Group-Common Signaling for Point-to-Multipoint Reconfiguration
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Solution Overview
Problem
Current mobile and wireless telecommunication systems face challenges in efficiently reconfiguring large groups of user equipment (UEs) for point-to-multipoint (PTM) transmission, leading to high signaling load and latency, which impacts power consumption and alignment with discontinuous reception (DRX) patterns.
Innovation Solution
Implementing a group-common signaling configuration using a shared radio bearer (SRBx) for PTM transmission, allowing UEs to receive updated configurations without individual dedicated signaling, and incorporating a version flag for configuration management and retransmissions to ensure all UEs receive the new configuration efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If individual dedicated signaling is used to reconfigure each user equipment for point-to-multipoint transmission, then configuration accuracy is ensured, but signaling load and latency increase significantly
Solution Approach 1:
The patent merges individual dedicated signaling into a single group-common signaling message that can be received by multiple UEs simultaneously. The group-common reconfiguration message contains configuration information that is applicable to a group of UEs, allowing them to be reconfigured together rather than individually, thus reducing signaling latency while maintaining configuration accuracy through the structured format of the group-common message.
Solution Approach 2:
The patent segments the configuration information into different parts: common configuration parameters that apply to all UEs in the group, and UE-specific parameters that can be individually addressed within the group-common message. This segmentation allows efficient group-wide reconfiguration while preserving the ability to provide accurate individual configuration when needed.
2Reliability
If individual dedicated signaling is used for PTM reconfiguration, then configuration reliability is maintained, but power consumption increases due to continuous monitoring
Solution Approach 1:
The patent combines multiple individual reconfiguration signals into a single group-common signaling transmission. UEs can monitor for group-common signaling at predetermined times and frequencies, reducing the need for continuous individual signal monitoring. This merging approach maintains configuration reliability through the structured group-common message format while significantly reducing power consumption by allowing UEs to enter low-power states between group signaling events.
Solution Approach 2:
The patent implements periodic group-common signaling transmissions at predetermined intervals, allowing UEs to monitor configurations periodically rather than continuously. UEs can wake up at scheduled times to receive group-common reconfiguration messages and then return to low-power states, maintaining configuration reliability through regular updates while minimizing power consumption during idle periods.
3Productivity
If group-common signaling is used for PTM reconfiguration, then signaling load is reduced, but configuration management complexity increases
Solution Approach 1:
The patent segments configuration management into group-level parameters and UE-specific parameters. The group-common signaling message contains a structured format with clear fields for common configuration data and mechanisms for UE-specific indications. This segmentation simplifies configuration management by separating concerns: the network manages group-level configurations through standardized group-common messages, while UE-specific adjustments are handled through defined parameters within the same message structure.
Solution Approach 2:
The patent uses parameter changes within the group-common signaling message to indicate reconfiguration needs. The message includes parameters such as version indicators, configuration update flags, and specific configuration data fields that change based on reconfiguration requirements. This parameter-based approach simplifies configuration management by providing a standardized, flexible framework that can accommodate different reconfiguration scenarios without requiring complex message structures.
4Loss of time
If frequent reconfiguration messages are sent to ensure all UEs receive updates, then configuration freshness is improved, but signaling overhead increases
Solution Approach 1:
The patent merges multiple configuration updates into single group-common signaling messages that can deliver comprehensive reconfiguration information to multiple UEs simultaneously. By consolidating configuration data into structured group-common messages with efficient encoding, the system achieves frequent configuration updates without proportionally increasing signaling overhead, as each group-common message serves multiple UEs at once.
Solution Approach 2:
The patent implements partial reconfiguration updates where only changed parameters are transmitted in group-common signaling messages rather than complete configuration sets. The messaging includes version indicators and change flags that allow UEs to efficiently process only relevant updates, reducing signaling overhead while maintaining configuration freshness by transmitting updates as they occur without waiting for complete reconfiguration cycles.
Data Source
AI summary
Systems, methods, apparatuses, and computer program products for the configuration of user device(s) for reception of point-to-multipoint transmission are provided. One method may include receiving, at a user equipment, a configuration for point-to-multipoint reception of a group-common transport channel. The configuration may include a group-common signaling configuration for a group of user equipment. The method may also include receiving, at the user equipment, a point-to-multipoint reconfiguration message using the group-common signaling configuration on the group-common transport channel from a device (e.g., a network node). The point-to-multipoint reconfiguration message may include an updated point-to-multipoint configuration. The method may then include receiving point-to-multipoint data, from the device on the group-common transport channel, based on the updated point-to-multipoint configuration.