Zigbee Coordinator and Bluetooth Central co-existence

kjla alkfd

Prodigy 140 points

Other Parts Discussed in Thread: CC2652R

I'm looking for the best option if I need ZBC, and BLE central on my custom board. It is still in planning phase.

I wanted to use the CC2652R (someone recommended me that chip here) but that time I was not specific.

The ZB Coordinator should be able to handle max 50 direct children and max 200 devices within the whole network.

The BLE Central should be working parallel with the ZBC, with constant RX and occasional TX:

constant RX because it should be able capture advertising packets from nearby BT devices
occasionally (once/twice per hour) it will send L2CAP_ECHO_REQ to specific device(s) and receive L2CAP_ECHO_RSP. (It needs to be able to handle these kind of functionality!)
occasionally (random) it will communicate with BLE peripherials (reading/writing some characteristics)

I can use two fully separated SoCs with separated antennas. That would be the "brute-force" way. It might work as board design lets me keep good distance from those 2 antennas (at least lambda).

If I go on this way, CC2652 is able to handle the coordinator role for sure. Please recommend me something for the other (BLE Central) functionality (keeping in mind that I need the L2CAP_ECHO messages).

Going deeper, is there any better option which offer advantages for my goals? I know DMM is not capable of doing BLE Central things.

Thank you

over 5 years ago

0 Toby over 5 years ago

TI__Mastermind 34940 points

Hi,

I've reached out to experts to give insight on coex.

Regards,
Toby

0 kjla alkfd over 5 years ago in reply to Toby

Prodigy 140 points

Hi, thanks for confirming.

0 Elin W over 5 years ago

TI__Genius 14845 points

Hi Kjla,

Please refer to the coexistence chapter of the BLE User's Guide for more information.

If you want to test the coexistence feature, please check out the SimpleLink Academy coexistence lab.

Thanks,
Elin

0 kjla alkfd over 5 years ago in reply to Elin W

Prodigy 140 points

Thanks for the resources, Elin,

One more thing: is the CC2652 able to send L2CAP_ECHO_REQ to device(s) and receive L2CAP_ECHO_RSP from them?

0 kjla alkfd over 5 years ago in reply to Elin W

Prodigy 140 points

Elin,

Thanks for the links. These are for BLE + Wifi Coex, I'm looking for BLE + ZB Coex!

Especially BLE Central + ZB Coordinator.

I'm looking for the best way to put these two on the same board.

0 Elin W over 5 years ago in reply to kjla alkfd

TI__Genius 14845 points

Hi Kjla,

Using multiple RF protocols on the same chip is possible when using the Dynamic Multi-protocol Manager. Please refer to the User's Guide and SimpleLink Academy labs for more information.

Thanks,
Elin

0 kjla alkfd over 5 years ago in reply to Elin W

Prodigy 140 points

DMM does not supports BLE Central + ZB Coordinator. Why do you recommend me docs that does not cover my intention?

0 Elin W over 5 years ago in reply to kjla alkfd

TI__Genius 14845 points

Hi Kjla,

The DMM is the tool for using multiple wireless stacks to coexist and operate concurrently. The documentation I linked discusses the DMM and how you can use the DMM. The examples in the SDK (which can also be seen on Resource Explorer) are the configurations that have been tested and verified that they work. The configurations that aren't in the examples might work but since they are not tested at TI, the user must do the development, testing, and verifications themselves.

So all in all, the configuration BLE Central + Zigbee Coordinator has not been tested here at TI but you are free to use and test this configuration yourself.

Thanks,
Elin

Other wireless

Other wireless technologies forum

Zigbee Coordinator and Bluetooth Central co-existence