Random Access Connection Grouping for Cell-Free Wireless Access
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Solution Overview
Problem
Establishing efficient communication connections between terminal devices and wireless access devices in cell-free radio access networks is challenging due to the need for simultaneous service by multiple access points, leading to high signaling overhead and computational complexity.
Innovation Solution
A method involving a random access procedure for terminal devices to select and establish a communication connection with a first device group, utilizing different time-, frequency-, and code-domain resources to distinguish and connect with a subset of wireless access devices, reducing the need for simultaneous service by all access points.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a terminal device establishes communication connections with multiple wireless access devices simultaneously in a cell-free radio access network, then the network coverage and service reliability are improved, but the signaling overhead and computational complexity increase significantly
Solution Approach 1:
The patent segments the large set of wireless access devices into multiple device groups, where each group is managed by a separate network device. Terminal devices establish connections with only one device group at a time, dividing the complex multi-device connection problem into simpler group-level connections. This reduces the computational complexity for terminal devices while maintaining reliable communication through group-based service.
2Productivity
If a terminal device establishes communication connections with multiple wireless access devices simultaneously, then the network capacity and spectrum efficiency are improved, but the signaling overhead increases
Solution Approach 1:
The patent extracts the connection management function from individual terminal-device interactions to the network device level. Network devices manage connections for entire device groups, extracting and consolidating signaling operations. This reduces the signaling overhead for terminal devices while maintaining high network capacity through efficient group-based resource management and coordinated multi-device service.
3Adaptability or versatility
If terminal devices connect to a large number of wireless access devices, then the network scalability is improved, but the system complexity and resource consumption increase
Solution Approach 1:
The patent introduces a hierarchical dimension to the network architecture, organizing wireless access devices into device groups managed by network devices. This adds a management layer dimension that enables scalable network expansion without proportionally increasing system complexity. Terminal devices interact with groups rather than individual devices, reducing the complexity burden while maintaining scalability through hierarchical organization.
Data Source
AI summary
Provided is a method for establishing a communication connection, performed by a terminal device. The method includes: establishing a communication connection with a first device group via a random access procedure, wherein the first device group includes at least one wireless access device.