Quality report in message 3 (MSG3) for release 16 (rel-16) enhanced machine type communication (EMTC) and narrowband internet of things (NB-IOT)
Some embodiments of this disclosure include systems, apparatuses, methods, and computer-readable media for use in a wireless network for designing quality report for enhanced Machine Type Communication (EMTC) and Narrowband Internet of Things (NB-IOT). For example, some embodiments are directed to a user equipment (UE) including radio front end circuitry and processor circuitry coupled to the radio front end circuitry. The processor circuitry can be configured to determine a downlink (DL) quality metric based on a DL quality metric type and identify a message 3 (Msg3) signal based on the determined DL quality metric. The processor circuitry can further be configured to transmit, using the radio front end circuitry, the identified Msg3 signal to a base station.
1. A user equipment (UE), comprising:
radio front end circuitry; and
processor circuitry, coupled to the radio front end circuitry, and configured to:
signal to a base station a capability of transmitting a downlink (DL) quality report using a message 3 (Msg3) signal for determination of a minimum uplink (UL) grant for the Msg3 signal;
determine a DL quality metric based on a DL quality metric type;
identify the Msg3 signal based on the DL quality metric; and
transmit, using the radio front end circuitry and to the base station, the DL quality report based on the DL quality metric and using the Msg3 signal.
2. The UE of claim 1 , wherein the processor circuitry is further configured to:
receive, using the radio front end circuitry, a message 2 (Msg2) signal; and
determine, using the received Msg2 signal, a Physical Random Access Channel (PRACH) Coverage Enhancement (CE) level.
3. The UE of claim 2 , wherein the processor circuitry is configured to determine the DL quality metric type based on the PRACH CE level.
4. The UE of claim 3 , wherein in response to the PRACH CE level being a first value or a second value, the processor circuitry is configured to determine the DL quality metric type to be a Channel Quality Indicator (CQI).
5. The UE of claim 4 , wherein in response to the PRACH CE level being a third value or a fourth value, the processor circuitry is configured to determine the DL quality metric type to be a number of repetitions for decoding a Physical Downlink Control Channel (PDCCH).
6. The UE of claim 5 , wherein the number of repetitions include a number of repetitions for decoding the PDCCH with a Block Error Rate (BLER) of about 1%.
7. The UE of claim 2 , wherein the processor circuitry is configured to determine the PRACH CE based on one or more Reference Signal Received Power (RSRP) thresholds.
8. The UE of claim 1 , wherein the Msg3 signal is for a non-anchor carrier in Narrowband Internet of Things (NB-IOT) (NB-IOT).
9. A method, comprising:
signaling, by a user equipment (UE) and to a base station, a capability of transmitting a downlink (DL) quality report using a message 3 (Msg3) signal for determination of a minimum uplink (UL) grant for the Msg3 signal;
receiving, by the UE, a message 2 (Msg2) signal;
determining, by the UE and using the received Msg2 signal, a DL quality metric based on a DL quality metric type;
identifying, by the UE, the Msg3 signal based on the DL quality metric; and
transmitting, by the UE and to the base station, the DL quality report based on the DL quality metric and using the Msg3 signal.
10. The method of claim 9 , further comprising:
determining, using the received Msg2 signal, a Physical Random Access Channel (PRACH) Coverage Enhancement (CE) level.
11. The method of claim 10 , wherein determining the DL quality metric type comprises determining the DL quality metric type based on the PRACH CE level.
12. The method of claim 11 , further comprising:
determining the DL quality metric type to be a Channel Quality Indicator (CQI) in response to the PRACH CE level being a first value or a second value.
13. The method of claim 12 , further comprising:
determining the DL quality metric type to be a number of repetitions for decoding a Physical Downlink Control Channel (PDCCH) in response to the PRACH CE level being a third value or a fourth value.
14. The method of claim 13 , wherein the number of repetitions include a number of repetitions for decoding the PDCCH with a Block Error Rate (BLER) of about 1%.
15. The method of claim 10 , further comprising:
determining the PRACH CE based on one or more Reference Signal Received Power (RSRP) thresholds.
16. A base station, comprising:
radio front end circuitry; and
processor circuitry, coupled to the radio front end circuitry, and configured to:
receive, using the radio front end circuitry, a capability of a user equipment (UE) to transmit a downlink (DL) quality report using a message 3 (Msg3) signal for determination of a minimum uplink (UL) grant for the Msg3 signal;
transmit, using the radio front end circuitry, a message 2 (Msg2) signal to the UE;
receive, using the radio front end circuitry, the Msg3 signal from the UE; and
determine, based on the received Msg3 signal, a DL quality metric.
17. The base station of claim 16 , wherein the DL quality metric is based on a Channel Quality Indicator (CQI).
18. The base station of claim 16 , wherein the DL quality metric is based on a number of repetitions for decoding a Physical Downlink Control Channel (PDCCH) with a Block Error Rate (BLER) of about 1%.
19. The base station of claim 18 , wherein the repetitions comprise repetitions associated with a Narrowband Physical Downlink Control Channel (NPDCCH) or a Machine Type Communication (MTC) Physical Downlink Control Channel.
20. The base station of claim 16 , wherein the base station is associated with an enhanced Machine Type Communication (EMTC) or a non-anchor carrier in Narrowband Internet of Things (NB-IOT).