Preconfigured Uplink Resources for Idle Mode Wireless Communication
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Solution Overview
Problem
Wireless communication systems face challenges in reliable communication between base stations and user equipment (UE) due to the idle mode operation, particularly when using preconfigured uplink resources, as it leads to indeterminate application of features like frequency hopping, timing advance, and power control in idle mode communications.
Innovation Solution
The techniques enhance communication features by determining parameters for frequency hopping, timing advance updates, and power control for UE in idle mode, based on connected mode configurations and information received in system information blocks or downlink control channels, allowing for flexible resource allocation and improved communication parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If preconfigured uplink resources are configured for idle mode communication, then latency is reduced and communication efficiency is improved, but reliability of communication is worsened due to indeterminate application of frequency hopping, timing advance, and power control features
Solution Approach 1:
The patent applies preliminary action by pre-configuring uplink resources and determining all necessary communication parameters (frequency hopping, timing advance, power control) in advance while the UE is in connected mode. These parameters are stored and automatically applied when the UE transitions to idle mode, eliminating the need for real-time parameter determination and ensuring reliable communication without latency penalties.
2Adaptability or versatility
If UE operates in idle mode with preconfigured resources, then resource allocation flexibility is improved, but communication reliability deteriorates due to lack of network-controlled mobility and timing advance configuration
Solution Approach 1:
The patent determines timing advance and other communication parameters in advance while the UE is in connected mode, storing them for later use in idle mode. This preliminary configuration ensures that when the UE needs to communicate in idle mode, all necessary parameters are already determined, maintaining reliability while preserving the flexibility of idle mode operation.
Solution Approach 2:
The patent copies the connected mode configuration parameters (frequency hopping, timing advance, power control) to be used in idle mode. By replicating these parameters across different operation modes, the system ensures consistent and reliable communication performance whether the UE is in connected or idle mode, while maintaining resource allocation flexibility.
3Adaptability or versatility
If frequency hopping and power control parameters are determined in idle mode based on system information blocks, then adaptability to changing channel conditions is improved, but communication reliability is worsened due to indeterminate parameter application
Solution Approach 1:
The patent determines frequency hopping and power control parameters in advance while in connected mode, before transitioning to idle mode. This preliminary determination eliminates the indeterminate parameter application problem, ensuring that all parameters are clearly defined and reliably applied even when adapting to changing channel conditions in idle mode.
Solution Approach 2:
The patent copies the connected mode parameter configurations to idle mode operation. By replicating the determined parameters across modes, the system maintains adaptability to channel conditions while ensuring reliable and deterministic parameter application, resolving the contradiction between adaptability and reliability.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described that support techniques for wireless communications using preconfigured uplink resources. Generally, the described techniques provide for enhancement of communication features including frequency hopping, an uplink control channel, coverage enhancement, timing advance, uplink power control, reconfiguration, a downlink control channel, a downlink data channel, retransmissions, or subcarrier spacing for a UE in idle mode. The UE may receive an uplink resource configuration for uplink communications in idle mode, the uplink resource configuration comprising an indicator associated with allocated resources for the uplink communications in idle mode and a set of parameters. The UE may transmit, while in idle mode, a first uplink transmission associated with a transport block on the allocated resources and according to one or more of the parameters, and monitor for a response to the first uplink transmission.