5G Multi-BWP Updates via Dedicated Signaling Without Common Search Space
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Solution Overview
Problem
In the 5G wireless communication system, user equipment (UE) configured with an active downlink bandwidth part (BWP) that does not have a common search space cannot receive system information updates, leading to failure in acquiring updated system information.
Innovation Solution
A method and apparatus for transmitting updated system information to UE via dedicated signaling when the active DL BWP is not configured with a common search space, using radio resource control (RRC) messages or SI update indications followed by on-demand SI procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If UE is configured with an active DL BWP without a common search space, then bandwidth utilization and spectral efficiency are improved, but system information reception reliability deteriorates
Solution Approach 1:
The patent introduces a common search space within the active DL BWP as an intermediary mechanism. This common search space contains downlink control information (DCI) that schedules system information blocks (SIBs), enabling UEs to receive system information updates even when operating in a BWP optimized for data transmission without traditional common search spaces. The common search space acts as a bridge between the data-optimized BWP configuration and the system information delivery requirement.
2Adaptability or versatility
If multiple bandwidth parts are configured on a carrier, then system adaptability and service diversity are improved, but device complexity increases
Solution Approach 1:
The patent segments the downlink bandwidth into multiple bandwidth parts (BWPs), each with distinct characteristics optimized for different services. The system configures multiple BWPs (e.g., first BWP and second BWP) with different bandwidths, numerologies, or frequency locations, and enables dynamic switching between them. This segmentation allows the system to adapt to diverse service requirements while managing complexity through structured configuration and switching mechanisms.
Solution Approach 2:
The patent implements dynamic BWP switching and activation mechanisms. The network can activate different BWPs based on service requirements, and UEs can switch between configured BWPs dynamically. This dynamic approach allows the system to adapt to changing traffic patterns and service demands without requiring static, overly complex configurations for all possible scenarios simultaneously.
3Reliability
If system information is transmitted via dedicated signaling, then information delivery reliability is improved, but signaling overhead increases
Solution Approach 1:
The patent enables UEs to autonomously acquire system information through on-demand procedures. When a UE needs system information updates, it can initiate an on-demand SI request, and the network responds by providing the requested information. This self-service mechanism reduces the need for continuous broadcast of all system information, allowing the system to deliver information reliably only when needed, thereby reducing overall signaling overhead while maintaining delivery reliability.
Data Source
AI summary
The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. The method for transmitting system information by a base station in a wireless communication system, the method comprising identifying whether an active downlink (DL) bandwidth part (BWP) of a user equipment (UE) is configured with common search space, and transmitting, to the UE, an updated system information in a dedicated signaling when the active DL BWP of the UE is not configured with the common search space