Wireless Device Power Transmission Capability Indication
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Solution Overview
Problem
Wireless devices face challenges in efficiently transmitting power across different radio access technologies, particularly in indicating full power transmission capability without revealing hardware details, and managing antenna virtualization and switching for concurrent connections.
Innovation Solution
A wireless device indicates its full power transmission capability by signaling support for a subset of TPMIs using a bitmap, enabling full power transmission via antenna switching and virtualization, while maintaining concurrent connections with multiple radio access technologies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the wireless device indicates full power transmission capability for all TPMIs, then the transmission power is maximized, but the device complexity and power consumption increase due to antenna switching and virtualization requirements
Solution Approach 1:
The patent segments the set of all TPMIs into multiple subsets, where each subset is associated with a specific antenna port. Instead of indicating full power capability for all TPMIs uniformly, the device indicates full power capability selectively for specific TPMIs within specific subsets. This segmentation allows the device to manage complexity by limiting full power transmission to only those TPMIs that can be supported by the available antenna configurations, rather than requiring full support across all possible TPMIs.
Solution Approach 2:
The patent applies local quality by allowing different power transmission characteristics for different TPMIs based on their association with specific antenna ports. Rather than a uniform full power capability across all TPMIs, the device provides full power capability locally for specific TPMIs that are mapped to antenna ports it can support, while other TPMIs may operate at reduced power levels. This localized approach to power capability indication reduces the overall device complexity and power consumption requirements.
2Adaptability or versatility
If the wireless device supports concurrent connections with multiple radio access technologies, then the adaptability is improved, but the power management complexity increases
Solution Approach 1:
The patent implements a universal power capability indication mechanism that works across multiple radio access technologies. The same bitmap-based indication method and TPMI subset management approach can be applied whether the device is connected to LTE, NR, or other RATs. This universal approach allows the device to maintain concurrent connections with multiple RATs without requiring separate complex power management mechanisms for each technology, thereby improving adaptability while controlling power management complexity.
3Power
If the wireless device uses antenna virtualization for full power transmission, then the transmission power is improved, but the information leakage about hardware details occurs
Solution Approach 1:
The patent extracts and separates the power capability indication from the underlying hardware implementation details. By using a bitmap-based indication method that only signals which TPMI subsets support full power transmission, the patent removes the need to disclose specific antenna configurations, virtualization schemes, or hardware architecture. The base station receives sufficient information to allocate resources appropriately without gaining insight into the device's internal hardware details, thus maintaining full power transmission capability while preventing information leakage.
Data Source
AI summary
Apparatuses, systems, and methods to indicate power transmission capability for a wireless device. A wireless device may connect to a base station (BS). The wireless device may transmit information regarding transmit power capability to the BS. The wireless device may indicate support for full power transmit capability for a subset of TPMIs for which it provides full power transmit capability, e.g., in a bitmap. This subset of TPMIs may be less than all of the available TPMIs (i.e., it may be a strict subset of the available TPMIs). Full power transmission capability of these indicated TPMIs may be provided via antenna switching and/or antenna virtualization. The wireless device may perform uplink transmission to the BS according to the transmit power capability indicated in the information. For example, the UE may transmit data using the antenna virtualization related to the subset of the TPMIs.