Simultaneous PUCCH-PUSCH Priority Handling
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently supporting simultaneous physical uplink control channel (PUCCH) and physical uplink shared channel (PUSCH) transmissions with different priorities, particularly in scenarios where feedback information piggybacking on PUSCH is complex and inefficient, leading to reduced network reliability and throughput.
Innovation Solution
The system configures simultaneous PUCCH-PUSCH across multiple carriers by disabling control information piggybacking on PUSCH, allowing for data-only carriers and prioritizing transmissions based on priority indices, enabling efficient handling of overlapping scheduled transmissions and improving HARQ procedures and data throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If feedback information is piggybacked on PUSCH transmission, then spectral efficiency is improved, but device complexity and computational overhead increase
Solution Approach 1:
The patent segments the uplink transmission by designating specific carriers as data-only carriers (PUSCH) and others as control carriers (PUCCH). This segmentation allows feedback information to be transmitted on dedicated control carriers while data is transmitted on data-only carriers, improving spectral efficiency without requiring complex piggybacking operations on every carrier.
Solution Approach 2:
The patent extracts the feedback information transmission function from the data carriers and places it on dedicated control carriers. By taking out the control information piggybacking requirement, the system reduces computational complexity at the UE while maintaining spectral efficiency through dedicated control resources.
2Productivity
If simultaneous PUCCH-PUSCH transmission is supported across multiple carriers, then network throughput is improved, but handling of overlapping transmissions becomes more complex
Solution Approach 1:
The patent applies local quality by configuring different carriers with different roles: some carriers are configured as data-only carriers for PUSCH transmission, while others are configured as control carriers for PUCCH transmission. This localized functional assignment simplifies the handling of simultaneous transmissions by providing clear rules for each carrier type.
Solution Approach 2:
The patent introduces dynamic priority-based scheduling where overlapping transmissions are resolved based on priority indices assigned to different carriers and transmission types. This dynamic approach allows the system to adapt to different traffic conditions while maintaining simple per-carrier configuration rules.
3Ease of operation
If control information piggybacking is disabled on data-only carriers, then ease of operation is improved, but flexibility in feedback information transmission is reduced
Solution Approach 1:
The patent achieves universality by configuring multiple carriers with different functions: data-only carriers handle PUSCH transmissions, control carriers handle PUCCH transmissions, and the system can simultaneously support both types of carriers. This multi-functional carrier configuration provides both operational simplicity and transmission flexibility.
Solution Approach 2:
The patent adds a dimensional aspect to carrier configuration by introducing the concept of carrier type (data-only vs. control) as an additional dimension beyond traditional uplink/downlink classification. This dimensional expansion allows the system to simplify operations on each carrier type while maintaining overall flexibility through the diversity of carrier roles.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. The described techniques may provide for handling of priority indications in scenarios where simultaneous physical uplink control channel (PUCCH)-physical uplink shared channel (PUSCH) is supported. For example, wireless communications systems may configure (e.g., via radio resource control (RRC) signaling) simultaneous PUCCH-PUSCH across two or more carriers, where piggybacking of feedback information on uplink shared channel transmission may be disabled. Further, a grant (e.g., downlink control information (DCI) scheduling a PUSCH transmission) may include a priority index field to indicate a priority associated with a transmission or resources scheduled by the grant. The described techniques may provide for efficient handling of priority indications associated with scheduled transmissions that overlap when simultaneous PUCCH-PUSCH is supported (e.g., techniques are provided for performing or dropping scheduled transmissions that overlap when simultaneous PUCCH-PUSCH is enabled based on any priority indications associated with the overlapping scheduled transmissions).