Multicast Broadcast Control Information Monitoring
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently updating multicast broadcast control information across different multiple access technologies, leading to varying performance and power consumption issues depending on the MB system design.
Innovation Solution
The method involves a user equipment (UE) receiving notifications of changes in multicast broadcast control information through various channels like MB control channels, system information blocks, or unicast RRC messages, and monitoring resources to obtain updated information, while the base station transmits these notifications and updates using PDCCH communications addressed to specific RNTIs, allowing for flexible and power-efficient signaling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multicast broadcast control information is updated using traditional signaling techniques, then UEs can obtain updated information, but UE power consumption increases and system overhead increases
Solution Approach 1:
The patent extracts only the essential notification signal from the full MB control information update process. Instead of transmitting complete MB control information updates through traditional signaling, the system transmits only a compact notification indicator that triggers UE monitoring, significantly reducing power consumption while maintaining update reliability.
Solution Approach 2:
The patent applies partial action by implementing selective monitoring where UEs only monitor for MB control information updates when specifically notified. This avoids continuous monitoring and processing of all MB signaling, reducing power consumption to the minimum necessary level while ensuring updates are received when needed.
2Reliability
If traditional MB signaling techniques are used, then MB control information can be transmitted, but system overhead increases
Solution Approach 1:
The patent uses a simplified notification copy or indicator instead of transmitting the full MB control information through traditional signaling channels. This notification serves as a compact representation that triggers selective monitoring, reducing system overhead while ensuring complete information can be obtained when needed.
3Speed
If MB control information is continuously monitored, then UEs can obtain updates promptly, but power consumption increases
Solution Approach 1:
The patent implements periodic action through event-triggered monitoring. Instead of continuous monitoring, UEs periodically check for MB control information updates only when a notification is received. This maintains prompt update reception speed while dramatically reducing power consumption by keeping the monitoring function dormant during periods without updates.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a notification of a change to multicast broadcast (MB) control information associated with at least one MB service to which the UE is subscribed, the MB control information being included in an MB control channel (MBCCH) scheduled by a physical downlink control channel (PDCCH) communication addressed to an MB radio network temporary identifier (MB-RNTI); and monitor one or more resources of the MBCCH to receive updated MB control information based at least in part on receiving the notification of the change to the MB control information. Numerous other aspects are provided.