MAC Control Element Duplication for Uplink Transmission Reliability
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Solution Overview
Problem
Current data transmission methods in LTE systems have relatively low reliability due to the lack of effective mechanisms for ensuring the transmission of duplicate data packets on different logical channels, which can lead to errors and inefficiencies in data communication.
Innovation Solution
A method where a terminal device generates and transmits duplicate MAC control elements on different uplink transmission resources, ensuring simultaneous transmission on the same time domain, either through frequency or time division multiplexing, to improve data transmission reliability, particularly by using different component carriers or logical channel groups for original and duplicate data packets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If duplicate data packets are transmitted on different logical channels, then data transmission reliability is improved, but the complexity of transmission management increases
Solution Approach 1:
The patent segments the transmission management by separating the original data packet and its duplicate into different logical channels with distinct QoS parameters. This allows independent management of each packet type, reducing the complexity of managing duplicates as a unified group while ensuring both achieve reliable delivery through channel-specific mechanisms.
Solution Approach 2:
The patent introduces a new dimension of management by assigning different QoS parameters and priority levels to original and duplicate packets. This dimensional differentiation allows the system to handle transmission complexity through structured parameter management rather than complex procedural control, simplifying the overall transmission management architecture.
2Reliability
If simultaneous transmission on different uplink resources is implemented, then transmission reliability is improved, but the resource coordination complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring uplink resources and QoS parameters for both original and duplicate packet transmissions before actual data transmission occurs. This advance preparation eliminates the need for complex real-time resource coordination, as the system simply follows pre-established transmission paths and parameters.
Solution Approach 2:
The patent utilizes parameter changes by dynamically adjusting QoS parameters, priority levels, and resource allocation based on the packet type (original or duplicate). This parameter-based management approach simplifies resource coordination compared to procedural management, as the system adapts transmission characteristics through parameter modification rather than complex scheduling decisions.
3Reliability
If different QoS parameters are assigned to original and duplicate packets, then transmission reliability is improved, but the configuration complexity increases
Solution Approach 1:
The patent segments the QoS configuration into distinct parameter sets for original and duplicate packets. Each packet type receives tailored QoS parameters (such as priority, bandwidth, latency requirements) appropriate to its transmission needs. This segmentation simplifies configuration by providing clear, separate guidelines for each packet type rather than requiring complex unified configurations.
Solution Approach 2:
The patent introduces configurational simplicity through another dimension by establishing clear differentiation rules between original and duplicate packet parameters. This dimensional framework provides a systematic approach to configuration, reducing complexity by organizing parameters along the original-vs-duplicate dimension rather than requiring ad-hoc configuration decisions for each transmission.
Data Source
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AI summary
This application provides a data transmission method, a terminal device, and a network device. The method includes: determining, by a medium access control MAC layer of a terminal device, a first MAC control element and a second MAC control element; and simultaneously transmitting, by the terminal device, the first MAC control element and the second MAC control element on different uplink transmission resources. The data transmission method, the terminal device, and the network device in embodiments of this application help to improve data transmission reliability.