Subband Full Duplex Signals with Non-Contiguous Reference Allocation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems lack flexibility in frequency domain resource allocation, particularly in subband full duplex (SBFD) systems, where reference signals are restricted to contiguous resource blocks, limiting the potential for efficient utilization of bandwidth and causing interference due to high transmit power differences between downlink and uplink signals.
Innovation Solution
Implementing non-contiguous frequency domain resource allocation by linking at least two reference signal resources, such as CSI-RS and SRS, to form a linked resource with non-contiguous frequency domain allocation, allowing for separate configurations of downlink and uplink RBs in SBFD systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If reference signals are restricted to contiguous resource blocks, then device complexity is reduced, but bandwidth utilization is limited and interference increases
Solution Approach 1:
The patent divides the frequency domain resource allocation into multiple contiguous resource block groups (RBGs), where each RBG can be independently configured and allocated. This segmentation allows the system to achieve non-contiguous resource allocation by selecting and combining multiple RBGs, thereby improving bandwidth utilization while maintaining manageable complexity through standardized RBG structures.
Solution Approach 2:
The patent introduces a new dimension of resource allocation by enabling non-contiguous frequency domain allocation through multiple RBG indicators in the DCI format. This moves beyond traditional single-contiguous allocation to a multi-segment allocation scheme, allowing flexible bandwidth utilization across different frequency regions while maintaining systematic control.
2Adaptability or versatility
If non-contiguous frequency domain resource allocation is implemented, then bandwidth utilization is improved, but device complexity increases
Solution Approach 1:
The patent creates a universal resource allocation mechanism that can handle both contiguous and non-contiguous allocations through the same RBG-based framework. The multi-RBG indicator field in DCI provides a unified solution that works for various allocation scenarios, reducing the need for separate configuration mechanisms and thereby managing complexity while providing frequency domain flexibility.
Solution Approach 2:
The patent changes the allocation parameters by introducing multiple RBG start positions and lengths that can be independently configured. This allows the system to adapt the frequency domain allocation pattern dynamically based on channel conditions and traffic requirements, achieving flexibility through parameter variation rather than structural complexity.
3Object-affected harmful factors
If contiguous resource blocks are used for reference signals, then configuration simplicity is maintained, but interference from high transmit power differences between downlink and uplink signals increases
Solution Approach 1:
The patent segments the frequency domain into multiple RBGs that can be separately allocated for downlink and uplink reference signals. This segmentation allows the system to place downlink and uplink signals in different frequency regions with sufficient separation, reducing mutual interference while maintaining independent configuration of each segment.
Solution Approach 2:
The patent applies local quality by allowing different RBGs to have different allocation characteristics suited to their specific function. Downlink RBGs can be configured with parameters optimized for downlink channel sounding, while uplink RBGs use parameters optimized for uplink sounding, with each local region having tailored properties to minimize interference and maximize performance.
Data Source
AI summary
A method, system and apparatus are disclosed. According to some embodiments, a network node configured to communicate with a wireless device (WD) is provided. The network node is configured to configure a WD with a resource block (RB) configuration, the RB configuration including one of: a first set of at least one uplink RB separating two sets of at least one downlink RB in the frequency domain, the two sets of at least one downlink RB being configured as a channel state information reference signal (CSI-RS) resource; and a second set of at least one downlink RB separating two sets of at least one uplink RB, the two sets of at least one uplink RB being configured as a sounding reference signal (SRS) resource.