BWP Scheduling in 5G NR Using DCI Indication
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Solution Overview
Problem
Next-generation/5G radio access networks require efficient methods to schedule data channels using various bandwidth parts (BWPs) to meet the diverse requirements of enhanced mobile broadband, massive machine-type communication, and ultra-reliable and low-latency communication scenarios, which existing technologies have not adequately addressed.
Innovation Solution
A method and apparatus for setting up and activating BWPs for transceiving data channels between user equipment (UE) and a base station (BS), involving the reception and transmission of BWP setup information and downlink (DL) or uplink (UL) control information (DCI) to indicate the appropriate BWP for data channel operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple bandwidth parts (BWPs) are configured for different usage scenarios, then the system can meet diverse communication requirements (eMBB, mMTC, URLLC), but the device complexity and scheduling difficulty increase
Solution Approach 1:
The patent divides the bandwidth into multiple bandwidth parts (BWPs), each configured for specific usage scenarios (eMBB, mMTC, URLLC). This segmentation allows the system to handle different traffic types independently, reducing overall scheduling complexity while maintaining versatility across diverse communication requirements.
Solution Approach 2:
The patent implements dynamic BWP switching mechanisms where the network can activate different BWPs based on current traffic demands and scenario requirements. This dynamic approach enables flexible adaptation to changing conditions without permanently configuring complex multi-scenario resources, thereby managing device complexity while preserving adaptability.
2Adaptability or versatility
If flexible frame structures are designed for different usage scenarios, then the system can satisfy specific scenario requirements, but the system complexity increases compared to LTE
Solution Approach 1:
The patent applies different frame structure configurations to specific bandwidth parts based on their intended usage scenarios. Each BWP can have optimized frame structures tailored to its scenario (e.g., shorter TTIs for URLLC, wider bandwidths for eMBB), while other BWPs maintain simpler structures, thereby achieving scenario-specific optimization without uniformly increasing overall system complexity.
3Productivity
If BWP setup information and DCI are transmitted to indicate BWPs, then efficient data channel scheduling is achieved, but the control signaling overhead increases
Solution Approach 1:
The patent designs the Downlink Control Information (DCI) format to serve multiple functions: it not only schedules data channels but also indicates BWP switching, activates/deactivates BWPs, and conveys resource allocation information. This multi-functionality reduces the need for separate control messages, thereby improving scheduling efficiency while minimizing control signaling overhead.
Data Source
AI summary
Disclosed are a method and apparatus for scheduling a data channel to support a user equipment (UE) using various bandwidth parts (BWPs) in a next-generation/5G radio access network. According to one embodiment, a method may be provided for receiving a downlink (DL) data channel or transmitting an uplink (UL) data channel by a user equipment (UE). The method may include: receiving bandwidth part (BWP) setup information about a BWP set configured with one or more BWPs set up with regard to the UE from a base station (BS); and receiving DL control information (DCI) including information for indicating one among the one or more BWPs included in the BWP set configured by the BWP setup information from the BS, wherein a DL data channel is received or a UL data channel is transmitted through the one BWP indicated by the DCI.