WIRELESS COMMUNICATION APPARATUS

• US 20090202008A1
• Filed: 04/28/2006
• Published: 08/13/2009
• Est. Priority Date: 04/28/2006
• Status: Active Grant

• Current Assignee: Meta Platforms, Inc. (f/k/a Facebook, Inc.)
• Original Assignee: Mitsubishi Electric Corporation
• Inventors: Suzuki, Kuniyuki
• Granted Patent: US 8,311,135 B2
• Time in Patent Office: Days
• US Class Current: 375/260
• CPC Class Codes: H04L 1/0041 Arrangements at the transmitter end
• CPC Class Codes: H04L 1/0045 Arrangements at the receiver end
• CPC Class Codes: H04L 5/0023 Time-frequency-space
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/006 Quality of the received signal, e.g. BER, SNR, water filling

Abstract

A wireless communication device including a sending data amount determination unit, a data sending unit, a monitor function unit, a transmission control data producing unit, a transmission control data sending unit, a data reception unit, and an application I/F (interface) unit. The transmission control data sending unit includes a transmission control data separation unit, a transmission control data replication unit, and a data mapping unit.

Claims

1. A wireless communication device in which sending data and transmission control data are sent and received in resource block units, said transmission control data including resource dependent data and resource independent data except for said resource dependent data, said resource dependent data being provided for each said resource block according to the number of resource blocks for use in transmission, said resource dependent data depending on a transmission resource,

the wireless communication device comprising:

a transmission control data separation unit which receives said transmission control data to separate said transmission control data into said resource dependent data and said resource independent data;

a transmission control data replication unit which has at least a function of receiving said resource independent data to replicate said resource independent data according to said number of resource blocks;

a transmission control data mapping unit which receives said resource dependent data and said resource independent data including a replica and performs mapping such that said resource independent data and said resource dependent data are included in said resource block.

2. The wireless communication device according to claim 1, wherein said transmission control data replication unit also has a function of producing dummy data including only data of “

0”

or data of “

1”

, and

said transmission control data mapping unit maps said replicated resource independent data in part of said resource block and maps said dummy data in which all bits corresponding to said resource independent data are fixed to “

0”

or “

1”

in a rest of said resource block.

3. The wireless communication device according to claim 1, wherein said transmission control data mapping unit maps said resource independent data and said resource dependent data such that part of one or a plurality of sub-frames in said plurality of sub-frames provided by time dividing said resource block is occupied.

4. The wireless communication device according to claim 1, wherein said transmission control data mapping unit maps said resource independent data and said resource dependent data across all sub-carriers in a plurality of sub-carriers provided by frequency-dividing said resource block.

5. The wireless communication device according to claim 1, wherein said transmission control data mapping unit maps said resource independent data and said resource dependent data across some sub-carriers in a plurality of sub-carriers provided by frequency-dividing said resource block.

6. The wireless communication device according to claim 5, wherein said transmission control data mapping unit maps said resource independent data by further dividing timing in each sub-frame of said resource block.

7. The wireless communication device according to claim 1, wherein said transmission control data mapping unit performs different scrambling processing to said resource independent data in each said resource block.

8. The wireless communication device according to claim 7, wherein a scrambling code is multiplied to said resource independent data in said scrambling processing, said scrambling code decreasing a ratio of a peak electric power to an average electric power in sending said transmission control data.

9. A wireless communication device in which sending data and transmission control data are sent and received in resource block units, said transmission control data including resource dependent data and resource independent data except for said resource dependent data, said resource dependent data being provided for each said resource block according to the number of resource blocks for use in transmission, said resource dependent data depending on a transmission resource,

the wireless communication device comprising:

a transmission control data separation unit which receives said transmission control data to separate said transmission control data into said resource dependent data and said resource independent data;

an error correction unit which receives said separated resource dependent data and said separated resource independent data and performs error correction coding processing to said resource dependent data and said resource independent data to produce error-correction-coded resource dependent data and error-correction-coded resource independent data;

a puncture unit which receives said error-correction-coded resource dependent data and said error-correction-coded resource independent data and performs puncture processing to an excess bit to produce punctured resource independent data, said excess bit exceeding a data amount sendable by said resource block in error-correction-coded resource independent data; and

a transmission control data mapping unit which receives said error-correction-coded resource dependent data and said punctured resource independent data and performs mapping such that said error-correction-coded resource dependent data and said punctured resource independent data are included in said resource block.

10. A wireless communication device in which sending data and transmission control data are sent and received in resource block units,

the wireless communication device comprising:

a sending time interval measuring unit which measures a sending interval of said sending data; and

a sending data mapping unit which maps said sending data in a predetermined wireless format,

wherein said sending data mapping unit has a function of determining whether or not a known series is required based on a measurement result of said sending interval, said known series being formed by known data for a reception-side wireless communication device separately from said sending data and said transmission control data.

11. The wireless communication device according to claim 10, wherein said known series is sent prior to sending of said sending data and said transmission control data.

12. The wireless communication device according to claim 11, wherein said resource block provides a plurality of sub-frames by being time divided, and

said known series is mapped in a temporally preceding sub-frame of a sub-frame in which said sending data and said transmission control data are mapped in the same resource block as said sending data and said transmission control data are located.

13. The wireless communication device according to claim 11, wherein said resource block provides a plurality of sub-frames by being time divided, and

said known series is mapped in a temporally preceding sub-frame of a sub-frame in which said sending data and said transmission control data are mapped in another resource block than said sending data and said transmission control data are located.

14. The wireless communication device according to claim 10, wherein said known series is sent in parallel to sending of said sending data and said transmission control data.

15. The wireless communication device according to claim 14, wherein said resource block provides a plurality of sub-frames by being time divided, and

said known series is mapped in a sub-frame temporally identical to a sub-frame in which said sending data and said transmission control data are mapped in another resource block than said sending data and said transmission control data are located.

16. The wireless communication device according to claim 10, wherein said known series is sent subsequent to sending of said sending data and said transmission control data.

17. The wireless communication device according to claim 14, wherein said resource block provides a plurality of sub-frames by being time divided, and

said known series is mapped in a temporally subsequent sub-frame of a sub-frame in which said sending data and said transmission control data are mapped in the same resource block as said sending data and said transmission control data are located in said resource block.

18. The wireless communication device according to claim 10, wherein said sending data mapping unit performs mapping so as to send said known series when a measurement result of said sending interval is not lower than a predetermined threshold.

19. The wireless communication device according to claim 10, wherein said sending data mapping unit performs mapping so as to send said known series a plurality of times when a measurement result of said sending interval is not lower than a predetermined first threshold,

said sending data mapping unit compares said first threshold to a predetermined second threshold when the measurement result of said sending interval is lower than said first threshold, said second threshold being lower than said first threshold, and

said sending data mapping unit performs mapping so as to send said known series when the measurement result of said sending interval is not lower than said second threshold.