Backhaul Subframe Relay Control Channel Configuration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing wireless communication systems, particularly in LTE and LTE-Advanced, face challenges in efficiently managing backhaul subframe channel transmission and reception, leading to scheduling restrictions and resource wastage due to the conventional control channel configuration, which limits the dynamic allocation of resources for relay transmissions.
Innovation Solution
The proposed method optimizes the control channel configuration by separating downlink and uplink relay control information into distinct semi-static resource regions within the backhaul subframe, allowing for dynamic resource allocation and minimizing overhead, where primary information indicates the start position of secondary information, enabling efficient transmission and reception of relay control channels and data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional control channel configuration is used for backhaul subframe transmission, then transmission reliability is maintained, but scheduling flexibility is restricted and resource wastage occurs
Solution Approach 1:
The control information is segmented into two parts: first control information transmitted in a first slot of the backhaul subframe, and second control information transmitted in a second slot. This segmentation allows the receiver to process control information progressively, enabling more flexible scheduling and reducing resource wastage by allowing dynamic allocation based on actual needs.
Solution Approach 2:
The system implements dynamic resource allocation for backhaul subframes by allowing the control information to be distributed across different slots rather than requiring a fixed configuration. This dynamic approach enables the system to adapt to varying traffic conditions and improve scheduling flexibility while reducing resource wastage.
2Adaptability or versatility
If control information is transmitted in a single slot, then transmission complexity is reduced, but resource allocation flexibility is limited
Solution Approach 1:
Control information is divided into first control information (transmitted in first slot) and second control information (transmitted in second slot). This segmentation enables flexible resource allocation across different time slots while maintaining manageable complexity at each transmission point, as each slot handles a specific portion of the control information.
Solution Approach 2:
The control information transmission is extended from a single time slot to multiple time slots (first slot and second slot), adding a temporal dimension to the resource allocation. This multi-slot approach increases resource allocation flexibility without significantly increasing the complexity of individual transmission operations.
3Productivity
If semi-static resource regions are used for control information, then overhead is minimized, but dynamic resource allocation is restricted
Solution Approach 1:
The resource allocation is segmented into semi-static resource regions for control information and dynamic resource regions for data transmission. The first control information is transmitted in the first slot using semi-static allocation, while the second control information and data can be dynamically allocated in the second slot, achieving both overhead minimization and dynamic allocation.
Solution Approach 2:
The system combines semi-static resource allocation for control information with dynamic resource allocation for data transmission. By transmitting control information in dedicated semi-static regions and allowing dynamic allocation in other regions, the system achieves efficient resource utilization while maintaining adaptability for dynamic resource allocation.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present invention relates to a method for transmitting a backhaul sub frame channel of a base station in a wireless communication system. The method for transmitting a backhaul sub frame channel according to one embodiment of the present invention comprises: creating a downlink relay control channel by coding downlink relay control information that is transmitted to a relay; allocating the created downlink relay control channel to a first slot of a semi-static resource region that is allocated to the relay; and transmitting, to the relay, a backhaul sub frame to which the channel is allocated. Compared to existing control channel transmission techniques, the present invention can minimize overheads. Moreover, the present invention also reduces control channel resources required during retransmission and for the transmission of multiple backhaul subframes.