CN103338412A - Adaptive video coding systemcwireless adaptive modulation and coding - Google Patents

Abstract

The invention provides an adaptive video coding system combining with wireless adaptive modulation and coding and relates to an adaptive video coding method based on mobile wireless modulation and coding. The adaptive video coding system comprises a coding end, a wireless channel and a decoding end; a physical layer of the coding end adopts adaptive modulation and coding (AMC) technology and a link layer of the coding end adopts automatic repeat request (ARQ) technology to upload MCS number values to the decoding end through the wireless channel; the coding end obtains a maximum number of retransmission from the decoding end; and an application layer of the decoding end performs adaptive adjustment through the adaptive video coding system. According to the adaptive video coding system of the invention, channel changes can be sensed through the feedback and cooperation between physical layers, link layers and application layers, such that the output bitrate of an application layer of a transmitting end and the decoding rate of a receiving end can be changed, and the output quality of wireless video transmission can be effectively improved.

Description

The adaptive video coding system of combining wireless adaptive modulation and coding

[technical field]

The present invention relates to a kind of mobile wireless modulation and the adaptive video coding method of encoding, especially relate to a kind of adaptive video coding system of combining wireless adaptive modulation and coding.

[background technology]

Known, wireless video communication has become the core component of the third generation and the 4th third-generation mobile communication business development, also is the new business development direction of each big common carrier; Wireless video also satisfies the growing video communication demand of people, provides high-quality video service anywhere or anytime by common carrier, can satisfy video business meetings, forestry fire prevention, education and other demand; This area researcher has made a large amount of research and test for better high-quality service is provided in radio communication and field of video encoding; In recent years, the technology of wireless video communication and association area had all obtained huge development.Aspect radio communication, new wireless technology standard such as WiFi, WiMAX, 3G, Beyond3G, LTE etc. provides more wide stage for video communication; At the video encoding context, the H.26x series that the MPEG series that the IEC of ISO/ International Electrotechnical Commission of International Standards Organization formulates and the ITU-T of International Telecommunications Union formulate and AVS (the Audio VideoCoding Standard Workgroup of China of Chinese independent intellectual property right, AVS) all promoting the development of video standard, the formulation of these standards makes that the associated video coding can satisfy from wireless flow media to the HD digital TV etc. and has a series of application that different quality requires always.Yet although these technology have obtained very big development, because wireless channel has a lot of special features, the high-quality video of real-time Transmission still is faced with great challenge in wireless environment, main cause of failures have following some.

1), bandwidth fluctuation is big:

The throughput of wireless channel can be subjected to the influence of factors such as multipath fading, time delay expansion, noise effect and multiple access interference, and the capacity of wireless channel can fluctuate along with the variation of the distance between base station and the mobile host.When portable terminal moved between heterogeneous networks, channel width tended to take place violent variation, and this acute variation can further cause the big ups and downs of receiving terminal picture quality again, influenced people's subjective feeling.

2), limited channel width resource:

Different with general data service, the broadcast of video has the hard real time requirement, and this just requires transmission network to provide enough bandwidth for the video transmission.And the channel width resource of wireless network is very limited, in order to transmit the video data of magnanimity in the limited network bandwidth, must adopt compression algorithm and decompression algorithm efficiently.Therefore, not only should have compressed capability efficiently towards the video of wireless communications environment coding, also must carry out effective Rate Control, make coding side bit rate output can with the channel width matched well.

3), the high channel error rate:

Compare with wire message way, wireless channel has bigger noise.The time-varying characteristics of wireless network and noise effect usually make the reliability of transmission greatly reduce, and continuous, paroxysmal error of transmission occurs through regular meeting in wireless transmission.The error rate of wireless channel is generally 10 ^-5More than, sometimes even up to 10 ^-2There is very strong correlation in video code flow after the high compression, the error code that produces during therefore to transmission is very responsive, in case error code has taken place, not only influence the recovery of these frame error code data, also can influence the recovery of other associated frame data, cause " mistake spreads " (Error Propagation), make and recover the signal generation gross error of coming out, thereby the video quality of rebuilding is had destructive influences.

Owing to exist these problems, the robustness of wireless video transmission becomes the key technology difficult problem of wireless video communication system, designs suitable adaptive coding system for guaranteeing that the real-time video transmission quality plays crucial effects.The harmful effect that this system should eliminate the wireless signal-path band width fluctuation adaptively and than high bit-error wireless video be transmitted.

[summary of the invention]

In order to overcome the deficiency in the background technology, the invention discloses a kind of adaptive video coding system of combining wireless adaptive modulation and coding, thereby the present invention changes the decode rate that changes transmitting terminal application layer bit rate output and receiving terminal by the cooperation of the feedback between physical layer, link layer, application layer channel perception, has effectively improved the output quality of wireless transmission video.

For achieving the above object, the present invention adopts following technical scheme:

A kind of adaptive video coding system of combining wireless adaptive modulation and coding comprises coding side, wireless channel and decoding end; The physical layer AMC technology of coding side and link layer ARQ technology are uploaded to decoding end MCS number value via wireless channel, and coding side to decoding end is obtained maximum retransmission, and the decoding end application layer is made accommodation by the adaptive video coding system.

The adaptive video coding system of described combining wireless adaptive modulation and coding, wherein the physical layer of coding side will this layer reports the application layer of coding section at Modulation and Coding Scheme (MCS) information of carrying out selecting Adaptive Modulation and Coding (AMC) back of channel quality, thereby obtained current channel conditions, so that the coding section link layer is made accommodation;

Further, link layer is by the number of retransmissions N of ARQ technology with present frame _iAnd maximum retransmission N _MaxReport the application layer of coding side;

The information that the application layer of described coding side reports according to link layer and physical layer and send capacity utilization δ in the Buffer Pool _SendCode check R when adjusting coding _SendThereby, avoid retransmitting transmission delay and the channel occupancy that causes by wireless channel;

Through wireless channel to the video information of receiving terminal according to the capacity utilization δ that receives in the Buffer Pool _ReciveAdjust the decode rate R of video _ReciveThereby, video playing quality is guaranteed subjective;

But described adaptive modulation and coding is as follows at the scene modeling:

A, Video transmission system comprise three parts: coding side, wireless channel, decoding end;

B, physical layer are used the AMC technology, establish total N kind MCS, the different SNR intervals of respectively corresponding N kind;

C, be P at different channel conditions and the expection packet loss under the MCS _n(n=1,2 ..., N);

D, link layer adopt and block the re-transmission of ARQ technical guarantee misdata, and the greatest admissible retransmission value that defines single frame is N _Max, the expectation number of retransmissions is N ' _n

E, the Buffer Pool capacity utilization that defines coding side and decoding end respectively are δ _Send, δ _ReciveAnd according to the value of utilization rate the Buffer Pool state is divided into three kinds of states: undersaturation (0＜δ＜1/4), saturated (1/4≤δ＜3/4), supersaturation (3/4≤δ＜1).

The adaptive video coding system of described combining wireless adaptive modulation and coding, concrete scheme may further comprise the steps:

A, application layer are used the intermediate value SNR in the channel SNR interval of each MCS correspondence according to the AMC technical scheme that physical layer adopts _n(n=1,2 ..., N) estimate the throughput R of each scheme correspondence _n(n=1,2 ..., N) with packet loss P _n(n=1,2 ..., N);

B, physical layer report the MCS numbering n of present employing;

C, application layer are determined current R according to the MCS numbering n of current employing _nAnd P _n

D, link layer are with the current greatest admissible retransmission value N that sets by the ARQ technology _MaxReport application layer;

E, application layer are according to the packet loss P that expects _nThe N that reports with link layer _MaxCalculate the desired value of each frame number of retransmissions:

$N_n^{\′}=(1-P_n^{N_{\max }+1})/(1-P_n)$

F, transmitting terminal application layer, are adjusted into transmission rate because packet retransmits the time-delay that brings in order to reduce

R′ _send＝R _n/N′ _n

G, transmitting terminal are according to the capacity utilization δ that sends in the Buffer Pool _SendSize continue to adjust final transmission rate

$R_{\mathrm{send}}=\left\{\begin{array}{cc}{\mathrm{\&gamma;}}_1{R}_{\mathrm{send}}^{\&prime;},& \mathrm{if}0<{\mathrm{\&delta;}}_{\mathrm{send}}<1/4\\ {\mathrm{\&gamma;}}_2{R}_{\mathrm{send}}^{\&prime;},& \mathrm{if}1/4\&le;{\mathrm{\&delta;}}_{\mathrm{send}}<3/4\\ {\mathrm{\&gamma;}}_3{R}_{\mathrm{send}}^{\&prime;},& \mathrm{if}3/4\&le;{\mathrm{\&delta;}}_{\mathrm{send}}<1\end{array}\right.$

γ wherein ₁, respectively the speed under the various states is adjusted parameter in the corresponding Buffer Pool, can choose flexibly according to actual environment;

H, receiving terminal are according to the capacity utilization δ that receives in the Buffer Pool _ReciveSize and the throughput valuation R of MCS correspondence _nAdjust decode rate

$R_{\mathrm{recive}}=\left\{\begin{array}{cc}{\mathrm{\&tau;}}_1{R}_n,& \mathrm{if}0<{\mathrm{\&delta;}}_{\mathrm{recive}}<1/4\\ {\mathrm{\&tau;}}_2{R}_n,& \mathrm{if}1/4\&le;{\mathrm{\&delta;}}_{\mathrm{recive}}<3/4\\ {\mathrm{\&tau;}}_3{R}_n,& \mathrm{if}3/4\&le;{\mathrm{\&delta;}}_{\mathrm{recive}}<1\end{array}\right.$

τ wherein ₁, respectively the speed under the various states is adjusted parameter in the corresponding Buffer Pool, can choose flexibly according to actual environment.

The adaptive video coding system of described combining wireless adaptive modulation and coding, coding side comprises inter prediction encoding, intraframe predictive coding, interweaving encoding or entropy coding.

The adaptive video coding system of described combining wireless adaptive modulation and coding, radio channel state can be modeled as Gaussian channel, Rayleigh channel or Rice channel etc., the mode that system adopts Adaptive Modulation change at different channel conditions that modulating mode and code rate reduce since multipath fading and Doppler effect to the influence of transmission quality.

The adaptive video coding system of described combining wireless adaptive modulation and coding, decoding end are travelling carriage in the mobile communication; Or terminal; Or the decode system of signal transmission pylon base station; Or set-top box; Or mobile phone terminal.

The application of the adaptive video coding system of described combining wireless adaptive modulation and coding, the adaptive video coding system of described adaptive modulation and coding is applicable in the arbitrary standard of physical condition acceptable.

The application of the adaptive video coding system of described combining wireless adaptive modulation and coding is applicable in the 3G/LTE environment; Or be applicable under the environment of wifi communication; Or the system platform of the 3G/LTE environment fusion of communicating by letter with wifi.

Owing to adopted technique scheme, the present invention to have following beneficial effect:

The adaptive video coding system of combining wireless adaptive modulation and coding of the present invention, thereby the feedback cooperation channel perception that the present invention is based between physical layer, link layer, the application layer changes the decode rate that changes transmitting terminal application layer bit rate output and receiving terminal, finally improves the output quality of wireless transmission video; Scheme disclosed by the invention is applied to the video transmission under the cable network environment before being different from, and breaks in the osi model independently transmission means of each layer, has adapted to the transmission of video flowing in the changeable wireless environment of channel condition better.

[description of drawings]

Fig. 1 is the Video transmission system structural representation under the wireless channel of the present invention;

Fig. 2 is the concrete scheme schematic diagram of each layer cooperation of the present invention;

[embodiment]

Can explain the present invention in more detail by the following examples, the present invention is not limited to the following examples, discloses purpose of the present invention and is intended to protect all changes and improvements in the scope of the invention; Need to prove: only be to realize that typical case of the present invention is routine for what describe in the embodiment of the invention; be not to realize whole embodiment of the present invention, those skilled in the art need not following of creative work obtain of the present invention be equal to replace and become bad embodiment all belong to protection scope of the present invention.

The adaptive video coding system of the combining wireless adaptive modulation and coding described in 1 or 2 the present invention is directed to the scene that video transmits in wireless environment by reference to the accompanying drawings; But purpose is the embodiment that is to propose a kind of adaptive video coding system of combining wireless adaptive modulation and coding.

Traditional video coding system is usually all based on communication system hierarchical structure (layering of OSI standard), relatively independent to the error-control schemes in the transfer of data between each layer in this structure, this hierarchical structure can be advantageously applied to cable network, but can not be applicable to flexibly that performance is subjected to the violent wireless mobile channel of channel influence of fading; For better adaptive channel variation, the present invention adopts " physical layer, link layer, application layer " cooperation way to realize the adaptation mechanism of video under wireless environment; By collecting the feedback information in each layer, taking appropriate measures in the coding side of wireless transmission and decoding end ensures final video reception quality.

Further, technical scheme of the present invention mainly comprises:

1. physical layer will this layer reports the application layer of coding section at Modulation and Coding Scheme (MCS) information of carrying out selecting Adaptive Modulation and Coding (AMC) back of channel quality, thereby has equaled to inform current channel conditions.

2. link layer is by the number of retransmissions N of ARQ technology with present frame _iAnd maximum retransmission N _MaxReport the application layer of coding side.

3. the information that reports according to link layer and physical layer of the application layer of coding side and send capacity utilization δ in the Buffer Pool _SendCode check R when adjusting coding _SendThereby, avoid the transmission delay that causes because of re-transmission.

4. receiving terminal is according to the capacity utilization δ that receives in the Buffer Pool _ReciveAdjust the decode rate R of video _ReciveThereby, allow video playing quality be guaranteed subjective.

1 but to the present invention is directed to the scene modeling as follows by reference to the accompanying drawings:

F, Video transmission system comprise three parts: coding side, wireless channel, decoding end.

G, physical layer are used the AMC technology, establish total N kind MCS, the different SNR intervals of respectively corresponding N kind.

H, be P at different channel conditions and the expection packet loss under the MCS _n(n=1,2 ..., N).

I, link layer adopt and block the re-transmission of ARQ technical guarantee misdata, and the greatest admissible retransmission value that defines single frame is N _Max, the expectation number of retransmissions is N ' _n

J, the Buffer Pool capacity utilization that defines coding side and decoding end respectively are δ _Send, δ _ReciveAnd according to the value of utilization rate the Buffer Pool state is divided into three kinds of states: undersaturation (0＜δ＜1/4), saturated (1/4≤δ＜3/4), supersaturation (3/4≤δ＜1).

The concrete scheme of 2 the present invention may further comprise the steps by reference to the accompanying drawings:

I, application layer are used the intermediate value SNR in the channel SNR interval of each MCS correspondence according to the AMC technical scheme that physical layer adopts _n(n=1,2 ..., N) estimate the throughput R of each scheme correspondence _n(n=1,2 ..., N) with packet loss P _n(n=1,2 ..., N).

J, physical layer report the MCS numbering n of present employing.

K, application layer are determined current R according to the MCS numbering n of current employing _nAnd P _n

L, link layer are with the current greatest admissible retransmission value N that sets by the ARQ technology _MaxReport application layer.

M, application layer are according to the packet loss P that expects _nThe N that reports with link layer _MaxCalculate the desired value of each frame number of retransmissions:

$N_n^{\&prime;}=(1-P_n^{N_{\max }+1})/(1-P_n)$

N, transmitting terminal application layer, are adjusted into transmission rate because packet retransmits the time-delay that brings in order to reduce

R′ _send＝R _n/N′ _n

O, transmitting terminal are according to the capacity utilization δ that sends in the Buffer Pool _SendSize continue to adjust final transmission rate

$R_{\mathrm{send}}=\left\{\begin{array}{cc}{\mathrm{\&gamma;}}_1{R}_{\mathrm{send}}^{\&prime;},& \mathrm{if}0<{\mathrm{\&delta;}}_{\mathrm{send}}<1/4\\ {\mathrm{\&gamma;}}_2{R}_{\mathrm{send}}^{\&prime;},& \mathrm{if}1/4\&le;{\mathrm{\&delta;}}_{\mathrm{send}}<3/4\\ {\mathrm{\&gamma;}}_3{R}_{\mathrm{send}}^{\&prime;},& \mathrm{if}3/4\&le;{\mathrm{\&delta;}}_{\mathrm{send}}<1\end{array}\right.$

γ wherein ₁, respectively the speed under the various states is adjusted parameter in the corresponding Buffer Pool, can choose flexibly according to actual environment.

P, receiving terminal are according to the capacity utilization δ that receives in the Buffer Pool _ReciveSize and the throughput valuation R of MCS correspondence _nAdjust decode rate.

$R_{\mathrm{recive}}=\left\{\begin{array}{cc}{\mathrm{\&tau;}}_1{R}_n,& \mathrm{if}0<{\mathrm{\&delta;}}_{\mathrm{recive}}<1/4\\ {\mathrm{\&tau;}}_2{R}_n,& \mathrm{if}1/4\&le;{\mathrm{\&delta;}}_{\mathrm{recive}}<3/4\\ {\mathrm{\&tau;}}_3{R}_n,& \mathrm{if}3/4\&le;{\mathrm{\&delta;}}_{\mathrm{recive}}<1\end{array}\right.$

τ wherein ₁, respectively the speed under the various states is adjusted parameter in the corresponding Buffer Pool,

Can choose flexibly according to actual environment.

Provide preferred embodiments more of the present invention below

The MCS that can select that supposes physical layer has 4 kinds, the throughput R of respectively corresponding four kinds of expectations ₁, R ₂, R ₃, R ₄With the packet loss P that estimates ₁, P ₂, P ₃, P ₄It is N that link layer adopts the greatest admissible retransmission value of blocking the ARQ choice of technology _Max=3.Send Buffer Pool and be in hypersaturated state, accept Buffer Pool and be in undersaturated condition.That next establish physical layer employing at present is the third MCS, and then the scheme execution in step of the present invention's elaboration is as follows:

A, physical layer report the MCS numbering n=3 of present employing.

B, application layer determine that according to the MCS numbering n of current employing current throughput is R ₃=1Mbps, packet loss are P ₃=0.02.

C, link layer are with the current greatest admissible retransmission value N that sets by the ARQ technology _Max=3 report application layer.

D, application layer are according to the packet loss P that expects ₃The N that reports with link layer _MaxCalculate the desired value of each frame number of retransmissions:

N′ ₃＝(1-0.02 ³⁺¹)/(1-0.02)＝1.02

E, transmitting terminal application layer, are adjusted into transmission rate because packet retransmits the time-delay that brings in order to reduce

R′ _send＝R ₃/N′ ₃＝980kbps

Transmitting terminal is according to the state (supersaturation, the i.e. 3/4≤δ that send the capacity utilization in the Buffer Pool _Send) the final transmission rate R of continuation adjustment _Send=γ ₃R ' _Send=735, get γ herein ₃=.

F, receiving terminal are according to the state (undersaturation, the i.e. 0＜δ that receive the capacity utilization in the Buffer Pool _Recive＜) and the throughput valuation R that estimates ₃Adjust decode rate R _Recive=τ ₁R _n=500, get τ herein ₁=.

Part not in the detailed description of the invention is prior art.

Claims (8)

1. the adaptive video coding system of a combining wireless adaptive modulation and coding, comprise coding side, wireless channel and decoding end, it is characterized in that: the physical layer AMC technology of coding side and link layer ARQ technology are uploaded to decoding end MCS number value via wireless channel, coding side to decoding end is obtained maximum retransmission, and the decoding end application layer is made accommodation by the adaptive video coding system.

2. the adaptive video coding system of combining wireless adaptive modulation and coding according to claim 1, it is characterized in that: wherein the physical layer of coding side will this layer reports the application layer of coding section at Modulation and Coding Scheme (MCS) information of carrying out selecting Adaptive Modulation and Coding (AMC) back of channel quality, thereby obtained current channel conditions, so that the coding section link layer is made accommodation;

Further, link layer is by the number of retransmissions N of ARQ technology with present frame _iAnd maximum retransmission N _MaxReport the application layer of coding side;

The information that the application layer of described coding side reports according to link layer and physical layer and send capacity utilization δ in the Buffer Pool _SendCode check R when adjusting coding _SendThereby, avoid retransmitting transmission delay and the channel occupancy that causes by wireless channel;

Through wireless channel to the video information of receiving terminal according to the capacity utilization δ that receives in the Buffer Pool _ReciveAdjust the decode rate R of video _ReciveThereby, video playing quality is guaranteed subjective;

But described adaptive modulation and coding is as follows at the scene modeling:

A, Video transmission system comprise three parts: coding side, wireless channel, decoding end;

B, physical layer are used the AMC technology, establish total N kind MCS, the different SNR intervals of respectively corresponding N kind;

C, be P at different channel conditions and the expection packet loss under the MCS _n(n=1,2 ..., N);

D, link layer adopt and block the re-transmission of ARQ technical guarantee misdata, and the greatest admissible retransmission value that defines single frame is N _Max, the expectation number of retransmissions is N ' _n

The Buffer Pool capacity utilization that defines coding side and decoding end respectively is δ _Send, δ _ReciveAnd according to the value of utilization rate the Buffer Pool state is divided into three kinds of states: undersaturation (0＜δ＜1/4), saturated (1/4≤δ＜3/4), supersaturation (3/4≤δ＜1).

3. the adaptive video coding system of combining wireless adaptive modulation and coding according to claim 2 is characterized in that: concrete scheme may further comprise the steps:

A, application layer are used the intermediate value SNR in the channel SNR interval of each MCS correspondence according to the AMC technical scheme that physical layer adopts _n(n=1,2 ..., N) estimate the throughput R of each scheme correspondence _n(n=1,2 ..., N) with packet loss P _n(n=1,2 ..., N);

B, physical layer report the MCS numbering n of present employing;

C, application layer are determined current R according to the MCS numbering n of current employing _nAnd P _n

D, link layer are with the current greatest admissible retransmission value N that sets by the ARQ technology _MaxReport application layer;

E, application layer are according to the packet loss P that expects _nThe N that reports with link layer _MaxCalculate the desired value of each frame number of retransmissions:

$N_n^{\&prime;}=(1-P_n^{N_{\max }+1})/(1-P_n)$

F, transmitting terminal application layer, are adjusted into transmission rate because packet retransmits the time-delay that brings in order to reduce

R′ _send＝R _n/N′ _n

G, transmitting terminal are according to the capacity utilization δ that sends in the Buffer Pool _SendSize continue to adjust final transmission rate

$R_{\mathrm{send}}=\left\{\begin{array}{cc}{\mathrm{\&gamma;}}_1{R}_{\mathrm{send}}^{\&prime;},& \mathrm{if}0<{\mathrm{\&delta;}}_{\mathrm{send}}<1/4\\ {\mathrm{\&gamma;}}_2{R}_{\mathrm{send}}^{\&prime;},& \mathrm{if}1/4\&le;{\mathrm{\&delta;}}_{\mathrm{send}}<3/4\\ {\mathrm{\&gamma;}}_3{R}_{\mathrm{send}}^{\&prime;},& \mathrm{if}3/4\&le;{\mathrm{\&delta;}}_{\mathrm{send}}<1\end{array}\right.$

γ wherein ₁, respectively the speed under the various states is adjusted parameter in the corresponding Buffer Pool, can choose flexibly according to actual environment;

H, receiving terminal are according to the capacity utilization δ that receives in the Buffer Pool _ReciveSize and the throughput valuation R of MCS correspondence _nAdjust decode rate

$R_{\mathrm{recive}}=\left\{\begin{array}{cc}{\mathrm{\&tau;}}_1{R}_n,& \mathrm{if}0<{\mathrm{\&delta;}}_{\mathrm{recive}}<1/4\\ {\mathrm{\&tau;}}_2{R}_n,& \mathrm{if}1/4\&le;{\mathrm{\&delta;}}_{\mathrm{recive}}<3/4\\ {\mathrm{\&tau;}}_3{R}_n,& \mathrm{if}3/4\&le;{\mathrm{\&delta;}}_{\mathrm{recive}}<1\end{array}\right.$

τ wherein ₁, respectively the speed under the various states is adjusted parameter in the corresponding Buffer Pool, can choose flexibly according to actual environment.

4. the adaptive video coding system of combining wireless adaptive modulation and coding according to claim 1 is characterized in that: coding side comprises inter prediction encoding, intraframe predictive coding, interweaving encoding or entropy coding.

5. the adaptive video coding system of combining wireless adaptive modulation and coding according to claim 1, it is characterized in that: radio channel state can be modeled as Gaussian channel, Rayleigh channel or Rice channel, the mode that system adopts Adaptive Modulation change at different channel conditions that modulating mode and code rate reduce since multipath fading and Doppler effect to the influence of transmission quality.

6. the adaptive video coding system of combining wireless adaptive modulation and coding according to claim 1, it is characterized in that: decoding end is travelling carriage in the mobile communication; Or terminal; Or the decode system of signal transmission pylon base station; Or set-top box; Or mobile phone terminal.

7. according to the application of the adaptive video coding system of the described combining wireless adaptive modulation and coding of the arbitrary claim of claim 1～6, it is characterized in that: the adaptive video coding system of described adaptive modulation and coding is applicable in the arbitrary standard of physical condition acceptable.

8. the application of the adaptive video coding system of combining wireless adaptive modulation and coding according to claim 7 is characterized in that: be applicable in the 3G/LTE environment; Or be applicable under the environment of wifi communication; Or the system platform of the 3G/LTE environment fusion of communicating by letter with wifi.

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