Communication method of a base station and a terminal

Patent metadata

Field	Value
Publication number	US-9445423-B2
Application number	US-201113298736-A
Country	US
Kind code	B2
Filing date	Nov 17, 2011
Priority date	Dec 21, 2010
Publication date	Sep 13, 2016
Grant date	Sep 13, 2016

Abstract

Provided is a communication method of a base station and a terminal for enhancing a recovery performance of a signal using a feedback control message. The feedback control message may include information about a target received power at the base station with respect to feedback information of each of a plurality of terminals and information associated with a feedback mode of the feedback information.

First claim

What is claimed is:

1. A communication method of a base station, the method comprising:
transmitting a feedback control message comprising information about a target received power of feedback information of each of a plurality of terminals which is received at the base station, the target received power having a minimum value set for the base station;
receiving a channel quality indicator of each of the plurality of terminals transmitted with respect to the target received power and information associated with a feedback mode of the feedback information included in the feedback control message; and
performing scheduling with respect to the plurality of terminals based on the channel quality indicator of each of the plurality of terminals,
wherein the feedback mode indicates whether a compressed sensing resource block defined in advance for a compressed sensing is allocated to the plurality of terminals or whether another resource is allocated to each of the plurality of terminals by the base station, and
wherein the feedback mode includes at least one of a third mode in which the base station allocates a compressed sensing resource block defined in advance to a terminal capable of satisfying the target received power, and allocates an orthogonal resource to a terminal incapable of satisfying the target received power, and a fourth mode in which each of the plurality of terminals separately determines a resource to be used based on whether each of the plurality of terminals is capable of satisfying the target received power.

2. The method of claim 1 , wherein the feedback control message comprises at least one of information associated with a feedback mode of the feedback information, information about a compressed sensing resource block that is defined in advance for a compressed sensing allocated to the plurality of terminals, information about the target received power of the feedback information of each of the plurality of terminals which is received at the base station, and information about a threshold value of the channel quality indicator.

3. The method of claim 1 , wherein the feedback mode includes at least one of a first mode in which the base station allocates an orthogonal resource to each of the plurality of terminals, and a second mode in which the base station allocates a compressed sensing resource block defined in advance for compressed sensing to each of the plurality of terminals.

4. The method of claim 3 , wherein the fourth mode uses the compressed sensing resource block defined in advance if each of the plurality of terminals is capable of satisfying the target received power, and determines a resource to be used by a random access if each of the plurality of terminals is incapable of satisfying the target received power.

5. The method of claim 3 , further comprising:
adjusting a size of the compressed sensing resource block defined in advance, based on a number of the plurality of terminals that are simultaneously accessing the base station.

6. The method of claim 1 , further comprising:
broadcasting information about the target received power or information about a periodic average channel gain to each of the plurality of terminals.

7. The method of claim 1 , further comprising:
determining the feedback mode based on a type of feedback information received from the plurality of terminals,
wherein the type of feedback information includes at least one of a channel quality indicator with respect to each of the plurality of terminals, information about a battery status of each of the plurality of terminals, information about a service, and information about a buffer status.

8. The method of claim 1 , further comprising:
adjusting a value of the target received power at the base station with respect to feedback information of each of the plurality of terminals, based on traffic that is fed back from each of the plurality of terminals.

9. A communication method of a terminal, the method comprising:
receiving a feedback control message comprising information about a target received power of feedback information of the terminal which is received at a base station, the target received power having a minimum value set for the base station; and
transmitting the feedback information based on the target received power and information associated with a feedback mode of the feedback information included in the feedback control message,
wherein the feedback mode indicates whether a compressed sensing resource block defined in advance for compressed sensing is allocated to the terminal or whether another resource is allocated to the terminal by the base station, and
wherein the feedback mode includes at least one of a third mode in which the base station allocates a compressed sensing resource block defined in advance to a terminal capable of satisfying the target received power, and allocates an orthogonal resource to a terminal incapable of satisfying the target received power, and a fourth mode in which each of the plurality of terminals separately determines a resource to be used based on whether each of the plurality of terminals is capable of satisfying the target received power.

10. The method of claim 9 , wherein the feedback control message includes at least one of information associated with a feedback mode of the feedback information, information about a compressed sensing resource block allocated to the terminal and defined in advance for compressed sensing, information about the target received power of feedback information of the terminal which is received at the base station, and information about a threshold value of a channel quality indicator.

11. The method of claim 10 , wherein the compressed sensing resource block defined in advance is adjusted by the base station based on a number of terminals that are simultaneously accessing the base station.

12. The method of claim 9 , wherein the feedback mode includes at least one of a first mode in which the base station allocates an orthogonal resource to the terminal and a second mode in which the base station allocates, to the terminal, a compressed sensing resource block defined in advance for compressed sensing.

13. The method of claim 12 , further comprising:
determining whether the target received power is satisfied if the feedback mode included in the feedback control message corresponds to the third mode; and
transmitting the feedback information using the allocated compressed sensing resource block if the target received power is satisfied.

14. The method of claim 13 , further comprising:
transmitting the feedback information using the allocated orthogonal resource if the target received power is not satisfied.

15. The method of claim 12 , further comprising:
determining whether the target received power is satisfied; and
transmitting the feedback information using the compressed sensing resource block defined in advance if the target received power is satisfied,
wherein the feedback mode included in the feedback control message corresponds to the fourth mode.

16. The method of claim 15 , further comprising:
transmitting the feedback information using a resource acquired by a random access if the target received power is not satisfied.

17. The method of claim 9 , wherein the information about the target received power of feedback information of the terminal which is received at the base station is adjusted by the base station based on traffic that is fed back by the terminal.

18. A non-transitory computer-readable storage medium having stored therein progr

Assignees

• Noh Won Jong
• Kim Joon Tae
• Choi Hyun Ho
• Shin Won Jae
• Park Dong Jo
• Shin Chang Yong
• Samsung Electronics Co Ltd
• Korea Advanced Inst Sci & Tech

Inventors

• Noh Won Jong
• Kim Joon Tae
• Choi Hyun Ho
• Shin Won Jae
• Park Dong Jo
• Shin Chang Yong

Classifications

• H04W72/542 Primary

  using measured or perceived quality · CPC title

• H04W52/30

  using constraints in the total amount of available transmission power · CPC title

• H04L1/0026 Primary

  Transmission of channel quality indication · CPC title

• H04W28/06

  Optimizing {the usage of the radio link}, e.g. header compression, information sizing {, discarding information (system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365)} · CPC title

• H04W74/0833

  Random access procedures, e.g. with 4-step access · CPC title