Chapter 4 Transmission Media
... Twisted Pair - Applications • Most common medium • Telephone network —Between house and local exchange (subscriber loop) ...
... Twisted Pair - Applications • Most common medium • Telephone network —Between house and local exchange (subscriber loop) ...
phys - Home - KSU Faculty Member websites
... (electrical, optical, radio) is established from the caller phone to the callee phone. This happens BEFORE any data is sent. • Message Switching: The connection is determined only when there is actual data (a message) ready to be sent. The whole message is re-collected at each switch and then forwar ...
... (electrical, optical, radio) is established from the caller phone to the callee phone. This happens BEFORE any data is sent. • Message Switching: The connection is determined only when there is actual data (a message) ready to be sent. The whole message is re-collected at each switch and then forwar ...
ATM
... be used in the future for layer management message indication. • Length: Length of the user information without the Pad (65535).216 1 • CRC: CRC-32. Used to allow identification of corrupted transmission. ...
... be used in the future for layer management message indication. • Length: Length of the user information without the Pad (65535).216 1 • CRC: CRC-32. Used to allow identification of corrupted transmission. ...
The network convergence: A Reality?
... UMA phone set up a WIFI connection with the Home Zone Box. It switches into UMA mode (icon appears on the phone). 1. Outside the Home Zone, the end user makes phone calls through the GSM network. ...
... UMA phone set up a WIFI connection with the Home Zone Box. It switches into UMA mode (icon appears on the phone). 1. Outside the Home Zone, the end user makes phone calls through the GSM network. ...
Chapter 11
... Small cells reduce queuing delay for high priority cells Small cells can be switched more efficiently Easier to implement switching of small cells in ...
... Small cells reduce queuing delay for high priority cells Small cells can be switched more efficiently Easier to implement switching of small cells in ...
William Stallings Data and Computer Communications
... Small cells reduce queuing delay for high priority cells Small cells can be switched more efficiently Easier to implement switching of small cells in ...
... Small cells reduce queuing delay for high priority cells Small cells can be switched more efficiently Easier to implement switching of small cells in ...
End-user PTT services offered by PTTSystems Ltd.
... mobile phones and transmitting voice in data packets, with all of the associated advantages. With the proliferation of cellular phones, services utilizing CB or UHF transceivers have expressed a need for a unified solution that can provide the functionality of both using a single device, using the p ...
... mobile phones and transmitting voice in data packets, with all of the associated advantages. With the proliferation of cellular phones, services utilizing CB or UHF transceivers have expressed a need for a unified solution that can provide the functionality of both using a single device, using the p ...
Document
... MAC sublayer common part is where the main protocol resides, handles channel allocation, controlled by the base station, connection oriented. The convergence sublayer handles interoperation with IP or ATM network. ...
... MAC sublayer common part is where the main protocol resides, handles channel allocation, controlled by the base station, connection oriented. The convergence sublayer handles interoperation with IP or ATM network. ...
Tesla - Nick Giannaris
... • Network asks MS to measure the BS signals then the network performs handoff Inter-Base Station handoff • MS will issue handoff request by using a free channel Inter-System Handoff • New & old BS are connected to two different MSCs • New MSC will select BS and verify RF link quality • MS moves back ...
... • Network asks MS to measure the BS signals then the network performs handoff Inter-Base Station handoff • MS will issue handoff request by using a free channel Inter-System Handoff • New & old BS are connected to two different MSCs • New MSC will select BS and verify RF link quality • MS moves back ...
802.11 frame - Department of Computer and Information Science
... All use CSMA/CA for multiple access All have base-station and ad-hoc network versions ...
... All use CSMA/CA for multiple access All have base-station and ad-hoc network versions ...
Chapter 5: Telecommunications
... • Fiber Optic – Uses pulses of light to send data – Glass or plastic core surrounded by cladding with a tough outer sheath ...
... • Fiber Optic – Uses pulses of light to send data – Glass or plastic core surrounded by cladding with a tough outer sheath ...
COMBO Introduction
... Openness and flexibility of COMBO solutions for network operators and service providers COMBO targets an open solution enabling interoperability of different carriers and fair sharing of resources: •Establish performance (e.g. QoS) and traffic management for fair sharing of total available resource ...
... Openness and flexibility of COMBO solutions for network operators and service providers COMBO targets an open solution enabling interoperability of different carriers and fair sharing of resources: •Establish performance (e.g. QoS) and traffic management for fair sharing of total available resource ...
Communication and Network - International University of Japan
... Optical fiber cable uses light pulse sent by a laser device thought the strands of glass. Thin coating “cladding” prevents the light from leaking out of the fiber. Super-fast and in turn expensive. Used for backbone (telephone) network. ...
... Optical fiber cable uses light pulse sent by a laser device thought the strands of glass. Thin coating “cladding” prevents the light from leaking out of the fiber. Super-fast and in turn expensive. Used for backbone (telephone) network. ...
Wireless Network
... While 1st generation systems were primarily designed for voice, second generation networks provide paging, facsimile and high –data rate network access Handoff is mobile-controlled-MAHO(Mobile assisted Handoff) The mobile units in this generation perform functions like received power reporting, adja ...
... While 1st generation systems were primarily designed for voice, second generation networks provide paging, facsimile and high –data rate network access Handoff is mobile-controlled-MAHO(Mobile assisted Handoff) The mobile units in this generation perform functions like received power reporting, adja ...
1998-11-19-MIEM-WirelessWANs
... Plugged bridge and fileserver into the same Ethernet hub Had to “bind” a common network address to the wireless network We used the IPX network number “314159” - in other words “the Pi in the sky” Could also have done it as one big network with everyone on it - but why? From this point on, the netwo ...
... Plugged bridge and fileserver into the same Ethernet hub Had to “bind” a common network address to the wireless network We used the IPX network number “314159” - in other words “the Pi in the sky” Could also have done it as one big network with everyone on it - but why? From this point on, the netwo ...
Chapter 4 Transmission Media
... • Power output in particular direction compared with that produced by isotropic antenna • Measured in decibels (dB) • Gain could be +ve or -ve ...
... • Power output in particular direction compared with that produced by isotropic antenna • Measured in decibels (dB) • Gain could be +ve or -ve ...
Basic Concepts
... When a packet arrives at a switch, the switch must decide which of several ports (connections) to use to send the packet back out Complex B Made at each switch B? D? Switch A D Packet ...
... When a packet arrives at a switch, the switch must decide which of several ports (connections) to use to send the packet back out Complex B Made at each switch B? D? Switch A D Packet ...
Glossary of Common Terminology and Acronyms
... convey information from a sender (or transmitter) to a receiver. There are two types of channel communications: Simplex communication is a name for a type of communication circuit. There are two (contradictory) definitions that have been used for the term. In both cases, the other definition is refe ...
... convey information from a sender (or transmitter) to a receiver. There are two types of channel communications: Simplex communication is a name for a type of communication circuit. There are two (contradictory) definitions that have been used for the term. In both cases, the other definition is refe ...
BDTIC
... Individual cell voltage must be monitored to allow cell balancing. When the cell-to-cell voltage variation is greater than a specific value, the cell balancing circuitry is enabled that gradually matches the voltages of the individual cells. As stated above, the MOSFET along with a series resistance ...
... Individual cell voltage must be monitored to allow cell balancing. When the cell-to-cell voltage variation is greater than a specific value, the cell balancing circuitry is enabled that gradually matches the voltages of the individual cells. As stated above, the MOSFET along with a series resistance ...
Slide 1
... Both the network entities and the smart devices will be able to configure themselves so that they can adapt to new requirements. The emergence of fourth generation of mobile services will allow Users to connect to different networks depending on their location. For example, a handset could connect a ...
... Both the network entities and the smart devices will be able to configure themselves so that they can adapt to new requirements. The emergence of fourth generation of mobile services will allow Users to connect to different networks depending on their location. For example, a handset could connect a ...
XIX
... D..distance between clusters (= distance between cells with identical fr), K..#of cluster cells, eg: K=7; o function: radio propagation, traffic handling capacity – calculate probability how many calls are processed in an area;; o increase capacity: adding new channels (new fr), fr.borrowing, ...
... D..distance between clusters (= distance between cells with identical fr), K..#of cluster cells, eg: K=7; o function: radio propagation, traffic handling capacity – calculate probability how many calls are processed in an area;; o increase capacity: adding new channels (new fr), fr.borrowing, ...
EIE Building - Department of LD
... PON(Passive Optical Network which offers FTTH, FTTC, FTTCab, FTTP Services), MSAN(Multi Service Access Node), Cable Modem and SONET. Know and Know Multiplexing and Multiple Access Technologies such as FDMA, TDMA and CDMA. Know Telephone set and subscriber loop interfaces, basic function of the telep ...
... PON(Passive Optical Network which offers FTTH, FTTC, FTTCab, FTTP Services), MSAN(Multi Service Access Node), Cable Modem and SONET. Know and Know Multiplexing and Multiple Access Technologies such as FDMA, TDMA and CDMA. Know Telephone set and subscriber loop interfaces, basic function of the telep ...
Cellular network
A cellular network or mobile network is a communications network where the last link is wireless. The network is distributed over land areas called cells, each served by at least one fixed-location transceiver, known as a cell site or base station. In a cellular network, each cell uses a different set of frequencies from neighboring cells, to avoid interference and provide guaranteed bandwidth within each cell.When joined together these cells provide radio coverage over a wide geographic area. This enables a large number of portable transceivers (e.g., mobile phones, pagers, etc.) to communicate with each other and with fixed transceivers and telephones anywhere in the network, via base stations, even if some of the transceivers are moving through more than one cell during transmission.Cellular networks offer a number of desirable features: More capacity than a single large transmitter, since the same frequency can be used for multiple links as long as they are in different cells Mobile devices use less power than with a single transmitter or satellite since the cell towers are closer Larger coverage area than a single terrestrial transmitter, since additional cell towers can be added indefinitely and are not limited by the horizonMajor telecommunications providers have deployed voice and data cellular networks over most of the inhabited land area of the Earth. This allows mobile phones and mobile computing devices to be connected to the public switched telephone network and public Internet. Private cellular networks can be used for research or for large organizations and fleets, such as dispatch for local public safety agencies or a taxicab company.