1. IEEE 802.21 MEDIA INDEPENDENT HANDOVER DCN: 21-06-0570-00-0000 Title: Higher layer services and information IEs Date Submitted: March 2006 Authors or Source(s): Qiaobing Xie for Higher Layer Services and information IE ad-hoc Team Abstract: This document describes the background and meeting summary of 802.21 Higher Layer Services and information IE ad-hoc session (held on 2/14/06)

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3. Higher layer services and information IEs What we already have:  IP subnets (per PoA)  PoA capabilities bitmap (per PoA) Security Available (y/n) QoS Available (y/n) Internet Access Available (y/n) IP Version 4 supported (y/n) IP Version 6 supported (y/n) Emergency Services available (y/n) Others Newly proposed:  IP address configuration method supported (per PoA?)  Discussed. Need more clarification about the definition and use cases. No conclusion reached.  DHCP address (per PoA or per AN?)  Discussed. No conclusion reached about the necessity and usefulness of this IE. No conclusion about how to relate it to the current DHCP protocol.  AAA address (per PoA or per AN?) not discussed.  Others? Not discussed.  Chair agreed to continue the discussion at another ad-hoc at March f2f meeting

4. How to incorporate the new IEs (Option 1) Option 1: Add them in parallel to the existing IEs in Table 6 under per PoA higher layer services/info. For example: No Name of Information Element DescriptionRepresentation Length (octets) 4.3TYPE_IE_POA_IP _CONFIG_METH ODS IP address configuration method supported bitmap 4.4TYPE_IE_POA_ DHCP_ADDR DHCP addressIP address 4.5TYPE_IE_POA_ AAA_ADDR AAA addressIP address

5. How to incorporate the new IEs (Option 2a) Option 2a: Add them to the existing POA capabilities IE in Table 6 (of cause we no longer can use the bitmap representation): No Name of Information Element DescriptionRepresentation Length (octets) 4.2TYPE_IE_POA_ CAPABILITIES A list of PoA capabilities Security Available Y/N QoS Available Y/N Internet Access Available Y/N IP Version 4 supported Y/N IP Version 6 supported Y/N Emergency Services Y/N IP Address config methods bitmap DHCP address IP addr AAA address IP addr (Others) variable

6. How to incorporate the new IEs (Option 2b) Option 2b: Should there be an Access Network specific capabilities IE in Table 6? No Name of Information Element DescriptionRepresentation Length (octets) 2.7TYPE_IE_AN_ HIGH_LAYER_ CAPABILITIES A list of AN higher layer capabilities IP Address config methods bitmap DHCP address IP addr AAA address IP addr variable 4.2TYPE_IE_POA_ CAPABILITIES Bitmap of PoA capabilities Security Available Y/N QoS Available Y/N Internet Access Available Y/N IP Version 4 supported Y/N IP Version 6 supported Y/N Emergency Services Y/N (Others)