Posts Tagged ‘Backhaul’

Candidates for the Backhaul: PBB-TE vs T-MPLS

March 8, 2010 Comments off

Logo Candidates for the backhaul

1. Backhaul looks for candidates

As it was discussed in this article, 4G backhaul needs upgrades. The fourth generation and the increase of bandwidth requirements are the guilty ones. Telecom operators know that it is time to upgrade their mobile backhaul, in order to prepare it for the next generation services and their demands. Wireless incoming technologies, such as WiMAX and LTE (analysis here), are going to be too much for the present backhaul.

Without a proper backhaul optimization, neither your backbone nor your access can stay current. An old fashioned backhaul will be a gigantic bottleneck. Carriers are aware of this fact so they are managing some options to upgrade their Networks.

Which technologies could help carriers to deal with this problem? Lets see a little description of some possible candidates.

2. Candidate 1: Provider Transport Backbone (PBT)

Provider Transport Backbone, also known as PBB-TE (Traffic Engineered Provider Backbone Bridging), is a standard of the IEEE and the ITU-T (802.1 Ethernet working group 802.1Qay).

The objective of PBB-TE is to provide carrier class features over Ethernet networks. The standard implements some of the features of SDH/MPLS into Ethernet. In few words, it can be defined as a “connection oriented packet network“.

General characteristics of SDH, MPLS, PBB-TE

General characteristics of SDH, MPLS, PBB-TE

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Analysis: 4G Backhaul, accept the challenge

February 22, 2010 10 comments

4GBackhaul Analysis

1. What is happening with the backhaul?

Numerous statistics and forecasts at Internet show that the use of data services on the mobile phone is growing up very fast. Several factors have helped this growing:

  1. The increase of smartphones sales in the last 3 years.
  2. The better performance of 3G-3’5G in comparison with GPRS in terms of download & upload speed.
  3. The user trends toward web 2.0 and social networks: Facebook, Twitter, FlickR and others have generated the demand of “Internet everywhere” in the users.
Increment of users with data plans

Increment of users with data plans

The increase in the number of data traffic users is good news for the telecom carriers, more users mean more money, but this increase also brings them three problems:

  1. More users mean more data traffic to handle, so carriers need more bandwidth. They have to upgrade their networks: in the access and in the backhaul.
  2. New services usually require more bandwidth. Web surfing is not sufficient. Telecom operators are facing a big challenge: Users want to watch videos on demand (YouTube, Vimeo…), talk with VoIP services (Skype), listen to real time music (Spootify), etc.
  3. The ARPU (Average Revenue Per User) seems to be decreasing in the present scenario.

These three facts (and some other ones) start to be a problem to theperformance and to the value of the 3G nets, which are not prepared for such a huge demand of data.

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