METHOD AND WI-FI DEVICE FOR SETTING COMMUNICATIONS MODE

• US 20130343251A1
• Filed: 12/26/2012
• Published: 12/26/2013
• Est. Priority Date: 06/25/2012
• Status: Active Grant

• Current Assignee: Huawei Device Company Limited (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Device Company Limited (Huawei Investment & Holding Co., Ltd.)
• Inventors: Zhang, Wei
• Granted Patent: US 9,125,156 B2
• Time in Patent Office: Days
• US Class Current: 370/311
• CPC Class Codes: H04B 7/0689 using different transmission schemes, at least one of them being a diversity transmission scheme
• CPC Class Codes: H04B 7/0871 using different reception schemes, at least one of them being a diversity reception scheme
• CPC Class Codes: H04W 52/0212 managed by the network, e.g. network or access point is master and terminal is slave
• CPC Class Codes: H04W 52/028 switching on or off only a part of the equipment circuit blocks
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

An embodiment of the present invention discloses a Wi-Fi device, including a radio frequency circuit, a signal processor, an application processor, and a Wi-Fi chip. The application processor is configured to preset the work mode of the Wi-Fi chip to a single input single output SISO mode, and is further configured to acquire a value of a parameter of an uplink wireless network, and when the value of the parameter of the uplink wireless network is determined to be greater than or equal to a preset value, set the work mode of the Wi-Fi chip to a multiple-input multiple-output MIMO mode. An embodiment of the present invention further discloses a method for setting a communications mode.

Claims

1. A Wi-Fi device, comprising a radio frequency circuit, a signal processor, an application processor, and a Wi-Fi chip, wherein:

the radio frequency circuit is configured to receive and send analog signals;

the signal processor is configured to perform conversion on digital signals and the analog signals;

the application processor is configured to;

(a) preset a work mode of the Wi-Fi chip to a single input single output SISO) mode,

(b) acquire a value of a parameter of an uplink wireless network, and

(c) when the value of the parameter of the uplink wireless network is determined to be greater than or equal to a preset value, set the work mode of the Wi-Fi chip to a multiple-input multiple-output (MIMO) mode; and

the Wi-Fi chip supports Wi-Fi communications in the SISO mode and the MIMO mode.

2. The Wi-Fi device according to claim 1, wherein the parameter of the uplink wireless network is a current rate of the uplink wireless network or a current bandwidth of the uplink wireless network;

and

the application processor is configured to acquire the current rate of the uplink wireless network; and

when the current rate of the uplink wireless network is determined to be greater than or equal to the preset value, set the work mode of the Wi-Fi chip to the MIMO mode.

3. The Wi-Fi device according to claim 1, wherein the value of the parameter of the uplink wireless network is a current rate of the uplink wireless network and a current bandwidth of the uplink wireless network, the application processor is configured to:

acquire the current rate of the uplink wireless network;

when the current rate of the uplink wireless network is determined to be greater than or equal to a first value, the application processor acquires the current bandwidth of the uplink wireless network;

wherein if the application processor determines that the current bandwidth of the uplink wireless network is greater than or equal to a second value, the application processor sets the work mode of the Wi-Fi chip to the MIMO mode; and

if the application processor determines that the current bandwidth of the uplink wireless network is less than the second value, the application processor keeps the work mode of the Wi-Fi chip in the SISO mode.

4. The Wi-Fi device according to claim 1, wherein the value of the parameter of the uplink wireless network is a current rate of the uplink wireless network and a current bandwidth of the uplink wireless network;

the application processor is specifically configured to;

acquire the current bandwidth of the uplink wireless network; and

when the current bandwidth of the uplink wireless network is determined to be greater than or equal to a third value, the application processor acquires the current rate of the uplink wireless network;

wherein if the application processor determines that the current rate of the uplink wireless network is greater than or equal to a fourth value, the application processor sets the work mode of the Wi-Fi chip to the MIMO mode; and

if the application processor determines that the current rate of the uplink wireless network is less than the fourth value, the application processor keeps the work mode of the Wi-Fi chip in the SISO mode.

5. The Wi-Fi device according to claim 1, wherein after the application processor sets the Wi-Fi mode of the Wi-Fi device to the MIMO mode, the application processor is further configured to acquire the current rate of the uplink wireless network;

and if the application processor determines that the current rate of the uplink wireless network is less than a fifth value, the application processor sets the work mode of the Wi-Fi chip to the SISO mode.

6. The Wi-Fi device according to claim 1, wherein the application processor setting the work mode of the Wi-Fi chip to the SISO mode comprises:

determining a network standard of an accessed network;

determining whether a network rate of the accessed network is capable of reaching a sixth value according to the network standard;

wherein if the network rate is capable of reaching the sixth value, the application processor presets the work mode of the Wi-Fi chip to the SISO mode; and

if the network rate is not capable of reaching the sixth value the application processor sets, the work mode of the Wi-Fi chip to the SISO mode and terminates the process of setting the work mode of the Wi-Fi chip to the SISO mode.

7. The Wi-Fi device according to claim 1, wherein that the application processor setting the work mode of the Wi-Fi chip to the SISO mode comprises that:

determining the highest network rate which is defined in an internet access package of the Wi-Fi device;

wherein if the application processor determines that the highest network rate is greater than or equal to a seventh value, the application processor presets the work mode of the Wi-Fi chip to the SISO mode; and

if the application processor determines that the highest network rate is less than the seventh value, the application processor sets the work mode of the Wi-Fi chip to the SISO mode and terminates the process of setting the work mode of the Wi-Fi chip to the SISO mode.

15. The Wi-Fi device according to claim 1, wherein the parameter of the uplink wireless network is a current rate of the uplink wireless network or a current bandwidth of the uplink wireless network;

and

the application processor is configured to acquire the current bandwidth of the uplink wireless network; and

when the current bandwidth of the uplink wireless network is determined to be greater than or equal to the preset value, set the work mode of the Wi-Fi chip to the MIMO mode.

8. A method for setting a communications mode, applied to a Wi-Fi device that supports Wi-Fi communications in a single input single output (SISO) mode and a multiple-input multiple-output (MIMO) mode, the method comprising:

presetting, by the Wi-Fi device, a Wi-Fi mode of the Wi-Fi device to the SISO mode;

acquiring, by the Wi-Fi device, a value of a parameter of an uplink wireless network; and

setting, by the Wi-Fi device, the Wi-Fi mode of the Wi-Fi device to the MIMO mode if the value of the parameter of the uplink wireless network is greater than or equal to a preset value.

9. The method according to claim 8, wherein the parameter of the uplink wireless network is a current rate of the uplink wireless network or a current bandwidth of the uplink wireless network.

10. The method according to claim 8, wherein the value of the parameter of the uplink wireless network is a current rate of the uplink wireless network and a current bandwidth of the uplink wireless network;

and the acquiring the value of the parameter of the uplink wireless network and setting the Wi-Fi mode of the Wi-Fi device to the MIMO mode if the value of the parameter of the uplink wireless network is greater than or equal to the preset value comprise;

acquiring the current rate of the uplink wireless network;

acquiring the current bandwidth of the uplink wireless network, if the current rate of the uplink wireless network is greater than or equal to a first value;

setting the Wi-Fi mode of the Wi-Fi device to the MIMO mode, if the current bandwidth of the uplink wireless network is greater than or equal to a second value;

keeping the Wi-Fi mode in the SISO mode, if the current bandwidth of the uplink wireless network is less than the second value.

11. The method according to claim 8, wherein the value of the parameter of the uplink wireless network is a current rate of the uplink wireless network and a current bandwidth of the uplink wireless network;

and the acquiring the value of the parameter of the uplink wireless network and setting the Wi-Fi mode of the Wi-Fi device to the MIMO mode if the value of the parameter of the uplink wireless network is greater than or equal to the preset value comprise;

acquiring the current bandwidth of the uplink wireless network;

acquiring the current rate of the uplink wireless network, if the current bandwidth of the uplink wireless network is greater than or equal to a third value;

setting the Wi-Fi mode of the Wi-Fi device to the MIMO mode, if the current rate of the uplink wireless network is greater than or equal to a fourth value; and

keeping the Wi-Fi mode in the SISO mode, if the current rate of the uplink wireless network is less than the fourth value.

12. The method according to claim 8, after setting the Wi-Fi mode of the Wi-Fi chip to the MIMO mode, further comprising:

acquiring a current rate of the uplink wireless network; and

setting the Wi-Fi mode of the Wi-Fi device to the SISO mode, if the current rate of the uplink wireless network is less than a fifth value.

13. The method according to claim 8, wherein the presetting the Wi-Fi mode of the Wi-Fi chip to the SISO mode comprises:

determining by the Wi-Fi device a network standard of an accessed network, determining whether the rate of the accessed network is capable of reaching a sixth value according to the network standard; and

wherein if the network rate is capable of reaching the sixth value, the Wi-Fi mode of the Wi-Fi device is preset to the SISO mode;

if the network rate is not capable of reaching the sixth value, the Wi-Fi mode is set to the SISO mode and the process of presetting the Wi-Fi mode of the Wi-Fi chip to the SISO mode is terminated.

14. The method according to claim 8, wherein the presetting the Wi-Fi mode of the Wi-Fi chip to the SISO mode comprises that:

determining, by the Wi-Fi device, a highest network rate which is defined in the internet access package of the Wi-Fi device, and

wherein if the highest network rate is greater than or equal to a seventh value, the Wi-Fi mode of the Wi-Fi device is preset to the SISO mode;

if the highest network rate is less than the seventh value, the Wi-Fi mode is set to the SISO mode and the process of presetting the Wi-Fi mode of the Wi-Fi chip to the SISO mode is terminated.