Receiver Device Point-to-Multipoint Service Configuration
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Solution Overview
Problem
Current point-to-multipoint communication systems face challenges in efficiently managing and configuring multicast and broadcast services, particularly for devices in idle or inactive states, due to the need to determine whether services are TRS-based or SSB-based, which affects decoding physical channels and requires selective configuration delivery to optimize resource use.
Innovation Solution
A receiver device monitors control channels to detect point-to-multipoint services and transmission types, sending requests for configurations only when necessary, and refrains from requesting configurations for services not of interest, allowing it to monitor point-to-multipoint transmissions based on synchronization signal blocks, while an access node sends configuration indications on control channels and signals configurations in system information blocks for receiver devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If configuration information is broadcast to all receiver devices, then all devices can receive point-to-multipoint services, but unnecessary signaling overhead and network congestion increase
Solution Approach 1:
The patent applies local quality by differentiating configuration delivery based on device characteristics and service interest. Receiver devices in idle or inactive states receive configuration information selectively through system information blocks only when they express interest or are in coverage enhancement modes, while active devices use different procedures. This ensures that configuration information is delivered with appropriate granularity to specific device groups rather than universally, reducing unnecessary signaling overhead while maintaining service reception capability for all devices that need it.
2Reliability
If receiver devices monitor all control channels continuously, then no service of interest is missed, but power consumption increases
Solution Approach 1:
The patent implements periodic action by configuring receiver devices to monitor control channels at specific intervals rather than continuously. Devices in idle or inactive states transition to active state periodically to check for service announcements and configuration information, then return to low-power mode. This periodic monitoring approach maintains service detection reliability for point-to-multipoint services while significantly reducing power consumption compared to continuous monitoring, as devices only wake up when configuration updates are expected or services are announced.
3Adaptability or versatility
If configuration information is provided for all transmission types, then all service types can be supported, but devices receive unnecessary configurations for services not of interest
Solution Approach 1:
The patent applies preliminary action by having receiver devices indicate their service interest or requirements before receiving detailed configuration information. Devices in idle or inactive states can signal which point-to-multipoint services they are interested in, allowing the network to provide only the relevant configuration information for those specific services. This preliminary indication mechanism ensures that devices receive configurations only for transmission types they actually need, eliminating waste of resources on useless configuration data while maintaining support for multiple transmission types including TRS-based and SSB-based services.
Data Source
AI summary
Apparatuses and methods are provided to enable a receiver device monitoring a control channel configured for carrying information indicating transmission types of point-to-multipoint services detect a point-to-multipoint service of interest. The device can further detect an indication of a transmission type associated with the point-to-multipoint service of interest. In response a request can be sent for a configuration enabling reception of the indicated transmission type of the point-to-multipoint service of interest on a point-to-multipoint traffic channel. In the absence of said further detecting, the device can refrain from sending the request for the configuration for reception of the transmission type of the point-to-multipoint service.