Wireless Carrier Parameter Sharing for Signaling Overhead Reduction
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Solution Overview
Problem
Current wireless communication methods in Release 14 require separate transmission parameters for Uu and PC5 carriers, leading to resource wastage and excessive signaling overhead, which cannot meet the data transmission requirements for Release 15 and subsequent releases.
Innovation Solution
A method where a terminal device transmits data on the PC5 carrier using transmission parameters corresponding to the Uu carrier system, determined by configuration information indicating the correspondence between the two carrier types, thereby reducing resource usage and signaling overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate transmission parameters are configured for Uu carrier and PC5 carrier, then transmission reliability is improved, but signaling overhead increases and resources are wasted
Solution Approach 1:
The patent applies universality by enabling transmission parameters configured for the Uu carrier to be reused for the PC5 carrier. Instead of maintaining separate parameter sets for both carriers, the system allows the same transmission parameters (such as bandwidth, subcarrier spacing, cyclic prefix configuration) to serve multiple functions across different carrier types, thereby reducing signaling overhead while maintaining transmission reliability through appropriate parameter selection.
Solution Approach 2:
The patent merges the parameter configuration processes for Uu and PC5 carriers by allowing the PC5 carrier to inherit or share transmission parameters from the Uu carrier. This consolidation eliminates redundant configuration signaling and reduces the overall parameter set that needs to be managed, directly addressing the signaling overhead problem while preserving necessary transmission characteristics.
2Adaptability or versatility
If separate transmission parameters are configured for Uu carrier and PC5 carrier, then carrier-specific optimization is improved, but resource efficiency deteriorates
Solution Approach 1:
By making transmission parameters universal across Uu and PC5 carriers, the system improves resource efficiency. The same parameter configuration can be applied to both carriers, eliminating the need for separate resource allocations and reducing overall system resource consumption while still allowing carrier-specific adaptations when necessary through selective parameter inheritance.
3Adaptability or versatility
If independent transmission parameters are used for each carrier, then transmission flexibility is improved, but system complexity increases
Solution Approach 1:
The patent reduces system complexity by merging the parameter management architecture for Uu and PC5 carriers. Instead of maintaining independent parameter sets and configuration mechanisms for each carrier, the system combines them through a unified parameter configuration approach where PC5 parameters can be derived from or shared with Uu parameters, thereby simplifying the overall system architecture while preserving transmission flexibility through selective customization.
Data Source
AI summary
Embodiments of the present application provide a wireless communication method, a terminal device and a network device. The terminal device transmits data on a second type carrier according to a transmission parameter corresponding to a first carrier system, thereby saving resources and reducing signaling overhead. The method is applied to device to device communication, and the method includes: the terminal device determines, according to configuration information, to transmit data on at least one second type carrier according to the transmission parameter corresponding to at least one first type carrier system, and the configuration information indicates a correspondence between the at least one second type carrier and the at least one first type carrier system, the first type carrier is configured to transmit the transmission parameter over downlink, and the second type carrier is configured to transmit data over sidelink.