Wireless Infrastructure Equipment for Adaptive RACH Uplink Configurations
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Solution Overview
Problem
Future wireless communications networks face challenges in efficiently supporting a wide range of devices with varying data traffic profiles and types, including low complexity devices requiring infrequent communication of low bandwidth data, necessitating optimized resource allocation in random access procedures.
Innovation Solution
The implementation of infrastructure equipment that transmits and receives data using a hybrid, enhanced RACH procedure, where uplink data transmission configurations are adjusted based on the distance between devices and the infrastructure, optimizing resource allocation in both four-step and two-step RACH processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a wide range of devices with different traffic profiles are supported, then network versatility is improved, but resource allocation efficiency deteriorates
Solution Approach 1:
The patent applies local quality by providing different uplink data transmission configurations to different devices based on their specific characteristics and distances from the infrastructure equipment. Each device receives customized configuration parameters (modulation schemes, coding rates, transmission power) tailored to its local conditions, thereby maintaining high versatility while optimizing resource allocation efficiency for each device type.
Solution Approach 2:
The patent implements dynamics by enabling the infrastructure equipment to dynamically select and assign appropriate uplink data transmission configurations from multiple available configurations. The system can adaptively adjust transmission parameters based on real-time device distance, channel conditions, and traffic requirements, allowing the network to efficiently handle diverse device types without sacrificing resource allocation efficiency.
2Productivity
If random access procedures are optimized for low bandwidth devices, then communication efficiency for IoT devices is improved, but support for high bandwidth devices deteriorates
Solution Approach 1:
The patent applies segmentation by dividing the random access procedure into multiple configuration options with different parameter sets. Low bandwidth devices can utilize configurations optimized for their needs (lower modulation orders, simpler coding), while high bandwidth devices can be assigned configurations with higher performance parameters. This segmentation allows the system to optimize for specific device types without compromising overall network versatility.
3Reliability
If transmission parameters are adjusted based on device distance, then uplink reception quality is improved, but system complexity increases
Solution Approach 1:
The patent implements self-service by enabling devices to autonomously determine their distance from the infrastructure equipment and select the appropriate uplink data transmission configuration from the provided set. Devices can use their own location information to identify the configuration that best matches their conditions, reducing the need for complex network-side distance calculation and configuration assignment, thereby improving reception quality while limiting complexity growth.
Data Source
AI summary
An infrastructure equipment forming part of a wireless communications network for transmitting data to or receiving data from a plurality of communications devices is provided. The infrastructure equipment providing a cell having a coverage area in which the plurality of communications devices are located. The infrastructure equipment comprises circuitry configured to transmit signals to the communications devices via a wireless access interface provided by the wireless communications network, receive signals from the communications devices via the wireless access interface, transmit to the plurality of communications devices an indication of one or more of a plurality of uplink data transmission configurations, receive a first signal comprising a random access preamble and uplink data from one of the communications devices, and transmit a random access response message to the one of the communications devices.