Wireless Device Network Energy Saving Signaling
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in network energy consumption, particularly in managing energy usage across various technologies like LTE and 5G NR, leading to suboptimal performance and increased energy expenditure.
Innovation Solution
The implementation of advanced signaling and process enhancements in wireless devices and base stations, including bandwidth part adaptation and beam management, to optimize energy usage by dynamically adjusting transmission and reception bandwidths and configuring wireless devices for efficient energy-saving modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If network bandwidth and processing capacity are increased to improve system performance, then productivity is improved, but use of energy worsens
Solution Approach 1:
The patent implements dynamic bandwidth part adaptation where the network dynamically adjusts the bandwidth configuration based on current traffic conditions and service requirements. The base station can switch between different bandwidth parts (BWPs) to match the actual data transmission needs, avoiding continuous operation at maximum bandwidth and thus reducing energy consumption while maintaining productivity when needed.
Solution Approach 2:
The patent changes key operational parameters including bandwidth width, subcarrier spacing, and cyclic prefix length according to service types and traffic conditions. By adjusting these parameters dynamically, the system can optimize the balance between productivity and energy consumption - for example, using narrower bandwidths for low-traffic periods or energy-saving services while maintaining full performance when required.
2Productivity
If transmission bandwidth is increased to improve data rate, then productivity is improved, but use of energy worsens
Solution Approach 1:
The patent enables dynamic switching between different bandwidth parts (BWPs) with varying bandwidth widths. The system can transition from wide bandwidth configurations that provide high data rates to narrow bandwidth configurations that consume less power, based on real-time traffic demands. This dynamic adaptation resolves the contradiction by making transmission resources flexible rather than static.
Solution Approach 2:
The patent applies partial action by activating only the necessary portion of the available bandwidth based on current traffic requirements. Instead of continuously utilizing the full bandwidth capacity, the system activates only the required bandwidth parts, thereby achieving sufficient data rate performance while avoiding excessive energy consumption from underutilized transmission resources.
3Reliability
If network resources are continuously allocated to maintain connectivity, then reliability is improved, but use of energy worsens
Solution Approach 1:
The patent segments the overall bandwidth into multiple bandwidth parts (BWPs), allowing the system to activate only the necessary segments based on traffic conditions. During idle or low-activity periods, fewer BWP segments are activated, reducing power consumption while maintaining essential connectivity. When traffic increases, additional segments are activated to restore full performance, thus resolving the contradiction between continuous resource allocation and energy saving.
Solution Approach 2:
The patent implements periodic monitoring and adjustment of bandwidth part activation based on traffic patterns and connectivity requirements. The system periodically evaluates whether full bandwidth allocation is necessary or if reduced allocation suffices for maintaining connectivity, thereby reducing energy consumption during periods when full resources are not needed while preserving reliability when required.
Data Source
AI summary
A wireless device may transmit a message comprising information element(s) indicating whether the wireless device supports a network energy saving (NES) cell. An NES cell may be associated with process(es) resulting in energy saving compared to a non-NES cell. The wireless device may receive configuration parameters of an NES cell in response to transmitting the message and the information element(s) indicating that the wireless device supports an NES cell.