MAC CE Power Headroom Reporting for Simultaneous Uplink Channels
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing power headroom reporting for simultaneous transmissions on multiple uplink channels, leading to potential interference and suboptimal resource allocation.
Innovation Solution
Implementing a user equipment (UE) and network node configuration to transmit and receive medium access control (MAC) control elements (CEs) that include power headroom reports (PHRs) for multiple uplink channels, with a maximum total transmit power limit, to manage simultaneous transmissions effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If power headroom reporting is implemented for simultaneous transmissions on multiple uplink channels, then power management accuracy is improved, but system complexity increases
Solution Approach 1:
The patent segments the power headroom reporting by introducing separate reporting mechanisms for different uplink channel types (e.g., PUCCH, PUSCH, SRS). Each channel type has its own power headroom report structure, allowing independent management and calculation of power headroom for each channel, thereby improving measurement precision while organizing system complexity through structured segmentation.
Solution Approach 2:
The patent introduces a new dimension to power headroom reporting by adding channel-specific identifiers and type differentiation to the existing reporting framework. This dimensional expansion allows the system to report power headroom across multiple channels simultaneously with distinct parameters, enhancing accuracy without fundamentally redesigning the entire reporting system.
2Productivity
If multiple power headroom reports are transmitted for simultaneous uplink channels, then resource allocation optimization is improved, but transmit power requirements increase
Solution Approach 1:
The patent merges multiple power headroom reports into a single aggregated MAC CE structure that contains power headroom information for multiple uplink channels. By combining what would otherwise be separate reporting transmissions into one unified report, the system achieves optimized resource allocation across channels while reducing the total transmit power required for reporting.
Solution Approach 2:
The patent creates a universal power headroom reporting structure that can accommodate multiple uplink channel types within a single MAC CE. This multi-functional report structure serves all channel types simultaneously, improving resource allocation optimization while minimizing additional transmit power requirements through efficient multiplexing.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive configuration information corresponding to power headroom reporting associated with simultaneous transmissions on a plurality of uplink channels, the configuration information indicating a maximum total transmit power limit associated with the simultaneous transmissions. The UE may transmit, based at least in part on the configuration information, a medium access control (MAC) control element (MAC CE) that includes at least one power headroom report corresponding to the plurality of uplink channels. Numerous other aspects are described.