Method and apparatus for supporting an emergency call in a wireless metropolitan area network

A wireless metropolitan area network and emergency call technology, applied in the field of supporting emergency calls, can solve problems such as impracticability

Inactive Publication Date: 2009-05-27
INTERDIGITAL TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This feature cannot be implemented in conventional WMANs as the base station currently lacks the means to make this distinction

Method used

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  • Method and apparatus for supporting an emergency call in a wireless metropolitan area network
  • Method and apparatus for supporting an emergency call in a wireless metropolitan area network
  • Method and apparatus for supporting an emergency call in a wireless metropolitan area network

Examples

Experimental program
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Embodiment

[0044] CLAIMS 1. A method for supporting emergency calls in a wireless communication system comprising a WMAN.

[0045] 2. The method of embodiment 1, comprising the WTRU sending an emergency call message for initiating an emergency call and an emergency call indication to a base station of a WMAN.

[0046] 3. The method of embodiment 2, comprising the base station granting the emergency call.

[0047] 4. The method of embodiment 3 comprising the base station connecting the WTRU to an emergency call center.

[0048] 5. The method of any one of embodiments 2-4, further comprising the base station broadcasting base station capability information regarding emergency call support, wherein the WTRU sends the emergency call message only when the base station has emergency call capability.

[0049] 6. The method of any one of embodiments 2-5, further comprising the base station broadcasting an indication as to whether the emergency call capability in the base station is currently ac...

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PUM

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Abstract

A method and apparatus for supporting an emergency call in a wireless communication system including a wireless metropolitan area network (WMAN) are disclosed. A wireless transmit/receive unit (WTRU) sends an emergency call message to a base station of the WMAN to make an emergency call along with an emergency call indication. The base station then admits the emergency call with or without performing a security procedure and connects the WTRU to an emergency call center. The base station and the WTRU may communicate capability information regarding support of emergency calls. Location information of the WTRU is also forwarded to the emergency call center. The base station may work as a proxy for the WTRU if the WTRU does not have all the required functionalities to complete the emergency call. The WTRU may be a multi-mode WTRU capable of communicating with two or more radio access networks (RANs).

Description

technical field [0001] The present invention relates to wireless communication systems. In particular, the present invention relates to a method and apparatus for supporting emergency calls in a wireless communication system including a Wireless Metropolitan Area Network (WMAN). Background technique [0002] Conventional IEEE802.xx networks (such as IEEE802.11 wireless local area network (WLAN), IEEE802.15 wireless personal area network (WPAN), IEEE802.16 or IEEE802.20WMAN, etc.) do not need to provide support for emergency calls like cellular networks . For cellular networks, support for emergency calls is widely implemented, and emergency calls are often made due to regulatory needs. Support for emergency calls involves many aspects across all communication layers, especially signaling support and hosting procedures, which do not exist for IEEE802.xx networks. With the advent of Voice over Internet Protocol (VoIP) and the increasing use of wireless networks in everyday ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/22H04W12/06H04W48/12H04W84/12H04W4/90H04W4/02H04W4/029
CPCH04W76/007H04W4/22H04W4/02H04W12/06H04W76/50H04W4/90H04W4/029H04W48/08H04W8/20H04W68/02
Inventor M·鲁道夫R·G·穆里亚斯
Owner INTERDIGITAL TECH CORP
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