Techniques for selectively combining multiple transmissions to recover a message comprised of multiple frames. Initially, each transmission is separately processed to recover the message. If the message cannot be recovered error-free from any single transmission, then portions of multiple transmissions are selectively combined to recover the message. Erased frames in a message recovered from a primary transmission (e.g., the one with the best pilot Ec/I0) and good frames from other transmissions are determined (e.g., based on the frame-level CRC). One or more combined messages are then formed, each including a different set of good frames substituting for the erased frames. If a good frame cannot be derived from any single transmission for a given erased frame, then symbols from multiple transmissions may be combined to derive the good frame. Each combined message is checked (e.g., based on the message-level CRC) to determine whether it is good or erased.
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机译：用于选择性地组合多个传输以恢复由多个帧组成的消息的技术。最初，每个传输都被单独处理以恢复消息。如果无法从任何单个传输中无错误地恢复消息，则可以选择性地组合多个传输的部分以恢复消息。确定从一次传输中恢复的消息中的擦除帧（例如，具有最佳导频E c / I 0 的帧）和来自其他传输的良好帧（例如，基于帧级CRC）。然后形成一个或多个组合消息，每个消息包括一组不同的好帧来代替擦除的帧。如果对于给定的擦除帧，不能从任何单个传输中得出良好帧，则可以组合来自多个传输的符号以得出良好帧。检查每个组合的消息（例如，基于消息级别的CRC），以确定它是好消息还是已擦除消息。
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