Method and device used for relay wireless communication
The present application provides a method and device for sidelink wireless communications. A first node receives a first signaling via an air interface; as a response to receiving the first signaling, transmits a first radio signal, the first radio signal comprises a second signaling; receives a second data unit set via an air interface; herein, the second signaling indicates that a first data unit set is not received, and both the first data unit set and the second data unit set are transmitted through a first radio bearer; the second signaling is used to determine the second data unit set; a transmitter of the first signaling is non-co-located with a receiver of the first radio signal; the first data unit set comprises at least one data unit; the second data unit set comprises the first data unit set. The present application can effectively reduce data retransmission.
1 . A user equipment (UE) for wireless communications, the UE comprising:
a transceiver; and
a processor, wherein the transceiver and the processor are configured to:
determine, based on first and second reference data volumes, a buffer size for a first logical channel set,
determine that a difference value between the buffer size for the first logical channel set and a first reference buffer size exceeds a first threshold,
generate a first Buffer Status Report (BSR), wherein the first reference buffer size is associated with a second BSR, and wherein the second BSR is a latest BSR reported for the first logical channel set or the second BSR is a latest BSR triggered for the first logical channel set,
transmit a first radio signal carrying the first BSR,
receive a first data unit set through a first channel set,
transmit a second data unit set through a second channel set, wherein any bit in the second data unit set belongs to the first data unit set, and any data unit in the second data unit set is mapped into a logical channel in the first logical channel set.
2 . The UE according to claim 1 ,
wherein the first reference data volume is related to a number of bytes comprised in the first data unit set, and the second reference data volume is related to a number of bytes comprised in the second data unit set.
3 . The UE according to claim 2 , wherein the first reference data volume is associated with a buffer size for a second logical channel set in the first data unit set, and
wherein any logical channel in the second logical channel set is mapped into a logical channel in the first logical channel set.
4 . The UE according to claim 2 , wherein the first reference data volume is related to a number of bytes comprised in a third data unit set, and
wherein the third data unit set comprises a data unit comprised in a first buffer set in the first data unit set, and wherein any data unit in the third data unit set is mapped into a logical channel in the first logical channel set.
5 . The UE according to claim 1 , wherein the first reference buffer size is related to a number of bytes comprised in a fourth data unit set, and the fourth data unit set comprises a part being transmitted after triggering the second BSR in the second data unit set.
6 . The UE according to claim 1 , wherein the transceiver and the processor are further configured to:
determine a first link failure,
clear a fifth data unit set, wherein any bit in the fifth data unit set belongs to the first data unit set and does not belong to the second data unit set, and wherein the first reference buffer size is associated with a number of bytes comprised in the fifth data unit set.
7 . The UE according to claim 1 , wherein the first reference buffer size is a second buffer size, and the second BSR is the second buffer size generated for triggering a BSR.
8 . The UE according to claim 1 , wherein the first reference buffer size is a maximum value of a buffer size indicated by the second BSR.
9 . The UE according to claim 1 , wherein the first reference buffer size is a minimum value of a buffer size indicated by the second BSR.
10 . The UE according to claim 1 , wherein the first reference buffer size is an average value of a maximum value of a buffer size indicated by the second BSR and a minimum value of a buffer size indicated by the second BSR.
11 . A method in a user equipment (UE) for wireless communications, the method comprising:
determining, based on first and second reference data volumes, a buffer size for a first logical channel set;
determining that a difference value between the buffer size for the first logical channel set and a first reference buffer size exceeds a first threshold;
generating a first Buffer Status Report (BSR), wherein the first reference buffer size is associated with a second BSR, and wherein the second BSR is a latest BSR reported for the first logical channel set or the second BSR is a latest BSR triggered for the first logical channel set;
transmitting a first radio signal carrying the first BSR;
receiving a first data unit set through a first channel set; and
transmitting a second data unit set through a second channel set, wherein any bit in the second data unit set belongs to the first data unit set, and any data unit in the second data unit set is mapped into a logical channel in the first logical channel set.
12 . The method in the UE according to claim 11 ,
wherein the first reference data volume is related to a number of bytes comprised in the first data unit set, and the second reference data volume is related to a number of bytes comprised in the second data unit set.
13 . The method in the UE according to claim 12 , wherein the first reference data volume is associated with buffer size for a second logical channel set in the first data unit set, and
wherein any logical channel in the second logical channel set is mapped into a logical channel in the first logical channel set.
14 . The method in the UE according to claim 12 , wherein the first reference data volume is related to a number of bytes comprised in a third data unit set, and
wherein the third data unit set comprises a data unit comprised in a first buffer set in the first data unit set, and wherein any data unit in the third data unit set is mapped into a logical channel in the first logical channel set.
15 . The method in the UE according to claim 11 , wherein the first reference buffer size is related to a number of bytes comprised in a fourth data unit set, and the fourth data unit set comprises a part being transmitted after triggering the second BSR in the second data unit set.
16 . The method in the UE according to claim 11 , further comprising:
determining a first link failure; and
clearing a fifth data unit set comprising at least one data unit, wherein any bit in the fifth data unit set belongs to the first data unit set and does not belong to the second data unit set, and wherein the first reference buffer size is associated with a number of bytes comprised in the fifth data unit set.
17 . The method in the UE according to claim 11 , wherein the first reference buffer size is a second buffer size, and the second BSR is the second buffer size generated for triggering a BSR.
18 . The method in the UE according to claim 11 , wherein the first reference buffer size is a maximum value of a buffer size indicated by the second BSR.
19 . The method in the UE according to claim 11 , wherein the first reference buffer size is a minimum value of a buffer size indicated by the second BSR.
20 . The method in the UE according to claim 11 , wherein the first reference buffer size is an average value of a maximum value of a buffer size indicated by the second BSR and a minimum value of a buffer size indicated by the second BSR.