Method and device in wireless transmission

1. A method in a User Equipment (UE) in wireless transmission, comprising:

receiving a first signaling; and

receiving a first radio signal, the first radio signal carrying a first bit block;

wherein the first signaling is a physical layer signaling, the first signaling is used for determining a transmission format corresponding to the first radio signal, the first bit block is a Transport Block (TB), and the first bit block comprises a positive integer number of bits; the transmission format corresponding to the first radio signal is one transmission format in a first format set, and the first format set comprises a first transmission format and a second transmission format; a radio signal corresponding to the first transmission format comprises P radio sub-signal(s), each of the P radio sub-signal(s) carries the first bit block, each of the P radio sub-signal(s) is transmitted by a same antenna port group, and the P is a positive integer; a radio signal corresponding to the second transmission format comprises Q radio sub-signals, each of the Q radio sub-signals carries the first bit block, the Q radio sub-signals are transmitted by Q antenna port groups respectively, any two of the Q antenna port groups cannot be assumed to be same, time domain resources occupied by any two of the Q radio sub-signals are orthogonal, and the Q is an integer greater than 1; and the antenna port group comprises one or more antenna ports.

2. The method according to claim 1 , comprising:

receiving a second signaling;

wherein the second signaling is a high-layer signaling, the second signaling is used for determining the first format set, the first format set is one of K candidate format sets, and the K is a positive integer greater than 1.

3. The method according to claim 1 , wherein a time duration of time domain resources occupied by the first radio signal is unrelated to the transmission format corresponding to the first radio signal; and the P is greater than 1, and time domain resources occupied by any two of the P radio sub-signals are orthogonal.

4. The method according to claim 1 , comprising:

transmitting a third signaling;

wherein the third signaling is used for indicating whether the first radio signal is correctly received; a payload size of the first signaling is different for the first transmission format and the second transmission format.

5. The method according to claim 1 , comprising:

receiving a second radio signal, the second radio signal carrying the first bit block;

wherein a transmission format corresponding to the second radio signal is one transmission format in the first format set, and the transmission format corresponding to the second radio signal is different from the transmission format corresponding to the first radio signal.

6. A method in a base station in wireless transmission, comprising:

transmitting a first signaling; and

transmitting a first radio signal, the first radio signal carrying a first bit block;

wherein the first signaling is a physical layer signaling, the first signaling is used for determining a transmission format corresponding to the first radio signal, the first bit block is a Transport Block (TB), and the first bit block comprises a positive integer number of bits; the transmission format corresponding to the first radio signal is one transmission format in a first format set, and the first format set comprises a first transmission format and a second transmission format; a radio signal corresponding to the first transmission format comprises P radio sub-signal(s), each of the P radio sub-signal(s) carries the first bit block, each of the P radio sub-signal(s) is transmitted by a same antenna port group, and the P is a positive integer; a radio signal corresponding to the second transmission format comprises Q radio sub-signals, each of the Q radio sub-signals carries the first bit block, the Q radio sub-signals are transmitted by Q antenna port groups respectively, any two of the Q antenna port groups cannot be assumed to be same, time domain resources occupied by any two of the Q radio sub-signals are orthogonal, and the Q is an integer greater than 1; and the antenna port group comprises one or more antenna ports.

7. The method according to claim 6 , comprising:

transmitting a second signaling;

wherein the second signaling is a high-layer signaling, the second signaling is used for determining the first format set, the first format set is one of K candidate format sets, and the K is a positive integer greater than 1.

8. The method according to claim 6 , wherein a time duration of time domain resources occupied by the first radio signal is unrelated to the transmission format corresponding to the first radio signal; and the P is greater than 1, and time domain resources occupied by any two of the P radio sub-signals are orthogonal.

9. The method according to claim 6 , comprising:

receiving a third signaling;

wherein the third signaling is used for indicating whether the first radio signal is correctly received; and a payload size of the first signaling is different for the first transmission format and the second transmission format.

10. The method according to claim 6 , comprising:

transmitting a second radio signal, the second radio signal carrying the first bit block;

wherein a transmission format corresponding to the second radio signal is one transmission format in the first format set, and the transmission format corresponding to the second radio signal is different from the transmission format corresponding to the first radio signal.

11. A UE in wireless transmission, comprising:

a first receiver, to receive a first signaling; and

a second receiver, to receive a first radio signal, the first radio signal carrying a first bit block;

wherein the first signaling is a physical layer signaling, the first signaling is used for determining a transmission format corresponding to the first radio signal, the first bit block is a Transport Block (TB), and the first bit block comprises a positive integer number of bits; the transmission format corresponding to the first radio signal is one transmission format in a first format set, and the first format set comprises a first transmission format and a second transmission format; a radio signal corresponding to the first transmission format comprises P radio sub-signal(s), each of the P radio sub-signal(s) carries the first bit block, each of the P radio sub-signal(s) is transmitted by a same antenna port group, and the P is a positive integer; a radio signal corresponding to the second transmission format comprises Q radio sub-signals, each of the Q radio sub-signals carries the first bit block, the Q radio sub-signals are transmitted by Q antenna port groups respectively, any two of the Q antenna port groups cannot be assumed to be same, time domain resources occupied by any two of the Q radio sub-signals are orthogonal, and the Q is an integer greater than 1; and the antenna port group comprises one or more antenna ports.

12. The UE according to claim 11 , further comprising:

a first transmitter, to transmit a third signaling;

wherein the third signaling is used for indicating whether the first radio signal is correctly received; and a payload size of the first signaling is different for the first transmission format and the second transmission format.

13. The UE according to claim 11 , wherein the second receiver further receives a second signaling; wherein the second signaling is a high-layer signaling, the second signaling is used for determining the first format set, the first format set is one of K candidate format sets, and the K is a positive integer greater than 1.

14. The UE according to claim 11 , wherein a time duration of time domain resources occupied by the first radio signal is unrelated to the transmission format corresponding to the first radio signal; and the P is greater than 1, and time domain resources occupied by any two of the P radio sub-signals are orthogonal.

15. The UE according to claim 11 , wherein the second receiver further receives a second radio signal, the second radio signal carrying the first bit block; wherein a transmission format corresponding to the second radio signal is one transmission format in the first format set, and the transmission format corresponding to the second radio signal is different from the transmission format corresponding to the first radio signal.

16. A base station in wireless transmission, comprising:

a second transmitter, to transmit a first signaling; and

a third transmitter, to transmit a first radio signal, the first radio signal carrying a first bit block;

wherein the first signaling is a physical layer signaling, the first signaling is used for determining a transmission format corresponding to the first radio signal, the first bit block is a Transport Block (TB), and the first bit block comprises a positive integer number of bits; the transmission format corresponding to the first radio signal is one transmission format in a first format set, and the first format set comprises a first transmission format and a second transmission format; a radio signal corresponding to the first transmission format comprises P radio sub-signal(s), each of the P radio sub-signal(s) carries the first bit block, each of the P radio sub-signal(s) is transmitted by a same antenna port group, and the P is a positive integer; a radio signal corresponding to the second transmission format comprises Q radio sub-signals, each of the Q radio sub-signals carries the first bit block, the Q radio sub-signals are transmitted by Q antenna port groups respectively, any two of the Q antenna port groups cannot be assumed to be same, time domain resources occupied by any two of the Q radio sub-signals are orthogonal, and the Q is an integer greater than 1; and the antenna port group comprises one or more antenna ports.

17. The base station according to claim 16 , comprising:

a third receiver, to receive a third signaling;

wherein the third signaling is used for indicating whether the first radio signal is correctly received; and a payload size of the first signaling is different for the first transmission format and the second transmission format.

18. The base station according to claim 16 , wherein the third transmitter further transmits a second signaling; wherein the second signaling is a high-layer signaling, the second signaling is used for determining the first format set, the first format set is one of K candidate format sets, and the K is a positive integer greater than 1.

19. The base station according to claim 16 , wherein a time duration of time domain resources occupied by the first radio signal is unrelated to the transmission format corresponding to the first radio signal; and the P is greater than 1, and time domain resources occupied by any two of the P radio sub-signals are orthogonal.

20. The base station according to claim 16 , wherein the third transmitter further transmits a second radio signal, the second radio signal carrying the first bit block; wherein a transmission format corresponding to the second radio signal is one transmission format in the first format set, and the transmission format corresponding to the second radio signal is different from the transmission format corresponding to the first radio signal.