Apparatus and method for transmitting and receiving data using an antenna array in a mobile communication system

• US 20030060173A1
• Filed: 08/16/2002
• Published: 03/27/2003
• Est. Priority Date: 08/18/2001
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Hun-Kee, Kim, Sung-Jin, Lee, Yong-Suk, Lee, Jong-Hyeuk, Park, Sang-Hwan
• Granted Patent: US 7,260,366 B2
• Time in Patent Office: Days
• US Class Current: 455/103
• CPC Class Codes: H04B 7/061 using feedback from receiving side
• CPC Class Codes: H04B 7/08 at the receiving station
• CPC Class Codes: H04L 1/0003 by switching between different modulation schemes
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 1/0041 Arrangements at the transmitter end
• CPC Class Codes: H04L 1/007 Unequal error protection for format H04L1/0078; for codes per se H03M13/35
• CPC Class Codes: H04L 1/0071 Use of interleaving interleaving per se H03M13/27
• CPC Class Codes: H04L 1/06 using space diversity
• CPC Class Codes: H04L 2001/0096 Channel splitting in point-to-point links
• CPC Class Codes: H04W 72/542 using measured or perceived quality
• CPC Class Codes: H04W 72/56 based on priority criteria

Abstract

A data transmitting/receiving apparatus and method using an antenna array in a mobile communication system. A Node B measures a transmission status of each transmission antenna, classifies transmission data according to priority, and transmits to a UE high-priority data through a transmission antenna at a relatively good transmission status and low-priority data through a transmission antenna at a relatively poor transmission status.

Claims

1. A method of transmitting data from a transmitter having a plurality of first antennas to a receiver having a plurality of second antennas on a plurality of radio channels in a mobile communication system, comprising the steps of:

determining statuses of the radio channels; and

transmitting high-priority data through first antennas having relatively good channel statuses and low-priority data through first antennas having relatively poor channel statuses.

2. The method of claim 1, wherein the radio channels are downlink channels.

3. The method of claim 1, wherein the transmitter determines the statuses of the radio channels and transmits information about the Channel statuses to the receiver.

4. The method of claim 1, wherein the receiver determines the statuses of the radio channels and feeds back information about the channel statuses to the transmitter.

5. The method of claim 1, further comprising the steps of classifying data received from the second antennas according to the channel statuses and demodulating the classified data in the receiver.

6. The method of claim 1, wherein the high-priority data is systematic coded bits and the low-priority data is parity coded bits.

7. An apparatus for transmitting data from a transmitter including a plurality of first antennas to a receiver including a plurality of second antennas on a plurality of radio channels in a mobile communication system, comprising:

a channel estimator for determining statuses of the plurality of radio channels; and

a transmission antenna assigner for transmitting high-priority data through first antennas having relatively good channel statuses and low-priority data through first antennas having relatively poor channel statuses.

8. The apparatus of claim 7, wherein the radio channels are downlink channels.

9. The apparatus of claim 7, further comprising a transmission status information transmitter for transmitting information about the channel statuses to the receiver.

10. The apparatus of claim 7, further comprising a transmission status information receiver for receiving information about the channel statuses from the receiver.

11. The apparatus of claim 7, wherein the high-priority data is systematic coded bits and the low-priority data is parity coded bits.

12. The apparatus of claim 7, further comprising an interleaver for separately interleaving the high-priority data and the low-priority data.

13. The apparatus of claim 12, further comprising a modulator for separately modulating the interleaved high-priority data and the interleaved low-priority data.

14. The apparatus of claim 13, wherein the modulator modulates the interleaved high-priority data and the interleaved low-priority data in different modulation schemes.

15. A method of receiving at a receiver including a plurality of second antennas from a transmitter including a plurality of first antennas on a plurality of radio channels in a mobile communication system, comprising the steps of:

determining statuses of the radio channels; and

classifying high-priority data and low-priority data received through the second antennas according to the channel statuses and demodulating the high-priority data and the low-priority data.

16. The method of claim 15, wherein the radio channels are downlink channels.

17. The method of claim 15, wherein the transmitter determines the statuses of the radio channels and transmits information about the channel statuses to the receiver.

18. The method of claim 15, wherein the receiver determines the statuses of the radio channels and feeds back information about the channel statuses to the transmitter.

19. The method of claim 15, wherein the high-priority data is systematic coded bits and the low-priority data is parity coded bits.

20. An apparatus for receiving data at a receiver including a plurality of second antennas from a transmitter including a plurality of first antennas on a plurality of radio channels in a mobile communication system, comprising:

a channel estimator for determining statuses of the radio channels;

a transmission antenna assigner for classifying high-priority data and low-priority data received through the second antennas according to the channel statuses; and

a demodulator for demodulating the high-priority data and the low-priority data separately.

21. The apparatus of claim 20, wherein the radio channels are downlink channels.

22. The apparatus of claim 20, further comprising a feedback information generator for generating feedback information indicating the channel statuses in a predetermined format;

and

a feedback channel information transmitter for transmitting the feedback information to the transmitter.

23. The apparatus of claim 20, further comprising a transmission status information receiver for receiving information about the channel statuses from the transmitter.

24. The apparatus of claim 20, wherein the high-priority data is systematic coded bits and the low-priority data is parity coded bits.

25. The apparatus of claim 20, further comprising a deinterleaver for separately deinterleaving the high-priority data and the low-priority data.

26. The apparatus of claim 20, wherein the demodulator demodulates the high-priority data and the low-priority data in different demodulation schemes.