Terminal device, base station device, and communication method

Patent metadata

Field	Value
Publication number	US-9769771-B2
Application number	US-201515326906-A
Country	US
Kind code	B2
Filing date	Jul 16, 2015
Priority date	Jul 18, 2014
Publication date	Sep 19, 2017
Grant date	Sep 19, 2017

Abstract

If dual connectivity is configured, and a first cell group includes a primary cell and an uplink physical channel in a second cell group is a physical uplink control channel in the second cell group, power of the uplink physical channel in the second cell group is determined on the basis of whether P SCG , which is the maximum transmit power of the second cell group, is exceeded, and P SCG is calculated through computation using at least P CMAX , P MeNB , and power of the physical uplink control channel in the first cell group.

First claim

The invention claimed is:

1. A terminal device comprising:
a higher layer processing unit that configures a first cell group and a second cell group and configures P MeNB , guaranteed power in the first cell group, and P SeNB , guaranteed power in the second cell group; and
an uplink subframe generation unit that generates an uplink physical channel, wherein
for the uplink physical channel,
in a case that dual connectivity is not configured, power of the uplink physical channel is determined on the basis of whether P CMAX , the maximum transmit power of the terminal device, is exceeded,
in a case that the dual connectivity is configured, power of the uplink physical channel in the first cell group is determined on the basis of whether P MCG , the maximum transmit power of the first cell group, is exceeded, power of the uplink physical channel in the second cell group is determined on the basis of whether P SCG , the maximum transmit power of the second cell group, is exceeded, the P MCG is calculated through computation using at least the P CMAX and the P SeNB , and the P SCG is calculated through computation using at least the P CMAX and the P MeNB , and
in a case that the dual connectivity is configured, the first cell group includes a primary cell, and the uplink physical channel in the second cell group is a physical uplink control channel in the second cell group, the P SCG is calculated through further computation using at least power of a physical uplink control channel in the first cell group.

2. The terminal device according to claim 1 , wherein, in a case that the dual connectivity is configured, the first cell group includes a primary cell, and the uplink physical channel in the second cell group is a physical uplink shared channel with uplink control information including HARQ-ACK in the second cell group, the P SCG is calculated through further computation using at least power of a physical uplink shared channel with uplink control information including HARQ-ACK in the first cell group.

3. The terminal device according to claim 1 , wherein, in a case that the dual connectivity is configured, the first cell group includes a primary cell, and the uplink physical channel in the second cell group is a physical uplink shared channel with uplink control information not including HARQ-ACK in the second cell group, the P SCG is calculated through further computation using at least power of a physical uplink shared channel in the first cell group.

4. A base station device communicating with a terminal device, the base station device comprising:
a higher layer processing unit that configures a first cell group and a second cell group and configures P MeNB , guaranteed power in the first cell group, and P SeNB , guaranteed power in the second cell group; and
an uplink subframe reception unit that receives an uplink physical channel, wherein
for the uplink physical channel,
in a case that dual connectivity is not configured, power of the uplink physical channel is determined on the basis of whether P CMAX , the maximum transmit power of the terminal device, is exceeded,
in a case that the dual connectivity is configured, power of the uplink physical channel in the first cell group is determined on the basis of whether P MCG , the maximum transmit power of the first cell group, is exceeded, power of the uplink physical channel in the second cell group is determined on the basis of whether P SCG , the maximum transmit power of the second cell group, is exceeded, the P MCG is calculated through computation using at least the P CMAX and the P SeNB , and the P SCG is calculated through computation using at least the P CMAX and the P MeNB ,
in a case that the dual connectivity is configured, the first cell group includes a primary cell, and the uplink physical channel in the second cell group is a physical uplink control channel in the second cell group, the P SCG is calculated through further computation using at least power of a physical uplink control channel in the first cell group.

5. The base station device according to claim 4 , wherein, in a case that the dual connectivity is configured, the first cell group includes a primary cell, and the uplink physical channel in the second cell group is a physical uplink shared channel with uplink control information including HARQ-ACK in the second cell group, the P SCG is calculated through further computation using at least power of a physical uplink shared channel with uplink control information including HARQ-ACK in the first cell group.

6. The base station device according to claim 4 , wherein, in a case that the dual connectivity is configured, the first cell group includes a primary cell, and the uplink physical channel in the second cell group is a physical uplink shared channel with uplink control information not including HARQ-ACK in the second cell group, the P SCG is calculated through further computation using at least power of a physical uplink shared channel in the first cell group.

7. A communication method in a terminal device, the communication method comprising the steps of:
configuring a first cell group and a second cell group;
configuring P MeNB , guaranteed power in the first cell group, and P SeNB , guaranteed power in the second cell group; and
generating an uplink physical channel,
for the uplink physical channel,
upon dual connectivity being not configured, power of the uplink physical channel being determined on the basis of whether P CMAX , the maximum transmit power of the terminal device, is exceeded,
upon the dual connectivity being configured, power of the uplink physical channel in the first cell group being determined on the basis of whether P MCG , the maximum transmit power of the first cell group, is exceeded, and power of the uplink physical channel in the second cell group being determined on the basis of whether P SCG , the maximum transmit power of the second cell group, is exceeded, the P MCG being calculated through computation using at least the P CMAX and the P SeNB , and the P SCG being calculated through computation using at least the P CMAX and the P MeNB ,
upon the dual connectivity being configured, the first cell group including a primary cell, and the uplink physical channel in the second cell group being a physical uplink control channel in the second cell group, the P SCG being calculated through further computation using at least power of a physical uplink control channel in the first cell group.

8. A communication method in a base station device communicating with a terminal device, the communication method comprising the steps of:
configuring a first cell group and a second cell group;
configuring P MeNB , guaranteed power in the first cell group, and P SeNB , guaranteed power in the second cell group; and
receiving an uplink physical channel,
for the uplink physical channel,
upon dual connectivity being not configured, power of the uplink physical channel being determined on the basis of whether P CMAX , the maximum transmit power of the terminal device, is exceeded,
upon the dual connectivity being configured, power of the uplink physical channel in the first cell group being determined on the basis of whether P MCG , the maximum transmit power of the first cell group, is exceeded, and power of the uplink physical channel in the second cell group being determined on the basis of whether P SCG , the maximum transmit power of the second cell group, is exceeded, the P MCG being calculated through computation using at least the P CMAX and the P SeNB , and the P SCG being calculated through computation using at least the P CMAX and the P MeNB ,
upon the dual connectivity being configured, the first cell group including a

Assignees

• Sharp Kk

Inventors

• Nogami Toshizo
• Shimezawa Kazuyuki
• Imamura Kimihiko
• Ouchi Wataru
• Kusashima Naoki
• Ruiz Delgado Alvaro

Classifications

• H04W52/265

  taking into account the quality of service QoS · CPC title

• H04L1/1893

  Physical mapping arrangements (physical resource mapping in general H04L5/00) · CPC title

• H04L5/0055

  Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861) · CPC title

• H04W52/322 Primary

  Power control of broadcast channels · CPC title

• H04W52/40

  during macro-diversity or soft handoff · CPC title