Random Access Spatial Filter Adaptation for Coverage
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current mobile communication networks face challenges in efficiently managing random access procedures across various wireless devices and base stations, particularly in heterogeneous networks with diverse technologies and capabilities, leading to suboptimal performance and resource utilization.
Innovation Solution
The implementation of advanced random access protocols and beam management techniques, including contention-based and contention-free procedures, optimized for Next-Generation Radio (NR) networks, which involve sophisticated message structures and resource allocation strategies to enhance communication efficiency and adaptability across different device categories and network configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional random access procedures are used in heterogeneous networks, then device compatibility is maintained, but network efficiency and resource utilization deteriorate
Solution Approach 1:
The patent implements dynamic random access procedures where the network can selectively apply different access methods (contention-based, contention-free, 2-step, 4-step) based on current network conditions, device capabilities, and traffic patterns. This dynamic adaptation allows the system to optimize for efficiency when conditions permit while maintaining compatibility when dealing with diverse device types and network states.
Solution Approach 2:
The patent modifies key parameters of the random access procedure including message structures ( Msg1, Msg2, Msg3, Msg4), timing configurations, resource allocation parameters, and procedure selection criteria. These parameter changes enable the system to achieve improved efficiency through optimized message exchanges and resource usage while maintaining backward compatibility with existing devices through configurable parameter sets.
2Productivity
If advanced random access protocols are implemented, then resource utilization improves, but system complexity increases
Solution Approach 1:
The patent segments the random access procedure into distinct phases and message types (Msg1 preamble transmission, Msg2 random access response, Msg3 uplink data, Msg4 contention resolution). Each segment can be independently optimized and managed. This segmentation allows the system to implement advanced protocols with improved resource utilization while managing complexity through modular, step-by-step procedure execution that can be selectively applied based on network conditions.
3Ease of operation
If contention-based procedures are used, then device autonomy is maintained, but access delay increases
Solution Approach 1:
The patent implements preliminary actions by providing devices with pre-configured uplink resources and grant information during the Msg2 random access response phase. This preliminary allocation of resources and timing information allows devices to proceed with uplink transmission without extensive contention resolution delays, thereby reducing access delay while maintaining a degree of device autonomy through the initial contention-based preamble selection.
Data Source
AI summary
A wireless device transmits a preamble based on a first spatial filter. The wireless device receives an uplink grant indicating transport block (TB) repetitions and a reference signal (RS). The wireless device transmits, based on the first spatial filter, first repetitions of the TB repetitions. The wireless device transmits, based on a second spatial filter associated with the RS, second repetitions of the TB repetitions.