IP Library › Granted Patent US 8,483,720
Granted Patent B2
US 8,483,720 · App. 12/136,861 · Granted Jul 9, 2013

Smart/active RFID tag for use in a WPAN

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Quick Facts
Patent No.
US 8,483,720
App. No.
12/136,861
Granted
Jul 9, 2013
Kind
B2
Abstract

A system and method is provided for processing communication signals in a wireless personal area network (WPAN) using a transceiver comprising a first transmitter and a first receiver operable to transmit and receive signals using a first transmission protocol and a second transmitter operable to transmit signals using a second transmission protocol. In various embodiments, the first receiver is used to receive a first signal that was transmitted using the first communication protocol and the second transmitter is used to transmit a second signal using the second transmission protocol in response to receipt of the first signal. The second signal is then processed to determine the location of the object. In some embodiments, the first transmission protocol is compliant with an Institute of Electrical and Electronics Engineers 802.15.4 transmission protocol and the second transmission protocol is compliant with an Ultra-Wide Band (UWB) protocol.

Claims (30)

1. A method for determining the location of an object using a transceiver co-located with said object, said transceiver comprising a first transmitter and a first receiver operable to transmit and receive signals using a first transmission protocol and a second transmitter operable to transmit signals using a second transmission protocol, the method comprising:

transmitting a first signal using said first transmission protocol;

using said first receiver to receive said first signal;

using said first transmitter to transmit a second signal using said first transmission protocol in response to receipt of said first signal, if said transceiver is outside transmission range of a node using said second transmission protocol;

using said second transmitter to transmit a second signal using said second transmission protocol in response to receipt of said first signal, if said transceiver is within transmission range of a node using said second transmission protocol; and

processing said second signal to determine the location of said object.

2. The method of claim 1 , wherein said first transmission protocol is an IEEE 802.15.4 transmission protocol.

3. The method of claim 1 , wherein said second transmission protocol is compliant with an Ultra Wide Band (UWB) protocol.

4. The method of claim 1 , wherein said first signal is transmitted by a fixed node transceiver.

5. The method of claim 1 , wherein said second transmitter is contained in a mobile transceiver node.

6. The method of claim 1 , wherein circuitry comprising said first transmitter, said first receiver, and said second transmitter are fabricated on a single integrated circuit substrate.

7. A system for determining the location of an object using a transceiver co-located with said object, said transceiver comprising a first transmitter and a first receiver operable to transmit and receive signals using a first transmission protocol and a second transmitter operable to transmit signals using a second transmission protocol, wherein:

said first transmitter is configured to transmit a first signal using said first transmission protocol;

said first receiver is configured to receive said first signal;

said first transmitter is further configured to transmit a second signal using said first transmission protocol in response to receipt of said first signal, if said transceiver is outside transmission range of a node using said second transmission protocol;

said second transmitter is configured to transmit a second signal using said second transmission protocol in response to receipt of said first signal, if said transceiver is within transmission range of a node using said second transmission protocol; and

said second signal is processed to determine the location of said object.

8. The system of claim 7 , wherein said first transmission protocol is an IEEE 802.15.4 transmission protocol.

9. The system of claim 7 , wherein said second transmission protocol is compliant with an Ultra Wide Band (UWB) protocol.

10. The system of claim 7 , wherein said first signal is transmitted by a fixed node transceiver.

11. The system of claim 7 , wherein said second transmitter is contained in a mobile transceiver node.

12. The system of claim 7 , wherein circuitry comprising said first transmitter, said first receiver, and said second transmitter are fabricated on a single integrated circuit substrate.

13. A transceiver for use in a wireless personal area network (WPAN), comprising:

a first transmitter and a first receiver operable to transmit and receive signals using a first transmission protocol;

a second transmitter operable to transmit signals using a second transmission protocol;

an Ultra Wide Band (UWB) antenna for transmitting signals using the first and second transmission protocols; and

an antenna diversity switch for selectively coupling the first and second transmitters to the UWB antenna;

wherein circuitry comprising said first transmitter, said first receiver, and said second transmitter are fabricated on a single integrated circuit substrate;

wherein said first transmission protocol is an IEEE 802.15.4 transmission protocol; and

wherein said second transmission protocol is compliant with an Ultra Wide Band (UWB) protocol.

Assignments (22)
CORRECTIVE ASSIGNMENT TO CORRECT THE REMOVE APPLICATION 11759915 AND REPLACE IT WITH APPLICATION 11759935 PREVIOUSLY RECORDED ON REEL 040925 FRAME 0001. ASSIGNOR(S) HEREBY CONFIRMS THE RELEASE OF SECURITY INTEREST. Recorded Feb 17, 2020
From: MORGAN STANLEY SENIOR FUNDING, INC.
To: NXP, B.V. F/K/A FREESCALE SEMICONDUCTOR, INC.
Reel/Frame 052917/0001 →
CORRECTIVE ASSIGNMENT TO CORRECT THE REMOVE APPLICATION 11759915 AND REPLACE IT WITH APPLICATION 11759935 PREVIOUSLY RECORDED ON REEL 040928 FRAME 0001. ASSIGNOR(S) HEREBY CONFIRMS THE RELEASE OF SECURITY INTEREST. Recorded Jan 17, 2020
From: MORGAN STANLEY SENIOR FUNDING, INC.
To: NXP B.V.
Reel/Frame 052915/0001 →
CORRECTIVE ASSIGNMENT TO CORRECT THE REMOVE APPLICATION 11759915 AND REPLACE IT WITH APPLICATION 11759935 PREVIOUSLY RECORDED ON REEL 037486 FRAME 0517. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT AND ASSUMPTION OF SECURITY INTEREST IN PATENTS. Recorded Dec 10, 2019
From: CITIBANK, N.A.
To: MORGAN STANLEY SENIOR FUNDING, INC.
Reel/Frame 053547/0421 →
RELEASE OF SECURITY INTEREST Recorded Sep 10, 2019
From: MORGAN STANLEY SENIOR FUNDING, INC.
To: NXP B.V.
Reel/Frame 050744/0097 →
CORRECTIVE ASSIGNMENT TO CORRECT THE TO CORRECT THE APPLICATION NO. FROM 13,883,290 TO 13,833,290 PREVIOUSLY RECORDED ON REEL 041703 FRAME 0536. ASSIGNOR(S) HEREBY CONFIRMS THE THE ASSIGNMENT AND ASSUMPTION OF SECURITY INTEREST IN PATENTS.. Recorded Feb 20, 2019
From: MORGAN STANLEY SENIOR FUNDING, INC.
To: SHENZHEN XINGUODU TECHNOLOGY CO., LTD.
Reel/Frame 048734/0001 →
CORRECTIVE ASSIGNMENT TO CORRECT THE REMOVE PATENTS 8108266 AND 8062324 AND REPLACE THEM WITH 6108266 AND 8060324 PREVIOUSLY RECORDED ON REEL 037518 FRAME 0292. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT AND ASSUMPTION OF SECURITY INTEREST IN PATENTS. Recorded Feb 1, 2017
From: CITIBANK, N.A.
To: MORGAN STANLEY SENIOR FUNDING, INC.
Reel/Frame 041703/0536 →
CORRECTIVE ASSIGNMENT TO CORRECT THE NATURE OF CONVEYANCE LISTED CHANGE OF NAME SHOULD BE MERGER AND CHANGE PREVIOUSLY RECORDED AT REEL: 040652 FRAME: 0180. ASSIGNOR(S) HEREBY CONFIRMS THE MERGER AND CHANGE OF NAME. Recorded Jan 12, 2017
From: FREESCALE SEMICONDUCTOR INC.
To: NXP USA, INC.
Reel/Frame 041354/0148 →
CHANGE OF NAME Recorded Nov 8, 2016
From: FREESCALE SEMICONDUCTOR INC.
To: NXP USA, INC.
Reel/Frame 040652/0180 →
RELEASE OF SECURITY INTEREST Recorded Nov 7, 2016
From: MORGAN STANLEY SENIOR FUNDING, INC.
To: NXP B.V.
Reel/Frame 040928/0001 →
RELEASE OF SECURITY INTEREST Recorded Sep 21, 2016
From: MORGAN STANLEY SENIOR FUNDING, INC.
To: NXP, B.V., F/K/A FREESCALE SEMICONDUCTOR, INC.
Reel/Frame 040925/0001 →
SUPPLEMENT TO THE SECURITY AGREEMENT Recorded Jun 16, 2016
From: FREESCALE SEMICONDUCTOR, INC.
To: MORGAN STANLEY SENIOR FUNDING, INC.
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ASSIGNMENT AND ASSUMPTION OF SECURITY INTEREST IN PATENTS Recorded Jan 13, 2016
From: CITIBANK, N.A.
To: MORGAN STANLEY SENIOR FUNDING, INC.
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ASSIGNMENT AND ASSUMPTION OF SECURITY INTEREST IN PATENTS Recorded Jan 12, 2016
From: CITIBANK, N.A.
To: MORGAN STANLEY SENIOR FUNDING, INC.
Reel/Frame 037486/0517 →
PATENT RELEASE Recorded Dec 21, 2015
From: CITIBANK, N.A., AS COLLATERAL AGENT
To: FREESCALE SEMICONDUCTOR, INC.
Reel/Frame 037354/0719 →
PATENT RELEASE Recorded Dec 21, 2015
From: CITIBANK, N.A., AS COLLATERAL AGENT
To: FREESCALE SEMICONDUCTOR, INC.
Reel/Frame 037356/0553 →
PATENT RELEASE Recorded Dec 21, 2015
From: CITIBANK, N.A., AS COLLATERAL AGENT
To: FREESCALE SEMICONDUCTOR, INC.
Reel/Frame 037356/0143 →
SECURITY AGREEMENT Recorded Nov 6, 2013
From: FREESCALE SEMICONDUCTOR, INC.
To: CITIBANK, N.A., AS NOTES COLLATERAL AGENT
Reel/Frame 031591/0266 →
SECURITY AGREEMENT Recorded Jun 18, 2013
From: FREESCALE SEMICONDUCTOR, INC.
To: CITIBANK, N.A., AS NOTES COLLATERAL AGENT
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SECURITY AGREEMENT Recorded May 13, 2010
From: FREESCALE SEMICONDUCTOR, INC.
To: CITIBANK, N.A., AS COLLATERAL AGENT
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SECURITY AGREEMENT Recorded Mar 15, 2010
From: FREESCALE SEMICONDUCTOR, INC.
To: CITIBANK, N.A.
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SECURITY AGREEMENT Recorded Sep 24, 2008
From: FREESCALE SEMICONDUCTOR, INC.
To: CITIBANK, N.A.
Reel/Frame 021570/0449 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 11, 2008
From: FARAHANI, SHAHIN; CHANG, KUOR-HSIN; POWELL, CLINTON C
To: FREESCALE SEMICONDUCTOR, INC.
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