Line sequence determination method and related device

The invention provides a line sequence determination method and a related device. The accuracy of line sequence detection can be improved. The method comprises: obtaining a plurality of channel coefficients, the plurality of channel coefficients comprising N channel coefficients corresponding to a first terminal, the N channel coefficients comprising a channel coefficient of an LOS channel between one antenna of the first terminal and N antennas of a network device, N being an integer greater than 1; a target coefficient combination is determined from M coefficient combinations corresponding to a first terminal, the utility value of the target coefficient combination is larger than the utility values of other coefficient combinations in the M coefficient combinations, each coefficient combination comprises N channel coefficients, the arrangement modes of the channel coefficients included in any two coefficient combinations in the M coefficient combinations are different, and M = N! N! M represents the factorization of N, and M is a positive integer; and determining whether the line sequence is correct based on the sequence of the channel coefficients in the target coefficient combination.