1. IEEE 802.21 MEDIA INDEPENDENT HANDOVER DCN: 21-10-0118-00-srho
Title: Additional Information Elements for SRHO
Date Submitted: July 16, 2010
Presented at IEEE c Conference Call
Authors or Source(s):
Hongseok Jeon, Junghoon Jee, Changmin Park, Yoon-Young An (ETRI)
Abstract: This contribution presents additional Information Elements required for single radio handover.

2. IEEE 802.21 presentation release statements
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The contributor is familiar with IEEE patent policy, as stated in Section 6 of the IEEE-SA Standards Board bylaws < and in Understanding Patent Issues During IEEE Standards Development

3. Overview
The information service in IEEE provides information about access networks and PoAs within a geographical area to facilitate network selection and handovers.
Information Elements (IEs) are defined to carry the information.
Additional IEs would be required to facilitate SRHO.
SRHO capability
SFF information …

4. SRHO Capability Way to expand existing “IE_NET_CAPABILITIES”
IE_NET_CAPABILITIES has NET_CAPS as its data type.
NET_CAPS has defined 10 bitmap values (Bit 0 ~ Bit 9).
New additional bitmap value: Bit 10: SRHO Capability – Indicates that SRHO is supported when set; Otherwise. no SRHO support is available.
Way to define a new IE under access network specific information elements
“IE_NET_SRHO_NETWORK”
Description: Indictor whether the access network itself supports SRHO.
Data type: BOOLEAN

5. SFF Information Way to create a new container for SFF.
New container: SFF-specific information elements
New IEs under the SFF-specific information elements
IE_SFF_IP_ADDR: IP address of SFF (Data type: IP_ADDR)
IE_SFF_TUNN_MGMT_PRTO: Type of tunnel management protocol supported. (Data type: IP_TUNN_MGMT)
IE_SFF_FQDN: FQDN of SFF (Data type: FQDN) …
IP_TUNN_MGMT: IPSec, IP in IP, GRE, …

6. Further IEs for SRHO IEs for Roaming Policy Anything else?
Policy is out of scope in the current IEEE Std
Do we have to define IEs for roaming policy?
If so, which IEs are available for the roaming policy?
network preference …
Anything else?

7. Conclusions
Information service is necessary for network discovery and handover selection in SRHO.
Additional IEs are required for SRHO.
SRHO Capability
SFF Information
Other additional IEs for SRHO would be further included.