Logical Channel Resource Determination in V2X Multi-Carrier Systems
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Solution Overview
Problem
In the context of Vehicle-to-Everything (V2X) systems, particularly in the multi-carrier scenario of Rel-15, there is a challenge in selecting an appropriate carrier and Transmission Time Interval (TTI) for data transmission in logical channels, which is not adequately addressed by existing technologies.
Innovation Solution
A method and device that determine resource attributes for logical channels by receiving configuration information from the network side, establishing mapping relationships between data packet information and resource attributes like TTI or carrier, and using these relationships to identify the necessary resource attributes for efficient data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If a terminal determines transmission resource in sensing and reservation combined mode (mode 4), then transmission delay is reduced and spectral efficiency is improved, but resource selection complexity increases in multi-carrier scenario
Solution Approach 1:
The patent segments the resource selection process into distinct mapping relationships: first mapping logical channel priority to PPPP values, then mapping PPPP values to specific carriers and TTIs. This segmentation simplifies the overall complexity by breaking down the multi-carrier resource selection into manageable mapping steps rather than requiring complex simultaneous optimization across all carriers.
Solution Approach 2:
The patent changes the parameter mapping approach by introducing PPPP (ProSe Per Packet Priority) as an intermediate parameter that bridges logical channel priority and physical resource selection. This parameter transformation enables systematic resource allocation across multiple carriers by converting abstract priority levels into concrete resource attributes (carrier index, TTI) through predefined mapping tables.
2Productivity
If a terminal transmits and receives data on multiple carriers simultaneously (multi-carrier scenario), then spectral efficiency is improved, but difficulty in selecting appropriate carrier and TTI for logical channel data increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring mapping relationships between logical channel priorities, PPPP values, carriers, and TTIs before actual data transmission. The network side provides configuration information containing mapping tables that define which carriers and TTIs correspond to which PPPP values. This preliminary setup eliminates the need for complex real-time decision-making during transmission, as the terminal simply follows the pre-established mappings.
Solution Approach 2:
The patent introduces PPPP (ProSe Per Packet Priority) as an intermediary parameter that mediates between logical channel priority and physical resource selection. This intermediary layer simplifies the selection process by providing a clear mapping hierarchy: logical channel priority → PPPP value → carrier and TTI selection. The intermediary PPPP parameter acts as a bridge that translates abstract priority concepts into concrete resource allocation decisions across multiple carriers.
Data Source
AI summary
Disclosed in the present invention are a method and device for determining a resource of a logical channel, and a computer storage medium. The method comprises: a terminal receives configuration information sent by a network side, the configuration information being provided with a first mapping relationship between association information of a data packet and at least one of the following resource attributes: a TTI and a carrier, the terminal determines a second mapping relationship between the logical channel and the association information of the data packet and determines, on the basis of the first mapping relationship and the second mapping relationship, at least one of the following resource attributes corresponding to the logical channel: the TTI and the carrier.