Uplink ACK Codebook Priority for eMBB and URLLC Collisions
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Solution Overview
Problem
Existing wireless communications networks face challenges in efficiently handling diverse data traffic profiles and service types, particularly in managing collisions of uplink communications resources for acknowledgement information transmission in scenarios involving different service types such as eMBB and URLLC, which require different quality of service requirements.
Innovation Solution
A method for a communications device to determine and prioritize uplink communications resources for acknowledgement information transmission based on predetermined rules reflecting quality of service requirements, allowing it to transmit acknowledgement information using the resource with higher priority in case of collisions, ensuring timely and appropriate transmission of acknowledgement status for different service types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If uplink communications resources are allocated for transmitting acknowledgement information for multiple service types, then the network can support diverse service requirements, but resource collisions occur when resources for different service types overlap in time
Solution Approach 1:
The patent segments uplink communications resources by service type, creating separate resource pools for different service types (e.g., eMBB and URLLC). When a collision is detected between resources of different service types, the system segments the acknowledgement information transmission by selecting only the higher-priority service type's resources, thereby preventing resource conflicts while maintaining support for multiple service types.
2Loss of information
If acknowledgement information for all service types is transmitted using available uplink resources, then comprehensive feedback is provided, but transmission timing conflicts arise when resources overlap
Solution Approach 1:
The patent implements preliminary detection of resource collisions between different service types before transmission. When a collision is detected, the system performs preliminary selection of the higher-priority service type based on predetermined rules (e.g., URLLC priority over eMBB). This preliminary action prevents timing conflicts by determining in advance which service type's acknowledgement information will be transmitted, avoiding the need to transmit conflicting transmissions simultaneously.
3Ease of manufacture
If uplink resources are allocated without considering service type priorities, then resource allocation is simple, but quality of service requirements cannot be met
Solution Approach 1:
The patent applies local quality by assigning different priority levels to different service types at specific resource locations. Each uplink resource is tagged with service type information and priority level. When allocating resources, the system locally evaluates the priority of each service type involved in a collision and applies the appropriate priority rule (e.g., URLLC > eMBB). This maintains relative simplicity while ensuring quality of service requirements are met through localized priority-based decisions.
Data Source
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AI summary
A method of receiving data by a communications device in a wireless communications network, the method comprising receiving one or more first downlink data blocks and one or more second downlink data blocks, for each of the one or more first downlink data blocks and one or more second downlink data blocks determining an acknowledgement status, the acknowledgement status indicating whether the downlink data block was correctly received or not received correctly (ACK/NACK), receiving an indication of first uplink communications resources allocated for transmitting first acknowledgement information including the acknowledgement status for the one or more first downlink data blocks, determining that the first uplink communications resources are allocated for the transmission of acknowledgement information generated in accordance with a first codebook, the first codebook for generating acknowledgement information associated with the one or more first downlink data blocks, receiving an indication of second uplink communications resources allocated for transmitting second acknowledgement information including the acknowledgement status for the one or more second downlink data blocks, determining that the second uplink communications resources are allocated for the transmission of acknowledgement information generated in accordance with a second codebook, the second codebook for generating acknowledgement information associated with the one or more second data blocks, determining that the communications device is not capable of transmitting acknowledgement information using the first uplink communications resources and acknowledgement information using the second uplink communications resources, determining that a priority for transmitting acknowledgement information using the second communications resources is higher than a priority for transmitting acknowledgement information using the first communications resources, and in response to determining that the priority for transmitting acknowledgement information using the second communications resources is higher than the priority for transmitting acknowledgement information using the first communications resources, transmitting acknowledgement information using the second uplink communications resources, the transmitted acknowledgement information comprising an acknowledgement status indication representing the acknowledgement status of the one or more second downlink data blocks, and not transmitting acknowledgement information using the first communications resources.