Unified DCI Paging for Reduced Capability UEs
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in signal transmission and reception procedures, particularly for UEs with reduced capabilities or requiring enhanced cell coverage, as they struggle to effectively manage paging messages and resource allocation in existing DCI formats.
Innovation Solution
The method involves transmitting and receiving paging messages by UE in a wireless communication system, where the UE transmits its paging capability to the base station, receives DCI with scheduling information for multiple PDSCHs, and decodes these messages based on indicators indicating whether the transport blocks are the same or different, allowing for efficient resource allocation and power management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional DCI formats are used for paging, then compatibility with existing systems is maintained, but efficiency for UEs with reduced capabilities deteriorates
Solution Approach 1:
The patent combines multiple paging messages into a single DCI format by merging the first PDSCH (containing common paging information) and the second PDSCH (containing UE-specific paging information) into one unified DCI structure. This allows UEs with reduced capabilities to receive both common and specific paging information efficiently without requiring separate DCI formats, thereby improving paging efficiency while maintaining system compatibility.
Solution Approach 2:
The DCI format is designed to serve multiple functions simultaneously: it can schedule the first PDSCH for common paging messages, schedule the second PDSCH for UE-specific paging messages, or indicate that both transport blocks are identical. This multi-functional DCI format improves versatility by accommodating different UE capabilities and paging scenarios within a single unified structure.
2Productivity
If separate DCI formats are designed for UEs with reduced capabilities, then paging efficiency improves, but device complexity increases
Solution Approach 1:
The patent introduces dynamic indicators within the DCI format that allow the same DCI structure to adapt its behavior based on the UE's capability. The indicator field dynamically signals whether the first and second transport blocks are identical or different, enabling UEs with reduced capabilities to efficiently process paging messages without requiring separate static DCI formats. This dynamic adaptation improves paging efficiency while avoiding the complexity of multiple fixed DCI format definitions.
3Reliability
If UEs with reduced capabilities receive paging messages, then coverage enhancement is achieved, but power consumption increases
Solution Approach 1:
The patent enables UEs with reduced capabilities to perform preliminary decoding of the first transport block in the first PDSCH to determine whether a paging message is intended for them. By checking the indicator that shows whether the first and second transport blocks are identical, UEs can avoid unnecessary processing of the second PDSCH when no UE-specific paging message is present. This preliminary action reduces power consumption while maintaining coverage enhancement benefits.
Data Source
AI summary
Various embodiments of the present disclosure relate to a next-generation wireless communication system for supporting high data transfer rates beyond the 4th generation (4G) wireless communication system. According to the various embodiments, a method of transmitting and receiving signals in a wireless communication system and apparatus for supporting the same may be provided.