MEF: Benefits of Multiple Class Of Service Model For Mobile Backhauls

According to all wireless operators, delivering the bandwidth required in the 4G-LTE wireless backhaul is “the single biggest challenge and operating cost in the industry.” Currently a single class of service model is being deployed by the mobile operators at aggregation side where the traffic is classified and there after all the traffic is forwarded to a single EVC without defining the priority. Single-CoS scenario, however, does NOT respect these differing priorities which means at any point of time access provider cannot use the stat multiplexing.
To address the issue, a new multiple CoS model is added for the access providers. The configuration of the Mobile Operator CE devices is similar to that for the Single CoS Ethernet Mobile Backhaul alternative. The primary added configuration is ensuring that each Frame it passes to the Access provider is marked with the appropriate priority for that Frame. It does so by marking the Priority Code Point (PCP) bits in the Frame.

Mbh multi co-s positioning paper 2012011

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NodeB To RNC Communication Over MPLS Cloud

I am mulling on the current 3G network which doesn't give much room to the MPLS technology. But MPLS could be used to delivery nodeB traffic to RNC over MPLS cloud down the year. In the depicted figure, 3^rd party MPLS network is used instead of single aggregator router. 

By adding 3^rd party MPLS network or own MPLS network; providers can get the benefits of Traffic Engineering, QOS and Fast Reroute. The PWE3 again plays a vital role to deliver the services over MPLS cloud.  

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How nodeB communicates to RNC in 3G network?

In the previous post, a aggregator router is added to reduce the cost and the same router is also responsible for making communication possible between the nodeB and RNC side. As in the depicted diagram, ch-STM port is used towards nodeB aggregation and un Ch-STM port is used at RNC side. The reason for using un Ch-STM port at RNC side, to overbook the bandwidth. In case of ch-STM overbooking is not possible.

NodeB is allocating more than 2 E1s and to aggregate the nodeB bandwidth IMA groups are being used. The IMA group from ch-STM port is carried over PWE3 circuit towards the un Ch-STM port. By doing this we can aggregate more IMA groups towards the RNC side. This all calculation depends on the number of user and traffic. 

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Adding Aggregator Between NodeB and RNC in 3G

In my previous post of common backhaul, I have given a high level design of for the common backhaul used by the operators to serve 3G. But with that design, RNC need to be equipped with n*E1 links to serve the nodeB. We have the following disadvantages with design:-

1. As the nodeB traffic will increase, operator need to increase the E1 ports on RNC.

2. Adding E1 ports on RNC is really an expensive solution.

3. More operations and manageability.

4. Number of more physical links.

5. TDM means end to end E1 will be blocked whether traffic runs over it or not.

To address the above mentioned issues, operators need to add an aggregator router which would serve nodeB traffic towards the RNC and vice versa. By adding an aggregator router, operators can drastically reduce the cost of the network without making much change in the network.

What operators need to know before adding an aggregator router:-

1. An aggregator must support channelize STM port towards nodeB side.

2. An aggregator must support UN-channelize STM port towards RNC side.

3. Option to create an IMA group on aggregator.

4. Must support PWE3.

5. Static routing if require dynamic routing also. 

So the new design will look like after adding an aggregator router:-

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Common Backhaul For 2G, 2.5G and 3G

3G bidding was ended near to August and spectrum was allocated recently to service providers. In short duration of time how service providers are releasing 3G services and ensuring end to end connectivity over 3G. The mantra to launch 3G in short time because service providers are using their existing 2G and 2.5G backhauls. The only thing they need to add the nodeB and RNC infrastructure to enable 3G services.

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3G Life

3G is one of the best way to connect human network. For me 3G will open the doors to connect me swiftly over remote and reach anywhere in the world with no delays. It is not only opening doors towards the bandwidth but also giving new opportunities to vendors. By using 3G, one can surf fastly and by subscribing skype or gtalk, drastically reduce the phone bills.

Business Boost By 3G
I am feeling personally, 3G will drastically boost our house business. If all our clients would have 3G, then we can present the realtime demo of any of the product live. Earlier it is not like that.

Stay In Touch
Most of time I keep on travelling, by using 3G anytime I can see my friends and family members without any constraints.
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3G Services Licence Issued

The Government on Wednesday allocated spectrum for third generation (3G) mobile services to operators including Vodafone Essar, Reliance Communication and Tata Teleservices.
Mr Syed Safawi, CEO - Wireless Business, RCom “By releasing the 3G spectrum as promised, the Government has paved the way for the next revolution in mobile telecommunications. Reliance Communication is fully geared to bring alive this superior 3G experience to all its consumers.”
Tata Teleservices Ltd spokesperson said “We are delighted to have received 3G spectrum for commercial use in nine telecom crcles after the amendment in the UAS Licence. As announced earlier, we have already placed orders for 3G network equipment. We will now closely work with our partners NTT DoCoMo, acknowledged as the world leaderin telecom technology development, to put our network and content in place. We look forward to speedy rollout of world-class 3G services which will redefine the telecom experience in India.”
Licence disputes
“We are pleased to receive the spectrum today. Our implementation is on schedule and we will launch 3G services for our customers in a few months, “said Mr Samaresh Parida, Director Strategy, Vodafone Essar.
However, Aircel and Idea Cellular's plans to roll out third generation (3G) mobile services in Chennai and Punjab respectively could get delayed with the Department of Telecom caught in a technical issue with respect to licensing. While in the case of Aircel having two separate cellular licences for Tamil Nadu and Chennai is coming in the way, for Idea Cellular having overlapping licences in Punjab is the problem spot.
Under the old cellular services regime, Chennai and Tamil Nadu were divided into the two separate circles. As a result, Aircel had got two separate mobile licences. However, when it came to 3G auction, the DoT considered Tamil Nadu and Chennai as a single unit. Post-the auction, the DoT is issuing amendment to those bidders who already have a licence incorporating the new 3G guidelines.
In Aircel's case, the Tamil Nadu cellular licence does not include Chennai; therefore, the DoT cannot amend service conditions for Chennai to include 3G services.
Idea Cellular may have to surrender one of their licences in Punjab. Idea had got its own licence for Punjab, but also acquired Spice Cellular which had operations in the same circle. The company has been seeking a refund for surrendering the licence.
Source Hindustan Business Line
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Stop 3G Services In India

The Union Ministry of Home Affairs (MHA) has asked the Department of Telecommunications (DoT) to direct service providers to stop the operation of all third generation (3G) mobile services across the country, “particularly in Jammu & Kashmir”, till the infrastructure to enable full tapping of lines is put in place.
Noting BSNL’s launch of 3G services in Jammu, the MHA said apart from problems in interception of video calls, the existing lawful tapping infrastructure is severely limited in providing usable intercepts.
“The feasibility of blocking all such services for which there is no demonstrated monitoring capability to provide lawful interception may be explored by DoT. Till a solution is arrived, all telecom service providers may be directed not to provide 3G services, particularly in Jammu & Kashmir,” the MHA said in a communication to Telecom Secretary P J Thomas.

This issue had come up last year, too, when DoT had asked BSNL and MTNL to have call monitoring facilities to enable security agencies to intercept the calls in 3G mobile services.

Highlights:-
# Only BSNL and MTNL offer 3G services currently

# BSNL has a 3G subscriber base of 1.5 million, MTNL has 400,000 subscribers

# Private players to launch 3G by end of 2010 or early 2011

# Government earned over Rs 1 lakh crore from 3G and BWA auctions recently

Source:- Business-Standard
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