How to speed up NRF52832 mesh data

[skago2862]

Dear Nordic.

We are using NRF52832. According to Mesh spec, It can send up to 380 bytes, So I sent Mesh Data(PAYLOAD) up to 380 bytes. It was successful, but the data was too slow.
It took about 3 seconds.

I found that it doesn't take long if the amount of data is small, but it takes longer as the amount of data increases.

Is there a way to speed up the data?
I referred to light_switch source.

[Simonr]

Hi

In our Mesh throughput tests here we've managed to get ~3.4kbps (that's kbits per second) point to point. 380 bytes will result to 3040 bits, so the transmission should take ~1 second in optimal conditions, however, you haven't specified how many hops your transmission is doing, etc. so depending on that, I think it should be possible to decrease the transmission time, at least somewhat depending on the testing environment. 

I will need more information on your application and Mesh network in order to come with any specific advice.

Best regards,

Simon

[skago2862]

Dear Simonr.

See below for our environment.

1. Two NRF52832 -Development Kits(server,client)
2. Measurements at a distance of 20Cm

Source Reference
genic_onoff_server.c

static uint32_t status_send(generic_onoff_server_t * p_server,
const access_message_rx_t * p_message,
const generic_onoff_status_params_t * p_params)
{

generic_onoff_status_msg_pkt_t msg_pkt;
uint8_t data[379];
memset(data,'K',379);

if (p_params->present_on_off > GENERIC_ONOFF_MAX ||
p_params->target_on_off > GENERIC_ONOFF_MAX ||
p_params->remaining_time_ms > TRANSITION_TIME_STEP_10M_MAX)
{
return NRF_ERROR_INVALID_PARAM;
}

msg_pkt.present_on_off = p_params->present_on_off;
if (p_params->remaining_time_ms > 0)
{
msg_pkt.target_on_off = p_params->target_on_off;
msg_pkt.remaining_time = model_transition_time_encode(p_params->remaining_time_ms);
}

access_message_tx_t reply =
{
.opcode = ACCESS_OPCODE_SIG(GENERIC_ONOFF_OPCODE_STATUS),
//.p_buffer = (const uint8_t *) &msg_pkt,
.p_buffer = (const uint8_t *) &data,
//.length = p_params->remaining_time_ms > 0 ? GENERIC_ONOFF_STATUS_MAXLEN : GENERIC_ONOFF_STATUS_MINLEN,
.length = strlen(data),
.force_segmented = p_server->settings.force_segmented,
.transmic_size = p_server->settings.transmic_size
};

if (p_message == NULL)
{
return access_model_publish(p_server->model_handle, &reply);
}
else
{
return access_model_reply(p_server->model_handle, p_message, &reply);
}
}

Except for the above part, We didn't modify it.

Please tell me how to speed up data rate.