5G Paging Beam Alignment Using SSB-Based PDCCH Monitoring
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in performing paging operations, particularly in 5G networks, due to the complexity of configuring PDCCH monitoring and beam management, which affects the reliability and latency of communication.
Innovation Solution
A method and device for efficiently performing paging by configuring PDCCH monitoring using synchronization signal blocks (SSBs) to align reception and transmission beams, allowing for consistent beam usage across PDCCH and PDSCH operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex PDCCH monitoring configuration is used in 5G networks, then paging operation capability is enhanced, but system complexity and configuration difficulty increase
Solution Approach 1:
The patent applies preliminary action by pre-configuring QCL (Quasi-Co-Location) relationships between SSB and PDCCH monitoring occasions before actual paging operations. The base station configures TCI (Transmission Configuration Indication) states that establish predetermined beam alignment relationships, so that when paging needs to be performed, the UE can directly use the pre-established QCL relationships without complex real-time beam management, thus reducing configuration complexity while maintaining reliable paging operations
Solution Approach 2:
The patent makes the QCL configuration mechanism universal by applying the same QCL relationship principles across multiple scenarios including initial access, paging, and random access procedures. The TCI state configuration framework established for initial access can be reused for paging operations, eliminating the need for separate complex configuration mechanisms for each function, thereby reducing overall system complexity while enhancing paging reliability
2Reliability
If beam alignment is optimized for PDCCH monitoring, then paging reception reliability is improved, but beam management complexity increases
Solution Approach 1:
The patent merges beam management for initial access with beam management for paging operations by using the same SSB-based QCL relationship. The reception beam determined during initial access based on SSB is directly reused for PDCCH monitoring in paging occasions, consolidating multiple beam management functions into a unified approach, thus improving paging reception reliability without significantly increasing beam management complexity
Solution Approach 2:
The patent applies copying by reusing the QCL relationship and beam configuration from initial access for paging operations. The TCI state that was configured during initial access to establish beam alignment is copied and applied to paging PDCCH monitoring, eliminating the need to create separate complex beam management procedures while ensuring consistent and reliable beam alignment for paging reception
3Adaptability or versatility
If multiple TCI states are configured for PDCCH, then adaptability to different transmission scenarios is improved, but configuration overhead and processing complexity increase
Solution Approach 1:
The patent applies dynamics by enabling dynamic selection and activation of TCI states through DCI (Downlink Control Information) signaling. Instead of statically configuring multiple TCI states for all scenarios, the system dynamically activates only the necessary TCI state for each specific transmission occasion based on current channel conditions and service requirements, thus providing transmission adaptability while reducing configuration overhead and processing complexity
Solution Approach 2:
The patent applies local quality by configuring different numbers and types of TCI states for different UEs and different service scenarios based on local requirements. Rather than uniformly configuring the same set of TCI states for all UEs, the base station tailors the TCI state configuration to each UE's specific needs, channel conditions, and service type, providing adaptability where needed while minimizing configuration overhead for UEs with simpler requirements
Data Source
AI summary
The disclosure relates to a 5th generation (5G) or pre-5G communication system for supporting a higher data transmission rate than 4th generation (4G) communication systems such as long-term evolution (LTE) systems. According to various embodiments of the disclosure, a method by a UE for a paging in a wireless communication system comprises receiving, from a base station, configuration information including at least one of information about a control resource set and information about a search space related to a PDCCH for the paging, identifying a synchronization signal block (SSB) corresponding to a PDCCH monitoring occasion in a control resource set and a search space set based on the configuration information, and performing PDCCH monitoring for the paging using the same reception beam as a reception beam used when receiving the synchronization signal block (SSB) and receiving a paging message on a PDSCH scheduled through the PDCCH.