Beam Power Measurement Reporting With Reduced CSI Timing Complexity
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently calculating and reporting channel state information (CSI) due to resource shortages and increased user demand for higher-speed services, particularly in next-generation mobile communication systems requiring enhanced data traffic, increased transfer rates, and low latency.
Innovation Solution
Implementing methods for transmitting and receiving power measurement information related to beam reporting, including calculating a minimum required time for reporting based on downlink reference signals and DCI, and utilizing a pre-configured threshold value to optimize CSI reporting, with techniques for allocating processing units and subcarrier spacing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the minimum required time for power measurement information reporting is calculated as the sum of first minimum required time (from downlink reference signal to transmission timing) and second minimum required time (from DCI triggering to downlink reference signal reception), then the reporting timing can be precisely controlled, but the system complexity increases due to multiple timing parameters
Solution Approach 1:
The patent applies preliminary action by pre-configuring the second minimum required time (m value) as a fixed parameter that the UE reports to the base station. This allows the base station to pre-determine the timing relationship between DCI triggering and downlink reference signal reception, eliminating the need for real-time calculation of this component and reducing system complexity while maintaining precise timing control.
2Productivity
If multiple CSI processing units are allocated for parallel CSI reporting, then the productivity of CSI calculation is improved, but the device complexity and resource consumption increase
Solution Approach 1:
The patent applies dynamics by making the number of CSI processing units a configurable parameter that can be dynamically adjusted based on system conditions. The base station can configure different numbers of processing units (e.g., 1, 2, or 4) depending on the traffic load, channel conditions, and UE capabilities, allowing the system to optimize between productivity and resource consumption flexibly rather than being fixed.
Solution Approach 2:
The patent applies parameter changes by introducing configurable parameters for the number of CSI processing units and the second minimum required time (m value). These parameters can be adjusted according to different deployment scenarios, UE capabilities, and network conditions, enabling the system to adapt the processing capacity and timing requirements to match actual needs, thus balancing productivity improvement with resource efficiency.
3Speed
If the subcarrier spacing is increased to 60 kHz or 120 kHz for power measurement information reporting, then the data transfer rate is improved, but the timing synchronization difficulty increases
Solution Approach 1:
The patent applies preliminary action by pre-establishing the timing relationship parameters (first minimum required time and pre-configured second minimum required time m value) before high-speed reporting. This allows the UE and base station to have predetermined timing expectations, making it easier to maintain synchronization even at higher subcarrier spacings of 60 kHz or 120 kHz where timing margins are tighter.
Data Source
AI summary
A method of transmitting, by a user equipment (UE), power measurement information related to beam reporting in a wireless communication system includes: receiving downlink control information (DCI) triggering reporting of the power measurement information; receiving a downlink reference signal for reporting of the power measurement information; and transmitting, to a base station, power measurement information determined based on the received downlink reference signal. A minimum required time for reporting of the power measurement information is (i) calculated as the sum of a first minimum required time from the last timing of the downlink reference signal to a transmission timing of the power measurement information and a second minimum required time between DCI triggering the downlink reference signal and reception of the downlink reference signal or (ii) calculated based on a pre-configured threshold value related to reporting of the power measurement information.