Systems and methods for increasing preambles

• US 8,953,594 B2
• Filed: 07/15/2013
• Issued: 02/10/2015
• 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: Tarrab, Moshe, Shusterman, Eliahu, Ohana, Yitshak, Kliger, Avi
• Primary Examiner(s): Ton, Dang
• Assistant Examiner(s): Ambaye, Mewale
• Application Number:
  US13/942,559
• Publication Number:
  US 20130301655A1
• Time in Patent Office: 575 Days
• Field of Search: 370/389, 370/208
• 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 increasing preambles are provided. In some aspects, an electronic device configured for use as a node in a home network is provided. The electronic device includes a preamble generator configured to generate an outbound preamble for a data signal. The electronic device also includes a preamble increasing circuit configured to increase a size of the outbound preamble based on a switching signal.

Claims

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

a preamble generator configured to generate an outbound preamble for a data signal; and

a preamble increasing circuit comprising;

a first multiplexor configured to receive the outbound preamble from the preamble generator and a preamble increasing signal, the first multiplexor being configured to mux the received outbound preamble with the preamble increasing signal to generate a first output, the first output comprising the received outbound preamble or the preamble increasing signal; and

a second multiplexor configured to receive the outbound preamble from the preamble generator and the first output from the first multiplexor, the second multiplexor being configured to mux the received outbound preamble with the first output based on a switching signal to generate a second output, the second output comprising the received outbound preamble or the first output,

wherein the preamble increasing circuit is configured to increase a size of the outbound preamble based on the switching signal.

2. The device of claim 1, wherein the preamble increasing circuit further comprises a switching circuit configured to generate the switching signal.

3. The electronic device of claim 2, wherein the switching circuit is configured to generate the switching signal such that the second output from the second multiplexor comprises the outbound preamble received by the second multiplexor from the preamble generator.

4. The electronic device of claim 2, wherein the switching circuit is configured to generate the switching signal such that the second output from the second multiplexor alternates between the outbound preamble received by the second multiplexor from the preamble generator and the first output from the first multiplexor.

5. The electronic device of claim 4, wherein the switching circuit is configured to generate the switching signal such that the second output from the second multiplexor alternates between the outbound preamble received by the second multiplexor from the preamble generator and the first output from the first multiplexor according to a switching frequency.

6. The electronic device of claim 5, wherein the first output from the first multiplexor comprises the outbound preamble received from the preamble generator.

7. The electronic device of claim 1, wherein the outbound preamble is a periodic preamble.

8. The electronic device of claim 1, wherein the preamble increasing signal comprises a zero signal.

9. The electronic device of claim 1, wherein muxing the received outbound preamble with the preamble increasing signal to generate the first output comprises:

selecting one of the received outbound preamble or the preamble increasing signal; and

outputting the selected one of the received outbound preamble or the preamble increasing signal as the first output.

10. The electronic device of claim 1, wherein muxing the received outbound preamble with the first output based on the switching signal to generate the second output comprises:

selecting one of the received outbound preamble or the first output based on the switching signal; and

outputting the selected one of the received outbound preamble or the first output as the second output.

11. The electronic device of claim 1, wherein the preamble increasing circuit is configured to double the size of the outbound preamble based on the switching signal.

12. The electronic device of claim 1, wherein the data signal comprises a Multimedia Over Coax Alliance (MoCA) signal.

13. The electronic device of claim 1, further comprising a preamble receiver comprising:

a switching circuit configured to receive an inbound preamble according to a first rate or a second rate, the second rate being greater than the first rate, the inbound preamble comprising one or more inbound samples, the switching circuit being configured to switch between a closed configuration and an open configuration; and

a preamble processor coupled to the switching circuit,

wherein the switching circuit is configured to provide a received inbound sample to the preamble processor in the closed configuration and to discard a received inbound sample in the open configuration,

wherein the switching circuit is configured to remain in the closed configuration if the inbound preamble is received according to the first rate, and

wherein the switching circuit is configured to switch between the closed configuration and the open configuration according to a switching frequency if the inbound preamble is received according to the second rate.

14. A method comprising:

generating an outbound preamble for a data signal;

receiving, by a first multiplexor, the outbound preamble and a preamble increasing signal;

muxing, by the first multiplexor, the received outbound preamble with the preamble increasing signal to generate a first output, the first output comprising the received outbound preamble or the preamble increasing signal;

receiving, by a second multiplexor, the outbound preamble and the first output; and

muxing, by the second multiplexor, the received outbound preamble with the first output based on a switching signal to generate a second output, the second output comprising the received outbound preamble or the first output,

wherein a size of the outbound preamble is increased based on the switching signal.

15. The method of claim 14, further comprising generating the switching signal.

16. The method of claim 15, wherein the switching signal is generated such that the second output alternates between the outbound preamble received by the second multiplexor and the first output.

17. The method of claim 16, wherein the switching signal is generated such that the second output alternates between the outbound preamble received by the second multiplexor and the first output according to a switching frequency.

18. The method of claim 14, wherein the preamble increasing signal comprises a zero signal, and wherein the data signal comprises a Multimedia Over Coax Alliance (MoCA) signal.

19. The method of claim 14, wherein muxing, by the first multiplexor, the received outbound preamble with the preamble increasing signal to generate the first output comprises:

selecting one of the received outbound preamble or the preamble increasing signal; and

outputting the selected one of the received outbound preamble or the preamble increasing signal as the first output.

20. An electronic device comprising:

a preamble generator configured to generate an outbound preamble for a data signal;

a preamble increasing circuit comprising;

a first multiplexor configured to receive the outbound preamble from the preamble generator and a preamble increasing signal, the first multiplexor being configured to mux the received outbound preamble with the preamble increasing signal to generate a first output, the first output comprising the received outbound preamble or the preamble increasing signal; and

a second multiplexor configured to receive the outbound preamble from the preamble generator and the first output from the first multiplexor, the second multiplexor being configured to mux the received outbound preamble with the first output based on a switching signal to generate a second output, the second output comprising the received outbound preamble or the first output,

wherein the preamble increasing circuit is configured to increase a size of the outbound preamble based on the switching signal; and

a preamble receiver comprising;

a switching circuit configured to receive an inbound preamble according to a first rate or a second rate, the second rate being greater than the first rate, the inbound preamble comprising one or more inbound samples, the switching circuit being configured to switch between a closed configuration and an open configuration; and

a preamble processor coupled to the switching circuit,

wherein the switching circuit is configured to provide a received inbound sample to the preamble processor in the closed configuration and to discard a received inbound sample in the open configuration,

wherein the switching circuit is configured to remain in the closed configuration if the inbound preamble is received according to the first rate, and

wherein the switching circuit is configured to switch between the closed configuration and the open configuration according to a switching frequency if the inbound preamble is received according to the second rate.