CN102316491B - Method for adjusting media code rate by utilizing mobile terminal and mobile terminal - Google Patents
Method for adjusting media code rate by utilizing mobile terminal and mobile terminal Download PDFInfo
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Abstract
The invention discloses a method for adjusting media bit rate by utilizing a mobile terminal and the mobile terminal. The method comprises the following steps: the mobile terminal detects the quality situation of a wireless network, wherein the quality situation of the wireless network at least comprises the wireless channel band width, the physical layer packet loss rate and the media packet loss rate; when the mobile terminal judges the media packet loss happens, if the wireless channel band width is greater than the media bit rate, and the physical layer packet loss exists, thus the packet loss is judged to be caused by the wireless interference, and the bit rate is not switched; and when the mobile terminal judges the media packet loss happens, if the wireless channel band width is greater than the media bit rate, and the physical layer packet loss does not exist, thus the packet loss is judged to be caused by wireless jamming, and the bit rate is switched to a lower grade. According to the invention, the quality situation of the wireless network is judged comprehensively through the wireless channel band width, the physical layer packet loss rate and the media packet loss rate, the actual network situation of the wireless network can be reflected better, thus the bit rate control is carried out according to the actual situation of the wireless network, and the better control effect is obtained.
Description
Technical field
The present invention relates to mobile flow medium technical field, relate in particular to method and mobile terminal that a kind of mobile terminal is adjusted media code rate by utilizing.
Background technology
In mobile flow medium application process, the residing network environment of terminal is always in upset condition, if server carrys out service-user with a kind of fixing stream rate, so, when network insertion bandwidth fluctuation is when lower than the speed of Media Stream, will there is a large amount of loss in media message, thereby cause the obvious decline of video quality.So mobile flow medium service generally considers to adopt intelligent stream technology.
So-called intelligent stream technology refers to, terminal is when playing stream media, and Sampling network situation in real time, according to the attribute of network actual bandwidth announcement server adjustment stream, to improve to greatest extent play quality.By intelligent streaming, play, user can receive according to the continuous content flow of specific connection speed customization.
Intelligence files in stream media can provide a plurality of stream with different bit rate codings conventionally, and each stream is conventionally corresponding to a common connection speed.When the network bandwidth changes, terminal need determine to use which bit rate stream, and this information is passed to streaming media server, and then streaming media server flows accordingly to terminal transmission.
In prior art, terminal adopts the method for media message packet loss to differentiate the network bandwidth conventionally.But this mode exists many problems in practical application, according to media message packet loss switching code rate, easily cause frequent switching and blindly switch.For example, by judgement media message packet loss, switch stream rate, just understand incision code check while often wanting media message packet loss to acquire a certain degree, media play can continue mosaic or the pause of long period.If once there being packet loss incision code check, playing process can switch frequently so, also can affect user's perception.
Summary of the invention
The technical problem that the present invention will solve is to provide a kind of method that mobile terminal is adjusted media code rate by utilizing, can obtain better media and control effect.
The invention provides a kind of mobile terminal and adjust the method for media code rate by utilizing, comprising:
The quality condition of mobile terminal detection wireless network, the quality condition of this wireless network at least comprises wireless signal-path band width, physical layer packet loss and Media Loss Ratio;
Mobile terminal carries out Rate Control according to the quality condition of wireless network;
When mobile terminal determines media packet loss, and wireless signal-path band width is higher than media code rate by utilizing, and has physical layer packet loss, is judged as the packet loss that air interference causes, not switching code rate;
When mobile terminal determines media packet loss, and wireless signal-path band width is higher than media code rate by utilizing, and without physical layer packet loss, is judged as the packet loss of radio congestion, is switched to the code check of low a grade.
According to the inventive method embodiment, also comprise step: when the quality condition of wireless network cannot meet lowest bit rate, mobile terminal suspends media services, when the quality condition of wait wireless network meets lowest bit rate, continue media services.
According to the inventive method embodiment, the step of the quality condition of above-mentioned mobile terminal judgement wireless network comprises:
The access style of determining wireless network is CDMA 1x network or EVDO network;
When the access style of wireless network is EVDO network, measure the DRC of forward traffic channel; When the access style of wireless network is CDMA 1x network, measure the forward direction SCH number of channel;
Measure the forward traffic channel PER of wireless network;
According to media message reception condition, determine Media Loss Ratio;
Mobile terminal, by DRC or SCH gain of parameter current wireless channel width, obtains the packet loss of current channel by PER.
According to the inventive method embodiment, the step that mobile terminal carries out code check switching according to the quality condition of wireless network comprises:
When channel Mean Speed is lower than Media Stream code check in mobile terminal judges the scheduled time, switch the Media Stream code check of low a grade; When channel Mean Speed is higher than Media Stream code check in mobile terminal judges the scheduled time, switch the Media Stream code check of high a grade.
According to an aspect of the present invention, by wireless signal-path band width, physical layer packet loss and Media Loss Ratio, comprehensively judge the quality condition of wireless network, the live network situation that can reflect better wireless network, thereby according to the truth of wireless network, carry out Rate Control, obtain and better control effect.
The technical problem that the present invention will solve is to provide a kind of mobile terminal, can obtain better media and control effect.
The invention provides a kind of mobile terminal, comprising: network quality detecting device, for the quality condition of detection wireless network, the quality condition of wireless network at least comprises wireless signal-path band width, physical layer packet loss and Media Loss Ratio; Media code rate by utilizing control device, for receiving the quality condition information of wireless network, carries out Rate Control according to the quality condition of wireless network.
According to mobile terminal of the present invention embodiment, network quality detecting device comprises:
Channel width determining unit, for measuring the DRC of forward traffic channel or measuring the forward direction SCH number of channel, obtains current wireless channel width according to DRC or SCH, and current wireless channel width is sent to media code rate by utilizing control device;
Physical layer packet loss determining unit, for measuring the forward traffic channel PER of wireless network, obtains the physical layer packet loss of current channel according to PER, the physical layer packet loss of current channel is sent to media code rate by utilizing control device;
Media Loss Ratio determining unit, determines Media Loss Ratio for the reception condition according to media message, and Media Loss Ratio is sent to media code rate by utilizing control device.
According to mobile terminal of the present invention embodiment, channel width determining unit is also for determining that the access style of wireless network is CDMA 1x network or EVDO network; When the access style of wireless network is EVDO network, measure the DRC of forward traffic channel, according to DRC, obtain current wireless channel width; When the access style of wireless network is CDMA 1x network, measure the forward direction SCH number of channel, SCH obtains current wireless channel width.
According to mobile terminal of the present invention embodiment, when wireless channel Mean Speed is lower than Media Stream code check in media code rate by utilizing control device judges the scheduled time, switch the Media Stream code check of low a grade; When channel Mean Speed is higher than Media Stream code check in mobile terminal judges the scheduled time, switch the Media Stream code check of high a grade; And/or when media code rate by utilizing control device determines media packet loss, and wireless signal-path band width is higher than media code rate by utilizing, and have physical layer packet loss, be judged as the packet loss that air interference causes, not switching code rate; And/or when media code rate by utilizing control device determines media packet loss, and wireless signal-path band width is higher than media code rate by utilizing, and without physical layer packet loss, be judged as the packet loss of radio congestion, be switched to the code check of low a grade, be switched to again within a certain period of time the code check of high a grade.
According to an aspect of the present invention, network quality detecting device is determined wireless signal-path band width, physical layer packet loss and Media Loss Ratio, media code rate by utilizing control device comprehensively judges the quality condition of wireless network by wireless signal-path band width, physical layer packet loss and Media Loss Ratio, the live network situation that can reflect better wireless network, thereby according to the truth of wireless network, carry out Rate Control, obtain and better control effect.
Accompanying drawing explanation
Fig. 1 illustrates the flow chart of an embodiment that mobile terminal of the present invention is adjusted the method for media code rate by utilizing;
Fig. 2 illustrates the flow chart of another embodiment that mobile terminal of the present invention is adjusted the method for media code rate by utilizing;
Fig. 3 illustrates the block diagram of an embodiment of mobile terminal of the present invention;
Fig. 4 illustrates the block diagram of another embodiment of mobile terminal of the present invention.
Embodiment
With reference to the accompanying drawings the present invention is described more fully, exemplary embodiment of the present invention is wherein described.
In prior art, with media message packet loss, judge the network bandwidth, there is limitation, but how in conjunction with other parameters, to judge the network bandwidth, need to carry out creative thinking and work.Present inventor is by studying above-mentioned technical problem, the quality condition that discovery can comprehensive wireless channel width, physical layer packet loss and Media Loss Ratio judge wireless network, and carry out Rate Control and switching according to the quality condition of wireless network, can obtain better control effect and user awareness.
According to one embodiment of present invention, by the quality condition of terminal judges wireless network, comprehensive wireless channel width, physical layer packet loss and Media Loss Ratio, meeting under certain condition, incision code check or on cut code check, guarantee that user is few influenced to the perception of streaming media service.In addition, when network quality cannot meet lowest bit rate, terminal can point out user network that normal service cannot be provided in time, and service suspends, and waits for after network quality takes a turn for the better and continues service.
Fig. 1 illustrates the flow chart of an embodiment that mobile terminal of the present invention is adjusted the method for media code rate by utilizing.
As shown in Figure 1, in step 102, the quality condition of mobile terminal detection wireless network, the quality condition of wireless network at least comprises wireless signal-path band width, physical layer packet loss and Media Loss Ratio.
In step 104, mobile terminal, according to the quality condition of wireless network, as wireless signal-path band width, physical layer packet loss and Media Loss Ratio, carries out Rate Control.When mobile terminal determines media packet loss, if wireless signal-path band width, higher than media code rate by utilizing, and has physical layer packet loss, be judged as the packet loss that air interference causes, not switching code rate; When mobile terminal determines media packet loss, if wireless signal-path band width, higher than media code rate by utilizing, and without physical layer packet loss, is judged as the packet loss of radio congestion, be switched to the code check of low a grade.For example, if judgement wireless network bandwidth declines, network congestion causes media packet loss, switching code rate, if judgement is because the error code that network interferences causes causes media packet loss, does not need switching code rate.When in mobile terminal judges the scheduled time, channel Mean Speed is lower than media lowest stream code check, out of service, after recovering, wireless signal-path band width continues again to provide service.
In the above-described embodiments, by wireless signal-path band width, physical layer packet loss and Media Loss Ratio, comprehensively judge the quality condition of wireless network, the live network situation that can reflect better wireless network, thereby according to the truth of wireless network, carry out Rate Control, obtain and better control effect.
According to one embodiment of present invention, mobile terminal media play application software in playing process, the quality condition of detection wireless network constantly.Concrete steps comprise: the access style of judgement current network: CDMA (Code Division Multiple Access, code division multiple access) 1x or EVDO (Evolution Data Only/Evolution Data Optimized, evolution data optimized); The DRC (Data RateControl, speed is controlled) that measures forward traffic channel when for EVDO network measures forward direction SCH (Supplemental Channel, the complement channel) number of channel when for CDMA 1x network; Measure forward traffic channel PER (Packet Error Rate, Packet Error Ratio).Terminal application software, by DRC or SCH gain of parameter current wireless channel width, is converted into current channel physical layer packet loss by PER.The frequency of detection wireless network quality can be according to the performance adjustment of terminal, and detection is more intensive conventionally, and accuracy is higher.General terminal all provides API (the ApplicationProgramming Interface of physical layer parameter, application programming interface), application software can be obtained relevant physical parameter by API, and parameter comprises: network type, the SCH number of channel, DRC speed and PER etc.This embodiment obtains DRC or SCH, PER parameter for cdma network, thereby obtains the accurate situation of cdma wireless network quality.
Fig. 2 illustrates the flow chart of another embodiment that moving terminal of the present invention is adjusted the method for media code rate by utilizing.
As shown in Figure 2, in step 202, when newly opening Media Stream, mobile terminal first judges current network rate, to the applicable code check of server request;
In step 204, obtain current channel packet loss, current channel Mean Speed and Media Loss Ratio.
In step 206, for example, within the mobile terminal judgement scheduled time (1 second), channel Mean Speed during lower than Media Stream code check, is switched the Media Stream code check of low a grade at once;
In step 208, for example, within the mobile terminal judgement scheduled time (1 second), channel Mean Speed during higher than Media Stream code check, is switched the Media Stream code check of high a grade at once;
In step 210, when mobile terminal determines media packet loss, and wireless signal-path band width is higher than media code rate by utilizing, and has physical layer packet loss, is judged as the packet loss that air interference causes, not switching code rate;
In step 212, when mobile terminal determines media packet loss, and wireless signal-path band width is higher than media code rate by utilizing, and without physical layer packet loss, is judged as the packet loss of radio congestion, switches to the code check of low a grade, is switched within a certain period of time the code check of high a grade again;
In step 214, for example, within the mobile terminal judgement scheduled time (1 second), channel Mean Speed is during lower than media lowest stream code check, out of service, and points out user, after wireless signal-path band width recovers, continues to provide service.
Wireless network is different from cable network, and the factor that the packet loss of wireless network is often disturbed is many, and packet loss is not necessarily caused by bandwidth deficiency.Media message packet loss can not judge the lifting of the network bandwidth, and when network is no longer during packet loss, terminal cannot effectively judge the situation of current network, if be blindly switched to high code check, may again cause packet loss.When network quality drops to lowest bit rate, terminal can be ended service, but after network quality takes a turn for the better, can not effectively judge the service of restarting.In the above-described embodiments, when wireless signal-path band width promotes, can will on code check, cut in time, take full advantage of Internet resources, promote the perception of user to business; When network quality cannot provide service, can be out of service in time, and after network quality takes a turn for the better, can continue in time to provide service; Network congestion and signal cover the poor media packet loss causing, and have adopted different switchover policy, do not affect as much as possible media play quality.By the technical scheme of the above embodiment of the present invention, code check incision is more accurate and timely, reduces the possibility of judgement time and erroneous judgement.For media packet loss, be not particularly the caused situation of the network bandwidth, carry out correct processing, promoted user awareness.
Fig. 3 illustrates the block diagram of an embodiment of mobile terminal of the present invention.As shown in Figure 3, this embodiment comprises network quality detecting device 31 and media code rate by utilizing control device 32.Wherein, network quality detecting device 31 is for the quality condition of detection wireless network, and the quality condition of wireless network at least comprises wireless signal-path band width, physical layer packet loss and Media Loss Ratio; Media code rate by utilizing control device 32, for receiving the quality condition information of wireless network, carries out Rate Control according to the quality condition of wireless network.According to mobile terminal of the present invention embodiment, when media code rate by utilizing control device 32 also cannot meet lowest bit rate for the quality condition when wireless network, suspend media services, when the quality condition of wait wireless network meets lowest bit rate, continue media services.When media code rate by utilizing control device 52 judges that in the scheduled times, wireless channel Mean Speed is lower than Media Stream code check, switch the Media Stream code check of low a grade; When media code rate by utilizing control device 52 judges that in the scheduled times, channel Mean Speed is higher than Media Stream code check, switch the Media Stream code check of high a grade.
In the above-described embodiments, mobile terminal comprehensively judges the quality condition of wireless network by wireless signal-path band width, physical layer packet loss and Media Loss Ratio, the live network situation that can reflect better wireless network, thereby according to the truth of wireless network, carry out Rate Control, obtain and better control effect.
According to mobile terminal of the present invention embodiment, when media code rate by utilizing control device determines media packet loss, and wireless signal-path band width higher than media code rate by utilizing, have physical layer packet loss, be judged as the packet loss that air interference causes, not switching code rate; When media code rate by utilizing control device determines media packet loss, and wireless signal-path band width is higher than media code rate by utilizing, without physical layer packet loss, is judged as the packet loss of radio congestion, is switched to the code check of low a grade, is switched within a certain period of time the code check of high a grade again.
In the above-described embodiments, when wireless signal-path band width promotes, media code rate by utilizing control device can will be cut on code check in time, takes full advantage of Internet resources, promotes the perception of user to business; When network quality cannot provide service, media code rate by utilizing control device can be out of service in time, and after network quality takes a turn for the better, can continue in time to provide service; Network congestion and signal cover the poor media packet loss causing, and have adopted different switchover policy, do not affect as much as possible media play quality.By the technical scheme of the above embodiment of the present invention, code check incision is more accurate and timely, reduces the possibility of judgement time and erroneous judgement.For media packet loss, be not particularly the caused situation of the network bandwidth, carry out correct processing.
Fig. 4 illustrates the block diagram of another embodiment of mobile terminal of the present invention.As shown in Figure 4, this embodiment comprises network quality detecting device 41 and media code rate by utilizing control device 32.Wherein, network quality detecting device 41 comprises: channel width determining unit 411, for measuring the DRC of forward traffic channel or measuring the forward direction SCH number of channel, according to DRC or SCH, obtain current wireless channel width, current wireless channel width is dealt into media code rate by utilizing control device 32; Physical layer packet loss determining unit 412, for measuring the forward traffic channel PER of wireless network, obtains the physical layer packet loss of current channel according to PER, the physical layer packet loss of current channel is sent to media code rate by utilizing control device 32; Media Loss Ratio determining unit 413, determines Media Loss Ratio for the reception condition according to media message, and Media Loss Ratio is sent to media code rate by utilizing control device 32.According to one embodiment of present invention, channel width determining unit 411 is also for determining that the access style of wireless network is CDMA 1x network or EVDO network; When the access style of wireless network is EVDO network, measure the DRC of forward traffic channel, according to DRC, obtain current wireless channel width; When the access style of wireless network is CDMA 1x network, measure the forward direction SCH number of channel, SCH obtains current wireless channel width
According to an application examples of the present invention, media play application software comprises media code rate by utilizing control device, and this media code rate by utilizing control device receives input: Media Loss Ratio, network type, the SCH number of channel, DRC speed and PER etc.; According to initial conditions, judge, bit rate output is controlled result: maintain code check, incision code check, on cut code check, out of service and Resume service etc.Specific implementation is referring to embodiment above, and in addition, this media play application software need to have an initialized process, needs the code check type of the current Streaming Media of input.
Part embodiment of the present invention is applicable to specific media play application software.Conventionally the video playback based on wap cannot detect wireless quality condition, has in the future the streaming media service of quality assurance, need to initiate to eating dishes without rice or wine QoS (service quality) application, and media play based on wap also cannot be initiated to eating dishes without rice or wine QoS application.Therefore,, for there being the video jukebox software of quality assurance to customize, realize technical scheme of the present invention.By customization, with the player of client, can realize this function, thereby the video playback based on wap also can realize technical scheme of the present invention.
It will be understood by those of skill in the art that unit or device in above-described embodiment can, by software, hardware or software and hardware in conjunction with realizing, all belong to the scope of protection of the invention.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can complete by the relevant hardware of program command, aforesaid program can be stored in a computer read/write memory medium, this program, when carrying out, is carried out the step that comprises said method embodiment; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CDs.
Description of the invention provides for example with for the purpose of describing, and is not exhaustively or limit the invention to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Selecting and describing embodiment is for better explanation principle of the present invention and practical application, thereby and makes those of ordinary skill in the art can understand the various embodiment with various modifications that the present invention's design is suitable for special-purpose.
Claims (8)
1. mobile terminal is adjusted a method for media code rate by utilizing, it is characterized in that, comprising:
The quality condition of described mobile terminal detection wireless network, the quality condition of described wireless network at least comprises wireless signal-path band width, physical layer packet loss and Media Loss Ratio;
Described mobile terminal carries out Rate Control according to the quality condition of described wireless network; When described mobile terminal determines media packet loss, if wireless signal-path band width, higher than media code rate by utilizing, and has physical layer packet loss, be judged as the packet loss that air interference causes, not switching code rate;
When described mobile terminal determines media packet loss, if wireless signal-path band width, higher than media code rate by utilizing, and without physical layer packet loss, is judged as the packet loss of radio congestion, be switched to the code check of low a grade;
The step of the quality condition of described mobile terminal judgement wireless network comprises:
The access style of determining wireless network is CDMA1x network or EVDO network;
When the access style of wireless network is EVDO network, measures the speed of forward traffic channel and control DRC; When the access style of wireless network is CDMA1x network, measure the forward complement channel SCH number of channel;
Measure the forward traffic channel Packet Error Ratio PER of wireless network;
According to media message reception condition, determine Media Loss Ratio;
Described mobile terminal, by DRC or SCH gain of parameter current wireless channel width, obtains the packet loss of current channel by PER.
2. mobile terminal according to claim 1 is adjusted the method for media code rate by utilizing, it is characterized in that, when being judged as the packet loss of radio congestion, is switched to after the code check of low a grade, is switched within a certain period of time the code check of high a grade again.
3. mobile terminal is adjusted the method for media code rate by utilizing according to claim 1, it is characterized in that, also comprises:
When the quality condition of wireless network cannot meet lowest bit rate, described mobile terminal suspends media services, when the quality condition of waiting for described wireless network meets lowest bit rate, continues media services.
4. mobile terminal according to claim 1 is adjusted the method for media code rate by utilizing, it is characterized in that, the step that described mobile terminal carries out code check switching according to the quality condition of described wireless network comprises:
When channel Mean Speed is lower than Media Stream code check in described mobile terminal judges the scheduled time, switch the Media Stream code check of low a grade; When channel Mean Speed is higher than Media Stream code check in described mobile terminal judges the scheduled time, switch the Media Stream code check of high a grade.
5. a mobile terminal, is characterized in that, comprising:
Network quality detecting device, for the quality condition of detection wireless network, the quality condition of described wireless network at least comprises wireless signal-path band width, physical layer packet loss and Media Loss Ratio;
Media code rate by utilizing control device, for receiving the quality condition information of described wireless network, carries out Rate Control according to the quality condition of described wireless network;
Described network quality detecting device comprises:
Channel width determining unit, for measuring the speed of forward traffic channel, control DRC or measure the forward complement channel SCH number of channel, according to described DRC or SCH, obtain current wireless channel width, described current wireless channel width is sent to described media code rate by utilizing control device;
Physical layer packet loss determining unit, for measuring the Packet Error Ratio PER of the forward traffic channel of wireless network, obtains the physical layer packet loss of current channel according to described PER, the physical layer packet loss of described current channel is sent to described media code rate by utilizing control device;
Media Loss Ratio determining unit, determines Media Loss Ratio for the reception condition according to media message, and described Media Loss Ratio is sent to described media code rate by utilizing control device.
6. mobile terminal according to claim 5, is characterized in that, described channel width determining unit is also for determining that the access style of wireless network is CDMA1x network or EVDO network; When the access style of wireless network is EVDO network, measure the DRC of forward traffic channel, according to described DRC, obtain current wireless channel width; When the access style of wireless network is CDMA1x network, measure the forward direction SCH number of channel, described SCH obtains current wireless channel width.
7. mobile terminal according to claim 5, it is characterized in that, when described media code rate by utilizing control device also cannot meet lowest bit rate for the quality condition when wireless network, suspend media services, when the quality condition of waiting for described wireless network meets lowest bit rate, continue media services.
8. mobile terminal according to claim 5, is characterized in that,
When wireless channel Mean Speed is lower than Media Stream code check in described media code rate by utilizing control device judges the scheduled time, switch the Media Stream code check of low a grade; When channel Mean Speed is higher than Media Stream code check in described media code rate by utilizing control device judges the scheduled time, switch the Media Stream code check of high a grade;
And/or
When described media code rate by utilizing control device determines media packet loss, and wireless signal-path band width is higher than media code rate by utilizing, and has physical layer packet loss, is judged as the packet loss that air interference causes, not switching code rate;
And/or
When described media code rate by utilizing control device determines media packet loss, and wireless signal-path band width is higher than media code rate by utilizing, and without physical layer packet loss, is judged as the packet loss of radio congestion, is switched to the code check of low a grade, is switched within a certain period of time the code check of high a grade again.
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| CN102665235B (en) * | 2012-05-11 | 2015-01-07 | 深圳市共进电子股份有限公司 | Method for automatically identifying number and power of antennas in hotspot AP (access point) |
| CN103945244B (en) * | 2013-01-17 | 2018-05-29 | 华为技术有限公司 | The method and apparatus for controlling video traffic transmission |
| CN107404742A (en) * | 2016-05-18 | 2017-11-28 | 阿基米德（上海）传媒有限公司 | A kind of method that audio quality is dynamically adjusted under mobile network |
| CN106210929B (en) * | 2016-07-13 | 2019-06-25 | 诚迈科技（南京）股份有限公司 | Network flow download terminal and optimization method based on HLS client |
| CN107968944B (en) * | 2017-12-04 | 2020-01-17 | 深圳市瑞科慧联科技有限公司 | Image transmission method and system |
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