Transmitting device and transmitting method

Patent metadata

Field	Value
Publication number	US-9735947-B2
Application number	US-201615253594-A
Country	US
Kind code	B2
Filing date	Aug 31, 2016
Priority date	Mar 28, 2013
Publication date	Aug 15, 2017
Grant date	Aug 15, 2017

Abstract

A transmitting device includes a controller and a transmitter. The controller, in operation, adds an offset to a transmission power or a transmission power density of first data mapped in a remaining resource other than a data resource, to control a transmission power or a transmission power density of second data mapped in the data resource, for use of a second mapping pattern. A part of a resource on which a reference signal is to be mapped in a first mapping pattern of the reference signal is replaced with the data resource in a second mapping pattern of the reference signal. The transmitter, in operation, transmits a signal including the first data, the second data, and the reference signal.

First claim

The invention claimed is:

1. A transmitting device comprising:
a controller which, in operation, controls a transmission power or a transmission power density of second data by adding an offset to a transmission power or a transmission power density of first data, wherein in a first mapping pattern that specifies reference resources in which reference signals are mapped, a portion of the reference resources is replaced with a data resource to form a second mapping pattern including the data resource and remaining resources that are not replaced, and in the second mapping pattern the second data is mapped in the data resource and the first data is mapped in the remaining resources; and
a transmitter which, in operation, transmits signal including the first data, the second data, and the reference signal.

2. The transmitting device according to claim 1 , wherein the offset is a negative value.

3. The transmitting device according to claim 1 , further comprising:
a receiver which, in operation, receives from a base station information indicating which mapping pattern, out of a plurality of mapping patterns including the first and second mapping patterns, is used and the offset.

4. The transmitting device according to claim 1 , wherein the offset is smaller with an increasing bandwidth allocated to said signal.

5. The transmitting device according to claim 1 , wherein the offset is a positive value.

6. The transmitting device according to claim 1 , wherein the offset is a value that zeros the transmission power or the transmission power density of the second data.

7. The transmitting device according to claim 1 , wherein the controller, in operation, sets a second MCS (Modulation and coding scheme) level for the second data based on a criterion different from a first MCS level for the first data.

8. The transmitting device according to claim 7 , wherein the first MCS level is indicated in control information transmitted from a base station, and the second MCS level is predefined.

9. The transmitting device according to claim 7 , wherein the controller, in operation, controls the second MCS level by adding a second offset to the first MCS level.

10. The transmitting device according to claim 7 , wherein the second MCS level is equal to the first MCS level when the first MCS level is greater than a threshold, and
the second MCS level is lower than the first MCS level when the first MCS level is equal to or less than the threshold.

11. The transmitting device according to claim 1 , wherein the controller, in operation, sets a transmission power or a transmission power density of the reference signal higher than the transmission power or the transmission power density of the first data when the second mapping pattern is used.

12. The transmitting device according to claim 11 , further comprising:
a receiver which, in operation, receives from a base station information indicating which mapping pattern, out of a plurality of mapping patterns including the first and second mapping patterns, is used and a third offset,
wherein the controller, in operation, sets the transmission power or the transmission power density of the reference signal by adding the third offset to the transmission power or the transmission power density of the first data.

13. The transmitting device according to claim 12 , wherein the third offset is smaller with an increasing bandwidth allocated to said signal.

14. A transmitting method comprising:
controlling a transmission power or a transmission power density of second data by adding an offset to a transmission power or a transmission power density of first data, wherein in a first mapping pattern that specifies reference resources in which reference signals are mapped, a portion of the reference resources is replaced with a data resource to form a second mapping pattern including the data resource and remaining resources that are not replaced, and in the second mapping pattern the second data is mapped in the data resource and the first data is mapped in the remaining resources; and
transmitting signal including the first data, the second data, and the reference signal.

15. The transmitting method according to claim 14 , further comprising:
receiving from a base station information indicating which mapping pattern, out of a plurality of mapping patterns including the first and second mapping patterns, is used and the offset.

16. The transmitting method according to claim 14 , further comprising:
setting a second MCS (Modulation and coding scheme) level for the second data based on a criterion different from a first MCS level for the first data.

17. The transmitting method according to claim 16 , further comprising:
controlling the second MCS level by adding a second offset to the first MCS level.

18. The transmitting method according to claim 16 , wherein the second MCS level is equal to the first MCS level when the first MCS level is greater than a threshold, and
the second MCS level is lower than the first MCS level when the first MCS level is equal to or less than the threshold.

19. The transmitting method according to claim 14 , further comprising:
setting a transmission power or a transmission power density of the reference signal higher than the transmission power or the transmission power density of the first data when the second mapping pattern is used.

20. The transmitting method according to claim 19 , further comprising:
receiving from a base station information indicating which mapping pattern, out of a plurality of mapping patterns including the first and second mapping patterns, is used and a third offset; and
setting the transmission power or the transmission power density of the reference signal by adding the third offset to the transmission power or the transmission power density of the first data.

Assignees

• Panasonic Ip Corp America

Inventors

• Takeda Kazuki
• Hoshino Masayuki
• Golitschek Edler Von Elbwart Alexander

Classifications

• H04L5/0051

  of dedicated pilots, i.e. pilots destined for a single user or terminal · CPC title

• H04W52/244

  Interferences in heterogeneous networks, e.g. among macro and femto or pico cells or other sector / system interference [OSI] · CPC title

• H04L1/0003

  by switching between different modulation schemes · CPC title

• H04L5/0044 Primary

  Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH · CPC title

• H04L5/0073 Primary

  Allocation arrangements that take into account other cell interferences · CPC title