SYSTEMS AND METHODS FOR IMPLEMENTING A HIGH THROUGHPUT MODE FOR A MOCA DEVICE

• US 20110206042A1
• Filed: 02/22/2011
• Published: 08/25/2011
• Est. Priority Date: 02/23/2010
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Shusterman, Eliahu, Tarrab, Moshe, Kliger, Avi, Ohana, Yitshak
• Granted Patent: US 8,514,860 B2
• Time in Patent Office: Days
• US Class Current: 370/389
• CPC Class Codes: H04L 12/2801 Broadband local area networks
• CPC Class Codes: H04L 27/2613 Structure of the reference signals
• CPC Class Codes: H04L 27/26134 Pilot insertion in the transmitter chain, e.g. pilot overlapping with data, insertion in time or frequency domain
• CPC Class Codes: H04L 49/3009 Header conversion, routing tables or routing tags

Abstract

Systems and methods for providing a high throughput mode for a MoCA device are provided. An electronic device configured for use as a node in a home network is provided. The electronic device may include a preamble generator block. The preamble generator block may include a time domain preamble generator. The time domain preamble generator may be configured to generate a periodic preamble for a MoCA signal. The preamble generator block may also include a doubling circuit configured to double the periodic preamble. Such doubling may preferably obtain an increased maximum periodic preamble.

Claims

1. An electronic device configured for use as a node in a home network, said home network comprising MoCA 1.1 compatible devices, said electronic device comprising:

a preamble generator, said preamble generator configured to generate a periodic preamble for a MoCA signal;

a doubling circuit configured to double the periodic preamble.

2. The device of claim 1 wherein the doubling circuit comprises a first signal path and a second signal path, the first signal path that transmits the periodic preamble generated by the preamble generator, and the second signal path that also transmits the periodic preamble generated by the preamble generator, and a switching circuit that switches the output of the transmitter block from the first signal path to the second signal path.

3. The device of claim 1 wherein the doubling circuit comprises a first signal path and a second signal path, the first signal path that transmits the periodic preamble generated by the preamble generator, and the second signal path that transmits a zero signal, and a switching circuit that switches the output of the transmitter block from the first signal path to the second signal path.

4. The device of claim 1, the doubling circuit further comprising a first multiplexor and a second multiplexor, wherein the preamble generator generates an output signal that forms an input signal for the first multiplexor and an input signal for the second multiplexor, the first multiplexor generates an output signal that forms a second input signal for the second multiplexor, and the second multiplexor selects an output from the output signal of the preamble generator and the output signal of the first multiplexor.

5. The device of claim 4, wherein the first multiplexor further comprises a second input signal formed from a zero signal and selects an output from the output of the preamble generator and the zero signal.

6. The device of claim 1, further comprising a preamble processor configured to receive the periodic preamble for a MoCA signal, the receiver further configured to reduce the frequency of the periodic preamble in order to obtain a legacy periodic preamble, said receiver comprising a high throughput preamble processor.

7. The device of claim 6, wherein the high throughput preamble processor comprises a legacy preamble processor, and a switching circuit wherein a switching of the high throughput preamble processor is implemented by the switching circuit, such that, in a first mode, the switching circuit is closed, and in a high throughput mode, the switching circuit is configured to present alternate samples to the preamble processor.

8. An electronic device configured for use as a node in a home network, said electronic device comprising:

a preamble processor block, said preamble processor block comprising;

a legacy preamble processor; and

a switching circuit;

wherein determination of an operational mode of the preamble processor block is implemented by the switching circuit, such that, in a first mode, the switching circuit is closed and the operational mode of the high throughput preamble processor is a legacy operational mode, and in a high throughput mode, the operational mode of the preamble processor is a high throughput operational mode.

9. The electronic device of claim 8 further comprising a preamble generator block.

10. The electronic device of claim 9 wherein the preamble generator block is configured to generate a periodic preamble for a MoCA signal;

and a doubling circuit configured to double the periodic preamble.

11. The electronic device of claim 8, wherein, when the switching circuit is maintained in a closed position, the electronic device operates in a normal mode.

12. The electronic device of claim 8, wherein, when the switching circuit is switched at a frequency of 100 MHz, the electronic device operates in a high throughput mode.

13. A method for generating a periodic preamble in home network, said method using an electronic device, said method comprising:

generating a periodic preamble for a MoCA packet; and

increasing the size of the periodic preamble in order to obtain an increased maximum periodic preamble.

14. The method of claim 13 further comprising increasing the size of the periodic preamble by:

generating the periodic preamble;

inputting the periodic preamble into a multiplexor;

generating a zero signal;

inputting the zero signal into the multiplexor; and

using a switching circuit that switches the output of the multiplexor from the periodic preamble to the zero signal.

15. The method of claim 13 further comprising increasing the size of the periodic preamble by:

transmitting the periodic preamble along a first signal path;

inputting the periodic preamble into a multiplexor;

transmitting the periodic preamble along a second signal path; and

inputting the periodic preamble into the multiplexor using the second signal path; and

using a switching circuit that switches the output of the multiplexor from the periodic preamble transmitted along the first signal path to the periodic preamble transmitted along the first signal path.

16. The method of claim 13 further comprising increasing the size of the periodic preamble by:

generating a zero signal; and

generating an increased periodic preamble by alternating samples from the periodic preamble and the zero signal.

17. The method of claim 13 further comprising increasing the size of the periodic preamble by generating an increased periodic preamble by sampling each sample from the periodic preamble twice.

18. The method of claim 13, further comprising receiving the periodic preamble and reducing the frequency of the periodic preamble in order to obtain a legacy periodic preamble.

19. A method for receiving a periodic preamble in an electronic device configured for use as a node in a home network, the method comprising:

operating a high throughput preamble processor using a switching circuit, the operating comprising;

in a first mode, closing the switching circuit to operate the high throughput preamble processor in a legacy operational mode; and

in a second mode, switching the switching circuit at 100 MHz to operate the high throughput preamble processor in a high throughput mode.

20. The method of claim 19 further comprising generating a periodic preamble for a MoCA signal;

and using a doubling circuit to double the size of the periodic preamble in order to obtain an increased maximum cyclic prefix.