Reference Signal Dropping for High Priority Channel Collisions
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Solution Overview
Problem
Current wireless communication systems lack a mechanism to handle high priority downlink data transmissions that overlap with scheduled reference signal transmissions, leading to inefficient resource management and limited flexibility in responding to changing communication environments.
Innovation Solution
Implementing a reconfigurable switching rule that prioritizes high priority downlink data transmissions over reference signal transmissions when overlap occurs, allowing base stations and user equipment to dynamically adjust their operations based on priority levels and timing thresholds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the UE performs reference signal transmission on the second carrier, then channel state information can be obtained for downlink communication, but the high priority downlink data transmission on the first carrier may be delayed or lost due to RF retuning time
Solution Approach 1:
The patent implements a dynamic switching rule that allows the UE to flexibly switch between performing reference signal transmission and receiving downlink data based on priority levels and timing conditions. The rule enables the UE to adapt its behavior in real-time: when high priority downlink data is detected within a threshold time before the reference signal, the UE prioritizes receiving the data; otherwise, it performs the reference signal transmission. This dynamic adjustment resolves the contradiction by making the system responsive to changing conditions rather than following a fixed protocol.
2Productivity
If the UE prioritizes high priority downlink data transmission, then resource allocation efficiency is improved, but the reference signal transmission may be dropped affecting channel state information quality
Solution Approach 1:
The patent introduces a priority level parameter and a time threshold parameter that control the switching behavior. By changing these parameters dynamically, the system can adjust the balance between resource allocation efficiency and reference signal reliability. When high priority data is detected within the threshold time, the system prioritizes data reception; when no such data is present, the reference signal transmission proceeds as scheduled. This parameter-based control mechanism allows flexible trade-off management between the two competing objectives.
3Adaptability or versatility
If the UE switches RF carriers for reference signal transmission, then multi-carrier communication capability is utilized, but switching time may cause overlap or conflict with downlink data reception
Solution Approach 1:
The patent implements a preliminary check mechanism where the UE examines the timing relationship between scheduled reference signal transmissions and potential high priority downlink data before actually performing the carrier switch. The switching rule evaluates whether high priority data is expected within a threshold time before the reference signal. This preliminary assessment prevents unnecessary carrier switching and avoids conflicts before they occur, simplifying the coordination complexity while maintaining multi-carrier capability.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify a switching rule pertaining to either carrier switching or antenna switching associated with the UE performing a reference signal transmission scheduled on a second carrier. The UE may receive a grant scheduling a downlink data transmission on a first carrier, the downlink data transmission comprising a priority level satisfying a priority threshold. The UE may determine that the reference signal transmission is scheduled on the second carrier within a time threshold of the downlink data transmission on the first carrier. The UE may monitor for the downlink data transmission instead of performing the reference signal transmission based at least in part on the switching rule and the priority level of the downlink data transmission satisfying the priority threshold.