Joint WLAN Power and Rate Control to Mitigate Co-Located LTE TDD Interference

• US 20160309358A1
• Filed: 04/18/2016
• Published: 10/20/2016
• Est. Priority Date: 01/28/2014
• Status: Active Grant

• Current Assignee: Malikie Innovations Limited (Key Patent Innovations Limited)
• Original Assignee: Blackberry Limited
• Inventors: Smadi, Mohammed Nawaf, Badawy, Ghada
• Granted Patent: US 9,826,429 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04L 5/14 Two-way operation using the same type of signal, i.e. duplex
• CPC Class Codes: H04L 5/1469 using time-sharing
• CPC Class Codes: H04W 16/14 Spectrum sharing arrangements between different networks
• CPC Class Codes: H04W 28/0231 based on communication conditions dynamic wireless traffic scheduling definition based on channel quality criteria H04W72/54
• CPC Class Codes: H04W 28/0236 radio quality, e.g. interference, losses or delay
• CPC Class Codes: H04W 52/18 TPC being performed according to specific parameters
• CPC Class Codes: H04W 52/243 taking into account interferences
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/541 using the level of interference
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Abstract

In some implementations, a method of a wireless local area network (WLAN) transmitter includes, in response to interference with a long term evolution (LTE) receiver, determining a de-sense value of the LTE receiver; determining a transmission rate for the WLAN transmitter, the transmission rate requiring an equal or lower receiver sensitivity than a received signal strength threshold; determining a frame aggregation size based on the transmission rate and an LTE frame configuration for the LTE receiver; determining a transmission power based on the de-sense value; and transmitting data during a downlink receiving period of the LTE receiver using the transmission rate, the frame aggregation size, and the transmission power.

Claims

1-20. -20. (canceled)

21. A method performed at a wireless local area network (WLAN) transmitter of a communication system in response to interference with a long term evolution (LTE) receiver, the method comprising:

determining a frame size based on a transmission rate for the WLAN transmitter and an LTE frame configuration for the LTE receiver;

determining a throughput based on the transmission rate and the frame size;

determining the throughput is greater than a throughput for a current transmission rate and a current frame size; and

in response to determining the throughput is greater, transmitting data during a downlink receiving period of the LTE receiver using the transmission rate and the frame size.

22. The method of claim 21, wherein the LTE frame configuration comprises an LTE time division duplex (TDD) frame configuration and transmitting data comprises transmitting data during an entire LTE TDD frame of the LTE receiver using the transmission rate and the frame size.

23. The method of claim 21, wherein the LTE frame configuration for the LTE receiver is received over an interface between the WLAN transmitter and the LTE receiver.

24. The method of claim 21, wherein the transmission rate is a first transmission rate and the frame size is a first frame size, the method comprising:

determining a first efficiency based on the first frame size;

determining a first throughput based on the first transmission rate and the first efficiency;

determining a second frame size based on a second transmission rate and the LTE frame configuration for the LTE receiver;

determining a second efficiency based on the second frame size;

determining a second throughput based on the second transmission rate and the second efficiency; and

wherein the WLAN transmitter is configured to transmit data during the downlink receiving period of the LTE receiver using the first transmission rate and the first frame size only if the first throughput is larger than the second throughput.

25. The method of claim 24, wherein determining the second frame size comprise determining a maximum frame size that can be transmitted during an LTE uplink transmission period using the second transmission rate.

26. The method of claim 24, wherein determining the first frame size comprise determining a maximum frame size that can be transmitted during an entire LTE TDD frame time using the first transmission rate.

27. An apparatus of a communication network, comprising:

a long term evolution (LTE) receiver; and

a wireless local area network (WLAN) transmitter, the WLAN transmitter configured to;

determine a frame size based on a transmission rate for the WLAN transmitter and an LTE frame configuration for the LTE receiver;

determine a throughput based on the transmission rate and the frame size;

determine the throughput is greater than a throughput for a current transmission rate and a current frame size; and

in response to determining the throughput is greater, transmit data during a downlink receiving period of the LTE receiver using the transmission rate and the frame size.

28. The apparatus of claim 27, wherein the LTE frame configuration comprises an LTE time division duplex (TDD) frame configuration and the WLAN transmitter is configured to transmit data during an entire LTE TDD frame of the LTE receiver using the transmission rate and the frame size.

29. The apparatus of claim 27, wherein the transmission rate is a first transmission rate and the frame size is a first frame size, and the WLAN transmitter is configured to:

determine a first efficiency based on the first frame size;

determine a first throughput based on the first transmission rate and the first efficiency;

determine a second frame size based on a second transmission rate and the LTE frame configuration for the LTE receiver;

determine a second efficiency based on the second frame size;

determine a second throughput based on the second transmission rate and the second efficiency; and

wherein the WLAN transmitter is configured to transmit data during the downlink receiving period of the LTE receiver using the first transmission rate and the first frame size only if the first throughput is larger than the second throughput.

30. The apparatus of claim 27, wherein the WLAN transmitter is configured to receive the LTE frame configuration over an interface between the WLAN transmitter and the LTE receiver.

31. A non-transitory computer-readable medium storing instructions that are operable when executed by data processing apparatus to perform operations at a first wireless devices in response to interference with a long term evolution (LTE) receiver, the operations comprising:

determining a frame size based on a transmission rate for the WLAN transmitter and an LTE frame configuration for the LTE receiver;

determining a throughput based on the transmission rate and the frame size;

determining the throughput is greater than a throughput for a current transmission rate and a current frame size; and

in response to determining the throughput is greater, transmitting data during a downlink receiving period of the LTE receiver using the transmission rate and the frame size.

32. The computer-readable medium of claim 31, wherein the LTE frame configuration comprises an LTE time division duplex (TDD) frame configuration and transmitting data comprises transmitting data during an entire LTE TDD frame of the LTE receiver using the transmission rate and the frame size.

33. The computer-readable medium of claim 31, wherein the transmission rate is a first transmission rate and the frame size is a first frame size, the operations comprising:

determining a first efficiency based on the first frame size;

determining a first throughput based on the first transmission rate and the first efficiency;

determining a second frame size based on a second transmission rate and the LTE frame configuration for the LTE receiver;

determining a second efficiency based on the second frame size;

determining a second throughput based on the second transmission rate and the second efficiency; and

wherein the WLAN transmitter is configured to transmit data during the downlink receiving period of the LTE receiver using the first transmission rate and the first frame size only if the first throughput is larger than the second throughput.

34. The computer-readable medium of claim 33, wherein determining the first frame size comprise determining a maximum frame size that can be transmitted during an entire LTE TDD frame time using the first transmission rate.