Reference Signal Transmission Using BWP Rate Matching
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing uplink and downlink transmission/reception operations for various services, particularly in 5G systems, which require efficient management of reference signals to support diverse services like eMBB, mMTC, and URLLC with different requirements.
Innovation Solution
A method and apparatus are provided for transmitting and receiving reference signals using bandwidth part configuration information and uplink rate matching or puncturing configuration, which includes information on downlink reference signal patterns and bitmaps indicating time and frequency resources, to optimize resource allocation for efficient uplink and downlink operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If bandwidth part configuration and uplink rate matching/puncturing configuration are used to manage reference signals, then resource allocation efficiency is improved, but system complexity increases
Solution Approach 1:
The patent divides the uplink bandwidth into multiple bandwidth parts (BWPs), each configured with specific reference signal patterns and rate matching parameters. This segmentation allows different services (eMBB, mMTC, URLLC) to be allocated to different BWPs with optimized reference signal configurations, improving resource allocation efficiency while managing complexity through modular organization
Solution Approach 2:
The base station performs preliminary configuration of bandwidth parts, reference signal patterns, and rate matching parameters before actual data transmission. The uplink rate matching configuration information and puncturing configuration information are pre-established and stored, allowing UEs to efficiently allocate resources without real-time complex calculations, thus improving efficiency while reducing operational complexity
2Reliability
If rate matching and puncturing are applied to align resource allocation with service requirements, then service reliability is improved, but processing complexity increases
Solution Approach 1:
Different rate matching and puncturing patterns are applied to different bandwidth parts and resource regions based on specific service requirements. For example, URLLC services receive priority puncturing patterns while eMBB services use standard rate matching, allowing each service to have optimized reliability parameters without requiring complex system-wide processing for each transmission
Solution Approach 2:
The patent enables dynamic selection and switching of rate matching and puncturing patterns based on current service demands and channel conditions. The base station can dynamically configure different bandwidth parts with appropriate rate matching parameters, allowing the system to adapt to varying reliability requirements while managing processing complexity through standardized dynamic adjustment mechanisms
Data Source
AI summary
The present disclosure relates to a method by a base station and a terminal in a wireless communication system. A method by a terminal according to an embodiment may comprise the steps of: receiving, from a base station, bandwidth part configuration information and higher-layer signaling including uplink rate matching configuration information or uplink puncturing configuration information; receiving, from the base station, downlink control information for scheduling transmission of uplink data; identifying a resource for transmission of the uplink data on the basis of the uplink rate matching configuration information or uplink puncturing configuration information, and transmitting the uplink data to the base station through the identified resource.