The reality of video over wireless architecture

In just the last few years, video application usage has increased significantly and is comprising a greater portion of Internet traffic every day. Rich-media-hungry smartphones and tablets have flooded the marketplace
and more applications that drive video usage continue to arrive on the market.


Providing high-quality video over wireless poses challenges above and beyond sheer bandwidth requirements. For starters, video traffic has very low tolerance for packet loss in the transport network from video server to video client. High or variable latency can also cause issues for streaming video applications.
Wireless networks must take these factors into consideration during the design phase.Video over wireless becomes even more challenging in high density, high-usage scenarios such as classrooms or training
rooms where dozens of users may be simultaneously accessing a single video source. Worst-case scenarios must be considered when designing wireless networks that will be used for such applications.


A key to delivering high-quality video over wireless is sufficient bandwidth capacity of the wireless network and its ability to deliver high throughput in actual operation. Video operates at a constant bit rate so it becomes a math problem to determine the overall capacity required of the network based on maximum number of expected users and the bandwidth required by the highest rate applications. Video is frequently the highest bandwidth application expected on most networks.

To generate higher capacity , people always refer to multicast approach. With multicast video, a single video stream is sent from the source with users desiring to watch the stream subscribing to it. This reduces bandwidth consumption on the network since a separate stream does not need to be established and maintained between the video source and each individual station. This works well for wired networks; however in wireless, multicast packets are re-transmitted if packet loss is experienced a common occurrence in wireless. If a multicast video packet is corrupted, all wireless users subscribed to that video will experience degraded quality.

In fact, the wireless infrastructure still being considered immature in dealing with video streaming. Though we have MIMO wireless , but as the number of user increase, the capacity will gradually decrease.

Nexus Prime to beat Iphone 4S...really?

This week in the UK the Samsung Galaxy S II was awarded Phone of the Year by T3, and there the person accepting the award, UK Samsung Sales Director Andrew Glass, let loose the official name for the next Google hero phone: Nexus Prime. This normally wouldn’t be such a big deal for a smartphone, but when it comes to it being the platform of choice for google’s next big Android update Ice Cream Sandwich, we’ve just gotta know! So thusly there it is, Nexus Prime, and according the Glass again, we’ll be seeing it SOON.

Expected sometime inside the next two to three weeks, we’d originally expected to see this device today at CTIA in California. What happened instead was a delay reportedly due to the passing of legendary competitor Steve Jobs. In good taste it seems, Google and Samsung pushed the release date back a bit so as not to clash with the memorial services. Today we find that we DO get at least one detail on the upcoming superphone: a name. Here’s what Glass said, his words exactly:

“You will have an announcement of the Nexus Prime very shortly and will be seeing it in shops sooner than you think.” – Glass

Can you even bear the excitement welling up inside you? Your eyeballs will burst and your tongue will explode if you think about it too hard, settle down! Then proceed calmly to our big Nexus Portal for all the information you might need before the release. No worries!

One million Apple`s Lion download

Just within one day, 1one million copies has been downloaded for the new Apple OS X Lion. In addition to three other products, Apple released OS X Lion yesterday, an update to the Mac operating system that has be in the making since 2009. It seems that there were quite a few people waiting for the OS X release–apparently Lion was downloaded over 1 million times yesterday. That sets Mac OS X 10.7 as the fastest downloaded OS in Apple’s history.

Coincidentally, when Apple launched the Mac App Store back in January, it too received 1 million downloads in its first 24 hours. Lion was made available yesterday in the Mac App Store for $29.99, which was also a first for Apple since it used to offer a physical copy of the software available in its retail stores. However, customers had only one choice if they wanted Lion on the first day of its release, and that was the Mac App Store.

Apple is getting their torque while Microsoft is still looking for the suitable nut to tight the loose OS.

Sony Ericsson cool with Android

Mobile-phone maker Sony Ericsson unveiled two new Android models in a bid to grab more of the burgeoning smartphone market.

The company, a joint venture between L.M. Ericsson and Sony Corp, plans to launch the Xperia ray and Xperia active models during the third quarter, its chiefmarketing officer Steve Walker announced.

The new models should help the company expand its 11% market share of the Android segment, Walker said.

"Android smartphones is a rapidly growing part of the market, and we see our share within that market growing," Walker told The Associated Press.

London-based Sony Ericsson, which saw its phone unit sales drop 23% in the first quarter from a year earlier, is moving away from cheaper phone models and seeking to take on Apple Inc's iPhone, Research in Motion's Blackberry and Nokia Corp's N9 in the higher-priced smartphone segment.