Method and apparatus for transmitting uplink control channel in a mobile communication system

• US 8,588,153 B2
• Filed: 06/20/2008
• Issued: 11/19/2013
• Est. Priority Date: 06/20/2007
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kwon, Hwan-Joon, Cho, Joon-Young, Han, Jin-Kyu, Lee, Ju-Ho
• Primary Examiner(s): Phillips, Hassan
• Assistant Examiner(s): Sharma, Gautam
• Application Number:
  US12/665,886
• Publication Number:
  US 20100329196A1
• Time in Patent Office: 1,978 Days
• Field of Search: None
• US Class Current: 370/329
• CPC Class Codes: H04J 13/0062 Zadoff-Chu
• CPC Class Codes: H04J 13/18 Allocation of orthogonal codes
• CPC Class Codes: H04L 1/0027 Scheduling of signalling, e.g. occurrence thereof
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/0041 Frequency-non-contiguous
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0083 symbol-by-symbol
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated

Abstract

A method for transmitting an uplink control channel at a terminal in a Single Carrier Frequency Division Multiple Access (SC-FDMA)-based mobile communication system is provided. The transmission method includes receiving a control channel index allocated from a base station; transmitting control information at every symbol through a subband and a Zadoff-Chue sequence offset resource, which are mapped to the control channel index according to a first grouping rule; and transmitting control information through a subband and a Zadoff-Chue sequence offset resource, which are mapped to the control channel index according to a second grouping rule, beginning from a symbol after a slot boundary.

Claims

1. A method for transmitting an uplink control channel at a terminal in a Single Carrier Frequency Division Multiple Access (SC-FDMA)-based mobile communication system, the method comprising:

receiving a control channel index allocated from a base station;

transmitting control information at every symbol using a first subband and a first Zadoff-Chue sequence offset resource, the first subband and the first Zadoff-Chue sequence offset resource being mapped to the control channel index according to a first grouping rule; and

transmitting control information using a second subband and a second Zadoff-Chue sequence offset resource, the second subband and the second Zadoff-Chue sequence offset resource being mapped to the control channel index according to a second grouping rule, beginning from a symbol after a slot boundary.

2. The method of claim 1, wherein the first grouping rule permutes control channel indexes allocated to terminals according to a predetermined criterion, classifies the permuted control channel indexes into groups, a number of the groups being equal to a number of subbands available in a current slot, and maps the Zadoff-Chue sequence offset to the permuted control channel index in each of the groups.

3. The method of claim 2, wherein the second grouping rule re-permutes the control channel indexes in a different order from an order in which the control channel indexes are permuted according to the first grouping rule.

4. A method for receiving an uplink control channel at a base station in a Single Carrier Frequency Division Multiple Access (SC-FDMA)-based mobile communication system, the method comprising:

allocating control channel indexes to one or more terminals;

receiving control information at every symbol using a first subband and a first Zadoff-Chue sequence offset resource, the first subband and the first Zadoff-Chue sequence offset resource being mapped to the control channel index according to a first mapping rule; and

receiving control information transmitted using a second subband and a second Zadoff-Chue sequence offset resource, the second subband and the second Zadoff-Chue sequence offset resource being mapped to the control channel index according to a second mapping rule, beginning from a symbol after a slot boundary.

5. The method of claim 4, wherein the first grouping rule permutes control channel indexes allocated to the terminals according to a predetermined criterion, classifies the permuted control channel indexes into groups, a number of the groups being equal to a number of subbands available in a current slot, and maps the Zadoff-Chue sequence offset to the permuted control channel index in each of the groups.

6. The method of claim 5, wherein the second grouping rule re-permutes the control channel indexes in a different order from an order in which the control channel indexes are permuted according to the first grouping rule.

7. An apparatus for transmitting an uplink control channel at a terminal in a Single Carrier Frequency Division Multiple Access (SC-FDMA)-based mobile communication system, the apparatus comprising:

a transmission unit;

a reception unit for receiving a control channel index allocated from a base station; and

a controller for controlling the transmission unit so that control information is transmitted at every symbol using a first subband and a first Zadoff-Chue sequence offset resource, the first subband and the first Zadoff-Chue sequence offset resource being mapped to the control channel index according to a first grouping rule, and control information is transmitted using a second subband and a second Zadoff-Chue sequence offset resource, the second subband and the second Zadoff-Chue sequence offset resource being mapped to the control channel index according to a second grouping rule, beginning from a symbol after a slot boundary.

8. The apparatus of claim 7, wherein the first grouping rule permutes control channel indexes allocated to terminals according to a predetermined criterion, classifies the permuted control channel indexes into groups, a number of the groups being equal to a number of subbands available in a current slot, and maps the Zadoff-Chue sequence offset to the permuted control channel index in each of the groups.

9. The apparatus of claim 8, wherein the second grouping rule re-permutes the control channel indexes in a different order from an order in which the control channel indexes are permuted according to the first grouping rule.

10. An apparatus for receiving an uplink control channel at a base station in a Single Carrier Frequency Division Multiple Access (SC-FDMA)-based mobile communication system, the apparatus comprising:

a controller for allocating control channel indexes to one or more terminals;

a reception unit for receiving control information at every symbol transmitted using a first subband and a first Zadoff-Chue sequence offset resource, the first subband and the first Zadoff-Chue sequence offset resource being mapped to the control channel index according to a first grouping rule, and receiving control information transmitted using a second subband and a second Zadoff-Chue sequence offset resource, the second subband and the second Zadoff-Chue sequence offset resource being mapped to the control channel index according to a second grouping rule, beginning from a symbol after a slot boundary.

11. The apparatus of claim 10, wherein the first grouping rule permutes control channel indexes allocated to the terminals according to a predetermined criterion, classifies the permuted control channel indexes into groups, a number of the groups being equal to a number of subbands available in a current slot, and maps the Zadoff-Chue sequence offset to the permuted control channel index in each of the groups.

12. The apparatus of claim 11, wherein the second grouping rule re-permutes the control channel indexes in a different order from an order in which the control channel indexes are permuted according to the first grouping rule.