1. IEEE 802.21 MEDIA INDEPENDENT HANDOVER
DCN: srho
Title: Discussion about PoA parameter in TLV Query
Date Submitted: July 22, 2010
Presented at IEEE c Teleconference
Authors or Source(s):
 Hongseok Jeon (ETRI)
Abstract: Discussion about PoA parameter in TLV Query so that whereby IS retrieves information on the SFF specific to given query.

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3. Background
New Information Elements for SFF addressing were presented in 21-10/131r2 (IEEE c Proposal).
IE_SFF_IP_ADDR
IE_SFF_FQDN
Two issues were raised:
Issue 1: IE_SFF_IP_ADDR and IE_SFF_FQDN provides same information. Which is more valuable?
Issue 2: SFF has no physical location information. How can Information Server provide information about the SFF suitable for given query?
Meeting Conclusion:
IE_SFF_FQDN was adopted and IE_SFF_IP_ADDR was removed.
The optional parameters in a TLV query can be useful for IS to respond with suitable SFF FQDN matching the preferred networks and the roaming partner of the current serving network (NET_TYPE_INC, NETWK_INC).

4. More Discussion on Issue 2
We need a more detailed information than NET_TYPE_INC and NETWK_INC.
Given Network Type and Network ID can provide information on multiple SFFs than a specific SFF suitable to a querier.
Specific PoA can be a meaningful parameter in the TLV query whereby IS retrieves information on the SFF specific to given query.
POA_INC: Specific PoA the queirier wants to include in the query response.
BASE_ID
AP_ID (not existing)
CELL_ID