ELECTRONIC DEVICE AND WIRELESS COMMUNICATION METHOD IN ELECTRONIC DEVICE

• US 20170331529A1
• Filed: 04/12/2017
• Published: 11/16/2017
• Est. Priority Date: 05/13/2016
• Status: Abandoned Application

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: LEE, Jung-Hun, Min, Hyun-Kee, Lee, Young-Kow, Jung, Bu-Seop
• Application Number:
  US15/485,968
• Publication Number:
  US 20170331529A1
• Time in Patent Office: Days
• CPC Class Codes: H04B 7/0413 MIMO systems
• CPC Class Codes: H04B 7/0452 Multi-user MIMO systems
• CPC Class Codes: H04B 7/0689 using different transmission schemes, at least one of them being a diversity transmission scheme
• CPC Class Codes: H04W 88/10 adapted for operation in multiple networks, e.g. multi-mode access points

Abstract

Provided are an electronic device and a wireless communication method of an electronic device. The electronic device obtains information for mode switching when the electronic device is connected to an access point based on one of a first mode from among a multiple user multiple input multiple output (MU-MIMO) mode and a single user multiple input multiple output (SU-MIMO) mode; determining whether to switch the mode to a second mode, which is different from the first mode, from among the MU-MIMO mode and the SU-MIMO mode, based on the obtained information for mode switching; and performing wireless data communication with the access point based on the second mode when the electronic device is switched to the second mode.

Claims

1. An electronic device, comprising:

a communication module that performs wireless data communication with an access point; and

a processor configured to perform;

obtaining information for mode switching when the electronic device is connected to the access point based on one of a first mode from among a multiple user multiple input multiple output (MU-MIMO) mode and a single user multiple input multiple output (SU-MIMO) mode;

determining whether to switch the mode to a second mode, which is different from the first mode, from among the MU-MIMO mode and the SU-MIMO based on the obtained information for mode switching; and

performing wireless data communication with the access point based on the second mode when the electronic device is switched to the second mode.

2. The electronic device of claim 1, wherein, when the first mode is the MU-MIMO mode and the second mode is the SU-MIMO mode, the processor determines the number of electronic devices connected to the access point based on the information for mode switching obtained when the electronic device is connected to the access point in the MU-MIMO mode;

and

when the number of electronic devices connected to the access point is 1, switches the MU-MIMO mode to the SU-MIMO mode.

3. The electronic device of claim 1, wherein, when the first mode is the MU-MIMO mode and the second mode is the SU-MIMO mode, the processor obtains a maximum data transmission rate determined in the MU-MIMO mode as the information for mode switching;

and

switches the MU-MIMO mode to the SU-MIMO mode when the obtained maximum data transmission rate is less than a maximum data transmission rate set for the SU-MIMO mode.

4. The electronic device of claim 3, wherein the processor determines the number of antennas that the access point allocates to the electronic device based on the obtained maximum data transmission rate;

and

activates at least one of the antennas based on the number of antennas of the access point allocated to the electronic device.

5. The electronic device of claim 1, wherein, when the first mode is the SU-MIMO mode and the second mode is the MU-MIMO mode, the processor obtains as the information for mode switching, a current data transmission rate determined through execution of wireless data communication with the access point in the SU-MIMO mode;

and

switches the SU-MIMO mode to the MU-MIMO mode when the determined current data transmission rate is less than a maximum data transmission rate set for the MU-MIMO mode.

6. The electronic device of claim 1, wherein, when the first mode is the SU-MIMO mode and the second mode is the MU-MIMO mode, the processor determines the number of electronic devices connected to the access point based on the obtained information for mode switching;

and

switches the SU-MIMO mode to the MU-MIMO mode when the number of electronic devices connected to the access point is greater than or equal to 2.

7. The electronic device of claim 1, wherein the processor transmits a connection related message including information indicating that the electronic device is switched to the second mode when the mode is switched to the second mode;

and

performs a control to perform wireless data communication with the access point based on the second mode when the electronic device is connected to the access point based on the second mode.

8. The electronic device of claim 1, wherein obtained information includes at least one of the number of electronic devices connected to the access point, a maximum data transmission rate allocated to the electronic device, and current data throughput information determined in the electronic device.

9. The electronic device of claim 7, wherein the processor, when the mode is switched to the SU-MIMO mode as the second mode, generates, as the connection related message, a re-connection request message or an action frame request message including a related field indicating whether the MU-MIMO mode is supported, in which information indicating that the MU-MIMO mode is not supported is set;

and

transmits the generated re-connection request message or action frame request message when the electronic device is connected to the access point.

10. The electronic device of claim 7, wherein the processor executes a control to disconnect a wireless communication connection with the access point when the electronic device is switched to the SU-MIMO mode;

generates, as the connection related message, a connection request message including a related field indicating whether the MU-MIMO mode is supported, which is set as information indicating that the MU-MIMO mode is not supported; and

transmits the generated connection request message to the access point.

11. A wireless communication method of an electronic device that performs wireless data communication with an access point, the method comprising:

obtaining information for mode switching when the electronic device is connected to the access point based on one of a first mode from among a multiple user multiple input multiple output (MU-MIMO) mode and a single user multiple input multiple output (SU-MIMO) mode;

determining whether to switch the mode to a second mode, which is different from the first mode, from among the MU-MIMO mode and the SU-MIMO mode based on the obtained information for mode switching; and

performing wireless data communication with the access point based on the second mode when the electronic device is switched to the second mode.

12. The method of claim 11, wherein determining whether to switch the mode to the second mode, which is different from the first mode, comprises:

determining the number of electronic devices connected to the access point based on the information for mode switching obtained when the electronic device is connected to the access point based on the MU-MIMO mode when the first mode is the MU-MIMO mode and the second mode is SU-MIMO mode; and

switching the MU-MIMO mode to the SU-MIMO mode when the number of electronic devices connected to the access point is 1.

13. The method of claim 11, wherein determining whether to switch the mode to the second mode, which is different from the first mode, comprises:

obtaining, as the information for mode switching, a maximum data transmission rate determined in the MU-MIMO mode when the first mode is the MU-MIMO mode and the second mode is the SU-MIMO mode;

comparing the obtained maximum data transmission rate and a maximum data transmission rate set for the MU-MIMO mode; and

switching the MU-MIMO mode to the SU-MIMO mode when the obtained maximum data transmission rate is less than the maximum transmission data rate set for the MU-MIMO mode.

14. The method of claim 13, wherein determining whether to switch the mode to the second mode, which is different from the first mode, comprises:

determining the number of antennas that the access point allocates to the electronic device based on the obtained maximum data transmission rate; and

activating at least one of the antennas based on the number of antennas of the access point allocated to the electronic device.

15. The method of claim 11, wherein determining whether to switch the mode to the second mode, which is different from the first mode, comprises:

obtaining, as the information for mode switching, a current data transmission rate determined during wireless data communication with the access point performed based on the SU-MIMO mode when the first mode is the SU-MIMO mode and the second mode is the MU-MIMO mode;

comparing the obtained current data transmission rate and a maximum data transmission rate set for the SU-MIMO mode; and

determining to switch the SU-MIMO mode to the MU-MIMO mode when the obtained current data transmission rate is less than the maximum data transmission rate set for the SU-MIMO mode.

16. The method of claim 11, wherein determining whether to switch the mode to the second mode, which is different from the first mode, comprises:

determining the number of electronic devices connected to the access point based on the obtained information for mode switching when the first mode is the SU-MIMO mode and the second mode is the MU-MIMO mode; and

switching the SU-MIMO mode to the MU-MIMO mode when the number of electronic devices connected to the access point is greater than or equal to 2.

17. The method of claim 11, further comprising:

transmitting a connection related message including information indicating that the electronic device is switched to the second mode when the electronic device is switched to the second mode; and

performing wireless data communication with the access point based on the second mode when the electronic device is connected to the access point based on the second mode.

18. The method of claim 17, wherein transmitting the connection related message, comprises:

generating, as the connection related message, a re-connection request message or an action frame request message including a related field indicating whether the MU-MIMO mode is supported, which is set as information indicating that the MU-MIMO mode is not supported, when the electronic device is switched to the SU-MIMO mode as the second mode; and

transmitting the generated re-connection request message or the action frame request message when the electronic device is connected to the access point.

19. The method of claim 17, wherein transmitting the connection related message, comprises:

disconnecting a wireless communication connection with the access point when the electronic device is switched to the SU-MIMO mode as the second mode;

generating, as the connection related message, a connection request message including a related field indicating whether the MU-MIMO mode is supported, which is set as information indicating that the MU-MIMO mode is not supported; and

transmitting the generated connection request message to the access point.

20. A non-transitory computer readable recording medium that stores a program to be implemented on a computer, wherein the program includes executable instructions to enable a processor to perform operations when the program is executed by the processor, the operations comprising:

obtaining information for mode switching when an electronic device is connected to an access point based on one of a first mode from among a multiple user multiple input multiple output (MU-MIMO) mode and a single user multiple input multiple output (SU-MIMO) mode;

determining whether to switch the mode to a second mode, which is different from the first mode, from among the MU-MIMO mode and the SU-MIMO mode based on the obtained information for mode switching; and

performing wireless data communication with the access point based on the second mode when the electronic device is switched to the second mode.