Method and system for message transmission and reception
Wireless devices may contain multiple radio transceivers, each conforming to different communication protocols. A first transceiver conforming to a first communication protocol in a first wireless device may be able to receive, detect, and/or decode messages transmitted by a second transceiver in a second wireless device conforming to a second communication protocol. The first transceiver may communicate received, detected, and/or decoded information to a different transceiver in the same first wireless device, thus enabling the collocated transceivers to work in concert efficiently. A wideband transceiver using a set of multiple sub-channels in parallel may receive, detect, and/or decode messages transmitted by a narrowband transceiver using a set of multiple channels serially, thereby reducing scan time and power consumption.
1. A dual radio wireless communication device comprising:
a first wireless transceiver conforming to a first communication protocol and a second wireless transceiver conforming to a second communication protocol;
wherein the first communication protocol uses a series of frequency channels, one frequency channel at a time, from a set of frequency channels, and the second communication protocol uses a plurality of frequency sub-channels in parallel from a set of frequency sub-channels,
and further wherein, the first wireless transceiver is configured to receive a communication message via the one at a time frequency channel, and the second wireless transceiver is configured to transmit a response to the communication message by replicating a power spectrum of the response to the communication message conforming to the first communication protocol on one or more frequency sub-channels,
and yet further wherein, the second wireless transceiver comprises:
a Gaussian Frequency Shift Key (GFSK) modulation block controlled by the response to the communication message;
an inverse Fast Fourier Transform (IFFT) block used to create a carrier frequency spectrum conforming to the first communication protocol; and
a mixer for combining outputs of the GFSK modulation block and the IFFT block.
2. The device of claim 1 , wherein the first communication protocol is a frequency hopping spread spectrum protocol and the second communication protocol is an orthogonal frequency division multiplexing protocol.
3. The device of claim 1 , wherein the first communication protocol is a Bluetooth® protocol and the second communication protocol is an IEEE 802.11 wireless protocol.
4. The device of claim 1 , wherein the second wireless transceiver is configured to transmit the response to the communication message concurrently on at least two frequency sub-channels in the set of frequency sub-channels.
5. The device of claim 3 , wherein the IEEE 802.11 wireless protocol is used to replicate the response to the communication message to at least two Bluetooth® devices via separate sub-channels in the set of frequency sub-channels.
6. The device of claim 1 , wherein the communication message is an inquiry message.
7. The device of claim 1 , wherein the communication message is a page message.
8. A method for operating a dual radio wireless communication device, comprising:
receiving a communication message using a first wireless transceiver conforming to a first communication protocol that uses a series of frequency channels, one at a time, from a set of frequency channels; and
transmitting a response to the communication message using a second wireless transceiver conforming to a second communication protocol that uses a plurality of frequency sub-channels in parallel from a set of frequency sub-channels, said transmitting including replicating a power spectrum of the response to the communication message conforming to the first communication protocol on one or more frequency sub-channels,
wherein said replicating the power spectrum comprises:
controlling a Gaussian Frequency Shift Key (GFSK) modulation block by the response to the communication message;
using an inverse Fast Fourier Transform (IFFT) block to create a carrier frequency spectrum conforming to the first communication protocol;
combining outputs of the GFSK modulation block and the IFFT block; and
controlling the second wireless transceiver to wirelessly transmit the combined outputs.
9. The method of claim 8 , wherein the first communication protocol is a frequency hopping spread spectrum protocol and the second communication protocol is an orthogonal frequency division multiplexing protocol.
10. The method of claim 8 , wherein the first communication protocol is a Bluetooth® protocol and the second communication protocol is an IEEE 802.11 wireless protocol.
11. The method of claim 8 , wherein the second wireless transceiver transmits the response to the communication message concurrently on at least two frequency sub-channels in the set of frequency sub-channels.
12. The method of claim 10 , wherein the IEEE 802.11 wireless protocol is used to replicate the response to the communication message to at least two Bluetooth® devices via separate sub-channels in the set of frequency sub-channels.
13. The method of claim 8 , wherein the communication message is an inquiry message.
14. The method of claim 8 , wherein the communication message is a page message.
15. A non-transitory, computer-readable medium storing computer-executable instructions for a dual radio wireless communication device, the instructions when executed by a processor cause the processor to execute a process comprising:
receiving a communication message using a first wireless transceiver conforming to a first communication protocol that uses a series of frequency channels, one at a time, from a set of frequency channels; and
transmitting a response to the communication message using a second wireless transceiver conforming to a second communication protocol that uses a plurality of frequency sub-channels in parallel from a set of frequency sub-channels, said transmitting including replicating a power spectrum of the response to the communication message conforming to the first communication protocol on one or more frequency sub-channels,
wherein said replicating the power spectrum comprises:
controlling a Gaussian Frequency Shift Key (GFSK) modulation block by the response to the communication message;
using an inverse Fast Fourier Transform (IFFT) block to create a carrier frequency spectrum conforming to the first communication protocol;
combining outputs of the GFSK modulation block and the IFFT block; and
controlling the second wireless transceiver to wirelessly transmit the combined outputs.
16. The computer-readable medium of claim 15 , wherein the first communication protocol is a frequency hopping spread spectrum protocol and the second communication protocol is an orthogonal frequency division multiplexing protocol.
17. The computer-readable medium of claim 15 , wherein the first communication protocol is a Bluetooth® protocol and the second communication protocol is an IEEE 802.11 wireless protocol.
18. The computer-readable medium of claim 15 , wherein the second wireless transceiver transmits the response to the communication message concurrently on at least two frequency sub-channels in the set of frequency sub-channels.
19. The computer-readable medium of claim 17 , wherein the IEEE 802.11 wireless protocol is used to replicate the response to the communication message to at least two Bluetooth® devices via separate sub-channels in the set of frequency sub-channels.
20. The computer-readable medium of claim 15 , wherein the communication message is an inquiry message.
21. The computer-readable medium of claim 15 , wherein the communication message is a page message.
22. A method for operating a dual radio wireless communication device, comprising:
receiving a communication message using a first wireless transceiver conforming to a Bluetooth® protocol; and
transmitting a response to the communication message using a second wireless transceiver conforming to an IEEE 802.11 wireless protocol by replicating a power spectrum of the response to the communication message conforming to the Bluetooth® protocol on one or more frequency sub-channels of IEEE 802.11 sub-channels,
wherein said replicating the power spectrum comprises:
controlling a Gaussian Frequency Shift Key (GFSK) modulation block by the response to the communication message;
using an inverse Fast Fourier Transform (IFFT) block to create a carrier frequency spectrum conforming to the Bluetooth® protocol;
combining outputs of the GFSK modulation block and the IFFT block; and
controlling the second wireless transceiver to wirelessly transmit the combined outputs.
23. The method of claim 22 , wherein the IEEE 802.11 wireless protocol is used to replicate the response to the communication message to at least two Bluetooth® devices via separate IEEE 802.11 sub-channels.
24. The method of claim 22 , wherein using the IFFT block to create a carrier frequency spectrum further comprises:
selecting which IEEE 802.11 sub-channels shall be used to transmit; and
transmitting the outputs conforming to the Bluetooth® protocol on those sub-channels.
25. The method of claim 24 , further comprising at least two sub-channels being selected.