Multi-Carrier BWP Allocation Using SBFD for TDD Latency
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing TDD systems face challenges in efficiently utilizing frequency domain resources due to half-duplex operation, leading to imbalanced uplink and downlink transmission rates and increased latency, which limits the effectiveness of both uplink and downlink services.
Innovation Solution
Implementing flexible bandwidth part (BWP) configuration and sub-band full duplex (SBFD) frequency domain resources across multiple carriers to enable simultaneous uplink and downlink data transmission, allowing for dynamic resource allocation and utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If half-duplex operation is used in TDD systems, then frequency domain resources can be allocated separately for uplink and downlink, but resource utilization rate decreases and transmission latency increases
Solution Approach 1:
The patent implements dynamic BWP configuration where the network can flexibly switch between half-duplex and full-duplex modes based on service requirements. The bandwidth part configuration includes dynamic indication fields that allow real-time adjustment of uplink-downlink resource allocation, enabling the system to adapt between HD and FD operations dynamically rather than being fixed in one mode.
Solution Approach 2:
The patent changes the operational parameter from fixed half-duplex to configurable full-duplex mode by introducing a full-duplex indication field in the BWP configuration. This parameter change enables the system to utilize both uplink and downlink resources simultaneously in the frequency domain, transforming the resource utilization model from sequential to parallel operation.
2Adaptability or versatility
If flexible slot configuration is implemented to allow F symbols for both UL and DL, then resource flexibility improves, but system complexity increases
Solution Approach 1:
The patent segments the bandwidth into multiple bandwidth parts (BWPs), each with independent configuration parameters including flexible slot patterns. This segmentation allows different parts of the spectrum to have different UL-DL configurations simultaneously, providing fine-grained control over resource flexibility while isolating the complexity management to individual BWP units rather than the entire system.
Solution Approach 2:
The BWP configuration structure is designed as a universal framework that can accommodate both half-duplex and full-duplex operations through configurable indication fields. The same configuration mechanism serves multiple functions: defining resource allocation, indicating duplex mode, and specifying flexible slot patterns, thereby reducing overall system complexity through consolidation rather than requiring separate control mechanisms for each function.
3Quantity of substance
If sub-band full duplex resources are allocated across multiple carriers, then network capacity increases, but resource allocation complexity increases
Solution Approach 1:
The patent extends the resource allocation from single-carrier to multi-carrier dimension by configuring SBFD resources across multiple component carriers. Each carrier can have independent BWP configurations with full-duplex capabilities, effectively adding a carrier dimension to the resource allocation space. This multi-dimensional approach increases network capacity by utilizing spectrum resources across multiple frequency bands simultaneously.
Solution Approach 2:
The network dynamically allocates and switches SBFD resources across multiple carriers based on service demands. The system can flexibly activate or deactivate full-duplex configurations on specific carriers and adjust BWP parameters in real-time, enabling adaptive resource allocation that optimizes network capacity while managing complexity through dynamic rather than static configuration.
Data Source
Figure 1A~2A
Figure 2B~3C
Figure 3D~4A
AI summary
The present disclosure provides a resource allocation method and apparatus and a device. The method includes: sending BWP frequency domain resource configuration information to a UE, where the BWP frequency domain (FD) resource configuration information includes a mapping relationship between resource identifier(ID) and SBFD FD resource; and the resource ID includes a BWP identifier and a carrier ID; sending target BWP indication information to the UE to enable the UE to obtain a target BWP configuration pair corresponding to the target BWP indication information from a BWP activation configuration table, where the target BWP configuration pair includes a target BWP identifier and a target carrier ID, and to determine, based on the mapping relationship between the resource ID and the SBFD FD resource, a target SBFD FD resource associated with the target BWP ID and the target carrier ID; where the BWP activation configuration table includes a mapping relationship between BWP indication information and BWP configuration pair. By the technical solutions of the present disclosure, the resource utilization rate can be increased.