Direct Communication Resource Allocation in Wireless Systems
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Solution Overview
Problem
In LTE wireless communication systems, direct communication between user equipment (UE) devices is not defined, leading to unnecessary data forwarding through the network, which wastes overhead resources.
Innovation Solution
A method and apparatus for direct communication in a wireless communication system, where resource allocation configurations are generated and sent to allow UE devices to transmit and receive data using identical resources, eliminating the need for network-mediated forwarding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data is transmitted through the network (network-mediated forwarding), then communication can be established between UE devices, but overhead resources are wasted and energy consumption increases
Solution Approach 1:
The patent extracts the data transmission path from the network infrastructure and establishes a direct peer-to-peer connection between UE devices. The network is taken out of the data forwarding chain, eliminating unnecessary reception and transmission operations at network nodes, thereby reducing energy consumption and overhead resources while maintaining communication reliability.
2Reliability
If data is transmitted through the network (network-mediated forwarding), then communication can be established between UE devices, but overhead resources are wasted
Solution Approach 1:
The patent removes the network forwarding function from the data transmission path, extracting only the necessary control plane functions while allowing user plane data to flow directly between UEs. This eliminates redundant overhead resources associated with network-mediated forwarding, including unnecessary protocol processing and resource allocation at network nodes.
3Loss of energy
If direct communication between UE devices is implemented, then energy consumption and overhead are reduced, but resource allocation complexity increases
Solution Approach 1:
The patent introduces the network as an intermediary for resource allocation management, even though data flows directly between UEs. The network maintains control over resource allocation through signaling to UEs, providing the necessary coordination without requiring complex peer-to-peer negotiation mechanisms between devices.
Data Source
AI summary
A method of assigning resources to perform direct communications in a network of a wireless communication system includes generating and sending a first resource allocation configuration allocating resources for transmitting a transport block in a subframe to a first communication device; and generating and sending a second resource allocation configuration allocating resources for receiving the transport block in the subframe to a second communication device; wherein the resources for transmitting the transport block are identical to the resources for receiving the transport block.