METHOD FOR CONTROLLING UPLINK POWER IN MULTI-SUBFRAME SCHEDULING

• US 20180249419A1
• Filed: 04/30/2018
• Published: 08/30/2018
• Est. Priority Date: 04/12/2013
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: ZHANG, Shichang, LI, Yingyang, SUN, Chengjun
• Granted Patent: US 10,448,339 B2
• Time in Patent Office: Days
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04L 5/0092 Indication of how the channel is divided
• CPC Class Codes: H04L 5/14 Two-way operation using the same type of signal, i.e. duplex
• CPC Class Codes: H04W 52/04 TPC
• CPC Class Codes: H04W 52/146 Uplink power control
• CPC Class Codes: H04W 52/228 using past power values or information
• CPC Class Codes: H04W 52/325 Power control of control or pilot channels
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Disclosed is a method for controlling an uplink (UL) power in a multi-subframe scheduling system including a user equipment (UE) receiving a multi-subframe UL scheduling instruction or physical downlink control channel (PDCCH) data of a downlink control information (DCI) format 3/3 A of the UE, in a DL subframe where the multi-subframe UL scheduling instruction is transmitted, and the UE determining a transmitting power of the PUSCH of each UL subframe scheduled by the multi-subframe UL scheduling instruction, based on a power controlling command value, and transmitting corresponding PUSCH data based on the calculated transmitting power.

Claims

1. A method in a user equipment (UE) for transmitting data in a wireless communication system, comprising:

receiving, from a base station, scheduling information for scheduling at least two subframes and power control information;

determining a first transmit power parameter for uplink data in a first subframe based on the power control information, the first subframe being scheduled firstly by the scheduling information;

determining a second transmit power parameter for uplink data in a second subframe, such that the second transmission power parameter is identical to a transmission power parameter for uplink data in a previous subframe of the second subframe, the second subframe being different than the subframe scheduled firstly by the scheduling information; and

transmitting the uplink data in the first subframe based on the determined first transmit power parameter and the uplink data in the second subframe based on the determined second transmit power parameter.

2. The method of claim 1, wherein the scheduling information is received in downlink control information.

3. The method of claim 1,

wherein the power control information comprises power control information for an uplink channel of each uplink subframe scheduled by the scheduling information, and

wherein transmission power for the uplink channel of a certain uplink subframe among each uplink subframe is determined based on transmission power for the uplink channel of a previous uplink subframe of the certain uplink subframe and the power control information for the uplink channel of the certain uplink subframe.

4. The method of claim 3,

wherein, if the certain uplink subframe among each uplink subframe is scheduled by scheduling information received in a plurality of downlink subframes, transmission power for the uplink channel of the certain uplink subframe is determined based on the power control information within last received uplink scheduling information.

5. The method of claim 1, wherein an uplink channel for transmitting the uplink data comprises a physical uplink shared channel.

10. The UE of claim 5, wherein an uplink channel for transmitting the uplink data comprises a physical uplink shared channel.

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

a receiver configured to receive, from a base station, scheduling information for scheduling at least two subframes and power control information;

a processor configured;

to determine a first transmit power parameter for uplink data in a first subframe based on the power control information, the first subframe being scheduled firstly by the scheduling information; and

to determine a second transmit power parameter for uplink data in a second subframe, such that the second transmission power parameter is same as a transmission power parameter for uplink data in a previous subframe of the second subframe, the second subframe being different than the subframe scheduled firstly by the scheduling information; and

a transceiver configured to transmit the uplink data in the first subframe based on the determined first transmit power parameter and the uplink data in the second subframe based on the determined second transmit power parameter.

7. The UE of claim 6, wherein the scheduling information is received in downlink control information.

8. The UE of claim 6,

wherein the power control information comprises power control information for an uplink channel of each uplink subframe scheduled by the scheduling information, and

wherein transmission power for the uplink channel of a certain uplink subframe among each uplink subframe is determined based on transmission power for the uplink channel of a previous uplink subframe of the certain uplink subframe and the power control information for the uplink channel of the certain uplink subframe.

9. The UE of claim 8,

wherein, if the certain uplink subframe among each uplink subframe is scheduled by scheduling information received in a plurality of downlink subframes, transmission power for the uplink channel of the certain uplink subframe, is determined, based on the power control information within last received uplink scheduling information.