Method and apparatus for frequency assignment in a frequency hopping mode of a wireless communication system

• US 8,619,834 B2
• Filed: 09/10/2012
• Issued: 12/31/2013
• Est. Priority Date: 12/23/2008
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Ro, Sang Min, Heo, Youn H.
• Primary Examiner(s): PHU, PHUONG M
• Application Number:
  US13/608,615
• Publication Number:
  US 20130010832A1
• Time in Patent Office: 477 Days
• Field of Search: 375/260, 375/267, 375/299, 375/347, 375/132, 375/135, 375/136, 370/330, 455/500, 455/101
• US Class Current: 375/132
• CPC Class Codes: H04B 1/713 using frequency hopping
• CPC Class Codes: H04B 1/7136 Arrangements for generation of hop frequencies, e.g. using a bank of frequency sources, using continuous tuning or using a transform
• CPC Class Codes: H04B 1/7143 Arrangements for generation of hop patterns
• CPC Class Codes: H04L 1/08 by repeating transmission, e.g. Verdan system H04L1/1858 and H04L1/189 take precedence
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04W 72/04 Wireless resource allocation

Abstract

A frequency allocation method and apparatus using a mirroring-assisted frequency hopping pattern is provided for retransmission in a wireless communication system operating in a frequency hopping mode. A frequency mapping method for a wireless communication system operating in a frequency hopping mode includes determining whether or not mirroring is used in accordance with a number of packet transmissions; mapping a frequency resource for a packet transmission based on a result of the determination; and receiving a packet using the mapped frequency resource.

Claims

1. A frequency mapping method for a wireless communication system operating in a frequency hopping mode, comprising:

determining, by a frequency mapper, whether or not mirroring is used in accordance with a number of packet transmissions;

mapping, by the frequency mapper, a frequency resource for a packet transmission based on a result of the determination; and

receiving, by a communication unit, a packet using the mapped frequency resource.

2. The frequency mapping method of claim 1, determining whether or not mirroring is used comprises determining whether or not mirroring is used alternately in accordance with the number of packet transmissions.

3. The frequency mapping method of claim 1, wherein whether or not mirroring is used is determined by f_m(j), and for an i^th subframe of a k^th radio frame f_m(j) is defined by:

f_m(j)=└

j/M┘

mod 2,

where j=p*k+i, p is a number of subframes of a radio frame, and M is a data retransmission interval measured in number of subframes.

4. The frequency mapping method of claim 3, wherein mapping the frequency resource for the packet transmission comprises:

mapping the frequency resource for the i^th subframe of the k^th radio frame using mirroring, if f_m(j) is 1; and

mapping the frequency resource for the i^th subframe of the k^th radio frame without using mirroring, if f_m(j) is 0.

5. The frequency mapping method of claim 3, wherein p is 10 and M is 8.

6. A reception apparatus for a wireless communication system operating in a frequency hopping mode, comprising:

a frequency mapper that determines whether or not mirroring is used in accordance with a number of packet transmissions, and maps a frequency resource for a packet transmission based on a result of the determining; and

a communication unit that receives a packet using the mapped frequency resource.

7. The reception apparatus of claim 6, wherein the frequency mapper determines whether or not mirroring is used alternately in accordance with the number of packet transmissions.

8. The reception apparatus of claim 6, wherein whether or not mirroring is used is determined by f_m(j), and for an i^th subframe of a k^th radio frame f_m(j) is defined by:

f_m(j)=└

j/M┘

mod 2,

where j=p*k+i, p is a number of subframes of a radio frame, and M is a data retransmission interval measured in number of subframes.

9. The reception apparatus of claim 8, wherein the frequency mapper maps the frequency resource for the i^th subframe of the k^th radio frame using mirroring, if f_m(j) is 1, and maps the frequency resource for the i^th subframe of the k^th radio frame without using mirroring, if f_m(j) is 0.

10. The reception apparatus of claim 8, wherein p is 10 and M is 8.

11. A frequency mapping method for a wireless communication system operating in a frequency hopping mode, comprising:

determining, by a frequency mapper, whether or not mirroring is used in accordance with a number of packet transmissions;

mapping, by the frequency mapper, a frequency resource for a packet transmission based on a result of the determination; and

transmitting, by a communication unit, a packet using the mapped frequency resource.

12. The frequency mapping method of claim 11, determining whether or not mirroring is used comprises determining whether or not mirroring is used alternately in accordance with the number of packet transmissions.

13. The frequency mapping method of claim 11, wherein whether or not mirroring is used is determined by f_m(j), and for an i^th subframe of a k^th radio frame f_m(j) is defined by:

f_m(j)=└

j/M┘

mod 2,

where j=p*k+i, p is a number of subframes of a radio frame, and M is a data retransmission interval measured in number of subframes.

14. The frequency mapping method of claim 13, wherein mapping the frequency resource for the packet transmission comprises:

mapping the frequency resource for the i^th subframe of the k^th radio frame using mirroring, if f_m(j) is 1; and

mapping the frequency resource for the i^th subframe of the k^th radio frame without using mirroring, if f_m(j) is 0.

15. The frequency mapping method of claim 13, wherein p is 10 and M is 8.

16. A transmission apparatus for a wireless communication system operating in a frequency hopping mode, comprising:

a frequency mapper that determines whether or not mirroring is used in accordance with a number of packet transmissions, and maps a frequency resource for a packet transmission based on a result of the determining; and

a communication unit that transmits a packet using the mapped frequency resource.

17. The reception apparatus of claim 16, wherein the frequency mapper determines whether or not mirroring is used alternately in accordance with the number of packet transmissions.

18. The transmission apparatus of claim 16, wherein whether or not mirroring is used is determined by f_m(j), and for an i^th subframe of a k^th radio frame f_m(j) is defined by:

f_m(j)=└

j/M┘

mod 2,

where j=p*k+i, p is a number of subframes of a radio frame, and M is a data retransmission interval measured in number of subframes.

19. The transmission apparatus of claim 18, wherein the frequency mapper maps the frequency resource for the i^th subframe of the k^th radio frame using mirroring, if f_m(j) is 1, and maps the frequency resource for the i^th subframe of the k^th radio frame without using mirroring, if f_m(j) is 0.

20. The transmission apparatus of claim 18, wherein p is 10 and M is 8.