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You're reading from  Mastering 5G Network Design, Implementation, and Operations

Product typeBook
Published inJun 2023
PublisherPackt
ISBN-139781838980108
Edition1st Edition
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Authors (3):
Shyam Varan Nath
Shyam Varan Nath
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Shyam Varan Nath

Specialist Leader - AI & Analytics, Deloitte
Read more about Shyam Varan Nath

Ananya Simlai
Ananya Simlai
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Ananya Simlai

Ananya Simlai is a Solutions Architect with primary focus on Wireless- 4G-5G Mobility Networks, Cloud Native and NFVI, she is a Trusted Advisor for service providers helping them address their technological challenges thereby enabling them to smoothly transition across technologies like 4G- 5G. She has been a speaker on 5G on international forums and also interacts with CTO teams to design their 5G story. She has published multiple papers on 5G and holds granted patents. She has been instrumental in designing, implementing and successfully rolling out one of the largest 5G mobile networks in the globe. She is currently working as an architect in Google and has previously worked in Vmware, Cisco, Altiostar Networks and Starent Networks.
Read more about Ananya Simlai

Oğuzhan Kara
Oğuzhan Kara
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Oğuzhan Kara

Oğuzhan Kara is a microelectronics engineer with 12 years of mobile technologies experience including 5G NR, VoLTE, LTE-A, O-RAN, IoT, AI and autonomous systems. He is an expert in Radio Access Network (RAN) design and network optimization. He worked as consultant for different mobile network operators such that AT&T, Partner (f.k.a. Orange in Israel), Hot Mobile, and Yota. In 2021, he founded his own telecommunications consultancy company based in London, UK and he is currently providing 5G consultancy services to Qualcomm and Vodafone.
Read more about Oğuzhan Kara

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5G NSA – option 3 call flows

In this section, we will dig into details of the call flow of 5G UE connected to an option 3x-based NSA network. Let us go over the initial registration call flow step by step:

Figure 10.8 – Option 3x call flow part 1

Figure 10.8 – Option 3x call flow part 1

  1. Consider DC-capable UE that moves into the coverage area of a 5G NR radio; the UE sends an Attach Request message to the master eNB, and the Packet Data Network (PDN) connectivity request has a UE Network Capability field with a Dual-Connectivity with New Radio (DCNR) flag on.
  2. Since all signaling is handled by the master eNB, it sends the S1 initial UE message to the Mobility Management Entity (MME), which contains the Attach Request and PDN Connectivity Request with the DCNR bit on.
  3. After a successful authentication procedure, a Diameter Update Location Answer message is sent to the Home Subscriber Server (HSS) by the MME. This message contains the NR as Secondary RAT field, which indicates...
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Mastering 5G Network Design, Implementation, and Operations
Published in: Jun 2023Publisher: PacktISBN-13: 9781838980108

Authors (3)

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Shyam Varan Nath

Specialist Leader - AI & Analytics, Deloitte
Read more about Shyam Varan Nath

author image
Ananya Simlai

Ananya Simlai is a Solutions Architect with primary focus on Wireless- 4G-5G Mobility Networks, Cloud Native and NFVI, she is a Trusted Advisor for service providers helping them address their technological challenges thereby enabling them to smoothly transition across technologies like 4G- 5G. She has been a speaker on 5G on international forums and also interacts with CTO teams to design their 5G story. She has published multiple papers on 5G and holds granted patents. She has been instrumental in designing, implementing and successfully rolling out one of the largest 5G mobile networks in the globe. She is currently working as an architect in Google and has previously worked in Vmware, Cisco, Altiostar Networks and Starent Networks.
Read more about Ananya Simlai

author image
Oğuzhan Kara

Oğuzhan Kara is a microelectronics engineer with 12 years of mobile technologies experience including 5G NR, VoLTE, LTE-A, O-RAN, IoT, AI and autonomous systems. He is an expert in Radio Access Network (RAN) design and network optimization. He worked as consultant for different mobile network operators such that AT&T, Partner (f.k.a. Orange in Israel), Hot Mobile, and Yota. In 2021, he founded his own telecommunications consultancy company based in London, UK and he is currently providing 5G consultancy services to Qualcomm and Vodafone.
Read more about Oğuzhan Kara