real time polling Service), ertPS (Extended Real-time POLLING SERVICE), nrtPS (Non-real-time polling service and BE (Best effort service). The aim of the Best Effort (BE) service is to provide efficient service to best effort traffic.
Bent pipe technology
Bent pipe technology is a satellite technology to transmit calls from one point on Earth to a satellite and back down to another point.
BGCF: Breakout Gateway Control Function
Breakout Gateway Control Function (BGCF), a component in the IP Multimedia Subsystem (IMS), controls call transfers to and from the public switched telephone network (PSTN).
BlackBerry is a two-way wireless device, made by Waterloo, that allows users to check e-mail and voice mail (translated into text), as well as to page other users via a wireless network service. Also known as a RIM device, it has a miniature qwerty keyboard for users to type their messages. It uses the SMS protocol. BlackBerry users must subscribe to a wireless service that allows for data transmission.
BLER: Block Error Rate
Block Error Rate (BLER) is a ratio of the number of erroneous blocks to the total number of blocks received on a digital circuit. Block error rate (BLER) is used for W-CDMA performance requirements tests (demodulation tests in multipath conditions, etc). BLER is measured after channel de-interleaving and decoding by evaluating the Cyclic Redundancy Check (CRC) on each transport block.
Block code is a family of codes having a one-to-one mapping between k-symbol source words and n-symbol code words.
Bluesnarfing is the theft of information from a wireless device through a Bluetooth connection.
Bluetooth, defined in IEEE 802.15, is for wireless personal area networks (WPANs), which has characters such as short-range, low power, low cost, small networks and communication of devices within a Personal Operating Space. Bluetooth is for wireless transmission between a wide variety of devices such as PCs, cordless phone, headsets and PDAs within 10-meter range.
BREW: Binary Runtime Environment for Wir
Binary Runtime Environment for Wireless (BREW) is an open system created by Qualcomm for delivering over-the-air applications and data. The hottest use for BREW to date has been downloadable games
Broadband refers to telecommunication that provides multiple channels of data over a single communications medium, typically using some form of frequency or wave division multiplexing.
Broadband PCS Broadband PCS
Broadband PCS is the personal communications services created in the A- through F-Block auctions and used for voice and data. Mobile broadband PCS services include both voice and advanced two-way data capabilities that are generally available on small, mobile multifunction devices.
Broadband Wireless Access
Broadband wireless access is a technology aimed at providing wireless access to data networks, with high data rates. According to 802.16-2004 standard, broadband means “having instantaneous bandwidth greater than around 1 MHz and supporting data rates greater than about 1.5 Mbit/s”. From the point of view of connectivity, broadband wireless access is equivalent to broadband wired access, such as ADSL or cable modems. It is planned to be used in the next few years and is thought to be used up to 40 miles away.
BS: Base Station
Base station (BS), also called cell site, is the local cellular tower and radio antenna (including the radios, controller, switch interconnect, etc.) that handles communication with mobile users in a particular area or cell. A cellular network is made up of many cell sites or base stations, all connected back to the switch via landline or microwave.
BSIC: Base Station Identity Code
Base Station Identity Code (BSIC) is a unique code contained in messages on the broadcast channels of a cell or base station that uniquely identifies the base station.
BSS: Base Station Subsystem
The Base Station Subsystem (BSS) is the section of a GSM network which is responsible for handling traffic and signalling between a mobile phone and the Network Switching Subsystem. The BSS carries out transcoding of speech channels, allocation of radio channels to mobile phones, paging, quality management of transmission and reception over the Air Interface and many other tasks related to the radio network.
BSSID: Basic Service Set Identifier
BSSID refers to the MAC address of the Station (STA) in an Access Point (AP) in an infrastructure mode BSS defined by the IEEE 802.11-1999 Wireless Lan specification. This field uniquely identifies each BSS. In an IBSS, the BSSID is a locally administered IEEE MAC address generated from a 46-bit random number. The individual/group bit of the address is set to 0. The universal/local bit of the address is set to 1.
BT: Bandwidth Time Product
Bandwidth Time Product(BT) is the result obtained by multiplying the system bandwidth by the signal duration. As a general rule, the system bandwidth must be approximately equal to the reciprocal of the signal duration to produce an output signal of the same general form as the input, i.e., BT»1.
BTA: Basic Trading Area
Basic Trading Area (BTA) refers to the area or “footprint” in which an entity is licensed to transmit their frequencies. BTAs were established by Rand McNally and are defined as county lines. Rand McNally licensed their mapping data to the FCC for ease of designation for site licenses. BTAs are about the size of a cellular MSA and cross state lines in some instances. BTAs are grouped into larger areas called MTAs.
BTC: Block Turbo Code Block Turbo Code
(BTC) is a type of turbo codes. BTC is a product code obtained from the concatenation of either two extended or two expurgated Bose-Chaudhuri-Hocquenghem (BCH) codes. Block Turbo-codes (BTC) are promising forward error correction (FEC) codes providing close-to-optimal coding gain for rather high coding rate (R > 0.7) and less subject to an error floor than Convolution Turbo Codes (CTC).