Selective filtering to reduce interferences in Wi-Fi communications

1 . A method comprising:

operating a first radio and a second radio of a wireless networking device on a first channel within a first sub-band and a second sub-band of a first frequency band, wherein the first and second radios are dedicated to operating over the first sub-band and the second sub-band, respectively;

operating a third radio and a fourth radio of the wireless networking device on a second channel within a third sub-band and a fourth sub-band of a second frequency band, wherein the first sub-band and one of the third or fourth sub-band are immediately adjacent to an inter-band gap separating the first frequency band and the second frequency band, and wherein the third and fourth radios are dedicated to operating over the third sub-band and the fourth sub-band, respectively;

operating a fifth radio of the wireless networking device on a third channel within a third sub-band of the first frequency band;

selecting one of a first filter or a second filter based on the first channel, wherein a collective passband of the first filter and the second filter is equivalent to the first sub-band;

selecting one of a third filter or a fourth filter based on the second channel, wherein a collective passband of the third filter and the fourth filter is equivalent to one of the third or fourth sub-band;

communicating a first signal over the first channel through a selected one of the first filter or the second filter;

communicating a second signal over the second channel through a selected one of the third filter or the fourth filter to avoid communication interference between the first channel and the second channel; and

communicating a third signal over the third channel through a fifth filter to avoid communication interference among the first channel, the second channel, and the third channel.

2 . The method of claim 1 , wherein the first filter ends at an ending frequency of the first frequency band, and the second filter begins at a starting frequency of the first sub-band, and wherein the first filter is narrower than the second filter.

3 . The method of claim 1 , wherein the third filter begins at a starting frequency of the second frequency band, and the fourth filter ends at an ending frequency of the one of the third or fourth sub-band, and wherein the third filter is narrower than the fourth filter.

4 . The method of claim 1 , wherein selecting one of the first filter or the second filter comprises:

selecting the first filter in response to determining that the first filter encompasses the first channel; and

selecting the second filter in response to determining that the first filter does not encompass the first channel.

5 . The method of claim 1 , wherein selecting one of the third filter or the fourth filter comprises:

selecting the third filter in response to determining that the third filter encompasses the second channel; and

selecting the fourth filter in response to determining that the third filter does not encompass the second channel.

6 . The method of claim 1 , wherein the first filter and the second filter have overlapping passbands.

7 . The method of claim 1 , wherein the third filter and the fourth filter have overlapping passbands.

8 . The method of claim 1 , further comprising:

operating a sixth radio of the wireless networking device on a fourth channel within a fourth sub-band of the first frequency band; and

communicating a fourth signal over the fourth channel through a sixth filter to avoid communication interference among the first channel, the second channel, the third channel, and the fourth channel.

9 . The method of claim 1 , wherein the first frequency band and the second frequency band are the 5 GHz band and the 6 GHz band, respectively, specified in one or more of the Institute of Electrical and Electronics Engineers (IEEE) 802.11 Specifications.

10 . The method of claim 9 , wherein:

the first sub-band ranges from 5490 MHz to 5895 MHz;

the second sub-band ranges from 5945 MHz to 6425 MHz;

the first filter ranges from 5735 MHz to 5895 MHZ;

the second filter ranges from 5940 MHz to 5835 MHz;

the third filter ranges from 5945 MHz to 6265 MHz; and

the fourth filter ranges from 6105 MHz to 6425 MHz.

11 . An access point, comprising:

a first radio dedicated to operation on a first channel within a first sub-band of a first frequency band;

a second radio dedicated to operation on the first channel within a second sub-band of the first frequency band;

a third radio dedicated to operation on a second channel within a third sub-band of a second frequency band;

a fourth radio dedicated to operation on the second channel within a fourth sub-band of the second frequency band, wherein the first sub-band and one of the third or fourth sub-band are immediately adjacent to an inter-band gap separating the first frequency band and the second frequency band;

a fifth radio operable on a third channel within a third sub-band of the first frequency band;

a sixth radio operable on a fourth channel within a fourth sub-band of the second frequency band; and

a seventh radio operable on a fifth channel in a third frequency band;

a first filter and a second filter coupled to the first radio and having a collective passband equivalent to the first sub-band;

a third filter and a fourth filter coupled to the second radio and having a collective passband equivalent to the one of the third or fourth sub-band; and

a control unit coupled to the first radio, the second radio, the third radio, the fourth radio, the first filter, the second filter, the third filter, and the fourth filter, wherein the control unit is configured to communicate a first signal over the first channel through a selected one of the first filter or the second filter, and communicate a second signal over the second channel a selected one of the third filter or the second filter.

12 . The access point of claim 11 , wherein the control unit is further configured to communicate a third signal, a fourth signal, and a fifth signal via a fifth filter, a sixth filter, and a seventh filter, respectively.

13 . The access point of claim 11 , wherein the first frequency band, the second frequency band, and the third frequency band are the 5 GHz band, the 6 GHz band, and the 2.4 GHz band, respectively, defined in one or more of the Institute of Electrical and Electronics Engineers (IEEE) 802.11 Specifications.

14 . The access point of claim 11 , wherein:

the first sub-band ranges from 5490 MHz to 5895 MHz;

the second sub-band ranges from 5945 MHz to 6425 MHz;

the first filter ranges from 5735 MHz to 5895 MHz;

the second filter ranges from 5940 MHz to 5835 MHZ;

the third filter ranges from 5945 MHz to 6265 MHz; and

the fourth filter ranges from 6105 MHz to 6425 MHz.