Granted Patent B2

US 10,880,032 · App. 16/064,863 · Granted Dec 29, 2020

Inventors: Yunjung Yi (Seoul, KR); Kijun Kim (Seoul, KR); Eunsun Kim (Seoul, KR); Hyunsoo Ko (Seoul, KR)

Assignee: LG Electronics Inc.

H04J11/0076H04B7/0639H04B7/2656H04J11/0086H04L5/001H04L27/2607H04W56/00H04W56/0015H04L5/0048

Abstract

Claims (74)

1. A method for receiving a synchronization signal (SS), the method performed by a user equipment (UE) and comprising:

receiving a block for the SS from a cell, wherein the block for the SS includes a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a physical broadcast channel (PBCH);

receiving radio resource management reference signals (RRM-RSs) from the cell and from a neighbor cell, respectively;

performing a measurement based on the block for the SS and the RRM-RSs,

wherein the RRM-RSs includes a first RRM-RS and a second RRM-RS, and

wherein the second RRM-RS is used to select a best beam of the cell;

transmitting a random access preamble based on a beam ID of the selected best beam;

receiving a random access response including a Radio Network Temporary Identifier (RNTI) based on the beam ID of the selected best beam; and

transmitting a third message (MSG3) in response to the reception of the random access response, the MSG3 including the beam ID of the selected best beam,

wherein the block for the SS is not aligned with a center frequency of a bandwidth of the cell,

wherein the bandwidth of the cell is divided into a plurality of bandwidth parts (BWPs), and

wherein the UE is configured with at least one BWP among the plurality of BWPs.

2. The method of claim 1 ,

wherein the plurality of BWPs are used for one or more numerologies, and

wherein each numerology is defined by a subcarrier spacing and a cycle prefix.

3. The method of claim 1 , wherein a size of the at least one BWP is differently configured per UE.

4. The method of claim 1 , wherein the block for the SS is received per beam.

5. The method of claim 4 , further comprising:

performing a beam sweeping for receiving the block for the SS.

6. The method of claim 1 , further comprising:

transmitting a beam measurement report including information regarding a best beam.

7. The method of claim 1 , further comprising:

performing a random access procedure,

wherein the random access procedure relates to a procedure for managing a beam.

8. The method of claim 1 , wherein the cell is a new radio (NR) cell, and

wherein a channel raster of the NR cell is shifted by 7.5 kHz.

9. A user equipment (UE) configured to receive a synchronization signal (SS), the UE comprising:

a transceiver;

at least one processor; and

at least one computer memory operably connectable to the at least one processor and storing instructions that, based on being executed by the at least one processor, perform operations comprising:

receiving, through the transceiver, a block for the SS from a cell, wherein the block for the SS includes a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a physical broadcast channel (PBCH);

receiving radio resource management reference signals (RRM-RSs) from the cell and from a neighbor cell, respectively;

performing a measurement based on the block for the SS and the RRM-RSs,

wherein the RRM-RSs includes a first RRM-RS and a second RRM-RS,

wherein the second RRM-RS is used to select a best beam of the cell;

transmitting a random access preamble based on a beam ID of the selected best beam;

receiving a random access response including a Radio Network Temporary Identifier (RNTI) based on the beam ID of the selected best beam; and

transmitting a third message (MSG3) in response to the reception of the random access response, the MSG3 including the beam ID of the selected best beam,

wherein the block for the SS is not aligned with a center frequency of a bandwidth of the cell,

wherein the bandwidth of the cell is divided into a plurality of bandwidth parts (BWPs), and

wherein the UE is configured with at least one BWP among the plurality of BWPs.

10. The UE of claim 9 ,

wherein the plurality of BWPs are used for one or more numerologies, and

wherein each numerology is defined by a subcarrier spacing and a cycle prefix.

11. The UE of claim 9 , wherein a size of the at least one BWP is differently configured per UE.

12. The UE of claim 9 , wherein the block for the SS is received per beam.

13. The UE of claim 9 , wherein the operations further comprise:

performing a beam sweeping for receiving the block for the SS.

14. The UE of claim 9 , wherein the operations further comprise:

transmitting, through the transceiver, a beam measurement report including information regarding a best beam.

15. The UE of claim 9 , wherein the operations further comprise:

performing a random access procedure,

wherein the random access procedure relates to a procedure for managing a beam.

16. The UE of claim 9 , wherein the cell is a new radio (NR) cell, and

wherein a channel raster of the NR cell is shifted by 7.5 kHz.

17. A processing device configured to control a user equipment (UE) to receive a synchronization signal (SS), the processing device comprising:

at least one processor; and

at least one computer memory operably connectable to the at least one processor and storing instructions that, based on being executed by the at least one processor, perform operations comprising:

receiving a block for the SS from a cell, wherein the block for the SS includes a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a physical broadcast channel (PBCH);

receiving radio resource management reference signals (RRM-RSs) from the cell and from a neighbor cell, respectively;

performing a measurement based on the block for the SS and the RRM-RSs,

wherein the RRM-RSs includes a first RRM-RS and a second RRM-RS,

wherein the second RRM-RS is used to select a best beam of the cell;

transmitting a random access preamble based on a beam ID of the selected best beam;

receiving a random access response including a Radio Network Temporary Identifier (RNTI) which is based on the beam ID of the selected best beam; and

transmitting a third message (MSG3) in response to the reception of the random access response, the MSG3 including the beam ID of the selected best beam,

wherein the block for the SS is not aligned with a center frequency of a bandwidth of the cell,

wherein the bandwidth of the cell is divided into a plurality of bandwidth parts (BWPs), and

wherein the UE is configured with at least one BWP among the plurality of BWPs.

18. The processing device of claim 17 ,

wherein the plurality of BWPs are used for one or more numerologies, and

wherein each numerology is defined by a subcarrier spacing and a cycle prefix.

19. The processing device of claim 17 , wherein a size of the at least one BWP is differently configured per UE.

20. The processing device of claim 17 , wherein the block for the SS is received per beam.

Assignments (1)

Continuity (4)

Cited By (9)

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