Wireless Access Messaging With Fine-Grained Frequency Resources
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Solution Overview
Problem
Traditional anti-collision algorithms for zero-power devices cause excessive communication delay when accessing a large number of devices, leading to collisions and inefficiencies in scenarios like logistics warehousing management.
Innovation Solution
Implementing a method where a first device sends a message on a second frequency domain resource with finer granularity than the first, and adjusts transmission based on a received message, reducing collisions and communication delay.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If traditional anti-collision algorithms are used for zero-power devices, then access of a huge number of devices is achieved, but communication delay becomes excessive
Solution Approach 1:
The frequency domain resource is divided into multiple first frequency domain resources, each containing multiple second frequency domain resources. This hierarchical segmentation allows devices to access different frequency resources simultaneously, enabling a large number of devices to communicate in parallel and reducing overall communication delay while maintaining anti-collision capability.
Solution Approach 2:
The patent transitions from traditional single-dimensional resource allocation to multi-dimensional frequency domain resource allocation. By organizing resources into first frequency domain resources (coarse granularity) and second frequency domain resources (fine granularity), the system creates additional dimensions for device access, allowing simultaneous communications across multiple frequency dimensions and thereby reducing delay.
2Quantity of substance
If traditional anti-collision algorithms are used for zero-power devices, then device access is enabled, but data collision occurs
Solution Approach 1:
The frequency domain is segmented into multiple hierarchical levels (first frequency domain resources containing multiple second frequency domain resources). This segmentation provides multiple orthogonal channels for device communication, allowing simultaneous access without collision. Each device can be assigned to a unique combination of first and second frequency domain resources, eliminating data collision while supporting large numbers of devices.
Solution Approach 2:
The patent introduces multi-dimensional frequency domain allocation to resolve collisions. By organizing frequency resources into hierarchical structures with coarse and fine granularities, the system creates additional dimensions for distinguishing simultaneous transmissions. This multi-dimensional approach allows the system to accommodate many devices without collision by assigning unique frequency signatures across multiple dimensions.
3Loss of time
If fine granularity frequency domain resources are used, then communication delay is reduced, but resource allocation complexity increases
Solution Approach 1:
The frequency domain resource is segmented into a hierarchical structure with first frequency domain resources (coarse granularity) and second frequency domain resources (fine granularity). This segmentation allows the system to manage complexity by organizing resources in layers, where higher-level resources provide broad allocation and lower-level resources provide fine-grained access. This hierarchical organization reduces the complexity of managing fine-grained resources while still achieving low communication delay.
Solution Approach 2:
The patent uses multi-dimensional frequency domain organization to balance granularity and complexity. By creating a hierarchical structure with multiple levels of frequency resources, the system adds organizational dimensions that make complex resource management more tractable. The hierarchical arrangement allows efficient allocation strategies where devices can be assigned resources through a structured process rather than managing all fine-grained resources directly.
Data Source
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AI summary
Provided in the embodiments of the present application are a wireless communication method, a first device and a second device. The method comprises: sending, on at least one second frequency domain resource in at least one first frequency domain resource, a first message to a second device, wherein the first frequency domain resource comprises one or more second frequency domain resources; receiving a second message sent by the second device; and on the basis of the second message, stopping sending the first message, or retransmitting the first message. In the embodiments, the first device sends the first message on the second frequency domain resource, which has a finer resource granularity than the first frequency domain resource, and stops sending or retransmits the first message on the basis of the received second message, such that compared with a solution of directly sending the first message on the first frequency domain resource, the method of the present application can not only achieve access of a huge quantity of first devices or information reporting of the first device, but also reduce communication time delay between the first device and the second device.