MCE Coordination for V2X MBMS Resource Allocation
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Solution Overview
Problem
Current wireless communication systems lack an efficient method for allocating multimedia broadcast multicast services (MBMS) based resources for vehicle-to-everything (V2X) message transmission, particularly in scenarios where vehicle UEs or roadside unit (RSU) UEs require dynamic resource allocation for V2X messages.
Innovation Solution
A method where a multi-cell/multicast coordination entity (MCE) receives requests for radio resources from eNBs supporting V2X functions or eNB type RSUs and transmits MBMS scheduling information to allocate resources efficiently for V2X message transmission, including configuration of physical multicast channels and MBSFN subframes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If MBMS based resources are allocated for V2X message transmission, then resource allocation efficiency is improved, but system complexity increases due to coordination between MCE, eNBs, and V2X entities
Solution Approach 1:
The patent introduces a Multicast Coordination Entity (MCE) as an intermediary to manage and coordinate MBMS resource allocation for V2X communications. The MCE receives resource requests from eNBs, determines appropriate MBMS resources, and distributes scheduling information back to eNBs. This intermediary approach centralizes the complexity of resource coordination while simplifying individual eNB operations, thereby improving overall resource allocation efficiency without excessively increasing system complexity.
Solution Approach 2:
The patent segments the V2X resource allocation process into distinct functional stages: resource request submission by eNBs, resource determination by MCE, and scheduling information distribution. This segmentation allows each component to focus on specific tasks, improving resource allocation efficiency through specialized processing while managing system complexity by distributing functions across multiple entities rather than concentrating all complexity in a single component.
2Loss of time
If dynamic resource allocation is implemented for V2X messages, then communication timeliness is improved, but resource management complexity increases
Solution Approach 1:
The patent implements dynamic resource allocation where the MCE receives real-time resource requests from eNBs based on actual V2X message transmission needs. The MCE dynamically determines appropriate MBMS resources and provides scheduling information accordingly, rather than using static pre-configured resources. This dynamic approach improves communication timeliness by adapting to real-time traffic conditions while managing complexity through centralized coordination that simplifies individual eNB decision-making.
Solution Approach 2:
The patent establishes a feedback mechanism where eNBs monitor V2X message transmission requirements and send resource requests to the MCE based on actual traffic demands. The MCE processes these feedback signals and adjusts resource allocation accordingly. This feedback-driven approach ensures communication timeliness by responding to actual needs while managing resource management complexity through structured information flow and centralized processing.
3Manufacturing precision
If MBMS scheduling information is transmitted to eNBs for V2X resources, then resource allocation accuracy is improved, but signaling overhead increases
Solution Approach 1:
The patent utilizes MBMS scheduling information parameters to precisely control resource allocation for V2X messages. The MCE determines and transmits specific scheduling parameters including resource block assignments, time-frequency allocations, and modulation schemes. These parameter changes enable accurate resource allocation matched to actual V2X traffic requirements. The signaling overhead is managed by transmitting only the necessary scheduling parameters rather than complete resource configurations, optimizing the balance between allocation accuracy and signaling efficiency.
Data Source
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AI summary
A method and apparatus for allocating resources for vehicle-to-everything (V2X) message transmission in a wireless communication system is provided. For the first solution, a pre-configuration based scheme is defined and specific temporary mobile group identities (TMGIs) are defined for the V2X service. For the second solution, a multi-cell/multicast coordination entity (MCE) receives a request for radio resource, which is based on an amount of V2X messages transmitted from vehicle user equipments (UEs) or road side unit (RSU) UEs, from an eNodB (eNB) supporting V2X function or an eNB type RSU, and transmits multimedia broadcast multicast services　(MBMS) scheduling information to the eNB supporting V2X function or an eNB type RSU as a response to the request for radio resource.