Methods and apparatuses for selecting the best transmit beams

1. A method performed by a user equipment (UE) for selecting one or more transmit (TX) beams to identify in a beam report, wherein the UE comprises a plurality of antenna arrangements, including a first antenna arrangement and a second antenna arrangement, the method comprising:

the UE obtaining a first interference value, Ia, associated with the first antenna arrangement;

the UE obtaining a second interference value, Ib, associated with the second antenna arrangement;

the UE obtaining a power value, P 1 a , associated with the first antenna arrangement and with a first TRP TX beam;

the UE obtaining a power value, P 1 b , associated with the second antenna arrangement and with the first TRP TX beam;

the UE determining a first final power value, Pn 1 , based on Ia and Ib and based on at least one of P 1 a , and P 1 b ; and

the UE using Pn 1 to determine whether or not to include in the beam report an identifier for identifying the first TRP TX beam, wherein

determining the first final power value comprises calculating: Pn 1 =(wa)(P 1 a )+(wb)(P 1 b ), wherein wa is a function of at least Ia and wb is a function of at least Ib, or

determining the first final power value comprises calculating: Pn 1 =P 1 a +wP 1 b , wherein w=Ia/Ib.

2. The method of claim 1 , wherein determining the first final power value comprises:

determining whether Ia is much greater than Ib; and

as a result of determining that Ia is much greater than Ib, setting Pn 1 equal to P 1 b.

3. The method of claim 1 , wherein

obtaining P 1 a comprises the UE receiving, via the first antenna arrangement, a reference signal transmitted by a TRP, wherein the TRP used the first TRP TX beam to transmit the reference signal.

4. The method claim 1 , further comprising:

the UE obtaining a power value, P 2 a , associated with the first antenna arrangement and with a second TRP TX beam;

the UE obtaining a power value, P 2 b , associated with the second antenna arrangement and with the second TRP TX beam; and

the UE determining a second final power value, Pn 2 , based on Ia and Ib and based on at least one of P 2 a , and P 2 b.

5. The method of claim 4 , wherein using Pn 1 to determine whether or not to include in the beam report the identifier for identifying the first TRP TX beam comprises determining whether Pn 1 is greater than Pn 2 .

6. The method of claim 5 , further comprising including in the beam report the identifier for identifying the first TRP TX beam as a result of determining that Pn 1 is greater than each final power value included in a set of final power values, wherein the set of final power values comprises Pn 2 .

7. The method of claim 6 , further comprising including in the beam report a Reference Signal Received Power (RSRP) value corresponding to the identifier for identifying the first TRP TX beam, wherein the RSRP value is equal to Pn 1 .

8. The method claim 1 , wherein the first antenna arrangement comprises: i) a single antenna or ii) a plurality of antennas.

9. The method claim 1 , wherein

obtaining the first interference value comprises: i) obtaining a first inter-cell interference value or ii) obtaining a first intra-cell interference value, and

obtaining the second interference value comprises: i) obtaining a second inter-cell interference value or ii) obtaining a second intra-cell interference value.

10. The method of claim 9 , wherein

obtaining the first interference value comprises calculating the first interference value using the first inter-cell interference value and the first intra-cell interference value, and

obtaining the second interference value comprises calculating the second interference value using the second inter-cell interference value and the second intra-cell interference value.

11. A computer program product comprising a non-transitory computer readable medium storing a computer program comprising instructions which when executed by processing circuitry causes the processing circuitry to perform the method claim 1 .

12. A user equipment (UE), the UE comprising:

a first antenna arrangement;

a second antenna arrangement;

processing circuitry coupled to the first and second antenna arrangements, wherein the UE is adapted to:

obtain a first interference value, Ia, associated with the first antenna arrangement of the UE;

obtain a second interference value, Ib, associated with the second antenna arrangement of the UE;

obtain a power value, P 1 a , associated with the first antenna arrangement and with a first TRP TX beam;

obtain a power value, P 1 b , associated with the second antenna arrangement and with the first TRP TX beam;

determine a first final power value, Pn 1 , based on Ia and Ib and based on at least one of P 1 a , and P 1 b ; and

use Pn 1 to determine whether or not to include in a beam report an identifier for identifying the first TRP TX beam, wherein

the UE is adapted to determine the first final power value by calculating: Pn 1 =(wa)(P 1 a )+(wb)(P 1 b ), wherein wa is a function of at least Ia and wb is a function of at least Ib, or

the UE is adapted to determine the first final power value by calculating: Pn 1 =P 1 a +wP 1 b , wherein w=Ia/Ib.