TS Format Packet Retransmission via CC and Sequence Number

The patent segments the packet identification into multiple components: the CC field (4 bits) combined with a sequence number field (N bits). This segmentation allows the system to use the CC field for quick continuity checking while the sequence number provides extended range identification, preventing misjudgment due to wraparound. The combined identification space becomes 4+N bits, significantly larger than the original 4-bit CC field alone.

The patent adds another dimension (sequence number) to the original CC field identification system. Instead of relying solely on the 4-bit CC field, the system now uses a two-dimensional identification space combining CC values and sequence numbers. This dimensional expansion transforms the limited 0-15 range into a much larger unique identification space, eliminating wraparound misjudgment while preserving the efficiency of CC-based continuity detection.

The patent merges the CC field and sequence number field into a unified packet identification mechanism. Rather than treating them as separate complex systems, the patent combines them into a single logical identification unit where the retransmission request includes both CC values and sequence numbers. This merging simplifies the overall identification process while maintaining high reliability, as the combination provides unique packet identification without requiring complex additional processing.

The patent enables the packet identification system to be self-sufficient by using fields that are already present in the TS packet structure (CC field and sequence number). No external or additional complex identification mechanisms are required - the system uses its own existing fields to achieve reliable packet loss detection. This self-service approach reduces complexity while maintaining reliability.