Uplink Channel Collision Resolution via MAC Prioritization
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Solution Overview
Problem
Current wireless communication systems face challenges in resolving uplink channel collisions between physical uplink control channels (PUCCH) and physical uplink shared channels (PUSCHs) with varying media access control (MAC) priorities, which affects the efficient multiplexing of uplink control information (UCI).
Innovation Solution
A method and apparatus for wireless communication that detect collisions between PUCCH and multiple PUSCHs with corresponding MAC priorities, selectively apply MAC prioritization rules to process the PUSCHs based on their priorities and their effect on UCI multiplexing, and selectively transmit the PUSCHs with UCI based on the application of these rules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If MAC prioritization rules are applied to resolve uplink channel collisions, then uplink channel collision resolution efficiency is improved, but decoding complexity at the base station increases due to potential ambiguity in UCI multiplexing configuration
Solution Approach 1:
The patent applies preliminary action by having the UE determine the UCI multiplexing configuration before transmitting uplink channels. The UE evaluates whether MAC prioritization rules would cause ambiguity in UCI multiplexing configuration, and proactively adjusts the multiplexing configuration to avoid such ambiguity before the collision resolution process begins. This prevents the base station from facing decoding complexity issues later.
Solution Approach 2:
The patent implements feedback by having the UE continuously monitor and determine the effect of MAC prioritization rules on UCI multiplexing configuration. When the UE detects that applying MAC prioritization would create ambiguity in the multiplexing configuration, it provides feedback by adjusting its transmission strategy to avoid the ambiguous configuration, thereby preventing increased decoding complexity at the base station.
2Reliability
If MAC prioritization rules are selectively applied based on their effect on UCI multiplexing configuration, then reliability of UCI transmission is improved, but device complexity at user equipment increases due to additional evaluation requirements
Solution Approach 1:
The patent applies preliminary action by having the UE determine the effect of MAC prioritization rules on UCI multiplexing configuration before actually applying the prioritization rules. This advance evaluation allows the UE to ensure reliable UCI transmission by avoiding ambiguous configurations while performing the assessment as an initial step in the transmission process.
Solution Approach 2:
The patent applies parameter changes by dynamically adjusting the UCI multiplexing configuration parameters based on the determined effect of MAC prioritization rules. When the evaluation shows that MAC prioritization would cause ambiguity, the UE changes the multiplexing configuration parameters to eliminate the ambiguity, thereby maintaining reliable UCI transmission.
3Productivity
If all PUSCHs are processed with MAC priorities in collision scenarios, then productivity of uplink transmission is improved, but loss of information may occur due to ambiguous UCI multiplexing configuration
Solution Approach 1:
The patent implements feedback by having the UE continuously evaluate whether applying MAC prioritization rules to all PUSCHs would create ambiguous UCI multiplexing configurations. When ambiguity is detected, the UE provides feedback by adjusting the multiplexing configuration or selecting alternative processing approaches, thereby preventing potential loss of UCI information while maintaining uplink transmission productivity.
Solution Approach 2:
The patent applies preliminary anti-action by having the UE identify and prevent ambiguous UCI multiplexing configurations before they can cause information loss. The UE evaluates the effect of MAC prioritization rules in advance and takes corrective action to avoid configurations that would lead to ambiguity and potential UCI information loss.
Data Source
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AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may detect a collision between a physical uplink control channel and a plurality of physical uplink shared channels (PUSCHs) with a corresponding plurality of media access control (MAC) priorities, selectively applying a MAC prioritization rule for processing the plurality of PUSCHs based at least in part on the corresponding plurality of MAC priorities and based at least in part on an effect of the plurality of MAC priorities on an uplink control information (UCI) multiplexing configuration for UCI multiplexing, and selectively transmitting at least one of the plurality of PUSCHs with the UCI based at least in part on a result of selectively applying the MAC prioritization rule. Numerous other aspects are provided.