前言:信息技术部门的标准制定与国际标准制定相协调。通过CSA信息技术技术委员会（TCIT），加拿大人担任加拿大标准委员会（SCC）ISO/IEC信息技术联合技术委员会（ISO/IEC JTC1）的SCC镜像委员会（SMC），该委员会是加拿大的ISO成员机构，也是IEC加拿大国家委员会的发起人。此外，作为国际电信联盟（ITU）的成员，加拿大还参加了国际电报和电话咨询委员会（ITU-T）。本标准已由技术委员会正式批准，无需修改，并根据加拿大标准委员会对加拿大国家标准的要求制定。 CSA集团已将其作为加拿大国家标准发布。范围:本标准定义了一个可扩展的IEEE 802®媒体访问独立服务框架（即功能和协议），当在异构IEEE 802网络之间执行时，该框架能够优化服务，包括切换服务。当在IEEE 802网络和蜂窝网络之间联网时，它也促进了这些服务。

Preface:Standards development within the Information Technology sector is harmonized with international standards development. Through the CSA Technical Committee on Information Technology (TCIT), Canadians serve as the SCC Mirror Committee (SMC) on ISO/IEC Joint Technical Committee 1 on Information Technology (ISO/IEC JTC1) for the Standards Council of Canada (SCC), the ISO member body for Canada and sponsor of the Canadian National Committee of the IEC. Also, as a member of the International Telecommunication Union (ITU), Canada participates in the International Telegraph and Telephone Consultative Committee (ITU-T).This Standard has been formally approved, without modification, by the Technical Committee and has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group.Scope:This standard defines an extensible IEEE 802® media access independent services framework (i.e., function and protocol) that enables the optimization of services including handover service when performed between heterogeneous IEEE 802 networks. It also facilitates these services when networking between IEEE 802 networks and cellular networks.