Sidelink BWP Modes During Network Energy-Saving Transitions
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing network energy consumption and sidelink operations when network entities transition to dormant or energy-saving modes, leading to disruptions in sidelink communications.
Innovation Solution
Implementing techniques that allow user equipment (UE) to operate sidelink connections based on configured bandwidth part (BWP) operation modes, including no impact, discontinuation, or specific sidelink modes when the network link is in dormant or energy-saving mode, with signaling on a per-BWP basis or through configuration, to manage network and sidelink behaviors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the network link transitions to dormant or energy-saving mode to reduce power consumption, then network energy consumption is reduced, but sidelink communication operations are disrupted
Solution Approach 1:
The network link is segmented into multiple bandwidth parts (BWPs), where at least one BWP is configured for energy-saving operation while another BWP maintains sidelink communication functionality. This allows the network to reduce power consumption in specific BWPs without completely disrupting sidelink operations.
Solution Approach 2:
The system dynamically switches between different BWP configurations based on communication needs. When energy saving is required, the network transitions to a BWP configured for dormant/energy-saving mode while maintaining the capability to switch back to active BWPs when sidelink communication needs to be maintained, creating a dynamic balance between power consumption and communication reliability.
2Reliability
If multiple bandwidth parts are configured with different operation modes to maintain sidelink operations during energy-saving mode, then sidelink communication reliability is maintained, but device complexity increases
Solution Approach 1:
Different bandwidth parts are assigned different operational characteristics - some BWPs are configured for energy-saving/dormant operation while others are configured for active communication. This local differentiation allows each BWP to operate optimally for its intended purpose without requiring the entire system to operate in a single mode.
Solution Approach 2:
The bandwidth part configuration system serves multiple functions: it enables energy-saving operation, maintains sidelink communication continuity, and provides flexible resource allocation. The same BWP framework supports both dormant and active operation modes, making the system multi-functional and reducing the need for separate mechanisms.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described that provide for a user equipment (UE) with concurrent sidelink and network link connections to operate the sidelink connection in accordance with a configured behavior associated with a bandwidth part (BWP) operation mode on the network link. The UE behavior may include, for example, no impact on sidelink activity when the network link is in a dormant or network energy saving (NES) mode, discontinuation of sidelink operation when the BWP is configured with a dormant or NES operation mode, or sidelink operation only in an identified sidelink mode when the BWP is configured with a dormant or NES operation mode. The sidelink operation mode based on NES mode of a network link BWP may be signaled to the UE on a per-BWP basis, or based on configuration and separate indication when a BWP is enabled.