Terminal device, method, and integrated circuit

• US 9,554,336 B2
• Filed: 07/10/2014
• Issued: 01/24/2017
• Est. Priority Date: 07/12/2013
• Status: Active Grant

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Ouchi, Wataru, Aiba, Tatsushi, Suzuki, Shoichi
• Primary Examiner(s): Alam, Fayyaz
• Application Number:
  US14/904,153
• Publication Number:
  US 20160165545A1
• Time in Patent Office: 929 Days
• Field of Search: 455/522, 455/69, 455/70, 455/127.1, 370310-320
• US Class Current: 1/1
• 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 52/327 Power control of multicast channels
• CPC Class Codes: H04W 52/367 Power values between minimum and maximum limits, e.g. dynamic range
• CPC Class Codes: H04W 52/48 during retransmission after error or non-acknowledgment

Abstract

A terminal device configured to communicate with a base station device using one cell. The terminal device is configured to: set transmission power for transmission of a physical uplink shared channel on a subframe belonging to a first subframe set, based on a first parameter relating to power control adjustment; set transmission power for the physical uplink shared channel on a subframe belonging to a second subframe set, based on a second parameter relating to the power control adjustment; and calculate a value of the first parameter by accumulating a correction value indicated by a transmit power control command corresponding to the first subframe set, in a case that accumulation is enabled; calculate a value of the second parameter by accumulating the correction value indicated by the transmit power control command corresponding to the second subframe set, in a case that accumulation is enabled. Thus, the base station device and the terminal device can efficiently perform the transmit power control.

Claims

1. A terminal device configured to communicate with a base station device using one cell, the terminal device comprising:

reception circuitry configured and/or programmed to receive first information indicating a subframe in a first subframe set and a subframe in a second subframe set, and second information indicating whether or not accumulation is enabled, for the one cell; and

transmission circuitry configured and/or programmed to;

set transmission power for transmission of a physical uplink shared channel on a subframe belonging to the first subframe set, based on a first parameter relating to power control adjustment;

set transmission power for the physical uplink shared channel on a subframe belonging to the second subframe set, based on a second parameter relating to the power control adjustment;

calculate a value of the first parameter by accumulating a correction value indicated by a transmit power control command corresponding to a subframe belonging to the first subframe set, in a case that the accumulation is enabled based on the second information;

calculate a value of the second parameter by accumulating the correction value indicated by the transmit power control command corresponding to a subframe belonging to the second subframe set, in the case that the accumulation is enabled based on the second information;

set one value indicated by one transmit power control command corresponding to the subframe belonging to the first subframe set, as the value of the first parameter, in a case that the accumulation is not enabled based on the second information; and

set one value indicated by one transmit power control command corresponding to the subframe belonging to the second subframe set, as the value of the second parameter, in the case that the accumulation is not enabled based on the second information;

wherein

in a case that transmission of the physical uplink shared channel on the subframe belonging to the second subframe set corresponds to a semi-persistent grant, the transmission circuitry is configured and/or programmed to set the transmission power based on the second parameter and a third parameter related to an uplink power control; and

in a case that transmission of the physical uplink shared channel on the subframe belonging to the second subframe set corresponds to a dynamic scheduled grant, the transmission circuitry is configured and/or programmed to set the transmission power based on the second parameter and a fourth parameter related to the uplink power control.

2. The terminal device according to claim 1, wherein

the reception circuitry is configured to receive information indicating a first uplink-downlink configuration and information indicating a second uplink-downlink configuration, and

the transmission circuitry is configured to

transmit a HARQ-ACK for a physical downlink shared channel detected in a subframe n−

j, on the physical uplink shared channel corresponding to a physical downlink control channel accompanied by C-RNTI detected in a subframe n−

k, in a subframe n, using a transmission power based on the first parameter or the second parameter,

set the k based on the first uplink-downlink configuration, and

set the j based on the second uplink-downlink configuration.

3. The terminal device according to claim 1, wherein

the transmission circuitry is configured to, in a case that a sounding reference signal is transmitted on the subframe belonging to the first subframe set, set transmission power for transmission of the sounding reference signal, based on the first parameter, and

the transmission circuitry is configured to, in a case that the sounding reference signal is transmitted on the subframe belonging to the second subframe set, set transmission power for the transmission of the sounding reference signal, based on the second parameter.

4. The terminal device according to claim 1, wherein

the transmission circuitry is configured not to accumulate the correction value for the first parameter, in a case that the transmission power based on the value of the first parameter reaches a maximum power, and the transmission power exceeds the maximum power by accumulating the correction value indicated by the transmit power control command corresponding to the subframe belonging to the first subframe set, and

the transmission circuitry is configured not to accumulate the correction value for the second parameter, in a case that the transmission power based on the value of the second parameter reaches the maximum power, and the transmission power exceeds the maximum power by accumulating the correction value indicated by the transmit power control command corresponding to the subframe belonging to the second subframe set.

5. The terminal device according to claim 1, wherein

the transmission circuitry is configured not to accumulate the correction value for the first parameter, in a case that the transmission power based on the value of the first parameter reaches a minimum power, and the transmission power falls below the minimum power by accumulating the correction value indicated by the transmit power control command corresponding to the subframe belonging to the first subframe set, and

the transmission circuitry is configured not to accumulate the correction value for the second parameter, in a case that the transmission power based on the value of the second parameter reaches the minimum power, and the transmission power falls below the minimum power by accumulating the correction value indicated by the transmit power control command corresponding to the subframe belonging to the second subframe set.

6. A method for use in a terminal device configured to communicate with a base station device using one cell, the method comprising:

receiving first information indicating a subframe in a first subframe set and a subframe in a second subframe set, and second information indicating whether or not accumulation is enabled, for the one cell;

setting transmission power for transmission of a physical uplink shared channel on a subframe belonging to the first subframe set, based on a first parameter relating to power control adjustment;

setting transmission power for transmission of the physical uplink shared channel on a subframe belonging to the second subframe set, based on a second parameter relating to the power control adjustment;

calculating a value of the first parameter by accumulating a correction value indicated by a transmit power control command corresponding to a subframe belonging to the first subframe set, in a case that accumulation is enabled based on the second information;

calculating a value of the second parameter by accumulating the correction value indicated by the transmit power control command corresponding to a subframe belonging to the second subframe set, in the case that the accumulation is enabled based on the second information;

setting one value indicated by one transmit power control command corresponding to the subframe belonging to the first subframe set, as the value of the first parameter, in a case that the accumulation is not enabled based on the second information; and

setting one value indicated by one transmit power control command corresponding to the subframe belonging to the second subframe set, as the value of the second parameter, in the case that the accumulation is not enabled based on the second information;

wherein

in a case that transmission of the physical uplink shared channel on the subframe belonging to the second subframe set corresponds to a semi-persistent grant, the transmission power is set based on the second parameter and a third parameter related to an uplink power control; and

in a case that transmission of the physical uplink shared channel on the subframe belonging to the second subframe set corresponds to a dynamic scheduled grant, the transmission power is set based on the second parameter and a fourth parameter related to the uplink power control.

7. The method according to claim 6, further comprising:

receiving information indicating a first uplink-downlink configuration and information indicating a second uplink-downlink configuration;

transmitting a HARQ-ACK for a physical downlink shared channel detected in a subframe n−

j, on the physical uplink shared channel corresponding to a physical downlink control channel accompanied by C-RNTI detected in a subframe n−

k, in a subframe n, using a transmission power based on the first parameter or the second parameter;

setting the k based on the first uplink-downlink configuration; and

setting the j based on the second uplink-downlink configuration.

8. The method according to claim 6, further comprising:

setting transmission power for transmission of a sounding reference signal, based on the first parameter, in a case that the sounding reference signal is transmitted on the subframe belonging to the first subframe set; and

setting the transmission power for the transmission of the sounding reference signal, based on the second parameter, in a case that the sounding reference signal is transmitted on the subframe belonging to the second subframe set.

9. The method according to claim 6, further comprising:

not accumulating the correction value for the first parameter, in a case that the transmission power exceeds a maximum power by accumulating the correction value indicated by the transmit power control command corresponding to the subframe belonging to the first subframe set, and the transmission power based on the value of the first parameter reaches the maximum power; and

not accumulating the correction value for the second parameter, in a case that the transmission power exceeds the maximum power by accumulating the correction value indicated by the transmit power control command corresponding to the subframe belonging to the second subframe set, and the transmission power based on the value of the second parameter reaches the maximum power.

10. The method according to claim 6, further comprising:

not accumulating the correction value for the first parameter, in a case that the transmission power falls below a minimum power by accumulating the correction value indicated by the transmit power control command corresponding to the subframe belonging to the first subframe set, and the transmission power based on the value of the first parameter reaches the minimum power; and

not accumulating the correction value for the second parameter, in a case that the transmission power falls below the minimum power by accumulating the correction value indicated by the transmit power control command corresponding to the subframe belonging to the second subframe set, and the transmission power based on the value of the second parameter reaches the minimum power.

11. An integrated circuit to be mounted on a terminal device configured to communicate with a base station device using one cell, and the integrated circuit being configured to cause the terminal device to perform at least a method comprising:

setting a subframe in a first subframe set and a subframe in a second subframe set, for the one cell, based on first information;

setting transmission power for transmission of a physical uplink shared channel on a subframe belonging to the first subframe set, based on a first parameter relating to power control adjustment;

setting the transmission power for transmission of the physical uplink shared channel on a subframe belonging to the second subframe set, based on a second parameter relating to the power control adjustment;

calculating a value of the first parameter by accumulating a correction value indicated by a transmit power control command corresponding to a subframe belonging to the first subframe set, in a case that accumulation is enabled based on second information;

calculating a value of the second parameter by accumulating the correction value indicated by the transmit power control command corresponding to a subframe belonging to the second subframe set, in the case that the accumulation is enabled based on the second information;

setting one value indicated by one transmit power control command corresponding to the subframe belonging to the first subframe set, as the value of the first parameter, in a case that the accumulation is not enabled based on the second information; and

setting one value indicated by one transmit power control command corresponding to the subframe belonging to the second subframe set, as the value of the second parameter, in the case that the accumulation is not enabled based on the second information;

wherein

in a case that transmission of the physical uplink shared channel on the subframe belonging to the second subframe set corresponds to a semi-persistent grant, the transmission power is set based on the second parameter and a third parameter related to an uplink power control; and

in a case that transmission of the physical uplink shared channel on the subframe belonging to the second subframe set corresponds to a dynamic scheduled grant, the transmission power is set based on the second parameter and a fourth parameter related to the uplink power control.

12. The integrated circuit according to claim 11, wherein the integrated circuit is configured to cause the terminal device to further perform:

receiving information indicating a first uplink-downlink configuration and information indicating a second uplink-downlink configuration;

transmitting a HARQ-ACK for a physical downlink shared channel detected in a subframe n−

j, on a physical uplink shared channel corresponding to a physical downlink control channel accompanied by C-RNTI detected in a subframe n−

k, in a subframe n, using a transmission power based on the first parameter or the second parameter;

setting the k based on the first uplink-downlink configuration; and

setting the j based on the second uplink-downlink configuration.

13. The integrated circuit according to claim 11, wherein the integrated circuit is configured to cause the terminal device to further perform:

setting the transmission power for transmission of a sounding reference signal, based on the first parameter, in a case that the sounding reference signal is transmitted on the subframe belonging to the first subframe set; and

setting the transmission power for the transmission of the sounding reference signal, based on the second parameter, in a case that the sounding reference signal is transmitted on the subframe belonging to the second subframe set.

14. The integrated circuit according to claim 11, wherein the integrated circuit is configured to cause the terminal device to further perform:

not accumulating the correction value for the first parameter, in a case that the transmission power exceeds a maximum power by accumulating the correction value indicated by the transmit power control command corresponding to the subframe belonging to the first subframe set, and the transmission power based on the value of the first parameter reaches the maximum power; and

not accumulating the correction value for the second parameter, in a case that the transmission power exceeds the maximum power by accumulating the correction value indicated by the transmit power control command corresponding to the subframe belonging to the second subframe set, and the transmission power based on the value of the second parameter reaches the maximum power.

15. The integrated circuit according to claim 11, wherein the integrated circuit is configured to cause the terminal device to further perform:

not accumulating the correction value for the first parameter, in a case that the transmission power falls below a minimum power by accumulating the correction value indicated by the transmit power control command corresponding to the subframe belonging to the first subframe set, and the transmission power based on the value of the first parameter reaches the minimum power; and

not accumulating the correction value for the second parameter, in a case that the transmission power falls below the minimum power by accumulating the correction value indicated by the transmit power control command corresponding to the subframe belonging to the second subframe set, and the transmission power based on the value of the second parameter reaches the minimum power.