Wireless Base Station Random Access Preamble Prioritization
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Solution Overview
Problem
In wireless networks, especially in CBRS systems, congestion within customer premises and interference from increasing power levels of random access preamble signals hinder efficient access to wireless base stations, particularly for customer premises equipment devices serving multiple users, without prioritization of access based on device attributes.
Innovation Solution
A method where a wireless base station manages random access preamble signals by creating profiles for customer premises equipment devices based on attributes like location, software, hardware, and traffic patterns, and assigns dedicated random access preamble signatures to prioritize access, reducing interference and ensuring efficient network utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If user terminals increase transmission power level for random access preamble signals to improve access probability, then the chance of base station receiving the signal improves, but network interference increases significantly
Solution Approach 1:
The patent changes the parameter of random access preamble transmission by introducing dedicated preamble signatures with fixed power levels for specific device types (e.g., CPE devices), eliminating the need for power level increments and reducing interference while maintaining reliable access
Solution Approach 2:
The patent introduces an intermediary mechanism where the base station assigns dedicated random access preamble signatures to specific devices based on their type and service requirements, mediating between multiple users and preventing interference through structured allocation
2Power
If all user terminals transmit random access preamble signals concurrently at higher power levels, then individual devices may improve their signal strength, but overall network access capability deteriorates due to high interference
Solution Approach 1:
The base station performs preliminary action by pre-assigning dedicated random access preamble signatures to devices before they need to access the network, organizing transmission opportunities in advance and preventing concurrent high-power collisions
Solution Approach 2:
The patent applies local quality by providing different random access preamble configurations to different device types and locations, with CPE devices receiving dedicated signatures while mobile devices use conventional procedures, optimizing performance for each specific case
3Ease of operation
If conventional random access procedures are used without device prioritization, then all devices are treated equally, but critical devices such as CPE devices serving multiple users cannot obtain urgent access
Solution Approach 1:
The patent changes the access parameters by introducing device-type-specific random access preamble signatures and power levels, allowing CPE devices to use dedicated signatures with appropriate power settings that ensure reliable access while serving multiple users
Solution Approach 2:
The patent segments the random access procedure by device type, creating separate access pathways: dedicated random access preambles for CPE devices and conventional preambles for mobile devices, allowing prioritized handling of critical devices
Data Source
AI summary
The present invention relates to methods and apparatus for providing devices access to wireless base stations. An exemplary method embodiment includes the steps of: receiving over the air at a wireless base station a plurality of random access preamble signals from a plurality of devices; and determining, by the wireless base station, the order in which to respond to the received random access preamble signals based on an access priority list. The access priority list being determined based on customer premises equipment devices characteristics, attributes and/or properties.