CPC H04W 40/24 (2013.01) [H04B 7/15507 (2013.01); H04L 1/1657 (2013.01); H04W 12/009 (2019.01); H04W 12/106 (2021.01); H04W 12/61 (2021.01); H04W 40/22 (2013.01); H04W 40/248 (2013.01); H04W 56/0055 (2013.01); H04W 74/002 (2013.01); H04W 76/15 (2018.02); H04L 2001/0097 (2013.01); H04W 84/047 (2013.01); H04W 88/02 (2013.01); H04W 88/08 (2013.01); H04W 92/02 (2013.01); H04W 92/10 (2013.01); Y02D 30/70 (2020.08)] | 20 Claims |
1. A method for communication by a terminal, comprising:
sending a first data frame to a relay device, the first data frame comprising a first preamble and a first information set, and the first preamble being used to wake up the relay device;
sending a second data frame to the relay device, the second data frame comprising a second preamble and a second information set, the second data frame being sent after the terminal has sent the first data frame and a first time interval has elapsed, and a length of the second preamble being less than that of the first preamble; and
receiving a third data frame sent by the relay device, the third data frame being sent to the terminal after being received from a base station by the relay device.
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