Transcript LB #1 Comment Summary

IEEE 802.21 MEDIA INDEPENDENT HANDOVER
DCN: 21-08-0145-00-0000
Title: 3GPP Update
Date Submitted: May, 2008
Presented at IEEE 802.21 session #26, Jacksonville
Authors or Source(s):
Vivek Gupta
Abstract: Update of activities in 3GPP related to 802.21
1
IEEE 802.21 presentation release statements
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2
Other Presentations
• 21-07-0274-00-0000_3gpp_inter-tech_handover
• (July 2007)
• Qiaobing Xie et al
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3GPP Specs of Interest
• SA2-SAE
•
•
•
•
•
TR 23.882 : 3GPP System Architecture Evolution: Report on Technical Options and
Conclusions
TS 23.401 : Technical Specification Group Services and System Aspects; GPRS
enhancements for E-UTRAN access
TS 23.402 : 3GPP System Architecture Evolution: Architecture Enhancements for non3GPP accesses;
TR 22.937 : Requirements for seamless roaming and service continuity between mobile and
Wireless Local Area Network (WLAN) networks
TS 22.278 : Service requirements for evolution of the 3GPP system (Mobility Mgmt
Requirements)
• RAN2
•
•
CT1
•
•
•
TR 36.938 : Improved Network Controlled Mobility between E-UTRAN and 3GPP2/Mobile
WiMAX Radio Technologies
TS 24.301 : Non-Access-Stratum (NAS) protocol for Evolved Packet System (EPS);
TS 24.302 : Access to the 3GPP Evolved Packet Core (EPC) via non-3GPP access
networks ;
TS 24.303 : Mobility management based on Dual-Stack Mobile IPv6;
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SA2-SAE Contributions (May 08)
S2-083562
23.402 CR0174R1:
Clarifications on the
information provided
by ANDSF
Motorola,
InterDigital
Summary of change: With the proposed changes it is clarified that: - The ANDSF can
provide (i) inter-system mobility policies and (ii) information about neighbor access
networks (access discovery info) - These two pieces of information are independent: It is
possible for the ANDSF to provide only inter-system mobility policies and no access
network discovery information (or, vice versa) - The access discovery info is used for
providing information about available access networks but not for selecting an access
network (selection is done only through policies). - The inter-system mobility policies
provide a) rules to indicate when inter-system mobility is restricted and b) rules used by
the UE to select the most preferable access network. The rules for access network
selection can be used to enable network steering of UE access, as per current
requirements in TS 22.278.
S2-083563
23.402 CR0175R1:
ANDSF - Removal of
editor's note about
privacy
Motorola,
InterDigital
Summary of change: Removal of the editor's note stating that privacy issues raised by the
inclusion of UE's location in the Access Network Info Request are FFS.
S2-083564
23.402 CR0215R1:
Update of general
principles for WiMAX
network-controlled
dual radio handover
Motorola
Summary of change: A set of principles are added for network-controlled dual radio
handover between 3GPP accesses and mobile WiMAX in order to align it with the general
principles and concepts in clause 4.8. Several clarifications are also provided which are
applicable to the specific case of WiMAX/3GPP dual radio handover.
S2-083622
23.402 CR0308:
ANDSF Discovery in
the 3GPP Access
CATT
Summary of change: If 3GPP Access is selected by the UE, the ANDSF address can be
delivered to the UE in the PCO.
S2-083670
23.402 CR0219R1:
WiMAX-specific NDS
policies and
information
Nextwave
Summary of change: Introduces the specific to WiMAX Network Discovery and Section
policies and information
S2-083671
Frequency and
conditions for
triggering ND&S
Nextwave,
Intel
This discussion paper proposes certain clarifications for the frequency and conditions that
ND&S should be applied
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SA2-SAE Contributions (May 08)
S2083760
23.402 CR0319: ANDSF Handling of editor's notes
Motorola
Summary of change: It is proposed to deleted the following Editor's notes: o Editor's Note: The relation of
the ANDSF to other EPS functions is FFS. It has been agreed that "The ANDSF in the subscriber's home
operator network may interact with other databases such as the HSS user profile information residing in
subscriber's home operator network. Details of such interaction with these databases are not described in
this release of the specifications." So, this editor's note can be deleted. o Editor's Note: It is FFS what kind
of policies in the UE can be used for ANDSF discovery. It has been agreed that "The ANDSF that directly
interacts with the UE is located in the subscriber's home operator network." So, in Rel-8 the UE does not
need any policies to decide whether to contact a vANDSF or hANDSF. So, this editor's note can be deleted.
o Editor's Note: It is FFS how ANDSF discovery can be performed regardless of the PDN(s) that the UE is
connected to. When the UE is using a PDN-GW in the VPLMN, the discovery of and access to an ANDSF in
the HPLMN should be possible. This can be achieved with appropriate network configuration or by
establishing connectivity with an additional PDN-GW in the HPLMN (if supported by the current access
network). With this assumption, this editor's note can also be removed. o Editor's note: It is FFS if the
ANDSF can request and retrieve the current UE's location. No major requirements have been identified so
far that require the ANDSF to retrieve the UE's location. It is assumed that the UE provides its current
location (e.g. a cell-ID) and requests policies and discovery info from the ANDSF. So, this editor's note can
be deleted.
S2083761
23.402 CR0320: Access
network discovery
information
Motorola
Summary of change: Specifies that the access network discovery information shall be able to include o one
or more carrier frequencies o validity conditions, i.e. conditions indicating when the provided access network
information is valid. Such conditions may include e.g. a location area. The validity conditions may also
indicate when the UE shall request for new access network information. The Validity conditions for intersystem mobility policies (approved in CR 0173r3, S2-083107) and the Validity conditions for access network
discovery (introduced by this CR) can provide the appropriate triggers for the UE to initiate ANDS
procedures. So the Editor's note in section 8.5.1 is deleted.
S2083392
23.402 CR0278: Limitation
of the frequency of UE
requested ANDSF
interactions
Ericsson
Summary of change: Addition of a minimum time interval between two consecutive UE initiated requests
towards the ANDSF.
S2083758
23.402 (ANDSF Network
Location)
Intel
Provide information about network location from ANDSF
S2083393
23.402 CR0165R6:
Addition of description of
inter-system mobility
policies
Qualcom
m Europe
Summary of change: A new section is added to describe the inter-system mobility
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CT1 Contributions (May 08)
C1-082074
24.302
ANDSF
Discovery
Vodafone,
Intel,
Huawei
General concepts of ANDSF Discovery using DNS and
DHCP
C1-082066
24.302
ANDSF
Interactions
Intel,
Samsung
General concepts of ANDSF Interactions between UE
and ANDSF
C1-082067
24.302
ANDSF
Flows
Intel
Samsung
Flow diagrams for Network Discovery and Selection
using ANDSF
C1-081709
24.302
ANDSF
Protocol
Telcordia
Protocol selection for communication between UE and
ANDSF
C1-081697
INTRO
Intel,
Telcordia
Introduction to MIH Protocol
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C1-082074 (Vodafone, Intel et al)
•
•
•
•
•
6.8.1
General
In order to assist the UE with performing access network discovery and selection, a set of
information needs to be provided to the UE. This information contains the access network
discovery and selection information to assist the UE with selecting the access network, and/or the
inter-system mobility policy to control and assist the UE with performing the inter-system
change.
This set of information can either be provisioned in the UE by the home operator, or provided to
the UE by the ANDSF over the S14 reference point via pull or push mechanisms as defined in
3GPP TS 23.402 [4] by means of the access network discovery and selection procedures as
described in subclause 6.8.2.
The ANDSF is located in the subscriber's home operator network. The ANDSF can provide
assistance information at any time to the UE. Also, the UE can send a request to the ANDSF in
order to get assistance information for access network discovery and selection.
The domain name or the IP address of the ANDSF can be provisioned in the UE by the home
operator. The domain name or the IP address of the ANDSF can also be discovered by the UE by
means of the DHCP query as specified in draft-ietf-mipshop-mos-dhcp-options [yy]. The ANDSF
IP address, the port and the transport protocol by which the UE can contact the ANDSF can be
obtained by the UE as described in draft-ietf-mipshop-mos-dns-discovery [xx].
•
Editor's note:
When a UE is roaming, how the UE's location can be obtained by the ANDSF in
order to provide the corresponding information to that UE is FFS.
•
Editor's note:
•
Editor's note:
It is FFS how the UE can avoid the ping-ponging due to performing the intersystem changes based on the information provided by the ANDSF.
•
Editor’s note: It is FFS how ANDSF performs the access control (i.e., user authentication and
authorization) to access network discovery information and limit the amount of information delivered to
the UE.
The granularity of the UE's location that the UE provides to the ANDSF is FFS.
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3GPP
Access
UE
Non-3GPP
Access
ANDSF
1. UE connected to 3GPP Access
2. Inter-System Mobility
Policy pre-provisioned in UE
ANDSF
Discovery
3. ANDSF Discovery
3a.Domain name discovery
3b.IP Address, port, transport
discovery
ANDSF Flow
4. Inter-System Mobility Policy Update
Policy
Update
5. Evaluate non-3GPP
access networks for HO
6. Access Network Information Request
7. Access Network Information
Response
8. Turn ON non-3GPP radio
and check availability of
non-3GPP access network
Access
Network
Discovery
Network
Selection
9. Network Selection
and HO Decision
10. Inter-system change Procedure
Intersystem
change
Procedure
9