Systems and methods for pilot signal and control data retransmission

摘要

Historical decoding can be performed in accordance with pilot signal retransmission or control information retransmission to reduce the amount network resources consumed during data recovery. In one example, historical decoding is achieved through retransmitting a sub-set of coded bits carried by an earlier transmission, which are compared with a corresponding portion of the original signal (stored in memory) to obtain improved channel state information (CSI) relating to that earlier transmission. In another example, historical decoding is achieved through communicating parity information related to a sub-set of the coded bits carried by an earlier transmission, which are used in accordance with a data aided CSI technique to obtain the improved CSI relating to that earlier transmission. In yet another example, historical decoding is achieved by re-transmitting control information carried by an earlier transmission.

主权项

1. A method for operating a receiver, the method comprising:
receiving, by the receiver, a first encoded packet carrying coded bits at a first time-frequency instance; estimating channel state information (CSI) corresponding to the first time-frequency instance; storing the first encoded packet in memory; receiving, by the receiver, a second encoded packet at a second time-frequency instance, the second encoded packet carrying a sub-set of the coded bits carried by the first encoded packet; comparing the sub-set of coded bits carried by the second encoded packet with a corresponding portion of the first encoded packet stored in the memory to obtain improved CSI corresponding to the first time-frequency instance, wherein comparing the sub-set of coded bits carried by the second packet with the corresponding portion of the first encoded packet comprises determining values for the sub-set of coded bits carried by the second encoded packet, and comparing the values of the sub-set of coded bits carried by the second encoded packet to the corresponding portion of the first encoded packet stored in the memory to obtain the improved CSI corresponding to the first time-frequency instance; and decoding the first encoded packet stored in the memory in accordance with the improved CSI to obtain the coded bits.