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Can RPi4 run simultaneously on dual band (WiFi 2.4GHz / 5GHz)?

Is it possible to use Raspberry Pi 3 B+ Dual Band WiFi Simultaneously?Dual band WiFi stickWhich RF transceiver to use for a network using Rpi or Arduino?making WiFi adapter run in dual mode - STA and APMulti-radio Raspberry Pi 3Is it possible to use Raspberry Pi 3 B+ Dual Band WiFi Simultaneously?Is it possible to simultaneously use the dual band(2.4 Ghz and 5 Ghz) of Raspberry pi 3 B+ to create an AP?Swapping between wifi client and access point?Pi 3b+, integrated wifi loses connection on 5ghz network with carrier lost

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I read in the post that RPi 3 could not manage to operate on both bands simultaneously. Can RPi4 do that? We are planning to create mesh network with Rpi nodes. With single band operation, the throughput drops drastically, as the node count increases.

wifi

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3

I read in the post that RPi 3 could not manage to operate on both bands simultaneously. Can RPi4 do that? We are planning to create mesh network with Rpi nodes. With single band operation, the throughput drops drastically, as the node count increases.

wifi

share|improve this question

edited 46 mins ago

tlfong01

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I read in the post that RPi 3 could not manage to operate on both bands simultaneously. Can RPi4 do that? We are planning to create mesh network with Rpi nodes. With single band operation, the throughput drops drastically, as the node count increases.

wifi

share|improve this question

edited 46 mins ago

tlfong01

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asked 8 hours ago

vanangamudivanangamudi

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edited 46 mins ago

tlfong01

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vanangamudivanangamudi

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edited 46 mins ago

tlfong01

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edited 46 mins ago

tlfong01

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edited 46 mins ago

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First to clarify: you are talking about RPi 3B, the link you have given is talking about a RPi 3B+. This is an important difference. RPi 3B only supports the 2.4 GHz band so there is no question if it can also use a 5 GHz band. It can't. RPi 3B+ supports dual band. The RPi 4B uses the same on-board wifi chip than RPi 3B+ so it also supports dual band.

With iw list on RPi 4B you will find:

valid interface combinations:
 * # managed <= 1, # P2P-device <= 1, # P2P-client, P2P-GO <= 1,
 total <= 3, #channels <= 2
 * # managed <= 1, # AP <= 1, # P2P-client <= 1, # P2P-device <= 1,
 total <= 4, #channels <= 1

This tells you what combinations are possible. For example you can make in total 3 connections, maybe managed, P2P-client and P2P-GO on two channels (one on 2.4 GHz and one on 5 GHz). But with an access point (AP) you can have 4 connections in total but only on one channel.

If you do not find a possible combination you always can use an additional USB/WiFi dongle.

share|improve this answer

answered 7 hours ago

IngoIngo

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1

On the Raspberry Pi 4, wireless support is provided by the same Cypress CYW43455 chip as on the Pi 3 B+. A limitation of this chip is that it cannot do Real Simultaneous Dual Band (RSDB). You could add a USB wifi module, to have two devices, each on a different band.

share|improve this answer

edited 4 hours ago

answered 7 hours ago

Michael HarveyMichael Harvey

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2

First to clarify: you are talking about RPi 3B, the link you have given is talking about a RPi 3B+. This is an important difference. RPi 3B only supports the 2.4 GHz band so there is no question if it can also use a 5 GHz band. It can't. RPi 3B+ supports dual band. The RPi 4B uses the same on-board wifi chip than RPi 3B+ so it also supports dual band.

With iw list on RPi 4B you will find:

valid interface combinations:
 * # managed <= 1, # P2P-device <= 1, # P2P-client, P2P-GO <= 1,
 total <= 3, #channels <= 2
 * # managed <= 1, # AP <= 1, # P2P-client <= 1, # P2P-device <= 1,
 total <= 4, #channels <= 1

This tells you what combinations are possible. For example you can make in total 3 connections, maybe managed, P2P-client and P2P-GO on two channels (one on 2.4 GHz and one on 5 GHz). But with an access point (AP) you can have 4 connections in total but only on one channel.

If you do not find a possible combination you always can use an additional USB/WiFi dongle.

share|improve this answer

answered 7 hours ago

IngoIngo

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add a comment
 | 

2

First to clarify: you are talking about RPi 3B, the link you have given is talking about a RPi 3B+. This is an important difference. RPi 3B only supports the 2.4 GHz band so there is no question if it can also use a 5 GHz band. It can't. RPi 3B+ supports dual band. The RPi 4B uses the same on-board wifi chip than RPi 3B+ so it also supports dual band.

With iw list on RPi 4B you will find:

valid interface combinations:
 * # managed <= 1, # P2P-device <= 1, # P2P-client, P2P-GO <= 1,
 total <= 3, #channels <= 2
 * # managed <= 1, # AP <= 1, # P2P-client <= 1, # P2P-device <= 1,
 total <= 4, #channels <= 1

This tells you what combinations are possible. For example you can make in total 3 connections, maybe managed, P2P-client and P2P-GO on two channels (one on 2.4 GHz and one on 5 GHz). But with an access point (AP) you can have 4 connections in total but only on one channel.

If you do not find a possible combination you always can use an additional USB/WiFi dongle.

share|improve this answer

answered 7 hours ago

IngoIngo

14.9k55 gold badges1919 silver badges7474 bronze badges

add a comment
 | 

First to clarify: you are talking about RPi 3B, the link you have given is talking about a RPi 3B+. This is an important difference. RPi 3B only supports the 2.4 GHz band so there is no question if it can also use a 5 GHz band. It can't. RPi 3B+ supports dual band. The RPi 4B uses the same on-board wifi chip than RPi 3B+ so it also supports dual band.

With iw list on RPi 4B you will find:

valid interface combinations:
 * # managed <= 1, # P2P-device <= 1, # P2P-client, P2P-GO <= 1,
 total <= 3, #channels <= 2
 * # managed <= 1, # AP <= 1, # P2P-client <= 1, # P2P-device <= 1,
 total <= 4, #channels <= 1

This tells you what combinations are possible. For example you can make in total 3 connections, maybe managed, P2P-client and P2P-GO on two channels (one on 2.4 GHz and one on 5 GHz). But with an access point (AP) you can have 4 connections in total but only on one channel.

If you do not find a possible combination you always can use an additional USB/WiFi dongle.

share|improve this answer

answered 7 hours ago

IngoIngo

14.9k55 gold badges1919 silver badges7474 bronze badges

valid interface combinations:
 * # managed <= 1, # P2P-device <= 1, # P2P-client, P2P-GO <= 1,
 total <= 3, #channels <= 2
 * # managed <= 1, # AP <= 1, # P2P-client <= 1, # P2P-device <= 1,
 total <= 4, #channels <= 1

share|improve this answer

answered 7 hours ago

IngoIngo

14.9k55 gold badges1919 silver badges7474 bronze badges

answered 7 hours ago

IngoIngo

14.9k55 gold badges1919 silver badges7474 bronze badges

answered 7 hours ago

IngoIngo

14.9k55 gold badges1919 silver badges7474 bronze badges

1

On the Raspberry Pi 4, wireless support is provided by the same Cypress CYW43455 chip as on the Pi 3 B+. A limitation of this chip is that it cannot do Real Simultaneous Dual Band (RSDB). You could add a USB wifi module, to have two devices, each on a different band.

share|improve this answer

edited 4 hours ago

answered 7 hours ago

Michael HarveyMichael Harvey

34811 silver badge99 bronze badges

add a comment
 | 

1

On the Raspberry Pi 4, wireless support is provided by the same Cypress CYW43455 chip as on the Pi 3 B+. A limitation of this chip is that it cannot do Real Simultaneous Dual Band (RSDB). You could add a USB wifi module, to have two devices, each on a different band.

share|improve this answer

edited 4 hours ago

answered 7 hours ago

Michael HarveyMichael Harvey

34811 silver badge99 bronze badges

add a comment
 | 

On the Raspberry Pi 4, wireless support is provided by the same Cypress CYW43455 chip as on the Pi 3 B+. A limitation of this chip is that it cannot do Real Simultaneous Dual Band (RSDB). You could add a USB wifi module, to have two devices, each on a different band.

share|improve this answer

edited 4 hours ago

answered 7 hours ago

Michael HarveyMichael Harvey

34811 silver badge99 bronze badges

share|improve this answer

edited 4 hours ago

answered 7 hours ago

Michael HarveyMichael Harvey

34811 silver badge99 bronze badges

answered 7 hours ago

Michael HarveyMichael Harvey

34811 silver badge99 bronze badges

answered 7 hours ago

Michael HarveyMichael Harvey

34811 silver badge99 bronze badges