Method and device for multi-antenna transmission in UE and base station

1. A method in a User Equipment (UE) for multi-antenna transmission, comprising:

receiving a first higher-layer signaling;

monitoring a first-type physical layer signaling in a first radio resource pool; and

receiving second downlink information in a second radio resource pool;

wherein the first higher-layer signaling is used, by the UE, for determining first information and second information, and the first information is used, by the UE, for multi-antenna related receiving in the first radio resource pool; wherein when the first-type physical layer signaling is detected by the UE, the first-type physical layer signaling is used, by the UE, for multi-antenna related receiving in the second radio resource pool, and when the first-type physical layer signaling is not detected by the UE, the second information is used, by the UE, for multi-antenna related receiving in the second radio resource pool; and the second radio resource pool is related to the first radio resource pool.

2. The method according to claim 1 , wherein the first information is used, by the UE, for determining at least one of a first antenna port group or a first vector group, the second information is used, by the UE, for determining at least one of a second antenna port group or a second vector group, the first antenna port group and the second antenna port group each comprise a positive integer number of antenna port(s), the first vector group and the second vector group each comprise a positive integer number of vector(s);

or, the first-type physical layer signaling is used, by the UE, for determining at least one of a third antenna port group or a third vector group, the third antenna port group comprises a positive integer number of antenna port(s), and the third vector group comprises a positive integer number of vector(s).

3. The method according to claim 1 , wherein the first higher-layer signaling is further used, by the UE, for determining the first radio resource pool and a second radio resource set, the first radio resource pool and the second radio resource set are orthogonal in time domain or frequency domain, and radio resources in the second radio resource pool are in the second radio resource set; wherein when the first-type physical layer signaling is not detected by the UE, the second information is used, by the UE, for multi-antenna related receiving in the second radio resource set, and when the first-type physical layer signaling is detected by the UE, the second information is used, by the UE, for multi-antenna related receiving in the second radio resource set other than the second radio resource pool.

4. The method according to claim 1 , wherein the second downlink information comprises a second physical layer signaling; the second physical layer signaling lacks a first field compared with the first-type physical layer signaling, the first field in the first-type physical layer signaling is used, by the UE, for multi-antenna related receiving in the second radio resource pool; the first-type physical layer signaling and the second physical layer signaling correspond to a same signaling format; and the first field comprises a positive integer number of information bit(s).

5. The method according to claim 1 , wherein the UE assumes that all physical layer signalings received in the second radio resource pool lack a first field compared with the first-type physical layer signaling, the first field in the first-type physical layer signaling is used, by the UE, for multi-antenna related receiving in the second radio resource pool, and the first field comprises a positive integer number of information bit(s).

6. A method in a base station for multi-antenna transmission, comprising:

transmitting a first higher-layer signaling;

transmitting a first-type physical layer signaling in a first radio resource pool; and

transmitting second downlink information in a second radio resource pool;

wherein the first higher-layer signaling is used, by a receiving site, for determining first information and second information, and the first information is used, by the receiving site, for multi-antenna related receiving in the first radio resource pool; wherein when the first-type physical layer signaling is detected by the receiving site, the first-type physical layer signaling is used, by the receiving site, for multi-antenna related receiving in the second radio resource pool, and when the first-type physical layer signaling is not detected by the receiving site, the second information is used, by the receiving site, for multi-antenna related receiving in the second radio resource pool; and the second radio resource pool is related to the first radio resource pool.

7. The method according to claim 6 , wherein the first information is used, by the receiving site, for determining at least one of a first antenna port group or a first vector group, the second information is used, by the receiving site, for determining at least one of a second antenna port group or a second vector group, the first antenna port group and the second antenna port group each comprise a positive integer number of antenna port(s), the first vector group and the second vector group each comprise a positive integer number of vector(s);

or, the first-type physical layer signaling is used, by the receiving site, for determining at least one of a third antenna port group or a third vector group, the third antenna port group comprises a positive integer number of antenna port(s), and the third vector group comprises a positive integer number of vector(s).

8. The method according to claim 6 , wherein the first higher-layer signaling is further used, by the receiving site, for determining the first radio resource pool and a second radio resource set, the first radio resource pool and the second radio resource set are orthogonal in time domain or frequency domain, and radio resources in the second radio resource pool are in the second radio resource set; wherein when the first-type physical layer signaling is not detected by the receiving site, the second information is used, by the receiving site, for multi-antenna related receiving in the second radio resource set, and when the first-type physical layer signaling is detected by the receiving site, the second information is used, by the receiving site, for multi-antenna related receiving in the second radio resource set other than the second radio resource pool.

9. The method according to claim 6 , wherein the second downlink information comprises a second physical layer signaling; the second physical layer signaling lacks a first field compared with the first-type physical layer signaling, the first field in the first-type physical layer signaling is used, by the receiving site, for multi-antenna related receiving in the second radio resource pool; the first-type physical layer signaling and the second physical layer signaling correspond to a same signaling format; and the first field comprises a positive integer number of information bit(s).

10. The method according to claim 6 , wherein all physical layer signalings transmitted in the second radio resource pool lack a first field compared with the first-type physical layer signaling, the first field in the first-type physical layer signaling is used, by the receiving site, for multi-antenna related receiving in the second radio resource pool, and the first field comprises a positive integer number of information bit(s).

11. A UE for multi-antenna transmission, comprising:

a first receiver, to receive a first higher-layer signaling;

a second receiver, to monitor a first-type physical layer signaling in a first radio resource pool; and

a third receiver, to receive second downlink information in a second radio resource pool;

wherein the first higher-layer signaling is used, by the UE, for determining first information and second information, and the first information is used, by the UE, for multi-antenna related receiving in the first radio resource pool; wherein when the first-type physical layer signaling is detected by the UE, the first-type physical layer signaling is used, by the UE, for multi-antenna related receiving in the second radio resource pool, and when the first-type physical layer signaling is not detected by the UE, and the second information is used, by the UE, for multi-antenna related receiving in the second radio resource pool; and the second radio resource pool is related to the first radio resource pool.

12. The UE according to claim 11 , wherein the first information is used, by the UE, for determining at least one of a first antenna port group or a first vector group, the second information is used, by the UE, for determining at least one of a second antenna port group or a second vector group, the first antenna port group and the second antenna port group each comprise a positive integer number of antenna port(s), the first vector group and the second vector group each comprise a positive integer number of vector(s);

or, the first-type physical layer signaling is used, by the UE, for determining at least one of a third antenna port group or a third vector group, the third antenna port group comprises a positive integer number of antenna port(s), and the third vector group comprises a positive integer number of vector(s).

13. The UE according to claim 11 , wherein the first higher-layer signaling is further used, by the UE, for determining the first radio resource pool and a second radio resource set, the first radio resource pool and the second radio resource set are orthogonal in time domain or frequency domain, and radio resources in the second radio resource pool are in the second radio resource set; wherein when the first-type physical layer signaling is not detected by the UE, the second information is used, by the UE, for multi-antenna related receiving in the second radio resource set, and when the first-type physical layer signaling is detected by the UE, the second information is used, by the UE, for multi-antenna related receiving in the second radio resource set other than the second radio resource pool.

14. The UE according to claim 11 , wherein the second downlink information comprises a second physical layer signaling; the second physical layer signaling lacks a first field compared with the first-type physical layer signaling, the first field in the first-type physical layer signaling is used, by the UE, for multi-antenna related receiving in the second radio resource pool; the first-type physical layer signaling and the second physical layer signaling correspond to a same signaling format; and the first field comprises a positive integer number of information bit(s).

15. The UE according to claim 11 , wherein the UE assumes that all physical layer signalings received in the second radio resource pool lack a first field compared with the first-type physical layer signaling, the first field in the first-type physical layer signaling is used, by the UE, for multi-antenna related receiving in the second radio resource pool, and the first field comprises a positive integer number of information bit(s).

16. A base station for multi-antenna transmission, comprising:

a first transmitter, to transmit a first higher-layer signaling;

a second transmitter, to transmit a first-type physical layer signaling in a first radio resource pool; and

a third transmitter, to transmit second downlink information in a second radio resource pool; wherein the first higher-layer signaling is used, by a receiving site, for determining first information and second information, and the first information is used, by the receiving site, for multi-antenna related receiving in the first radio resource pool; wherein when the first-type physical layer signaling is detected by the receiving site, the first-type physical layer signaling is used, by the receiving site, for multi-antenna related receiving in the second radio resource pool, and when the first-type physical layer signaling is not detected by the receiving site, the second information is used, by the receiving site, for multi-antenna related receiving in the second radio resource pool; and the second radio resource pool is related to the first radio resource pool.

17. The base station according to claim 16 , wherein the first information is used, by the receiving site, for determining at least one of a first antenna port group or a first vector group, the second information is used, by the receiving site, for determining at least one of a second antenna port group or a second vector group, the first antenna port group and the second antenna port group each comprise a positive integer number of antenna port(s), the first vector group and the second vector group each comprise a positive integer number of vector(s);

or, the first-type physical layer signaling is used, by the receiving site, for determining at least one of a third antenna port group or a third vector group, the third antenna port group comprises a positive integer number of antenna port(s), and the third vector group comprises a positive integer number of vector(s).

18. The base station according to claim 16 , wherein the first higher-layer signaling is further used, by the receiving site, for determining the first radio resource pool and a second radio resource set, the first radio resource pool and the second radio resource set are orthogonal in time domain or frequency domain, and radio resources in the second radio resource pool are in the second radio resource set; wherein when the first-type physical layer signaling is not detected by the receiving site, the second information is used, by the receiving site for multi-antenna related receiving in the second radio resource set, and when the first-type physical layer signaling is detected by the receiving site, the second information is used, by the receiving site, for multi-antenna related receiving in the second radio resource set other than the second radio resource pool.

19. The base station according to claim 16 , wherein the second downlink information comprises a second physical layer signaling; the second physical layer signaling lacks a first field compared with the first-type physical layer signaling, the first field in the first-type physical layer signaling is used, by the receiving site, for multi-antenna related receiving in the second radio resource pool; the first-type physical layer signaling and the second physical layer signaling correspond to a same signaling format; and the first field comprises a positive integer number of information bit(s).

20. The base station according to claim 16 , wherein all physical layer signalings transmitted in the second radio resource pool lack a first field compared with the first-type physical layer signaling, the first field in the first-type physical layer signaling is used, by the receiving site, for multi-antenna related receiving in the second radio resource pool, and the first field comprises a positive integer number of information bit(s).