Wireless personal communicator and communication method

• US 6,957,069 B2
• Filed: 07/29/2003
• Issued: 10/18/2005
• Est. Priority Date: 07/31/2002
• Status: Active Grant

• Current Assignee: Taiwan Semiconductor Manufacturing Company Limited
• Original Assignee: Interdigital Technology Corporation (InterDigital, Inc.)
• Inventors: Menon, Narayan Parappil, Shah, Yogendra
• Primary Examiner(s): Moise, Emmanuel L.
• Assistant Examiner(s): Nguyen, Huy D.
• Application Number:
  US10/629,148
• Publication Number:
  US 20040023652A1
• Time in Patent Office: 812 Days
• Field of Search: 455/436, 455/437, 455/438, 455/439, 455/440, 455/442, 455/443, 455/444, 455/552.1, 370/331, 370/332, 370/333
• US Class Current: 455/436
• CPC Class Codes: H04W 48/18 Selecting a network or a communication service
• CPC Class Codes: H04W 76/10 Connection setup
• CPC Class Codes: H04W 88/04 adapted for relaying to or from another terminal or user
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Abstract

A personal communicator in the form of a wireless transmit/receive unit (WTRU) can communicate in multiple modes to provide a user with seamless roaming, handover, and session continuity between multiple network or peer to peer communications. The WTRU has selectively operable transceiver components that are configured for wireless mobile network communications with mobile network base stations, wireless local network communications with local network base stations, and wireless peer to peer communications with other WTRUs. Various methods are provided utilizing the WTRU'"'"'s multiple network communicating capabilities.

Claims

1. A wireless transmit/receive unit (WTRU) for communication in a wireless mobile network, at least one wireless local area network (WLAN), and for ad hoc peer to peer wireless communications with other WTRUs, comprising:

selectively operable transceiver components that are configured for wireless mobile network communications with mobile network base stations, WLAN communications with WLAN base stations, and wireless peer to peer communications with other WTRUs;

a transceiver controller configured to selectively control wireless communications with mobile network base stations based on communication signals received from WLAN base stations or other WTRUs such that;

a wireless mobile network communication is switched to a WLAN base station or other WTRU when wireless communication signals received from such WLAN base station or other WTRU indicates a first predetermined quality of service level available therefrom, and

a wireless mobile network communication is sought to be established when a wireless communication with a WLAN base station or other WTRU indicates that at least a second predetermined quality of service level is no longer available therefrom and no communication signals are received from a WLAN base station or other WTRU that indicate availability of the first predetermined quality of service level; and

said transceiver controller is further configured to selectively control wireless communications with WLAN base on communication signals received from other WTRUs such that;

a WLAN communication is switched to another WTRU when communication signals received from such other WTRU indicates a third predetermined quality of service level is available therefrom, and

a WLAN communication is sought to be established when communication with another WTRU indicates that at least a fourth predetermined quality of service level is no longer available therefrom and no communication signals are received from other WTRUs that indicate availability of the third predetermined quality of service level.

2. The invention of claim 1 wherein the first predetermined quality of service level used by the transceiver controller is no greater than the third predetermined quality of service level used by the transceiver controller and the second predetermined quality of service level used by the transceiver controller is no greater than the fourth predetermined quality of service level used by the transceiver controller.

3. The invention of claim 1 wherein the transceiver components include a wireless local area network (WLAN) modem for the peer to peer communications with other WTRUs.

4. The invention of claim 1 wherein the WTRU is a mobile unit and the transceiver controller is configured to use a pre-determined quality of service level based on a quality of radio signal criteria in combination with a relative cost criteria, a power consumption criteria and/or an estimate of the geographic location of the mobile unit.

5. The invention of claim 4 further comprising a Global Positioning System (GPS) for generating the estimate of the geographic location of the mobile unit.

6. A method of communication using a wireless transmit/receive unit (WTRU) within multiple networks including a wireless mobile network, at least one wireless local area network (WLAN), and ad hoc peer to peer wireless networks with other WTRUs, comprising:

providing WTRUs having selectively operable transceiver components that are configured for wireless mobile network communications with mobile network base stations, WLAN communications with WLAN base stations, and ad hoc peer to peer wireless network communications with other WTRUs;

selectively controlling wireless communications of the WTRUs with mobile network base stations based on communication signals received from WLAN base stations or other WTRUs such that;

a wireless mobile network communication is switched to a WLAN base station or other WTRU when wireless communication signals received from such WLAN base station or other WTRU indicates a first predetermined quality of service level available therefrom, and

a wireless mobile network communication is sought to be established when a wireless communication with a WLAN base station or other WTRU indicates that at least a second predetermined quality of service level is no longer available therefrom and no communication signals are received from a WLAN base station or other WTRU that indicate availability of the first predetermined quality of service level; and

selectively controlling wireless communication with WLAN base stations based on communication signals received from other WTRUs such that;

a WLAN communication is switched to another WTRU when communication signals received from such other WTRU indicates a third predetermined quality of service level is available therefrom, and

a WLAN communication is sought to be established when a communication with another WTRU indicates that at least a fourth predetermined quality of service level is no longer available therefrom and no communication signals are received from other WTRUs that indicate availability of the third predetermined quality of service level.

7. The method of claim 6 wherein the first predetermined quality of service level used is no greater than the third predetermined quality of service level used and the second predetermined quality of service level used is no greater than the fourth predetermined quality of service level used.

8. The method of claim 6 wherein WTRUs are provided with transceiver components that include a wireless local area network (WLAN) modem for peer to peer communications with other WTRUs.

9. The method of claim 6 wherein the pre-determined quality of service levels that are used are based on a quality of radio signal criteria in combination with a relative cost criteria, a power consumption criteria and/or an estimate of the geographic location of the mobile unit.

10. The method of claim 9 further comprising using a Global Positioning System (GPS) for generating the estimate of the geographic location of the WTRU.