Wireless Device Power State Codepoint Mapping
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Solution Overview
Problem
Current wireless communication systems lack efficient methods to indicate and manage power states in wireless devices, leading to suboptimal performance and power consumption, especially in scenarios requiring adaptive communication profiles.
Innovation Solution
A method is introduced where a mapping between power states and codepoints is configured and signaled through control messages, allowing wireless devices to transition between different power states based on directional communication profiles, including modem-off, uplink-only, downlink-only, and uplink-and-downlink states, to optimize performance and power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If wireless devices use fixed power states without dynamic indication, then device complexity is reduced, but power efficiency and adaptability to varying communication scenarios deteriorate
Solution Approach 1:
The patent implements dynamic power state indication by introducing a codepoint field in downlink control information that signals the current power state to the wireless device. This allows the power state to change dynamically based on network conditions rather than being fixed, resolving the contradiction by making the system adaptive while maintaining manageable complexity through standardized signaling mechanisms
Solution Approach 2:
The patent changes the parameter of power state indication from static to dynamic by using codepoint signaling. The network entity can indicate different power states (modem-off, uplink-only, downlink-only, uplink-and-downlink) through control messages, allowing the wireless device to adjust its operation mode based on actual communication needs, thereby improving power efficiency without requiring complex autonomous decision-making at the device level
2Adaptability or versatility
If wireless devices transition between multiple power states dynamically, then adaptability to communication scenarios is improved, but control signaling overhead increases
Solution Approach 1:
The patent makes the codepoint field universal by allowing it to serve multiple functions: indicating power states, signaling search space set group switching, and providing other control information. This multi-functionality reduces signaling overhead because the same field structure is reused for different purposes rather than creating separate signaling mechanisms for each function
Solution Approach 2:
The patent applies preliminary action by configuring the mapping between codepoints and power states in advance through higher-layer signaling. This pre-configuration allows the downlink control information to use simple codepoint indicators without needing to transmit detailed power state descriptions each time, reducing the overhead of dynamic signaling while maintaining adaptability
3Loss of energy
If precise control over power states is implemented, then power consumption is reduced, but system complexity increases
Solution Approach 1:
The patent introduces an intermediary mapping table that associates codepoints with specific power states and directional communication profiles. This intermediary structure simplifies the control process by providing a direct lookup mechanism rather than requiring complex real-time analysis of communication conditions, thereby reducing power consumption while maintaining manageable system complexity through pre-established associations
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A network entity may configure a mapping between a set of power states and a set of codepoints. The network entity may indicate the mapping to a user equipment (UE) via control signaling, such as a first control message. Each power state may correspond to a respective directional communication profile associated with the network entity, the UE, or both. The network entity may transmit a second control message to the UE to indicate a codepoint from the set of codepoints. The UE device may transition to a power state that corresponds to the codepoint (e.g., based on the mapping) in accordance with the second control message. In some examples, the network entity may indicate the codepoint in a field of the second control message associated with a search space set group (SSSG) switching indication.