Multi radio wireless LAN networks

• US 9,888,523 B2
• Filed: 04/05/2016
• Issued: 02/06/2018
• Est. Priority Date: 11/14/2013
• Status: Active Grant

• Current Assignee: NETGEAR, Inc.
• Original Assignee: NETGEAR, Inc.
• Inventors: Amini, Peiman, Emmanuel, Joseph Amalan Arul, Yu, Shun-Liang
• Primary Examiner(s): Nguyen, Phuongchau Ba
• Application Number:
  US15/091,542
• Publication Number:
  US 20160227604A1
• Time in Patent Office: 672 Days
• Field of Search: 370329, 370338
• CPC Class Codes: H04B 1/0057 using diplexing or multiplexing filters for selecting the desired band
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

Systems and methods for improving wireless access point communications are provided. Some embodiments contemplate filtering operations such that two or more radios can be used in the 5 GHz or 2.4 GHz band without interfering with each other. Some embodiments employ discrete Low Noise Amplifiers (LNA) and Power Amplifiers (PA) as well as frontend modules. In some examples, filtering may be primarily used on the receiving side to filter out other signals in 5 GHz before they are amplified by an external LNA or LNAs, e.g., as integrated in a WLAN chipset. Filtering may also be performed on the transmit side in some embodiments.

Claims

1. A computer-implemented method comprising:

associating a first communication subchannel with a first bandwidth region;

associating a second communication subchannel with a second bandwidth region;

transmitting and receiving a first dataset associated with the first communication subchannel in the first bandwidth region;

transmitting and receiving a second dataset associated with the second communication subchannel in the second bandwidth region;

assessing a load imposed on the first communication subchannel and the second communication subchannel; and

reassigning at least a portion of the first communication subchannel based on the assessment of the load;

wherein the first bandwidth region and the second bandwidth region are receivable by a WLAN device operating in approximately the 5 GHz bandwidth region; and

wherein the first bandwidth region and the second bandwidth regions are non-overlapping subdivisions of the 5 GHz bandwidth region encompassing one or more center frequencies and separated by a cutoff region.

2. The computer-implemented method of claim 1, wherein signals received by the WLAN device that are at frequencies in the cutoff region are excluded before being amplified.

3. The computer-implemented method of claim 1, further comprising:

applying a bandpass filter (BPF) to at least a portion of the first dataset and the second dataset.

4. The computer-implemented method of claim 3, wherein the BPF is configured to filter the first and second subchannel bands and is configured to reject, at least in part, a band above 5400 MHz.

5. The computer-implemented method of claim 1, wherein the first subchannel includes a region between 5170 and 5330 MHz and the second subchannel includes a region between 5490 MHz and 5835 MHz.

6. A non-transitory computer-readable medium comprising

instructions executable by at least one processor to perform a method comprising:

associating a first communication subchannel with a first bandwidth region;

associating a second communication subchannel with a second bandwidth region;

transmitting and receiving a first dataset associated with the first communication subchannel in the first bandwidth region;

transmitting and receiving a second dataset associated with the second communication subchannel in the second bandwidth region;

assessing a load imposed on the first communication subchannel and the second communication subchannel; and

reassigning at least a portion of the first communication subchannel based on the assessment of the load;

wherein the first bandwidth region and the second bandwidth region are receivable by a WLAN device operating in approximately the 5 GHz bandwidth region; and

wherein the first bandwidth region and the second bandwidth regions are non-overlapping subdivisions of the 5 GHz bandwidth region encompassing one or more center frequencies and separated by a cutoff region.

7. The non-transitory computer-readable medium of claim 6, wherein signals received by the WLAN device that are at frequencies in the cutoff region are excluded before being amplified.

8. The non-transitory computer-readable medium of claim 6 wherein the instructions are executable by the at least one processor to perform a method further comprising:

applying a bandpass filter (BPF) to at least a portion of the first dataset and the second dataset.

9. The non-transitory computer-readable medium of claim 8, wherein the BPF is configured to filter the first and second subchannel bands and is configured to reject, at least in part, a band above 5400 MHz.

10. The non-transitory computer-readable medium of claim 6, wherein the first subchannel includes a region between 5170 and 5330 MHz and the second subchannel includes a region between 5490 MHz and 58385 MHz.

11. The non-transitory computer-readable medium of claim 6, wherein the non-transitory computer-readable medium is in communication with one of a USB or Firewire peripheral.

12. A system comprising:

one or more processors;

a memory unit having instructions stored thereon, which when executed by the one or more processors cause the system to;

associate a first communication subchannel with a first bandwidth region;

associate a second communication subchannel with a second bandwidth region;

transmit and receive a first dataset associated with the first communication subchannel in the first bandwidth region;

transmit and receive a second dataset associated with the second communication subchannel in the second bandwidth region;

assess a load imposed on the first communication subchannel and the second communication subchannel; and

reassign at least a portion of the first communication subchannel based on the assessment of the load;

wherein the first bandwidth region and the second bandwidth region are receivable by a WLAN device operating in approximately the 5 GHz bandwidth region; and

wherein the first bandwidth region and the second bandwidth regions are non-overlapping subdivisions of the 5 GHz bandwidth region encompassing one or more center frequencies and separated by a cutoff region.

13. The system of claim 12, wherein signals received by the WLAN device that are at frequencies in the cutoff region are excluded before being amplified.

14. The system of claim 12, wherein the memory unit has further instructions stored thereon, which when executed by the one or more processors cause the system to further:

apply a bandpass filter (BPF) to at least a portion of the first dataset and the second dataset.

15. The system of claim 14, wherein the BPF is configured to filter the first and second subchannel bands and is configured to reject, at least in part, a band above 5400 MHz.

16. The system of claim 12, wherein the first subchannel includes a region between 5170 and 5330 MHz and the second subchannel includes a region between 5490 MHz and 5835 MHz.