ANTENNA SELECTING APPARATUS AND METHOD IN WIRELESS COMMUNICATION SYSTEM

• US 20100246547A1
• Filed: 03/24/2010
• Published: 09/30/2010
• Est. Priority Date: 03/26/2009
• Status: Abandoned Application

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: YOON, Young-Suk
• Application Number:
  US12/730,306
• Publication Number:
  US 20100246547A1
• Time in Patent Office: Days
• US Class Current: 370/338
• CPC Class Codes: H01Q 3/24 varying the orientation by switching energy from one active radiating element to another, e.g. for beam switching
• CPC Class Codes: H04L 1/1671 the supervisory signal being transmitted together with control information
• CPC Class Codes: H04W 40/06 based on characteristics of available antennas
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

Provided is a reception antenna selecting method of a receiver including a plurality of antennas in a wireless communication system. The reception antenna selecting method aligns amplified frames according to levels of received signals and performs CRC for each of the aligned frames.

Claims

1. A method of selecting a reception antenna of a receiver having a plurality of antennas in a wireless communication system, the method comprising:

receiving a plurality of frames via the plurality of antennas;

amplifying each frame at a predetermined amplification rate based on respective reception angle of the plurality of antennas;

aligning amplified frames according to strength levels of received signals; and

performing Cyclic Redundancy Check (CRC) for each of the aligned frames.

2. The method of claim 1, further comprising:

before aligning the amplified frames,

searching locations of preambles in the amplified frames.

3. The method of claim 1, further comprising:

selecting a first antenna that received a frame showing a normal CRC as the reception antenna.

4. The method of claim 1, further comprising:

selecting an antenna that has a received signal having the highest strength level among the plurality of antennas that received frames showing normal CRC, as the reception antenna.

5. The method of claim 1, wherein performing the CRC comprises:

searching a location of CRC based on the location of the preamble;

acquiring a CRC data in the searched location of CRC; and

performing the CRC for the acquired CRC data.

6. An apparatus for selecting a reception antenna of a receiver in a wireless communication system, comprising:

a plurality of antennas for amplifying a plurality of frames at a predetermined amplification rate based on respective reception angle of the plurality of antennas;

a correlation value-based antenna aligner for aligning the amplified frames according to levels of received signals; and

a Cyclic Redundancy Check (CRC) checker for performing CRC for each of the aligned frames.

7. The apparatus of claim 6, further comprising:

a preamble correlator for searching locations of preambles in the amplified frames.

8. The apparatus of claim 6, further comprising:

a first antenna selector for selecting a first antenna that received a frame showing a normal CRC, as the reception antenna.

9. The apparatus of claim 6, further comprising:

a second antenna selector selecting an antenna that has a received signal having the highest strength level among the plurality of antennas that received frames showing a normal CRC as the reception antenna.

10. The apparatus of claim 7, wherein the CRC determiner searches a location of CRC based on the location of the preamble, acquires a CRC data in the searched location of CRC, and performs the CRC for the CRC data.

11. An access point comprising:

a network interface for communicating with at least one wide area network;

a plurality of antennas for amplifying a plurality of frames from a plurality of client devices over the wireless link;

a processor for aligning the amplified frames according to strength levels of received signals, for performing CRC for each of the aligned frames, and for determining the reception antenna based on a reception characteristic of a frame that shows correlation values corresponding to the highest strength level.

12. The access point of claim 11, wherein the processor further searches locations of preambles in the amplified frames.

13. The access point of claim 12, wherein the processor further searches a location of CRC based on the location of the preamble, acquires a CRC data in the searched location of CRC, and performs the CRC for the CRC data.