Dynamic Backhaul Subframe Configuration for Relay Nodes
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Solution Overview
Problem
Conventional centralized cellular radio networks face challenges in flexibility and efficiency due to fixed base station positions, making it difficult to adapt to rapid changes in traffic distribution and call demands, especially with extended service frequency ranges and reduced cell radii, which can lead to suboptimal resource allocation in backhaul links.
Innovation Solution
A method and apparatus for configuring a backhaul subframe in a relay communication system, where configuration information about the backhaul subframe, including symbol positions and sizes, is transmitted to a relay node, allowing dynamic adjustment of backhaul signal allocation based on communication environments, thereby optimizing resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If fixed base station positions are used in conventional centralized cellular radio networks, then infrastructure stability is improved, but flexibility of radio link configuration deteriorates
Solution Approach 1:
The patent introduces dynamic backhaul subframe configuration where the number of symbols allocated for backhaul signals can be adjusted based on propagation delay conditions. The system transitions from static resource allocation to dynamic allocation, allowing the backhaul link to adapt to changing communication environments while maintaining overall network stability through controlled parameter adjustments.
2Reliability
If backhaul signal transmission is designed considering propagation delay, then communication reliability in varying environments is improved, but resource allocation efficiency deteriorates
Solution Approach 1:
The patent changes the parameter of backhaul subframe configuration dynamically based on propagation delay conditions. When propagation delay is large, more symbols are allocated to backhaul signals; when propagation delay is small, fewer symbols are allocated. This parameter adjustment resolves the contradiction by adapting resource allocation to actual communication conditions, maintaining reliability while improving efficiency.
3Reliability
If more symbols are allocated to backhaul signals in environments with long propagation delay, then backhaul communication reliability is improved, but available resources for other communications deteriorate
Solution Approach 1:
The system dynamically adjusts the number of symbols allocated to backhaul signals based on actual propagation delay conditions rather than allocating fixed resources. This dynamic allocation ensures that resources are increased for backhaul communication only when necessary (long propagation delay), and released when not needed (short propagation delay), resolving the contradiction between reliability and resource availability.
Data Source
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AI summary
The present invention relates to a data transmission/receiving method and apparatus in a relay communication system. In particular, the data transmission/receiving method through a backhaul link between a base station and a relay node in a relay communication system comprises: composing a backhaul subframe including a control signal transmission period to which a control signal is allocated and a backhaul signal transmission period to which a backhaul signal is allocated and then allocating the backhaul signal; transmitting configuration information about the backhaul subframe, the information containing symbol position or size data of the backhaul signal transmission period, to the relay node through an upper layer signal; and transmitting the backhaul signal having been allocated through the backhaul subframe to the relay node.