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Showing posts with label Ericsson. Show all posts
Showing posts with label Ericsson. Show all posts

Tuesday, 3 February 2015

5G: A 2020 Vision


I had the pleasure of speaking at the CW (Cambridge Wireless) event ‘5G: A Practical Approach’. It was a very interesting event with great speakers. Over the next few weeks, I will hopefully add the presentations from some of the other speakers too.

In fact before the presentation (below), I had a few discussions over the twitter to validate if people agree with my assumptions. For those who use twitter, maybe you may want to have a look at some of these below:







Anyway, here is the presentation.

 

Sunday, 20 July 2014

LA-LTE and LAA


Recently came across a presentation by Ericsson where they used the term LA-LTE. I asked a few colleagues if they knew or could guess what it means and they all drew blank. I have been blogging about Unlicensed LTE (a.k.a. LTE-U) on the Small Cells blog here. This is a re-branding of LTE-U

LA-LTE stands for 'Licensed Access' LTE. In fact the term that has now been adopted in a recent 3GPP workshop (details below) is Licensed Assisted Access (LAA).

Couple of months back I blogged in detail about LTE-U here. Since then, 3GPP held a workshop where some of the things I mentioned got officially discussed. In case you want to know more, details here. I have to mention that the operator community is quite split on whether this is a better approach or aggregating Wi-Fi with cellular a better approach.

The Wi-Fi community on the other hand is unhappy with this approach. If cellular operators start using their spectrum than it means less spectrum for them to use. I wrote a post on the usage of Dynamic Spectrum Access (DSA) Techniques that would be used in such cases to make sure that Wi-Fi and cellular usage does not happen at the same time, leading to interference.

Here is a presentation from the LTE-U workshop on Use cases and scenarios, not very detailed though.



Finally, the summary presentation of the workshop. As it says on the final slide "The current SI proposal focuses on carrier aggregation operations and uses the acronym LAA (Licensed Assisted Access)", you would be seeing more of LAA.


Friday, 13 September 2013

LTE for Utilities and Smart Grids

This has been an area of interest for the last couple of years. Discussions have been centred around, "Is LTE fit for IoT?", "Which technology for IoT", "Is it economical to use LTE for M2M?", "Would small cells be useful for M2M?", etc.

Ericsson has recently published a whitepaper titled "LTE for utilities - supporting smart grids". One of the table that caught my eye is as follows:


LTE would be ideally suited for some of the "Performance class" requirements where the transfer time requirements is less than 100ms. Again, it can always be debated if in many cases WiFi will meet the requirements so should WiFi be used instead of LTE, etc. I will let you form your own conclusions and if you are very passionate and have an opinion, feel free to leave comment.

The whitepaper is embedded below:



Related posts:


Sunday, 7 July 2013

500 Billion devices by 2030, etc...

Few weeks back in the LTE World Summit 2013, I heard someone from Ericsson mention that internally they think that by 2030 there will be 500 Billion Connected devices on the planet. The population projections for 2030 is somewhere around 8.5 Billion people worldwide. As a result the figure does not come much as a surprise to me.

John Cunliffe from Ericsson is widely credited for making the statement 50 Billion connected devices by 2020. Recently he spoke in the Cambridge Wireless and defended his forecast on the connected devices. He also provided us with the traffic exploration tool to see how the devices market would look up till 2018. Here is one of the pictures using the tool:



In terms of Cellular connectivity, we are looking at 9 Billion devices by 2018. The interesting thing to notice is that in 2017, there are still some 4 Billion feature phones. While in the developed world our focus is completely on Smartphones, its interesting to see new and existing SMS/USSD based services are still popular in the developing world. Some months back I heard about Facebook developing SMS/USSD based experience for Feature phones, I am sure that would attract a lot of users from the developing world.

One thing missing from the above is non-cellular connections which will make bulk of connectivity. Wi-Fi for example is a major connectivity medium for tablets. In fact 90% of the tablets have only WiFi connectivity. Bluetooth is another popular method of connectivity. While its mostly used in conjunction with phones, it is going to be a popular way of connecting devices in the Personal Area Network's (PAN's). So its no surprise that we will see 50 Billion connected devices but maybe not by 2020. My guess would be around 2022-23.

Monday, 1 July 2013

Is it too early to talk '5G'


While LTE/LTE-A (or 4G) is being rolled out, there is already a talk about 5G. Last week in the LTE World Summit in Amsterdam, there was a whole track on what should 5G be without much technical details. Couple of months back Samsung had announced that they have reached 5G breakthrough. In my talk back in May, I had suggested that 5G would be an evolution on the Radio Access but the core will evolve just little. Anyway, its too early to speculate what the access technology for 5G would be.

Ericsson has published a '5G' whitepaper where they talk about the vision and why and what of 5G rather than going into any technical details. It is embedded below:

Wednesday, 1 May 2013

Video: Quick summary of 3GPP Release 12 features

Ericsson recently posted a very good summary video of Release-12 features. My comments and more details are posted below the video:


You may have noticed that LTE Release 12 is also referred to as LTE-B as I posted in my blog post here. Unfortunately, this terminology is not supported by 3GPP which refers to all advancements of LTE as LTE-A. See comment on the post I just referred.

The Elevation Beamforming is also referred to as 3D-Beamforming or 3D-MIMO as I show here.

I havent written any posts on Dual connectivity and not exactly sure how it works but there is an interesting presentation on the Small Cells Enhancements in Release-12 on my blog here.

You can learn more about the WiFi and EPC Integration here.

Click on the following Direct Communications, Device to device (D2D) and Public Safety for more information on the topics.

There are many good presentations on Machine Type Communications (MTC) or M2M that are available on this label here.

Finally, I havent seen much about the lean carrier but now that I know, will add some information on this topic soon.

Related links:

Wednesday, 23 January 2013

LTE-B, LTE-C, ... , LTE-X

Please make sure to read the comment from Kevin Flynn of 3GPP at the end


When I saw this picture above, I started wondering what LTE-B, etc. and started digging a bit deep. Came across this Ericsson presentation (embedded below) that shows the breakdown.

To just be sure that this is not Ericsson specific term, I also found a presentation by NTT Docomo (embedded below)
So I guess using LTE-B, LTE-C, etc. is better than saying 4.1G, 4.2G, etc. as we did in case of 3G/HSPA.


The presentations from Ericsson and NTT Docomo embedded below, available to download from Slideshare.






Thursday, 30 August 2012

Saturday, 25 August 2012

Friday, 15 June 2012

Three Phases of WiFi Integration


From a presentation by Ericsson in the LTE World Summit 2012. Presentation available here.

Operator WiFi is becoming an important proposition and there are advantages and disadvantages of both of them. The above picture summarises the phases in which it may take place.

See also:

Friday, 9 March 2012

Thursday, 23 February 2012

High level view on how SMS works in LTE


The following is from E\\\ whitepaper available here:


In 2010, 6.9 trillion text messages were sent globally and this figure is expected to break the eight trillion mark in 2011. This represents USD 127 billion in revenue for operators. LTE provides the same basic SMS features, such as concatenated SMS, delivery notification and configuration. However, the SMS delivery mechanism is somewhat different. A VoLTE device can send and receive text messages encapsulated within a SIP message. To receive a text message, the encapsulation process is invoked by an IP short-message-gateway in the IMS domain, and the gateway converts traditional Signaling System Number 7 (SS7) Mobile Application Part (MAP) signaling to IP/SIP.


To ensure that text messages are routed via the gateway, the home location register (HLR) of the recipient needs an additional function to return a routable gateway address back to the SMS-C on receipt of an SMS-routing request.


When a VoLTE device sends a text message, it should perform the encapsulation. The gateway extracts the text message inside a SIP MESSAGE signal before passing it on to the SMS-C.


However, if the VoLTE device is configured to not invoke SMS over IP networks, text messages can be sent and received over LTE without the need for any SIP encapsulation. A received text message will reach the mobile switching center server (MSC-S) of the mobile softswitch system in the same way as it does today. The MSC-S will page the device via the SGs interface with the Mobile Management Entity (MME) of the EPC system. Once a paging response is received, the MSC-S will pass the SMS on to the MME, which in turn tunnels it onto the device. Due to the support for SMS delivery and IP connectivity provided by LTE/EPC, MMS works seamlessly.


For more technically minded people, there is a whitepaper that covers SMS in detail available here.

Monday, 7 November 2011

Ericsson Video: Networked Society 'On the Brink'


In On The Brink we discuss the past, present and future of connectivity with a mix of people including David Rowan, chief editor of Wired UK; Caterina Fake, founder of Flickr; and Eric Wahlforss, the co-founder of Soundcloud. Each of the interviewees discusses the emerging opportunities being enabled by technology as we enter the Networked Society. Concepts such as borderless opportunities and creativity, new open business models, and today's 'dumb society' are brought up and discussed.

Saturday, 22 October 2011

Ericsson Video: Using LTE to broadcast Danish elections



Danes elected a new parliament September 15. As four teams from TV 2 moved between party headquarters, Parliament House and celebration sites, they used standard off-the-shelf LTE terminals to upload interviews to the tv-station, which in turn broadcast the content live to viewers on their channel.

The solution is provided by operator TDC, on the network supplied and managed by Ericsson.

Tuesday, 18 October 2011

HD Voice - Next step in the evolution of voice communication

Nearly 2 years back I blogged about Orange launching HD Voice via the use of AMR-WB (wideband) codecs. HD voice is already fully developed and standardized technology and has so far been deployed on 32 networks in almost as many countries.

People who have experienced HD voice say it feels like they are talking to a person in the same room. Operators derive 70 percent of their revenue from voice and voice-related services, and studies show that subscribers appreciate the personal nature of voice communication, saying it offers a familiar and emotional connection to another person.

HD voice is also a reaction to the competition faced by the operators from OTT players like Skype.

Below is an embed from the recent whitepaper by Ericsson:



For more information also see: