Wireless Device Bandwidth Part Configuration for Power Management
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing bandwidth parts and communication duty cycles, particularly in balancing power consumption with throughput and quality of service, especially under thermal and peak power conditions, which can lead to battery drain and system instability.
Innovation Solution
Implementing mechanisms for wireless devices to request and indicate preferred bandwidth parts and communication duty cycles, allowing them to configure optimal settings based on conditions such as data type, thermal conditions, and peak power, with assistance from base stations using scheduling and traffic-related information to minimize power consumption while maintaining performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If wideband cells with multiple bandwidth parts are used to increase coverage and serve increasing demand, then network capacity and coverage are improved, but power consumption of wireless devices increases
Solution Approach 1:
The patent divides the wideband cell into multiple bandwidth parts (BWPs), allowing the wireless device to activate only the necessary portions based on current needs. This segmentation enables the device to operate in smaller bandwidth segments rather than continuously monitoring the entire wideband spectrum, thereby reducing power consumption while maintaining network capacity.
Solution Approach 2:
The patent implements dynamic BWP switching and activation mechanisms where the wireless device can transition between different bandwidth parts based on traffic conditions, channel quality, and power state. This dynamic adaptation allows the system to optimize the balance between network productivity and device power consumption in real-time.
2Reliability
If multiple bandwidth parts are configured and activated to maintain good transmit and receive abilities, then communication quality is improved, but battery life decreases
Solution Approach 1:
The patent applies local quality by activating specific bandwidth parts based on local conditions such as channel quality indicators, traffic type, and device state. Instead of uniformly activating all BWPs, the system selectively activates only those portions necessary for maintaining acceptable communication quality, thereby extending battery life.
Solution Approach 2:
The wireless device autonomously determines which bandwidth parts to activate based on its own power state, thermal conditions, and communication requirements. This self-service mechanism allows the device to independently optimize its bandwidth usage to maintain communication quality while conserving battery power without constant network control.
3Use of energy by moving object
If bandwidth part configuration is dynamically adjusted based on device conditions, then power efficiency is improved, but system complexity increases
Solution Approach 1:
The patent implements feedback mechanisms where the wireless device reports its power state, thermal conditions, and channel quality to the network, which then provides appropriate BWP configuration recommendations. This feedback loop enables dynamic power optimization while distributing the complexity between the device and network rather than concentrating it entirely in one component.
Data Source
AI summary
This disclosure relates to techniques for a wireless device to indicate a preferred bandwidth part and duty cycle in a cellular communication system. A wireless device and a cellular base station may establish a radio resource control connection. The wireless device may transmit an indication of a preferred bandwidth part, or a preferred communication duty cycle, or both, to the cellular base station. The cellular base station may select a bandwidth part, or communication duty cycle, or both, based at least in part on the indication provided by the wireless device, and may transmit an indication of the selected bandwidth part, communication duty cycle, or both, to the wireless device. The cellular base station and the wireless device may perform cellular communication using the selected bandwidth part, communication duty cycle, or both.