An adaptive channel access method

By using an adaptive channel access method, dynamically adjusting the energy detection threshold and backoff window, and combining it with an LSTM model to predict collisions, the channel collision and resource waste problems of the traditional LBT mechanism in the face of differentiated service requirements are solved, achieving efficient spectrum utilization and low-latency communication.

CN120264481BActive Publication Date: 2026-08-28BEIJING SMARTCHIP MICROELECTRONICS TECHNOLOGY CO LTD +1
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Patent Information

Application Number
CN202510570851.8
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-05-06
Publication Date
2026-08-28
Estimated Expiration
2045-05-06

AI Technical Summary

Technical Problem

Traditional LBT mechanisms cannot effectively distinguish service priorities when faced with differentiated service demands, resulting in excessively long waiting times for high-priority services or redundant competition for low-priority services. Furthermore, severe cross-protocol interference leads to channel conflicts and resource waste.

Method used

An adaptive channel access method is adopted, which identifies service types by monitoring channel energy and service labels, dynamically adjusts the energy detection threshold and backoff window, and combines an LSTM model to predict the collision probability, thereby optimizing the channel access strategy and avoiding unnecessary competition and collisions.

Benefits of technology

It improves spectrum utilization, reduces collision rate and latency, ensures rapid access for high-priority services, and enhances communication stability in heterogeneous network environments.

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Abstract

The application discloses a kind of self-adapting channel access methods, specifically including the following steps: step 1, listening stage: the channel energy of unlicensed frequency band and service label are monitored, current service type is identified and service priority weight is distributed;Step 2, decision stage: calculate the preemption factor by dynamic energy detection threshold, judge whether to trigger channel preemption based on preemption factor;Step 3, access stage: after preemption succeeds, avoid conflict with other protocol signals by pre-distributing time slot code, and send data;Step 4, conflict prediction and backoff adjustment stage: predict the conflict probability based on LSTM model, carry out adaptive backoff window adjustment, and handle abnormal conditions according to abnormal handling mechanism.The application can make high-priority service preoccupy channel more quickly, while avoiding low-priority service to carry out invalid competition when channel quality is poor, improve spectrum utilization, while reducing conflict rate and delay.
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