KR20150016790A - Wireless LAN system utilizing broadcast internet-protocol address - Google Patents

Abstract

Disclosed is a wireless LAN system in which a wireless streaming server transmits streaming data to a plurality of wireless streaming client devices according to real time streaming protocol (RTSP). Wherein, the wireless streaming server transmits the streaming data to the wireless streaming client devices using real time transport protocol (RTP), converts the individual internet-protocol (IP) address of each of the wireless streaming client devices into a broadcast internet-protocol (IP) address, and uses the converted address.

Description

[0001] The present invention relates to a wireless local area network (LAN) system using broadcast Internet-protocol addresses,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates generally to a wireless local area network (LAN) system, and more particularly, to a wireless LAN system in which a wireless streaming server transmits streaming data to a plurality of wireless streaming client devices in accordance with RTSP (Real Time Streaming Protocol) (LAN) system.

A wireless LAN system in which a wireless streaming server transmits streaming data to a plurality of wireless streaming client devices in accordance with a Real Time Streaming Protocol (RTSP), the system comprising: a wireless streaming server The load is proportional to the number of wireless streaming client devices.

Therefore, when a wireless streaming server transmits streaming data to a plurality of wireless streaming client devices, there is a limit to the performance of a wireless streaming server. Accordingly, a plurality of wireless streaming client devices are unstably receiving the streaming data.

Thus, in order to solve the problem between a single wireless streaming server and a plurality of wireless streaming client devices, the following measures have been proposed.

First, a wireless streaming server increases the compression ratio of streaming data in proportion to the number of wireless streaming client devices. However, such a scheme has a problem of deteriorating the display quality.

Second, a wireless streaming server limits the number of wireless streaming client devices as a receiving object. However, such a scheme has a problem in that streaming data can not be transmitted to a plurality of wireless streaming client devices.

Korean Patent Publication No. 10-2012-0052897 (filed by Phil Technologies, Inc., entitled Device-Based Control System).

Embodiments of the present invention provide a wireless local area network (LAN) system capable of transmitting streaming data to a plurality of wireless streaming client devices without degrading display quality.

According to an aspect of the present invention, there is provided a wireless LAN system in which a wireless streaming server transmits streaming data to a plurality of wireless streaming client devices according to RTSP (Real Time Streaming Protocol) Quot;

Streaming data is transmitted to wireless streaming client devices using RTP (Real Time Transport Protocol)

And converts the respective Internet Protocol (IP) addresses of each of the wireless streaming client devices into a broadcast Internet Protocol (IP) address for use.

Advantageously, each of said wireless streaming client devices receiving streaming data from said wireless streaming server according to a Real Time Streaming Protocol (RTSP)

Receiving streaming data from the wireless streaming server using RTP (Real Time Transport Protocol)

And converts the respective Internet Protocol (IP) addresses of each of the wireless streaming client devices into a broadcast Internet Protocol (IP) address for use.

Preferably, when the wireless streaming server and each of the wireless streaming client devices communicate according to the Real Time Streaming Protocol (RTSP), the respective Internet Protocol (IP) addresses of the wireless streaming client devices Is used.

Advantageously, the wireless streaming server and each of the wireless streaming client devices are connected to a real-time transport control protocol (RTCP) using an individual Internet-protocol (IP) address of each of the wireless streaming client devices. .

Advantageously, the respective Internet-protocol addresses of each of said wireless streaming client devices are connected to a LAN Internet-Protocol (IP) address and a unique Internet-protocol (IP)

The individual Internet Protocol (IP) address of each of the wireless streaming client devices is changed to a broadcast Internet protocol (IP) address by changing the binary "0" IP) address.

According to an embodiment of the present invention, the wireless streaming server transmits streaming data to wireless streaming client devices using RTP (Real Time Transport Protocol) ) Address to a broadcast Internet Protocol (IP) address.

Accordingly, when the image data (Sdata) is transmitted according to the RTP (Real Time Transport Protocol), the wireless streaming server can transmit the streaming data to the plurality of wireless streaming client devices through a single wireless communication channel.

Accordingly, the operation load in the unit time of the wireless streaming server can be greatly reduced compared with the number of wireless streaming client devices.

That is, when the wireless streaming server transmits streaming data to a plurality of wireless streaming client devices, there is no limitation in the operation performance of the wireless streaming server. Accordingly, a plurality of wireless streaming client devices can stably receive the streaming data.

Therefore, the wireless streaming server does not need to increase the compression rate of the streaming data in proportion to the number of the wireless streaming client devices, so that the display image quality does not deteriorate.

In addition, since the wireless streaming server does not need to limit the number of wireless streaming client devices as a receiving object, the wireless streaming server can stably transmit streaming data to a plurality of wireless streaming client devices.

In summary, the wireless streaming server may transmit streaming data to a plurality of the wireless streaming client devices without degrading the display image quality.

1 is a diagram illustrating a wireless local area network (LAN) system according to an embodiment of the present invention.
FIG. 2 is a diagram illustrating an internal configuration of a wireless streaming server in FIG. 1. FIG.
FIG. 3 is a diagram illustrating an internal configuration of a wireless streaming client apparatus in FIG. 1. FIG.
FIG. 4 is a diagram illustrating layers of a communication control used in the control unit of FIG. 2 or FIG. 3 and an operation method thereof.
FIG. 5 is a block diagram illustrating the functional configuration of the streaming layer of FIG. 4 when the layers of FIG. 4 are used in the controller of FIG. 2 of a wireless streaming server.
FIG. 6 is a block diagram illustrating the functional configuration of the streaming layer of FIG. 4 when the layers of FIG. 4 are used in the controller of FIG. 3 of each wireless streaming client device.
7 is a diagram for explaining a procedure in which the wireless streaming server of FIG. 1 transmits streaming data to a wireless streaming client device according to RTSP (Real Time Streaming Protocol).
FIG. 8 is a diagram for explaining that RTP control is performed according to communication signals Srtcp of a Real Time Transport Control Protocol (RTCP) during transmission of streaming data Sdata according to RTP (Real Time Transport Protocol) to be.
FIG. 9 is a flow chart illustrating a method of transmitting individual Internet Protocol (IP) addresses of wireless streaming client devices to a broadcast Internet protocol (RTP) according to RTP (Real Time Transport Protocol) IP < / RTI > address.
10 is a diagram for explaining an example in which an individual Internet Protocol (IP) address of each of the wireless streaming client devices is converted to a broadcast Internet Protocol (IP) address.
FIG. 11 is a diagram illustrating a case where streaming data (Sdata) is transmitted according to the RTP (Real Time Transport Protocol) in FIG. 7 and the number of wireless streaming client devices Lt; RTI ID = 0.0 > wireless < / RTI >
FIG. 12 shows a case where a streaming data (Sdata) is transmitted according to the RTP (Real Time Transport Protocol) in FIG. 7 and a broadcast Internet Protocol (IP) address is applied according to the technique of the present invention. ≪ / RTI > FIG.

The following description and accompanying drawings are for understanding the operation according to the present invention, and parts that can be easily implemented by those skilled in the art can be omitted.

Further, the specification and drawings are not provided for the purpose of limiting the present invention, and the scope of the present invention should be determined by the claims. The terms used in the present specification should be construed to mean the meanings and concepts consistent with the technical idea of the present invention in order to best express the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

1 shows a wireless local area network (LAN) system in accordance with an embodiment of the present invention.

In FIG. 1, reference numeral 10 denotes a video signal generator such as a camera, reference numerals 1301 to 1399 denote display devices, and reference numeral 15 denotes a wireless local area network (LAN). In the case of this embodiment, the wireless LAN 15 adopts a wireless-fidelity (WiFi) communication protocol.

Referring to FIG. 1, a wireless streaming server 11 receives a video signal from a video signal generator 10, for example, a camera.

The wireless streaming server 11 executes a program for a wireless LAN (LAN) server and a program for a streaming server together. Here, the function of an access point (AP) is performed by executing a program for a wireless LAN (LAN) server.

Each of the plurality of wireless streaming client devices 1201 to 1299 executes a program for a wireless LAN (LAN) client and a program for a streaming client together.

The wireless streaming server 11 transmits the streaming data to the wireless streaming client devices 1201 to 1299 according to RTSP (Real Time Streaming Protocol).

Here, the wireless streaming server 11 transmits the streaming data to the wireless streaming client devices 1201 to 1299 using RTP (Real time Transport Protocol), and the streaming data of each of the wireless streaming client devices 1201 to 1299 And converts the individual Internet-protocol (IP) address into a broadcast Internet-protocol (IP) address. The related contents will be described in detail with reference to Figs. 2 to 12. Fig.

Accordingly, when the video data (Sdata) is transmitted according to the RTP (Real Time Transport Protocol), the wireless streaming server 11 transmits the streaming data to the plurality of wireless streaming client devices 1201 to 1299 through a single wireless communication channel Lt; / RTI >

Accordingly, the operation load in the unit time of the wireless streaming server 11 can be greatly reduced as compared with the number of the wireless streaming client devices 1201 to 1299.

That is, when the wireless streaming server 11 transmits the streaming data to the plurality of wireless streaming client devices 1201 to 1299, there is no limitation in the operation performance of the wireless streaming server. Accordingly, the plurality of wireless streaming client devices 1201 to 1299 can stably receive the streaming data.

Therefore, the wireless streaming server 11 does not need to increase the compression ratio of the streaming data in proportion to the number of the wireless streaming client devices 1201 to 1299, so that the display image quality does not deteriorate.

In addition, the wireless streaming server 11 does not need to limit the number of wireless streaming client devices 1201 to 1299 as reception targets, so that the plurality of wireless streaming client devices 1201 to 1299 can receive the streaming data Can be stably transmitted.

In summary, the wireless streaming server 11 can transmit streaming data to a plurality of wireless streaming client devices 1201 through 1299 without degrading the display image quality.

On the other hand, each of the wireless streaming client devices 1201 to 1299 that receive streaming data from the wireless streaming server 11 according to RTSP (Real Time Streaming Protocol) uses RTP (Real time Transport Protocol) (IP) address of each of the wireless streaming client devices 1201-1299 to a broadcast Internet Protocol (IP) address, in response to receiving streaming data from a wireless streaming server 11, And use it.

Of course, when the wireless streaming server 11 and each of the wireless streaming client devices 1201 to 1299 communicate according to the RTSP (Real Time Streaming Protocol), each of the wireless streaming client devices 1201 to 1299 Internet-protocol (IP) addresses are used.

The wireless streaming server 11 and each of the wireless streaming client devices 1201 through 1299 use the respective Internet-protocol (IP) addresses of each of the wireless streaming client devices 1201 through 1299 to provide RTCP time Transport Control Protocol).

FIG. 2 shows the internal structure of the wireless streaming server 11 in FIG. The direction of the arrow in Fig. 2 is shown only in the position of the video signal.

2 and 1, a wireless streaming server 11 includes an image input unit 201, a control unit 202, a wireless transceiver unit 203, and an antenna 204.

The video input unit 201 receives the video signal from the video signal generating apparatus 10 and converts the video signal into a digital video signal of a set format.

The control unit 202, which operates according to the layers of the communication control, compresses the video signal from the video input unit 201 and outputs it in the form of a packet for transmission.

Here, the wireless streaming server 11 transmits the streaming data to the wireless streaming client devices 1201 to 1299 using RTP (Real time Transport Protocol), and the streaming data of each of the wireless streaming client devices 1201 to 1299 And converts the individual Internet-protocol (IP) address into a broadcast Internet-protocol (IP) address.

The wireless transmission / reception unit 203 outputs a series of transmission packets from the control unit 202 as a signal of a set radio frequency.

The antenna 204 emits a signal of the set radio frequency from the control unit 202. [

Of course, the antenna 204 and the wireless transceiver 203 receive and process signals from the wireless streaming client devices 1201-1299.

FIG. 3 shows the internal configuration of the wireless streaming client device (e.g., 1201) in FIG. The direction of the arrow in Fig. 3 is shown only at the position of the video signal.

3 and 1, a wireless streaming client device (for example, 1201) includes an antenna 301, a wireless transceiver 302, a controller 303, and an image output unit 304.

An antenna 301 receives a signal of a set radio frequency incident through a wireless LAN (LAN).

The wireless transceiver 302 receives a radio frequency signal from the antenna 301 and generates a series of packet signals at a baseband frequency.

Of course, the wireless transceiver 302 and the antenna 301 process and emit the transmission signals from the controller 303.

The control unit 303 operating according to the layers of the communication control restores the compressed packet signal from the wireless transmitting / receiving unit 302 as the original video signal.

The video output unit 304 adjusts the video signal from the control unit 303 and outputs it to a display device (for example, 1301).

FIG. 4 shows the layers of communication control 41 used in the control unit 202 or 303 of FIG. 2 or FIG. 3 and its operation method.

2 to 4, the layers 41 of the communication control include a network connection layer 411, a communication layer 412, a streaming layer 413, and a control application layer 414. [ Here, the network connection layer 411 is implemented by hardware according to WiFi 2.4G or 5G, and the remaining layers 412 to 414 are implemented by software.

The communication layer 412 is formed by Transmission Control Protocol (TCP) and User Datagram Protocol (UDP).

The streaming layer 413 will be described with reference to FIGS. 5 and 6. FIG.

4 is used in the controller 202 of FIG. 2 of a wireless streaming server, the compressed packet Pt completed by the layers 41 of FIG. 4 is transmitted to the wireless streaming client device < RTI ID = 0.0 >Lt; / RTI >

4 is used in the control unit 303 of FIG. 3 of each of the wireless streaming client devices, the packet Pr reconstructed by the layers 41 of FIG. 4 is transmitted to the streaming layer 313 ) In the control application layer 414 by a link request from the control application layer 414.

FIG. 5 shows the functional configuration of the streaming layer 413 of FIG. 4 when the layers 41 of FIG. 4 are used in the controller 202 of FIG. 2 of a wireless streaming server.

5 and 4, the streaming layer 413 includes a real time streaming protocol (RTSP) 501, a real time transport control protocol (RTCP) 502, a real time transport protocol (RTP) 503, .

Here, the RTSP 501 in the streaming layer 413 is linked to the Transmission Control Protocol (TCP) in the communication layer 412.

The RTCP 502 and the RTP 503 in the streaming layer 413 are linked to UDP (User Datagram Protocol) in the communication layer 412.

Figure 6 shows the functional configuration of the streaming layer 413 of Figure 4 when the layers 41 of Figure 4 are used in the control 303 of Figure 3 of each of the wireless streaming client devices.

6 and 4, the streaming layer 413 includes a real time streaming protocol (RTSP) 601, a real time transport control protocol (RTCP) 602, a real time transport protocol (RTP) 603, .

Here, the RTSP 601 in the streaming layer 413 is linked to the Transmission Control Protocol (TCP) in the communication layer 412.

The RTCP 602 and the RTP 603 in the streaming layer 413 are linked to UDP (User Datagram Protocol) in the communication layer 412.

7 illustrates a procedure for the wireless streaming server 11 of FIG. 1 to transmit streaming data Sdata to a wireless streaming client device (for example, 1201) according to RTSP (Real Time Streaming Protocol) Fig. This transmission procedure will be described with reference to FIG.

First, a wireless streaming client device (for example, 1201) transmits a setting signal Sset to the wireless streaming server 11. Accordingly, the wireless streaming server 11 transmits the acknowledgment signal Sok1 to the wireless streaming client device 1201 after performing the setting operation.

Next, the wireless streaming client apparatus 1201 transmits the reproduction request signal Spla to the wireless streaming server 11. [ Accordingly, the wireless streaming server 11 transmits the acknowledgment signal Sok2 to the wireless streaming client apparatus 1201, and then transmits the streaming data Sdata to the wireless streaming client apparatus 1201 according to the RTP (Real Time Transport Protocol) (1201).

Here, the wireless streaming server 11 and the wireless streaming client apparatus 1201 exchange the RTCP communication signals Srtcp.

When the stop request signal Spau from the wireless streaming client apparatus 1201 is received by the wireless streaming server 11 while the streaming data Sdata is being transmitted as described above, the wireless streaming server 11 transmits the streaming data Sdata, And then transmits the acknowledgment signal Sok3 to the wireless streaming client apparatus 1201. [

Finally, when the wireless streaming server 11 receives the release request signal Sted from the wireless streaming client apparatus 1201, the wireless streaming server 11 disconnects the wireless streaming client apparatus 1201 from the wireless streaming client apparatus 1201 , And transmits an acknowledgment signal (Sok4) to the wireless streaming client apparatus (1201).

FIG. 8 is a diagram for explaining that RTP control is performed according to communication signals Srtcp of a Real Time Transport Control Protocol (RTCP) during transmission of streaming data Sdata according to RTP (Real Time Transport Protocol) to be. In Fig. 8, the same reference numerals as those in Fig. 1 denote objects having the same function. The operation of transmission of the streaming data (Sdata) and RTP control will be described with reference to FIGS. 8 and 7. FIG.

The wireless streaming server 11 compresses the transmission data according to the RTP (step S801), generates a packet (step S803), and transmits the streaming data (Sdata) to the wireless streaming client apparatus 1201. [

The wireless streaming client apparatus 1201 decompresses the packet of the received streaming data Sdata (step S805), restores the compressed data (step S807), and transmits the restored received data to the display device 1301).

Here, the wireless streaming client apparatus 1201 monitors the quality of service (QoS) according to the Real Time Transport Control Protocol (RTCP) (step S811) and transmits the monitoring result information to the RTCP communication signal Srtcp To the wireless streaming server 11.

Accordingly, the wireless streaming server 11 controls the compression rate of the data to be transmitted according to the information of the monitoring result received as the communication signal (Srtcp) of the RTCP (step S812).

9 shows an example in which when the video data Sdata is transmitted according to the RTP (Real Time Transport Protocol) in FIG. 7, the individual Internet-protocol (IP) addresses of the wireless streaming client devices 1201 to 1299 are broadcast ) Internet-protocol (IP) address. In Fig. 9, the same reference numerals as those in Fig. 1 denote objects having the same function.

Referring to FIG. 9, the wireless streaming server 11 transmits streaming data to the wireless streaming client devices 1201 to 1299 according to RTSP (Real Time Streaming Protocol).

Here, the wireless streaming server 11 transmits the streaming data to the wireless streaming client devices 1201 to 1299 using RTP (Real time Transport Protocol), and the streaming data of each of the wireless streaming client devices 1201 to 1299 (IP) addresses to broadcast Internet-protocol (IP) addresses (Abip).

Accordingly, when the video data (Sdata) is transmitted according to the RTP (Real Time Transport Protocol), the wireless streaming server 11 transmits the streaming data to the plurality of wireless streaming client devices 1201 to 1299 through a single wireless communication channel Lt; / RTI >

Accordingly, the operation load in the unit time of the wireless streaming server 11 can be greatly reduced as compared with the number of the wireless streaming client devices 1201 to 1299.

That is, when the wireless streaming server 11 transmits the streaming data to the plurality of wireless streaming client devices 1201 to 1299, there is no limitation in the operation performance of the wireless streaming server. Accordingly, the plurality of wireless streaming client devices 1201 to 1299 can stably receive the streaming data.

Therefore, the wireless streaming server 11 does not need to increase the compression ratio of the streaming data in proportion to the number of the wireless streaming client devices 1201 to 1299, so that the display image quality does not deteriorate.

In addition, the wireless streaming server 11 does not need to limit the number of wireless streaming client devices 1201 to 1299 as reception targets, so that the plurality of wireless streaming client devices 1201 to 1299 can receive the streaming data Can be stably transmitted.

In summary, the wireless streaming server 11 can transmit streaming data to a plurality of wireless streaming client devices 1201 through 1299 without degrading the display image quality.

On the other hand, each of the wireless streaming client devices 1201 to 1299 that receive streaming data from the wireless streaming server 11 according to RTSP (Real Time Streaming Protocol) uses RTP (Real time Transport Protocol) (IP) address of each of the wireless streaming client devices 1201 through 1299 to the Internet Protocol (IP) address of the wireless streaming server 11, Abip) to be used.

Of course, when the wireless streaming server 11 and each of the wireless streaming client devices 1201 to 1299 communicate according to the RTSP (Real Time Streaming Protocol), each of the wireless streaming client devices 1201 to 1299 Internet-protocol (IP) addresses are used.

In addition, the wireless streaming server 11 and each wireless streaming client device 1201 through 1299 may use the respective Internet-protocol (IP) addresses of each of the wireless streaming client devices 1201 through 1299 to determine the RTCP (Real time Transport Control Protocol).

As described with reference to FIG. 6, the RTSP 601 is linked to the Transmission Control Protocol (TCP) at the communication layer 412. In addition, the RTCP 602 and the RTP 603 in the streaming layer 413 are linked to UDP (User Datagram Protocol) in the communication layer 412.

Figure 10 is a flow diagram illustrating an example of a method of providing an Internet Protocol (IP) address (Abip) with a separate Internet-Protocol (IP) address Aiip of each wireless streaming client device (1201-1299 in Figures 1 and 9) Fig.

Referring to Figures 1, 9 and 10, the individual Internet-protocol addresses Aiip of each of the wireless streaming client devices 1201 through 1299 are associated with a LAN Internet-Protocol (IP) address (Alan) (IP) address (Ainh) is connected.

Here, the binary "0" in the unique Internet-protocol (IP) address Ainh is all changed to "1 " (Aiip) is converted to a broadcast Internet-protocol (IP) address (Abip).

For the present embodiment, the unique Internet-Protocol (IP) addresses Ainh have a range of decimals 0 through 254, all of which are converted to decimal 255.

FIG. 11 shows a case where individual Internet-protocol (IP) addresses (Aiip in FIG. 10) are applied according to a conventional technique when streaming data Sdata is transmitted according to RTP Wireless communication channels are created by the number of wireless streaming client devices 1201-1299.

Referring to FIGS. 7 to 11, when individual Internet-protocol (IP) addresses Aiip are applied according to the conventional technology, the wireless streaming server 11 transmits 99 wireless It is necessary to transmit the streaming data (Sdata) to each of the streaming client devices 1201 to 1299.

12 is a diagram illustrating a broadcast Internet Protocol (IP) address (Abip in FIG. 10) according to the present invention when image data (Sdata) is transmitted according to RTP (Real Time Transport Protocol) Shows that a single wireless communication channel is created when applied.

7 to 12, when a broadcast Internet Protocol (IP) address (Abip) is applied according to an embodiment of the present invention, the wireless streaming server 11 transmits Transmits streaming data (Sdata) to each of the wireless streaming client devices (1201 to 1299).

As described above, according to an embodiment of the present invention, a wireless streaming server transmits streaming data to wireless streaming client devices using RTP (Real Time Transport Protocol) - Convert protocol (IP) address to broadcast internet protocol (IP) address and use.

Accordingly, when the video data (Sdata) is transmitted according to the RTP (Real Time Transport Protocol), the wireless streaming server can transmit streaming data to a plurality of wireless streaming client devices through a single wireless communication channel.

Accordingly, the operation load in a unit time of the wireless streaming server can be greatly reduced compared to the number of wireless streaming client devices.

That is, when a wireless streaming server transmits streaming data to a plurality of wireless streaming client devices, there is no limitation in the performance of a wireless streaming server. Accordingly, a plurality of wireless streaming client devices can stably receive the streaming data.

Therefore, the wireless streaming server does not need to increase the compression ratio of the streaming data in proportion to the number of wireless streaming client devices, so that the display image quality does not deteriorate.

In addition, the wireless streaming server can reliably transmit streaming data to a plurality of wireless streaming client devices, since there is no need to limit the number of wireless streaming client devices as a receiving object.

In summary, a wireless streaming server can transmit streaming data to a plurality of wireless streaming client devices without degrading the display image quality.

The present invention has been described above with reference to preferred embodiments. It will be understood by those skilled in the art that the present invention may be embodied in various other forms without departing from the spirit or essential characteristics thereof. Therefore, the above-described embodiments should be considered in a descriptive sense rather than a restrictive sense. The scope of the present invention is defined by the appended claims rather than by the foregoing description, and the inventions claimed by the claims and the inventions equivalent to the claimed invention are to be construed as being included in the present invention.

It is likely to be used in a wired LAN system.

10: Image signal generator,
11: wireless streaming server,
1201 to 1299: wireless streaming client devices,
1301 to 1399: display devices, 15: wireless LAN,
201: image input unit, 202: control unit,
203: wireless transmitting / receiving unit, 204: antenna,
301: antenna, 302: wireless transmitting / receiving unit,
303: control unit, 304: video output unit,
41: layers of communication control, 411: network connection layer,
412: communication layer, 413: streaming layer,
414: control application layer, Pt: packet for transmission,
Pr: Packet received, 501,601: RTSP,
502,602: RTCP, 503,603: RTP,
504 compression section, 604 decompression section,
Sset: setting signal, Spla: playback request signal,
Sok1 to Sok4: acknowledgment signals, Sdata: streaming data,
Srtcp: RTCP communication signals, Spau: Stop request signal,
Sted: release request signal, S801: compression operation,
S803: Packet generation operation, S805: Packet decomposition operation,
S807: restoration operation,
S811: service-quality (Qos) monitoring operation, S812: compression rate control operation,
TCP: Transmission Control Protocol, UDP: User Datagram Protocol,
Abip: Broadcast Internet-Protocol (IP) address,
Aiip: an individual Internet-protocol (IP) address,
Area: LAN Internet-Protocol (IP) address,
Ainh: Unique Internet-Protocol (IP) address.

Claims (5)

1. A wireless local area network (LAN) system in which a wireless streaming server transmits streaming data to a plurality of wireless streaming client devices in accordance with a Real Time Streaming Protocol (RTSP)
The wireless streaming server comprises:
Streaming data is transmitted to wireless streaming client devices using RTP (Real Time Transport Protocol)
(IP) address of each of the wireless streaming client devices to a broadcast Internet-protocol (IP) address for use. The method of claim 1, wherein each of the wireless streaming client devices, which receive streaming data from the wireless streaming server according to a Real Time Streaming Protocol (RTSP)
Receiving streaming data from the wireless streaming server using RTP (Real Time Transport Protocol)
(IP) address of each of the wireless streaming client devices to a broadcast Internet-protocol (IP) address for use. 3. The method of claim 2, wherein the wireless streaming server and each wireless streaming client device communicate according to the Real Time Streaming Protocol (RTSP)
Wherein individual Internet Protocol (IP) addresses of each of the wireless streaming client devices are used. 4. The method of claim 3, wherein the wireless streaming server and each wireless streaming client device are configured to:
And performs communication according to a Real Time Transport Control Protocol (RTCP) using an individual Internet Protocol (IP) address of each of the wireless streaming client devices. 3. The method of claim 2,
The individual Internet-protocol addresses of each of the wireless streaming client devices are connected to a LAN Internet-protocol (IP) address and a unique Internet-protocol (IP) address,
The individual Internet Protocol (IP) address of each of the wireless streaming client devices is changed to a broadcast Internet protocol (IP) address by changing the binary "0" IP) address.

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