Dormant BWP Channel Reporting via Periodicity Adaptation
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Solution Overview
Problem
Current communication systems face challenges in enabling SRS transmission on dormant BWP without duplicating SRS configurations for each UL BWP, especially when the DL BWP is dormant, leading to inefficiencies in channel information reporting.
Innovation Solution
Configuring a periodicity for channel information transmission that is different from that of non-dormant BWP scenarios, allowing SRS/CSI reporting without duplicating configurations by extending the periodicity and linking it to pre-configured resources for dormant BWP scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If SRS configurations are duplicated for each UL BWP to enable transmission on dormant BWP, then channel information reporting capability is improved, but device complexity and signaling overhead increase
Solution Approach 1:
The patent applies universality by making a single SRS configuration serve multiple purposes - it can be used for both active BWP and dormant BWP scenarios. The configuration includes a BWP indicator field that can dynamically point to different BWPs, allowing one configuration to function universally across multiple BWPs without duplication.
Solution Approach 2:
The patent uses preliminary action by pre-configuring SRS resources and parameters in advance before the dormant BWP scenario occurs. The configuration includes all necessary parameters (frequency, time, power, etc.) that can be activated for dormant BWP without requiring real-time reconfiguration or duplication when the BWP transitions to dormant state.
2Reliability
If SRS configurations are duplicated for each UL BWP to enable transmission on dormant BWP, then channel information reporting capability is improved, but signaling overhead increases
Solution Approach 1:
The patent reduces signaling overhead by creating a universal SRS configuration that can be shared across multiple BWPs. Instead of sending separate configurations for each BWP, the network sends one configuration with a BWP indicator, significantly reducing the amount of signaling information required while maintaining full reporting capability.
Solution Approach 2:
The patent merges the SRS configuration for dormant BWP with the existing SRS configuration structure used for active BWPs. By combining these into a single unified configuration framework with a BWP indicator, the patent eliminates redundant signaling and reduces overall overhead while preserving the ability to report channel information for multiple BWPs.
3Productivity
If periodicity for channel information transmission is extended for dormant BWP, then resource efficiency is improved, but channel information freshness may deteriorate
Solution Approach 1:
The patent applies dynamics by making the SRS transmission periodicity adaptable rather than fixed. The configuration allows different periodicity values to be assigned based on BWP state (active or dormant), enabling the system to dynamically adjust resource usage while maintaining appropriate information freshness for each scenario.
Solution Approach 2:
The patent uses local quality by applying different transmission periodicity characteristics to different BWP states. Active BWPs can maintain shorter periodicity for fresher channel information, while dormant BWPs use extended periodicity for resource efficiency. The BWP indicator in the configuration allows the system to locally optimize each BWP's reporting characteristics based on its current state.
Data Source
AI summary
Example embodiments of the present disclosure relate to channel information transmitting for dormant bandwidth part. According to embodiments, a solution for channel information transmitting for dormant bandwidth part has been proposed. A terminal device is configured a periodicity when an active downlink (DL) bandwidth part (BWP) is a dormant BWP. The periodicity is different from a further periodicity which is configured and used when the active DL BWP is a non-dormant BWP. The terminal device uses resourced configured for the active uplink (UL) BWP but with the different periodicity. In this way, it allows sounding reference signal (SRS)/channel state information (CSI) reporting without duplicating configurations of BWPs. It can configure a required longer periodicity but reduce the SRS configuration for each UL BWP.