Bandwidth Part Resource Allocation for Full-Duplex 5G TDD
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing uplink and downlink resources within bandwidth parts, particularly in the context of 5G Advanced wireless communication, where the coexistence of downlink and uplink operations within a TDD channel bandwidth is desired but not effectively addressed.
Innovation Solution
The establishment of non-overlapping first and second bandwidth parts, each with specific uplink and downlink resources, allows for concurrent duplex operation, enabling flexible resource allocation for different user equipment groups or enterprises, with parameters such as subband frequencies and spacings determined by the network operator.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If TDD channel bandwidth is divided into non-overlapping subbands with timeslots divided between downlink and uplink, then spectral efficiency is improved through flexible resource allocation, but the system cannot achieve true full duplex operation where downlink and uplink coexist simultaneously
Solution Approach 1:
The patent divides the TDD channel bandwidth into multiple non-overlapping subbands, where certain subbands are designated for downlink and others for uplink. This segmentation allows simultaneous downlink and uplink transmissions in different frequency subbands, enabling full duplex operation while maintaining spectral efficiency through flexible resource allocation.
Solution Approach 2:
The patent transitions from traditional time-division multiplexing (single dimension) to frequency-division multiplexing within TDD (adding frequency dimension). By allocating different subbands for downlink and uplink simultaneously, the system achieves full duplex operation by utilizing the frequency dimension, allowing both directions to coexist without time separation.
2Adaptability or versatility
If multiple bandwidth parts are established for different user equipment groups with concurrent duplex operation, then resource allocation flexibility is improved, but system complexity increases due to multiple non-overlapping bandwidth parts management
Solution Approach 1:
The patent segments the total bandwidth into multiple bandwidth parts, each serving different user equipment groups. Each bandwidth part contains non-overlapping subbands allocated for downlink and uplink. This segmentation enables independent resource allocation for different UE groups, improving flexibility while the modular structure helps manage complexity through standardized configurations.
Solution Approach 2:
The patent applies different resource allocation configurations to different bandwidth parts based on local requirements. Each bandwidth part can have customized subband allocations, UE group assignments, and duplex configurations tailored to specific service requirements, enabling optimized local resource management while maintaining overall system coordination.
Data Source
AI summary
Uplink and downlink resources within a wireless network are assigned such that full duplex operation is enabled within a bandwidth parts. A first bandwidth part and non-overlapping second bandwidth part are assigned for use by respective first and second groups of user equipment. Uplink resources and downlink resources are also allocated within each bandwidth part. The uplink and downlink resources may be specified by a subband within the each bandwidth part and a timeslot, to thereby enable duplex operation of the first group of user equipment. Communications are then performed with the first group of user equipment using the uplink and downlink resources of first bandwidth part and communication with the second group of user equipment is performed using the uplink and downlink resources of the second bandwidth part.