How to increase the packet size?

[Li]

Dear All,

I am developing a custom service on 51822 and trying to adjust the packet number for each connection interval (I've split our data into 20 bytes chunks and they get sent every connection interval). However, it seems only 20 bytes are sent every transmission. As far as I understand, I should be able to send multiple packets (4-6, each of 20 bytes) in one transmission?

I am using Samsung (S3, Note 2 and S4) as central on samsung Android 4.3+.

Could anyone help me on how to increase the packet size if possible?

Thanks a lot

L.

Edit: one sentence question, tags.

[Petter Myhre]

You can not increase the size of the packets, as this is limited by the SoftDevice and the Core specification.

I'm assuming you are using notifications, and are doing something similar to this.

How many packets you can send in each connection interval depends on what central you are using.

[Petter Myhre]

What central are you testing with? Please edit the question to include the info.

[Nikita]

Maybe you have the same problem as here?

[Li]

I am using Samsung (S3, Note 2 and S4) as central on samsung Android 4.3+.

Thanks.

[Li]

I've just tried above mentioned solutions and got exactly the same results. It seems the bandwidth remains the same despite the fact that I repeatly call sd_ble_gatts_hvx(...).

Please advise on this. Thanks.