Apparatus and method for transmitting and receiving sounding signal in a wireless communication system

Patent metadata

Field	Value
Publication number	US-8982718-B2
Application number	US-201113020906-A
Country	US
Kind code	B2
Filing date	Feb 4, 2011
Priority date	Feb 5, 2010
Publication date	Mar 17, 2015
Grant date	Mar 17, 2015

Abstract

In a wireless communication system, at least one sounding subchannel determining parameter is transmitted from a sounding signal receiving apparatus to a sounding signal transmitting apparatus. A sounding subchannel for the sounding signal transmitting apparatus is allocated according to the sounding subchannel determining parameter. A sounding signal is received from the sounding signal transmitting apparatus over the allocated sounding subchannel. The sounding subchannel determining parameter is determined for allocating a sounding subchannel considering a frequency correlation.

First claim

What is claimed is:

1. A method for receiving a reference signal by a receiving apparatus in a communication system, the method comprising:
transmitting at least one parameter to a transmitting apparatus, the at least one parameter comprising a transmitting apparatus index for identifying a transmitting apparatus of a plurality of transmitting apparatuses, wherein the transmitting apparatus index designates a subchannel set solely for the transmitting apparatus; and
receiving a reference signal from the transmitting apparatus over a subchannel of the subchannel set designated solely for the transmitting apparatus,
wherein the at least one parameter is determined for allocating a subchannel based on a frequency correlation.

2. The method of claim 1 , wherein the at least one parameter further comprises a threshold.

3. The method of claim 1 , wherein the subchannel is allocated based on a subchannel set including subchannels to be used by the transmitting apparatus and a candidate subchannel set including subchannels selected by the transmitting apparatus among subchannels included in the subchannel set.

4. The method of claim 1 , wherein the at least one parameter further comprises an overhead index.

5. The method of claim 1 , further comprising:
estimating a channel based on the reference signal received from the transmitting apparatus; and
transmitting a signal based on a multi-sector cooperative scheme to the transmitting apparatus.

6. The method of claim 1 , wherein the subchannel is allocated based on the at least one parameter.

7. A method for transmitting a reference signal by a transmitting apparatus in a communication system, the method comprising:
receiving at least one parameter from a receiving apparatus, the at least one parameter comprising a transmitting apparatus index for identifying a transmitting apparatus of a plurality of transmitting apparatuses, wherein the transmitting apparatus index designates a subchannel set solely for the transmitting apparatus; and
transmitting a reference signal to the receiving apparatus over a subchannel of the subchannel set designated solely for the transmitting apparatus,
wherein the at least one parameter is determined for allocating a subchannel based on a frequency correlation.

8. The method of claim 7 , wherein the at least one parameter further comprises a threshold.

9. The method of claim 7 , wherein the subchannel is allocated based on a subchannel set including subchannels to be used by the transmitting apparatus and a candidate subchannel set including subchannels selected by the transmitting apparatus among subchannels included in the subchannel set.

10. The method of claim 7 , wherein the at least one parameter further comprises an overhead index.

11. The method of claim 7 , wherein transmitting the reference signal comprises selecting a subcarrier from among a set of subcarriers associated with the allocated subchannel.

12. The method of claim 7 , wherein the subchannel is allocated based on the at least one parameter.

13. A receiving apparatus in a communication system, the receiving apparatus comprising:
a transmitter configured to transmit at least one parameter to a transmitting apparatus, the at least one parameter comprising a transmitting apparatus index for identifying a transmitting apparatus of a plurality of transmitting apparatuses, wherein the transmitting apparatus index designates a subchannel set solely for the transmitting apparatus; and
a receiver configured to receive a reference signal from the transmitting apparatus over a subchannel of the subchannel set designated solely for the transmitting apparatus,
wherein the at least one parameter is determined for allocating a subchannel based on a frequency correlation.

14. The receiving apparatus of claim 13 , wherein the at least one parameter further comprises a threshold.

15. The receiving apparatus of claim 13 , wherein the subchannel is allocated based on a subchannel set including subchannels to be used by the transmitting apparatus, and a subchannel set including subchannels selected by the transmitting apparatus among subchannels included in the subchannel set.

16. The receiving apparatus of claim 13 , wherein the at least one parameter further comprises an overhead index.

17. The receiving apparatus of claim 13 , further comprising:
a controller configured to estimate a channel based on the reference signal received from the transmitting apparatus,
wherein the transmitter is further configured to transmit a signal based on a multi-sector cooperative scheme to the transmitting apparatus.

18. The receiving apparatus of claim 13 , wherein the subchannel is allocated based on the at least one parameter.

19. A transmitting apparatus in a communication system, the transmitting apparatus comprising:
a receiver configured to receive at least one parameter from a receiving apparatus, the at least one parameter comprising a transmitting apparatus index for identifying a transmitting apparatus of a plurality of transmitting apparatuses, wherein the transmitting apparatus index designates a subchannel set solely for the transmitting apparatus; and
a transmitter configured to transmit a reference signal to the receiving apparatus over a subchannel of the subchannel set designated solely for the transmitting apparatus,
wherein the at least one parameter is determined for allocating a subchannel based on a frequency correlation.

20. The transmitting apparatus of claim 19 , wherein the at least one parameter further comprises a threshold.

21. The transmitting apparatus of claim 19 , wherein the subchannel is allocated based on a subchannel set including subchannels to be used by the transmitting apparatus, and a candidate subchannel set including subchannels selected by the transmitting apparatus among subchannels included in the subchannel set.

22. The transmitting apparatus of claim 19 , wherein the at least one parameter further comprises an overhead index.

23. The transmitting apparatus of claim 19 , further comprising:
a controller configured to select a subcarrier from among a set of subcarriers associated with the allocated subchannel.

24. The transmitting apparatus of claim 19 , wherein the subchannel is allocated based on the at least one parameter.

Assignees

• Lee Yong-Hwan
• Kim Hyung-Sin
• Lee Seung-Hwan
• Samsung Electronics Co Ltd
• Univ Seoul Nat R & Db Found

Inventors

• Lee Yong-Hwan
• Kim Hyung-Sin
• Lee Seung-Hwan

Classifications

• H04L25/0256

  Channel estimation using minimum mean square error criteria · CPC title

• H04B7/024

  Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems · CPC title

• H04L5/0035

  Resource allocation in a cooperative multipoint environment · CPC title

• H04L25/0224

  using sounding signals · CPC title

• H04L5/0048 Primary

  Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091) · CPC title