Wireless communication method and apparatus

1. A wireless communication method, comprising:

determining an overlapping wireless frequency band resource between a cellular communication system and a wireless-fidelity (WIFI) system;

transmitting, by the cellular communication system, an interference signal on the overlapping wireless frequency band resource to shield a terminal of the WIFI system from performing communications on the overlapping wireless frequency band resource; and

communicating, by the cellular communication system, with a terminal on the overlapping wireless frequency band resource;

wherein a frequency domain bandwidth of the interference signal is determined according to a number of the interference signal and transmit power of the interference signal.

2. The method of claim 1 , wherein determining the overlapping wireless frequency band resource between the cellular communication system and the WIFI system comprises:

determining, according to a size and a position of an occupied frequency-domain bandwidth of the cellular communication system, an overlapping sub-channel set between the cellular communication system and the WIFI system.

3. The method of claim 2 , wherein before transmitting, by the cellular communication system, the interference signal on the overlapping wireless frequency band resource, the method further comprises:

determining a position for transmitting the interference signal from the sub-channel set of the cellular communication system and a number of the interference signal, wherein the position for transmitting the interference signal and the number of the interference signal satisfy a condition that the interference signal interferes with each sub-channel in the sub-channel set of the WIFI system.

4. The method of claim 3 , wherein the position for transmitting the interference signal is located on a guard band of the cellular communication system or on a transmission bandwidth of the cellular communication system.

5. The method of claim 4 , wherein transmit power of the interference signal satisfies a condition that an average received power value of each sub-channel in the sub-channel set received by all WIFI terminals in an interference area is not less than a preset threshold.

6. The method of claim 4 , wherein when the position for transmitting the interference signal is located on the transmission bandwidth of the cellular communication system,

a frequency domain position corresponding to the position for transmitting the interference signal within a bandwidth of the cellular communication system is configured as a non-use region.

7. The method of claim 1 , wherein transmit power of the interference signal, a bandwidth of the interference signal and a number of the interference signal satisfy the following formula:

∑

i

=

1

N

⁢

P

i

*

W

i

-

PL

MAX

-

10

*

log

10

⁡

(

B

)

≥

X

;

wherein N denotes the number of the interference signal, P i denotes transmit power on a unit frequency domain bandwidth of an i-th interference signal, W i denotes a frequency domain bandwidth of the i-th interference signal, PL MAX denotes a maximum path loss of an interfered sub-channel within a coverage range of the WIFI system, B denotes a frequency domain bandwidth of a sub-channel of the WIFI system, and X denotes a preset threshold for average received power of the interfered sub-channel.

8. The method of claim 1 , wherein when the cellular communication system is a frequency division duplex (FDD) system, the interference signal is transmitted in an entire time domain of the FDD system; when the cellular communication system is a time division duplex (TDD) system, the interference signal is only transmitted within a receiving slot of a transmitting end and a receiving slot of a receiving end of the TDD system.

9. The method of claim 1 , wherein the terminal of the WIFI system adaptively performs the communications on a wireless frequency band resource other than the overlapping wireless frequency band resource.

10. A storage medium, comprising a stored program, wherein the program, when executed, performs the method of claim 1 .

11. A communication device, disposed in a cellular communication system, comprising: a memory and a processor,

wherein the processor is connected to the memory and configured to execute a program stored on the memory, wherein the program, when executed, performs a wireless communication method, wherein the wireless communication method comprises:

determining an overlapping wireless frequency band resource between the cellular communication system and a wireless-fidelity (WIFI) system;

transmitting an interference signal on the overlapping wireless frequency band resource to shield a terminal of the WIFI system from performing communications on the overlapping wireless frequency band resource; and

communicating with a terminal on the overlapping wireless frequency band resource;

wherein a frequency domain bandwidth of the interference signal is determined according to a number of the interference signal and transmit power of the interference signal.

12. The communication device according to claim 11 , wherein determining the overlapping wireless frequency band resource between the cellular communication system and the WIFI system comprises:

determining, according to a size and a position of an occupied frequency-domain bandwidth of the cellular communication system, an overlapping sub-channel set between the cellular communication system and the WIFI system.

13. The communication device according to claim 12 , wherein before transmitting the interference signal on the overlapping wireless frequency band resource, the wireless communication method further comprises:

determining a position for transmitting the interference signal from the sub-channel set of the cellular communication system and a number of the interference signal, wherein the position for transmitting the interference signal and the number of the interference signal satisfy a condition that the interference signal interferes with each sub-channel in the sub-channel set of the WIFI system.

14. The communication device according to claim 13 , wherein the position for transmitting the interference signal is located on a guard band of the cellular communication system or on a transmission bandwidth of the cellular communication system.

15. The communication device according to claim 14 , wherein transmit power of the interference signal satisfies a condition that an average received power value of each sub-channel in the sub-channel set received by all WIFI terminals in an interference area is not less than a preset threshold.

16. The communication device according to claim 14 , wherein when the position for transmitting the interference signal is located on the transmission bandwidth of the cellular communication system,

a frequency domain position corresponding to the position for transmitting the interference signal within a bandwidth of the cellular communication system is configured as a non-use region.

17. The communication device according to claim 11 , wherein transmit power of the interference signal, a bandwidth of the interference signal and a number of the interference signal satisfy the following formula:

∑

i

=

1

N

⁢

P

i

*

W

i

-

PL

MAX

-

10

*

log

10

⁡

(

B

)

≥

X

;

wherein N denotes the number of the interference signal, P i denotes transmit power on a unit frequency domain bandwidth of an i-th interference signal, W i denotes a frequency domain bandwidth of the i-th interference signal, PL MAX denotes a maximum path loss of an interfered sub-channel within a coverage range of the WIFI system, B denotes a frequency domain bandwidth of a sub-channel of the WIFI system, and X denotes a preset threshold for average received power of the interfered sub-channel.

18. The communication device according to claim 11 , wherein when the cellular communication system is a frequency division duplex (FDD) system, the interference signal is transmitted in an entire time domain of the FDD system; when the cellular communication system is a time division duplex (TDD) system, the interference signal is only transmitted within a receiving slot of a transmitting end and a receiving slot of a receiving end of the TDD system.