Terminal Device Repetition Coding for Coverage Extension

The patent segments the control information transmission into multiple repeated transmissions, each with identical content but separated by time intervals. The terminal device processes these segmented transmissions independently and combines them to achieve both improved reliability through repetition and accurate timing synchronization by identifying the final transmission's position in the sequence.

The patent applies preliminary action by pre-configuring the terminal device with knowledge of the repetition pattern and timing relationship before transmission begins. The terminal device is预先 informed about the number of repetitions and the time interval between them, enabling it to accurately determine timing synchronization without requiring complex real-time analysis of each repeated transmission.

The patent implements self-service by enabling the terminal device to autonomously determine the number of repetitions and timing relationships without requiring complex network coordination or additional control signaling. The terminal device uses pre-configured parameters and simple counting mechanisms to manage the repeated transmissions, significantly reducing processing complexity while maintaining high reception reliability.

The patent applies parameter changes by varying the repetition count and time interval parameters based on channel conditions and coverage requirements. Rather than using a fixed complex processing scheme, the system adjusts these parameters to optimize the balance between reception reliability and device complexity, allowing terminal devices to operate efficiently across different coverage scenarios.

The patent extracts the timing information from the control information coding structure itself. By embedding timing indicators within the control information that is already being transmitted repeatedly, the system obtains accurate timing synchronization without requiring separate timing channels or complex extraction processes. The timing information is taken out as a distinct element that can be independently processed.

The patent applies universality by designing the control information structure to serve multiple functions simultaneously: conveying scheduling information, indicating repetition patterns, and providing timing synchronization references. This multi-functional design eliminates the need for separate dedicated timing channels or additional signaling, reducing decoding complexity while maintaining high timing accuracy.