Uplink Resource Conflict Handling for Reserved 5G NR Resources
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Solution Overview
Problem
In 5G NR communications, conflicts arise when reserved resources allocated for future services conflict with scheduled resources for existing terminal devices, leading to unclear UE behaviors and potential interference.
Innovation Solution
A method for terminal devices to determine behaviors when conflicting resource indications occur, prioritizing downlink control information over group-common PDCCH and adjusting transmission based on predefined or indicated priorities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If reserved resources are allocated for future services or standard evolution, then forward compatibility is improved, but resource conflicts with scheduled terminal devices occur
Solution Approach 1:
The patent applies preliminary action by pre-reserving resources for future services through semi-static signaling before actual conflicts occur. The network device pre-configures reserved resources using group-common PDCCH or other semi-static mechanisms, establishing a priority framework in advance that resolves conflicts when they arise without affecting future service deployment
Solution Approach 2:
The patent uses priority indication information as an intermediary mechanism to mediate between reserved resources and scheduled resources. When conflicts occur, the terminal device receives priority indication information that acts as a mediator to determine which resource takes precedence, eliminating the need for complex conflict resolution algorithms
2Adaptability or versatility
If group-common PDCCH is used to indicate reserved resources, then resource reservation for future services is achieved, but conflict with UE-specific scheduled resources creates unclear UE behavior
Solution Approach 1:
The patent changes the parameter of priority indication by introducing explicit priority information in the DCI format. Instead of relying on implicit rules about which signaling takes precedence, the system uses a priority field parameter that can be dynamically set to indicate whether reserved resources or scheduled resources have higher priority, making UE behavior unambiguous
3Reliability
If SFI takes priority over UE-specific DCI, then reserved resources are protected, but scheduled terminal devices experience resource conflicts and transmission interruptions
Solution Approach 1:
The patent applies dynamics by making the priority relationship between reserved and scheduled resources configurable rather than fixed. The network device can dynamically adjust priority indication information based on current traffic conditions, service types, and QoS requirements, allowing the system to switch between protecting reserved resources and ensuring scheduled transmission efficiency as needed
Data Source
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AI summary
A communication method is provided. The method includes: receiving, by UE, downlink control information, where the downlink control information indicates that a first resource is used to send uplink data information and/or uplink control information; receiving, by the UE, first information, where the first information indicates information about a second resource, and the second resource includes at least one of a reserved resource, a resource for uplink transmission, or a resource for downlink transmission; determining, by the UE, that the second resource includes the reserved resource; when the downlink control information indicates that the uplink data information is sent on the first resource, and there is a first overlapping part between the reserved resource and the first resource, sending, by the UE, the uplink data information on a part or all of the first resource except the first overlapping part, or ignoring the downlink control information; and when the downlink control information indicates that the uplink control information for feeding back acknowledgement is sent on the first resource, and there is the first overlapping part between the reserved resource and the first resource, sending, based on the downlink control information, the uplink control information for feeding back acknowledgement.