Wireless communication apparatus and frequency hopping method

• US 8,908,495 B2
• Filed: 03/03/2014
• Issued: 12/09/2014
• Est. Priority Date: 05/29/2009
• Status: Active Grant

• Current Assignee: Sun Patent Trust
• Original Assignee: Panasonic Intellectual Property Corporation of America (Panasonic Holdings Corporation)
• Inventors: Takaoka, Shinsuke, Imamura, Daichi, Nakao, Seigo
• Primary Examiner(s): PHUNKULH, BOB A
• Application Number:
  US14/195,628
• Publication Number:
  US 20140177580A1
• Time in Patent Office: 281 Days
• Field of Search: None
• US Class Current: 370/210
• CPC Class Codes: H04B 1/713 using frequency hopping
• CPC Class Codes: H04J 1/02 Details
• CPC Class Codes: H04L 27/2605 Symbol extensions, e.g. Zero Tail, Unique Word [UW]
• CPC Class Codes: H04L 5/0005 Time-frequency
• CPC Class Codes: H04L 5/0012 Hopping in multicarrier systems for frequency hopping in spread spectrum systems H04B1/713
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

Disclosed are a wireless communication apparatus and frequency hopping method which minimize the change in the instantaneous power distribution characteristics of the time waveform of transmission signals when a plurality of channels are multiplexed by frequency division. At a terminal (200), a mapping unit (212) maps the PUCCH to frequency resources of a first slot, maps the PUSCH to frequency resources, among the frequency resources of the first slot, separated exactly by predetermined frequency spacing (B) from the frequency resources to which the PUCCH is mapped, and cyclically shifts the frequencies so as to map the PUCCH and PUSCH to frequency resources, within an IDFT or IFFT bandwidth, of a second slot while maintaining the predetermined frequency spacing (B), thereby allowing frequency hopping of the PUCCH and PUSCH between the first slot and the second slot.

Claims

1. A base station apparatus communicating with a terminal configured with a plurality of downlink component carriers, the base station apparatus comprising:

a transmission section configured to transmit, to the terminal, downlink control information for each of the plurality of downlink component carriers; and

a reception section configured to receive a signal that is transmitted from the terminal on a frequency resource, the frequency resource including a first frequency resource and a second frequency resource of an uplink channel and being determined from resource information included in the downlink control information, with a frequency hopping between the first frequency resource in a first slot and the second frequency resource in a second slot within a sub frame,

wherein a frequency hopping interval between the first frequency resource and the second frequency resource that are determined from the resource information included in the downlink control information for one of the plurality of downlink component carriers is the same as that for another one of the plurality of downlink component carriers.

2. The base station apparatus according to claim 1, wherein the frequency hopping interval is common among the downlink control information for all of the plurality of component carriers, with which the terminal apparatus is configured.

3. The base station apparatus according to claim 1, wherein the transmission section is configured to transmit the downlink control information for the plurality of downlink component carriers, with which the terminal apparatus is configured, at the same time.

4. The base station apparatus according to claim 1, wherein the transmission section is configured to transmit the downlink control information for the plurality of downlink component carriers, with which the terminal apparatus is configured, at different times.

5. The base station apparatus according to claim 1, wherein the frequency resource is configured in advance.

6. The base station apparatus according to claim 5, wherein UE-specific signaling in a radio resource control (RRC) notifies the frequency resource in advance.

7. The base station apparatus according to claim 5, wherein the resource information indirectly or implicitly notifies the frequency resource.

8. The base station apparatus according to claim 1, wherein the resource information determines the frequency hopping interval between the first frequency resource and the second frequency resource.

9. The base station apparatus according to claim 1, wherein the frequency resource is a resource block.

10. The base station apparatus according to claim 1, wherein the uplink channel is an uplink control channel, and the reception section receives uplink control information as the signal.

11. The base station apparatus according to claim 10, wherein the uplink control information includes an ACK/NACK.

12. The base station apparatus according to claim 10, wherein the uplink control information includes at least two among an ACK/NACK, a scheduling request, and a channel state information (CSI).

13. A method for receiving a signal transmitted from a terminal configured with a plurality of downlink component carriers, the method comprising:

transmitting, to the terminal, downlink control information for each of the plurality of downlink component carriers; and

receiving a signal that is transmitted from the terminal on a frequency resource, the frequency resource including a first frequency resource and a second frequency resource of an uplink channel and being determined from resource information included in the downlink control information, with a frequency hopping between the first frequency resource in a first slot and the second frequency resource in a second slot within a subframe,

wherein a frequency hopping interval between the first frequency resource and the second frequency resource that are determined from the resource information included in the downlink control information for one of the plurality of downlink component carriers is the same as that for another one of the plurality of downlink component carriers.