Measurement Gap Sharing for Delay-Critical Wireless Traffic
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Solution Overview
Problem
Wireless communication systems face challenges in efficiently sharing measurement gaps with delay-critical traffic, such as extended reality (XR) and ultra-reliable low-latency communications (URLLC), leading to delayed data transfer due to overlapping measurement gaps with discontinuous reception (DRX) cycles.
Innovation Solution
A network entity configures user equipment (UE) with a parameter indicating a fraction or percentage of scheduled measurement gaps for performing measurements, allowing the UE to suppress some gaps and receive critical data during suppressed gaps, while continuing measurements during non-suppressed gaps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If measurement gaps are scheduled for performing measurements, then measurement precision is improved, but data transfer efficiency deteriorates due to overlapping with DRX cycles
Solution Approach 1:
The patent applies parameter changes by introducing a sharing parameter that dynamically adjusts the number of measurement gaps based on traffic conditions. When delay-critical traffic is detected, the parameter is modified to reduce measurement gaps, allowing data reception during those time resources. This resolves the contradiction by changing the measurement gap parameter to prioritize data transfer efficiency when needed, while maintaining measurement precision when traffic conditions allow.
2Productivity
If measurement gaps are suppressed to receive critical data, then data transfer efficiency is improved, but measurement precision deteriorates
Solution Approach 1:
The sharing parameter is dynamically adjusted based on traffic conditions to resolve this contradiction. When delay-critical traffic is present, the parameter is changed to suppress measurement gaps, prioritizing data transfer. When traffic conditions improve, the parameter is adjusted to restore measurement gaps, thereby maintaining measurement precision. This dynamic parameter adjustment resolves the contradiction by adapting to real-time conditions.
Solution Approach 2:
The patent implements dynamics by making the measurement gap configuration dynamic rather than static. The sharing parameter is updated based on detected traffic conditions, allowing the system to adapt between prioritizing measurements and prioritizing data transfer. This dynamic approach resolves the contradiction by enabling the system to flexibly switch between the two competing requirements based on actual network conditions.
3Loss of time
If measurement gaps are reduced for delay-critical traffic, then latency is reduced, but measurement reliability deteriorates
Solution Approach 1:
The sharing parameter is changed dynamically to reduce measurement gaps when delay-critical traffic is detected, thereby reducing latency. When traffic conditions improve or no critical traffic is present, the parameter is adjusted to restore measurement gaps, maintaining measurement reliability. This parameter change approach resolves the contradiction by adapting measurement gap configuration to real-time traffic conditions.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A network entity may transmit, to a user equipment (UE), a configuration including a parameter indicating a quantity of scheduled measurement gaps that may be used for performing measurements. The UE may apply the parameter by suppressing one or more measurement gaps and may receive data from the network entity via one or more time resources (e.g., a slot, a symbol) associated with the suppressed measurement gaps. The UE may perform measurements during the measurement gaps that are not dropped. In some examples, the network entity may configure the parameter based on scheduled data traffic, one or more criteria associated with the UE satisfying a threshold, or any combination thereof. In some examples, the UE may stop applying the parameter based on a timer, an event trigger, or both.