CPC H04W 56/0045 (2013.01) [H04B 7/18517 (2013.01); H04B 7/18589 (2013.01); H04L 27/2607 (2013.01); H04L 27/26025 (2021.01); H04W 56/001 (2013.01); H04W 56/0005 (2013.01); H04W 56/006 (2013.01); H04W 74/0833 (2013.01); H04W 84/06 (2013.01)] | 19 Claims |
1. A method for determining a timing advance by a terminal, comprising:
receiving and acquiring relevant parameters in a configuration message, wherein the relevant parameters comprise cell common time delay information;
estimating a relative transmission time delay corresponding to a propagation distance difference between a user link propagation path of the terminal and a minimum link time delay path of a reference terminal at a preset position to a satellite;
determining a cell-specific timing advance of deviation between a cell common time delay from broadcast signaling and integral multiple time slots according to the cell common time delay information; and
determining, according to the relative transmission time delay and the cell-specific timing advance, an uplink timing advance of an uplink transmission timing position with respect to a configuration message receiving position.
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