CoMP Transmission Control via Access Node Data Buffering
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Solution Overview
Problem
In wireless telecommunications networks, traditional CoMP systems face inefficiencies due to convoluted data forwarding between access nodes and relay nodes, which consumes spectrum resources and degrades performance.
Innovation Solution
The solution involves splitting master control functions between access nodes and relay nodes, with the access node acting as the master controller and the relay node as the serving node, and implementing techniques to prevent convoluted data forwarding by retaining copies of data packets at the access node for CoMP transmissions, thereby optimizing backhaul efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data packets are forwarded between access nodes and relay nodes in traditional CoMP systems, then coordinated transmission can be achieved, but convoluted data forwarding consumes spectrum resources and degrades performance
Solution Approach 1:
The patent extracts the data packet copying function from the relay node and places it at the access node. The access node retains copies of data packets in its buffer, eliminating the need for the relay node to request and receive data packets from the access node, thus removing the convoluted forwarding loop and reducing spectrum resource consumption.
Solution Approach 2:
The access node performs preliminary action by retaining copies of data packets in its buffer before the CoMP transmission occurs. This preliminary buffering eliminates the need for subsequent data requests and forwarding between nodes during the transmission process, preventing the convoluted forwarding problem.
2Productivity
If relay nodes request data packets from access nodes for CoMP transmission, then data can be delivered to user equipment, but backhaul efficiency is reduced due to unnecessary data forwarding
Solution Approach 1:
The patent removes the inefficient data request and forwarding process from the CoMP transmission workflow. By retaining data packet copies at the access node, the system eliminates the backhaul communication steps where relay nodes would request and receive data packets, thus improving backhaul efficiency.
Solution Approach 2:
The access node creates and retains copies of data packets in its buffer for potential CoMP transmissions. These copies are available immediately when needed, eliminating the need for real-time data requests and forwarding over the backhaul, thus improving efficiency without affecting data delivery capability.
3Device complexity
If master control functions are centralized at access nodes, then coordination is simplified, but relay nodes need efficient mechanisms to indicate CoMP participation
Solution Approach 1:
The patent introduces a signaling mechanism as an intermediary between relay nodes and access nodes. The relay node sends a signal to the access node to indicate its desire to participate in CoMP transmission, and the access node responds with appropriate instructions. This signaling intermediary simplifies the overall control architecture while maintaining ease of operation for relay nodes.
Data Source
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AI summary
A method is provided for communication in a wireless telecommunications system. The method comprises an access node acting as a master control but not acting as a serving node in a coordinated multi-point (CoMP) transmission with a relay node toward a user equipment. The method further comprises the access node retaining a copy of data packets that the access node sends to the relay node for the CoMP transmission.