Monday, 31 May 2010
Sunday, 30 May 2010
The ng connect program ecosystem brings together lots of companies that are collaborating from research to sales and marketing. If you click in the picture above you will be able to see the enlarged image and at the bottom you can see the names of these companies. The car is ofcourse Toyota but I wasnt able to see that in the list of companies.
Friday, 28 May 2010
The problem in UMTS/HSPA is that these state transitions take quite some time (in mobile terms) and can slow down the browsing experience. Martin has blogged about the state transition problems because of the keep alive messages used by the Apps. These small data transfers dont let the UE go in the IDLE state. If they do then whole raft of signalling has to occur again for the UE to go to CELL_FACH or CELL_DCH. In another post Martin also pointed out the sluggishness caused by the UE in CELL_FACH state.
Mike Thelander of the Signals Research Group presented similar story in the recently concluded LTE World Summit. It can be seen from the figure above that moving from IDLE to CELL_DCH is 1-3secs whereas FACH to DCH is 500ms.
Thursday, 27 May 2010
- 5G - Not sure if people will buy this. Assuming that LTE-Advanced specs are ready by March 2011 (as is predicted) then people wont be ready to jump from 4G to 5G this soon.
- 4G+ - Not sure if this sounds sexy enough
- Super 4G - Boring
- Turbo 4G - reminds me of F1
'Providing an effective means to remotely stop a vehicle is fast becoming a priority,' Hammond told a European conference. 'The development of a safe and controlled system to enable remote stopping has the potential to directly save lives.'
Wednesday, 26 May 2010
Tuesday, 25 May 2010
This QoS can be varied based on deep inspection of the packets which can tell the operator as to what service a particular packet belongs to. The operators can thus give higher priority to the services and applications that are recommended by them and also block certain services that can be deemed as illegal or unproductive (like file sharing or P2P).
Continuous Computing claims to be one of the market leaders in producing the DPI systems. You can read this article by Mike Coward who is the CTO and Co-founder of Continuous computing here.
Monday, 24 May 2010
A slightly older report from Ericsson suggested that from operator point of view, 1GB data transfer can cost as low as 1 euro.
So if we now plug in the above information into the slide below, presented by Moray Rumney of Agilent in the LTE World Summit, we can see that the operators have been earning massive profits on our behalf.
With Mobile broadband becoming more common and cheaper, users may not be willing to pay any more than they are now. At the same time, they may expect the speeds to keep increasing at regular intervals. The operators will soon be forced (if not already doing so) to offer QoS based packages which can help them boost their revenue and provide better QoE to the higher paying users.
I will cover this issue of QoS, QoE and DPI in the upcoming posts.
If you are wondering along the lines of how to reduce this cost per bit then I would recommend you to go back and have a look at this discussion on Martin Sauter's blog.
Saturday, 22 May 2010
Thursday, 20 May 2010
Wednesday, 19 May 2010
Tuesday, 18 May 2010
Monday, 17 May 2010
Saturday, 15 May 2010
Winners of the first World Vendor Awards were revealed during a dinner at the UnderGlobe in London on the 5 May 2010.
Friday, 14 May 2010
With the rapid growth of wireless data traffic, now greatly exceeding voice traffic in many developed markets, operators are anxious to quickly expand the capacity and coverage of their wireless networks. To address these demands for increased capacity in a cost effective way, 3GPP standards have incorporated powerful techniques for using “smart antennas.”
“The gains in spectral efficiency being advanced by new wireless air interface technologies, such as LTE and LTE-Advanced, will be enabled by the application of MIMO and other smart antenna technologies,” stated Kevin Linehan, Vice President and Chief Technology Officer – Base Station Antenna Systems, Andrew Solutions. Linehan, one of the project leaders for the creation of the 3G Americas report continued, “It is critical that operators and others in the industry appreciate these advanced technologies and their practical application.”
The term smart antennas refers to adaptive array antennas – those with electrical tilt, beam width and azimuth control that can follow relatively slow-varying traffic patterns; intelligent antennas, which can form beams aimed at particular users or steer nulls to reduce interference; and MIMO antenna schemes, predominately featured in LTE and LTE-Advanced.
The white paper was created by a 3G Americas technical work group and concentrates on the practical aspects of antennas and their deployment for 3G and 4G wireless systems, specifically downlink antenna techniques available in 3GPP LTE Release 8. The comprehensive report highlights a substantial and growing body of theoretical and field experience that provides reliable guidance on the tradeoffs of various antenna configurations. Some of the areas addressed in the paper include:
- Smart antennas provide the next substantial increase in throughput for wireless networks. The peak data rates tend to be proportional to the number of send and receive antennas, so 4X4 MIMO is theoretically capable of twice the peak data rates as 2X2 MIMO systems. For another example, in upgrading from HSPA (1X2) to LTE (2X2) a gain of 1.6x is seen (Rysavy Research, 2009).
- The practical tradeoffs of performance with the realistic constraints on the types of antennas that can be realistically installed, cognizant of zoning, wind loading, size, weight and cabling challenges and constraints from legacy terminals and other equipment. Constraints are, of course, present in both the base station and the terminal side of the air interface, where MIMO technology promises useful gains if multiple antennas, amplifiers, receivers and baseband processing resources can be made available in terminals.
- Beyond the single antenna or beamforming array cases, 3GPP Release 8 of the LTE standard supports MIMO antenna configurations. This includes Single-User (SU-MIMO) protocols using either Open Loop or Closed-Loop modes as well as Transmit Diversity and MU-MIMO. Closed-Loop MIMO mode, which supports the highest peak data rates, is likely to be the most commonly used scheme in early deployments. However, this Closed-Loop MIMO scheme provides the best performance only when the channel information is accurate, when there is a rich multipath environment and is appropriate in low mobility environments such as with fixed terminals or those used at pedestrian speeds.
The white paper, MIMO and Smart Antennas for 3G and 4G Wireless Systems: Practical Aspects and Deployment Considerations, was written collaboratively by members of 3G Americas and is available for free download HERE.
While MIMO and Smart Antennas for 3G and 4G Wireless Systems concentrates on the practical aspects of deploying antennas in emerging wireless markets, 3G Americas’ June 2009 white paper, MIMO Transmission Schemes for LTE and HSPA Networks, provides additional background information on the processing gains feasible with smart antennas.
Thursday, 13 May 2010
Topics such as equipment availability and spectrum scarcity were high on the agenda, along with discussions on systems architecture evolution and backhaul issues.
- Manufacturers’ Presentations
- 3GPP and 3G Americas Presentations
Wednesday, 12 May 2010
Tuesday, 11 May 2010
Monday, 10 May 2010
Friday, 7 May 2010
Here is something from Cellular News today:
The European Commission has adopted a Decision establishing harmonised technical rules for Member States on the allocation of radio frequencies in the 800 MHz band that contribute to the deployment of high-speed wireless internet services by avoiding harmful interference.
In several Member States the 800 MHz frequencies are being freed up as part of the so-called "digital dividend" resulting from the switchover from analogue to digital television broadcasting. If Member States decide to change the existing frequency allocation (for broadcasting) they must immediately apply the harmonised technical rules laid down by the Decision to make these frequencies available to wireless broadband applications. Today's decision does not itself require Member States to make available the 790-862 MHz band for electronic communication services. However, the Commission is considering such a proposal in the forthcoming Radio Spectrum Policy Programme.
The Commission strongly supports the use of the 790-862 MHz band (currently used for broadcasting in most Member States) for electronic communication services and wants EU countries to act quickly, as coordinated management of this spectrum could give an economic boost of up to EUR44 billion to the EU's economy and help to achieve the EU 2020 Strategy target of high-speed broadband for all by the end of 2013 (with speeds gradually increasing up to 30 Mbts and above in 2020).
The new Commission Decision stipulates that all Member States which decide to make available the 790-862 MHz spectrum band (the so-called 800 MHz band) for services other than broadcasting should apply the same harmonised technical rules when they do so. These technical rules will ensure that radio communications equipment, like handsets or base stations using the 800 MHz band, can be used efficiently for wireless broadband networks, such as LTE or WiMAX.
Telecoms industry experts estimate that infrastructure to provide mobile broadband coverage using the 800 MHz band will be around 70% cheaper than through using the radio frequencies currently used by 3G networks. The lower costs involved in rolling out such networks will make these investments more attractive for operators, which should improve the geographic coverage of wireless broadband services. Application of the technical rules for frequency allocation foreseen by this Decision will substantially increase the potential economic benefits of the digital dividend by giving a new impetus to wireless internet services.
Until now, the 800 MHz band has been used for terrestrial TV broadcasting in most Member States. The new rules laid down in the Decision set out conditions for allocation of nearly one quarter of the frequencies that will become available when Member States switch from analogue to digital broadcasting (due by end 2012). The Commission is currently working on a Radio Spectrum Policy Programme that will take into account the other elements of the digital dividend and may also include a common date by which all Member States must make the 800 MHz band available.
Also read this post.
Thursday, 6 May 2010
- Operating a mobile network contributes around 30% to the annual costs of each operator, and there are many different ways to save money. Where before, coverage was a real differentiator between networks, today it’s much more about service.
- There are enormous savings to be made by sharing cellsites between operators – T-mobile and 3 in the UK have combined their cellsites and reduced the total number from 55,000 to 31,000 in the last two years. The number is now slowly expanding again to fill in coverage holes and add capacity. The recently announced merger between Orange UK and T-Mobile means a further round of site consolidation over the coming years. Meanwhile, their UK competitors O2 Telefonica and Vodafone have also made a site sharing agreement, meaning that there will be just two competing sets of cellsites across the country.
- Some speakers questioned the sense of offering unlimited flat rate data plans – the industry sentiment is that these can’t last. The highest traffic users are consuming disproportionate amounts of network resources – several examples were given of 2 or 3% of users taking up over 40% of available capacity.
- Kenny Graham, Vodafone R&D Group, has been a keen champion of femtocells in public areas for some time – coining the term metro-femto. He believes that the most difficult challenges for femtocell deployment have already been overcome. He classified femtocells into four groups and clearly believes all have a place in network deployment:
- Public service areas (indoor hotspots)
- Metro Femto (Outdoor hotspot )
- Installing more antenna and equipment at existing cellsites, such as required for LTE or MIMO technologies, is constrained by physical and planning limits of cellsites. Metro femto can be deployed unobstrusively in the urban areas with peak traffic demand, providing high levels of capacity.