5G MBS DRX Configuration for Power and Sync
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Solution Overview
Problem
In 5G communication networks, there is a challenge in designing an energy-efficient and synchronized reception system for multicast/broadcast services, particularly in managing discontinuous reception (DRX) scheduling to optimize power consumption and maintain sequence number synchronization.
Innovation Solution
The proposed method involves configuring a multicast and broadcast services (MBS) system in a 5G network to handle DRX scheduling efficiently. This includes receiving requests from user equipment (UE) for multicast services, configuring the services, and sending them over a radio resource control (RRC) reconfiguration message. The method also involves determining the appropriate DRX configuration for point-to-multipoint (PTM) and point-to-point (PTP) modes, and synchronizing DRX scheduling across different bearer configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If discontinuous reception (DRX) scheduling is implemented to reduce power consumption during MBS reception, then energy efficiency is improved, but maintaining sequence number synchronization between PTM and PTP bearers becomes more difficult
Solution Approach 1:
The patent applies preliminary action by configuring DRX parameters (drx-OnDurationTimer, drx-InactivityTimer, drx-RetransmissionTimer) in advance for both PTM and PTP bearers before MBS reception begins. This pre-configuration ensures that both bearers wake up at synchronized intervals to receive and process data, maintaining sequence number alignment while enabling power-saving sleep modes between activation periods.
Solution Approach 2:
The patent changes DRX parameters dynamically based on bearer type and service requirements. By adjusting drx-OnDurationTimer, drx-InactivityTimer, and drx-RetransmissionTimer values for different bearers, the system optimizes power consumption while ensuring that PTM and PTP bearers maintain synchronized reception windows, preventing sequence number desynchronization.
2Adaptability or versatility
If separate DRX configurations are used for PTM and PTP bearers to optimize individual bearer performance, then bearer-specific optimization is improved, but system complexity increases
Solution Approach 1:
The patent implements a universal DRX configuration framework where a single set of DRX parameters (drx-OnDurationTimer, drx-InactivityTimer, drx-RetransmissionTimer) is applied to both PTM and PTP bearers. This multi-functional approach allows the same configuration mechanism to optimize both bearer types simultaneously, reducing management complexity while maintaining bearer-specific performance through parameter tuning.
Solution Approach 2:
The patent segments the DRX configuration into distinct parameter groups for PTM and PTP bearers, allowing independent optimization of each bearer type while using a unified configuration structure. This segmentation enables bearer-specific performance optimization without creating separate management systems, balancing adaptability with complexity reduction.
3Reliability
If the UE wakes up frequently to check for MBS data to maintain synchronization, then sequence number synchronization is improved, but power consumption increases
Solution Approach 1:
The patent implements periodic DRX cycles with configured wake-up intervals (drx-OnDurationTimer) that balance synchronization requirements with power saving. The UE wakes up periodically at predetermined intervals to check for MBS data on both PTM and PTP bearers, maintaining sequence number synchronization through regular monitoring while consuming minimal power during sleep periods between wake-ups.
Solution Approach 2:
The patent uses preliminary configuration of DRX timers and parameters to pre-determine wake-up schedules before data reception begins. This pre-planned periodic action ensures the UE wakes up exactly when needed to maintain synchronization, avoiding unnecessary wake-ups that would increase power consumption while ensuring no data is missed.
Data Source
AI summary
The disclosure relates to a pre-5th generation (5G) or 5G communication system for supporting higher data rates beyond a 4th generation (4G) communication system such as long term evolution (LTE). A method performed by a network entity for handling a multicast and broadcast service (MBS) in a 5G communication network is provided that includes receiving a request for receiving at least one multicast service from a user equipment (UE), which includes at least one of a session join request or a service request, configuring the at least one multicast service based on the request, and sending the at least one multicast service to the UE over a radio resource control (RRC) reconfiguration message, which includes at least one of a point-to-multipoint (PTM) bearer configuration for a point-to-point (PTM) mode, a PTP bearer configuration for a PTP mode, or a split bearer configuration for a split bearer mode.