- 5G required because not only human machine also need to be connected like fridge , MW ,
parking lot, electricity meter …IoT
- Milimeter wave used 20G- 70Ghz
- Beam forming , antenna array , phase array used , antenna @ bts and at UE will become very
small and many in number
- The range will be very low because of 20Ghz , less than 100 m , so many tower
required(nano)
-
- In normal LTE below upto PHY layer it is in BBU(DU) and after that RF(L1 layer) in RRU
- Retransmitting the whole transport block could in this case become inefficient. NR therefore
supports retransmissions on a finer granularity known as code-block group (CBG). This can
also be useful when handling preemption.
- Given the very high data rates supported by NR, channel-coding data transmission is based
on low-density parity-check (LDPC) codes.
- Spectral efficiency is DL , 30 bits/s/hz uplink 10 bits/s/hz i.e. 3 times of lte
- Latency ~ 1 ms while in lte it is 10 ms
- Enhanced Mobile Broadband (eMBB)
- Massive Machine-type Communication (mMTC)
- Ultra-reliable and low-latency Communication (URLLC)- traffic , health sector
- IMT advance means lte , imt 2020 is 5G
- Network slicing
- The main idea of NFV is the decoupling of physical network equipment from the functions
that run on them
- ISG NFV community-Last set of NFV standards were released in August 2018 (Version 3.1.1).
- https://www.youtube.com/watch?v=yYIfSBQ9Ff8 functional split
- https://www.researchgate.net/publication/268195771_Towards_a_flexible_functional_split
_for_cloud-RAN_networks
- Beside bandwidth
requirements, also latency
requirements
- need to be fulfilled by the
backhaul for different
functional split
- options. Since 3GPP defines
many timers from the MAC
to the
- RRC layer, these values will
ultimately define the
maximum
- Beside bandwidth
requirements, also latency
requirements
- need to be fulfilled by the
backhaul for different
functional split
- options. Since 3GPP defines
many timers from the MAC
to the
- RRC layer, these values will
ultimately define the
maximum
-
-
https://www.youtube.com/watch?v=6Bc8Q8Zo740
Virtualized, Disaggregated 3GPP 5G RAN and Small Cells - Prasad Bhandaru, Cyient - ONF Connect 19
vRAN -> segregate user and control plane , and keep user plane close to antenna..
cPri(common public radio interface protocol) is always ON kind of protocol and exhaust too much
data , so we segregate pdcp to physical all layer in such a way so our baseband sitting at DU to
RRU the pipe shud draw minimum data
5g layers - https://www.youtube.com/watch?v=7Y0nilr44PA
STL nodeb O-RAN - https://www.opennetworking.org/wp-content/uploads/2019/09/5pm-Amit-
Kulkarni-Building-True-PODS-for-Next-Generation-RAN-Requirements.pdf
file:///C:/Users/david/Downloads/5pm-Amit-Kulkarni-Building-True-PODS-for-Next-Generation-
RAN-Requirements.pdf
radisys o-ran https://www.youtube.com/watch?v=BQXaVDPvuU0
Control plane of 4g and 5g is same , while in user/data plane SDAP is introduced
Huawei 5G o-ran good explain abt tradeoff between performance and latency
https://www-file.huawei.com/-/media/CORPORATE/PDF/mbb/cloud-ran-the-next-generation-
mobile-network-architecture.pdf?la=en
Network Slicing - https://www.huawei.com/minisite/hwmbbf16/insights/5G-Nework-Architecture-
Whitepaper-en.pdf
Bhowmick training 5 g overview
http://rfmw.em.keysight.com/wireless/helpfiles/89600B/WebHelp/Subsystems/lte/content/lte_ove
rview.htm
https://www.pcmag.com/encyclopedia/term/uldl-ratio
https://en.wikipedia.org/wiki/Maximum_length_sequence
https://www.sharetechnote.com/html/5G/5G_SS_Block.html
https://medium.com/5g-nr/ldpc-low-density-parity-check-code-8a4444153934
http://www.sharetechnote.com/html/5G/5G_CarrrierBandwidthPart.html
http://www.techplayon.com/5g-nr-reference-signals-dmrs-ptrssrs-and-csi-rs/
interfaces http://www.techplayon.com/5g-nr-interfaces-x2-xn-s1-ng-f1-and-e1-functions/
dual connectivity https://www.eventhelix.com/5G/non-standalone-access-en-dc/en-dc-secondary-
node-addition.pdf
for drb to qos sdap see below mapping rqi is non guaranteed bit rate
https://5g-tools.com/qos-for-5g-nr/
https://www.linkedin.com/pulse/learn-qos-5g-networks-paul-shepherd/
release 15 download from
https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx?
specificationId=3191
what is compute(ram/cpu)? Ns catalogue, vnf catalogue, nfv instances, resources, and all
interfaces?
