Dynamic Time Domain Resource Allocation in Wireless Backhaul Links
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Solution Overview
Problem
In LTE systems, the slow configuration speed of higher layer signaling for time domain resources in backhaul and access links leads to an inability to resolve transmission bottlenecks in a timely manner, resulting in inflexible resource allocation.
Innovation Solution
A method is introduced where a first device sends indication information to a second device to dynamically and flexibly allocate time domain resources for backhaul or access links, allowing for resource allocation between the (n+k0)th and (n+k1)th time units, enabling timely resolution of transmission bottlenecks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If higher layer signaling is used to configure time domain resources for backhaul and access links, then resource allocation can be performed, but the configuration speed is slow and cannot resolve transmission bottlenecks in time
Solution Approach 1:
The patent segments the resource configuration into two parts: semi-static configuration through higher layer signaling for basic resource allocation, and dynamic adjustment through physical downlink control channel (PDCCH) indications for real-time bottleneck resolution. This segmentation allows both slow but reliable base configuration and fast but flexible dynamic adjustment to coexist
Solution Approach 2:
The patent introduces dynamic resource indication through PDCCH that can override or supplement the semi-static higher layer configuration. The network can dynamically indicate alternative time domain resources for backhaul or access links when bottlenecks occur, making the resource allocation adaptive and responsive to changing network conditions
2Adaptability or versatility
If higher layer signaling is used to configure time domain resources, then resource allocation can be performed, but resource allocation flexibility is poor
Solution Approach 1:
The patent uses higher layer signaling to pre-configure multiple candidate time domain resource sets for backhaul and access links before bottlenecks occur. When bottlenecks are detected, the network can quickly indicate which pre-configured resource set to use via PDCCH, avoiding the need for slow reconfiguration while maintaining flexibility
Solution Approach 2:
The system dynamically selects from pre-configured resource sets based on real-time network conditions. The PDCCH carries dynamic indications that allow the network to switch between different resource configurations rapidly, achieving both flexibility and fast response time
Data Source
AI summary
This application describes a resource indication method and a communications device. A resource indication method may include sending, by a first device, first indication information to a second device in an nth time unit, where the first indication information indicate a first time domain resource of a first link or a second link in an (n+k0)th time unit to an (n+k1)th time unit. In the method, the first link is a link between the first device and the second device, the second link is a link between the second device and a third device, k0 is an integer greater than or equal to 0 and less than or equal to k1, and k1 is an integer.