Transcript 21-06-0511-01-0000-indication-ipaddress-conf

• IEEE 802.21 MEDIA INDEPENDENT HANDOVER
• DCN: 21-06-0511-01-0000-indication-ipaddress-conf
• Title: Information for IP Address Configuration Method
• Date Submitted: Jan. 15. 2006
• Presented at IEEE 802.21 session #12 in Hawaii
• Authors or Source(s):
Soohong Daniel Park, Xiaoyu Liu, SAMSUNG
Eunah Kim, Junghoon Jee, ETRI
• Abstract: This document proposes a new information which
enables a mobile terminal to prepare its IPv6 address
configuration method either stateless or stateful manner.
DCN: 21-06-0511-01-0000-indication-ipaddress-conf
Soohong Daniel Park, SAMSUNG Electronics.
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DCN: 21-06-0511-01-0000-indication-ipaddress-conf
Soohong Daniel Park, SAMSUNG Electronics.
Overview
• MIH Function enables a mobile terminal to discover mobile terminal’s
network address related information before handover.
• Several address configuration methods are available for both IPv4
and IPv6 mobile terminal to configure its address.

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
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Static IPv4 address manually
Dynamic IPv4 address configuration (using DHCPv4)
Stateless IPv6 address configuration (using RFC2461)
Stateful IPv6 address configuration (using DHCPv6)
etc...
• If the IP mobile terminal recognizes its address configuration method
before handover, it would be a useful information to prepare its
address configuration.



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DHCP Discover for DHCPv4
RS/RA exchange for Stateless Auto-Configuration
DHCP Solicit for DHCPv6
No message for address configuration
DCN: 21-06-0511-01-0000-indication-ipaddress-conf
Soohong Daniel Park, SAMSUNG Electronics.
IP Address Configuration
• IPv4 address can be typically configured by either
DHCPv4 or static method.

DHCPv4 is dominant method than static when in motion.
• IPv6 address can be configured by either stateless
method or stateful method.


Stateless method: RFC2461
Stateful method: RFC3315 (DHCPv6)
• IPv6 Prefix is not mandate for all router
• If no prefix
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
Don’t need to do a stateless configuration. (RS/RA exchange)
Rather, a mobile node should send a DHCPv6 DISCOVER
message to obtain its IPv6 address.
• Stateful IPv6 configuration regardless of prefix

Admin manageable IPv6 allocation
DCN: 21-06-0511-01-0000-indication-ipaddress-conf
Soohong Daniel Park, SAMSUNG Electronics.
Approaches
• Adding a new item into MIH_SAP Primitives


MIH_Handover_Initiate.request (Section 7.4.10.1)
MIH_Handover_Initiate.response (Section 7.4.10.2)
• Adding a new item into MIIS Information Elements

Higher Layer Information Services (Section 6.3.2)
DCN: 21-06-0511-01-0000-indication-ipaddress-conf
Soohong Daniel Park, SAMSUNG Electronics.
Proposal (Cont’d)
• Adding a new item to the MIH_Handover_Initiate (Section
7.4.10)
MIH_Handover_Initiate.request/response

MIH_Handover_Initiate.request (Section 7.4.10.1)
Name
Type
Valid Range
Description
CommandSource
UPPER_LAYER_TYPE
N/A
…
…
…
…
…
IPv6AddrConfState
IPv6 Stateless
N/A
This requests the IPv6 address configuration
method of new network to which handover needs to
be initiated. This is valid only for remote commands
as well as IPv6.
IPv6 Stateful (DHCPv6)
DCN: 21-06-0511-01-0000-indication-ipaddress-conf
Soohong Daniel Park, SAMSUNG Electronics.
Proposal (Cont’d)
MIH_Handover_Initiate.response (Section 7.4.10.2)
Name
Type
Valid Range
Description
CommandSource
UPPER_LAYER_TYPE
N/A
…
…
…
…
…
IPv6AddrConfState
IPv6 Stateless
IPv6 Stateful (DHCPv6)
This identifies the IPv6 address configuration method
of new network to which handover needs to be
initiated. This is valid only for remote commands as
well as IPv6.
0: IPv6 stateless address configuration
1: IPv6 stateful address configuration (DHCPv6)
2: IPv6 manual configuration
3: N/A or reserved
DCN: 21-06-0511-01-0000-indication-ipaddress-conf
Soohong Daniel Park, SAMSUNG Electronics.
Proposal (Cont’d)
• Adding a new element into the MIIS Elements

Higher Layer Information Services (Table 6 of Section 6.3.2)
Table 6-Higher Layer Information Services
Name of Information
Element
Description
Media
Types
Comments
…
…
…
…
IPv6 Address Configuration
Method
IPv6 address configuration
method supported by the new
network: Stateless IPv6
Address Configuration, Stateful
IPv6 Address Configuration
(DHCPv6), or IPv6 Manual
Configuration.
N/A
DCN: 21-06-0511-01-0000-indication-ipaddress-conf
802.21 specific methods, e.g., a new
flag, query/response.
Soohong Daniel Park, SAMSUNG Electronics.
Proposal
Prefix available
(supporting stateless configuration)
Upper Layers (L3 and above)
Preparing DHCPv6
Preparing RS
MIH Function
Peer Stack
MIH Function
Prefix non-available
(supporting DHCPv6 configuration)
Local Stack
MIH Function
Peer Stack
DCN: 21-06-0511-01-0000-indication-ipaddress-conf
Soohong Daniel Park, SAMSUNG Electronics.