Access Link Radio Resource Preallocation for Priority Services
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Solution Overview
Problem
In wireless communication networks, latency occurs when a second node lacks available resources to forward data intended for a third node, leading to inefficiencies in data transmission.
Innovation Solution
A first access node determines data corresponds to a priority service and assigns radio resources to a second access node, sending downlink resource information to facilitate data transmission, while preempting other transmissions to reduce collisions and increase reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If a second node forwards data from a first node to a third node using conventional resource allocation, then data transmission can occur, but latency increases when resources are not available
Solution Approach 1:
The first access node performs preliminary resource allocation by assigning radio resources to the second access node before data transmission occurs. This is achieved through sending downlink resource information that includes resource assignments, allowing the second node to have resources ready in advance, thus reducing latency while maintaining reliability for priority services
2Productivity
If radio resources are allocated dynamically through requests, then resource utilization is optimized, but transmission latency increases due to request-response overhead
Solution Approach 1:
Instead of waiting for resource requests, the first access node proactively assigns radio resources to the second access node in advance by including downlink resource information in transmissions. This eliminates the request-response overhead while maintaining efficient resource utilization through centralized control
Solution Approach 2:
The first access node acts as an intermediary that manages resource allocation for the second access node. By sending downlink resource information that includes resource assignments, the first node mediates the resource allocation process, eliminating the need for the second node to independently request resources and reducing transmission latency
3Productivity
If multiple nodes transmit using shared radio resources, then network capacity is maximized, but collisions increase reducing transmission reliability
Solution Approach 1:
The first access node applies local quality control by assigning specific radio resources to the second access node for particular data transmissions. This localized resource allocation ensures that priority service data receives dedicated resources, reducing collisions and improving transmission reliability without compromising overall network capacity
Data Source
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Figure 2A~2B
Figure 3
AI summary
Wireless communication techniques for priority services are described. An access node may transmit, to another access node, data corresponding to a wireless device. The access node may transmit the data along with downlink resource information indicating a radio resource. The other access node may use the radio resource to transmit the data to the wireless device. The access node may transmit one or more preemption indications to one or more other communication devices to preempt any other transmissions in the radio resource.