METHOD AND DEVICE IN NODES USED FOR WIRELESS COMMUNICATION
The present application provides a method and device in a node for wireless communications. A first transmitter transmits a first preamble in a first PRACH occasion; a first receiver receives a first signaling, and the first signaling adopts a first RNTI; wherein the first signaling is used to respond to a transmission of the first preamble; a first time-domain symbol is an earliest time-domain symbol of the first PRACH occasion; an index of a reference time-domain symbol and an index of a reference slot are both used to determine the first RNTI, the reference time-domain symbol is a time-domain symbol other than the first time-domain symbol, and the reference time-domain symbol belongs to the reference slot; a time-domain position of the reference time-domain symbol is related to at least one of the first PRACH occasion or the first preamble.
1 . A first node for wireless communications, comprising:
a first transmitter, transmitting a first preamble in a first PRACH (Physical random access channel) occasion; and
a first receiver, receiving a first signaling, the first signaling adopting a first RNTI (Radio Network Temporary Identifier);
wherein the first signaling is used to respond to a transmission of the first preamble; a first time-domain symbol is an earliest time-domain symbol of the first PRACH occasion; an index of a reference time-domain symbol and an index of a reference slot are both used to determine the first RNTI, the reference time-domain symbol is a time-domain symbol other than the first time-domain symbol, and the reference time-domain symbol belongs to the reference slot; a time-domain position of the reference time-domain symbol is related to at least one of the first PRACH occasion or the first preamble.
2 . The first node according to claim 1 , wherein the reference time-domain symbol is an earliest time-domain symbol of a first reference PRACH occasion, time-domain resources of the first PRACH occasion are earlier than time-domain resources of the first reference PRACH occasion, and the first RNTI is an RA-RNTI.
3 . The first node according to claim 2 , wherein the first RNTI=1+s+14×t+14×80×f+14×80×8×ul_carrier; wherein s denotes the index of the reference time-domain symbol, t denotes the index of the reference slot, f is an index of the first reference PRACH occasion in frequency domain, and ul_carrier denotes a UL (uplink) carrier used to transmit the first preamble.
4 . The first node according to claim 3 , wherein the first PRACH occasion and the first reference PRACH occasion are both associated with a same SS/PBCH (Synchronization Signal/physical broadcast channel) block index.
5 . The first node according to claim 3 , wherein the first PRACH occasion and the first reference PRACH occasion do not overlap in time domain.
6 . The first node according to claim 1 , wherein a second reference PRACH occasion does not overlap with the first reference PRACH occasion in time domain, the second reference PRACH occasion is used to determine a first time window, the first time window is an RAR (Random Access Response) time window for the first preamble, and the first signaling is detected in the first time window.
7 . The first node according to claim 1 , comprising:
the first receiver, receiving first information;
wherein a first PRACH occasion pool comprises multiple PRACH occasions, a first PRACH occasion group comprises multiple PRACH occasions, and all PRACH occasions in the first PRACH occasion group belong to the first PRACH occasion pool; the first PRACH occasion belongs to the first PRACH occasion group, each PRACH occasion in the first PRACH occasion group is used to transmit a repetition of the first preamble, and the first information is used to determine the first PRACH occasion group from the first PRACH occasion pool.
8 . A second node for wireless communications, comprising:
a second receiver, receiving a first preamble in a first PRACH occasion; and
a second transmitter, transmitting a first signaling, the first signaling adopting a first RNTI;
wherein the first signaling is used to respond to a transmission of the first preamble; a first time-domain symbol is an earliest time-domain symbol of the first PRACH occasion; an index of a reference time-domain symbol and an index of a reference slot are both used to determine the first RNTI, the reference time-domain symbol is a time-domain symbol other than the first time-domain symbol, and the reference time-domain symbol belongs to the reference slot; a time-domain position of the reference time-domain symbol is related to at least one of the first PRACH occasion or the first preamble.
9 . The second node according to claim 8 , wherein the reference time-domain symbol is an earliest time-domain symbol of a first reference PRACH occasion, time-domain resources of the first PRACH occasion are earlier than time-domain resources of the first reference PRACH occasion, and the first RNTI is an RA-RNTI.
10 . The second node according to claim 9 , wherein the first RNTI=1+s+14×t+14×80×f+14×80×8×ul_carrier; wherein s denotes the index of the reference time-domain symbol, t denotes the index of the reference slot, f is an index of the first reference PRACH occasion in frequency domain, and ul_carrier denotes a UL carrier used to transmit the first preamble.
11 . The second node according to claim 10 , wherein the first PRACH occasion and the first reference PRACH occasion are both associated with a same SS/PBCH block index.
12 . The second node according to claim 10 , wherein the first PRACH occasion and the first reference PRACH occasion do not overlap in time domain.
13 . The second node according to claim 8 , wherein a second reference PRACH occasion does not overlap with the first reference PRACH occasion in time domain, the second reference PRACH occasion is used to determine a first time window, the first time window is an RAR time window for the first preamble, and the first signaling is detected in the first time window.
14 . A method in a first node for wireless communications, comprising:
transmitting a first preamble in a first PRACH occasion; and
receiving a first signaling, the first signaling adopting a first RNTI;
wherein the first signaling is used to respond to a transmission of the first preamble; a first time-domain symbol is an earliest time-domain symbol of the first PRACH occasion; an index of a reference time-domain symbol and an index of a reference slot are both used to determine the first RNTI, the reference time-domain symbol is a time-domain symbol other than the first time-domain symbol, and the reference time-domain symbol belongs to the reference slot; a time-domain position of the reference time-domain symbol is related to at least one of the first PRACH occasion or the first preamble.
15 . The method in a first node according to claim 14 , wherein the reference time-domain symbol is an earliest time-domain symbol of a first reference PRACH occasion, time-domain resources of the first PRACH occasion are earlier than time-domain resources of the first reference PRACH occasion, and the first RNTI is an RA-RNTI.
16 . The method in a first node according to claim 15 , wherein the first RNTI=1+s+14×t+14×80×f+14×80×8×ul_carrier; wherein s denotes the index of the reference time-domain symbol, t denotes the index of the reference slot, f is an index of the first reference PRACH occasion in frequency domain, and ul_carrier denotes a UL carrier used to transmit the first preamble.
17 . The method in a first node according to claim 16 , wherein the first PRACH occasion and the first reference PRACH occasion are both associated with a same SS/PBCH block index.
18 . The method in a first node according to claim 16 , wherein the first PRACH occasion and the first reference PRACH occasion do not overlap in time domain.
19 . The method in a first node according to claim 14 , wherein a second reference PRACH occasion does not overlap with the first reference PRACH occasion in time domain, the second reference PRACH occasion is used to determine a first time window, the first time window is an RAR time window for the first preamble, and the first signaling is detected in the first time window.
20 . The method in a first node according to claim 14 , comprising:
receiving first information;
wherein a first PRACH occasion pool comprises multiple PRACH occasions, a first PRACH occasion group comprises multiple PRACH occasions, and all PRACH occasions in the first PRACH occasion group belong to the first PRACH occasion pool; the first PRACH occasion belongs to the first PRACH occasion group, each PRACH occasion in the first PRACH occasion group is used to transmit a repetition of the first preamble, and the first information is used to determine the first PRACH occasion group from the first PRACH occasion pool.