Dynamic Uplink Gap Allocation for Critical UE Responses
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Solution Overview
Problem
Existing wireless communication systems face challenges in managing uplink gaps, leading to potential communication disruptions, downlink throughput loss, and failed connections due to uplink slots being configured as static gaps, which can interfere with timer responses and random access procedures.
Innovation Solution
A user equipment (UE) dynamically manages uplink gap slots by deactivating them during critical communication events, such as radio link failures or beam failures, to ensure timely responses and maintain communication continuity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If uplink slots are configured as static uplink gaps, then uplink calibration and monitoring can be performed, but communication reliability deteriorates due to inability to respond to critical events
Solution Approach 1:
The patent implements dynamic uplink gap configuration where the network can activate or deactivate uplink gap patterns based on communication conditions. When critical events are detected, the network deactivates the uplink gap pattern, allowing the UE to use uplink slots for communication instead of calibration, thus adapting the system behavior to maintain reliability during critical moments.
Solution Approach 2:
The system changes the operational parameters of uplink slots by switching between gap and non-gap states through network-controlled activation and deactivation. This parameter change allows the same uplink slots to serve different functions (calibration vs. communication) depending on system needs, resolving the contradiction between maintaining calibration capability and ensuring communication reliability.
2Loss of energy
If uplink slots are configured as static gaps, then uplink calibration is maintained, but downlink throughput is reduced due to lost communication opportunities
Solution Approach 1:
The patent employs periodic uplink gap patterns that are activated and deactivated in cycles based on communication needs. During normal operation, gaps are activated for calibration; during critical communication events, they are deactivated for throughput. This periodic switching optimizes the balance between calibration stability and throughput efficiency.
Solution Approach 2:
The dynamic activation and deactivation of uplink gap patterns allows the system to adaptively allocate uplink slots between calibration and communication functions. This dynamic approach prevents permanent throughput loss by only sacrificing slots for calibration when necessary, thereby reducing overall downlink throughput loss while maintaining calibration capability.
3Reliability
If uplink slots are configured as static gaps, then uplink monitoring is enabled, but connection stability deteriorates due to failed random access procedures
Solution Approach 1:
The system dynamically changes the operational state of uplink slots by deactivating gap patterns during random access procedures. This parameter change ensures that uplink slots are available for random access transmissions rather than being reserved for monitoring, thereby maintaining connection stability while enabling proper random access execution.
Solution Approach 2:
The network proactively deactivates uplink gap patterns before critical communication events such as random access procedures occur, ensuring that uplink resources are immediately available when needed. This preliminary action prevents connection failures by anticipating and preparing for communication requirements in advance.
Data Source
AI summary
Aspects of the present disclosure relate to wireless communications, and more particularly, to techniques and devices for uplink gap configuration and determination of uplink resources after uplink gap distribution. Certain aspects are directed to an apparatus for wireless communications at a user equipment (UE). The UE may include a memory comprising instructions, and one or more processors configured to execute the instructions. In some examples, the instructions may cause the apparatus to obtain, from a base station, an uplink gap pattern (ULGP) configuration indicating a first ULGP associated with a first time window, wherein the first ULGP is indicative of a distribution of one or more uplink slots activated as uplink gaps within the first time window, and wherein the one or more uplink slots are independent from being used for any transmission initiated by the apparatus.