RSRP_IDX_TO_DBM

#define RSRP_IDX_TO_DBM

(

rsrp

)

#include <include/modem/modem_info.h>

Value:

((rsrp) < 0 ?  (rsrp) - 140 : (rsrp) - 141)

Converts RSRP index value returned by the modem to dBm.

The index value of RSRP can be converted to dBm with the following formula:

• index < 0: index – 140
• index = 0: Not used
• index > 0: index – 141

Example values:

• -17: RSRP < -156 dBm
• -16: -156 ≤ RSRP < -155 dBm
• ...
• -3: -143 ≤ RSRP < -142 dBm
• -2: -142 ≤ RSRP < -141 dBm
• -1: -141 ≤ RSRP < -140 dBm
• 0: Not used.
• 1: -140 ≤ RSRP < -139 dBm
• 2: -139 ≤ RSRP < -138 dBm
• ...
• 95: -46 ≤ RSRP < -45 dBm
• 96: -45 ≤ RSRP < -44 dBm
• 97: -44 ≤ RSRP dBm

There are use cases where the index value 0 is used to represent RSRP < -140 dBm.

See modem AT command reference guide for more information.

Parameters

[in]

rsrp

RSRP index value as 'int'.

Returns

RSRP in dBm as 'int'.