Relay Beam Scheduling With Time Offsets for On-Demand Transmission
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Solution Overview
Problem
Existing mobile communication systems face challenges in efficiently managing relay device-assisted communication to improve network coverage and cell edge throughput, particularly in controlling relay transmission resources.
Innovation Solution
A method involving a network device configuring a candidate resource set with L time offsets and N relay beams for a relay device, followed by indicating specific resources for signal relay transmission, allowing the relay device to perform on-demand signal forwarding using radio resource control (RRC) or downlink control information (DCI) messages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If relay device performs relay transmission using pre-configured candidate resources, then resource utilization is improved, but transmission flexibility is reduced
Solution Approach 1:
The patent implements dynamic activation of relay transmission through trigger information. The relay device transitions from a static pre-configured state to a dynamic activated state based on real-time network conditions. The trigger information mechanism allows the system to adaptively activate or deactivate relay transmission, balancing resource utilization with transmission flexibility according to actual communication needs.
Solution Approach 2:
The patent segments the relay transmission configuration into distinct components: candidate resource set configuration (static) and trigger information (dynamic). This segmentation allows the system to maintain pre-configured resources for efficiency while using separate trigger signals for flexible activation, resolving the contradiction between resource utilization and transmission flexibility.
2Reliability
If relay transmission is activated continuously to improve coverage, then network coverage is improved, but resource waste increases
Solution Approach 1:
The patent implements periodic or on-demand activation of relay transmission based on trigger information rather than continuous operation. The relay device monitors network conditions and activates relay transmission periodically or only when needed, as indicated by trigger information from the network device. This periodic action maintains network coverage reliability while avoiding continuous resource consumption and waste.
3Productivity
If multiple relay beams and time resources are configured to improve throughput, then cell edge throughput is improved, but device complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring the candidate resource set including multiple relay beams and time resources before actual transmission occurs. The network device prepares and sends configuration information containing multiple beams and time offsets in advance, allowing the relay device to have ready multiple transmission options. This preliminary configuration enables high throughput capability while simplifying real-time control decisions during actual transmission.
Data Source
AI summary
This application provides a relay transmission method, a communication apparatus, and a communication system. The method includes: A network device sends first information to a relay device. The first information is used to configure L time offsets and N relay beams. The network device sends second information to the relay device. The second information indicates L relay beams in the N relay beams and T pieces of time resource information that correspond to the L time offsets, and T≤L. The relay device determines L time resources in L time units based on the L time offsets and the T pieces of time resource information. The relay device forwards a signal from the network device or a signal from a terminal device via the L relay beams and the L time resources. This can implement relay transmission of the signal on demand, and improve resource utilization.