BWP Configuration and Switching in Wireless Communication Systems
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Solution Overview
Problem
Current mobile communication systems face challenges in supporting high-speed data services, large data traffic, increased connection devices, low latency, and energy efficiency, particularly in configuring and managing bandwidth parts (BWP) and control resource sets (CORESET) for efficient BWP switching.
Innovation Solution
A method for configuring and operating BWPs in a wireless communication system, involving receiving initial and additional BWP configurations, processing DCI for BWP switching, and transmitting/receiving signals based on activated BWPs, with a shared CORESET configured between BWPs, allowing for BWP activation/deactivation and acknowledging DCI messages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If BWP switching is implemented to support high-speed data services and large data traffic, then system adaptability and service capability are improved, but device complexity and configuration management difficulty increase
Solution Approach 1:
The patent divides the bandwidth into multiple Bandwidth Parts (BWPs) that can be independently configured and activated. Each BWP is defined with specific parameters including frequency location, bandwidth size, and numerology, allowing the system to segment the total bandwidth into manageable, flexible units that can be dynamically assigned to different UEs based on service requirements.
Solution Approach 2:
The patent implements dynamic BWP switching through DCI signaling, where the network can activate or deactivate specific BWPs for UEs based on real-time traffic conditions and service requirements. This dynamic configuration allows the system to adapt bandwidth allocation flexibly without requiring full system reconfiguration, thereby managing complexity while maintaining high adaptability.
2Adaptability or versatility
If multiple BWPs are configured for different service requirements, then service versatility is improved, but control resource management complexity increases
Solution Approach 1:
The patent configures Control Resource Sets (CORESETS) to serve multiple BWPs simultaneously. A single CORESET can be associated with multiple BWPs, allowing control channels to be efficiently managed across different bandwidth configurations. This multi-functional approach reduces the need for separate control resources for each BWP, thereby managing complexity while supporting diverse services.
Solution Approach 2:
The patent merges control resource management by allowing a shared CORESET to handle control signaling for multiple BWPs. This consolidation reduces the overall number of control resources needed and simplifies the management architecture, while still providing dedicated data resources for each service type through separate BWP configurations.
3Reliability
If BWP configuration messages are transmitted frequently to manage switching, then BWP operation reliability is improved, but signaling overhead and system resource consumption increase
Solution Approach 1:
The patent pre-configures multiple BWPs and their associated parameters through RRC signaling before actual data transmission begins. This preliminary configuration establishes the BWP framework in advance, allowing subsequent BWP switching to be performed through more efficient DCI signaling rather than requiring complete reconfiguration messages, thereby reducing signaling overhead while maintaining reliability.
Solution Approach 2:
The patent uses DCI (Downlink Control Information) to transmit compact switching commands that reference pre-configured BWP parameters. Instead of transmitting full BWP configuration messages during switching operations, the system transmits concise DCI messages that point to previously defined BWP configurations, significantly reducing signaling overhead while ensuring reliable and consistent BWP activation.
Data Source
AI summary
This specification provides a method of performing a bandwidth part (BWP) operation in a wireless communication system. Specifically, The method performed by a terminal includes receiving a first message including information related to at least one initial BWP configuration from a network, receiving a second message including configuration information for an additional BWP from the network, receiving downlink control information (DCI) related to BWP switching for at least one configured BWP from the network, and transmitting and receiving signals to and from the network in an activated BWP based on the received DCI.