Classification of access network types: Ethernet, wireless LAN, ADSL, cable modem or dialup?

2008 ◽  
Vol 52 (17) ◽  
pp. 3205-3217 ◽  
Author(s):  
Wei Wei ◽  
Bing Wang ◽  
Chun Zhang ◽  
Jim Kurose ◽  
Don Towsley
Keyword(s):  
Wireless Lan ◽  
Access Network ◽  
Cable Modem

Software-Based Validation of the Differentiation Scheme for Ethernet and Wireless LAN Access Network Types Using an End-to-End Approach

2020 ◽  
Vol 9 (2) ◽  
pp. 51-60
Author(s):  
Pritee Parwekar ◽  
Adilya Bakambekova ◽  
Talgat Bizhigit ◽  
Yeldar Toleubay
Keyword(s):  
Wireless Lan ◽  
Classification Scheme ◽  
Access Network ◽  
Small Scale ◽  
Arrival Times ◽  
Probe Size ◽  
End To End ◽  
Scale Experiment ◽  
Ethernet Connection

Different access network types are characterized by a variety of attributes which include link bandwidths, physical media, capacity, and reliability. Therefore, the question of accurately identifying whether the sender uses a wired ethernet connection or a wireless LAN connection comes into place. This article aims to analyse, simulate, validate, and improve the existing classification scheme which is based on measuring entropy of packet pair inter-arrival times and median. A riverbed modeller (former OPNET) is used for simulating the different scenarios. Small-scale experiment conducted on campus at the Nazarbayev University (NU) validates the insignificance of the packet probe size chosen for the classification.

Wireless LAN access network architecture for mobile operators

2001 ◽  
Vol 39 (11) ◽  
pp. 82-89 ◽  
Author(s):  
J. Ala-Laurila ◽  
J. Mikkonen ◽  
J. Rinnemaa
Keyword(s):  
Network Architecture ◽  
Wireless Lan ◽  
Access Network

Analysis of Bandwidth Efficiency in IEEE 802.11 and 802.16 Interworking Networks

2018 ◽  
Vol 7 (1) ◽  
pp. 25-38
Author(s):  
Mateen Yaqoob ◽  
Mustafa Shakir
Keyword(s):  
Ieee 802.11 ◽  
Wireless Lan ◽  
High Speed ◽  
Access Network ◽  
Bandwidth Efficiency ◽  
Broadband Access ◽  
End User ◽  
Coverage Area ◽  
High Coverage ◽  
Limited Coverage

With the advances in wireless technology during the past years, continued and reliable connectivity has been also ensured through broadband access network. A present day wireless network which provides affordable speed to end user requirements is wireless LAN (IEEE 802.11 standard), which is commercially known as wireless fidelity (Wi-Fi). One of its shortcomings is limited coverage area and thus, there is a need for wireless networks which can provide high speed with maximum coverage. WiMAX overcomes this need for broadband access with a high coverage area. But the installation cost of WiMAX is considerably high as compared to WLAN. So, the interworking of these two networks will ensure high speed broadband access at all times, a considerable coverage area, and reduced cost. However, interworking of these two networks allows the accommodation of the maximum number of subscribers. Bandwidth efficiency provides insight information of how the frequency spectrum is effectively utilized.

Note on the spectral classification of carbon stars in the photographic infrared region

1966 ◽  
Vol 24 ◽  
pp. 21-23
Author(s):  
Y. Fujita
Keyword(s):  
Infrared Region ◽  
Spectral Classification ◽  
Carbon Stars

We have investigated the spectrograms (dispersion: 8Å/mm) in the photographic infrared region fromλ7500 toλ9000 of some carbon stars obtained by the coudé spectrograph of the 74-inch reflector attached to the Okayama Astrophysical Observatory. The names of the stars investigated are listed in Table 1.

Diagnostic Value of Electron Microscopy in Soft Tissue Tumors

1970 ◽  
Vol 28 ◽  
pp. 220-221
Author(s):  
Gerald Fine ◽  
Azorides R. Morales
Keyword(s):  
Cardiac Myxoma ◽  
Osteogenic Sarcoma ◽  
Diagnostic Value ◽  
Soft Tissue Tumors ◽  
Amelanotic Melanoma ◽  
Growth Patterns ◽  
Light Microscopic Level ◽  
Mesenchymal Tumors ◽  
Good Agreement

For years the separation of carcinoma and sarcoma and the subclassification of sarcomas has been based on the appearance of the tumor cells and their microscopic growth pattern and information derived from certain histochemical and special stains. Although this method of study has produced good agreement among pathologists in the separation of carcinoma from sarcoma, it has given less uniform results in the subclassification of sarcomas. There remain examples of neoplasms of different histogenesis, the classification of which is questionable because of similar cytologic and growth patterns at the light microscopic level; i.e. amelanotic melanoma versus carcinoma and occasionally sarcoma, sarcomas with an epithelial pattern of growth simulating carcinoma, histologically similar mesenchymal tumors of different histogenesis (histiocytoma versus rhabdomyosarcoma, lytic osteogenic sarcoma versus rhabdomyosarcoma), and myxomatous mesenchymal tumors of diverse histogenesis (myxoid rhabdo and liposarcomas, cardiac myxoma, myxoid neurofibroma, etc.)

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