Method of allocating frequency subband and apparatus adopting the same

• US 20050068930A1
• Filed: 09/17/2004
• Published: 03/31/2005
• Est. Priority Date: 09/17/2003
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Choi, Hyong-uk, Choi, Yun-hwa
• Granted Patent: US 7,551,594 B2
• Time in Patent Office: Days
• US Class Current: 370/343
• CPC Class Codes: H04B 1/7163 using impulse radio
• CPC Class Codes: H04W 16/14 Spectrum sharing arrangements between different networks
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks

Abstract

A method of allocating frequency subbands in an ultrawideband (UWB) wireless communication system and an apparatus adopting the same are provided. The method of allocating frequency subbands to a device in a communication system, the method including: (a) determining whether usage of a first frequency band including upper frequency subbands is necessary; and (b) if it is determined that the usage of the first frequency band is necessary, not setting usage permission for the first frequency band to the device and not granting access to the first frequency band if a request for usage of the first frequency band is received from the device. When generation of a new piconet is necessary or generation of a new piconet is requested in a multi-piconet environment, since subbands of a high frequency group are allocated through negotiation, frequency resources are efficiently managed.

Claims

1. A method of allocating frequency subbands to a device in a communication system, the method comprising:

(a) determining whether a usage of a first frequency band including upper frequency subbands is necessary; and

(b) if it is determined that the usage of the first frequency band is necessary, not setting a usage permission for the first frequency band to the device and not granting access to the first frequency band although a request for the usage of the first frequency band is received from the device.

2. The method of claim 1, wherein step (b) further comprises:

if it is determined that the usage of the first frequency band is unnecessary, granting access to the first frequency band when a request for the usage of the first frequency band is received from the device.

3. The method of claim 1, wherein the communication system uses an ultrawideband.

9. A computer readable medium having recorded thereon a computer readable program for performing the method of claim 1.

4. A method of requesting frequency subband allocation in a communication system which uses frequency subbands at predetermined intervals, the method comprising:

(a) scanning subbands of a second frequency band including lower frequency subbands and determining whether all of the lower frequency subbands are used;

(b) if it is determined that all of the lower frequency subbands are used, a device of the communication system joins a piconet as a member;

(c) requesting a subband of a first frequency band including upper frequency subbands; and

(d) receiving a grant signal.

5. The method of claim 4, wherein the communication system uses an ultrawideband.

6. An apparatus that manages frequency subband allocation in a communication system which uses frequency subbands at predetermined intervals, the apparatus comprising:

a determining unit, which determines whether a usage of a first frequency band including upper frequency subbands is necessary; and

a negotiator, which, if it is determined that the usage of the first frequency band is necessary, does not set a usage permission for the first frequency band to a device or grants access to the first frequency band if a request for a usage of the first frequency band is received from the device.

7. The apparatus of claim 6, further comprising:

a scanner, which scans subbands of a second frequency band including lower frequency subbands.

8. The apparatus of claim 6, wherein the communication system uses an ultrawideband frequency band.