V2X Layer-2 Address Pair Frequency Band Mapping
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Solution Overview
Problem
In V2X communications systems, different types of V2X services are allocated to different frequency bands, but they are often filtered into the same QoS flow, leading to incorrect frequency band transmission and impaired service quality.
Innovation Solution
A method where the transmit end determines a unique layer-2 address pair for each V2X service based on its frequency band, ensuring data is sent on the correct frequency band, preventing mixing of services across different bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If different types of V2X services are allocated to different frequency bands, then service diversity and frequency band utilization are improved, but transmission reliability deteriorates when services are filtered into the same QoS flow
Solution Approach 1:
The patent segments the QoS flow by introducing frequency band identification information. Services on different frequency bands are no longer mixed in a single QoS flow but are segmented into separate flows with distinct frequency band identifiers, ensuring that each service maintains its correct frequency band association throughout transmission.
Solution Approach 2:
The patent introduces frequency band identification information as an intermediary element between the service data and the QoS flow. This identifier acts as a mediator that links the service to its designated frequency band, enabling the network to correctly route and transmit services on the appropriate frequency bands without confusion.
2Device complexity
If V2X services are filtered into a same QoS flow for simplified processing, then device complexity is reduced, but frequency band identification capability is lost
Solution Approach 1:
The patent applies preliminary action by embedding frequency band identification information into the QoS flow during the service filtering and routing process. This pre-association of frequency band identifiers with service data ensures that frequency band information is preserved throughout the transmission chain without requiring complex post-processing or re-identification mechanisms.
Data Source
AI summary
A communication method and a communications apparatus to transmit data of V2X services on appropriate frequency bands, where the method includes: A transmit end determining a layer-2 address pair of a first V2X service based on a frequency band of the first V2X service, where the layer-2 address pair of the first V2X service includes a source layer-2 address of the first V2X service and a destination layer-2 address of the first V2X service, and where the layer-2 address pair of the first V2X service corresponds to the frequency band of the first V2X service; and the transmit end sending data of the first V2X service to a receive end on the frequency band of the first V2X service based on the layer-2 address pair of the first V2X service.