Transmission Subframe Allocation for Direct User Equipment Communication
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Solution Overview
Problem
Existing wireless communication systems do not effectively allocate transmission resources for direct communication between user equipment, leading to inefficiencies in resource utilization and throughput.
Innovation Solution
A method and system that determine transmission subframes for data transmission between user equipment, considering both direct communication between user equipment and communication with the base station, by establishing separate subframe sets for uplink and downlink data transmission, and adjusting these subframes to ensure efficient resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the base station only allocates transmission resources for communication between the base station and the user equipment, then the allocation of uplink and downlink transmission resources can be determined according to service load, but transmission resources for direct communication between user equipments are not considered, leading to reduced resource utilization efficiency
Solution Approach 1:
The patent segments transmission resources by creating separate subframe sets: first subframe sets for uplink information transmission to the base station, second subframe sets for direct user equipment communication, and third subframe sets for downlink data reception. This segmentation allows independent optimization of each resource type while maintaining overall system coordination, resolving the contradiction between resource utilization efficiency and allocation complexity.
Solution Approach 2:
The patent implements dynamic resource allocation by allowing the base station to configure and adjust subframe sets based on service loads and communication requirements. The network can dynamically modify which subframes belong to which set, enabling flexible adaptation to changing traffic patterns while maintaining clear resource boundaries, thus balancing efficiency and complexity.
2Loss of energy
If user equipments directly transmit data to each other without base station coordination, then resource overhead between user equipment and base station is reduced, but interference with uplink and downlink communication resources may occur
Solution Approach 1:
The base station acts as an intermediary that coordinates direct user equipment communications. By configuring second subframe sets for direct communication and ensuring they do not overlap with first subframe sets (uplink) and third subframe sets (downlink), the base station prevents interference while enabling energy-efficient direct transmission. This mediator role maintains reliability without eliminating the energy savings of direct communication.
Solution Approach 2:
The patent introduces a temporal dimension to resource allocation by using different subframe sets for different communication types. Direct communication occurs in second subframe sets, while uplink and downlink communications occur in their respective subframe sets, creating time-division multiplexing that prevents interference. This dimensional separation allows simultaneous support of multiple communication modes without conflict.
3Productivity
If transmission subframes for direct user equipment communication are allocated without considering uplink response feedback subframes, then resource allocation is simplified, but conflicts may arise between direct communication subframes and uplink feedback subframes
Solution Approach 1:
The patent segments the transmission frame structure into distinct subframe sets: first subframe sets for uplink information including response feedback, second subframe sets for direct communication, and third subframe sets for downlink data. This segmentation ensures that direct communication subframes are explicitly separated from uplink feedback subframes, preventing conflicts while maintaining clear configuration boundaries that manage complexity.
Solution Approach 2:
The base station provides feedback to user equipment by notifying them of the configured second subframe sets for direct communication. This feedback mechanism ensures that user equipment knows which subframes to use for direct communication without conflicting with uplink feedback requirements, coordinating resource usage across the system to maintain both throughput and manageable complexity.
Data Source
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AI summary
Embodiments of the present invention disclose a method, a system and an equipment for determining a transmission subframe, and are applied to the field of communications technologies. A base station determines a first transmission subframe set for each of user equipments which directly communicate with each other to transmit uplink information within a predetermined time range and a second transmission subframe set for each user equipment to directly transmit data to another user equipment within the predetermined time range respectively, where intersection sets between a second transmission subframe set determined for any user equipment and a first transmission subframe set determined for another user equipment that directly communicates with the user equipment and between the second transmission subframe set determined for the any user equipment and a second transmission subframe set determined for the another user equipment that directly communicates with the user equipment are empty; and finally, notifies information of the second transmission subframe set of the user equipment to the user equipment. When the base station determines transmission resources for data transmission, not only a factor that the base station communicates with each user equipment is considered, but also a factor that the user equipments directly communicate with each other is also considered, thereby improving system resource utilization efficiency.