Uplink Transmission in Flexible Symbols for Crosslink Interference
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Solution Overview
Problem
Current wireless communication systems, particularly in 5G NR, face challenges in handling collisions between uplink transmissions and crosslink interference measurements, where existing protocols prioritize interference measurement over uplink transmissions, reducing the number of available uplink opportunities for user equipment (UE).
Innovation Solution
The system allows user equipment (UE) to perform uplink transmissions in symbols configured for both uplink and crosslink interference measurement, or in symbols immediately preceding or following those configured for measurement, thereby enabling more flexible operation and increasing uplink opportunities without adding significant complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the UE prioritizes CLI measurement over UL transmission in collision scenarios, then measurement precision is improved, but productivity deteriorates due to reduced UL opportunities
Solution Approach 1:
The patent implements dynamic prioritization where the UE can switch between prioritizing CLI measurement and UL transmission based on real-time conditions. The network can configure different behaviors dynamically, allowing the system to adapt to varying traffic loads and interference conditions, thus resolving the contradiction by making the priority relationship flexible rather than fixed
Solution Approach 2:
The patent changes the parameter of priority assignment by introducing configurable parameters that allow the UE to adjust its behavior. Through RRC configuration and dynamic indications, the system can change which function (CLI measurement or UL transmission) takes priority in collision scenarios, enabling optimization of both measurement precision and transmission opportunities under different conditions
2Measurement precision
If the network configures numerous CLI measurement resources, then measurement precision is improved, but productivity deteriorates due to guaranteed reduction in UL resources
Solution Approach 1:
The patent enables dynamic resource allocation where the network can adjust the number and timing of CLI measurement resources based on actual network conditions and UL traffic demands. This dynamic configuration allows the system to maintain adequate measurement precision while preserving sufficient UL opportunities, resolving the contradiction by making the resource allocation flexible rather than static
Solution Approach 2:
The patent allows the network to pre-configure CLI measurement resources and UL resources in advance, but with the capability to adjust these configurations based on predicted or observed traffic patterns. By performing preliminary configuration that can be optimized beforehand, the system can prepare adequate measurement resources without permanently sacrificing UL opportunities
3Measurement precision
If the UE is restricted from transmitting in CLI measurement symbols, then measurement precision is improved, but ease of operation deteriorates due to reduced scheduling flexibility
Solution Approach 1:
The patent implements dynamic scheduling where the UE's transmission restrictions in CLI measurement symbols can be adjusted in real-time. The network can dynamically indicate whether the UE should prioritize measurement or transmission in each collision scenario, providing scheduling flexibility while maintaining measurement reliability when needed
Solution Approach 2:
The patent changes the operational parameters by introducing configurable parameters that control UE behavior in collision scenarios. Through RRC configuration and dynamic indications, the system can modify transmission restrictions based on current needs, making the operation easier by allowing flexible scheduling decisions rather than rigid restrictions
Data Source
AI summary
A method of wireless communication performed by a user equipment (UE) includes: receiving an assigned slot format from a network, the slot format including a plurality of symbols, a first subset of the symbols being designated for uplink, a second subset of the symbols being designated for downlink, and a third subset of the symbols being designated as flexible; and performing an uplink transmission on a first symbol of the third subset, wherein the first symbol of the third subset is configured for crosslink interference (CLI) measurement.