METHOD FOR A RADIO FREQUENCY (RF) SAMPLING APPARATUS WITH ARRAYS OF TIME INTERLEAVED SAMPLERS AND SCENARIO BASED DYNAMIC RESOURCE ALLOCATION

• US 20100226330A1
• Filed: 03/03/2010
• Published: 09/09/2010
• Est. Priority Date: 03/03/2009
• Status: Active Grant

• Current Assignee: InterDigital Patent Holdings, Inc. (InterDigital, Inc.)
• Original Assignee: InterDigital Patent Holdings, Inc. (InterDigital, Inc.)
• Inventors: Newton, Scott M., Haque, Tanbir, Kazakevich, Leonid
• Granted Patent: US 8,532,039 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H03M 1/1215 using time-division multiplexing
• CPC Class Codes: H04B 1/28 the receiver comprising at least one semiconductor device having three or more electrodes
• CPC Class Codes: H04W 72/542 using measured or perceived quality

Abstract

A method and apparatus for dynamic resource allocation of an RF sampling system based on a signal quality measurement determined by generating a plurality of time-interleaved samples from a received radio frequency (RF) signal and combining the plurality of time-interleaved samples to generate the signal quality.

Claims

1. A wireless transmit/receive unit (WTRU), the WTRU comprising:

a front-end unit (FEU) configured to receive a radio frequency (RF) signal and to generate a plurality of time-interleaved samples, wherein the FEU includes;

an array of time-interleaved bandpass charge samplers; and

an array of time-interleaved voltage samplers;

a signal processing unit (SPU) configured to receive and combine the plurality of time-interleaved samples and to generate a signal quality measurement and in-phase and quadrature-phase (IQ) complex samples;

a resource management unit (RMU) configured to receive the signal quality measurement and allocate FEU resources in conjunction with a front-end unit controller (FEUC) based on the signal quality measurement; and

wherein the FEUC is configured to generate a plurality of control signals based on the received signal quality measurement from the RMU.

2. The WTRU of claim 1 wherein the array of time-interleaved voltage samplers are analog to digital converters (A/Ds).

3. The WTRU of claim 1 wherein on condition that the signal quality measurement is lower than a predetermined threshold, a plurality of time-interleaved bandpass charge samplers and a plurality of time-interleaved voltage samplers are activated.

4. The WTRU of claim 1 wherein on condition that the signal quality measurement is higher than a predetermined threshold, one or only some of the time-interleaved bandpass charge samplers and four or only some of the time-interleaved voltage samplers, associated with the time-interleaved bandpass charge sampler, are activated.

5. The WTRU of claim 1 wherein the signal quality is measured based on a received signal to total interference ratio.

6. The WTRU of claim 1, further comprising:

an array of de-multiplexers configured to connect each time-interleaved bandpass charge sampler to an array of time-interleaved voltage samplers.

7. The WTRU of claim 1, further comprising:

a multiplexer or a complex finite impulse response (FIR) configured to combine the plurality of time-interleaved samples.

8. The WTRU of claim 1, further comprising:

a low noise amplifier (LNA) configured to receive the RF signal and to transmit the RF signal to the FEU.

9. The WTRU of claim 1 wherein clock signals and the control signals are generated and used to control bias level and gain of the time-interleaved bandpass charge samplers.

10. The WTRU of claim 1 wherein clock signals and the control signals are generated and used to connect time-interleaved voltage samplers to time-interleaved bandpass charge samplers.

11. The WTRU of claim 1 wherein clock signals and the control signals are generated and used to control the resolution of time-interleaved voltage samplers or analog to digital converters (A/Ds).

12. The WTRU of claim 1 wherein the FEU is configured to receive the control signals from the FEUC.

13. A method for dynamic resource allocation, the method comprising:

receiving a radio frequency (RF) signal;

generating a plurality of time-interleaved samples based on the RF signal;

combining the plurality of time-interleaved samples and generating a signal quality measurement based on the plurality of time-interleaved samples; and

allocating time-interleaved bandpass charge sampler and time-interleaved voltage sampler resources based on the signal quality measurement.

14. The method of claim 13 wherein the time-interleaved voltage samplers are analog to digital converters (A/Ds).

15. The method of claim 13 wherein on condition that the signal quality measurement is lower than a predetermined threshold, a plurality of time-interleaved bandpass charge samplers and a plurality of time-interleaved voltage samplers are activated.

16. The method of claim 13 wherein on condition that the signal quality measurement is high, one or only some of the time-interleaved bandpass charge samplers and four or only some of the time-interleaved voltage samplers, associated with the time-interleaved bandpass charge sampler, are activated.

17. The method of claim 13 wherein the time-interleaved samples are collected in a uniform or non-uniform manner based upon the signal quality.

18. The method of claim 13 wherein IQ output samples are generated and transmitted to a modem.

19. The method of claim 13 wherein clock and control signals are generated and used to control a low noise amplifier gain and bias level.

20. The method of claim 13 wherein the RF signal is sampled by a time-interleaved sample and hold circuit and output to a quantizer cluster where the RF signal is quantized.