Downlink BWP Activation via MAC Control Elements
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Solution Overview
Problem
There is no established method for controlling the activation and deactivation of Bandwidth Parts (BWP) in terminal devices, particularly for downlink BWP configurations, which can lead to inefficiencies in managing active and inactive states of multiple BWPs.
Innovation Solution
The method involves network-side control for activating and deactivating downlink BWPs using Media Access Control (MAC) control elements, Downlink Control Information (DCI), preconfigured time rules, and inactivity timers to manage the active and inactive states of BWPs, ensuring efficient switching and configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple downlink BWPs are configured on a carrier for terminal devices, then scheduling efficiency and resource utilization are improved, but control complexity and management difficulty increase due to lack of established activation/deactivation methods
Solution Approach 1:
The patent segments the bandwidth resource into multiple independent Bandwidth Parts (BWPs), each with distinct parameters (numerology, center frequency, bandwidth). This segmentation allows the network to configure multiple downlink BWPs on a carrier, enabling flexible scheduling and resource allocation while maintaining manageable control through individual BWP activation/deactivation mechanisms.
Solution Approach 2:
The patent introduces dynamic activation and deactivation mechanisms for BWPs, allowing the network to control which BWP is active at any given time through MAC control elements and DCI. This dynamic control enables the system to adapt resource allocation in real-time, improving scheduling efficiency while maintaining manageable complexity through standardized control procedures.
2Productivity
If network-side control mechanisms are implemented for BWP activation and deactivation, then resource utilization is optimized, but system complexity and implementation difficulty increase
Solution Approach 1:
The patent implements universal control mechanisms that can be applied across different BWP configurations and scenarios. The MAC control element and DCI-based activation/deactivation methods provide a unified approach that works for various BWP setups, reducing implementation difficulty through standardized procedures while optimizing resource utilization across the network.
Solution Approach 2:
The patent enables the system to automatically manage BWP activation and deactivation through preconfigured time rules and inactivity timers. These self-service mechanisms reduce the need for manual intervention and complex control logic, optimizing resource utilization while simplifying implementation through automated decision-making based on predefined criteria.
3Productivity
If precise control over BWP states is achieved through multiple control mechanisms, then scheduling efficiency is enhanced, but control mechanism complexity increases
Solution Approach 1:
The patent introduces MAC control elements as intermediary mechanisms between the network and terminal devices for BWP activation/deactivation. These intermediaries provide a standardized interface that simplifies control while enabling precise scheduling. The MAC CE acts as a mediator that carries activation/deactivation commands, reducing direct complexity in the control mechanisms while maintaining scheduling efficiency.
4Productivity
If inactivity timers and preconfigured time rules are used for automatic BWP management, then resource optimization is improved, but system complexity and rule management difficulty increase
Solution Approach 1:
The patent implements preconfigured time rules and inactivity timers that are established in advance through RRC signaling. These preliminary actions enable automatic BWP management without real-time complex decision-making. The timers and rules are configured beforehand, simplifying runtime operations while achieving resource optimization through automated activation/deactivation based on predefined criteria.
Data Source
AI summary
A method for downlink bandwidth part (BWP) activating and deactivating and a terminal device are provided. The method comprises: the terminal device performs, based on control of a network side, activation and deactivation to at least one downlink BWP configured on a carrier.