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Smart Communication Systems II (NFV (Terminologies (VNF Descriptor…
Smart Communication Systems II
NFV
Reference Architecture
Reference Points
Or-Vi
Vi-Vnfm
Or-Vnfm
Nf-Vi
Vi-Ha
Vn-Nf
Ve-Vnfm
Os-Ma
Se-Ma
Use Cases
Use Case 2
VNFaaS
Use Case 3
VNF-FG
Use Case 1
NFVIaaS
Terminologies
NFVI Point of Presence PoP
Life Cycle Management
Network Service NS
VNF Manager
NFV Infrastructure NFVI
VIM
Virtualized Network Function VNF
can be contain multiple VNFC (component)
each one is executed in a container
VNFC can have multiple subfunctions
SWA-2 (VNFC-VNFC) . Vendor Specific. logical . and uses SWA-5 interfaces
SWA-5 (VNF-NFVI)
Specialized Function
Storge
Generic Compute
Network I/O
SWA-1 (VNF-VNF)
VNFC Instances make up VNF Instance
No clue
VNF Design
single component
multiple component
VNF Scaling
Auto, rules in VNFD
On-Demand using EM, explicit request
VNF Component Reuse
turning VNFC into VNF by adding VNFD
VNF State and Transition
VNF D
Load Balancing
external load balancer
Internal load balancer
NFV Service
Network Function NF
VNF Descriptor
Behavior
Deployment Behavior -Resources
Operational Behavior - Lifecycle
each VNF is associated with exactly one VNF Diecriptor
VNF Forwarding Graph
NFV Orchestrator
3GPP Reference Architecture
EM : Element Manager
Last 3GPP Release --> 14
QoS Implementation
example of functional elements
EPS bearer QCI prameters
3 Enode B schedules UL/DL
5 UE filters Traffic to map it to bearers
3 PDN-GW maps bearers to transport QoS
PCEF map traffic to bearer
1 PCRF defines PCC rules
decoupling NF from Hardware
POC
Alcatel Lucent IP mobile core
E2E NFV
Automated Infrastructure Orchestration
OPENFV
Game Theory
Extensive Form Games
dynamic game- uncertainty -Probability for each strategy
you don't have utility, you have expected utility
Strategic Games
Nash equilibrium
can be more than one , or zero
if a player fixes his strategy, he cannot increase his payoff.
Component
Payoff (Utility Function)
Players
Set of Strategy Profile
Strategies
Pure Strategy
3 Users , 2 channels and more
Auctions
Auctioneers
Bidders
Forward Auctions -selling item, one buyer multiple bidders, Ebay
Reverse Auctions: buying item, multiple sellers, procurement
Comparision
Revenue : expected selling price
Efficiency: who values it the most gets it
Private Value : how much the bidders values the object. no bidder knows the valuation of the others
Correlated Value: part depends on own, part on others
Pure Common Value : onhy common info is publiclyknown but each bidder has a private value
English Auction
PROTOCOL: each bidder is free to raise his own bid, wehn no one else is willing to raise their bid, the highest bidder wins
correlated value : auctioneers increase prise at constant
open-exit: openly declare exit , no re-enter, others will know how much is his value
Strategy : series of bids F(private value, estimate of others , past bid )
BEST STRATEGY : always bid a small amount higher than the current bid, and stop when reaching the private valuee
Dutch Auction (Descending)
PROTOCOL: Auctioneers lower price
STRATEGY : F(private value, estimate of others)
BEST STRATEGY : Lying, probability of other's value, multiple rounds
First-Price Sealed
PROTOCOL: each submit without knowing the others, the highest wins
single round
STRATEGY: F(private value, estimation of others)
BEST STRATEGY : no dominated one
Vickrey (second-price sealed)
STRATEGY: F(private value, estimation of others)
like English,
PROTOCOL: Submit without knowing, pay second highest price
Best Strategy is to bid the true private value
