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Information Elements No Name of Description Representation Length Information (octets) Element General Information Elements 1.1 TYPE_IE_LIST_ List of Neighboring Access For example, RADIUS NAS-Port-Type 4 OF_NETWORKS Networks. attribute value which is a unique identifier defined in http://www.iana.org/ Link types of the networks assignments/radius-types, e.g., that are available in a given 15: Ethernet geographical area 18: Wireless - Other 19: Wireless - IEEE 802.11 22: Wireless - CDMA2000 23: Wireless - UMTS 24: Wireless - 1X-EV etc. 1.2 TYPE_IE_NUMB Number of distinct If networks of same link type have different 4 ER_OF_OPERAT operators for each avail- operators then they are classified as ORS able link type. different networks. Thus there may be three There maybe multiple different 802.11 networks in an area, each operators for each link supported by a different operator type. 1.3 TYPE_IE_LIST_ Network Operator List for Variable OF_OPERATORS each type of link. 1.4 1.5 1.6 1.7 This includes the list of network operators for each of the access networks. TYPE_IE_NETWOR Capabilities of the access For example, if access networks allow VPN Variable K_CAPABILITIES networks services, proxy mobile IP servies, link level security, P2P services, etc TYPE_IE_OPER Network Operator RADIUS Operator-Name attribute defied in Variable ATOR_IDENTIFI draft-ietf-geoprivradius-lo- 05.txt. ER The operator of a network. TYPE_IE_ROAM Roaming Partners. Each operator has the same structure as Variable ING_PARTNERS Network Operator information element. Operators with which the current network operator has direct roaming agreements. TYPE_IE_COST Cost Should include the following: Variable Indication of cost for Value: (Actual cost denomination) service or network usage Unit: (Country/Currency code) - enumerated Time Duration: Duration for which cost is applicable - enumerated Service Info: (whether unrestricted or restricted) Access Network specific information For each (Link Type and Operator) combination following information may be provided 2.1 TYPE_IE_NUMB Number of Point of This may be retrieved from Neighbor 4 ER_POA Attachments (PoA) for a Reports specific Access Network in the Neighborhood. Number of APs, BSs etc. in the vicinity of client device 2.2 TYPE_IE_NETW Security characteristics of Authentication Methods, Cipher Suites The Variable ORK_SECURITY the link layer. security capabilities type may be defined by 2.3 TYPE_IE_QOS QoS (Quality of Service) characteristics of the link layer PoA specific information For each PoA of eachfollowing IEs may be provided 3.1 TYPE_IE_POA_ MAC Address of PoA ADDRESS 3.2 TYPE_IE_POA_L OCATION media-specific MIB The QoS classes and traffic type may be defined by media-specific MIB Link-layer address of PoA (Usually the MAC Address of the PoA) Variable Variable Location of PoA Two types of location information are Variable supported in draft-ietf-geopriv-radius-loGeographical location of a 04.txt, i.e., geospatial location information given PoA. Multiple and civic location information. location types are supported including Geospatial location information consists of: coordinate-based location - Latitude Resolution information and civic - Latitude address - Longitude Resolution - Longitude - Altitude Type {Floor, Meters) - Altitude Resolution - Altitude - Map Datum (Co-ordinate reference system) Civic location information consists of: - Country Code - Civic address elements Method of obtaining location information - GPS - Manual 3.3 TYPE_IE_POA_ DATA_RATE 3.4 TYPE_IE_POA_P HY_TYPE TYPE_IE_POA_ MAC_TYPE TYPE_IE_POA_ CHANNEL_RAN GE 3.5 3.6 Data Rate A data rate is represented as a 32-bit The minimum and max- unsigned integer in unit of Kbps. imum value of data rate supported by the link layer of a given PoA The media PHY type. Classification of the PHY layer 4 (32-bit unsigned integer) The media MAC type. Variable Classification of the MAC layer Channel Range/Parameters (Low, High range) MHz Spectrum range supported by the Channel for that PoA Higher layer services/information per PoA 4.1 TYPE_IE_POA_S Information about subnets (IPv4/IPv6) UBNET_INFOR supported by a typical PoA Each PoA may be assigned to multiple MATION subnets. Availability of global or private address spaces. 4.2 TYPE_IE_POA_ CAPABILITIES Bitmap of PoA capabilities Security Available Y/N QoS Available Y/N Emergency Services available Y/N Others: Other Information Elements 5.1 Vendor Specific IEs Vendor Specific Services These may be defined by individual ven- Variable 4,4 (32-bit unsigned integer) Variable dors.