Apparatus and method for operating full-duplex scheme in communication system supporting beam-forming scheme
The present invention relates to a 5 th -generation (5G) or pre-5G communication system provided for supporting higher data transmission rates than 4th-generation (4G) communication system such as long term evolution (LTE). The present invention relates to a method in which an access point (AP) operates a full-duplex scheme in a communication system supporting a beam-forming scheme, the method comprising the steps of: generating a magnetic interference intensity table according to transmitted beam patterns and received beam patterns; determining, by the AP, a transmitted beam pattern and a received beam pattern for all stations (STAs) on the basis of channel measurement feedback information received from the stations, which provide service, and the electromagnetic-interference intensity table; and performing a communication operation with each of the stations on the basis of the determined transmitted beam pattern and received beam pattern.
1. A method of an access point (AP) in a communication system, the method comprising:
receiving channel measurement feedback information from a station (STA) to which the AP provides a service;
identifying a beam pattern comprising a combination of an optimal transmission (Tx) beam pattern and an optimal reception (Rx) beam pattern for the STA based on the channel measurement feedback information and information related to self-interference of the AP; and
communicating with the STA based on the identified beam pattern,
wherein the information related to self-interference comprises a mapping table including self-interference strengths corresponding to a plurality of beam patterns of the AP, each of the plurality of beam patterns comprising a Tx beam pattern of the AP and a Rx beam pattern of the AP, and
wherein each of the self-interference strengths is measured on an interference signal between a Tx beam pattern of the AP and a Rx beam pattern of the AP.
2. The method of claim 1 , wherein at least one of the self-interference strengths for Tx beam patterns for each of the Rx beam patterns is measured by sweeping the Tx beam patterns for each of the Rx beam patterns.
3. The method of claim 1 , wherein at least one of the self-interference strengths for Rx beam patterns for each of Tx beam patterns is measured by sweeping the Rx beam patterns for each of the Tx beam patterns.
4. The method of claim 1 , wherein the channel measurement feedback information includes a beam pattern identifier (ID) which the STA prefers and channel quality information.
5. The method of claim 1 , further comprising:
updating the information related to self-interference.
6. A method of a station (STA) in a communication system, the method comprising:
receiving channel measurement feedback information from an access point (AP);
identifying a beam pattern comprising a combination of an optimal transmission (Tx) beam pattern and an optimal reception (Rx) beam pattern for the AP based on the channel measurement feedback information and information related to self-interference of the STA; and
communicating with the AP based on the identified beam pattern,
wherein the information related to self-interference comprises a mapping table including self-interference strengths corresponding to a plurality of beam patterns of the STA, each of the plurality of beam patterns comprising a Tx beam pattern of the STA and a Rx beam pattern of the STA, and
wherein each of self-interference strengths is measured on an interference signal between a Tx beam pattern of the STA and a Rx beam pattern of the STA.
7. The method of claim 6 , wherein at least one of the self-interference strengths for Tx beam patterns for each of Rx beam patterns is measured by sweeping the Tx beam patterns for each of the Rx beam patterns.
8. The method of claim 6 , wherein at least one of the self-interference strengths for Rx beam patterns for each of Tx beam patterns is measured by sweeping the Rx beam patterns for each of the Tx beam patterns.
9. The method of claim 6 , wherein the channel measurement feedback information includes a beam pattern identifier (ID) which the AP prefers and channel quality information.
10. The method of claim 6 , further comprising:
updating the information related to self-interference.
11. An access point (AP) in a communication system, the AP comprising:
a transceiver configured to transmit or receive a signal; and
at least one processor coupled with the transceiver and configured to:
receive channel measurement feedback information from a station (STA) to which the AP provides a service,
identify a beam pattern comprising a combination of an optimal transmission (Tx) beam pattern and an optimal reception (Rx) beam pattern for the STA based on the channel measurement feedback information and information related to self-interference of the AP, and
communicate with the STA based on the identified beam pattern,
wherein the information related to self-interference comprises a mapping table including self-interference strengths corresponding to a plurality of beam patterns of the AP, each of the plurality of beam patterns comprising a Tx beam pattern of the AP and a Rx beam pattern of the AP, and
wherein each of self-interference strengths being measured on an interference signal between a Tx beam pattern of the AP and a Rx beam pattern of the AP.
12. The AP of claim 11 , wherein at least one of the self-interference strengths for Tx beam patterns for each of Rx beam patterns is measured by sweeping the Tx beam patterns for each of the Rx beam patterns.
13. The AP of claim 11 , wherein at least one self-interference strengths for Rx beam patterns for each of Tx beam patterns is measured by sweeping the Rx beam patterns for each of the Tx beam patterns.
14. The AP of claim 11 , wherein the channel measurement feedback information includes a beam pattern identifier (ID) which the STA prefers and channel quality information.
15. The AP of claim 11 , wherein the at least one processor is further configured to update the information related to self-interference.
16. A station (STA) in a communication system, the STA comprising:
a transceiver configured to transmit or receive a signal; and
at least one processor configured to:
receive channel measurement feedback information from an access point (AP),
identify a beam pattern comprising a combination of an optimal transmission (Tx) beam pattern and an optimal reception (Rx) beam pattern for the AP based on the channel measurement feedback information and information related to self-interference of the STA, and
communicate with the AP based on the identified beam pattern,
wherein the information related to self-interference comprises a mapping table including self-interference strengths corresponding to a plurality of beam patterns of the AP, each of the plurality of beam patterns comprising a Tx beam pattern of the STA and a Rx beam pattern of the STA, and
wherein each of self-interference strengths being measured on an interference signal between a Tx beam pattern of the STA and a Rx beam pattern of the STA.
17. The STA of claim 16 , wherein at least one of the self-interference strengths for Tx beam patterns for each of Rx beam patterns is measured by sweeping the Tx beam patterns for each of the Rx beam patterns.
18. The STA of claim 16 , wherein at least one of the self-interference strengths for Rx beam patterns for each of Tx beam patterns is measured by sweeping the Rx beam patterns for each of the Tx beam patterns.
19. The STA of claim 16 , wherein the channel measurement feedback information includes a beam pattern identifier (ID) which the AP prefers and channel quality information.
20. The STA of claim 16 , wherein the at least one processor is further configured to update the information related to self-interference.