Efficient method of DL-CINR measurement and reporting in NB IoT

A user equipment (UE), comprising

• a memory;
• a transceiver;
• one or more processors operatively coupled to the memory and the transceiver, the one or more processors being configured to:
• receive, via the transceiver at the UE, a random access response including a first signal via a first physical channel and a second signal via a second physical channel from a base station (BS);
• generate a connection request based on the random access response;
• estimate a carrier to interference plus noise ratio (CINR) of a random-access channel based on at least one of the first signal or the second signal;
• and
• send, via the transceiver, a message including the CINR and the connection request to the BS in response to the random access response,
• wherein estimating the CINR comprises dividing an estimated signal power by a difference between an estimated total power and the estimated signal power.

A non-transitory computer-readable medium having instructions stored therein that, when executed by one or more processors of a user equipment (UE), cause the one or more processors to:

• receive, at the UE, a random access response including a first signal via a first physical channel and a second signal via a second physical channel from a base station (BS);
• generate a connection request based on the random access response;
• estimate a carrier to interference plus noise ratio (CINR) of a random-access channel based on at least one of the first signal or the second signal;
• and
• send a message including the CINR and the connection request to the BS in response to the random access response,
• wherein estimating the CINR comprises dividing an estimated signal power by a difference between an estimated total power and the estimated signal power.

A user equipment (UE), comprising:

• means for receiving, at the UE, a random access response including a first signal via a first physical channel and a second signal via a second physical channel from a base station (BS);
• means for generating a connection request based on the random access response;
• means for estimating a carrier to interference plus noise ratio (CINR) of a random-access channel based on at least one the first signal or the second signal;
• and
• means for sending a message including the CINR and the connection request to the BS in response to the random access response,
• wherein estimating the CINR comprises dividing an estimated signal power by a difference between an estimated total power and the estimated signal power.