Location Measurements for IEEE 802.16e Devices

By submitting this Internet-Draft, each author represents that any applicable patent or other IPR claims of which he or she is aware have been or will be disclosed, and any of which he or she becomes aware will be disclosed, in accordance with Section 6 of BCP 79.

Internet-Drafts are working documents of the Internet Engineering Task Force (IETF), its areas, and its working groups. Note that other groups may also distribute working documents as Internet-Drafts.

Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as “work in progress.”

Abstract

IEEE 802.16e defines means for true mobility within an 802.16 wireless network. Determining an accurate location for 802.16e devices requires information on radio parameters. A format is defined for location-related measurement data that can be provided by an 802.16e device. This measurement data can be used by a Location Information Server (LIS) to more accurately determine the location of the device. A separate measurement used for identifying WiMAX session-related parameters is also provided.

1. Introduction
2. Conventions used in this document
3. 802.16e Radio Measurement Data
4. WiMAX Session-Related Measurements
5. 802.16e Measurement Schema
6. Security Considerations
7. IANA Considerations
7.1. URN Sub-Namespace Registration for urn:ietf:params:xml:ns:held:lm:802.16e
7.2. XML Schema Registration for 802.16e Measurement Schema
8. Normative References
§ Authors' Addresses
§ Intellectual Property and Copyright Statements

1. Introduction

This document describes a standard format for 802.16e measurement data that is based on radio measurements made of base stations near the device.

2. Conventions used in this document

3. 802.16e Radio Measurement Data

A subscriber station (SS) in an 802.16e network is able to observe radio signals from each base station (BS) in its proximity. By observing the timing and strength of these signals, a SS is able to provide a LIS with information that can be used to determine its location.

More measurement information can be provided, including timing measurement information for additional serving base stations (if fast base station switching (FBSS) or macro-diversity hand-over (MDHO) are in progress). Information on neighbouring base stations can be provided in addition to that for the serving BS.

The set of measurement data is chosen by the SS and the presence of specific elements will depend on the time the SS has available to acquire the measurements. The following measurement information may be provided:

The XML format described in this document provides a greater range of values than the Scanning Results Report (MOB_SCN-REP) or the Channel measurement Report Response (REP-RSP) message. This allows for the reporting of measurements in a manner less constrained by encoding. A greater range of values does not necessarily imply anything about the uncertainty in those measurements; the RMS error is used to indicate the magnitude of any error.

4. WiMAX Session-Related Measurements

In Worldwide Interoperability for Microwave Access (WiMAX) networks [WiMAX.LBS] (WiMAX Forum, “WiMAX Network Protocols and Architecture for Location Based Services,” November 2008.), an SS might have a particular access network designated as a "home network". In some configurations the network is designed in such a way that the SS only has access to a location server in the home network, known as a home location server, or hLS. However, a server in the current (visited) access network—the vLS—could be the only server that is capable of communicating with the access network to determine the location of the SS. In this case the hLS provides WiMAX session information to the vLS, giving the vLS the information necessary to identify a session and generate location information.

Session parameters are used to identify a particular network attachment session:

5. 802.16e Measurement Schema

<?xml version="1.0"?>
<xs:schema
    targetNamespace="urn:ietf:params:xml:ns:geopriv:lm:802.16e"
    xmlns:w16e="urn:ietf:params:xml:ns:geopriv:lm:802.16e"
    xmlns:bt="urn:ietf:params:xml:ns:geopriv:lm:basetypes"
    xmlns:xs="http://www.w3.org/2001/XMLSchema"
    elementFormDefault="qualified"
    attributeFormDefault="unqualified">

  <xs:annotation>
    <xs:documentation source="https://www.ietf.org/rfc/rfcXXXX.txt">
      <!-- [[NOTE TO RFC-EDITOR: Please replace above URL with URL of
           published RFC and remove this note.]] -->
      This document defines a location-related measurement format
      for 802.16e mobile wireless devices.
    </xs:documentation>
  </xs:annotation>

  <xs:import namespace="urn:ietf:params:xml:ns:geopriv:lm:basetypes"/>

  <xs:element name="w16e" type="w16e:w16eType"/>
  <xs:complexType name="w16eType">
    <xs:complexContent>
      <xs:restriction base="xs:anyType">
        <xs:sequence>
          <xs:choice>
            <xs:element ref="w16e:servingBS" maxOccurs="unbounded"/>
            <xs:element ref="w16e:neighbourBS"/>
          </xs:choice>
          <xs:element ref="w16e:neighbourBS"
                      minOccurs="0" maxOccurs="unbounded"/>
        </xs:sequence>
      </xs:restriction>
    </xs:complexContent>
  </xs:complexType>

  <xs:element name="neighbourBS" type="w16e:bsType"/>

  <xs:complexType name="bsType">
    <xs:complexContent>
      <xs:restriction base="xs:anyType">
        <xs:sequence>
          <xs:element name="rssi" type="bt:doubleWithRMSError"
                      minOccurs="0"/>
          <xs:element name="cinr" type="bt:doubleWithRMSError"
                      minOccurs="0"/>
          <xs:element name="rd" type="bt:doubleWithRMSError"
                      minOccurs="0"/>
          <xs:any namespace="##other" processContents="lax"
                  minOccurs="0" maxOccurs="unbounded"/>
        </xs:sequence>
        <xs:attribute name="id" type="bt:macAddressType"/>
      </xs:restriction>
    </xs:complexContent>
  </xs:complexType>

  <xs:element name="servingBS" type="w16e:servingBsType"/>

  <xs:complexType name="servingBsType">
    <xs:complexContent>
      <xs:extension base="w16e:bsType">
        <xs:sequence>
          <xs:element name="rtd" type="bt:nnDoubleWithRMSError"
                      minOccurs="0"/>
        </xs:sequence>
      </xs:extension>
    </xs:complexContent>
  </xs:complexType>

  <xs:element name="wimaxSession" type="w16e:wimaxSessionType"/>

  <xs:complexType name="wimaxSessionType">
    <xs:complexContent>
      <xs:restriction base="xs:anyType">
        <xs:sequence>
          <xs:element name="sessionID" type="xs:hexBinary"/>
          <xs:element name="nai" type="w16e:naiType"/>
          <xs:element name="anchor" type="w16e:anchorType"/>
          <xs:any namespace="##other" processContents="lax"
                  minOccurs="0" maxOccurs="unbounded"/>
        </xs:sequence>
      </xs:restriction>
    </xs:complexContent>
  </xs:complexType>

  <xs:complexType name="anchorType">
    <xs:simpleContent>
      <xs:extension base="w16e:domainType">
        <xs:attribute name="ip" type="bt:ipAddressType"/>
      </xs:extension>
    </xs:simpleContent>
  </xs:complexType>

  <xs:simpleType name="domainType">
    <xs:restriction base="xs:token">
      <xs:pattern
          value="([a-zA-Z0-9]([a-zA-Z0-9-]*[a-zA-Z0-9])?\.?)+"/>
    </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="naiType">
    <xs:restriction base="xs:token">
      <xs:pattern
          value="((((([-0-9a-zA-Z!#$%&amp;'*+/=?^_`{|}~]
                      |\P{IsBasicLatin}|\\.)+\.)*
                     ([-0-9a-zA-Z!#$%&amp;'*+/=?^_`{|}~]
                      |\P{IsBasicLatin}|\\.)+)
                   (\@([0-9a-zA-Z]([-0-9a-zA-Z]*[0-9a-zA-Z])?\.)*
                    ([0-9a-zA-Z]([-0-9a-zA-Z]*[0-9a-zA-Z])?))?)
                  |(\@([0-9a-zA-Z]([-0-9a-zA-Z]*[0-9a-zA-Z])?\.)*
                    ([0-9a-zA-Z]([-0-9a-zA-Z]*[0-9a-zA-Z])?)))"/>
    </xs:restriction>
  </xs:simpleType>
</xs:schema>

6. Security Considerations

7. IANA Considerations

7.1. URN Sub-Namespace Registration for urn:ietf:params:xml:ns:held:lm:802.16e

7.2. XML Schema Registration for 802.16e Measurement Schema

8. Normative References

Authors' Addresses

Full Copyright Statement

This document is subject to the rights, licenses and restrictions contained in BCP 78, and except as set forth therein, the authors retain all their rights.

This document and the information contained herein are provided on an “AS IS” basis and THE CONTRIBUTOR, THE ORGANIZATION HE/SHE REPRESENTS OR IS SPONSORED BY (IF ANY), THE INTERNET SOCIETY, THE IETF TRUST AND THE INTERNET ENGINEERING TASK FORCE DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

Intellectual Property

The IETF takes no position regarding the validity or scope of any Intellectual Property Rights or other rights that might be claimed to pertain to the implementation or use of the technology described in this document or the extent to which any license under such rights might or might not be available; nor does it represent that it has made any independent effort to identify any such rights. Information on the procedures with respect to rights in RFC documents can be found in BCP 78 and BCP 79.

Copies of IPR disclosures made to the IETF Secretariat and any assurances of licenses to be made available, or the result of an attempt made to obtain a general license or permission for the use of such proprietary rights by implementers or users of this specification can be obtained from the IETF on-line IPR repository at http://www.ietf.org/ipr.

The IETF invites any interested party to bring to its attention any copyrights, patents or patent applications, or other proprietary rights that may cover technology that may be required to implement this standard. Please address the information to the IETF at ietf-ipr@ietf.org.

[RFC2119]	Bradner, S., “Key words for use in RFCs to Indicate Requirement Levels,” BCP 14, RFC 2119, March 1997 (TXT, HTML, XML).
[RFC3688]	Mealling, M., “The IETF XML Registry,” BCP 81, RFC 3688, January 2004 (TXT).
[RFC4282]	Aboba, B., Beadles, M., Arkko, J., and P. Eronen, “The Network Access Identifier,” RFC 4282, December 2005 (TXT).
[I-D.thomson-geopriv-held-measurements]	Thomson, M. and J. Winterbottom, “Using Device-provided Location-Related Measurements in Location Configuration Protocols,” draft-thomson-geopriv-held-measurements-05 (work in progress), October 2009 (TXT).
[I-D.winterbottom-geopriv-held-identity-extensions]	Thomson, M., Tschofenig, H., Barnes, R., and J. Winterbottom, “Use of Target Identity in HTTP-Enabled Location Delivery (HELD),” draft-winterbottom-geopriv-held-identity-extensions-10 (work in progress), August 2009 (TXT).
[IEEE.80216E]	IEEE, “Air Interface for Fixed and Mobile Broadband Wireless Access Systems; Physical and Medium Access Control Layers for Combined Fixed and Mobile Operation in Licensed Bands,” Std 802.16E, February 2006.
[WiMAX.LBS]	WiMAX Forum, “WiMAX Network Protocols and Architecture for Location Based Services,” Network Release 1.5 1.0.0 Draft, November 2008.

	Martin Thomson
	Andrew
	PO Box U40
	Wollongong University Campus, NSW 2500
	AU
Phone:	+61 2 4221 2915
Email:	martin.thomson@andrew.com
URI:	http://www.andrew.com/

	James Winterbottom
	Andrew
	PO Box U40
	Wollongong University Campus, NSW 2500
	AU
Phone:	+61 2 4221 2938
Email:	james.winterbottom@andrew.com
URI:	http://www.andrew.com/

Location Measurements for IEEE 802.16e Devices
draft-thomson-geopriv-wimax-measurements-01

Status of this Memo

Abstract

Table of Contents

1. Introduction

2. Conventions used in this document

3. 802.16e Radio Measurement Data

4. WiMAX Session-Related Measurements

5. 802.16e Measurement Schema

6. Security Considerations

7. IANA Considerations

7.1. URN Sub-Namespace Registration for urn:ietf:params:xml:ns:held:lm:802.16e

7.2. XML Schema Registration for 802.16e Measurement Schema

8. Normative References

Authors' Addresses

Full Copyright Statement

Intellectual Property

Location Measurements for IEEE 802.16e Devicesdraft-thomson-geopriv-wimax-measurements-01

Status of this Memo

Abstract

Table of Contents

1. Introduction

2. Conventions used in this document

3. 802.16e Radio Measurement Data

4. WiMAX Session-Related Measurements

5. 802.16e Measurement Schema

6. Security Considerations

7. IANA Considerations

7.1. URN Sub-Namespace Registration for urn:ietf:params:xml:ns:held:lm:802.16e

7.2. XML Schema Registration for 802.16e Measurement Schema

8. Normative References

Authors' Addresses

Full Copyright Statement

Intellectual Property

Location Measurements for IEEE 802.16e Devices
draft-thomson-geopriv-wimax-measurements-01