Multimode receiving device, multimode transmitting device and multimode transceiving method

Patent metadata

Field	Value
Publication number	US-10461796-B2
Application number	US-201715657495-A
Country	US
Kind code	B2
Filing date	Jul 24, 2017
Priority date	Jul 27, 2016
Publication date	Oct 29, 2019
Grant date	Oct 29, 2019

Abstract

A multimode receiving device configured to receive a standard Bluetooth data packet and a physical layer data packet with enhanced performance, can include: a receiving circuit configured to convert a received radio frequency signal to a baseband modulated signal; a demodulation circuit configured to select a demodulation scheme that conforms to a Bluetooth standard or one of a plurality of despread demodulation schemes, in order to demodulate the baseband modulated signal; and the plurality of despread demodulation schemes being configured to correspond to a plurality of predetermined spread-spectrum modulation schemes.

First claim

What is claimed is:

1. A multimode receiving device configured to receive a standard Bluetooth data packet and a physical layer data packet with enhanced performance, the multimode receiving device comprising:
a) a receiving circuit configured to convert a received radio frequency signal to a baseband modulated signal;
b) a demodulation circuit configured to select a demodulation scheme that conforms to a Bluetooth standard or one of a plurality of despread demodulation schemes, in order to demodulate said baseband modulated signal;
c) said plurality of despread demodulation schemes being configured to correspond to a plurality of predetermined spread-spectrum modulation schemes; and
d) wherein said plurality of spread-spectrum modulation schemes converts a Bluetooth baseband signal to a spread signal with its chip rate being the same as a symbol rate of said Bluetooth baseband signal.

2. The multimode receiving device of claim 1 , wherein said demodulation circuit configured to:
a) acquire a correlation signal by associating a portion of a Bluetooth data packet access code and a corresponding spreading sequence of said plurality of spread-spectrum modulation schemes with said baseband modulated signal; and
b) determine a demodulation scheme based on said correlation signal.

3. The multimode receiving device of claim 2 , wherein said demodulation circuit is configured to select said demodulation scheme with said correlation signal being greater than a predetermined threshold to demodulate said baseband modulated signal.

4. The multimode receiving device of claim 1 , wherein said plurality of spread-spectrum modulation schemes is configured to adopt spreading sequences with different symbol rates or types.

5. The multimode receiving device of claim 1 , wherein chips of said spread signals corresponding to different spread-spectrum modulation schemes have different symbol amounts.

6. The multimode receiving device of claim 4 , wherein said spreading sequence is a pseudo-random sequence.

7. The multimode receiving device of claim 4 , wherein said spreading sequence is a sequence with a predetermined length, and said different spread-spectrum modulation schemes have different spreading sequence lengths.

8. The multimode receiving device of claim 1 , wherein said demodulation circuit comprises:
a) a plurality of despread demodulator, wherein each despread demodulator is configured to demodulate said baseband modulated signal, and to output a corresponding demodulated signal based on one of said plurality of despread demodulation schemes;
b) a demodulator configured to demodulate said baseband modulated signal, and to output a corresponding demodulated signal based on said Bluetooth standard demodulation scheme;
c) a mode matching correlator configured to acquire a correlation signal by associating a portion of a Bluetooth data packet access code and a corresponding spreading sequence of a plurality of spread-spectrum modulation schemes with said baseband modulated signal, and to output a mode selection signal based on said correlation signal; and
d) a demodulated signal selector configured to output one demodulated signal based on said mode selection signal.

9. The multimode receiving device of claim 8 , wherein said mode matching correlator comprises:
a) a plurality of correlators configured to output correlation signals by associating said baseband modulated signal with a portion of a Bluetooth data packet access code that corresponds to said correlator or a spreading sequence; and
b) a plurality of threshold comparators corresponding to said correlators and being configured to output a corresponding mode selection signal when said correlation signal output by said corresponding correlator is greater than a predetermined threshold.

10. The multimode receiving device of claim 1 , wherein said Bluetooth standard is a Bluetooth Low Energy (BLE) standard.

11. A multimode transmitting device being configured to transmit a standard Bluetooth data packet and a physical layer data packet of enhanced performance, the multimode transmitting device comprising:
a) a modulation circuit configured to modulate a Bluetooth baseband signal by selecting a modulation scheme conforming to a Bluetooth standard or one of a plurality of spread-spectrum modulation schemes, and to output a baseband modulated signal;
b) a receiving circuit configured to convert said baseband modulated signal to a radio frequency signal; and
c) wherein said plurality of spread-spectrum modulation schemes converts a Bluetooth baseband signal to a spread signal with its chip rate being the same as a symbol rate of said Bluetooth baseband signal.

12. The multimode transmitting device of claim 11 , wherein said plurality of spread-spectrum modulation schemes adopts spreading sequences with different symbol rates or types.

13. The multimode transmitting device of claim 11 , wherein chips of said spread signals corresponding to different spread-spectrum modulation schemes have different symbol amounts.

14. The multimode transmitting device of claim 12 , wherein said spreading sequence is a pseudo-random sequence.

15. The multimode transmitting device of claim 12 , wherein said spreading sequence is sequence with a predetermined length, and said different spread-spectrum modulation schemes have different spreading sequence lengths.

16. The multimode transmitting according to anyone of claim 11 , wherein said Bluetooth standard is a Bluetooth Low Energy (BLE) standard.

17. A multimode transceiving method, comprising:
a) modulating a Bluetooth baseband signal by selecting a modulation scheme conforming to a Bluetooth standard or one of a plurality of spread-spectrum modulation schemes and sending a baseband modulated signal;
b) demodulating a received baseband modulated signal by selecting a demodulation scheme conforming to a Bluetooth standard or one of a plurality of despread demodulation schemes, wherein said plurality of despread demodulation schemes correspond to a plurality of predetermined spread-spectrum modulation schemes; and
c) wherein said plurality of spread-spectrum modulation schemes converts said Bluetooth baseband signal to a spread signal with its chip rate being the same as a symbol rate of said Bluetooth baseband signal.

Assignees

• Silergy Semiconductor Technology Hangzhou Ltd

Inventors

• Qiao Junjie

Classifications

• H04B1/48

  in circuits for connecting transmitter and receiver to a common transmission path, e.g. by energy of transmitter {(H04B1/46 takes precedence)} · CPC title

• H04B1/401

  for selecting or indicating operating mode · CPC title

• H04L27/2017

  in which the phase changes are non-linear, e.g. generalized and Gaussian minimum shift keying, tamed frequency modulation (H04L27/201 takes precedence) · CPC title

• H04B1/406 Primary

  with more than one transmission mode, e.g. analog and digital modes · CPC title

• H04W88/06 Primary

  adapted for operation in multiple networks {or having at least two operational modes}, e.g. multi-mode terminals · CPC title