Bandwidth Part Resource Configuration for 5G Service Coexistence
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Solution Overview
Problem
There is a need for a method and apparatus to facilitate the coexistence of different types of services, such as enhanced mobile broadband (eMBB), massive machine-type communications (mMTC), and ultra-reliable and low-latency communications (URLLC), in 5G/NR wireless communication systems, particularly in scenarios where URLLC service data needs to be transmitted during eMBB service data scheduling, requiring efficient service-specific information transmission.
Innovation Solution
The implementation of semi-persistent scheduling (SPS) and grant-free resource configuration methods, where configuration information for downlink assignments is transmitted via higher layer signaling, allowing data communication on activated bandwidth parts (BWP) with both higher layer signaling and downlink control information (DCI) defining the assignment, enabling efficient resource utilization and service coexistence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If URLLC service data is transmitted during eMBB service data scheduling, then service coexistence and resource utilization are improved, but service-specific information transmission efficiency deteriorates
Solution Approach 1:
The patent segments service-specific information into separate fields within the DCI structure, with dedicated bits for indicating URLLC service characteristics, resource allocation, and scheduling parameters. This segmentation allows eMBB and URLLC services to be scheduled simultaneously without information loss, as each service type has its own designated information fields in the downlink control information.
2Productivity
If multiple services are scheduled simultaneously, then resource utilization is improved, but scheduling complexity increases
Solution Approach 1:
The patent implements a universal DCI structure that can handle multiple service types (eMBB, URLLC, mMTC) simultaneously through a unified scheduling framework. The DCI format includes configurable fields that adapt to different service requirements, allowing the same downlink control information structure to serve multiple purposes and reduce scheduling complexity despite handling diverse service types.
3Adaptability or versatility
If grant-free resources are configured per BWP, then adaptability to bandwidth switching is improved, but configuration complexity increases
Solution Approach 1:
The patent implements dynamic grant-free resource configuration that automatically adapts to BWP switching through higher layer signaling. When the network switches the active BWP, the grant-free resource allocation is dynamically updated via RRC signaling or MAC CE, allowing the system to maintain adaptability to different bandwidth configurations without manual reconfiguration, thus managing complexity through automated dynamic adjustment.
Data Source
AI summary
Methods and apparatuses in a wireless communication system is provided. Configuration information for defining a downlink assignment for a bandwidth part (BWP) is transmitted to a user equipment (UE) by higher layer signaling. At least one BWP is configured in a cell of the base station and the higher layer signaling is UE specific. An activated BWP is identified. Downlink control information (DCI) is transmitted on the activated BWP. Data is transmitted to the UE on the activated BWP according to the downlink assignment for the activated BWP. The downlink assignment is defined on the activated BWP, based on both the configuration information by the higher layer signaling and remaining information by the DCI.