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Real-time multimedia transmitting system and method

A transmission system and multimedia technology, applied in the field of real-time multimedia transmission system, can solve the problems of unsupported equipment wireless work efficiency, network wireless work efficiency decline, and inability to improve, so as to improve channel utilization, downlink bandwidth, and bandwidth utilization rate and the effect of data transfer efficiency

Inactive Publication Date: 2010-05-12
LENOVO (BEIJING) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Although 802.11e can be combined with other mechanisms to prevent collisions between data packets, its problem is that the standard gives the power of prioritization to the client
[0013] In addition, the mechanism based on this standard requires a comprehensive upgrade of network equipment, which cannot improve the wireless work efficiency of devices that do not support the new standard
In the case of mixed use of new equipment and old equipment, the wireless work efficiency of the entire network will be significantly reduced

Method used

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  • Real-time multimedia transmitting system and method

Examples

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Comparison scheme
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Embodiment 1

[0033] figure 2 It is a structural diagram of Embodiment 1 of the real-time multimedia transmission system of the present invention, wherein the real-time multimedia transmission system includes multiple user equipments, multiple proxy client modules, multiple access points, a package server, and at least one positioning A server, wherein a plurality of access points are connected to the package server.

[0034] The difference from the existing real-time voice / video transmission scheme is that the real-time multimedia transmission system of the present invention adds a package server and a proxy client module. Wherein, the package server is used to reassemble the media data; the proxy client module is used to execute connection, registration and call requests between the source user equipment and the destination user equipment. The proxy client module is in one-to-one correspondence with the user equipment, and can be located inside or outside the user equipment.

[0035] ...

Embodiment 2

[0063] Figure 6 It is a structure diagram of Embodiment 2 of the real-time multimedia transmission system of the present invention. Compared with the system in Embodiment 1, the system adds a default package server, and the number of package servers is at least two. The default package server is connected to all access points and package servers respectively.

[0064] The difference between the default package server and the package server is: the network status storage unit of the default package server stores the addresses of all package servers deployed in the network, as well as all the access points and package addresses in the network. Server correspondence. It inquires the corresponding relationship between each access point and the packet server stored in the network state storage unit according to the access point connected by the user equipment, and feeds back the address of the corresponding packet server to the user equipment.

[0065] The media data transmissio...

Embodiment 3

[0089] The real-time multimedia transmission system of the third embodiment is the same as the real-time example 1.

[0090] The real-time multimedia transmission method of this embodiment differs from that of Embodiment 1 in that Step 4 is different. In step 4 of this embodiment, the agent client module judges whether voice / video data is included in the data packet sent by the user equipment, and if voice / video data is included, the data grouping unit of the agent client module performs Local reassembly, combining multiple small packets into a large packet, and compressing the headers of multiple consecutive packets to increase the payload of the data packet and reduce the workload of the packet server. Then, the proxy client module submits the reassembled voice / video data to the registered package server through the access point.

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Abstract

The system includes at least a positioning server, multiple access points, multiple user equipments (UE), and at least a grouped packet server, and multiple pieces of proxy client end module (PCEM) corresponding to user equipments respectively. Through corresponding PCEM, UE sends and receives control signaling, and media data. Through access points, and positioning server, PCEM sends control signaling to UE, and receives controlling signaling fed back from UE; and through access points, PCEM sends media data received by UE to the grouped packet server, and sends media data received by the grouped packet server to corresponding UE. The grouped packet server recombines received media data, and sends recombined data through access points to PCEM. The invention raises real time performance ofmultimedia transmission under WIFI network.

Description

technical field [0001] The invention relates to the field of multimedia transmission, in particular to a real-time multimedia transmission system and method. Background technique [0002] WIFI (Wireless Fidelity) is a wireless local area network technology based on 802.11 series. In the WIFI network environment, it supports two channel access methods: distributed access method (DCF) based on CSMA / CA (carrier sense / collision avoidance) and here Centralized control method (PCF) above. [0003] When a wireless device works in an access point-based mode, multiple wireless devices generally use a CSMA / CA channel access method to share a wireless channel. Under this mechanism, the wireless device first obtains the right to use the wireless link through competition, and then uploads the data packet to the access point. The access point caches the data packet sent by the wireless device and obtains the control right of the wireless network. Afterwards, the packet is delivered to t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L29/06H04N21/643H04N21/6437
Inventor 于辰涛
Owner LENOVO (BEIJING) LTD
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