CN104980955A - Method for improving transfer rate of Wi-Fi Display - Google Patents
Method for improving transfer rate of Wi-Fi Display Download PDFInfo
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- CN104980955A CN104980955A CN201510344291.0A CN201510344291A CN104980955A CN 104980955 A CN104980955 A CN 104980955A CN 201510344291 A CN201510344291 A CN 201510344291A CN 104980955 A CN104980955 A CN 104980955A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention discloses a method for improving the transfer rate of a Wi-Fi Display, comprising an audio and video transmission application function module. The method is characterized in that audio and video data of a data source is packaged and partitioned by MPEG2-TS after being compressed by a H. 264 protocol, sequentially passes through an RTP/RTCP network application layer, a UDP/TCP network transport layer, a TCP/IP network transport layer, a Wi-Fi P2P physical layer and a data link layer, and arrives at a service terminal. The quality of service QoS of the whole transmitted same-screen image is very high, and the efficiency and speed of data transmission are very high. The defects in the prior art, for example, the process of transmission is vulnerable to the interference of equipment around in a wireless band (2.4G or 5G) under the condition of invariable WIFI bandwidth, and especially, the television screen is prone to lag and even blur, are improved. The method is favorable to the popularization and application of the WIFI Display. High-speed audio and video transmission between equipment can be realized.
Description
Technical field
The present invention relates to a kind of method improving Wi-Fi Display transmission speed.
Background technology
Wi-Fi Display, mobile phone/mobile PC-TV/display can realize wireless connections.This standard is by WiFi wireless industry Leagues enact, and also in testing, technology can compress 3D video, thus is transmitted by Wi-Fi.3D video consumes bandwidth very much, will be sluggish if do not compressed, and time of delay can be dropped to below one of percentage millisecond by Wi-Fi Display technology.
In fact Miracast is exactly the authentication name (this authentication item 2012 year September formally start) of WiFi alliance (WiFi Alliance) to the equipment of support WiFi Display function.And by the equipment of Miracast certification, connected by P2P, realize equipment room high-speed transfer video.
Wi-Fi Display user can browse the photo that smart mobile phone takes heartily on large-size screen monitors TV, local video is projected to large-size screen monitors television-viewing.Two devices are by serving as ' Server (Source)-Push ' and ' interactive model of Client (Sink)-Pull ' respectively after Wi-Fi P2P successful connection.
But owing to using wireless transmission video, when WIFI bandwidth is constant, transmitting procedure is easy to the equipment interference being subject to wireless (2.4G or 5G) frequency range around, when particularly carrying out video push, easily there is card in video screen, even flower screen, the present invention is exactly to solve this problem.
Summary of the invention
In order to overcome the deficiency of existing technology, the invention provides a kind of method improving Wi-Fi Display transmission speed.
Technical solution of the present invention is as described below:
A kind of method improving Wi-Fi Display transmission speed, comprise audio video transmission applied function module, it is characterized in that, the Voice & Video data of data source are by after H.264 Protocol compression, packed by MPEG2-TS and split, successively by RTP/RTCP network application layer, UDP/TCP transport network layer, TCP/IP transport network layer and WiFi P2P physical layer and data link layer, arrive service terminal.
Further, the Voice & Video data of described data source comprise transmission of video source and audio transmission source,
Further, described transmission of video source is the content that the source screens such as current phone are showing, and described audio transmission source is the sound that the sources such as current phone are being play.
Further, by after H.264 agreement is compressed, to be packed segmentation by MPEG2-TS, then transmitted by Real-time Transport Protocol in described transmission of video source and described audio transmission source.
Further, described Real-time Transport Protocol initiates BlueDrama, and the session channel of described BlueDrama comprises the described WiFi P2P physical layer and data link layer, described TCP/IP transport network layer, described UDP/TCP transport network layer and described RTP/RTCP network application layer that arrange in turn from described service terminal.
Further, described Real-time Transport Protocol transmits data further by UDP host-host protocol, and the BlueDrama of being initiated by described Real-time Transport Protocol is once set up, and host-host protocol can not be changed.
Further, in described WiFi P2P physical layer and data link layer, by the transmission rate selecting WiFi P2P best effort channel to adjust described data source and described service terminal, thus ensure the whole service quality QoS with screen mirror image.
According to the present invention of said structure, its beneficial effect is, the whole service quality QoS with screen mirror image of transmission is very high, the transmission efficiency of data and also very high several times, improve in prior art, when WIFI bandwidth is constant, transmitting procedure is easy to the equipment interference being subject to wireless (2.4G or 5G) frequency range around, when particularly carrying out video push, easily there is card in video screen, even the defect such as Hua Ping, is more conducive to applying of WiFi Display, realizes equipment room high-speed transfer audio frequency and video.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is transfer process figure of the present invention.
Fig. 3 is the program segment sectional drawing that the present invention configures inside P2P config.
Embodiment
Below in conjunction with accompanying drawing and execution mode, the present invention is conducted further description:
As shown in Figure 1 to Figure 2, the present invention includes audio video transmission applied function module, the Voice & Video data of data source are by after H.264 Protocol compression, packed by MPEG2-TS and split, successively by RTP/RTCP network application layer, UDP/TCP transport network layer, TCP/IP transport network layer and WiFi P2P physical layer and data link layer, arrive service terminal.
The Voice & Video data of described data source comprise transmission of video source and audio transmission source, and described transmission of video source is the content that the source screens such as current phone are showing, and described audio transmission source is the sound that the sources such as current phone are being play.
In the present embodiment, by after H.264 agreement is compressed, to be packed segmentation by MPEG2-TS, then transmitted by Real-time Transport Protocol in described transmission of video source and described audio transmission source.Real-time Transport Protocol is the application layer protocol of Miracast, and Voice & Video data are by this protocol transmission.Described Real-time Transport Protocol initiates BlueDrama, and the session channel of described BlueDrama comprises the described WiFi P2P physical layer and data link layer, described TCP/IP transport network layer, described UDP/TCP transport network layer and described RTP/RTCP network application layer that arrange in turn from described service terminal.
If according to old WiFi P2P agreement, person (group owner) consults to select one of them channel to be connected with from equipment (client) only to need fabric anomaly in connection procedure, and the interference regardless of this channel is large or little.If add screening preferred channels to connect, then can greatly reduce data packetloss, improve transmission rate, thus ensure the whole service quality QoS with screen mirror image.
In WiFi P2P physical layer and data link layer, when starting WiFi and connecting (start WiFi direct), program segment is as shown in Figure 3 set inside P2P config, WiFi by received by each channel of statistics (channel) receive data number decide best channel, thus obtain optimum signal.
Because the throughput of WiFi Display transmission requirement WiFi is higher, but WiFi can be subject to the signal disturbing of extraneous 2.4G or 5G, if so select one to be disturbed relatively less signal carry out work, more a step efficiency and the speed of transmission data can be improved like this.
Should be understood that, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection range that all should belong to claims of the present invention.
By reference to the accompanying drawings exemplary description is carried out to patent of the present invention above; the realization of obvious patent of the present invention is not subject to the restrictions described above; as long as have employed the various improvement that method is conceived and technical scheme is carried out of patent of the present invention; or the design of patent of the present invention and technical scheme directly applied to other occasion, all in protection scope of the present invention without to improve.
Claims (7)
1. one kind is improved the method for Wi-Fi Display transmission speed, comprise audio video transmission applied function module, it is characterized in that, the Voice & Video data of data source are by after H.264 Protocol compression, packed by MPEG2-TS and split, successively by RTP/RTCP network application layer, UDP/TCP transport network layer, TCP/IP transport network layer and WiFi P2P physical layer and data link layer, arrive service terminal.
2. the method improving Wi-Fi Display transmission speed according to claim 1, is characterized in that, the Voice & Video data of described data source comprise transmission of video source and audio transmission source.
3. the method improving Wi-Fi Display transmission speed according to claim 2, is characterized in that, described transmission of video source is the content that the source screens such as current phone are showing, and described audio transmission source is the sound that the sources such as current phone are being play.
4. the method improving Wi-Fi Display transmission speed according to claim 2, is characterized in that, by after H.264 agreement is compressed, to be packed segmentation by MPEG2-TS, then transmitted by Real-time Transport Protocol in described transmission of video source and described audio transmission source.
5. the method improving Wi-Fi Display transmission speed according to claim 4, it is characterized in that, described Real-time Transport Protocol initiates BlueDrama, and the session channel of described BlueDrama comprises the described WiFi P2P physical layer and data link layer, described TCP/IP transport network layer, described UDP/TCP transport network layer and described RTP/RTCP network application layer that arrange in turn from described service terminal.
6. the method improving Wi-Fi Display transmission speed according to claim 5, it is characterized in that, described Real-time Transport Protocol transmits data further by UDP host-host protocol, and the BlueDrama of being initiated by described Real-time Transport Protocol is once set up, and host-host protocol can not be changed.
7. the method improving Wi-Fi Display transmission speed according to claim 1, it is characterized in that, in described WiFi P2P physical layer and data link layer, by the transmission rate selecting WiFi P2P best effort channel to adjust described data source and described service terminal, thus ensure the whole service quality QoS with screen mirror image.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510344291.0A CN104980955A (en) | 2015-06-19 | 2015-06-19 | Method for improving transfer rate of Wi-Fi Display |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510344291.0A CN104980955A (en) | 2015-06-19 | 2015-06-19 | Method for improving transfer rate of Wi-Fi Display |
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| CN104980955A true CN104980955A (en) | 2015-10-14 |
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| CN201510344291.0A Pending CN104980955A (en) | 2015-06-19 | 2015-06-19 | Method for improving transfer rate of Wi-Fi Display |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106604403A (en) * | 2017-01-12 | 2017-04-26 | 惠州Tcl移动通信有限公司 | Miracast-protocol-based channel selection method and system |
| CN108055671A (en) * | 2017-12-13 | 2018-05-18 | 深圳创维－Rgb电子有限公司 | More equipment communication means, device, equipment and storage medium |
| CN109587712A (en) * | 2018-11-23 | 2019-04-05 | 南京极域信息科技有限公司 | A kind of WiFi-Display performance optimization method |
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2015
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| US20050259613A1 (en) * | 2004-05-13 | 2005-11-24 | Harinath Garudadri | Method and apparatus for allocation of information to channels of a communication system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106604403A (en) * | 2017-01-12 | 2017-04-26 | 惠州Tcl移动通信有限公司 | Miracast-protocol-based channel selection method and system |
| CN106604403B (en) * | 2017-01-12 | 2021-11-23 | 惠州Tcl移动通信有限公司 | Miracast protocol-based channel selection method and system |
| CN108055671A (en) * | 2017-12-13 | 2018-05-18 | 深圳创维－Rgb电子有限公司 | More equipment communication means, device, equipment and storage medium |
| CN108055671B (en) * | 2017-12-13 | 2021-11-09 | 深圳创维－Rgb电子有限公司 | Multi-device communication method, device, equipment and storage medium |
| CN109587712A (en) * | 2018-11-23 | 2019-04-05 | 南京极域信息科技有限公司 | A kind of WiFi-Display performance optimization method |
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