PSFCH Capability Indication for Sidelink Feedback Efficiency
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing physical sidelink feedback channel (PSFCH) communications, particularly in configuring the number of resource block (RB) sets and PSFCH-carrying RBs without exceeding user equipment (UE) capabilities, leading to reduced efficiency and reliability of sidelink communications.
Innovation Solution
A method where user equipment (UE) transmits capability information indicating the number of RB sets and the maximum number of PSFCH communications supported, associated with a configured number of PSFCH-carrying RBs, and adjusts PSFCH feedback transmission or reception accordingly to optimize sidelink communication efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the number of RB sets and PSFCH-carrying RBs is increased to improve sidelink communication capacity, then the quantity of PSFCH communications is improved, but the device complexity and UE capability limits are exceeded
Solution Approach 1:
The patent implements dynamic capability indication where the UE reports its maximum PSFCH communication capacity through capability information messages. The network dynamically configures the number of RB sets and PSFCH-carrying RBs based on the UE's reported capability, allowing the system to adapt the quantity of PSFCH communications to match actual device capabilities without exceeding them.
Solution Approach 2:
The patent changes the parameter of PSFCH configuration by introducing capability indication parameters that specify the maximum number of PSFCH communications a UE can handle. The network uses these parameters to adjust the configuration of RB sets and PSFCH-carrying RBs, transforming the static resource allocation into a dynamic parameter-adjustment system that resolves the contradiction between quantity and capability.
2Productivity
If the number of RB sets is increased to support more PSFCH communications, then the productivity of sidelink feedback is improved, but the loss of time due to configuration complexity increases
Solution Approach 1:
The patent applies preliminary action by having the UE report its capability information in advance before actual PSFCH configuration occurs. The network receives and processes this capability indication beforehand, allowing it to pre-determine the appropriate number of RB sets and PSFCH-carrying RBs. This preliminary capability reporting eliminates the need for trial-and-error configuration, reducing the time loss associated with complex configuration adjustments.
3Reliability
If the maximum number of PSFCH communications is increased beyond UE capability, then the reliability of sidelink feedback is improved, but the system exceeds device limits causing communication failures
Solution Approach 1:
The patent implements a feedback mechanism where the UE reports its maximum PSFCH communication capability to the network. The network uses this feedback information to configure an appropriate number of RB sets and PSFCH-carrying RBs that matches the UE's actual processing capacity. This feedback loop ensures that the system configures PSFCH resources within reliable device limits, preventing communication failures while maximizing feedback reliability.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit capability information indicating at least one of: a number of resource block (RB) sets that can be occupied by physical sidelink feedback channel (PSFCH) communications of the UE, or a maximum number of PSFCH communications supported by the UE, wherein the maximum number of PSFCH communications is associated with a configured number of PSFCH-carrying RBs. The UE may transmit or receive PSFCH feedback in accordance with at least one of the configured number of PSFCH-carrying RBs or the number of RB sets. Numerous other aspects are described.