Power control method and terminal equipment

• US 10,638,433 B2
• Filed: 09/07/2018
• Issued: 04/28/2020
• Est. Priority Date: 07/29/2011
• Status: Active Grant

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Xu, Haibo, Wang, Yi
• Primary Examiner(s): Mui, Gary
• Application Number:
  US16/124,985
• Publication Number:
  US 20190007911A1
• Time in Patent Office: 599 Days
• CPC Class Codes: H04W 52/146 Uplink power control
• CPC Class Codes: H04W 52/281 taking into account user or data type priority
• CPC Class Codes: H04W 52/325 Power control of control or pilot channels
• CPC Class Codes: H04W 52/346 distributing total power among users or channels
• CPC Class Codes: H04W 52/367 Power values between minimum and maximum limits, e.g. dynamic range
• CPC Class Codes: H04W 52/50 at the moment of starting communication in a multiple access environment
• CPC Class Codes: H04W 74/0833 Random access procedures, e.g. with 4-step access
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A user equipment includes: a transmitter configured to transmit uplink signals; and a processor circuit coupled with the transmitter, the processor circuit configured to: drop a Sounding Reference Signal (SRS) transmission when a total transmission power exceeds maximum output power of the user equipment and the user equipment needs to transmit a Physical Random Access Channel (PRACH) signal in a secondary serving cell in parallel with the SRS transmission in a symbol on a subframe of a different serving cell; and adjust transmission power of a Physical Uplink Shared Channel (PUSCH) signal until an adjusted total transmission power is less than or equal to the maximum output power of the user equipment when the user equipment needs to transmit a PRACH signal in a secondary serving cell in parallel with a PUSCH signal in a different serving cell within a symbol.

Claims

1. A user equipment comprising:

a processor circuit configured to;

perform a transmission power control according to Physical Random Access Channel (PRACH) signal, Physical uplink channel signal and uplink reference signal so that the total transmission power is less than or equal to the maximum output power for the user equipment; and

transmit the PRACH signal or Physical uplink channel signal.

2. The user equipment according to claim 1, wherein the transmission power control is performed to satisfy the transmission power of signal of higher priority order.

3. The user equipment according to claim 1, wherein the Physical uplink channel is Physical Uplink Shared Channel (PUSCH), a priority order is predefined, the priority order of a PUSCH transmission with UCI is less than that of PUSCH transmission with no UCI.

4. The user equipment according to claim 1, wherein the Physical uplink channel is Physical Uplink Shared Channel (PUSCH), a PUSCH transmission includes to transmit PUSCH signal.