Wireless communication device

• US 9,185,747 B2
• Filed: 07/08/2014
• Issued: 11/10/2015
• Est. Priority Date: 02/03/2011
• Status: Expired due to Fees

• Current Assignee: Renesas Electronics Corporation
• Original Assignee: Renesas Electronics Corporation
• Inventors: Sugimoto, Hiroki, Kubota, Koji
• Primary Examiner(s): Mills, Donald
• Application Number:
  US14/325,781
• Publication Number:
  US 20140315540A1
• Time in Patent Office: 490 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: H04B 1/0064 with separate antennas for the more than one band H04B1/0053 takes precedence
• CPC Class Codes: H04W 28/04 Error control
• CPC Class Codes: H04W 4/80 Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
• CPC Class Codes: H04W 52/0238 where the received signal is an unwanted signal, e.g. interference or idle signal
• CPC Class Codes: H04W 56/00 Synchronisation arrangements
• CPC Class Codes: H04W 56/001 Synchronization between nodes
• CPC Class Codes: H04W 72/02 Selection of wireless resources by user or terminal
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/1215 for collaboration of different radio technologies
• 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
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

In a wireless communication device for performing plural wireless communications with different standards using the same frequency band, degradation of communication quality and communication speed due to communication interference is prevented, while drop in throughput and occurrence of frame loss are prevented. A first wireless communication section first performs wireless communication using a first frequency band and a second wireless communication section performs second wireless communication using a second frequency band with which at least a part of the first frequency band overlaps. The first wireless communication section analyzes a communication status signal which represents a signal pattern corresponding to communication status of the second wireless communication and then determines whether it is synchronous communication, and if it is, the first wireless communication section transmits/receives data in a non-communication period when communication in the synchronous communication is not performed, in synchronization with timing of the synchronous communication.

Claims

1. A method of wireless communication, comprising the steps of:

a) generating a communication status signal in a predetermined period of time which is set to a first value while a first wireless communication is operating and set to a second value while the first wireless communication is not operating in the predetermined period of time;

b) analyzing the communication status signal;

c) enabling a second wireless communication that is different from the first wireless communication when the communication status signal is not set to the first value in the predetermined period of time;

d) suspending the second wireless communication when a total time of the communication status signal set to the first value reaches or exceeds a predetermined value in the predetermined period of time;

e) when the communication status signal does not reach the predetermined value in the predetermined period of time and the communication status signal is cyclic, enabling a second wireless communication while the level of the communication status signal is the second value.

2. The method of wireless communication according to claim 1, further comprising the step of:

f) when the communication status signal does not reach the predetermined value in the predetermined period of time and the communication status signal is not cyclic, enabling the second wireless communication based on a signal intensity of at least one of the second wireless communication and the first wireless communication.

3. The method of wireless communication according to claim 1, further comprising the step of:

f) when the communication status signal does not reach the predetermined value in the predetermined period of time and the communication status signal is not cyclic, enabling the first wireless communication or the second wireless communication depending on a value of a priority signal.

4. The method of wireless communication according to claim 1, wherein the first wireless communication is in a 2.4 GHz band.

5. The method of wireless communication according to claim 1, wherein the second wireless communication is in a 2.4 GHz band.

6. A method of wireless communication, comprising the steps of:

a) generating a communication status signal in a predetermined period of time which is set to a first value while first wireless communication is operating and set to a second value while the first wireless communication is not operating in the predetermined period of time;

b) analyzing the communication status signal;

c) enabling a wireless LAN communication that is different from the first wireless communication when the communication status signal is not set to the first value in the predetermined period of time;

d) suspending the wireless LAN communication when a total time of the communication status signal set to the first value reaches or exceeds a predetermined value in the predetermined period of time;

e) when the communication status signal does not reach the predetermined value in the predetermined period of time and the communication status signal is cyclic, enabling a wireless LAN communication while the level of the communication status signal is the second value,

wherein the first wireless communication complies with an IEEE 802.15 standard.

7. The method of wireless communication according to claim 6, further comprising the step of:

f) when the communication status signal does not reach the predetermined value in the predetermined period of time and the communication status signal is not cyclic, enabling the wireless LAN communication based on a signal intensity of at least one of the wireless LAN communication and the first wireless communication.

8. The method of wireless communication according to claim 6, further comprising the step of:

f) when the communication status signal does not reach the predetermined value in the predetermined period of time and the communication status signal is not cyclic, enabling the first wireless communication or the wireless LAN communication depending on a value of a priority signal.

9. The method of wireless communication according to claim 6, wherein the first wireless communication is in a 2.4 GHz band.

10. The method of wireless communication according to claim 6, wherein the wireless LAN communication is in a 2.4 GHz band.