Sharing resources between wireless networks

Patent metadata

Field	Value
Publication number	US-10158617-B2
Application number	US-201816027007-A
Country	US
Kind code	B2
Filing date	Jul 3, 2018
Priority date	Feb 2, 2012
Publication date	Dec 18, 2018
Grant date	Dec 18, 2018

Abstract

A radio transmitter is provided with a data symbol vector produced from data bits mapped to a constellation set and a coding matrix generated from a secret key and an information signal. The data symbol vector is multiplied with the coding matrix to produce a coded signal comprising distorted data symbols. The radio transmitter generates a transmit signal from the precoded signal, which is transmitted to a receiver that separates the coding matrix from the data symbol vector and decodes the information signal from the coding matrix. Information from the data symbol vector can be communicated in a cellular network while information encoded in the coding matrix provides for communicating in a peer-to-peer network by using the cellular signal as a carrier for the peer-to-peer communications.

First claim

The invention claimed is:

1. A method, comprising:
providing a data symbol vector produced from data bits mapped to a constellation set; generating a coding matrix from a secret key and an information signal;
multiplying the data symbol vector with the coding matrix to produce a precoded signal comprising distorted data symbols; and
transmitting the precoded signal to a receiver that separates the coding matrix from the data symbol vector and decodes the information signal from the coding matrix.

2. The method recited in claim 1 , wherein the secret key is computed from channel estimates.

3. The method recited in claim 1 , wherein the coding matrix rotates data symbol phases in the data symbol vector.

4. The method recited in claim 1 , wherein the coding matrix comprises a power matrix.

5. The method recited in claim 1 , wherein the data symbol vector comprises a signal to be retransmitted.

6. The method recited in claim 1 , wherein the transmitting comprises generating at least one of an Orthogonal Frequency Division Multiplexing (OFDM) signal and a Multiple Input Multiple Output-OFDM signal.

7. The method recited in claim 1 , wherein the data symbol vector is configured for communication in a cellular network and the information signal is communicated in a peer-to-peer network.

8. An apparatus, comprising:
a processor; and
a non-transitory computer-readable memory communicatively coupled to the processor, the memory including a set of instructions stored thereon and executable by the processor for:
providing a data symbol vector produced from data bits mapped to a constellation set; generating a coding matrix from a secret key and an information signal;
multiplying the data symbol vector with the coding matrix to produce a precoded signal comprising distorted data symbols; and
generating a transmit signal from the precoded signal, the transmit signal is transmitted to a receiver that separates the coding matrix from the data symbol vector and decodes the information signal from the coding matrix.

9. The apparatus recited in claim 8 , wherein the secret key is computed from channel estimates.

10. The apparatus recited in claim 8 , wherein the coding matrix rotates data symbol phases in the data symbol vector.

11. The apparatus recited in claim 8 , wherein the coding matrix comprises a power matrix.

12. The apparatus recited in claim 8 , wherein the data symbol vector comprises a signal to be retransmitted.

13. The apparatus recited in claim 8 , wherein the transmit signal comprises at least one of an Orthogonal Frequency Division Multiplexing (OFDM) signal and a Multiple Input Multiple Output-OFDM signal.

14. The apparatus recited in claim 8 , wherein the data symbol vector is configured for communication in a cellular network and the information signal is communicated in a peer-to-peer network.

15. A non-transitory computer program product, comprising a computer readable hardware storage device having computer readable program code stored therein, said program code containing instructions executable by one or more processors of a computer system to implement a method comprising:
providing a data symbol vector produced from data bits mapped to a constellation set; generating a coding matrix from a secret key and an information signal;
multiplying the data symbol vector with the coding matrix to produce a precoded signal comprising distorted data symbols; and
generating a transmit signal from the precoded signal, the transmit signal is transmitted to a receiver that separates the coding matrix from the data symbol vector and decodes the information signal from the coding matrix.

16. The computer program product recited in claim 15 , wherein the secret key is computed from channel estimates.

17. The computer program product recited in claim 15 , wherein the coding matrix rotates data symbol phases in the data symbol vector.

18. The computer program product recited in claim 15 , wherein the coding matrix comprises a power matrix.

19. The computer program product recited in claim 15 , wherein the data symbol vector comprises a signal to be retransmitted.

20. The computer program product recited in claim 15 , wherein the transmit signal comprises at least one of an Orthogonal Frequency Division Multiplexing (OFDM) signal and a Multiple Input Multiple Output-OFDM signal.

21. The computer program product recited in claim 15 , wherein the data symbol vector is configured for communication in a cellular network and the information signal is communicated in a peer-to-peer network.

Assignees

• Genghiscomm Holdings Llc

Inventors

• Shattil Steve J

Classifications

• H04W12/08

  Access security · CPC title

• H04W72/541

  using the level of interference · CPC title

• H04L5/0055

  Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861) · CPC title

• H04L9/0875

  based on channel impulse response [CIR] · CPC title

• H04B7/0456

  Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting · CPC title