8.2 Interim Agreements on Key Issue #2: QoS
... 1a. Reflective QoS indication is signalled via inband or not signalled at all by the network. How to indicate
reflective QoS to the UE is decided by the network during the PDU session establishment procedure. When
reflective QoS is not signalled, all uplink flows use reflective QoS if there are corr ...
... Self phase modulation - Mitigation strategies in DWDM systems
TCOM 507 Class 2
... there is no call setup delay which makes them most suited for interactive data
applications or high traffic volumes . As such PAMA is used typically to
connect high data traffic sites within an organization. SCPC (Single
Channel Per Carrier) refers to the usage of a single satellite carrier for carr ...
Chapter 7 - SaigonTech
... 2.2.3. Ethernet Error Handling
• Collisions are the only type of error for which
Ethernet automatically attempts to resend the data
• Errors can occur when data is altered in medium
– Usually caused by noise or faulty media connections
– When the destination computer receives a frame,
the CRC is re ...
Network Reference Model for cdma2000 Spread Spectrum
... The DF is an entity that is responsible for delivering intercepted communications to one
or more collection functions.
The DFs typically include:
• the ability to accept call contents for each intercept subject over one or more
channels from each Access function.
• the ability to deliver call conten ...
... • RFID tags (continued)
– Basic types of tags
• Passive tags (most common type)
– They are small, can be produced in large quantities
at low cost, and do not require battery power
– Use the electromagnetic energy in the RF waves
• Active tags
– Equipped with a battery
– Can transmit the signal farth ...
3GPP TSG-SA2 Meeting #30
... WLAN black box. Some of them are stable requirements; others are more points for
consideration as it is currently unclear what the decision and consequent requirement will
The objective of this document is to bring these together in one document, point out that
there is a need for further work t ...
Serial Data Transmission
... Both criteria are influenced by the electric line parameters and the influence
increases with the length of the line as well as with the number of participants
connected. As a result, each cable type is limited in its line length and maximum number of participants.
The higher the signal frequency, t ...
Adding Location-Based Services to Existing Architectures
... As described in Examples 1 and 2, the user’s LBS application will
be sent information detailing the “location estimate” of a particular
mobile subscriber. The information received will include
“geographical information,” as described in [3GPP TS 09.02].
“Geographical information” gives the location ...
Oracle Communications ASAP Product Overview
... Executive Overview
Today’s communications industry is characterized by intense competition, limited resources,
and continuously shrinking margins. To be successful in this environment, service providers
must be first to market with new, differentiated services; offer instant activation of those
... security and privacy are more difficult.
it is best used for cable television.
even a radio can pick up the digital signal.
Both a and c
- IEEE Mentor
... black box. Some of them are stable requirements; others are more points for consideration as it is
currently unclear what the decision and consequent requirement will be.
The objective of this document is to bring these together in one document, point out that there is a
need for further work to cla ...
appendix a: wlan-related terminology - University of Houston
... 5) WEP Key Vulnerability: WEP key based encryption was included to provide same
level of data confidentiality in wireless networks as exists in typical wired
networks. However a lot of concerns were raised later regarding the usefulness of
WEP. Some of them are as following:
a. Manual Key Managemen ...
802.11ag The - Silex Technology
... by the receiver) is a function of the transmission environment and does not depend
significantly on the transmission frequency. Further, multipath effects are addressed
by OFDM, the modulation scheme of choice for both 802.11a and 802.11g. Significant
differences in multipath performance thus depend ...
Md. Zahirul Islam
... beacon LED or FM transmitter on the mobile terminal. These systems are proposed to provide 155
Mb/s ATM access to mobile terminals in a room . Electronic tracking systems have also been
proposed which exploit a diffuse optical channel to aid acquisition. The advantage of this topology
is that it is ...
Wireless and IP Communications Technician (CCC
... with challenging academic standards and relevant technical knowledge and skills needed to
prepare for further education and careers in the Manufacturing career cluster; provides technical
skill proficiency, and includes competency-based applied learning that contributes to the
academic knowledge, hi ...
cs2302 computer networks
... campus. Currently LAN size is limited to a few kilometers. It may be from two PC‟s to
throughout a company.
The most common LAN topologies are bus, ring and star. They have data rates from 4 to
16 Mbps. Today the speed is on increasing and can reach 100 mbps.
2. Metropolitan Area Network:
They are d ...
Trust, Privacy, and Security - Computer Science
... Slides based on publisher’s slides for 1st and 2nd edition of:
Introduction to Wireless and Mobile Systems by Agrawal & Zeng
© 2003, 2006, Dharma P. Agrawal and Qing-An Zeng. All rights reserved.
Some original slides were modified by L. Lilien, who strived to make such modifications
clearly visible. ...
Lecture-02: Signals fundamentals
... • For digital data, to what extent do
impairments limit data rate?
• Channel Capacity – the maximum rate at
which data can be transmitted over a given
communication path, or channel, under given
... • ISDN - (2) 64kbps channels - aggregate 128kbs - and higher
by combining ISDN lines (video conferencing)
• X.25 -The ITT standard for connecting terminal equipment
to packet switching data circuits. Max effective speed 2mbps
• FRAME RELAY - can offers users transmission speeds of
2.048 megabits per ...
PDF Download(PDF Type,777kbytes)
... consumption, since Optical-Electrical-Optical (O-E-O) conversion in the access central office is not needed.
EλAN employs a digital coherent*6 OFDM system with adaptive modulation, a technique that can realize
dramatically high optical frequency utilization efficiency and large-scale flexible servic ...
... for uplink wireless transmission in
future mobile communication
systems where transmitter power
efficiency is of paramount
4G, short for fourth generation, is the fourth generation of mobile telecommunications technology, succeeding 3G and preceding 5G. A 4G system, in addition to the usual voice and other services of 3G, provides mobile broadband Internet access, and over some networks voice services (known as VoLTE). Potential and current applications include amended mobile web access, IP telephony, gaming services, high-definition mobile TV, video conferencing, 3D television, and cloud computing.Two 4G candidate systems are commercially deployed: the Mobile WiMAX standard (first used in South Korea in 2007), and the first-release Long Term Evolution (LTE) standard (in Oslo, Norway and Stockholm, Sweden since 2009). It has however been debated if these first-release versions should be considered to be 4G or not, as discussed in the technical definition section below.In the United States, Sprint (previously Clearwire) has deployed Mobile WiMAX networks since 2008, while MetroPCS became the first operator to offer LTE service in 2010. USB wireless modems were among the first devices able to access these networks, with WiMAX smartphones becoming available during 2010, and LTE smartphones arriving in 2011. 3G and 4G equipment made for other continents are not always compatible because of different frequency bands. Mobile WiMAX is not available for the European market as of April 2012.