Early Measurement Reporting for Small Data Transmission
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Solution Overview
Problem
In 5G wireless systems, the transition from RRC_INACTIVE to RRC_CONNECTED state for small data transmission (SDT) often prevents user equipment (UE) from providing measurement results to the network before the RRC Resume message is received, leading to suboptimal carrier aggregation (CA) or dual connectivity (DC) configuration, as the network is unaware of the UE's measurement results at this stage.
Innovation Solution
The UE is configured to perform early measurement reporting (EMR) during small data transmission (SDT), allowing it to transmit measurement results before transitioning to the RRC_CONNECTED state, enabling the network to configure optimal CA/DC settings in the first RRCResume message.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the UE transitions to RRC_CONNECTED state for small data transmission, then the network can receive data, but the UE cannot provide measurement results before the RRC Resume message is received
Solution Approach 1:
The patent applies preliminary action by enabling the UE to perform measurements and prepare measurement results before transitioning to RRC_CONNECTED state. The UE is configured to perform early measurement reporting during the RRC_INACTIVE state, so that when the RRC Resume message is received, the measurement results are already ready to be provided to the network, eliminating the information loss problem.
Solution Approach 2:
The patent implements feedback by establishing a mechanism where the UE reports measurement results back to the network element during the small data transmission procedure. This feedback loop allows the network to receive measurement information even before the full RRC_CONNECTED state transition is complete, enabling timely CA/DC configuration.
2Manufacturing precision
If the network waits for RRC Resume message to configure CA/DC settings, then the procedure is simple, but the configuration is suboptimal due to lack of measurement information
Solution Approach 1:
The patent uses preliminary action by having the UE perform measurements in advance during RRC_INACTIVE state. The measurement results are prepared and ready to be included in the small data transmission, allowing the network to configure optimal CA/DC settings based on actual measurement data rather than waiting for post-transition measurement reporting.
Solution Approach 2:
The patent applies parameter changes by modifying the timing and state in which measurement reporting occurs. Instead of waiting for the traditional RRC_CONNECTED state establishment, the system changes the parameter of measurement reporting timing to occur during RRC_INACTIVE state, enabling better-informed CA/DC configuration decisions.
3Manufacturing precision
If additional reconfiguration procedures are performed to provide measurement results, then the network can optimize CA/DC settings, but the procedure complexity increases
Solution Approach 1:
The patent applies merging by combining the measurement reporting function with the small data transmission procedure. Instead of adding a separate reconfiguration procedure for measurement reporting, the system merges these functions so that measurement results are transmitted together with the small data, eliminating additional procedure complexity while maintaining configuration optimality.
Solution Approach 2:
The patent implements universality by making the small data transmission procedure serve multiple functions: it carries both the actual data and the measurement results. This multi-functional approach eliminates the need for separate reconfiguration procedures, as the same transmission channel is used for both data communication and measurement reporting.
Data Source
AI summary
Systems, methods, apparatuses, and computer program products for early measurement reporting during small data transmission. A method may include receiving, from a network element, an early measurement reporting configuration. The method may also include receiving, from the network element, an indication of whether early measurement reporting during small data transmission is allowed. The method may further include initiating small data transmission to the network element. In addition, the small data transmission may include an early measurement reporting report when early measurement is allowed.