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Title:
SYNCHRONIZATION SIGNAL BLOCK (SSB) MEASUREMENT ACCURACY TESTING
Document Type and Number:
WIPO Patent Application WO/2020/205552
Kind Code:
A4
Abstract:
In a general aspect, a user equipment (UE) in a cellular communications network receives a first Synchronization Signal Block (SSB) corresponding to a first cell of the cellular communications network, and a second SSB corresponding to a second cell of the cellular communications network. The UE clarifies a first cell identifier (ID) of the first cell. The UE clarifies a second cell ID of the second cell. The UE determines an SSB measurement accuracy value using the first cell ID and the second cell ID.

Inventors:
LI HUA (US)
TANG YANG (US)
CUI JIE (US)
LI QIMING (US)
YU ZHIBIN (US)
Application Number:
PCT/US2020/025316
Publication Date:
December 10, 2020
Filing Date:
March 27, 2020
Export Citation:
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Assignee:
APPLE INC (US)
International Classes:
H04J11/00; H04W36/14
Attorney, Agent or Firm:
COX, Michael E. et al. (US)
Download PDF:
Claims:
AMENDED CLAIMS

received by the International Bureau on 20 October 2020 (20.10.2020)

1. A method comprising:

receiving, at a user equipment (HE) for a cellular communications network, a first Synchronization Signal Block (SSB) corresponding to a first cell of the cellular

communications network, and a second SSB corresponding to a second cell of the cellular communications network;

clarifying, by the UE, a first cell identifier (ID) of the first cell, wherein the clarifying comprises determining the first cell ID using one or more of a Primary Synchronization Signal (PSS) or a Secondary Synchronization Signal (SSS) associated with a first base station corresponding to the first cell,

clarifying, by the UE, a second cell ID of the second cell, wherein the clarifying comprises determining the second cell ID using one or more of a Primary Synchronization Signal (PSS) or a Secondary' Synchronization Signal (SSS) associated with a second base station corresponding to the second cell; and

determining, by the LIE using the first cell ID and the second cell ID, an SSB measurement accuracy value, wherein the determining comprises:

measuring a first Reference Signal Received Pow-er (RSRP) for the first cell and a second RSRP for the second cell,

correlating the first RSRP to the first cell using the first cell ID and the second RSRP to the second cell using the second cell ID, and

modifying a value of at least one of the first RSRP or the second RSRP in response to correlating the first RSRP to the first cell and the second RSRP to the second cell.

2. The method of claim 1, wherein the first base station includes one of an evolved NodeB (eNB) or a Next Generation NodeB (gNB), and

wherein the second base station includes one of an eNB or a gNB.

3. The method of claim l, wherein receiving the first SSB comprises receiving a first New Radio Secondary Synchronization Signal (NR-SSS) corresponding to the first cell, and wherein receiving the second SSB comprises receiving a second NR-SSS

corresponding to the second cell.

4. The method of claim l, further comprising:

determining, by the UE, whether to connect to the first cell or the second cell based on the SSB measurement accuracy value.

5. A method comprising:

receiving, at a user equipment (UE) for a cellular communications network, a first signal corresponding to a first cell of the cellular communications network, the first signal included in a first portion of a S SB-based Measurement Timing Configuration (SMTC) window;

receiving, at the UE, a second signal corresponding to a second cell of the cellular communications network, the second signal being time division multiplexed (TDM) with the first signal, wherein the second signal is included in a second portion of the SMTC window that does not overlap in time with the first portion of the SMTC window;

determining, by the UE, a first Reference Signal Received Power (RSRP) for the first cell using the first signal; and

determining, by the UE, a second RSRP for the second ceil using the second signal.

6. The method of claim 5, wherein receiving the first signal comprises receiving a New Radio Secondary Synchronization Signal (NR-SSS) in the SMTC window

7. The method of claim 5, wherein receiving the second signal comprises receiving a NR-SSS in the SMTC window .

8. The method of claim 5, wherein receiving the first signal comprises obtaining a first Synchronization Signal Block (SSB) corresponding to the first cell from the first signal, and wherein determining the first RSRP for the first cell comprises determining an SSB- based RSRP for the first cell.

9. The method of claim 5, wherein receiving the second signal comprises obtaining a second SSB corresponding to the second cell from the second signal, and

wherein determining the second RSRP for the second ceil comprises determining an

S SB-based RSRP for the second cell.

10. The method of claim 5, wherein determining the first RSRP and the second RSRP comprises determining the first RSRP and the second RSRP independent of one another.

11. The method of claim 5, further comprising:

determining, by the UE, whether to connect to the first cell or the second cell based on the first RSRP and the second RSRP.

12. One or more non-transitory computer-readable media storing instructions that, when executed by one or more processors, are configured to cause the one or more processors to perform operations comprising:

receiving, at a user equipment (UE) for a cellular communications network, a first Synchronization Signal Block (SSB) corresponding to a first cell of the cellular

communications network, and a second SSB corresponding to a second cell of the cellular communi cati on s n etwork;

clarifying, by the UE, a first cell identifier (ID) of the first cell, wherein the clarifying comprises determining the first cell ID using one or more of a Primary Synchronization Signal (PSS) or a Secondary' Synchronization Signal (SSS) associated with a first base station corresponding to the first cell,

clarifying, by the UE, a second cell ID of the second cell, wiierein the clarifying comprises determining the second cell ID using one or more of a Primary Synchronization Signal (PSS) or a Secondary Synchronization Signal (SSS) associated with a second base station corresponding to the second cell; and

determining, by the UE using the first cell ID and the second cell ID, an SSB measurement accuracy value, wherein the determining comprises:

measuring a first Reference Signal Received Power (RSRP) for the first cell and a second RSRP for the second cell,

correlating the first RSRP to the first cell using the first cell ID and the second RSRP to the second cell using the second ceil ID, and

modifying a value of at least one of the first RSRP or the second RSRP in response to correlating the first RSRP to the first cell and the second RSRP to the second cell.

13. The one or more non-transitory computer-readable media of claim 12, wherein the first base station includes one of an evolved NodeB (eNB) or a Next Generation NodeB (gNB), and

wherein the second base station includes one of an eNB or a gNB.

14. The one or more non-transitory computer-readable media of claim 12, wherein receiving the first SSB comprises receiving a first New Radio Secondary Synchronization Signal (NR-SSS) corresponding to the first cell, and

wherein receiving the second SSB comprises receiving a second NR-SSS

corresponding to the second cell.

15. One or more non-transitory computer-readable media storing instructions that, when executed by one or more processors, are configured to cause the one or more processors to perform operations comprising:

receiving, at a user equipment (UE) for a cellular communications network, a first signal corresponding to a first cell of the cellular communications network, the first signal included in a first portion of a SSB-based Measurement Timing Configuration (SMTC) window;

receiving, at the UE, a second signal corresponding to a second cell of the cellular communications network, the second signal being time division multiplexed (TDM) with the first signal, wherein the second signal is included in a second portion of the SMTC window that does not overlap in time with the fi rst portion of the SMTC window,

determining, by the UE, a first Reference Signal Received Power (RSRP) for the first ceil using the first signal; and

determining, by the UE, a second RSRP for the second ceil using the second signal.

16. The one or more non-transitory computer-readable media of claim 15, wherein receiving the first signal comprises receiving a New Radio Secondary Synchronization Signal (NR-SSS) in the SMTC window .

17. The one or more non-transitory computer-readable media of claim 15, wherein receiving the second signal comprises receiving a NR-SSS in the SMTC window.

18. The one or more non-transitory computer-readable media of claim 15, wherein receiving the first signal comprises obtaining a first Synchronization Signal Block (SSB) corresponding to the first cell from the first signal, and

wherein determining the first RSRP for the first cell comprises determining an SSB- based RSRP for the first cell

19. The one or more non-transitory computer-readable media of claim 15, wherein receiving the second signal comprises obtaining a second SSB corresponding to the second cell from the second signal, and

wherein determining the second RSRP for the second cell comprises determining an SSB-based RSRP for the second cell

20. The one or more non-transitory computer-readable media of claim 15, wherein determining the first RSRP and the second RSRP comprises determining the first RSRP and the second RSRP independent of one another.

21. An apparatus comprising:

one or more processors; and

one or more computer-readable media storing instructions that, when executed by the one or more processors, are configured to cause the one or more processors to perform operations comprising:

receiving, at a user equipment (UE) for a cellular communications network, a first Synchronization Signal Block (SSB) corresponding to a first cell of the cellular communications network, and a second SSB corresponding to a second cell of the cellular communications network;

clarifying, by the UE, a first cell identifier (ID) of the first cell, wherein the clarifying comprises determining the first cell ID using one or more of a Primary' Synchronization Signal (PSS) or a Secondary Synchronization Signal (SSS) associated with a first base station corresponding to the first cell,

clarifying, by the UE, a second cell ID of the second cell, wherein the clarifying comprises determining the second cell ID using one or more of a Primary Synchronization Signal (PSS) or a Secondary Synchronization Signal (SSS) associated with a second base station corresponding to the second cell; and determining, by the UE using the first cell ID and the second ceil ID, an SSB measurement accuracy value, wherein the determining comprises:

measuring a first Reference Signal Received Power (RSRP) for the first cell and a second RSRP for the second cell,

correlating the first RSRP to the first cell using the first cell ID and the second RSRP to the second cell using the second cell ID, and modifying a value of at least one of the first RSRP or the second RSRP in response to correlating the first RSRP to the first cell and the second RSRP to the second cell.

22. The apparatus of claim 21, wherein the first base station includes one of an evolved NodeB (eNB) or a Next Generation NodeB (gNB), and

wherein the second base station includes one of an eNB or a gNB.

23. The apparatus of claim 21, wherein receiving the first SSB comprises receiving a first New Radio Secondary Synchronization Signal (NR-SSS) corresponding to the first cell, and wherein receiving the second SSB comprises receiving a second NR-SSS

corresponding to the second cell.

24. An apparatus comprising:

one or more processors; and

one or more computer-readable media storing instructions that, when executed by the one or more processors, are configured to cause the one or more processors to perform operations comprising:

receiving, at a user equipment (UE) for a cellular communications network, a first signal corresponding to a first cell of the cellular communications network, the first signal included in a first portion of a SSB-based Measurement Timing

Configuration (SMTC) window;

receiving, at the UE, a second signal corresponding to a second cell of the cellular communications network, the second signal being time division multiplexed (TDM) with the first signal, wherein the second signal is included in a second portion of the SMTC window that does not overlap in time with the first portion of the SMTC window; determining, by the UE, a first Reference Signal Received Power (RSRP) for the first cell using the first signal; and

determining, by the UE, a second RSRP for the second cell using the second signal.

25. The apparatus of claim 24, wherein receiving the first signal comprises receiving a New Radio Secondary Synchronization Signal (NR-SSS) in the SMTC window.

26. The apparatus of claim 24, wherein receiving the second signal comprises receiving a NR-SSS in the SMTC window.

27. The apparatus of claim 24, wherein receiving the first signal comprises obtaining a first Synchronization Signal Block (SSB) corresponding to the first cell from the first signal, and

wherein determining the first RSRP for the first cell comprises determining an SSB- based RSRP for the first cell.

28. The apparatus of claim 24, wherein receiving the second signal comprises obtaining a second SSB corresponding to the second cell from the second signal, and

wherein determining the second RSRP for the second cell comprises determining an SSB-based RSRP for the second cell.

29. The apparatus of claim 24, wherein determining the first RSRP and the second RSRP comprises determining the first RSRP and the second RSRP independent of one another.

30. The apparatus of claim 24, wherein receiving the first signal comprises receiving the first signal associated with a first base station corresponding to the first cell, and

wherein receiving the second signal comprises receiving the second signal associated with a second base station corresponding to the second cell.

31. The apparatus of claim 30, wherein the first base station includes one of an evolved NodeB (eNB) or a Next Generation NodeB (gNB), and

wherein the second base station includes one of an eNB or a gNB.

32. A method performed by a base station for a cellular communications network, the method comprising:

transmitting, to a user equipment (UE) for the cellular communications network, a first signal corresponding to a first cell of the cellular communications network, the first cell being associated with the base station, the first signal included in a first portion of a S SB- based Measurement Timing Configuration (SMTC) window, wherein the first signal is time division multiplexed (TDM) with a second signal corresponding to a second cell of the cellular communications network transmitted by a second base station, wherein the second signal is included in a second portion of the SMTC window that does not overlap in time with the first portion of the SMTC window, and

wherein the first signal is configured to be used by the UE to determine a first Reference Signal Received Power (RSRP) for the first, and

the second signal is configured to be used by the LIE to determine a second RSRP for the second cell.

33. The method of claim 32, wherein the first signal comprises a New Radio Secondary Synchronization Signal (NR-SSS) in the SMTC window.

34. The method of claim 32, wherein the second signal comprises a NR-SSS in the SMTC window .

35. The method of claim 32, wherein the first signal comprises a first Synchronization Signal Block (SSB) corresponding to the first cell from the first signal, and

wherein the UE is configured to determine an S SB-based RSRP for the first cell.

36. The method of claim 32, wherein the second signal comprises a second SSB corresponding to the second cell from the second signal, and

wherein the UE is configured to determine an SSB-based RSRP for the second cell.

37. The method of claim 32, wherein the base station includes one of an evolved NodeB (eNB) or a Next Generation NodeB (gNB), and

wherein the second base station includes one of an eNB or a gNB.