W2L? 5G - your entry point

5G runs in the 28GHz or 70GHz spectrum. But close to 70GHz run FSS Fixed Satellite Service and FS Fixed Service. Read here how they technically separate from this band

http//ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=7896555

After KASUMI (A5/3) in 3G and SNOW 3G in LTE there are several stream ciphers in discussion like Espresso and TDES for the NextGen MBB networks. A worth reading document by Mrs. Elena Dubrova about 5G stream ciphers and protocols.

https://www.sics.se/sites/default/files/pub/sics.se/SecurityDay16/elena_dubrova.pdf

Location Finding aka Positioning is based on OTDOA Observerd Time Difference Of Arrival. Learn here what factors are influencing the accuracy.

GDOP Geometric Dilution Of Prescision - a term you should learn

https://www.qualcomm.com/media/documents/files/otdoa-positioning-in-3gpp-lte.pdf

In 5G you can expect new factors. What factors can you imagine? Posting welcomed -)

Funtime for the weekend, see here

https://www.youtube.com/watch?time_continue=76&v=92563c3bqas

If you Want 2 Learn? Try to understand the handover process and units latency times to make this possible - you get a better picture of handover requests in general.

CA Carrier Aggregation and Spatial Streams from a past T-Mobile press release. See here

https://www.pcper.com/image/view/78837?return=node%2F67184

Can you fully explain these terms? Look here too

http//www.multicap.be/en/technology/mimo-and-spatial-streams

Multilateration for Cell Site Analysis CSA in 5G will be based of a Mobile Station will be connected to multiple Antennas WiFi, LTE and NR. Lets imagine 16 carriers aggregated. To understand the term CA Carrier Aggregation in-depth is important. See here from 3GPP the org who regulates all standards

http//www.3gpp.org/technologies/keywords-acronyms/101-carrier-aggregation-explained

ARM and its Cortex CPUs also found in Kirin processers (competing with Qualcomm and its Snapdragon processers) illustrates this issue best

http//www.5g-router.com/wp-content/uploads/2016/04/50-time-throughput-from-LTE-to-5G.png

URLLC - crack the abbreviation yourself -) - basis for automatic cars and com-critical applications (e.g. C2CA)

http//the-mobile-network.com/2017/11/urllc-liveblog/

D2D Device 2 Device in 5G e.g. for payments are important to understand. Learn here the protocol stack matching of D2D

https://www.researchgate.net/profile/Yejun_He/publication/273397762_Enabling_Device-to-Device_Communications_in_Millimeter-Wave_5G_Cellular_Networks/links/56938bf008aed0aed8179e81/Enabling-Device-to-Device-Communications-in-Millimeter-Wave-5G-Cellular-Networks.pdf

May ask yourself Can D2D traffic run below the radar? What criminal actions are possible in a local area may not reaching national lawful interception (by DPI)?

LAA Licensed Assisted Access (think of Unlicensed 5GHz WiFi Assistance)

https://www.qualcomm.com/sites/ember/files/styles/optimize/public/laa-evolution.png?itok=bWqRLZZx

is a term to know. See here Qualcomm slides

https://www.qualcomm.com/media/documents/files/deutsche-telekom-webinar-slides.pdf

The OnePlus 5T e.g. has a Snapdragon X16 modem inside its Snapdragon 835 which runs actually the fastest LTE modem in a phone (the Huawei Mate 10 Pro as a Phablet runs a LTE Cat 18 modem in its HiSilicon Kirin 970).

https://www.qualcomm.com/products/snapdragon/modems/4g-lte/x16

Try to fully understand the terms CA Carrier Aggregation, LAA Licensed Assisted Access, 2x2 vs 4x4 MIMO Multiple Input Multiple Output and SS Spatial Streams (best imaginable as separate RF ways in space).

Antennas know the mobiles well. They technically first observe the location, all signalling knows about the users capabilities and all traffic runs through their technical stomache. Hang-in here to learn new crumbs

https://www.slideshare.net/mobile/KarvaCarbi/antenna-evolution-from-4g-to-5g-70581361