UE Grant Size Comparison for Wireless Collision Avoidance
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Solution Overview
Problem
In wireless communications networks, especially in the context of New Radio (NR), there is a challenge in efficiently handling small data transmissions in the RRC_INACTIVE state, where collisions between UE transmissions can occur due to shared RNTIs, leading to inefficient resource allocation and potential data loss.
Innovation Solution
A method is introduced where User Equipment (UE) and radio network nodes configure and compare grant sizes and types for data transmissions, allowing UEs to determine if received grants are intended for them, thereby avoiding collisions by selecting appropriate resources and ensuring accurate grant usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If separate RACH configurations are used for different data transmission types, then resource allocation efficiency is improved, but collision risks increase due to shared RNTIs
Solution Approach 1:
The patent segments the random access channel into different configurations for different data transmission types (e.g., small data transmissions vs. other transmissions). By configuring separate RACH parameters and procedures for different transmission types, the system can allocate resources more efficiently while reducing collisions. The UE determines the appropriate RACH configuration based on the data transmission type, allowing targeted resource allocation without interference from other transmission types.
Solution Approach 2:
The patent applies local quality by tailoring specific RACH configuration parameters to different data transmission types. Different transmission types receive customized configuration settings (such as different message formats, timing parameters, or resource allocation patterns) optimized for their specific characteristics. This allows the system to optimize resource allocation efficiency for each transmission type while maintaining reliability through type-specific collision avoidance mechanisms.
2Speed
If grant sizes are not compared and verified, then transmission speed is maintained, but resource utilization efficiency decreases
Solution Approach 1:
The patent implements a feedback mechanism where the UE compares the received grant size against the expected grant size based on the data transmission type and configured parameters. This feedback loop allows the UE to verify whether the granted resources are appropriate for the intended transmission. When the grant size matches the expected size, the UE proceeds with transmission, ensuring efficient resource utilization. This feedback mechanism maintains transmission speed by avoiding unnecessary delays while optimizing resource usage through verification.
Data Source
AI summary
A method performed by a user equipment (UE) for handling communication in a wireless communications network is described. The UE obtains an indication of a first size of a grant for a first type of data transmission and transmits an access request to a radio network node to perform data transmission of the first type of data transmission. Then the UE receives a grant from the radio network node. The grant indicates a size for granted data transmission, or comprises a type indication of type of data transmission of the granted data transmission. The UE compares the first size with the indicated size in the grant, or the first type of data transmission and the type of data transmission indicated by the type indication in the received grant and based on the comparison, determines whether to use the received grant for performing data transmissions or not.