WIRELESS COMMUNICATION SYSTEM, BASE STATION DEVICE, MOBILE STATION DEVICE, AND WIRELESS COMMUNICATION METHOD

• US 20110200028A1
• Filed: 08/17/2009
• Published: 08/18/2011
• Est. Priority Date: 09/22/2008
• 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: Nakashima, Daiichiro, Suzuki, Shoichi
• Granted Patent: US 8,842,608 B2
• Time in Patent Office: Days
• US Class Current: 370/338
• CPC Class Codes: H04L 1/1861 Physical mapping arrangements for ACK signaling see also H04L5/0053
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/003 Arrangements for allocating sub-channels of the transmission path
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04W 28/0231 based on communication conditions dynamic wireless traffic scheduling definition based on channel quality criteria H04W72/54
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 72/54 based on quality criteria

Abstract

A base station device, which allocates one or more subbands of each of an uplink and a downlink to a mobile station device and transmits response information, which indicates whether or not uplink data from the mobile station device has been properly received, to the mobile station device, the base station device includes: a control unit (11) which controls an arrangement of a response information group including multiple pieces of response information directed to a downlink subband allocated to the mobile station device; and a multiplexing unit (160) which collects the same type of multiple pieces of response information to configure the response information group, and arranges the configured response information group in the downlink subband based on the control of the control unit.

Claims

1. A wireless communication system comprising multiple mobile station devices and a base station device, which allocates one or more subbands of each of an uplink and a downlink to the mobile station device and transmits response information indicating whether or not uplink data has been properly received from the mobile station device,

wherein the base station device comprises:

a control unit which controls an arrangement of a response information group including multiple pieces of response information directed to a downlink subband allocated to the mobile station device and generates response information group setting information regarding an arrangement directed to a subband of the response information group; and

a multiplexing unit which collects the same type of multiple pieces of response information to configure the response information group, and arranges the configured response information group in the downlink subband based on the control of the control unit, and

the mobile station device comprises;

a control unit which recognizes a downlink subband in which the response information group is arranged based on the response information group setting information and controls extraction of the response information addressed to its own mobile station device from the recognized subband;

a demultiplexing unit which extracts the response information addressed to its own mobile station from the downlink subband based on the control of the control unit; and

a decoding unit which decodes the response information addressed to its own mobile station device extracted by the demultiplexing unit.

2. The wireless communication system according to claim 1, wherein the multiplexing unit of the base station device configures the response information group corresponding to an uplink subband by collecting multiple pieces of response information corresponding to multiple data arranged in the same subband of the uplink as the same type of the multiple pieces of response information.

3. The wireless communication system according to claim 2, wherein the control unit of the base station device controls the multiplexing unit to regenerate a response information group corresponding to one subband of the uplink and arranges each regenerated response information group in multiple subbands of the downlink.

4. The wireless communication system according to claim 2, wherein the control unit of the base station device controls the multiplexing unit to arrange multiple response information groups corresponding to multiple subbands of the uplink in one subband of the downlink.

5. The wireless communication system according to claim 3, wherein:

the control unit of the mobile station device controls the demultiplexing unit to recognize the multiple subbands of the downlink and extracts the response information addressed to its own mobile station device from the recognized subbands,

the demultiplexing unit extracts the response information addressed to its own mobile station device from each subband based on the control of the control unit, and

the decoding unit performs decoding using all the response information addressed to its own mobile station device extracted by the demultiplexing unit.

6. The wireless communication system according to claim 4, wherein:

the control unit of the base station device generates response information group setting information including information indicating the number of the response information groups arranged in one subband of the downlink and information indicating the uplink subband corresponding to each of the multiple response information groups, and

the control unit of the mobile station device recognizes the number of the response information groups and the uplink subband corresponding to each of the multiple response information groups from the response information group setting information.

7. The wireless communication system according to claim 6, wherein the control unit of the base station device controls the multiplexing unit to arrange the response information group setting information in a channel arranged in a fixed unit among multiple units prescribed from a frequency domain and a time domain having predetermined widths within the downlink subband.

8. The wireless communication system according to claim 6, wherein the control unit of the base station device controls the multiplexing unit to arrange the response information group setting information in a channel arranged in a unit indicated by a control channel among multiple units prescribed from a frequency domain and a time domain having predetermined widths within the downlink subband.

9. The wireless communication system according to claim 4, wherein:

the control unit of the base station device controls the multiplexing unit to arrange the multiple response information groups, which are arranged in one subband of the downlink, in a unit selected according to a predetermined rule among multiple units prescribed from a frequency domain and a time domain having predetermined widths within the subband, and

the control unit of the mobile station device controls the demultiplexing unit to extract multiple response information groups arranged in one band of the downlink according to a predetermined rule.

10. The wireless communication system according to claim 4, wherein the control unit of the base station device controls the multiplexing unit to arrange the multiple response information groups, which are arranged in one subband of the downlink, in units which are continuous in a frequency direction among multiple units prescribed from a frequency domain and a time domain having predetermined widths within the subband.

11. The wireless communication system according to claim 4, wherein the control unit of the base station device controls the multiplexing unit to arrange the multiple response information groups, which are arranged in one subband of the downlink, in a response information group unit in units which are distributed in a frequency direction among multiple units prescribed from a frequency domain and a time domain having predetermined widths within the subband.

12. The wireless communication system according to claim 4, wherein:

the multiplexing unit of the base station device configures a result obtained by code-multiplexing multiple pieces of response information corresponding to multiple data arranged in the same subband of the uplink as a response information group, and

the control unit of the base station device controls the multiplexing unit to arrange the multiple response information groups in units which are continuous in a frequency direction among multiple units prescribed from a frequency domain and a time domain having predetermined widths within one subband of the downlink.

13. The wireless communication system according to claim 2, wherein the control unit of the base station device controls the multiplexing unit to arrange the response information group setting information in a channel arranged in a fixed unit among multiple units prescribed from a frequency domain and a time domain having predetermined widths within the downlink subband.

14. The wireless communication system according to claim 2, wherein the control unit of the base station device controls the multiplexing unit to arrange the response information group setting information in a channel arranged in a unit indicated by a control channel among multiple units prescribed from a frequency domain and a time domain having predetermined widths within the downlink subband.

15. The wireless communication system according to claim 2, wherein the control unit of the base station device:

controls the multiplexing unit to arrange information, which is part of the response information group setting information, indicating the number of the response information groups, which are arranged in one subband of the downlink, in a fixed unit among multiple units prescribed from a frequency domain and a time domain having predetermined widths within the downlink subband, and

controls the multiplexing unit to arrange information, which is part of the response information group setting information, indicating the uplink subband corresponding to the response information group in a channel arranged in a unit indicated by a control channel among the multiple units.

16. The wireless communication system according to claim 2, wherein the control unit of the base station device:

controls the multiplexing unit to arrange a response information group corresponding to the uplink subband in the downlink subband according to a predetermined rule, and

generates information indicating the number of the response information groups, which are arranged in the downlink subband, as the response information group setting information.

17. The wireless communication system according to claim 2, wherein the control unit of the base station device:

controls the multiplexing unit to arrange a predetermined number of pieces of response information in the downlink subband, and

generates information indicating the uplink subband corresponding to each response group as the response information group setting information.

18. A base station device, which allocates one or more subbands of each of an uplink and a downlink to a mobile station device and transmits response information, which indicates whether or not uplink data from the mobile station device has been properly received, to the mobile station device, the base station device comprising:

a control unit which controls an arrangement of a response information group including multiple pieces of response information directed to a downlink subband allocated to the mobile station device; and

a multiplexing unit which collects the same type of multiple pieces of response information to configure the response information group, and arranges the configured response information group in the downlink subband based on the control of the control unit.

19. The base station device according to claim 18, wherein the control unit further generates response information group setting information regarding an arrangement of the response information group.

20. A mobile station device, which transmits/receives data using one or more subbands allocated to each of a downlink and an uplink and receives response information, which indicates whether or not a base station device has properly received uplink data, from the base station device, the mobile station device comprising:

a control unit which recognizes a downlink subband in which a response information group is arranged based on response information group setting information regarding an arrangement of the response information group including multiple pieces of response information and controls extraction of the response information addressed to its own mobile station device from the recognized subband;

a demultiplexing unit which extracts the response information addressed to its own mobile station from the downlink subband based on the control of the control unit; and

a decoding unit which decodes the response information addressed to its own mobile station device extracted by the demultiplexing unit.

21. A wireless communication method for use in a base station device, which allocates one or more subbands of each of an uplink and a downlink to a mobile station device and transmits response information, which indicates whether or not uplink data from the mobile station device has been properly received, to the mobile station device, the wireless communication method comprising:

collecting the same type of multiple pieces of response information to configure the response information group;

controlling an arrangement of the response information group configured in the collection directed to a downlink subband allocated to the mobile station device; and

arranging the response information group configured in the collection in the downlink subband based on the control.

22. The wireless communication method according to claim 21, further comprising:

generating response information group setting information regarding the arrangement of the response information group.

23. A wireless communication method for use in a mobile station device, which transmits/receives data using one or more subbands allocated to each of a downlink and an uplink and receives response information, which indicates whether or not a base station device has properly received uplink data, from the base station device, the wireless communication method comprising:

recognizing a downlink subband in which a response information group is arranged based on response information group setting information regarding an arrangement of the response information group including multiple pieces of response information;

controlling extraction of the response information addressed to its own mobile station device from the subband recognized in the recognition;

extracting the response information addressed to its own mobile station from the downlink subband based on the control; and

decoding the response information addressed to its own mobile station device extracted in the extraction.