Non-Coherent Antenna Access Method for Reducing Random Access Collisions
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Solution Overview
Problem
In wireless communication networks, especially in the 5G era and with the rise of IoT, random access conflicts increase due to the difficulty in predicting time distribution and the contradiction between access success rate and channel resource allocation, leading to limited scalability of access channel resources.
Innovation Solution
The method involves using non-coherent antennas to send access-associated signals and receive access requests, allowing access requests to be sent in specific Directions of Arrival, reducing collision probability and improving access success rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If more access channel resources are allocated to reduce random access conflicts, then access success rate and access speed improve, but resources of other channels (such as service channel) are sacrificed
Solution Approach 1:
The access channel resources are segmented into multiple non-coherent antenna resources, allowing terminals to select from multiple spatial paths. This segmentation enables the system to serve more terminals simultaneously without requiring proportional increases in overall channel resources, as each terminal can be routed through different antenna segments.
Solution Approach 2:
The patent introduces a spatial dimension by using multiple non-coherent antennas to transmit access-associated signals. Terminals determine Directions of Arrival and send access requests along specific spatial paths, effectively adding a spatial dimension to the access channel resource allocation, thereby increasing capacity without consuming additional frequency or time resources.
2Speed
If more access channel resources are allocated to improve access speed, then random access conflict reduction is achieved, but resource allocation flexibility decreases
Solution Approach 1:
The system dynamically adapts to different access scenarios by allowing terminals to flexibly select from multiple available non-coherent antenna resources based on current channel conditions and traffic patterns. This dynamic resource selection mechanism maintains high access speed while preserving allocation flexibility, as resources are assigned based on real-time needs rather than fixed allocation.
3Device complexity
If traditional single-antenna access methods are used, then system complexity is low, but random access conflicts increase in high-density terminal environments
Solution Approach 1:
Multiple non-coherent antennas are merged into a unified access system where terminals can select from multiple spatial paths. The antennas work together as a coordinated system, with the access point managing multiple antenna resources and terminals selecting appropriate paths, thereby reducing conflicts through spatial diversity while maintaining manageable system complexity through standardized protocols.
Data Source
AI summary
The embodiments of this application disclose an access method, an auxiliary access method, and apparatuses thereof. The access method comprises: receiving an access-associated signal from at least one path, wherein the access-associated signal is separately sent by an access point device by using at least two non-coherent antennas; and sending an access request in at least one Direction of Arrival of access-associated signals corresponding to some antennas of the at least two non-coherent antennas. According to the method and the apparatus in the embodiments of this application, an access request is sent in at least one Direction of Arrival of access-associated signals corresponding to some antennas of an access point device, which can reduce a probability of a collision between access terminals and improve an access success rate of an access terminal.