Interference Measurement Reporting for Inter-Subband CLI Scheduling
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Solution Overview
Problem
In wireless networks operating in subband non-overlapping full duplex mode, inter-subband cross-link interference (CLI) occurs due to simultaneous uplink and downlink transmissions, leading to reduced coverage and increased latency, and existing systems lack effective methods to manage this interference.
Innovation Solution
User equipment (UE) and base stations (BS) are equipped with processors and wireless transceivers to configure and receive interference measurement (IM) resources, allowing them to acquire and report values and indices that help identify and mitigate inter-subband CLI by scheduling transmissions to avoid or reduce interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If subband non-overlapping full duplex mode is implemented to allow simultaneous UL and DL transmissions, then network capacity and spectral efficiency are improved, but inter-subband cross-link interference occurs between devices
Solution Approach 1:
The patent segments the frequency spectrum into multiple subbands and assigns specific subbands for uplink and downlink transmissions separately. By dividing the frequency resource into non-overlapping subbands, the system enables full duplex operation while spatially separating interfering signals in the frequency domain, thereby managing inter-subband CLI effectively
Solution Approach 2:
The patent introduces an intermediary measurement mechanism where user equipment measures interference on designated interference measurement resources and reports results to the network. This intermediary feedback loop enables the network to identify and adjust interfering transmissions, acting as a mediator between the conflicting uplink and downlink operations
2Area of stationary object
If allocation of limited time duration for UL transmissions is increased to improve coverage, then coverage is improved, but latency increases
Solution Approach 1:
The patent transitions from time-division multiplexing to frequency-division multiplexing by implementing full duplex mode with non-overlapping subbands. This dimensional change from time to frequency domain allows simultaneous uplink and downlink transmissions, achieving both improved coverage and reduced latency by eliminating the time allocation trade-off
Data Source
AI summary
Disclosed are methods and apparatuses for signal measurement configuration. An embodiment of the subject application provides a user equipment (UE). The UE includes: a processor and a wireless transceiver coupled to the processor, wherein the processor is configured to, with the wireless transceiver: receive a report setting for interference measurement (IM) results report; receive at least two resource settings associated with the report setting; wherein the at least two resource settings are both for IM, and include a first resource setting containing a first configuration of one or more first IM resources and a second resource setting containing a second configuration of one or more second IM resources, and each of the one or more second IM resources is associated with one of the one or more first IM resource; acquire at least one first value based on at least one first IM resource of the one or more first IM resources and at least one second value based on at least one second IM resource of the one or more second IM resources, wherein each of the at least one second IM resource is associated with one of the at least one first IM resource; determine at least one third value based on the at least one first value and the at least one second value; report the at least one third value and at least one resource index corresponding to the at least one second IM resource.