Reducing 5G Device Power Consumption Using Connected-mode Discontinuous Reception (C-DRX)

Back in 2019, when we were still participating in physical event, I heard Sang-Hoon Park, ESVP, Head of Regional Network O&M Headquarter, KT talk about 'KT’s journey to large-scale 5G rollout' at Total Telecom Congress.

Interesting nugget from KT about battery life. 63% of users care about battery life but only 19% about design. Also the battery capacity has evolved significantly over generations. Finally C-DRX will play a big role in 5G battery saving @totaltelecom #TTCongress pic.twitter.com/665sokRH0T

— 3G4G (@3g4gUK) October 30, 2019

South Korea is blessed with three highly competitive MNOs and due to this, the government asked them to launch their 5G networks at the same time in 2018. I have also blogged about how KT is working on reducing the latency of their network here.

Anyway, as you can see in the picture above, using Connected-mode Discontinuous Reception (C-DRX), KT was able to show huge power saving in the 5G Samsung smartphone. They also made a video embedded below:

KT has some more details from their blog post back in 2019 here. Also some more details on RayCat here. Both the sites are in Korean but you can use Google translate to get more details.

What is KT battery saving technology (C-DRX)?

KT's'battery saving technology' is shortened to'Connected Mode Discontinuous Reception' and is called C-DRX. In simple terms, it is one of the technologies that reduces battery usage by periodically switching the communication function of a smartphone to a low power mode while data is connected.

In CDRX technology, the base station and the terminal share CDRX information through RRC setting and reconfiguration, so when there is no packet transmission/reception by the terminal, the terminal transmission/reception terminal can be turned off to reduce battery consumption, and the CDRX setting is optimized to reduce the user's battery consumption. It is possible to increase the available time for related applications.

In order to reduce the battery consumption of the terminal, it is a technology that controls the PDCCH monitoring activity, which is a downlink control channel related to the terminal identifier, through RRC. The base station controls the CDRX through RRC, and how the communication company optimizes and applies this was a big task. Is the first in Korea to optimize this technology and apply it to the national network.

In simple terms, the smartphone is not using communication, but it turns off the power completely and enters the standby state to reduce power consumption. When not in use, it completely turns off the power wasted in transmitting and receiving even during the standby time, thus extending the user's smartphone usage time.

As can be seen from the picture above, battery saving technology saves battery by completely turning off the communication function when there is no data or voice call. If the network does not have the battery saving technology applied, it is always connected to the communication network and waits even when not in use. Then, the battery is always connected to the communication function and the battery saving technology overcomes this part.

When Qualcomm announced their Industry’s First Mobile Platform with Integrated 5G back in 2019, the press release said:

The new integrated Snapdragon 5G mobile platform features Qualcomm® 5G PowerSave technology to enable smartphones with the battery life users expect today. Qualcomm 5G PowerSave builds on connected-mode discontinuous reception (C-DRX, a feature in 3GPP specifications) along with additional techniques from Qualcomm Technologies to enhance battery life in 5G mobile devices – making it comparable to that of Gigabit LTE devices today. Qualcomm 5G PowerSave is also supported in the Snapdragon X50 and X55 5G modems, which are expected to power the first waves of 5G mobile devices introduced this year.

The picture is from the slide deck here. See links in further reading below to learn more about this feature.

Further Reading:

• All about Wired and Wireless Technology: LTE Connected Mode DRX (link)
• Netmanias: Future LTE Designed by SK Telecom: ​(2) Application of C-DRX, July 2017 (link)
• Ericsson: A technical look at 5G mobile device energy efficiency, Feb 2020 (link)
• ZTE via IEEE Access: Power Saving Techniques for 5G and Beyond, July 2020 (link)

Related Posts:

• Operator Watch Blog: All three mobile network operators in South Korea launched 5G on Dec 1, 2018
• Operator Watch Blog: How is KT Reducing the Latency of their 5G Network 

Open RAN Explanation, Videos, White papers and Other Resources

Couple of years back, just before MWC 2019, we made what I would like to think of as the first proper explanation of Open RAN. I posted it on this blog here and the video has been viewed nearly 45,000 times. At that time, the concept of Open RAN was still quite new and in my day job with Parallel Wireless*, I was spending quite some time explaining what it really means.

Anyway, I think it made the concept of Open RAN so easy to understand that I have seen tens, if not hundreds, of people copy it, but only a few kind people give credit. 

With the Telecom Infra Project (TIP) and O-RAN driving the ecosystem further, I along with my Parallel Wireless colleagues, created a series of videos to explain the concept a bit more in detail. As expected, the introductory videos have been extremely popular while the others have been reasonably popular as well. The concept from these videos have been copied even far and wider than the original one. 

Embedded below is the playlist of all the videos (6 currently but 1 more in works):

In addition to these, I maintain a list of Open RAN whitepapers (publicly available without registration), some good articles, etc. on the 3G4G website here. I try and update the site on a regular basis so feel free to put any resources in the comments of this post and I will add them on the site during the next update.

Related Posts:

• The 3G4G Blog: O-RAN Introduction for Beginners
• The 3G4G Blog: A quick tutorial on Open RAN, vRAN & White Box RAN
• 3G4G: Open RAN, OpenRAN and O-RAN
• Telecoms Infrastructure Blog: Small Cells World Summit Open RAN Webinar
• The 3G4G Blog: From traditional RAN to Open RAN - O-RAN: Goals and Challenges
• Telecoms Infrastructure Blog: NTT Docomo's 5G Network is based on 'Open RAN' Principles 

*Full Disclosure: I work for Parallel Wireless as a Senior Director, Technology & Innovation Strategy. This blog is maintained in my personal capacity and expresses my own views, not the views of my employer or anyone else. Anyone who knows me well would know this. 

Free 6G Training

Last year we announced the launch of Free 5G Training. It was successful beyond our imagination. While we have just over 1,300 Twitter followers, on LinkedIn, we have over 30,000. The 5G for Absolute Beginners Udemy course already has over 6,000 students. This was a good enough motivation for us to launch a 6G equivalent with world's first 6G training course.

Back in November, we soft-launched the Free 6G Training website/blog along with Twitter and LinkedIn. The initial engagement and following are already very encouraging. 

We also created 'An Introduction to 6G Training Course' here. 6G Candidate technologies, that require most details and is the main area of focus for 6G will be added as and when I find time and have enough material.

There is also a new 6G Wireless R&D LinkedIn group that has been started to share information and discuss doubts, etc. I am hoping many people will be able to join.

If you are a 6G expert or researcher or have ideas on how I can do better or want to contribute with articles, presentations, videos, etc., please feel free to get in touch on LinkedIn.

One final thing, along with all this, the 3G4G page has a section on '6G and Beyond-5G Wireless Technology'. I add links to all publicly available whitepapers and other good material out there. 

It may also be useful to know that the 3G4G page has a search box on top that searches across all our channels and can be helpful in finding information on any mobile technology related topic.

NWDAF in 3GPP Release-16 and Release-17

We looked at Network Data Analytics Function, NWDAF, in detail here. While the 3GPP Release-16 work just starting back then, we have now completed Rel-16 and looking at Release 17. 

The 5G Core (5GC) supports the application of analytics to provide Intelligent Automation of the network, In Rel-16 the set of use cases that are proposed for the NWDAF has been widely expanded. 

In an earlier post, we looked at the ATIS webinar discussing Release-16 & forthcoming features in Rel-17. Puneet Jain, Director of Technical Standards at Intel and 3GPP SA2 Chairman talked briefly about NWDAF. The following is from his talk:

Release-16 provides support for Network Automation and Data Analytics.  Network Data Analytics Function (NWDAF) was defined to provide analytics to 5G Core Network Functions (NFs) and to O&M. It consists of several services that were defined in 3GPP Rel-16 and work is now going in Release 17 to further extend them. 

In release 16 Slice load level related network data analytics and observed service experience related network data analytics were defined. NF load analytics as well Network Performance analytics was also specified. NWDAF provides either statistics or prediction on the load communication and mobility performance in the area of interest. 

Other thing was about the UE related analytics which includes UE mobility analytics, UE communication analytics, Expected UE behavior parameter, Related network data analytics and abnormal behavior related network data analytics.

The NWDAF can also provide user data congestion related analytics. This can be done by one time reporting or continuous reporting in the form of statistics or prediction or both to any other network function. 

QoS sustainability analytics, this is where the consumer of QoS sustainability analytics may request NWDAF analytics information regarding the QoS change statistic for a specific period in the past in a certain area or the likelihood of QoS change for a specific period in future, in certain areas. 

In Release 17, studies are ongoing for network automation phase 2. This includes some leftover from Release 16 such as UE driven analytics, how to ensure that slice SLA is guaranteed and then also new functionality is being discussed that includes things like support for multiple NWDAF instance in one PLMN including hierarchies, how to enable real-time or near-real-time NWDAF communications, how to enable NWDAF assisted user pane optimization and last which is very interesting is about interaction between NWDAF and AI model and training service owned by the operator.

This article on TM Forum talks about NWDAF deployment challenges and recommendations:

To deploy NWDAF, CSPs may encounter these challenges:

• Some network function vendors may not be standards compliant or have interfaces to provide data or receive analytics services.
• Integrating NWDAF with existing analytics applications until a 4G network is deployed is crucial as aggregated network data is needed to make decisions for centralized analytics use cases.
• Many CSPs have different analytics nodes deployed for various use cases like revenue assurance, subscriber/marketing analytics and subscriber experience/network management. Making these all integrated into one analytics node also serving NWDAF use cases is key to deriving better insights and value out of network data.
• Ensuring the analytics function deployed is integrated to derive value (e.g., with orchestrator for network automation, BI tools/any UI/email/notification apps for reporting).

Here are some ways you can overcome these challenges and deploy efficient next-generation analytics with NWDAF:

• Mandate a distributed architecture for analytics too, this reduces network bandwidth overhead due to analytics and helps real-time use cases by design.
• Ensure RFPs and your chosen vendors for network functions have, or plan to have, NWDAF support for collecting and receiving analytics services.
• Look for carrier-grade analytics solutions with five nines SLAs.
• Choose modular analytics systems that can accommodate multiple use cases including NWDAF as apps and support quick development.
• Resource-efficient solutions are critical for on-premise or cloud as they can decrease expenses considerably.
• Storage comes with a cost, store more processed smart data and not more raw big data unless mandated by law.
• In designing an analytics use case, get opinions from both telco and analytics experts, or ideally an expert in both, as they are viewed from different worlds and are evolving a lot.

This is such an important topic that you will hear more about it on this blog and elsewhere.

Related Posts:

• The 3G4G Blog: ATIS Webinar on '5G Standards Developments in 3GPP Release 16 and Beyond'
• The 3G4G Blog: Automating the 5G Core using Machine Learning and Data Analytics
• The 3G4G Blog: Artificial Intelligence - Beyond SON for Autonomous Networks
• 3G4G: 5G Service Based Architecture (SBA) 

Banana and Egg gets 5G Telesurgery

Last year I wrote a detailed post on '5G Remote Surgery and Telehealth Solutions' here. Since then many people with little or no understanding of how the technology works have got in touch with me to educate me about all the 5G remote surgeries taking place. 

I am always prepared to learn new things and looked at both of these surgeries (detailed below) with open mind. I was still unable to see the 5G angle here. In fact in the case of banana, I don't even know if 5G was used.

Back in 2014, a BBC article detailed how a surgeon in Canada has performed over 20 remote surgeries with the help of a robot including colon operations and hernia repairs. The article goes on to ask, "The technology behind long-distance surgery is now mature enough to be used more widely, allowing people to access world-leading expertise and better healthcare without having to travel. Could it become the norm in hospitals?"

The first case is from Aug 2020 as shown in the video above where Doctor Liu Rong from a hospital in Beijing takes on the challenge of remotely controlling a medical robot in distant Qingdao City via the 5G network to finish an egg membrane suture surgery in 90 minutes.

The question here is that where exactly was 5G used and why? Did both the ends have 5G or just one end? Etc. I was unable to find a schematic to show the end-to-end details that would provide credibility to such a scenario.

To explain what I mean, when Vodafone UK launched 5G, they demonstrated low latency by giving an example of Haptic tackle using TeslaSuit. You can read the details and watch the video here. 

As you can see, the end-to-end solution architecture is nicely explained as shown in this picture. I would expect a similar kind of schematic for the surgery scenario. While I can clearly understand the use case for sports outdoor, I am not able to understand the use case for the surgery indoors. Where was the access point? What frequency was used? Was this Standalone or Non-Standalone network? And many other questions like these. 

The second case was a more recent one. The video is embedded below.

Even though the video mentions 5G and many other sites (see this LinkedIn post with nearly 2.5 million views) that have picked this up mention 5G, the original Instagram video does not mention 5G. In all likelihood there is no 5G connection with this one.

Surely there will be a real life 5G remote surgery use case someday that will capture our imagination but not today.

Related Posts:

• The 3G4G Blog: 5G Remote Surgery and Telehealth Solutions 
• The 3G4G Blog: Real-life 5G Use Cases for Verticals from China 

Some Cool Gadgets from CES 2021

 

With all the disruption on events and conferences due to Covid-19 pandemic, it wasn't a surprise that CES 2021 was completely digital. It was also moved by a week so it did disrupt a few smaller events here and there. I thought it may be worth sharing a few quick videos to give you an idea about the big announcements out there. BBC has a nice detailed coverage of the whole event here.

Let's start with this short 4 mins video from CNET that quickly shows all the best devices from CES 2021.

The next is this slightly longer 12 minute video that has 20 awesome gadgets for smart homes.

Finally, there is this 11 minute plus video that is a summary of all new mobile phone technology. It's not as polished as the ones before but still good enough.

In addition, here are some links for you to watch the keynotes from relevant to our industry:

Samsung gets full marks for making a short event highlights video here. In addition, they have a press conference video and a detailed keynote video. All details are on their CES microsite here.

TCL's rollable phone and tablet is nicely captured by CNET here. Their CES microsite is here.

LG Electronics may want to learn a few tricks from Samsung as far as making microsites and videos are concerned. They CES micro site is here. The full press conference is here while Engadget summarises the keynote in just over 9 mins here. LG Wing video here makes an interesting viewing.

Finally, here are 3 links that have summarised the best/weird gadgets from CES and yes there are overlaps in their choices

• DigitalTrends: The 15 coolest gadgets at CES 2021
• Pocket-lint Best of CES 2021 Awards: The 15 top gadgets, TVs, laptops and more
• Wired: The best (and strangest) new gadgets from CES 2021
• Mobile World Live - Mobile Mix: Viva Las Living Room

If you want to share something, feel free to comment.

Related Posts:

• Free 6G Training: Summary of CW '6G devices of 2030' Seminar
• The 3G4G Blog: Multi-SIM Terminology
• The 3G4G Blog: Embedded SIM (eSIM) and Integrated SIM (iSIM)
• The 3G4G Blog: The Futuristic Concept of 'Smart & Intelligent' Batteries
• The 3G4G Blog: CW Seminar: The present, the future & challenges of AR/VR (#CWFDT) 

UE Radio Capability Signaling Optimization (RACS) in Rel. 16

The data volume of UE Radio Capability Information defined in 3GPP 38.306 is already high and will further increase starting with Rel. 16 due to additional supported bands and other features.

Due to this 3GPP has standardized in Release 16 what is called UE Radio Capability Signaling Optimization (RACS) for both, E-UTRAN/EPS and NG RAN/NGC networks. 

Release 16 RACS does not apply to NB-IoT.

The first key element of this feature set is the introduction of a new UE Radio Capability ID that is structured as defined in 3GPP 23.003 and shown in figure 1 below:

Figure 1: UE Radio Capability ID according to 3GPP 23.003

The components of this new ID are:

•    TF - Type Field (TF): identifies the type of UE radio capability ID.

            Type = 0 -> manufacturer-assigned UE radio capability ID
            Type = 1 -> network-assigned UE radio capability ID

•  The Vendor ID is an identifier of UE manufacturer and only present if TF = 0. The vendor IDs are provided by Internet Assigned Numbers Authority (IANA). The complete list of assigned numbers is publicly available here: https://www.iana.org/assignments/enterprise-numbers/enterprise-numbers

•  The Version ID configured by the UE Capability Management Function (UCMF) that is part of the EPS/5GC. The Version ID value makes it possible to detect whether a UE Radio Capability ID is current or outdated.

·      The Radio Configuration Identifier (RCI) identifies the UE radio configuration.

The PLMN-assigned UE Radio Capability ID is assigned to the UE using the Non-Access Stratum UE Configuration Update Command or Registration Accept message (figure 2).

Figure 2: PLMN-assigned UE Radio Capability Update according to 3GPP 23.743

The new UCMF (UE radio Capability Management Function) stores All UE Radio Capability ID mappings in a PLMN and is responsible for assigning every PLMN-assigned UE Radio Capability ID.

Due to introduction of the UMCM in the core networks the new Nucmf service-based interface is defined for the 5GC and new S17 reference point is defined for the EPS as shown in figure 3.

Figure 3: Network Architecture with UCMF according to 3GPP 21.916

Each UE Radio Capability ID stored in the UCMF can be associated to one or both UE radio capabilities formats specified in 3GPP TS 36.331 [LTE RRC] and 3GPP TS 38.331 [NR RRC]. The AMF must only be able ot handle the NR RRC format while the MME uses the LTE RRC format. Which format is required by the UCMF is configurable.

If at any time the AMF/MME has neither a valid UE Radio Capability ID nor any stored UE radio capabilities for the UE, the AMF/MME may trigger the RAN to provide the UE Radio Capability information and subsequently request the UCMF to allocate a UE Radio Capability ID.

In NG RAN the UE Capability Request can be requested by the AMF as a flag in any NGAP Downlink NAS Transport message or by sending a NGAP UE Radio Capability Check Request (for checking compatibility of IMS voice capabilities). This triggers a NR RRC UE Capability Transfer procedure and subsequently NGAP UE Radio Capability Info Indication or NGAP UE Radio Capability Check Response (for IMS voice support parameters).

Using the NGAP UE Capability ID Mapping procedure the NG RAN node is able to request the most recent UE Capability ID mapping information from the core network functions AMF/UCMF. The same functionality is implemented in S1AP for signaling between eNB and MME/UCMF.

If the volume of the LTE/NR RRC UE Capability to be sent by the UE is larger than the maximum supported size of a PDCP SDU (specified in 3GPP 38.323) then the UE Capability Info can be transported in LTE/NR RRC using a chain of UL Dedicated Message Segment messages.

Figure 4: RRC UL Dedicated Segment Message transporting UE Radio Capability Information according to 3GPP 36.331 and 38.331

Each of these message will have a dedicated segment number and the last one has the rrc-MessageSegmentType =  “lastSegment”, which triggers reassembly of the orignal UE Capabability information in the receiving entity.

5G for Content Acquisition and Distribution

The Cambridge Wireless (CW) Content Production & Delivery group recently delivered a two part webinar series exploring ‘5G for content acquisition and distribution’ These online events introduced participants to the state of play with 5G for content distribution and production and the path to delivering the benefits 5G.

Aspirational discussion of benefits of 5G for content production and distribution needs to be turned into operational reality. 5G will enhance what is possible to be achieved with current mobile systems and the advantages to distribution and consumption are obvious through bigger pipes and enhanced agility to support ever evolving content and application platforms. The possibilities for content production and acquisition are also exiting but may be less obvious. 5G will allow service and capacity to be delivered where required through use of small cell and potentially highly localised private 5G networks, edge computing and support of a wide range of equipment and applications (not just those use cases directly involved in content acquisition).

The first session on 24 Nov 2020 in the series considers the role of 5G for content distribution and security. It covers the role of 5G for the creation of a more varied and vibrant ecosystem for content and the desire of some content creators for greater focus on security.

Henry Johnson, Director, Plum Consulting, '5G opportunities in the provision of content distribution' - 5G services promise to provide connectivity performance in terms of bandwidth and latency which have hitherto been possible only with fixed network connectivity. This session will look into the capabilities and potential limitations of 5G services once deployed and what that might mean for content delivery to consumers. [PPT presentation]

Malcolm Brew, University of Strathclyde, ‘5G-enabled remote broadcast’ - Malcolm will share some Strathclyde’s insights over the last 10 years in working with BBC and Ofcom on ‘Spectrum Sharing’ and how this has recently been lead to working in an IBC Accelerator Program ‘5G In Remote Production’ [PDF] 

For limited time, the recording is available here.

The 3G4G Blog: LTE / 5G Broadcast Evolution - https://t.co/nMM6VvxGbg via @5Gxcast #3G4G5G #IEEE5G #5GIEEE #eMBMS #LTEBroadcast #MissionCriticalComms pic.twitter.com/aSxdsFkX9A

— 3G4G (@3g4gUK) August 29, 2019

The following is the description from session 2, on 2nd Dec 2020:

Join the CW Content Production and Delivery Group’s aspirational discussion of benefits of 5G for content production and distribution needs to be turned into operational reality.

There is no doubt 5G will enhance what is possible to be achieved with current mobile systems and the advantages to distribution and consumption are obvious through bigger pipes and enhanced agility to support ever evolving content and application platforms.

The possibilities for content production and acquisition are also exciting, but may be less obvious. 5G will allow service and capacity to be delivered where required through use of small cell and potentially highly localised private 5G networks, edge computing and support of a wide range of equipment and applications (not just those use cases directly involved in content acquisition).

Ian Wagdin, Senior Technology Transfer Manager, BBC R&D, '5G in Content Production, work in standards and deployments' - A look at what’s here and what’s coming and how 5G may impact broadcast workflows. [PDF]

Paola Sunna, Technology and Innovation Department, EBU, '5G for Content Production' - EBU perspective on 5G for professional content production and challenges/ambitions in the Horizon 2020 project 5G-RECORDS. [PDF] 

For limited time, the recording is available here.

A nice talk looking at 5G and Broadcast - 'BBC, 5G and me' by Ed King, Principal Architect, BBC at @TheIET #5GUnleashed 2020 conference - https://t.co/RtTIxZnvN4#Free5GTraining #eMBMS #5Gbroadcast pic.twitter.com/j0d6r7Xqeq

— 5G Training (@5Gtraining) March 6, 2020

Other Recent News / Articles / Videos on 4G/5G Broadcast:

• SoftBank Corp. Showcases 5G-powered Entertainment and Advanced Technologies at Pop Culture Complex (link)
• 5G TODAY: BAVARIA’S BROADCAST TRIALS (link)
• Webinar: The role of broadcast and multicast in 5G-TOURS: High-quality video services distribution (link)
• Delivering Media with 5G Technology: FeMBMS, 5G-Xcast and beyond (link)
• 5G TODAY: 5G Broadcast trial using FeMBMS (link)
• 5G Today: On the Road to 5G Broadcast (link)

Related Posts:

• The 3G4G Blog: LTE / 5G Broadcast Evolution
• The 3G4G Blog: 5G Dynamic Spectrum Sharing (DSS)
• The 3G4G Blog: Multicast Operation on Demand (MooD) and Service Continuity for eMBMS 

Top Videos on 3G4G YouTube Channel

We made quite a few videos last year for our YouTube channel. In fact we crossed over 10K subscribers last year. Here are couple of playlists, one for the Top 5 videos of 2020 and other is Top 10 videos of all time. Hopefully you like them and subscribe to our channel

Top 5 3G4G videos from 2020

Top 10 3G4G videos from all time

 Let us know which ones are your favourite.

Related Posts:

• The 3G4G Blog: Top 10 Posts for 2020 and Top 5 Videos
• Connectivity Technology Blog: Top 5 Posts for 2020
• Operator Watch Blog: Top 5 Posts for 2020
• Telecoms Infrastructure Blog: Top 5 Posts for 2020 

Top 10 Posts for 2020 and Top 5 Videos

Here are the posts, from most popular to the tenth most popular, in descending order of popularity 

1. 5G Dynamic Spectrum Sharing (DSS), May 2020

2. EPS Fallback in 5G Standalone Deployments, Feb 2020

3. How MOCN RAN-Sharing Works, Jan 2020

4. Prof. Andy Sutton: Backhauling the 5G Experience, Jan 2020

5. Key Technology Aspects of 5G Security by Rohde & Schwarz, July 2020

6. Positioning Techniques for 5G NR in 3GPP Release-16, Oct 2020

7. 5G Private and Non-Public Network (NPN), March 2020

8. A Look into 5G Virtual/Open RAN - Part 1, March 2020

9. Interfacing HSS and UDM in 5GS with UDICOM (a.k.a NU1 / Nhss), Sep 2020

10. NTT Docomo's Vision on 5G Evolution and 6G, Jan 2020

There was another post, in the top 5 but I have listed it below. It was an announcement about the Free 5G Training site we launched early this year.

Bonus post*: Free 5G Training, Jan 2020

In addition to the above, we have a very popular and active YouTube channel, here are the top 5 videos that we posted in 2020. 

1. Advanced: Private Networks & 5G Non-Public Networks

2. Intermediate: Vehicle to Everything (V2X) Introduction

3. Beginners: UICC & SIM

4. Part 6: Standalone and Non-Standalone 5G - 5G for Absolute Beginners

5. Beginners: Industry 4.0 & 5G

Related Posts:

• Connectivity Technology Blog: Top 5 Posts for 2020
• Operator Watch Blog: Top 5 Posts for 2020
• Telecoms Infrastructure Blog: Top 5 Posts for 2020 
• The 3G4G Blog: Top 10 posts for 2019
• The 3G4G Blog: Top 10 posts for 2018
• The 3G4G Blog: Top 10 posts for 2017 and some other 3G4G info