Dynamic Scheduling Indicator for MBMS Power Preservation
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Solution Overview
Problem
Existing MBMS service in LTE networks employs static scheduling, leading to inefficient resource utilization and power wastage in user equipment due to continuous reception of all subframes, even if only a subset is needed.
Innovation Solution
Implementing dynamic scheduling in SFN networks by providing user equipment with transmission order and schedule information, including beginning indices of multimedia services, to enable selective data reception and reduce power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If static scheduling is used for MBMS service, then implementation is simple, but resource utilization is inefficient and user equipment power is wasted
Solution Approach 1:
The patent transitions from static scheduling to dynamic scheduling by introducing a scheduling indicator that dynamically indicates which subframes contain MBMS data. This allows the system to adapt transmission scheduling to actual service needs, enabling user equipment to wake up only when data is transmitted, thereby reducing power consumption while maintaining implementation feasibility through standardized signaling mechanisms.
2Reliability
If user equipment receives all subframes, then no data is missed, but power consumption increases unnecessarily
Solution Approach 1:
The patent extracts only the necessary subframe information from the complete subframe set by introducing a scheduling indicator that specifies which subframes contain MBMS data. User equipment uses this indicator to selectively receive only relevant subframes, extracting necessary data while discarding unnecessary reception operations, thus reducing power consumption without compromising data completeness.
3Productivity
If dynamic scheduling is implemented, then resource utilization improves and power is saved, but system complexity increases
Solution Approach 1:
The patent introduces a scheduling indicator as an intermediary element that mediates between the base station's transmission scheduling and user equipment's reception decisions. This indicator, transmitted through existing signaling channels, carries subframe allocation information that enables dynamic scheduling functionality without requiring complex direct communication protocols between base station and user equipment, thus managing system complexity effectively.
4Adaptability or versatility
If multiple multimedia services are multiplexed on a single MCH, then resource sharing is achieved, but scheduling complexity increases
Solution Approach 1:
The patent segments the scheduling information for multiple multimedia services by introducing a service identifier field in the scheduling indicator. Each service's subframe allocation is independently indicated with its corresponding service identifier, allowing the base station to multiplex multiple services on a single MCH while enabling user equipment to selectively receive services based on their subscriptions, thus managing scheduling complexity through structured information segmentation.
Data Source
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AI summary
Disclosed are methods for transmitting and receiving multimedia service data, base station and user equipment. The method for transmitting multimedia service data comprises steps of: receiving transmission order information representing the order in which a plurality of multimedia services is to be transmitted; generating schedule information including the beginning indices of the plurality of multimedia services; and transmitting data of the plurality of multimedia services based on the transmission order information and the schedule information. With the methods and equipment of the present invention, dynamic scheduling for MBMS service can be implemented in a SFN network so that power preservation of user equipment can be achieved in the case of discontinuous transmission and statistical multiplexing can be performed easily.