Inactive Mode Multicast Reception via PDCCH and PDSCH Configuration
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Solution Overview
Problem
Current wireless communication systems lack defined capabilities, features, and configurations for multicast communications in user equipment (UE) operating in inactive mode, which limits network performance and efficiency.
Innovation Solution
The implementation of specific signaling and configurations for multicast physical downlink control channel (PDCCH) and physical downlink shared channel (PDSCH) communications in inactive mode, including control resource set (CORESET) configurations, search space configurations, and reliability features, enables UE to receive multicast communications effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multicast communication capabilities are extended to inactive mode UE, then network efficiency and performance are improved, but device complexity and configuration complexity increase
Solution Approach 1:
The patent segments multicast communication capabilities into mode-specific configurations, defining separate capability sets for connected mode and inactive mode UEs. This allows the network to selectively apply appropriate configurations based on UE operational state, improving network efficiency without universally increasing complexity across all UE states.
Solution Approach 2:
The patent applies local quality by providing tailored multicast configurations specifically for inactive mode UEs, including mode-specific parameters for PDCCH monitoring, PDSCH reception, and capability indication. This targeted approach enables efficient multicast support where needed while maintaining simpler configurations for other operational modes.
2Reliability
If multicast PDCCH and PDSCH configurations are implemented for inactive mode, then reception capability is improved, but signaling overhead increases
Solution Approach 1:
The patent extracts and defines specific multicast-related parameters and configurations that are applicable to inactive mode UEs, separating them from general connected mode configurations. This includes extracting mode-specific capabilities for PDCCH monitoring and PDSCH reception, allowing precise control over signaling overhead while maintaining necessary reception capabilities.
Solution Approach 2:
The patent introduces parameter changes by defining new capability indicators and configuration parameters specific to inactive mode multicast reception. These parameters enable the network to adapt signaling overhead based on actual UE capabilities and requirements, optimizing the balance between reception reliability and signaling efficiency.
3Adaptability or versatility
If capability information for multicast in inactive mode is transmitted, then communication versatility is improved, but uplink transmission requirements increase
Solution Approach 1:
The patent applies dynamics by making capability indication optional and conditional for inactive mode UEs. The UE can dynamically indicate its multicast capabilities when transitioning to or from inactive mode, rather than continuously transmitting capability information. This approach enhances communication versatility while minimizing uplink transmission requirements and energy consumption.
Solution Approach 2:
The patent creates a universal capability indication mechanism that can be applied across different UE operational modes (connected, inactive, idle). The same capability information structure serves multiple functions: indicating multicast reception capability, guiding network configuration, and enabling mode-specific optimizations, thereby improving versatility without proportionally increasing uplink requirements.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit capability information regarding at least one of a multicast physical downlink shared channel (PDSCH) communication for an inactive mode or a multicast physical downlink control channel (PDCCH) communication for the inactive mode. The UE may receive a configuration associated with the multicast PDCCH communication. The UE may receive the multicast PDCCH communication in accordance with the configuration. The UE may receive the multicast PDSCH communication in the inactive mode based at least in part on the multicast PDCCH communication, wherein at least one of the configuration, or the multicast PDSCH communication is based at least in part on the capability information. Numerous other aspects are described.