Downlink Signal Reception via Shared UE-RS for Resource Efficiency
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Solution Overview
Problem
The increasing number of user equipment (UEs) and data volume in wireless communication systems poses a challenge due to limited resources, necessitating an efficient method for transmitting and receiving uplink/downlink data and control information while reducing latency.
Innovation Solution
A method and apparatus that utilize user equipment-specific reference signals (UE-RS) to share downlink control and data channels, providing antenna port information for efficient transmission and reception of downlink signals, allowing UEs to receive downlink control and data channels based on UE-RS within shortened transmission time intervals (TTIs).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of user equipment and data volume increases, then data throughput requirement increases, but limited radio resources cause inefficiency
Solution Approach 1:
The patent merges downlink control channel and downlink data channel transmissions by allowing them to share the same antenna port and UE-specific reference signal resources. This consolidation enables more efficient utilization of limited radio resources while maintaining the ability to serve multiple UEs with increasing data throughput requirements.
Solution Approach 2:
The invention makes antenna ports and reference signals universal by enabling them to serve dual purposes: simultaneously supporting both downlink control channel transmissions and downlink data channel transmissions. This multi-functionality increases resource utilization efficiency without requiring additional dedicated resources for each channel type.
2Loss of time
If traditional downlink transmission methods are used, then system compatibility is maintained, but latency remains high
Solution Approach 1:
The patent introduces dynamic resource allocation where antenna ports and reference signals can be flexibly assigned to different channel types based on instantaneous transmission needs. This dynamic approach reduces latency by adapting resource usage in real-time rather than following rigid traditional structures, while maintaining manageable system complexity through standardized procedures.
3Reliability
If separate resources are allocated for control and data channels, then channel reliability is improved, but resource efficiency decreases
Solution Approach 1:
The patent combines control and data channel transmissions by allowing them to share antenna ports and reference signals. The UE-specific reference signal structure is designed to support both channel types simultaneously, maintaining reliable reception through proper signal design while achieving high resource utilization efficiency by eliminating redundant resource allocations.
Data Source
AI summary
Provided are method and device for transmitting/receiving a downlink signal. A user equipment-specific reference signal (UE-RS) can be transmitted to a user equipment. A downlink control channel and a downlink data channel for the user equipment can share the UE-RS. Antenna port information about a transmission antenna port of the downlink control channel and/or a transmission antenna port of the downlink data channel is provided to the user equipment. The user equipment receives UE-RS(s) corresponding to the antenna port information and thus receives the downlink control channel and the downlink data channel.