MBMS Content-Aware Scheduling for Wireless UE Power Optimization

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Solution Overview

Problem

In wireless communication systems, especially in LTE and LTE-Advanced networks, existing MBMS scheduling methods broadcast all resolution levels of multimedia broadcast multicast services (MBMS) to all user equipment (UEs), leading to inefficient power consumption as UEs receive and decode unnecessary high-resolution data, even if only low-resolution data is required, due to the eNB's inability to determine individual UE screen sizes and usage scenarios.

Innovation Solution

Implementing MBMS content-aware scheduling and receiving by transmitting dynamic scheduling information (DSI) units for multiple resolution levels, with the lowest resolution level's scheduling information sent on a multicast control channel (MCCH) and all resolution levels' data sent on a multicast traffic channel (MTCH), allowing UEs to select and receive only the necessary resolution level based on their screen size and usage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If all resolution levels of MBMS are broadcast to all UEs, then service coverage and compatibility are improved, but power consumption and data processing burden on UEs worsen

Engineering Contradiction:

Improveservice coverageVSAvoidpower consumption

Core Design Contradiction:

Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

The patent segments MBMS services into multiple resolution levels (e.g., first resolution level and second resolution level) and transmits them through separate logical channels (first MBMS service and second MBMS service). This allows UEs to selectively receive only the resolution level they need based on their screen size and usage requirements, thereby reducing power consumption while maintaining service coverage.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies local quality by tailoring the MBMS service quality to individual UE requirements. Each UE is provided with MBMS services customized to its capabilities (e.g., screen size, processing power) rather than a uniform service. The network determines appropriate resolution levels for each UE based on its characteristics, optimizing the balance between service quality and energy consumption.

Inventive Principle:

Principle #3Local quality

2Adaptability or versatility

If all resolution levels of MBMS are transmitted to all UEs, then service universality is improved, but unnecessary data processing and bandwidth utilization worsen

Engineering Contradiction:

Improveservice universalityVSAvoiddata volume

Core Design Contradiction:

Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

The patent divides the MBMS data into separate resolution levels and transmits them through distinct logical channels. This segmentation enables UEs to receive only the necessary resolution level based on their screen size and usage scenarios, reducing the quantity of data processed while maintaining universal service availability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies partial action by having UEs receive only the portion of MBMS service they actually need (e.g., low-resolution service for small screens, high-resolution service for large screens) rather than forcing all UEs to receive all resolution levels. This optimizes data volume while preserving service universality.

Inventive Principle:

Principle #16Partial or excessive action

3Adaptability or versatility

If the eNB broadcasts MBMS scheduling information on MCCH for all resolution levels, then scheduling flexibility is improved, but control channel overhead and processing complexity worsen

Engineering Contradiction:

Improvescheduling flexibilityVSAvoidprocessing complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent segments scheduling information into separate control channels for different resolution levels. The MCCH carries scheduling information for the first MBMS service (lower resolution), while the DCCH carries scheduling information for the second MBMS service (higher resolution). This segmentation reduces processing complexity by allowing UEs to only process scheduling information relevant to their required resolution level.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies partial action by having UEs process only the scheduling information necessary for their required resolution level. UEs with smaller screens or lower requirements only process MCCH scheduling information, while UEs requiring higher resolution process both MCCH and DCCH scheduling information, reducing overall processing complexity.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS8391200B2Method of multimedia broadcast multicast service content aware scheduling and receiving in a wireless communication system and related communication device

Publication Date: 2013.03.05 HTC CORP

AI summary

A method of MBMS content aware scheduling and receiving for a network of a wireless communication system includes receiving data of different resolutions generated from a data source from an MBMS content provider, wherein the received data is used for forming a plurality of MBMS services of different resolution levels, transmitting a plurality of dynamic scheduling information units corresponding to the plurality of MBMS services of different resolution levels formed with the received data except the MBMS service of the lowest resolution level, transmitting scheduling information of the MBMS services of the lowest resolution level on a multicast control channel, and transmitting the plurality of MBMS services of different resolution levels on a multicast traffic channel.