Crash course in Mobile technology from 1G to 5G

Sunday, 22 April 2012

Summary of tweets from #ITMoptimisation

Here is the summary of tweets from the Optimisation conference - #ITMoptimisation for those who missed them:


@patricksteemers: LTE optimization conference started. Kim Larsen kicks it off #TME

@patricksteemers: a typical user spends 80% of mobile data traffic on just 3 cells #TME

@zahidtg: After introducing CELL_PCH the PS Signalling reduced by 50% in TMo Netherlands

@zahidtg: Nice talk by @kimklarsen

@zahidtg: The network state equation by @kimklarsen

@zahidtg: Martin Prosek has already set the stage for my presentation and breakfast briefing tomorrow.

@zahidtg: Signalling load per OS in TEF CZ

@KimKLarsen: pdp context parking helped Telefonica O2 Czech in reducing signaling and improve pdp connection success rate!

@KimKLarsen: Nich Waegner #Qualcomm often overlooked! advanced receivers greatly improve the network capacity and performance.

@zahidtg: Smart WiFi offload

@zahidtg: Migrating from 2G to LTE directly sounds interesting

@KimKLarsen: Dirk Schoeneboom is setting the scene for GSM to LTE migration!

@zahidtg: Me -> Its always tricky going from 2G to LTE considering that few devices are available and have quite a few bugs

@KimKLarsen: LTE TDD 2.3/2.6 top runner for main LTE band (i.e., China & India) in terms of LTE users!

@kitkilgour: @KimKLarsen @zahidtg do you have more information on PDP context parking? what it is, how it works?

@zahidtg: @kitkilgour Will have to check with Martin Prosek as I dont know much about it as well (Cc @KimKLarsen)

@KimKLarsen: Dirk Schoeneboom recommends first launching 3G, prior to refarming 2G band to LTE as likely dormant 3G terminal in base.

@zahidtg: Telefonica UK has already refarmed 900MHz from GSM and moved to 3G in the city centres mainly. In future they see 4G on 900MHz as well

@KimKLarsen: Dirk S>Really important to know the terminal mix in the base! Launching 3G today could have substantial 3G base from start!

@zahidtg: In 2010: 75% of 2G data traffic was from 3G devices, mainly to save battery life - Robert Joyce, Telefonica UK

@KimKLarsen: Rob Joyce, deploying UMTS @ 900MHz is between 3 to 2 times cheaper to deploy per unit provided capacity.

@KimKLarsen: TF UK uses their EGSM band for their UMTS 900 (as this was not highly utilized ... Still took 18 month to refarming)

@KimKLarsen: TF UK launch 3G 900 Jan 11 and expect to extend to full network by 201X ;-) X>2012 but maybe also <2015 (as GSM phases out)

@zahidtg: Robert Joyce, Telefonica UK presentation is full of interesting stats, need to blog about it later :)

@KimKLarsen: TF UK experienced ca. 22% data offload to UMTS900 from 2100!

@KimKLarsen: U900 base 3G layer and U2100 the capacity layer ; Keeping traffic there and avoid HO to 900 challenging.

@KimKLarsen: TF UK calls their UMTS900 their Heineken network (they are also where nobody else are) ...;-)

@zahidtg: O2 UK is refarming the 900MHz spectrum and they will be using 5MHz for UMTS but there will still be some GSM channels

@patricksteemers = Great case on refarming GSM spectrum to cater for smartphone use. #TME

@zahidtg: In Panel discussion @patricksteemers reminds us of those good(?) old days when the main discussions were about Killer App(s) :-)

@zahidtg: TF: 75% of data traffic is from laptops but 75% of signalling traffic is from smartphones

@zahidtg: Robert Joyce, Telefonica UK says that on their Unlimited LTE trial n/w, biggest consumer consumes 55GB/week, Avg=2GB/month

@zahidtg: @KimKLarsen asks the audience if anyone will pay extra for facebook access, no one raises they hands :-))

@zahidtg: Martin Prosek, Telefonica, Czech Republic, points out that in the last year the amount of upload has doubled on average

@zahidtg: Thanks @patricksteemers for being an excellent chair. Enjoyed the panel discussion.

@KimKLarsen: @zahidtg amazing!!! I would pay extra! and I know my teenage daughter would! ... Hmmm ;-)

@KimKLarsen: the majority of mobile operators price plans are a sure road towards what they so much fear ... Becoming dumb bit pipes


@zahidtg: Ready for my breakfast briefing :-)

@KimKLarsen: had a really good breakfast discussion on #offload and on-load strategies and how to optimize between the two options.

@KimKLarsen: Yves Bellego, FT, France Telecom / Orange target to have 1/3 of all their cell sites shared within the next few years!

@zahidtg: Good to hear that Bell Canada has 6/7 carriers for UMTS in most places.

@zahidtg: Ljupco Jorguseski, TNO gave an interesting presentation on Optimisation but we will have to wait for technical details

@zahidtg: Its interesting that in #ITMoptimisation there are only 1 (today 2) women out of approx. 80 people. Should have a blog discussion on why...

@zahidtg: Capacity planning in mobile data networks experiencing exponential…

@zahidtg: @patricksteemers just mentioned that open WiFI hotspots can spoof operator networks that can be a major security risk

@zahidtg: LTE Optimisation 

@zahidtg: Adnan Salkic is talking about evolution of WLAN interworking with 3GPP - Simplification of offloading

@zahidtg: Adnan Salkic has an interesting slide on different WLAN solutions being used by different operators. On blog once available

@zahidtg: Tiago Rodrigues of WBA speaking on Carrier WiFI

@zahidtg: 5C's of WiFi - Capacity Crunch. Coverage extension, Customer experience, Cost-effective access, Complimentary

@zahidtg: Need to check the WBA Next Generation Hotspot (NGH) program - Includes 802.1x, 802.11u, EAP-SIM & EAP-TLS/TTLS authentication

@zahidtg: WBA NGH trial phases

@zahidtg: Tiago Rodrigues, WBA says that for 10% of their members, 50% of traffic is being offloaded to WiFi

@disruptivedean: @zahidtg Thanks for your #ITMoptimisation tweets. Maybe ask a question about how other non-offload WiFi models (eg Onload) are supported?

@zahidtg: @disruptivedean Sure, in the Panel discussion in an hour.

@disruptivedean: @zahidtg My view is that offload is only use-case #3 or #4 for smartphone WiFi. Many uses are nothing to do with the MNO.

@zahidtg: David Antunes, Optimus, has loads and loads of useful results but too much info. Has to be analysed offline

@zahidtg: Good to hear CSFB working as it should be. 1.5-2.5s is setup time.

@zahidtg: Additional call setup time to CSFB expected to be shortened by DMCR (Missed what DMCR is...)

@zahidtg: Conclusion of LTE deployment challenges over legacy networks

@KimKLarsen: @zahidtg, good news! there is still a huge market potential for growing the mobile Internet access!

@KimKLarsen: @zahidtg bad news: users want true unlimited data access plans ... Kim> maybe this does not need to be bad!

@KimKLarsen: @zahidtg describes very well the Customer versus Operator dilemmas and competing interest!

@KimKLarsen: great illustration of the future smartphone traffic types: private wifi, 3G data, elastic wifi, on-load!...

@zahidtg: O2 puts wifi on the menu at McDonald’s - - Mentioned in my talk

@zahidtg: Telstra closed their Carrier-Wifi network when they launched 4G WiFi hotspot - - Mentioned in my talk

@KimKLarsen: my take away from Randall Schwartz, Wireless 20/20, is wifi offload networks are not a magic bullet but depends on market!!

@zahidtg: ABI Research estimates that carrier Wi-Fi can deliver data at 5% the cost of adding cellular capacity - Mentioned in my talk

@KimKLarsen: really enjoying Randall Schwartz techno-economics insights into wifi offloading strategies...This stuff really excites me!

@zahidtg: Yes Randall Schwartz, Wireless 2020 presentation is good but loads of info and it would need offline analysis

@zahidtg: Only half an hour for panel discussion at #ITMoptimisation . @KimKLarsen on the panel so I am only one to tweet

@zahidtg: The Panel topic is: Optimisation strategies for the successful deployment of next generation LTE - #ITMoptimisation - other ques not allowed

@zahidtg: @KimKLarsen "Whatever you deploy should be agreeable with the next gen technology. Should support both HSPA+ and LTE"

@zahidtg: David Antunes, Optimus "Backhaul is probably the most important issue in Optimisation"

@zahidtg: Stephane Teral, "General advice is that nice to have such event to discuss various optimisation issues"

@zahidtg: Stephane Teral, Infonetics Research very impressed with the event, thinks this is the right size and balance

@zahidtg: @KimKLarsen "Wifi gives some benefits but not that extreme benefits, wifi is not small cell, lesson learned in data mining is that mobile users are not mobile at all"

@zahidtg: Optimus did interesting experiement; users were asked to do various tasks on phone and were happy with 800Kbps connection

@zahidtg: Question asked if there is a case for Carrier Wifi except for offload.

@zahidtg: Stephane Teral says that when the user offload, it should onload to carrier wifi so they can be tracked

@zahidtg: David Antunes, Optimus says that if they offer true unlimited data offloading is useful to improve network capacity

@zahidtg: @KimKLarsen says that Carrier Wifi can help solve international data roaming issues (before being forced by EU)

@disruptivedean: Only if the user chooses the carrier's WiFi, surely? MNO shouldn't be tracking use of private, open, ...

@zahidtg: @disruptivedean #ITMoptimisation Sorry time constraints, cant ask another question :-(

@zahidtg: Ok, last presentation at #ITMoptimisation by Mark Nash, iPass - Commercializing Wi-Fi

@zahidtg: what role will WiFi play in 4G

@zahidtg: Mark Nash, iPass: By 2015 there will be around 5.8million public Wifi hotspots available

@zahidtg: 3G data roaming prices - rip off?

@disruptivedean: @zahidtg Monthly subscription model inappropriate for roaming, except for handful of regular travellers

@zahidtg: @disruptivedean I wont mind paying that amount even for 2 days as I know, will not have to worry about bundle allowance

@zahidtg: Mark Nash, iPass points out that so many operators are losing business because of stupid roaming rates.

@zahidtg: iPass closing remarks

@zahidtg: Thanks to fellow tweeter @KimKLarsen. Looking forward already to #LTEWS next month. 


@zahidtg: The concept of 'PDP Context Parking' #ITMoptimisation

@zahidtg: Operators strategy for supporting the ‘Mobile Data Explosion’ -

Note that tweets have been edited for clarity


@patricksteemers = Patrick Steemers
@zahidtg = Zahid Ghadialy
@KimKLarsen = Dr. Kim Larsen
@kitkilgour = Kit Kilgour
@disruptivedean = Dean Bubley

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