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

• US 8,265,119 B2
• Filed: 11/05/2009
• Issued: 09/11/2012
• Est. Priority Date: 12/23/2008
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Heo, Youn H., Ro, Sang Min
• Primary Examiner(s): Phu, Phuong
• Application Number:
  US12/613,242
• Publication Number:
  US 20100158078A1
• Time in Patent Office: 1,041 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 frequency hopping mode. A frequency allocation method for a wireless communication system operating in frequency hopping mode includes generating a mirroring pattern having a mirroring-assisted frequency hopping interval identical with a data retransmission interval; and allocating different frequency bands for an initial transmission and retransmission by performing frequency hopping according to the mirroring pattern. Preferably, the mirroring-assisted frequency hopping interval is shorter than the data retransmission interval.

Claims

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

determining whether mirroring is used or not, the mirroring being determined to be used and not to be used alternately in accordance with a number of packet transmissions;

allocating a frequency resource for a packet transmission based on a result of the determination; and

receiving a packet using the allocated frequency resource.

2. The frequency allocation method of claim 1, wherein whether mirroring is used or not 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.

3. The frequency allocation method of claim 2, wherein allocating frequency resource for a packet transmission comprises:

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

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

4. The frequency allocation method of claim 2, wherein p is 10 and M is 8.

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

a frequency allocator which determines whether mirroring is used or not, the mirroring being determined to be used and not to be used alternately in accordance with a number of packet transmissions, and allocates frequency resource for a packet transmission based on a result of the determining; and

a communication unit for receiving a packet using the allocated frequency resource.

6. The reception apparatus of claim 5, wherein whether mirroring is used or not 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.

7. The reception apparatus of claim 6,

wherein the frequency allocator allocates, if f_m(j) is 1, frequency resource for an i^th subframe of a k^th radio frame using mirroring, and allocates, if f_m(j) is 0, frequency resource for an i^th subframe of a k^th radio frame without using mirroring.

8. The reception apparatus of claim 6, wherein p is 10 and M is 8.

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

determining whether mirroring is used or not, the mirroring being determined to be used and not to be used alternately in accordance with a number of packet transmissions;

allocating frequency resource for a packet transmission based on a result of the determination; and

transmitting a packet using the allocated frequency resource.

10. The frequency allocation method of claim 9, wherein whether mirroring is used or not 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.

11. The frequency allocation method of claim 10, wherein allocating frequency resource for a packet transmission comprises:

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

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

12. The frequency allocation method of claim 10, wherein p is 10 and M is 8.

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

a frequency allocator which determines whether mirroring is used or not, the mirroring being determined to be used and not to be used alternately in accordance with a number of packet transmissions, and allocates frequency resource for a packet transmission based on a result of the determining; and

a communication unit for transmitting a packet using the allocated frequency resource.

14. The transmission apparatus of claim 13, wherein whether mirroring is used or not 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.

15. The transmission apparatus of claim 14,

wherein the frequency allocator allocates, if f_m(j) is 1, frequency resource for an i^th subframe of a k^th radio frame using mirroring, and allocates, if f_m(j) is 0, frequency resource for an i^th subframe of a k^th radio frame without using mirroring.

16. The transmission apparatus of claim 14, wherein p is 10 and M is 8.