Early measurement reporting
Certain aspects of the present disclosure provide techniques for performing measurement reporting. One aspect is a method for performing measurement reporting at a user equipment, including: receiving, from a master node, a message comprising a measurement configuration for a secondary node; entering an inactive state; performing measurements according to the measurement configuration for the secondary node immediately after entering the inactive state; generating a measurement report based on the measurements; transmitting, to the master node, a radio resource control (RRC) resume request message; receiving, from the master node, an RRC resume message comprising a request for measurement reporting; and transmitting, to the master node, an RRC resume complete message comprising the measurement report; and receiving data from the secondary node.
1. A method for performing measurement reporting at a user equipment, comprising:
receiving, from a master node, a message comprising a measurement configuration for a secondary node;
entering an inactive state;
performing measurements according to the measurement configuration for the secondary node immediately after entering the inactive state;
generating a measurement report based on the measurements;
transmitting, to the master node, a radio resource control (RRC) resume request message;
receiving, from the master node, an RRC resume message comprising a request for measurement reporting;
transmitting, to the master node, an RRC resume complete message comprising the measurement report; and
receiving data from the secondary node.
2. The method of claim 1 , wherein the RRC resume request message comprises an indication that the measurement report is available.
3. The method of claim 1 , further comprising: transmitting, to the master node, a beam measurement report.
4. The method of claim 1 , wherein the message comprising the measurement configuration comprises an RRC release message.
5. The method of claim 4 , wherein the RRC release message comprises:
a frequency associated with the secondary node;
a synchronization signal blocks (SSB) measurement time configuration (SMTC) associated with the secondary node;
a cell level measurement configuration including threshold and maximum beam number to derive cell quality;
a layer 3 beam level measurement configuration including threshold and maximum beam number for reporting;
a cell quality threshold;
a timer configured to control how long the user equipment can perform measurements in the inactive state; and
a validity area.
6. The method of claim 5 , wherein the RRC release message further comprises one or more of:
a subcarrier spacing of SSBs to be measured;
a bitmap of transmitted SSBs to be measured;
an NR frequency band number; or an SSB-received signal strength indicator (RSSI) measurement configuration.
7. The method of claim 6 , wherein the RRC release message further comprises one or more of:
a beam measurement results validity timer configured to control how long measured beam measurement results are kept; or one or more layer 3 (L3) filter coefficients.
8. The method of claim 5 , wherein the validity area comprises a list of cell identifiers.
9. The method of claim 5 , wherein the validity area comprises a list of radio access network (RAN) notification areas (RNAs).
10. The method of claim 5 , wherein the validity area comprises a list of tracking areas (TAS).
11. The method of claim 1 , wherein the message comprising the measurement configuration comprises a system information broadcast (SIB) 4 message.
12. The method of claim 1 , wherein the message comprising the measurement configuration comprises a system information broadcast (SIB) message with a periodicity shorter than a SIB4 message.
13. The method of claim 12 , further comprising: sending, to the master node, a preamble comprising a request for the SIB message prior to receiving the message comprising the SIB message.
14. A user equipment configured to perform measurement reporting, comprising:
a memory comprising instructions;
one or more processors, individually or collectively, configured to execute the instructions and cause the user equipment to:
receive, from a master node, a message comprising a measurement configuration for a secondary node;
enter an inactive state;
perform measurements according to the measurement configuration for the secondary node immediately after entering the inactive state;
generate a measurement report based on the measurements;
transmit, to the master node, a radio resource control (RRC) resume request message;
receive, from the master node, an RRC resume message comprising a request for measurement reporting;
transmit, to the master node, an RRC resume complete message comprising the measurement report; and
receive data from the secondary node.
15. The user equipment of claim 14 , wherein the RRC resume request message comprises an indication that the measurement report is available.
16. The user equipment of claim 14 , wherein the one or more processors are, individually or collectively, configured to execute the instructions and cause the user equipment to: transmit, to the master node, a beam measurement report.
17. The user equipment of claim 1 , wherein the message comprising the measurement configuration comprises an RRC release message.
18. The user equipment of claim 17 , wherein the RRC release message comprises:
a frequency associated with the secondary node;
a synchronization signal blocks (SSB) measurement time configuration (SMTC) associated with the secondary node;
a cell level measurement configuration including threshold and maximum beam number to derive cell quality;
a layer 3 beam level measurement configuration including threshold and maximum beam number for reporting;
a cell quality threshold;
a timer configured to control how long the user equipment can perform measurements in the inactive state; and
a validity area.
19. The user equipment of claim 18 , wherein the RRC release message further comprises one or more of:
a subcarrier spacing of SSBs to be measured;
a bitmap of transmitted SSBs to be measured;
an NR frequency band number; or
an SSB-received signal strength indicator (RSSI) measurement configuration.
20. The user equipment of claim 19 , wherein the RRC release message further comprises one or more of:
a beam measurement results validity timer configured to control how long measured beam measurement results are kept; or one or more layer 3 (L3) filter coefficients.
21. The user equipment of claim 18 , wherein the validity area comprises a list of cell identifiers.
22. The user equipment of claim 18 , wherein the validity area comprises a list of radio access network (RAN) notification areas (RNAs).
23. The user equipment of claim 18 wherein the validity area comprises a list of tracking areas (TAs).
24. The user equipment of claim 14 , wherein the message comprising the measurement configuration comprises a system information broadcast (SIB) 4 message.
25. The user equipment of claim 14 , wherein the message comprising the measurement configuration comprises a system information broadcast (SIB) message with a periodicity shorter than a SIB4 message.
26. The user equipment of claim 25 , wherein the one or more processors are, individually or collectively, configured to execute the instructions and cause the user equipment to: send, to the master node, a preamble comprising a request for the SIB message prior to receiving the message comprising the SIB message.
27. A user equipment configured to perform measurement reporting, comprising:
means for receiving, from a master node, a message comprising a measurement configuration for a secondary node;
means for entering an inactive state;
means for performing measurements according to the measurement configuration for the secondary node immediately entering the inactive state;
means for generating a measurement report based on the measurements;
means for transmitting, to the master node, a radio resource control (RRC) resume request message;
means for receiving, from the master node, an RRC resume message comprising a request for measurement reporting;
means for transmitting, to the master node, an RRC resume complete message comprising the measurement report; and
means for receiving data from the secondary node.
28. The user equipment of claim 27 , wherein the RRC resume request message comprises an indication that the measurement report is available.
29. A non-transitory computer-readable medium comprising computer-executable instructions that, when executed by one or more processors of a user equipment, cause the user equipment to perform a method for performing measurement reporting, the method comprising:
receiving, from a master node, a message comprising a measurement configuration for a secondary node;
entering an inactive state;
performing measurements according to the measurement configuration for the secondary node immediately after entering the inactive state;
generating a measurement report based on the measurements;
transmitting, to the master node, a radio resource control (RRC) resume request message;
receiving, from the master node, an RRC resume message comprising a request for measurement reporting;
transmitting, to the master node, an RRC resume complete message comprising the measurement report; and
receiving data from the secondary node.
30. The non-transitory computer-readable medium of claim 29 , wherein the RRC resume request message comprises an indication that the measurement report is available.