Sidelink Resource Pool Selection for Power Saving
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Solution Overview
Problem
Current sidelink communication technologies in wireless cellular networks face challenges in power consumption and resource allocation efficiency, particularly for remote UEs that require infrequent data transmission, as they need to frequently monitor dense resource pools for data transfer, leading to increased power usage and reduced battery life.
Innovation Solution
The introduction of multiple resource pools for sidelink communications, including a sparse resource pool that optimizes power saving by allowing devices to power down transceiver circuitry between active periods, and a dense resource pool for efficient data transfer, enabling devices to switch between these pools based on data availability and network configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If remote UEs frequently monitor dense resource pools for data transfer, then data transfer efficiency is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic resource pool selection where the UE switches between dense and sparse resource pools based on data availability conditions. When data is available, the UE monitors dense resource pools for high-efficiency transfer; when no data is available, the UE switches to sparse resource pools or discontinuous reception modes to reduce power consumption. This dynamic adaptation resolves the contradiction between maintaining high data transfer efficiency and reducing power consumption during inactive periods.
Solution Approach 2:
The patent changes the monitoring parameters of resource pools based on traffic conditions. The network configures multiple resource pools with different densities, and the UE adjusts which pool to monitor based on whether data is available for transmission. This parameter change allows the system to optimize between monitoring frequency (affecting transfer efficiency) and power consumption during different operational states.
2Use of energy by moving object
If multiple resource pools are introduced for sidelink communications, then power saving is improved, but device complexity increases
Solution Approach 1:
The patent segments the resource pool into multiple distinct pools with different characteristics (dense and sparse). Each resource pool is independently configured with specific monitoring parameters and resource allocations. This segmentation allows the UE to select appropriate pools based on traffic conditions, achieving power savings while managing complexity through clear separation of functions.
Solution Approach 2:
The multiple resource pools serve universal purposes for different traffic scenarios. The same resource pool configuration mechanism handles both power-saving scenarios (sparse pools) and high-performance scenarios (dense pools), making the system multi-functional without requiring separate specialized mechanisms for each case.
Data Source
AI summary
Embodiments of the present disclosure provide methods and wireless terminal devices that deal with issues relating to resource allocation in sidelink radio connections. One embodiment provides a method in a first wireless terminal device. The method comprises: establishing a sidelink radio connection with a second wireless terminal device; selecting one of a plurality of resource pools for wireless communication over the sidelink radio connection, the plurality of resource pools comprising a first resource pool and a second resource pool, the first resource pool defining a first subset of available physical resources and the second resource pool defining a second subset of available physical resources; and utilizing the selected resource pool for transmitting wireless communications to the second wireless terminal device, or receiving wireless communications from the second wireless terminal device.