service differentiation

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QoS Mechanisms for the MAC Protocol of 802.11 WLANs

There are two essential ingredients in order for any telecommunications system to be able to provide Quality-of-Service QoS guarantees: Connection Admission Control CAC and service differentiation. In Wireless Local Area Networks WLANs, it is essential to carry out these functions at the MAC level. The IEEE 802.11e draft standard includes...

Tags: 802.11 Wireless LAN, IEEE 802.11, QoS, MAC, Service Differentiation, Wireless LANs, LANs, Wi-Fi, Wireless, Networking

White papers 2006-05-28

Competitive and Considerate Congestion Control for Bulk-Data Transfers

The current Internet features traffic from diverse applications; ranging from delay-sensitive web browsing to delay-insensitive data file transfers. This motivates service differentiation, yet router-centric solutions. The current practice relies on a limited service differentiation at network edges. End-hosts often implement such emulators of low priority service to differentiate low and...

Tags: P2P File Sharing, Congestion, Service Differentiation, Peer To Peer (P2P), Internet

White papers 2006-02-01

Proportional Delay Differentiation in Wireless LAN

Providing service differentiation in wireless networks has attracted much attention in recent research. Existing studies so far have focused on the design of MAC layer protocols to achieve distributed priority scheduling. While these works have been shown to achieve certain differentiation higher throughput or lower delay for higher priority packets...

Tags: WLAN, Service Differentiation, LANs, Wi-Fi, Wireless, Wireless LANs, Networking

White papers

Admission Control and Service Differentiation Based QoS Provisioning for Mobile Ad Hoc Network

Service differentiation is the key to today's Internet QoS. However the assumption of static network topology and stability of links make the direct application of DiffServ in mobile ad hoc networks unfeasible. This paper presents admission control and service differentiation mechanism that works only in network layer and does not...

Tags: QoS, Admission, Mobile, Network, Routing Protocol, Service Differentiation, Advertising & Promotion, Networking, Marketing

White papers

Additional Resources

Gaping holes in RealPlayer patched

Digital media delivery firm RealNetworks has shipped a high-prority patch to cover four gaping holes in its flagship RealPlayer software, warning that the vulnerabilities could put users at risk of code execution attacks. The patch comes a few hours after Secunia released an advisory warning for one...

Tags: Vulnerability, RealNetworks Inc., RealNetworks RealPlayer, Digital Music, Digital Media, Security, Personal Technology, Consumer Electronics, Ryan Naraine

Blog posts 2008-07-25

What paper trail?

I've been carting around my latest sheaf of press releases about the green-ness of electronic document technology for weeks now. Yes, as I've blogged before, I am still one of those people who can't help printing out certain emails in order to act on them. Yes, it's bad, I know....

Tags: Xerox Corp., Paper Trail, Survey, Printers, Data Centers, Marketing Research, Hardware, Peripherals, Storage, Data Management, Marketing, Heather Clancy

Blog posts 2008-07-25

Diaz's Memo: Can cloud computing weather the storm?

ZDNet's Sam Diaz isn't ready to give up on cloud computing after Amazon's recent S3 storage service outage. He believes the technology still has the potential to drastically reduce operating expenses.

Tags: Diaz, Cloud Computing, Amazon

Videos 2008-07-25

Britain moves against illegal file sharing

CBC News out of Canada is reporting that British ISPs are making an aggressive move against illegal file sharing by implementing a program designed to discover copyright violators, who will be sent warning letters and may potentially have their internet connections disconnected. For more on the article,...

Tags: File-sharing, Peer To Peer (P2P), Internet Service Providers (ISPs), Internet, Nathan McFeters

Blog posts 2008-07-25

Cool Tools - Slingpage extends stickies and sharing to Firefox users

Slingpage, which announced its social browsing extension for Internet Explorer last month, will introduce an equally feature-rich version of its service to Mozilla Firefox users next week. Slingpage offers a way for Web surfers to find information about favorite topics via "Slingcast" feeds as well as create...

Tags: Monitor, Mozilla Firefox, Note, Tool, Slingpage, Web Browsers, Monitors & Displays, Internet, Hardware, Components, Jennifer Leggio

Blog posts 2008-07-25

How OpenDNS, PowerDNS and MaraDNS remained unaffected by the DNS cache poisoning vulnerability

The short answer is being paranoid about tackling a known vulnerability. It's 2001, and Daniel J. Bernstein DJB, author of the then popular djbdns security-aware DNS implementation, is applying basic math principles to raise awareness on what's to turn into the "sky is falling" critical Internet vulnerability in 2008, in...

Tags: DNS, Vulnerability, Anomaly, Attack, OpenDNS, MaraDNS, NSS, Domain Names, Networking, Internet, Dancho Danchev

Blog posts 2008-07-25

Microsoft may need an IBM moment of clarity

Microsoft's financial analyst meeting was a tale of a technology conglomerate: You heard a lot about search, a decent bit about the enterprise and all sorts of projects in between. But amid all the coverage--see Mary Jo's laundry list of stories--I can't help but wonder if Microsoft's...

Tags: Steve Ballmer, Microsoft Corp., Enterprise, IBM Corp., Game Players, Virtualization, Tools & Techniques, Enterprise Software, Consumer Electronics, Personal Technology, Hardware, Management, Software, Larry Dignan

Blog posts 2008-07-25

Netflix ups outlook; Customer acquisition costs fall

Netflix said Friday it ended the second quarter with more than 8.4 million subscribers, up 25 percent from a year ago, and spent less money acquiring those customers. Those two factors added up to better than expected quarterly results and an improved outlook. The company has been...

Tags: NetFlix Inc., Acquisition, Earnings, Financial Accounting, Mergers & Acquisitions, Finance, Investment, Larry Dignan

Blog posts 2008-07-25

Juniper: Enterprise demand strong; Johnson hired to scale up

Current Juniper CEO Scott Kriens delivered strong quarter results, said enterprise demand was solid and outlined the primary reason Kevin Johnson was hired as his replacement: He knows how to scale. Ahead of its earnings report statement Thursday Juniper made the Johnson news official. The company has...

Tags: Revenue, Juniper Networks Inc., Kevin Johnson, Operational Accounting, Finance, Larry Dignan

Blog posts 2008-07-24

Kaminsky suggests long-term fix will still have to be determined, but patch now, or pay soon

I listened to the Black Hat webcast today to grab as much info as I could on this subject. The biggest thing that I heard from the whole talk is that the patch fixes things to a reasonable point, but that long-term, there will have to be more work...

Tags: CERT, DNS Server, Server, Kaminsky, Dan, Patches, Domain Names, Security, Internet, Nathan McFeters

Blog posts 2008-07-24

Vista: Whose 'reality' do you believe?

Vista: Whose 'reality' do you believe?Microsoft Search sucks.Now they are hijacking your PC to gain search share. Vista, XP, and anything else Microsoft is leaving this organization at every chance.RE: Vista: Whose 'reality' do you believe?This studies almost alway fail to note that XP's business penetration was no better after...

Tags: Microsoft Windows Vista (Longhorn), Microsoft Windows Vista, Microsoft Corp., Forrest

Discussion threads 2008-07-24

Bausch

BauschInteresting pairing...and one that seems to make a little more sense than the traditional IT/Accounting duopoly you generally see in the enterprise. Consumer oriented businesses in this day and age should have consumer oriented systems in place. I think the change in attitude should provide immediate dividends. ...

Tags: Product marketing, Customer relationship management (CRM), Bausch

Discussion threads 2008-07-24

Speculation over possible Skype backdoor

There's growing speculation coming out of Europe that there's a backdoor in Skype that allows remote eavesdropping of telephone conversations. A report in the reputable Heise Online says the issue was discussed at a meeting with ISPs last month where high-ranking officials at the Austrian interior...

Tags: Skype Technologies S.A., Telecom & Utilities, Internet Service Providers (ISPs), Internet, Ryan Naraine

Blog posts 2008-07-24

Microsoft to get more 'Apple-like' in PC, phone space

Microsoft to get more 'Apple-like' in PC, phone spaceMicrosoft Store in the works...My rep told me Microsoft is looking into significant retail space in higher end upscale shopping malls. In the mock-up of the store, boxes of Vista and Office 2007 were kept under lock and key. Customers will be...

Tags: Desktops, Microsoft Corp., Apple Inc., PC phone, PC, phone

Discussion threads 2008-07-24

Forrester: Vista is 'New Coke' in the enterprise; Firefox, Apple gain a little

Forrester: Vista is 'New Coke' in the enterprise; Firefox, Apple gain a littleNew Coke?Actually, given the way it has been and is being sold, is it not the New Kool-Aid?With Vista selling so well already ...... as shown in revenues from the previous quarter, Microsoft can expect to gain substantially...

Tags: Microsoft Windows Vista (Longhorn), Operating systems, Mozilla Firefox, Forrester Research Inc., Microsoft Windows Vista, Apple Mac OS X, Mendel, Apple Inc.

Discussion threads 2008-07-24

Mossberg: MobileMe Is Far Too Flawed To Be Reliable

Mossberg: MobileMe Is Far Too Flawed To Be ReliableWow, you know it is bad when...You know it is bad when one of your most fervent fanboys tells you to stay away from an Apple service![i]The planned iDisk File Sharing featured was delayed[/i]More vaporware from Apple. Sounds like once again, they've...

Tags: Desktops, Groupware, MobileMe, Mossberg

Discussion threads 2008-07-24