无线网络覆盖在大型场馆的“前世今生”

标签:全球CIO博客

访客:30092  发表于:2012-05-31 10:26:27

过去十年,手机网络和移动设备发生了翻天覆地的变化,这让无线网络系统和硬件供应商不得不寻求突破,在通信大量使用的区域甚至是在太空中提供更好的通信服务。我有幸参观了2003年AT&T制造的分散式天线系统(DAS)和安装在Boston TD花园球场的一台崭新的DAS,新系统配有LTE功能。

这个周早些时候,我有幸被AT&T邀请参观安装在Boston TD花园球场的一台崭新的配备LTE功能的DAS。Boston TD花园是棕熊队和凯尔特人队的主场,在此场馆每年都举办很多演唱会和其它重大赛事。

让我印象深刻的一幕是我见到了曾经为TD花园球场提供通信支持的老一代DAS。老一代DAS是一个布满灰尘的小盒子,而新一代DAS要一个屋子才能装下。老一代的DAS包括一些小盒子,电线,天线和一些我都叫不出名字的电子设备。

AT&T的技术人员告诉我:

“老一代的DAS大约在2003年建成,它可以提供类似现在DAS的通信支持,但是远远没有新一代的性能高。老一代的DAS当时可以满足人们的通话需求,不过随着人们的通讯需求增大,构建新的DAS势在必行。”

无线网络覆盖正在经历一场巨变。

然而AT&T并不是唯一一家为场馆构建DAS系统的供应商。Metlife场馆,也就是Cowboys的主场,的CTO Peter Brickman介绍到,他们场馆正由主要的美国供应商建造更大的DAS系统。

Just as cellular networks and mobile devices have drastically changed during the last ten years, so to have the systems and hardware wireless carriers use to bolster their cellular networks in high-traffic areas and event spaces. Here's a look at an AT&T Distributed Antenna System (DAS) from 2003 and a brand new, LTE-capable DAS in Boston's TD Garden.

Earlier this week, AT&T gave me a great tour of its brand new LTE-capable Distributed Antenna System (DAS) in Boston's TD Garden, home of the Bruins and Celtics and the site of countless concerts and other events every year.

One of my favorite parts of the tour was seeing the old DAS that used to boost AT&T coverage in the Garden. (See image above.) The old DAS is a single, dusty box. The new DAS can't even fit in one room; it consists of a pile of boxes, wires, antennas and other electronics that I won't even pretend to be able to identify. Check out the video below for a look at the new DAS.

From AT&T rep Seth Bloom:

"This older DAS was built around 2003 and it provided similar coverage, but with much lower capacity (and, of course, without LTE)…At its initial launch, voice calls were able to be accommodated, but more recently the DAS was no longer able to support the customer demand for data, which led to the investments you saw earlier this week."

The times, they sure are a-changin'.

And AT&T isn't the only carrier building these DAS systems in stadiums. According to MetLife Stadium CTO Peter Brickman, Cowboys Stadium, where the NFL's Cowboys play, has an even larger DAS that all major U.S. carriers are already connected to.


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