Appendix E: HELD Identity Extensions

This appendix provides a schema permitting Target identity information to be included in a HELD location request. The HELD identity extensions should be used where the source IP address of a location request message is inadequate to identify the Target being sort. Some circumstances where this may arise are described in Chapters 4, 5, 6, and 8; however, the scenarios explored in these chapters are not exhaustive and the HELD identity extensions may be used in scenarios not discussed. Furthermore, the HELD identity schema described here provides identity information for scenarios that have been considered by the authors and industry experts. New scenarios may well lead to new identity information being required, and thus a revision to this schema.

HELD Identity Extensions Schema

       <a name="939"></a><a name="IDX-302"></a>                                     An IP version 6 address, based on RFC 1884.                      <a name="940"></a><a name="IDX-303"></a>                                          <a name="941"></a><a name="IDX-304"></a>                                                  <a name="942"></a><a name="N41397"></a>

Identity Extension Examples

The following sections provide examples of how HELD identity extensions may be used to assist with location determination for the correct end-point.

DHCP Example

  192.168.5.9 Netgear-1 010/50

The preceding sample describes DHCP-related information that may assist in identifying a Target. This may be employed in a DSL network where an ISP uses DHCP to allocate IP addresses but needs to send the circuit information to an RANP LIS in order to obtain the actual location. A HELD request containing this additional information would look similar to the following code fragment.

   192.168.5.9

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IP Location

TABLE OF CONTENTS

Appendix E: HELD Identity Extensions

HELD Identity Extensions Schema

Identity Extension Examples

DHCP Example

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