Method and apparatus for random access
A method for random access is applied to a terminal, and includes: receiving feedback information from a base station during a random access procedure according to at least one of first receiving timing information or second receiving timing information; wherein the first receiving timing information and the second receiving timing information correspond to different manners for determining a timing advance by the terminal; and wherein the first receiving timing information is different from the second receiving timing information.
1 . A method for random access, applied to a terminal and comprising:
receiving feedback information from a base station during a random access procedure according to at least one of first receiving timing information or second receiving timing information;
wherein the first receiving timing information and the second receiving timing information correspond to different manners for determining a timing advance by the terminal;
wherein the first receiving timing information is different from the second receiving timing information;
wherein the first receiving timing information comprises at least one of a first offset of a first time window for receiving a random access response relative to a first receiving moment, or a first length of the first time window; and/or
the second receiving timing information comprises at least one of a second offset of a second time window for receiving a random access response relative to a second receiving moment, or a second length of the second time window; and
wherein the first offset is different from the second offset, and/or the first length is different from the second length.
2 . The method according to claim 1 , wherein receiving the feedback information from the base station during the random access procedure according to the first receiving timing information comprises:
receiving, in the first time window, random access response information sent by the base station through a nearest physical downlink control channel occasion, wherein the first time window is a time window switching the first offset from the first receiving moment;
and/or
receiving the feedback information from the base station during the random access procedure according to the second receiving timing information comprises:
receiving, in the second time window, random access response information sent by the base station through a nearest physical downlink control channel occasion, wherein the second time window is a time window switching the second offset from the second receiving moment.
3 . The method according to claim 1 , wherein each of the first receiving moment and the second receiving moment is a moment that Msg1 or MsgA for the random access procedure is sent completely.
4 . The method according to claim 1 , wherein
the first offset is greater than the second offset,
and/or
the first length is smaller than the second length.
5 . The method according to claim 1 , wherein the first offset is equal to 2*d1/c, or equal to 2*(d1+d0_F)/c;
the second offset is equal to 2*d0/c, or equal to 2*(d0+d0_F)/c;
where, d1 is a distance from a network device in air to the terminal, d0 is a distance from the network device to a reference point on ground, d0_F is a distance from the network device to the base station on the ground, and c is a speed of light.
6 . The method according to claim 1 , wherein
the first receiving timing information comprises at least one of a third offset of a first contention resolution timer relative to a third receiving moment, or a first time duration of the first contention resolution timer;
and/or
the second receiving timing information comprises at least one of a fourth offset of a second contention resolution timer relative to a fourth receiving moment, or a second time duration of the second contention resolution timer;
wherein the third offset is different from the fourth offset, and/or the first time duration is different from the second time duration.
7 . The method according to claim 6 , wherein
receiving the feedback information from the base station during the random access procedure according to the first receiving timing information comprises: starting the first contention resolution timer in a time-domain symbol, wherein the time-domain symbol is a first time-domain symbol switching the third offset from the third receiving moment;
and/or
receiving the feedback information from the base station during the random access procedure according to the second receiving timing information comprises:
starting the second contention resolution timer in a time-domain symbol, wherein the time-domain symbol is a second time-domain symbol switching the fourth offset from the fourth receiving moment.
8 . The method according to claim 6 , wherein each of the third receiving moment and the fourth receiving moment is a moment that Msg3 for the random access procedure is sent completely.
9 . The method according to claim 6 , wherein
the third offset is greater than the fourth offset,
and/or
the first time duration is shorter than the second time duration.
10 . The method according to claim 6 , wherein the third offset is equal to 2*d1/c, or equal to 2*(d1+d0_F)/c;
the fourth offset is equal to 2*d0/c, or equal to 2*(d0+d0_F)/c;
where, d1 is a distance from a network device in air to the terminal, d0 is a distance from the network device to a reference point on ground, d0_F is a distance from the network device to the base station on the ground, and c is a speed of light.
11 . The method according to claim 1 , further comprising:
receiving indication information sent by the base station; wherein the indication information comprises the first receiving timing information and/or the second receiving timing information.
12 . The method according to claim 1 , further comprising:
receiving the feedback information from the base station during the random access procedure according to the first receiving timing information in response to the timing advance being determined by the terminal autonomously.
13 . The method according to claim 1 , further comprising:
receiving the feedback information from the base station during the random access procedure according to the second receiving timing information in response to the timing advance being determined by the terminal non-autonomously.
14 . A method for configuration indication, applied to a base station and comprising:
sending indication information comprising first receiving timing information and second receiving timing information to a terminal;
wherein the indication information is configured to indicate the terminal to in response to a timing advance being determined autonomously, receive feedback information from the base station during a random access procedure according to the first receiving timing information, and in response to the timing advance being determined non-autonomously, receive feedback information from the base station during the random access procedure according to the second receiving timing information;
wherein the first receiving timing information is different from the second receiving timing information;
wherein the first receiving timing information comprises at least one of a first offset of a first time window for receiving a random access response relative to a first receiving moment, or a first length of the first time window; and/or
the second receiving timing information comprises at least one of a second offset of a second time window for receiving a random access response relative to a second receiving moment, or a second length of the second time window; and
wherein the first offset is different from the second offset, and/or the first length is different from the second length.
15 . The method according to claim 14 , wherein each of the first receiving moment and the second receiving moment is a moment that Msg1 or MsgA for the random access procedure is sent completely.
16 . The method according to claim 14 , wherein the first offset is equal to 2*d1/c, or equal to 2*(d1+d0_F)/c;
the second offset is equal to 2*d0/c, or equal to 2*(d0+d0_F)/c;
where, d1 is a distance from a network device in air to the terminal, d0 is a distance from the network device to a reference point on ground, d0_F is a distance from the network device to the base station on the ground, and c is a speed of light.
17 . The method according to claim 14 , wherein the first receiving timing information comprises at least one of a third offset of a first contention resolution timer relative to a third receiving moment, or a first time duration of the contention resolution timer; and/or
the second receiving timing information comprises at least one of a fourth offset of a second contention resolution timer relative to a fourth receiving moment, or a second time duration of the second contention resolution timer;
wherein the third offset is different from the fourth offset, and/or the first time duration is different from the second time duration.
18 . A terminal, comprising:
a processor; and
a memory for storing instructions executable by the processor;
wherein the processor is configured to:
receive feedback information from a base station during a random access procedure according to at least one of first receiving timing information or second receiving timing information;
wherein the first receiving timing information and the second receiving timing information correspond to different manners for determining a timing advance by the terminal;
wherein the first receiving timing information is different from the second receiving timing information;
wherein the first receiving timing information comprises at least one of a first offset of a first time window for receiving a random access response relative to a first receiving moment, or a first length of the first time window; and/or
the second receiving timing information comprises at least one of a second offset of a second time window for receiving a random access response relative to a second receiving moment, or a second length of the second time window; and
wherein the first offset is different from the second offset, and/or the first length is different from the second length.