IP Library › Granted Patent US 12,200,642
Granted Patent B2
US 12,200,642 · App. 18/474,989 · Granted Jan 14, 2025

Method and apparatus for communication based on frame structure

Inventors: Yingjie Zhang (Beijing, CN); Bin Yu (Beijing, CN); Chen Qian (Beijing, CN); Qi Xiong (Beijing, CN)
Assignee: Samsung Electronics Co., Ltd.
H04W56/001H04W72/0446H04W72/0453H04W72/1268H04W72/23H04W74/0833
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Quick Facts
Patent No.
US 12,200,642
App. No.
18/474,989
Granted
Jan 14, 2025
Kind
B2
Abstract

The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4th-Generation (4G) communication system such as long term evolution (LTE). The method for operating a user equipment (UE) in a wireless communication system is provided. The method includes detecting a synchronization signal block, performing downlink synchronization process according to the detected synchronization signal block, and determining time-frequency resources of an anchor subband; acquiring random access configuration information according to the time-frequency resources of the anchor subband, performing a random access process according to the random access configuration information, and completing uplink synchronization; and acquiring control information in a control channel band, and performing data communication with a base station in the data transmission band according to the control information.

Claims (88)

1. A method performed by a user equipment (UE) in a wireless communication system, the method comprising:

receiving, from a base station, configuration information for a physical random access channel (PRACH) including information regarding a preamble format for PRACH transmission;

setting a target power based on an initial power, a delta-preamble value, a power ramping step, and a power ramping counter; and

transmitting, to the base station, a random access preamble based on the target power,

wherein the delta-preamble value is associated with the preamble format and a subcarrier spacing.

2. The method of claim 1 ,

wherein the target power is set based on a following equation:

PREAMBLE_RECEIVED_TARGET_POWER=preambleReceivedTargetPower+DELTA_PREAMBLE+ (PREAMBLE_POWER_RAMPING_COUNTER−1)*PREAMBLE_POWER_RAMPING_STEP,

where the PREAMBLE_RECEIVED_TARGET_POWER refers to the target power, the preambleReceivedTargetPower refers to the initial power, the DELTA_PREAMBLE refers to the delta-preamble value, the PREAMBLE_POWER_RAMPING_COUNTER refers to the power ramping counter, the PREAMBLE_POWER_RAMPING_STEP refers to the power ramping step.

3. The method of claim 1 ,

wherein the initial power is configured by a higher layer signalling, and

wherein the power ramping step is configured by the higher layer signalling.

4. The method of claim 1 ,

wherein the delta-preamble value is associated with a power offset, and

wherein the configuration information for the PRACH includes a PRACH configuration index for the preamble format.

5. The method of claim 1 ,

wherein the subcarrier spacing is determined by msg1-SubcarrierSpacing,

wherein the delta-preamble value is identified as one of 0, 3, 5, 8, 11 decibel (dB), if the subcarrier spacing is 15 kilohertz (kHz),

wherein the delta-preamble value is identified as one of 3, 6, 8, 11, 14 dB, if the subcarrier spacing is 30 kHz,

wherein the delta-preamble value is identified as one of 6, 9, 11, 14, 17 dB, if the subcarrier spacing is 60 kHz, and

wherein the delta-preamble value is identified as one of 9, 12, 14, 17, 20 dB, if the subcarrier spacing is 120 KHz.

6. A user equipment (UE) in a wireless communication system, the UE comprising:

a transceiver; and

at least one processor coupled with the transceiver, wherein the at least one processor is configured to:

receive, from a base station, configuration information for a physical random access channel (PRACH) including information regarding a preamble format for PRACH transmission;

set a target power based on an initial power, a delta-preamble value, a power ramping step, and a power ramping counter; and

transmit, to the base station, a random access preamble based on the target power,

wherein the delta-preamble value is associated with the preamble format and a subcarrier spacing.

7. The UE of claim 6 ,

wherein the target power is set based on a following equation:

PREAMBLE_RECEIVED_TARGET_POWER=preambleReceivedTargetPower+DELTA_PREAMBLE+ (PREAMBLE_POWER_RAMPING_COUNTER−1)*PREAMBLE_POWER_RAMPING_STEP,

where the PREAMBLE_RECEIVED_TARGET_POWER refers to the target power, the preambleReceivedTargetPower refers to the initial power, the DELTA_PREAMBLE refers to the delta-preamble value, the PREAMBLE_POWER_RAMPING_COUNTER refers to the power ramping counter, the PREAMBLE_POWER_RAMPING_STEP refers to the power ramping step.

8. The UE of claim 6 ,

wherein the initial power is configured by a higher layer signalling, and

wherein the power ramping step is configured by the higher layer signalling.

9. The UE of claim 6 ,

wherein the delta-preamble value is associated with a power offset, and

wherein the configuration information for the PRACH includes a PRACH configuration index for the preamble format.

10. The UE of claim 6 ,

wherein the subcarrier spacing is determined by msg1-SubcarrierSpacing,

wherein the delta-preamble value is identified as one of 0, 3, 5, 8, 11 decibel (dB), if the subcarrier spacing is 15 kilohertz (kHz),

wherein the delta-preamble value is identified as one of 3, 6, 8, 11, 14 dB, if the subcarrier spacing is 30 kHz,

wherein the delta-preamble value is identified as one of 6, 9, 11, 14, 17 dB, if the subcarrier spacing is 60 kHz, and

wherein the delta-preamble value is identified as one of 9, 12, 14, 17, 20 dB, if the subcarrier spacing is 120 KHz.

11. A method by performed by a base station in a wireless communication system, the method comprising:

transmitting, to a user equipment (UE), configuration information for a physical random access channel (PRACH) including information regarding a preamble format for PRACH transmission; and

receiving, from the UE, a random access preamble associated with a target power,

wherein the target power is associated with an initial power, a delta-preamble value, a power ramping step, and a power ramping counter, and

wherein the delta-preamble value is associated with the preamble format and a subcarrier spacing.

12. The method of claim 11 ,

wherein the target power is set based on a following equation:

PREAMBLE_RECEIVED_TARGET_POWER=preambleReceivedTargetPower+DELTA_PREAMBLE+ (PREAMBLE_POWER_RAMPING_COUNTER−1)*PREAMBLE_POWER_RAMPING_STEP,

where the PREAMBLE_RECEIVED_TARGET_POWER refers to the target power, the preambleReceivedTargetPower refers to the initial power, the DELTA_PREAMBLE refers to the delta-preamble value, the PREAMBLE_POWER_RAMPING_COUNTER refers to the power ramping counter, the PREAMBLE_POWER_RAMPING_STEP refers to the power ramping step.

13. The method of claim 11 ,

wherein the initial power is configured by a higher layer signalling, and

wherein the power ramping step is configured by the higher layer signalling.

14. The method of claim 11 ,

wherein the delta-preamble value is associated with a power offset, and

wherein the configuration information for the PRACH includes a PRACH configuration index for the preamble format.

15. The method of claim 11 ,

wherein the subcarrier spacing is determined by msg1-SubcarrierSpacing,

wherein the delta-preamble value is identified as one of 0, 3, 5, 8, 11 decibel (dB), if the subcarrier spacing is 15 kilohertz (kHz),

wherein the delta-preamble value is identified as one of 3, 6, 8, 11, 14 dB, if the subcarrier spacing is 30 kHz,

wherein the delta-preamble value is identified as one of 6, 9, 11, 14, 17 dB, if the subcarrier spacing is 60 kHz, and

wherein the delta-preamble value is identified as one of 9, 12, 14, 17, 20 dB, if the subcarrier spacing is 120 KHz.

16. A base station in a wireless communication system, the base station comprising:

a transceiver; and

at least one processor coupled with the transceiver, wherein the at least one processor is configured to:

transmit, to a user equipment (UE), configuration information for a physical random access channel (PRACH) including information regarding a preamble format for PRACH transmission; and

receive, from the UE, a random access preamble associated with a target power,

wherein the target power is associated with an initial power, a delta-preamble value, a power ramping step, and a power ramping counter, and

wherein the delta-preamble value is associated with the preamble format and a subcarrier spacing.

17. The base station of claim 16 ,

wherein the target power is set based on a following equation:

PREAMBLE_RECEIVED_TARGET_POWER=preambleReceivedTargetPower+DELTA_PREAMBLE+ (PREAMBLE_POWER_RAMPING_COUNTER−1)*PREAMBLE_POWER_RAMPING_STEP,

where the PREAMBLE_RECEIVED_TARGET_POWER refers to the target power, the preambleReceivedTargetPower refers to the initial power, the DELTA_PREAMBLE refers to the delta-preamble value, the PREAMBLE_POWER_RAMPING_COUNTER refers to the power ramping counter, the PREAMBLE_POWER_RAMPING_STEP refers to the power ramping step.

18. The base station of claim 16 ,

wherein the initial power is configured by a higher layer signalling, and

wherein the power ramping step is configured by the higher layer signalling.

19. The base station of claim 16 ,

wherein the delta-preamble value is associated with a power offset, and

wherein the preamble format is given by a PRACH configuration index included in the PRACH transmission parameters.

20. The base station of claim 16 ,

wherein the subcarrier spacing is determined by msg1-SubcarrierSpacing,

wherein the delta-preamble value is identified as one of 0, 3, 5, 8, 11 decibel (dB), if the subcarrier spacing is 15 kilohertz (kHz),

wherein the delta-preamble value is identified as one of 3, 6, 8, 11, 14 dB, if the subcarrier spacing is 30 kHz,

wherein the delta-preamble value is identified as one of 6, 9, 11, 14, 17 dB, if the subcarrier spacing is 60 kHz, and

wherein the delta-preamble value is identified as one of 9, 12, 14, 17, 20 dB, if the subcarrier spacing is 120 KHz.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 26, 2023
From: ZHANG, YINGJIE; YU, BIN; QIAN, CHEN; XIONG, QI
To: SAMSUNG ELECTRONICS CO., LTD
Reel/Frame 065036/0177 →
Priority Claims (3)
CN 201710539017.8 · Jul 4, 2017 · national
CN 201810029413.0 · Jan 11, 2018 · national
CN 201810105219.6 · Feb 1, 2018 · national
Continuity (3)
Continuation 17562857 · Dec 27, 2021
Continuation 16628613
Related Publication 20240049153A1 · Feb 8, 2024
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