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Radio communication method and radio communication device

A wireless communication device and wireless communication technology, applied in the direction of wireless communication, sustainable communication technology, advanced technology, etc., can solve the problems of inability to receive, increase the possibility of sending data, and inability to correctly receive sending requests, etc.

Inactive Publication Date: 2009-05-20
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the above-mentioned conventional method, there is a problem that since a reception window for receiving transmission requests is designated, transmission requests from a plurality of wireless communication devices are concentrated in the reception window, and the possibility that transmission requests cannot be correctly received increases.
[0005] In addition, there is also the following problem: because the communication request or communication response sent to the device other than itself deviates from its own receiving window, it is impossible to receive them.
Therefore, it is impossible to know the time period of the extended receiving window in which other wireless communication devices receive data, so the possibility of transmitting data in this time period increases.

Method used

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  • Radio communication method and radio communication device
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  • Radio communication method and radio communication device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0064] figure 1 The configuration of the wireless communication network according to the embodiment of the present invention is shown.

[0065] exist figure 1 Among them, the wireless communication devices 101 to 104 respectively perform multi-access ultra-wideband (UWB) wireless communication with other wireless communication devices in the communicable areas 111 to 114, and transmit data to the entire communicable area through omnidirectional antennas. In addition, the wireless communication devices 101 to 104 can move freely in space.

[0066] FIG. 2 is a block diagram showing the configuration of wireless communication devices 101 to 104.

[0067] In FIG. 2 , a receiving unit 201 converts an analog signal received by an antenna 200 into a digital signal, generates a frame, and is always in a receivable state. Furthermore, the transmitting unit 211 converts the digital signal frame into an analog signal, and transmits it from the antenna 200 . The antenna 200 is an omni...

no. 2 approach

[0139] FIG. 14 shows the configuration of a wireless communication device according to this embodiment. The difference from the configuration of the wireless communication device described in Embodiment 1 is that, in addition to the receiving unit 201 and the transmitting unit 211 , there are a narrowband receiving unit 1402 and a narrowband transmitting unit 1401 capable of transmitting and receiving only through narrowband channels.

[0140] In FIG. 14, the transmission channel of the narrowband transmission unit 1401 is limited to a predetermined value or less, and transmits an RTS signal or a CTS signal. In addition, the transmission unit 211 is used for data transmission and the like, and the communication / response information generation unit 207 transmits an RTS signal or a CTS signal to the narrowband transmission unit 1401 .

[0141] Also, the narrowband reception unit 1402 limits the reception channel to a predetermined value or less, and receives the RTS signal and t...

no. 3 approach

[0147] FIG. 15 is a block diagram showing the configuration of a wireless communication device according to this embodiment.

[0148] In FIG. 15 , it differs from the first embodiment in that it has a collision counter 1501 and an nCTS counter 1502 .

[0149] The collision counter 1501 counts the number of times collisions occur per unit time.

[0150] Hereinafter, the operation of the wireless communication device according to this embodiment will be described. Note that the difference from the operation of the first embodiment is only the processing when an RTS frame is received, and the rest are the same.

[0151] Figure 16 It is a flowchart showing the processing when the communication data sorting unit 202 determines that it is an RTS frame, and corresponds to the operation of step S1104.

[0152] exist Figure 16 Among them, the operations from step S1301 to step S1305 are the same as those in the first embodiment.

[0153] In step S1303, when it is determined that t...

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Abstract

A radio communication device includes a communication data selection unit (202) for selecting from the received radio communication data, the radio communication data containing communication time reservation request information in which a time band for performing data transmission of the transmission source radio communication device is described and a communication information analysis unit (204) for extracting an identifier of the transmission source radio communication device and the data transmission reservation time band from the radio communication data communication time reservation request information. When the received radio communication data is destined to the local device, a communication / response information generation unit (207) correlates the identifier to the reservation time band, records them in a communication reservation table (206), and generates communication time reservation response information containing reservation time band information. A transmission unit (211) transmits the communication time reservation response information. Thus, it is possible to report a communication time band used by the local device to a radio communication device of the communication request source and a radio communication device in a surrounding transmission-enabled area. Accordingly, the other radio communication devices avoid the time band and it is possible to eliminate conflict of communication.

Description

technical field [0001] The present invention relates to a wireless communication method and a wireless communication device when performing AdHoc communication in a wireless communication network. Background technique [0002] Conventionally, as a wireless communication method and a wireless communication device for performing the AdHoc communication, for example, there is a method and a device described in Japanese Unexamined Patent Application Publication No. 2003-229869. FIG. 20 shows a wireless communication method described in JP-A-2003-229869. [0003] In FIG. 20, the wireless communication device sets the notification period of management information at predetermined time intervals, and transmits management information in which reception time information indicating the start position of its own information reception, reception window information, and reception period information are described. . The other wireless communication devices that have received the managem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/14H04W28/26H04W52/02H04W74/04
CPCY02B60/50H04W84/18Y02D30/70
Inventor 土居裕渡边善规三村政博
Owner PANASONIC CORP