USER EQUIPMENT, BASE STATION APPARATUS, AND METHOD

• US 20100002655A1
• Filed: 12/26/2007
• Published: 01/07/2010
• Est. Priority Date: 01/09/2007
• Status: Active Grant

• Current Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Original Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Inventors: Umesh, Anil, Sawahashi, Mamoru, Ofuji, Yoshiaki, Higuchi, Kenichi
• Granted Patent: US 7,974,177 B2
• Time in Patent Office: Days
• US Class Current: 370/335
• CPC Class Codes: H04J 13/0059 CAZAC [constant-amplitude and zero auto-correlation]
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 1/1692 Physical properties of the supervisory signal, e.g. acknowledgement by energy bursts
• CPC Class Codes: H04L 1/1854 Scheduling and prioritising arrangements
• 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 5/0044 allocation of payload
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0064 Rate requirement of the data, e.g. scalable bandwidth, data priority
• CPC Class Codes: H04L 5/0091 Signaling for the administration of the divided path
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network

Abstract

User equipment that is capable of transmitting at least an uplink control channel to a base station apparatus using a single carrier method and to which persistent scheduling is applied, the user equipment includes a unit providing data arrival acknowledgement information, a unit providing channel quality information, a control channel generation unit generating an uplink control channel including at least one of the data arrival acknowledgement information or the channel quality information, and a transmission unit transmitting the uplink control channel using a predetermined dedicated bandwidth, in which the uplink control channel includes at least one unit block including a sequence in which a same factor reported using an upper-layer signaling is multiplied to each chip of an orthogonal code sequence for the user equipment.

Claims

1. A user equipment that is capable of transmitting at least an uplink control channel to a base station apparatus using a single carrier method and to which persistent scheduling in which a predetermined radio resource is periodically allocated in advance is applied, the user equipment comprising:

a first providing unit configured to provide data arrival acknowledgement information indicating an acknowledgement response or a negative acknowledgement response as a response to a downlink data channel;

a second providing unit configured to provide channel quality information indicating downlink channel quality;

a control channel generation unit configured to generate an uplink control channel including at least one of the data arrival acknowledgement information or the channel quality information;

a transmission unit configured to, when a resource for transmitting an uplink data channel is not allocated, transmit the uplink control channel using a predetermined dedicated frequency band, wherein

the uplink control channel includes at least one unit block including a sequence in which a same factor reported using an upper-layer signaling is multiplied to each chip of an orthogonal code sequence for the user equipment.

2. The user equipment according to claim 1, wherein

the orthogonal code sequence is a CAZAC code sequence.

3. The user equipment according to claim 1, wherein

the factor is either +1 or −

1.

4. The user equipment according to claim 1, wherein

a content indicated by the data arrival acknowledgement information is expressed by a group of factors multiplied to each of one or more unit blocks.

5. The user equipment according to claim 4, wherein

a factor multiplied to a part of plural unit blocks represents the data arrival acknowledgement information, and

a factor multiplied to another part of plural unit blocks represents the channel quality information.

6. The user equipment according to claim 1, wherein

each bit representing the channel quality information is expressed by a group of factors to be multiplied to each of plural unit blocks.

7. The user equipment according to claim 6, wherein

the number of unit blocks corresponding to a higher bit is equal to or greater than the number of unit blocks corresponding to a lower bit.

8. The user equipment according to claim 1, wherein

a factor reported to the user equipment is different from a factor reported to any other user equipment, the user equipment and the any other user equipment transmitting their upper control channels within a same TTI.

9. The user equipment according to claim 1, wherein

a group of factors multiplied to each of plural unit blocks having a same content indicate an orthogonal code sequence.

10. A method used in user equipment that is capable of transmitting at least an uplink control channel to a base station apparatus using a single carrier method and to which persistent scheduling in which a predetermined radio resource is periodically allocated in advance is applied, the method comprising:

a generating step of generating an uplink control channel including at least one of data arrival acknowledgement information or channel quality information, the data arrival acknowledgement information indicating an acknowledgement response or a negative acknowledgement response as a response to a downlink data channel, the channel quality information indicating downlink channel quality; and

a transmitting step of, when a resource for transmitting an uplink data channel is not allocated, transmitting the uplink control channel using a predetermined dedicated frequency band, wherein

the uplink control channel includes at least one unit block including a sequence in which a same factor reported using an upper-layer signaling is multiplied to each chip of an orthogonal code sequence for the user equipment.

11. A base station apparatus capable of receiving at least an uplink control channel using a single carrier method from plural user equipment, a persistent scheduling in which a predetermined radio resource is periodically allocated in advance being applied to each of the plural user equipment, the base station comprising:

an detection unit configured to detect at least one of data arrival acknowledgement information or channel quality information, the data arrival acknowledgement information indicating an acknowledgement response or a negative acknowledgement response as a response to a downlink data channel, the channel quality information indicating downlink channel quality;

a scheduling unit configured to perform scheduling for new packet data or retransmission packet data based on the channel quality information and the data arrival acknowledgement information;

a transmission unit configured to transmit the new packet data or the retransmission packet data via a downlink data channel;

a code information setting unit configured to set a code resource for transmitting the data arrival acknowledgement information and the channel quality information; and

a report unit configured to report the code resource, wherein

the uplink control channel includes at least one unit block including a sequence in which a same factor included in the code resource is multiplied to each chip of an orthogonal code sequence for the user equipment, and

the detection unit specifies at least one content of the data arrival acknowledgement information or the channel quality information by determining a factor multiplexed to each of the unit blocks.

12. The base station apparatus according to claim 11, wherein

the orthogonal code sequence is a CAZAC code sequence.

13. The user equipment according to claim 11, wherein

the code information setting unit sets different code resources to plural user equipment transmitting the uplink control channel within a same TTI.

14. The user equipment according to claim 13, wherein

a group of factors multiplied to each of plural unit blocks having a same content indicate an orthogonal code sequence.

15. A method used in a base station apparatus capable of receiving at least an uplink control channel using a single carrier method from plural user equipment, a persistent scheduling in which a predetermined radio resource is periodically allocated in advance being applied to each of the plural user equipment, the method comprising:

an detection step of detecting at least one of data arrival acknowledgement information or channel quality information, the data arrival acknowledgement information indicating an acknowledgement response or a negative acknowledgement response as a response to a downlink data channel, the channel quality information indicating downlink channel quality;

a scheduling step of performing scheduling for new packet data or retransmission packet data based on the channel quality information and the data arrival acknowledgement information;

a transmission step of transmitting the new packet data or the retransmission packet data via a downlink data channel;

a code information setting step of setting a code resource for transmitting the data arrival acknowledgement information and the channel quality information; and

a report step of reporting the code resource, wherein

the uplink control channel includes at least one unit block including a sequence in which a same factor included in the code resource is multiplied to each chip of an orthogonal code sequence for the user equipment, and

in the detection step, at least one content of the data arrival acknowledgement information or the channel quality information is specified by determining a factor multiplexed to each of the unit blocks.

16. A user equipment that is capable of transmitting at least an uplink control channel to a base station apparatus using a single carrier method and to which persistent scheduling in which a predetermined radio resource is periodically allocated in advance is applied, the user equipment comprising:

a first providing unit configured to provide data arrival acknowledgement information indicating an acknowledgement response or a negative acknowledgement response as a response to a downlink data channel;

a second providing unit configured to provide channel quality information indicating downlink channel quality;

a control channel generation unit configured to generate an uplink control channel including at least one of the data arrival acknowledgement information or the channel quality information;

a transmission unit configured to, when a resource for transmitting an uplink data channel is not allocated, transmit the uplink control channel using a predetermined dedicated bandwidth, wherein

in the uplink control channel including the data arrival acknowledgement information, a group of factors to be multiplied to each of plural unit blocks including a sequence in which a same factor reported using an upper-layer signaling is multiplied to each chip of an orthogonal code sequence for the user equipment indicate an orthogonal code sequence, and

the uplink control channel including the channel quality information includes at least one of plural unit blocks including a sequence in which a factor different from the factor reported using the upper-layer signaling is multiplied to each chip of an orthogonal code sequence for the user equipment.

17. A method used in user equipment that is capable of transmitting at least an uplink control channel to a base station apparatus using a single carrier method and to which persistent scheduling in which a predetermined radio resource is periodically allocated in advance is applied, the method comprising:

a generating step of generating an uplink control channel including at least one of the data arrival acknowledgement information or the channel quality information, the data arrival acknowledgement information indicating an acknowledgement response or a negative acknowledgement response as a response to a downlink data channel, the channel quality information indicating downlink channel quality; and

a transmitting step of, when a resource for transmitting an uplink data channel is not allocated, transmitting the uplink control channel using a predetermined dedicated bandwidth, wherein

in the uplink control channel including the data arrival acknowledgement information, a group of factors to be multiplied to each of plural unit blocks including a sequence in which a same factor reported using an upper-layer signaling is multiplied to each chip of an orthogonal code sequence for the user equipment indicate an orthogonal code sequence, and

the uplink control channel including the channel quality information includes at least one of plural unit blocks including a sequence in which a factor different from the factor reported using the upper-layer signaling is multiplied to each chip of an orthogonal code sequence for the user equipment.

18. A base station apparatus capable of receiving at least an uplink control channel using a single carrier method from plural user equipment, a persistent scheduling in which a predetermined radio resource is periodically allocated in advance being applied to each of the plural user equipment, the base station comprising:

an detection unit configured to detect at least one of data arrival acknowledgement information or channel quality information, the data arrival acknowledgement information indicating an acknowledgement response or a negative acknowledgement response as a response to a downlink data channel, the channel quality information indicating downlink channel quality;

a scheduling unit configured to perform scheduling for new packet data or retransmission packet data based on the channel quality information and the data arrival acknowledgement information;

a transmission unit configured to transmit the new packet data or the retransmission packet data via a downlink data channel;

a code information setting unit configured to set a code resource for transmitting the data arrival acknowledgement information and the channel quality information; and

a report unit configured to report the code resource, wherein

the code information setting unit sets two types of a code resources, one of which being for transmitting the data arrival acknowledgement information, and the other of which being for transmitting the channel quality information,

in the uplink control channel including the data arrival acknowledgement information, a group of factors to be multiplied to each of plural unit blocks including a sequence in which a same factor reported using an upper-layer signaling is multiplied to each chip of an orthogonal code sequence for the user equipment indicate an orthogonal code sequence,

the uplink control channel including the channel quality information includes at least one of plural unit blocks including a sequence in which a factor different from the factor reported using the upper-layer signaling is multiplied to each chip of an orthogonal code sequence for the user equipment, and

the detection unit specifies at least one content of the data arrival acknowledgement information or the channel quality information by determining the different factor multiplexed to each of the unit blocks.

19. A method used in user equipment that is capable of transmitting at least an uplink control channel to a base station apparatus using a single carrier method and to which persistent scheduling in which a predetermined radio resource is periodically allocated in advance is applied, the method comprising:

an detection step of detecting at least one of the data arrival acknowledgement information or the channel quality information, the data arrival acknowledgement information indicating an acknowledgement response or a negative acknowledgement response as a response to a downlink data channel, the channel quality information indicating downlink channel quality;

a scheduling step of performing scheduling for new packet data or retransmission packet data based on the channel quality information and the data arrival acknowledgement information;

a transmission step of transmitting the new packet data or the retransmission packet data via a downlink data channel;

a code information setting step of setting a code resource for transmitting the data arrival acknowledgement information and the channel quality information; and

a report step of reporting the code resource, wherein

in the code information setting step, two types of a code resources are provided, one of which being for transmitting the data arrival acknowledgement information, and the other of which being for transmitting the channel quality information,

in the uplink control channel including the data arrival acknowledgement information, a group of factors to be multiplied to each of plural unit blocks including a sequence in which a same factor reported using an upper-layer signaling is multiplied to each chip of an orthogonal code sequence for the user equipment indicate an orthogonal code sequence,

the uplink control channel including the channel quality information includes at least one of plural unit blocks including a sequence in which a factor different from the factor reported using the upper-layer signaling is multiplied to each chip of an orthogonal code sequence for the user equipment, and

in the detection step, at least one content of the data arrival acknowledgement information or the channel quality information is specified by determining the different factor multiplexed to each of the unit blocks.