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voltee2e网络结构-信令流程.pdf

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VOLTE E2E Architecture,Call Flows
Wu jie- LTE NEA
July 24th, 2015
1 VoLTE Introduction
2 | Feature Validation | - L108258 - PCI Allocation Copyright © 2014 Alcatel-Lucent,
VoLTE Introduciton

LTE Typical Voice Solutions in LTE network

Non-typical Voice Solutions
VoLGA, IMS MSC, OTT, etc.
3 Copyright © 2014 Alcatel-Lucent,
VoLTE Introduciton
MORE SPECTRUM FOR LTE HELPS YOU:
VoLTE enables efficiency, unlike CSFB
more data, because you have more capacity

VoLTE FREES YOUR 2G/3G your existing spectrum
SPECTRUM FOR LTE DATA • Avoid spending USD$180M-$490M, which is
otherwise needed for spectrum purchases
supporting 50M subscribers in 10K sites

mobile data’s growth with more plentiful
LTE
• Far less costly to add LTE capacity than 3G
HSPA+
• Simplify operations by using an LTE overlay
• Puts you onto an easier path to LTE-Advanced
(avoid converged RAN complications)
You have more capacity for LTE data and can deliver higher quality voice at a lower cost, because LTE’s
spectral efficiency & VoLTE’s optimizations enable a

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