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8/12/2019 Network Control Scenarios
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IEEE 802.21 MEDIA INDEPENDENT HANDOVER
DCN:
Title: Network Controlled Network Selection and HOscenarios
Date Submitted: September, 2005
Presented at IEEE 802.21 session #NN in Orange County, CA
Authors or Source(s):
Srinivas Sreemanthula, Stefano Faccin
Abstract: Discuss network controlled scenarios
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IEEE 802.21 presentation release statements
This document has been prepared to assist the IEEE 802.21 Working Group. Itis offered as a basis for discussion and is not binding on the contributingindividual(s) or organization(s). The material in this document is subject tochange in form and content after further study. The contributor(s) reserve(s)the right to add, amend or withdraw material contained herein.
The contributor grants a free, irrevocable license to the IEEE to incorporatematerial contained in this contribution, and any modifications thereof, in thecreation of an IEEE Standards publication; to copyright in the IEEEs nameany IEEE Standards publication even though it may include portions of thiscontribution; and at the IEEEs sole discretion to permit others to reproduce inwhole or in part the resulting IEEE Standards publication. The contributor alsoacknowledges and accepts that this contribution may be made public by IEEE802.21.
The contributor is familiar with IEEE patent policy, as outlined in Section 6.3of the IEEE-SA Standards Board Operations Manual and inUnderstanding Patent Issues During IEEE Standards Developmenthttp://standards.ieee.org/board/pat/guide.html>
http://standards.ieee.org/guides/opman/sect6.htmlhttp://standards.ieee.org/guides/opman/sect6.htmlhttp://standards.ieee.org/board/pat/guide.htmlhttp://standards.ieee.org/board/pat/guide.htmlhttp://standards.ieee.org/board/pat/guide.htmlhttp://standards.ieee.org/board/pat/guide.htmlhttp://standards.ieee.org/board/pat/guide.htmlhttp://standards.ieee.org/board/pat/guide.htmlhttp://standards.ieee.org/board/pat/guide.htmlhttp://standards.ieee.org/board/pat/guide.htmlhttp://standards.ieee.org/board/pat/guide.htmlhttp://standards.ieee.org/board/pat/guide.htmlhttp://standards.ieee.org/guides/opman/sect6.htmlhttp://standards.ieee.org/guides/opman/sect6.htmlhttp://standards.ieee.org/guides/opman/sect6.htmlhttp://standards.ieee.org/guides/opman/sect6.htmlhttp://standards.ieee.org/guides/opman/sect6.htmlhttp://standards.ieee.org/guides/opman/sect6.htmlhttp://standards.ieee.org/guides/opman/sect6.htmlhttp://standards.ieee.org/guides/opman/sect6.htmlhttp://standards.ieee.org/guides/opman/sect6.htmlhttp://standards.ieee.org/guides/opman/sect6.htmlhttp://standards.ieee.org/guides/opman/sect6.htmlhttp://standards.ieee.org/guides/opman/sect6.htmlhttp://standards.ieee.org/guides/opman/sect6.htmlhttp://standards.ieee.org/guides/opman/sect6.htmlhttp://standards.ieee.org/guides/opman/sect6.htmlhttp://standards.ieee.org/guides/opman/sect6.htmlhttp://standards.ieee.org/guides/opman/sect6.htmlhttp://standards.ieee.org/guides/opman/sect6.htmlhttp://standards.ieee.org/guides/opman/sect6.htmlhttp://standards.ieee.org/guides/opman/sect6.htmlhttp://standards.ieee.org/guides/opman/sect6.html8/12/2019 Network Control Scenarios
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Introduction
802.21 aids in inter-technology handover with various usage
scenarios in mind It is also important for 802.21 to provide tools for cellular and
other operators to exercise network control to inter-work andmaximize the resource pool in other access networks
This slide set presents network controlled usage scenarios forInter-technology network selection and HO control as a means tounderstand the importance of such use cases
This is for informational purposes only that can be used to verify
these scenarios are indeed covered under 802.21
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802.21 vs Current 3GPP Mechanisms
Access Control/ Network selection:
Currently core functionality of 3GPP networks It is in the interest of several 3GPP parties in keeping access control between
3GPP (access) networks under its control This can be achieved while introducing enablers for seamless inter-technology
mobility using 802.21 802.21 focuses on aiding heterogeneous handoff (I.e. inter-technology handoff
e.g. 3GPP-802.11, 802.11-802.16, etc.) The only intra-technology handoff in scope is inter-subnet/inter-domain handoff for 802.11,
simply because 802.11 does not define it 3GPP/PP2 and 802.16 have their own access selection mechanisms for homogeneous
handoff, and 802.21 does not intend to interfere with that
3GPP-WLAN IW: current Network Selection mechanisms
Based on policies and information stored in UE (SIM) Based on information collected from UE Network has no active role at moment of selection Issue: cumbersome mechanism, requires connecting to a network to decide
whether to connect to the network
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802.21 Usage Scenarios for 3GPP
A set of example access system selection scenarios to describe
what can be achieved with 802.21
Scenarios using 802.21 service are split between twodimensions
Network Selection & Handover control
Terminology 3G-PDN: indicates the whole network (including AN and
core network, i.e. up to point where UE gets IP connectivity) MME: Mobility Management Entity
Its a network entity sitting above current 3GPP access (e.g. locatedafter the ISN) in charge of making connectivity decision for networkcontrolled handoff.
MME may incorporate an instance of MIHF
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Usage Scenarios for 3G Cellular Network -> IEEE 802.xScenario-A: 3G network is MIH unaware
Scenario-A) MIH unaware serving network (3G),
Emphasis is on enabling network handoff control by home network or thirdparty (e.g. enterprise)
Examples are Visited 3G network not 802.21 aware (no 802.21 specific functions in 3G network)
Visited 3G network has no active control over vertical HO decisions Home network or 3rd party controls the network selection and HO decisions (IS, ES and CS
used)
Visited3G-PDN
GERANUTRAN WiMAXPDN
802.16-AN802.11-AN
Internet
MIHFNW MIHFNW
Current active connection
Access
to MIHF (IS) over L3
Home Network
MIHFNW
Access to MIHF
(IS/ES/CS) over L 3
UE
MIHFUE
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Usage Scenarios for 3G Cellular Network -> IEEE 802.xScenario-B: 3G network is MIH aware, provides IS, ES & CS
Scenario-B) MIH services provided by serving network (3G),
Emphasis is on enabling network handoff control by network operator (e.g.home) to target access owned by the same operator
Examples are Operator owning multiple access technologies and user belongs to this network Operator has roaming agreements to cover multiple accesses for users from other networks
3G network can control network selection and HO decisions at MME
Home3G-PDN
GERANUTRAN WiMAXPDN
802.16-AN802.11-AN
Internet
Current active connection
Access to MIHF over L3
UE
MIHFUE
MIHFNW MME
Note: MIHF can be physicallyimplemented as a set of MIHF.MME can be more or lesscentralized
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Usage Scenarios for 3G Cellular Network -> IEEE 802.xScenario-C: 3G network proxies MIH IS services, provides ES and CS
Scenario-C) MIH IS services proxied by serving network (3G)
Emphasis is on enabling network handoff control by network operator (e.g. home) totarget accessed owned by roaming partners Proxy is to access IS from other networks Examples are
Operator has no agreements to cover multiple accesses for roaming users
3G network controls vertical HO decisions
Home3G-PDN
GERANUTRAN WiMAXPDN
802.16-AN802.11-AN
Internet
MIHFNW
Current active connection
MIHFNW
MIHFNW
UE
MIHFUE
Access to
MIHF IS over
L3
Access to
MIHF IS over
L3
Access to
MIHF IS , ES
and CS over L3
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NW Initiated NW Selection for Scenario-B3G->802.x: 3G provides all MIH services
Scan(802.11)
MAC Layers
Beacon
3G-PDN MME 802.16-AN 802.11-ANMIHFUEMIH User
UE
MIH-Register-Events.Req
DL-Burst*
Link-Detect
MIH-Info.Resp
MIH-Link-Event.Detect(link_info)
MIH-Info.Req
Link-Detect
802.11-AN
Beacon
MIHFNW MIHFNW(IS)
MIH-Register-Event.Resp()
Link-Event.Detect(link_info)
Network Operator
Link-Event.Detect(link_info)
MIH-Register-Event.Req()
MIH-Register-Events.Resp
MIH-Info.Resp
MIH-Link-Event.Detect(link_info)
MIH-Info.Req
UnfavorableNetwork
Favorable
Network =>Selection
UE Discovery and attachment
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NW Initiated NW Selection for Scenario-C3G->802.x: 3G provides ES/CS services and can proxy IS services
MAC Layers
Beacon
3G-PDN MMEMIHFUEMIH user
UE
MIH-Register-Events.Req
DL-Burst*
Link-Detect
MIHFNW MIHFNW(IS)
MIH-Register-Event.Resp()
Network Operator
Link-Event.Detect(link_info)
MIH-Register-Event.Req()
MIH-Register-Events.Resp
MIH-Link-Event.Detect(link_info)
802.11 Network
802.11-AN MIHFNW(IS)
802.16 Network
MIHFNW(IS)802.16-AN
Link-Detect
Link-Event.Detect(link_info)
MIH-Link-Event.Detect(link_info)
MIH-Info.ReqMIH-Info-Req()
MIH-Info-Resp(nwk_info)
MIH-Info.Resp
MIH-Info-Req()
MIH-Info-Resp(nwk_info)
FavorableNetwork =>Selection
Just one Link Eventmay be generated,
eporting both events
Proxying: MME in operator networkqueries the MIHF in other networksbased on the report from the UE.
UE Discovery and attachment
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NW Controlled HO for Scenarios B&C3G ->802.x. HO Control in 3G with MIH ES/CS services
3G-MM 3G-PDNMIHFUE
UE
Mobile-IP
Operator Network
HA
802.11 Network
New-FA802.11-AN
MIH-Link-Switch.Req(802.11 nwk)
MIH-Remote-Link-Switch.Req(802.11 nwk)
L2-Procedures (Security, Re-association, QoS Neg.)
Link-Event-Down(3G)
Link-Event-Up(802.11 nwk)
MIH-Link-Event-Up
Registration-Req
Registration-Resp
Registration-Req
Registration-Resp
MIP-switch.Ind
802.11 MAC
MIH-Remote-Link-Switch.Resp
L2-PDP-Cntxt-Rel(3G GMM)
MIH-Link-Event-Down
3G-PDP-Rel()
Previously happened
Mobile-IP Tunneling
Mobile-IP SignalingNon-MIH (I.e.Implementationdependent)
Legenda
MMEMIHFNW
MIH-Link-Switch.Resp(802.11 nwk)
NetworkSelection
MIH-switch.req
Link-Associate
MIH-switch.resp