DRX Cycle Alignment for MBS Service Power Reduction
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Solution Overview
Problem
Current wireless network technologies face challenges in managing Discontinuous Reception (DRX) operations for Multicast Broadcast Service (MBS) services, leading to high power consumption due to misalignment of paging occasions with awake periods, especially in idle or inactive modes, and lack of efficient Wake-Up Signal (WUS) management for connected modes.
Innovation Solution
The proposed solution involves aligning paging occasions with DRX cycles and managing DRX cycles based on Wake-Up Signals received from the network, allowing User Equipment (UE) to optimize power consumption by matching awake periods with MBS service reception requirements in idle modes and adjusting DRX operations in connected modes based on WUS indications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If DRX operations are implemented for MBS services without alignment with paging occasions, then power consumption increases due to frequent wake-ups, but service reception reliability is maintained
Solution Approach 1:
The patent combines the paging occasion alignment mechanism with DRX cycle management to create a unified approach where the UE wakes up for paging at aligned occasions and utilizes the awake period to receive MBS services. This merging of functions allows the UE to maintain service reception reliability while reducing the number of separate wake-up events, thereby lowering power consumption.
Solution Approach 2:
The patent applies preliminary action by having the UE wake up for paging at aligned occasions before the actual MBS service transmission. The UE performs preliminary paging reception and DRX cycle management at these aligned wake-up points, which prepares the UE for subsequent MBS service reception without requiring additional separate wake-ups, thus reducing overall power consumption while maintaining reliability.
2Reliability
If the UE wakes up frequently to check for MBS service allocations, then service reception is reliable, but power consumption increases
Solution Approach 1:
The patent implements feedback mechanisms where the network provides information about MBS service allocations and DRX cycle configurations to the UE. The UE uses this feedback information to optimize its wake-up schedule and DRX cycle management, allowing it to maintain reliable service reception by waking up only when necessary based on network-provided feedback about service availability and timing.
Solution Approach 2:
The patent applies dynamics by making the DRX cycle parameters and wake-up schedule adaptable rather than fixed. The UE dynamically adjusts its DRX configuration based on network conditions, service availability, and feedback information. This dynamic adjustment allows the UE to optimize the balance between power consumption and service reception reliability by adapting wake-up patterns to actual service needs rather than following a rigid schedule.
3Productivity
If DRX cycles are not aligned with paging occasions, then the UE can receive MBS services efficiently, but the UE must manage multiple independent DRX cycles increasing complexity
Solution Approach 1:
The patent merges the paging occasion management function with the MBS service DRX cycle management function. By aligning paging occasions with MBS service reception periods, the patent creates a unified DRX management approach where a single aligned DRX cycle serves both paging and MBS service reception purposes. This merging eliminates the need to manage multiple independent DRX cycles, reducing UE complexity while maintaining service reception efficiency.
Solution Approach 2:
The patent applies universality by designing the aligned DRX cycle to serve multiple functions: paging reception, MBS service allocation checking, and actual service reception. This multi-functional DRX cycle eliminates the need for separate dedicated cycles for each function, simplifying UE management while maintaining efficient service reception. The single DRX cycle structure handles all these tasks through coordinated timing and signaling.
Data Source
AI summary
The present disclosure relates to a pre-5th generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4th generation (4G) communication system such as long term evolution (LTE). A method for managing power consumption of a UE while receiving MBS services includes aligning a paging occasion of paging reception to match awake periods of a paging DRX cycle with awake periods of a DRX configuration intended for reception of the MBS services, if the UE is in an idle/inactive mode and managing a DRX cycle based on the aligned PO to receive the MBS services, and receiving a WUS from a network indicating presence or absence of allocations for the UE to receive the MBS services in a MBS service DRX cycle, if the UE is in a connected mode and managing the DRX cycle based on the received WUS to receive the MBS services.