Full Duplex Resource Block Segmentation for Mixed User Interference
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Solution Overview
Problem
Current wireless communication systems, such as LTE, are limited by half-duplex communication methods that prevent full-duplex capable users from utilizing their full potential, leading to inefficiencies in network capacity and data rates, especially when mixed with half-duplex users.
Innovation Solution
A method and apparatus for providing full-duplex wireless communication by determining resource block allocations and scheduling parameters for both full-duplex and half-duplex users, allowing concurrent downlink and uplink communication in designated full-duplex portions, and adjusting these allocations based on user capabilities and parameters, while employing echo cancellation techniques to minimize interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If half-duplex communication methods are used to separate UL and DL transmissions, then interference between transmit and receive signals is eliminated, but network capacity and data rates are limited
Solution Approach 1:
The system segments communication resources by creating separate FD portions and HD portions within resource blocks. FDC UEs are allocated FD portions where they can simultaneously transmit and receive, while HDC UEs are allocated HD portions with traditional separation. This segmentation allows the system to achieve full-duplex capacity gains for capable users while maintaining compatibility with legacy half-duplex users, effectively resolving the contradiction between network capacity improvement and interference prevention.
2Productivity
If full-duplex communication is implemented for FDC users, then channel capacity is doubled and data rates are enhanced, but complexity of resource allocation and scheduling increases
Solution Approach 1:
The resource block structure is segmented into FD portions and HD portions, allowing simplified scheduling rules to be applied to each segment. The eNodeB determines UE capabilities and allocates appropriate portions, reducing the complexity of managing mixed FD/HD traffic. This segmentation approach enables the system to achieve high data rates for FDC UEs while maintaining manageable scheduling complexity through structured resource division.
Solution Approach 2:
The system dynamically adjusts resource allocation based on UE capabilities and channel conditions. The eNodeB determines which UEs are FDC and which are HDC, then dynamically allocates FD or HD portions accordingly. This dynamic adaptation allows the system to optimize data rates for each user type while managing scheduling complexity through capability-based resource management.
3Productivity
If FD portions are allocated to FDC UEs for concurrent UL and DL communication, then spectral efficiency is improved, but interference management becomes more difficult
Solution Approach 1:
The patent introduces an intermediary mechanism where the eNodeB acts as a central coordinator that manages interference between FD and HD portions. The eNodeB determines UE capabilities, allocates appropriate resource portions, and coordinates transmissions to minimize interference. This intermediary management layer enables the system to achieve high spectral efficiency in FD portions while preventing interference to HD portions and other UEs, resolving the contradiction between spectral efficiency improvement and interference management.
Data Source
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AI summary
A method, an apparatus, and a computer program product for providing full duplex (FD) wireless communication to an FD capable (FDC) user equipment (UE) among one or more UEs include determining allocations of one or more resource blocks (RBs) to the one or more UEs, determining FD capabilities and scheduling parameters of the one or more UEs, determining at least one FD portion and at least one half duplex (HD) portion in the one or more RBs based on the FD capabilities and the scheduling parameters of the one or more UEs, wherein a concurrent downlink (DL) and uplink (UL) communication is scheduled in the at least one FD portion, and adjusting the allocations of the one or more RBs based on the at least one FD portion and the at least one HD portion.