Timothy S Wilson

US Patent:

6671515, Dec 30, 2003

Filed:

Jun 6, 2000

Appl. No.:

09/588262

Inventors:

Michael J. Needham - Palatine IL
Timothy J. Wilson - Rolling Meadows IL
Leigh Chinitz - Silver Spring MD

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H04Q 720

US Classification:

455458, 455518

Abstract:

In a wireless communication system ( ) having a plurality of communication cells ( ), and a plurality of mobile stations ( ) operating within selected ones of the multiple communication cells ( ), a method and an apparatus for selecting those communication cells ( ). Within each communication cell ( ), a base station ( ) transmits a message directed to the mobile stations ( ), and detects a response indicator in the selected ones of the plurality of communication cells ( ). The message may be a broadcast page message transmitted by the base station ( ). The response indicator may be an impulse radio-frequency energy transmission generated by the plurality of mobile stations ( ) operating within the selected ones of the plurality of communication cells ( ). The base station ( ) may detect the impulse radio-frequency energy transmission on a control channel or during a predetermined time window period ( ) following transmission of the message. The base station ( ) directs call traffic to the plurality of mobile stations ( ) in the selected ones of the plurality of communication cells ( ).

US Patent:

6788941, Sep 7, 2004

Filed:

Dec 20, 2001

Appl. No.:

10/027041

Inventors:

Michael L. Needham - Palatine IL
Timothy J. Wilson - Rolling Meadows IL
Leigh M. Chinitz - Wellesley MA

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H04Q 720

US Classification:

455442, 455437

Abstract:

To address the need for an apparatus and method for CDMA-dispatch soft handoff, the present invention enables mobile-initiated soft handoff for dispatch calls. A mobile station ( ) in a dispatch call establishes an individual inbound link ( ) with the serving base site ( ). When the mobile station determines that a handoff with an adjacent site ( ) is needed, the mobile station uses its individual inbound link to request a soft handoff with the adjacent base site. After notifying the adjacent base site, the serving base site then transmits the handoff information to the mobile station to enable the mobile station to begin a soft handoff with the adjacent site.

US Patent:

6859490, Feb 22, 2005

Filed:

Jan 24, 2000

Appl. No.:

09/490979

Inventors:

Timothy J. Wilson - Rolling Meadows IL, US

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H04L005/16

US Classification:

375220, 375259, 370282, 370470, 455102

Abstract:

A method and system for wireless communications between a base transceiver station and a mobile unit which provides necessary guard times in the downlink signal burst while maintaining the same bit rate in both the downlink and uplink signal bursts is disclosed. Downlink signal bursts are modulated using a first modulation technique and uplink signal bursts are modulated using a second modulation technique. Preferably, the first modulation technique is a higher-order than the second modulation technique. The first modulation technique may be 16 QAM while the second modulation technique may be 4 QAM or π/4 QPSK.

US Patent:

6917598, Jul 12, 2005

Filed:

Dec 19, 2003

Appl. No.:

10/741651

Inventors:

Stephen P. Emeott - Rolling Meadows IL, US
Ye Chen - Schaumburg IL, US
Floyd D. Simpson - Lake Worth FL, US
Huai Y. Wang - Greenacres FL, US
Timothy J. Wilson - Rolling Meadows IL, US
Nattavut Smavatkul - Elkgrove Vllg. IL, US

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

G08C017/00

US Classification:

370311, 370338

Abstract:

A mobile station () establishes a real time communication link via an access point () for carrying voice or other time-sensitive data. A WLAN subsystem () of the mobile station is normally kept in a low power state. Upon initiating a communication link the mobile station signals to the access point that unscheduled power save delivery mode will be used (), and the access point reserves resources to assure the necessary quality of service. The mobile station initiates a frame transaction by first powering up the WLAN subsystem (), acquiring the WLAN channel (), and transmitting a polling frame. Upon successful receipt of the polling frame the access point prepares to reply with an aggregate response. The aggregate response commences by transmitting all data in an aggregate buffer, including both reserved and unreserved data buffers. Upon successful receipt of the aggregate response, the mobile station places the WLAN subsystem back into a low power state.

US Patent:

6925309, Aug 2, 2005

Filed:

Dec 20, 2001

Appl. No.:

10/027193

Inventors:

Michael L. Needham - Palatine IL, US
Timothy J. Wilson - Rolling Meadows IL, US
Leigh M. Chinitz - Wellesley MA, US

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H04Q007/38

US Classification:

455519, 455455

Abstract:

To address the need for an apparatus and method for quickly establishing a CDMA dispatch call, the present invention provides for paging mobile stations (e. g. , ) to inform them of the call and then starting the dispatch call without waiting for page responses from the call participants. The dispatch call is first transmitted by base sites (e. g. , ) of all the service coverage areas (e. g. , ) that may have call participants, and then discontinued at those base sites where no page responses are received within a period of time. Thus, the dispatch call is established while “call setup” effectively continues.

US Patent:

6961572, Nov 1, 2005

Filed:

Dec 20, 2001

Appl. No.:

10/027465

Inventors:

Michael L. Needham - Palatine IL, US
Timothy J. Wilson - Rolling Meadows IL, US
Leigh M. Chinitz - Wellesley MA, US

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H04Q007/20
H04Q007/00
H04M001/00

US Classification:

455442, 436438, 436450, 436518, 4365531, 436434, 370331, 370332

Abstract:

To address the need for an apparatus and method for CDMA-dispatch soft handoff, the present invention enables base-initiated soft handoff for dispatch calls. A mobile station () in a dispatch call establishes an individual inbound link () with the serving base site (). The serving base site and one or more adjacent base sites (e. g. , and ) determine the signal quality of the inbound link transmissions of the mobile station. The adjacent base site with the highest received inbound link signal quality is selected as the target soft handoff site. The serving base site then transmits the handoff information to enable the mobile station to begin a soft handoff with the target site.

US Patent:

6999774, Feb 14, 2006

Filed:

Oct 15, 2003

Appl. No.:

10/687398

Inventors:

Ajaykumar R Idnani - Schaumburg IL, US
Timothy J Wilson - Rolling Meadows IL, US
Ajoy Kumar Singh - Round Lake IL, US

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H04Q 7/20

US Classification:

455450, 455445, 4555521, 370338, 370397, 709224, 709217

Abstract:

A home agent () and a foreign agent () in a wireless communication system () establish () a special communications channel () between themselves, the special communications channel dedicated to messages addressed to multiple mobile nodes. The home agent then detects () whether a message received by the home agent is addressed to multiple mobile nodes. When the message is addressed to multiple mobile nodes, the home agent sends () the message to the foreign agent through the special communications channel.

US Patent:

7010299, Mar 7, 2006

Filed:

Nov 20, 2003

Appl. No.:

10/718205

Inventors:

Timothy J. Wilson - Rolling Meadows IL, US

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H04Q 7/20

US Classification:

455436, 442445, 4424221, 4424321, 442428, 370338, 370401

Abstract:

A method (), and apparatus () provide for mobility in WLAN voice systems. In one embodiment a processor () coupled to a memory () and a radio resource () determines from that client () should move, based for example on a signal parameter, to an adjacent MSN (). Adjacent MSNs are discovered and a modification of a portion of a tunnel switched path to the adjacent MSN is made and a portion released after the modified path is established. Information is transferred to client over the tunnel using a lower layer address such as a MAC address.