CN110169134A - The detection method and device of wireless quality support video tastes - Google Patents
The detection method and device of wireless quality support video tastes Download PDFInfo
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- CN110169134A CN110169134A CN201780083172.1A CN201780083172A CN110169134A CN 110169134 A CN110169134 A CN 110169134A CN 201780083172 A CN201780083172 A CN 201780083172A CN 110169134 A CN110169134 A CN 110169134A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
- H04W40/12—Communication route or path selection, e.g. power-based or shortest path routing based on transmission quality or channel quality
Abstract
This application provides the detection method and device that a kind of wireless quality supports video tastes, it include the first radio interface rate ability and the first wireless side round-trip delay RAN RTT that data are transmitted between base station and user equipment (UE) in the network information the described method includes: obtaining the network information of radio node in network；The first initial buffer time delay that the base station is supported, and the first Caton duration accounting that the base station according to the first radio interface rate capacity calculation is supported are calculated according to the first radio interface rate ability and the first RAN RTT；Determine that the base station radio is eated dishes without rice or wine the first video tastes point supported using the first initial buffer time delay, the first Caton duration accounting and designated source quality, judge whether first video tastes point are less than predetermined target value, if it is less than the predetermined target value, it is determined that the base station cannot be met the requirements to the wireless quality between UE.
Description
This application involves the detection method and device that video tastes are supported in user video experience field more particularly to a kind of wireless quality.
Video tastes be worth point be user network video is experienced and score made, be the measurement index that network operator is used to evaluate network video quality, thus raising video quality divided with to increase the video tastes of user be operator main purpose.
Existing mobile video network system, as shown in Figure 1, the system includes user equipment (user equipment, UE), base station (base station), interchanger, application service (over the top, OTT) the equipment such as server, transmission network, core net (mobility management entity, MME), bearer network.User is by base station, interchanger, core network to OTT server, OTT server is allocated and disposes to the video download rate further according to the bandwidth situation of mobile video network system by clicking video source to be browsed.
Generally, in mobile video network system, since base station is when transmitting video to UE, UE obtains the downloading rate of the base station, that is the size of radio interface rate is that an important link of efficiency of transmission is influenced in network system, is to guarantee that user video experiences good necessary condition, therefore, it needs to support video tastes to assess to the wireless quality between UE base station, and guides operator to be based on target video experience and carry out wireless quality planning.
But, the existing appraisal procedure to network side video tastes, the method that probe carries out intermediate packet capturing or server analysis is disposed usually at network node, it analyzes and that assess is end-to-end (the end to end of video, E2E it) experiences, such as the video tastes from UE to server, so the video tastes that UE is supported to wireless quality between base station cannot be represented, and then it cannot precisely instruct wireless network planning.
Summary of the invention
This application provides the detection methods that a kind of wireless quality supports video tastes, support video tastes assessment and planning based on wireless quality to realize.To solve this technical problem, this application discloses following technical solutions:
In a first aspect, this application provides the detection methods that a kind of wireless quality supports video tastes, which comprises
Computer or software obtain the network information of radio node in network, radio node in the network includes base station, user equipment (UE) and server etc., it include the first radio interface rate ability and the first wireless side round-trip delay RAN RTT that data are transmitted between base station and UE in the network information, wherein, the RAN RTT is UE to base station
Round-trip delay；The first initial buffer time delay that the base station is supported, and the first Caton duration accounting that the base station according to the first radio interface rate capacity calculation is supported are calculated according to the first radio interface rate ability and the first RAN RTT；Determine that the base station radio is eated dishes without rice or wine the first video tastes point supported using the first initial buffer time delay, the first Caton duration accounting and designated source quality；Judge whether first video tastes point are less than predetermined target value, if it is less than the predetermined target value, it is determined that the base station cannot be met the requirements to the wireless quality between UE.
Using this implementation, by obtaining radio interface rate ability and wireless side round-trip delay between base station and user equipment, and the video tastes that the radio open of base station is supported are determined using the two parameters, represent the video tastes that the wireless quality between base station and user equipment can be supported, find bottleneck existing for radio open, and wireless network planning is accurately instructed according to radio open pipeline ability, guarantee that wireless quality supports the optimum efficiency of video tastes.
With reference to first aspect, in the first realization of first aspect, obtaining the first radio interface rate ability in the network information includes: the first radio interface rate ability for obtaining the base station and supporting, the radio interface rate ability is at least one UE that the base station covers, and average each UE transmits the peak transfer rate obtained when data.Since radio interface rate ability represents the maximum rate that wireless quality can be supported, so wireless pipeline transmittability can be fully demonstrated.
With reference to first aspect, in realizing at second of first aspect, in the three-way handshake of Transmission Control Protocol, the first RAN RTT can be obtained in the following way, firstly, obtaining the first moment that the server in the network is sent to the negotiated packet SYNACK of the UE；Then, then the UE is received to the server feedback SYNACKACK after the SYNACK, at the time of computer obtains the UE feedback SYNACKACK, is set as the second moment；Finally, calculating the first RAN RTT according to the time interval between the second moment and the second moment.
It in this implementation, can accurately reflect loopback delay under existing network environment by obtaining the first RAN RTT between base station and UE, can be used to accurately calculate the video tastes point that radio open is supported.
With reference to first aspect, in the third realization of first aspect, the step of computer calculates the first initial buffer time delay base station supported by the first radio interface rate ability and the first RAN RTT, is specifically included: a video source specified first；Video source parameter is obtained according to the designated source, the video source parameter includes video resolution and video code rate；Then, the data flow needed using the initial buffer of the video source parameter and the video source, establish initial buffer model, the initial buffer model is for calculating the first initial buffer time delay, specifically, the first radio interface rate ability, the first RAN RTT can be updated to the initial buffer model, calculate the first initial buffer time delay.
In this implementation, video source parameter, video resolution and video code rate are determined by designated source, guarantee that the non-video quality influence factor eated dishes without rice or wine is constant, to realize the testing and evaluation of the wireless quality based on radio interface rate ability and RAN RTT.
With reference to first aspect, the 4th kind of first aspect realize in, computer base station according to the first radio interface rate capacity calculation support Caton duration accounting the step of specifically include: firstly, obtain designated source；According to the available video source parameter in the designated source, such as video resolution and video code rate；Then, the video is utilized
The process in the video playing stage of source parameter and the video source establishes the Caton duration accounting model that the base station is supported；Finally, the parameters such as the first radio interface rate ability, which are substituted into the Caton duration accounting model, is calculated the first Caton duration accounting.
In this implementation, video source parameter, video resolution and video code rate are determined by designated source, guarantee that the non-video quality influence factor eated dishes without rice or wine is constant, to realize the testing and evaluation of the wireless quality based on radio interface rate ability and RAN RTT.
With reference to first aspect or first aspect the first to any one in the 4th kind, in being realized at the 5th kind of first aspect, if detecting the video tastes point is less than the predetermined target value, then show that the wireless quality between base station and UE cannot support the optimum experience of user video, it needs to plan RAN RTT and radio interface rate ability again, concrete implementation mode includes the following steps: first, pass through the method that big data models and the Massive Sample that existing net has occurred and that, based on the big data theories of learning, establish the function model of the Key Performance Indicator KPI in RAN RTT and network foundation；Then, network KPI information is obtained after simulant design, the network KPI information includes the second radio interface rate ability, number of users, the load etc. after planning, finally, network KPI information and the second radio interface rate ability are updated to the 2nd RAN RTT after planning is calculated in the KPI function model.
In this implementation, the 2nd RAN RTT after planning can be accurately predicted by establishing KPI function model, so as to the video tastes point supported according to wireless quality after the 2nd RAN RTT Accurate Prediction networking.
5th kind of realization with reference to first aspect, in being realized at the 6th kind of first aspect, after RAN RTT and radio interface rate ability after obtaining planning, it needs further to judge whether the wireless quality after planning meets target call, specifically detection method includes the following steps: first, the second initial buffer time delay that the base station is supported is calculated according to the second radio interface rate ability after planning and the RAN RTT after the planning, and the second Caton duration accounting, wherein, it can use the initial buffer model and Caton duration accounting model the second initial buffer time delay of acquisition and the second Caton duration accounting that above-mentioned first aspect is established；Then, the second video tastes point of the base station support after planning are determined using the second initial buffer time delay, the second Caton duration accounting and designated source quality；Judge whether second video tastes point are greater than or equal to predetermined target value, if the second video tastes point are greater than or equal to the predetermined target value, the base station after the planning and the wireless quality between UE are met the requirements；Otherwise, it is unsatisfactory for requiring, then until needing to plan that the video tastes of RAN RTT and radio interface rate ability after planning again point reach the predetermined target value again.
The method that present aspect provides realizes the assessment that wireless quality can support best video to experience, wireless quality is found out to eat dishes without rice or wine existing bottleneck, the video tastes of user are accurately assessed, guidance operator carries out the network planning, solves the problems, such as wireless network to realize with most reasonable programme.
Second aspect, present invention also provides the detection devices that a kind of wireless quality supports video tastes, described device includes: acquiring unit, it include the first radio interface rate ability and the first wireless side round-trip delay RAN RTT that data are transmitted between base station and user equipment (UE) in the network information for obtaining the network information of radio node in network；Processing unit, for calculating the first initial buffer time delay that the base station is supported, and the first Caton duration accounting that the base station according to the first radio interface rate capacity calculation is supported according to the first radio interface rate ability and the first RAN RTT；The processing unit is also used to using the first initial buffer time delay, the first Caton duration accounting and refers to
Determine video source quality and determines that the base station radio is eated dishes without rice or wine the first video tastes point supported；The processing unit, is also used to judge whether first video tastes point are less than predetermined target value, if it is less than the predetermined target value, it is determined that the base station cannot be met the requirements to the wireless quality between UE.
Furthermore, described device further includes storage unit, data for storing its acquisition and generating, including the first radio interface rate ability, the first RAN RTT, the first initial buffer time delay, the first Caton duration accounting, designated source quality, the first video tastes are divided and the data such as predetermined target value.
In conjunction with second aspect, in the first realization of second aspect, the acquiring unit, the first radio interface rate ability supported for obtaining the base station, the radio interface rate ability is at least one UE that the base station covers, and average each UE transmits the peak transfer rate obtained when data.
In conjunction with second aspect, in being realized at second of second aspect, the acquiring unit, it is also used in the three-way handshake of Transmission Control Protocol, record the first moment that the server in the network is sent to the UE negotiated packet SYNACK, record the second moment that the UE is sent to the server S YNACKACK, wherein, second moment refers to that UE is receiving the rear to server feedback of the SYNACK of server transmission, then, the UE is calculated to the first RAN RTT between the base station according to first moment and second moment.
In conjunction with second aspect, in the third realization of second aspect, the processing unit, it is also used to that designated source can be obtained by the acquiring unit, video source parameter is obtained according to the designated source, the video source parameter includes video resolution and video code rate, and the data flow needed using the initial buffer of the video source parameter and the video source establishes initial buffer model；First radio interface rate and the first RAN RTT are updated to the initial buffer model, the first initial buffer time delay is calculated.
In conjunction with second aspect, in the 4th kind of second aspect realization, the processing unit is also used to obtain designated source；Video source parameter is obtained according to the designated source, and the video source parameter includes that video resolution and video code rate using the process in the video playing stage of the video source parameter and the video source establish the Caton duration accounting model that the base station is supported；First radio interface rate is updated to the Caton duration accounting model, the first Caton duration accounting is calculated.
In conjunction with second aspect or second aspect the first to any one in the 4th kind, in being realized at the 5th kind of second aspect, the processing unit, if being also used to detect the video tastes point is less than the predetermined target value, the function model of the Key Performance Indicator KPI of the first RAN RTT and the network is established；Network KPI information is obtained after simulant design, the network KPI information includes the second radio interface rate ability；The 2nd RAN RTT after planning is calculated using network KPI information and the second radio interface rate ability and the function model.
It is realized in conjunction with the 5th kind of second aspect, in being realized at the 6th kind of second aspect, the processing unit is also used to calculate the second initial buffer time delay and the second Caton duration accounting that the base station is supported according to the RAN RTT after the second radio interface rate ability and the planning；The second video tastes point of the base station support after planning are determined using the second initial buffer time delay, the second Caton duration accounting and designated source quality；If second video tastes point are greater than or equal to the predetermined target value, the base station after the planning and wireless between UE
Quality is met the requirements.If second video tastes point are less than predetermined target value, optimal video tastes effect is still not satisfied, needs to plan the wireless quality between base station and UE again.
The third aspect, present invention also provides a kind of network equipments, the detection device of video tastes is supported including wireless quality described in the various implementations of above-mentioned second aspect, specifically, the network equipment includes: transceiver, processor and memory, the processor can execute the program or instruction stored in the memory, to realize the detection method for supporting video tastes with wireless quality described in the various implementations of first aspect.
Fourth aspect, present invention also provides a kind of storage medium, which can be stored with program, the program execute when can realize including wireless quality provided by the present application support video tastes each embodiment of detection method in some or all of step.
Detection method provided by the present application is compared with traditional E2E video quality evaluation method, consider radio interface rate ability and RAN RTT between base station and user equipment, the non-video quality influence factor eated dishes without rice or wine is isolated, have cured the non-influence factor of eating dishes without rice or wine such as resolution ratio, code rate, RAN or more RTT and initial buffering data amount, so as to accurately judge video quality lower than predetermined target value whether wireless quality causes the reason of.Cause if not by wireless quality, then needs to solve the problems, such as non-wireless network；The reason of if it is being caused by wireless quality, is then planned and is handled to wireless quality.
In order to illustrate more clearly of the technical solution of the application, the drawings to be used in the embodiments are briefly described below, it should be apparent that, for those of ordinary skills, without any creative labor, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of schematic diagram of E2E network structure provided by the embodiments of the present application；
Fig. 2 is the schematic diagram that each node of a kind of network provided by the embodiments of the present application influences video quality factors；
Fig. 3 is the flow chart for the detection method that a kind of wireless quality provided by the embodiments of the present application supports video tastes；
Fig. 4 is a kind of flow diagram for obtaining radio interface rate ability provided by the embodiments of the present application；
Fig. 5 is a kind of flow diagram of Transmission Control Protocol three-way handshake provided by the embodiments of the present application；
Fig. 6 is a kind of schematic diagram of video playing process provided by the embodiments of the present application；
Fig. 7 is the schematic diagram in initial download stage after a kind of TCP provided by the embodiments of the present application is established；
Fig. 8 is a kind of schematic diagram of video initial buffering data downloading provided by the embodiments of the present application；
Fig. 9 is a kind of flow diagram that wireless quality is planned provided by the embodiments of the present application；
Figure 10 is the schematic diagram for the detection device that a kind of wireless quality provided by the embodiments of the present application supports video tastes；
Figure 11 is a kind of structural schematic diagram of the network equipment provided by the embodiments of the present application；
Figure 12 is a kind of relation schematic diagram of the video tastes point provided by the embodiments of the present application with resolution ratio.
For convenience of subsequent descriptions and clearly the application is illustrated, the concept that may be used to the application first below is described briefly:
Whether the application meets the video tastes requirement of operator in order to assess base station to the wireless quality between UE, video tastes can be obtained under wireless quality by proposing a kind of assessment wireless access subscriber, and according to the video tastes target of operator, instruct the scheme of wireless network planning, the program includes: specified network exemplary video source, under the premise of guaranteeing transmission network or server is not bottleneck, the video tastes that wireless network is supported, and the network planning is carried out based on the video tastes currently wirelessly supported, and quality of wireless network supports video tastes after simulating planning.
Wherein, the wireless quality supports video tastes it is to be understood that specifying a certain exemplary video, guarantees transmission or under the premise of server is not bottleneck, the best video experience that can be supported based on wireless quality under current network framework.
Referring to fig. 2, in the network evaluation planning for supporting best video experience to wireless quality, generally, the principal element for influencing video tastes includes video source quality, video buffer time delay, plays factors such as Caton (sStalling).Further, the parameter for influencing these principal elements includes: resolution ratio, code rate, the playable duration of initial buffer, radio interface rate ability (wireless speed capability), wireless side round-trip delay (Radio Access Network Round-Trip Time, RAN RTT) and RAN or more RTT etc..Wherein, the parameter for the principal element that video quality can influence video tastes of eating dishes without rice or wine between base station and UE only includes radio interface rate and RAN RTT, remaining parameter (such as resolution ratio, code rate, RAN or more RTT and initial buffer can play duration) can be summarized as non-video quality influence factor of eating dishes without rice or wine.
Method provided in this embodiment, the non-video quality influence factor eated dishes without rice or wine is isolated, solidifies non-factor of eating dishes without rice or wine (resolution ratio, code rate, RAN or more RTT and initial buffering data amount), detect whether the reason of video quality is lower than target value is to be caused by the wireless quality between base station and UE.Cause if not wireless quality, then needs to solve the problems, such as non-wireless network；Cause if it is wireless quality, then planning is optimized to wireless quality.
It is a kind of flow chart of wireless quality detection method provided in this embodiment, this method comprises the following steps referring to Fig. 3:
Step 301: the network equipment obtains the network information of radio node in network, includes the first radio interface rate ability and the first wireless side round-trip delay RAN RTT that data are transmitted between base station and user equipment (UE) in the network information.
Step 302: the first initial buffer time delay that the base station is supported, and the first Caton duration accounting that the base station according to the first radio interface rate capacity calculation is supported are calculated according to the first radio interface rate ability and the first RAN RTT.
Step 303: determining that the base station radio is eated dishes without rice or wine the first video tastes point supported using the first initial buffer time delay, the first Caton duration accounting and designated source quality.
Step 304: judging whether first video tastes point are less than predetermined target value, if it is less than the predetermined target value, it is determined that the base station cannot be met the requirements to the wireless quality between UE, need to plan；If it is greater than or equal to the predetermined target value, then show that wireless quality is met the requirements, without planning.
Specifically, in step 301, in the network information further include: resolution ratio, code rate, initial buffer can play the parameters such as duration and RAN or more RTT.The radio interface rate ability refers to that at least one UE of base station covering, average each UE transmits the peak transfer rate obtained when data.
Optionally, as shown in Figure 4, the radio interface rate ability that the network equipment obtains UE includes: that base station obtains the measurement report that UE is reported, it include the parameters such as base station covering quality channel quality indicator (CQI) and RANK value in the measurement report, the schedulable data of each RB are calculated according to agreement TBS INDEX, further according to bandwidth RB number, the maximum schedulable rate capacity of cell is calculated.The network equipment is calculated when concurrent user number is N, maximum scheduling rates obtained by single user according to the maximum schedulable rate capacity of the cell and equity dispatching principle, and using the maximum scheduling rates as the radio interface rate ability (V).
Wherein, in step 301, E2E RTT includes RAN RTT and RAN or more RTT.Wherein RAN above section RTT, because network is relatively stable after designated, time delay is basicly stable；And RAN RTT can be extracted by covering quality is eated dishes without rice or wine and load is affected when detecting to wireless quality from the practical business that network is initiated.
For example, obtaining the first RAN RTT includes: the round-trip delay RTT for obtaining UE to base station in the present embodiment.Specifically, as shown in figure 5, base station obtains transmission control protocol (Transmission Control Protocol, TCP) three-way handshake data of UE and server.Base station record server is sent to the first moment of the negotiated packet SYNACK of UE, such as timestamp t1；Base station records the UE in response to the second moment of the SYNACKACK packet of the server S YNACK, such as timestamp t2, and the time difference for calculating second moment and the first moment obtains the RAN RTT that is, according to timestamp t2-t1.
In the TCP Handshake Protocol, Transmission Control Protocol provides reliable connection service, establishes a connection using three-way handshake.Specifically, shake hands for the first time: when establishing connection, UE sends SYN packet (SYN=1) and arrives server, and enters SYN SEND state, waiting for server confirmation；SYN (Synchronize Sequence Numbers, synchronizing sequence number).Second handshake: after server receives SYN packet, it is necessary to confirm the SYN (ACK=X+1) of UE, while oneself also send a SYN packet (SYN=1), i.e. SYN+ACK packet, server enters SYN_RECV state at this time；Third time is shaken hands: UE receives the SYN+ACK packet of server, sends confirmation packet ACK (ACK=Y+1) to server, this packet is sent, and UE and server enter ESTABLISHED (TCP connection success) state, completes three-way handshake.After completing three-way handshake, UE and server start to transmit data.
Method provided in this embodiment, by obtaining radio interface rate ability and wireless side round-trip delay between base station and user equipment, and the video tastes that the radio open of base station is supported are determined using the two parameters, represent the video tastes that the wireless quality between base station and user equipment can be supported, find bottleneck existing for radio open, and wireless network planning is accurately instructed according to radio open pipeline ability, guarantee that wireless quality supports the optimum efficiency of video tastes.
Optionally, the first initial buffer time delay that the base station is supported is calculated according to the first radio interface rate ability and the first RAN RTT in step 302, and before the first Caton duration accounting of the support of the base station according to the first radio interface rate capacity calculation, further include: initial buffer Time Delay Model and Caton duration accounting model are established, detailed process includes:
Designated source first, then video source parameter is obtained according to the designated source, the video source parameter includes that resolution ratio, code rate, the RTT of the base station to Video service, buffer stage need data volume for downloading etc., the data flow for recycling the initial buffer of the video source parameter and the video source to need, establish initial buffer model, finally, calculating the first initial buffer time delay according to first radio interface rate, the first RAN RTT and the initial buffer model.
Similarly, the process for the Caton duration accounting supported according to the first radio interface rate calculation base station includes: to obtain designated source first, video source parameter is obtained according to the designated source, the video source parameter includes resolution ratio, code rate, RTT of the base station to Video service, buffer stage needs the data volume etc. downloaded, recycle the process in the video playing stage of the video source parameter and the video source, establish the Caton duration accounting model that the base station is supported, the first Caton duration accounting is finally calculated according to the first radio interface rate ability and the Caton duration accounting model.
Referring to Fig. 6, video display process includes: video preparation stage, video buffer stage and video playing stage.These three stages respectively correspond video source quality (sQuality), initial buffer time delay (sLoading), Caton duration accounting (sStalling).
Wherein, video source quality: include mainly video resolution and video code rate, can be obtained by designated source.Initial buffer time delay: including video preparation stage and video initial buffer stage.The video preparation stage is related to video related information and obtains (such as advertisement etc.), video divides fragment index file address and obtains, it redirects, the complex processes such as TCP link setup, these processes are closely related with end-to-end time delay (E2E RTT), so RTT number of E2E can be needed by analyzing designated source and being converted into, wherein the E2E RTT includes RTT on RAN RTT, RAN.
The video buffer stage is the true downloading process of video slicing data, under determining initial buffering data amount, video buffer downloading time delay can pass model according to video slicing information and TCP number and be assessed, it includes: that slow turn-on, Congestion Avoidance and stable state download three phases that the TCP number of video download, which passes model general process, as shown in Figure 7.
Wherein, in slow start stage, each E2E RTT time cycle, server TCP sends window and is exponentially increased.Enter congestion avoidance phase when TCP is sent when window reaches slow turn-on threshold values, influence factor includes that server initially sends window (m), slow turn-on threshold values (ssthrsh).Congestion avoidance phase each E2E RTT time cycle, server TCP sends window linear increase, and until reaching network bandwidth, into stable state download phase, influence factor includes that server sends window linear increase step-length (s).For stable state download phase with video traffic initial buffering data amount demand (T1), server stable state packet sending speed (v) is related.
Wherein, the server includes video server or OTT server.
The initial buffer Time Delay Model is related to video slicing information, initial buffering data amount and TCP transmission process,
As shown in Figure 8.Specifically, initial buffer Time Delay Model is expressed as follows:
When Caton duration accounting (sStalling) models, need to guarantee that radio interface rate ability is greater than designated and plays code rate (Bitrate) in the video playing stage.If the radio interface rate ability is greater than video playing code rate, video can be with normal play；If radio interface rate ability is less than video playing code rate, and without buffered data, then can generate Caton；Due to video playing code rate be it is continually changing, usual code rate considers the fluctuation of code rate using average bit rate, and no Caton plays, it is desirable that (such as downloading rate >=k* video of server to UE) averagely play code rate to E2E；If the downloading rate < k* video average bit rate, video download duration will be greater than video playing duration, it is considered as video cardton duration greater than video playing duration part.Generally, when k value is 1.3, video is substantially without Caton, therefore empirical value k value is 1.3), thus to establish following Caton duration accounting model:
Behind designated source, parameter relevant to the designated source immobilizes, for example, burst information, TCP initially sends window (m), TCP message size (MSS), slow turn-on threshold values (ssthrsh), Congestion Avoidance window increases step-length (s), speed of steady state (V), video playing code rate (Bitrate) and video initial buffer stage downloading data amount (T1), radio interface rate ability (V) relevant to wireless quality and RAN RTT then can correspondingly change.
In order to detect influence of the influence factor in wireless quality (radio interface rate ability and RAN RTT) to video tastes, according to the initial buffer Time Delay Model of above-mentioned foundation and Caton duration accounting model, preset parameter and the influence factor after substitution designated, the best video quality for eating dishes without rice or wine to support is calculated, is expressed as follows:
Wherein, the round-trip number of N expression video consultation, M indicates that the round-trip number of slow turn-on, RTT indicate that the round-trip delay between base station and UE, V indicate radio interface rate ability, unit is xMbps, m indicates that TCP is initially sent window (windows size), and MSS indicates TCP message size, and T1 indicates video buffer stage downloading data amount, B_inti indicates the data volume of video slow start stage downloading, and Bitrate indicates video code rate.
Establish video tastes model, can to for video source quality (sQuality), initial buffer time delay (sLoading),
Caton duration accounting (sStalling) exports modeler model respectively, can also export the video tastes model including three factors, and individually carry out simulant design to video source quality, initial buffer time delay, Caton duration accounting and whole video tastes.
One kind is possible to be achieved in that, according to relational expression: video tastes point=f (sQuality, sLoading, sStalling), can calculate video tastes point or video tastes index that each base station is supported.Wherein, the factors such as the video tastes index and initial buffer duration, Caton number, Caton duration, resolution ratio and screen size are related.Assuming that the video tastes of the base station of assessment are divided into X, the predetermined target value that operator's networking requires is Y, if X is more than or equal to Y, then indicate that base station reaches predetermined target value to the wireless quality between UE, base station needs to plan again, if X is less than Y, wireless quality is unsatisfactory for requiring, and base station needs to plan again.
A kind of possible video tastes point appraisal procedure is: referring to 12, indicating a kind of relational expression of video tastes point with resolution ratio, wherein with full marks be that 5 minute marks are quasi-, when video resolution is 720, obtainable video tastes divide 1-4/；When resolution ratio is 1080, the range of corresponding video tastes point is 1-4.5 points；The resolution ratio range that corresponding video tastes are divided when being 2000 is 1-4.8 points；The resolution ratio range that corresponding video tastes are divided when being 4000 is 1-4.9 points, that is, illustrates that the resolution ratio of video is higher, and the video tastes point of assessment are higher, is more able to achieve the user video experience relatively added.Specifically video tastes point and user's impression are as shown in table 1 below.
| Video tastes point | value | User's impression |
| 5 | Excellent | It is very good |
| 4 | Good | Very well |
| 3 | Fair | Good, slight dislike |
| 2 | Poor | Dislike |
| 1 | Bad | Dislike very much |
Table 1
Network evaluation planing method provided in this embodiment based on wireless support best video quality, both the assessment that wireless quality can support best video to experience may be implemented, find out bottleneck existing for radio open, best video experience can be supported to instruct video networks programming based on wireless quality again, guarantee that wireless network will not become video development bottleneck.
Compared to traditional E2E video quality evaluation method, by the radio interface rate ability and RAN RTT of studying base station, realize the detection to wireless quality between base station and UE, so that wirelessly supporting best video quality assessment that can focus on wireless network and support video quality, radio open pipeline ability is fully demonstrated.The detection method that the technical program provides, which is realized, supports that video quality assessment is planned based on most accurate wireless side, so that program results are reasonable.
It should be noted that, the embodiment of the present application providing method is by specifying the exemplary video source of network as assessment object, the radio interface rate ability and RAN RTT that influence the wireless quality between base station and UE are detected and planned, wherein, Planning instrument includes but is not limited to the modelings such as initial buffer time delay, Caton duration accounting, Caton duration, weight buffer delay and calculates.I.e. by video tastes theoretical modeling, best video of eating dishes without rice or wine experience assessment, planning and three processes of simulation and prediction, the method for carrying out wireless network planning to the best video experience that current wireless quality is supported belongs to this Shen
In the range of please protecting.
In the application optional embodiment, if detection base station radio quality is unsatisfactory for requiring, i.e., video tastes point are less than the predetermined target value, then plan the wireless quality for needing the base station, as shown in figure 9, detailed process includes:
Step 305: the network equipment establishes the function model of the Key Performance Indicator (Key Performance Indicators, KPI) of the first RAN RTT and network.
Step 306: network KPI information is obtained after simulant design, the network KPI information includes the second radio interface rate ability, cell telephone traffic, cell load, community user number etc..
Step 307: the 2nd RAN RTT after planning is calculated using network KPI information and the second radio interface rate ability and the function model.
Specifically, due to radio interface rate ability after planning, that is the parameters such as the second radio interface rate ability and community user number, subscriber signal quality are related, changes will occur for the traffic of cell, community user number and signal quality after planning, pass through cell telephone traffic, community user number, signal quality after emulation, recalculate radio interface rate ability, i.e. the second radio interface rate ability.
Cell telephone traffic, community user number, cell load etc. change after step 307 simulant design, in conjunction with the second radio interface rate ability, RAN RTT, i.e. the 2nd RAN RTT after prediction planning.
After obtaining the second radio interface rate ability and planning after RAN RTT, the second initial buffer time delay that the base station is supported is calculated according to the RAN RTT after the second radio interface rate ability and the planning, and the second Caton duration accounting, the second video tastes point that the base station is supported after then recycling the second initial buffer time delay, the second Caton duration accounting and designated source quality to determine planning；Compare size of the second video tastes point with the predetermined target value, if the second video tastes point are greater than or equal to the predetermined target value, then the base station after the planning and the wireless quality between UE are met the requirements, and the wireless quality after planning reaches network operator's requirement；It if it is less than the predetermined target value, then needs again to plan radio interface rate ability and RAN RTT, until the video tastes after planning point reach predetermined target value.
Wireless quality Planning instrument described in the present embodiment includes being not limited to video properties, product characteristic (such as CA&mTnR etc.), multicarrier, more sectors, macro micro- station, room substation etc..
Wireless quality provided in this embodiment supports the programme of video tastes, the method for supporting to carry out big data modeling by the factors such as RAN RTT and network KPI, number of users, load, RAN RTT after predicting the network planning, the video tastes supported under wireless network maximum pipeline ability are represented, and the video tastes short slab occurred due to wireless quality found out is planned and solved.
The embodiment of the present application also provides a kind of detection device of wireless quality support video tastes, and the detection device is for realizing the function in preceding method embodiment.Specifically, as shown in Figure 10, which includes: acquiring unit 1001
With processing unit 1002, in addition to the acquiring unit 1001 and processing unit 1002, the apparatus may include other unit modules such as transmission unit and storage unit.
Acquiring unit 1001 includes the first radio interface rate ability and the first wireless side round-trip delay RAN RTT that data are transmitted between base station and user equipment (UE) in the network information for obtaining the network information of radio node in network.
Processing unit 1002, for the first initial buffer time delay according to the first radio interface rate ability and the support of the first RAN RTT calculation base station, and the first Caton duration accounting that the base station according to the first radio interface rate capacity calculation is supported.
Processing unit 1002 is also used to determine that base station radio is eated dishes without rice or wine the first video tastes point supported using the first initial buffer time delay, the first Caton duration accounting and designated source quality.
Processing unit 1002, is also used to judge whether first video tastes point are less than predetermined target value, if it is less than the predetermined target value, it is determined that the base station cannot be met the requirements to the wireless quality between UE.
Optionally, acquiring unit 1001, the first radio interface rate ability supported for obtaining the base station, the radio interface rate ability are at least one UE that the base station covers, and average each UE transmits the peak transfer rate obtained when data.
Optionally, acquiring unit 1001, it is also used to obtain the first moment that the server in the network is sent to the UE negotiated packet SYNACK by base station, the UE is obtained in response to the SYNACK by base station and is sent to the second moment of the server S YNACKACK, and the UE is calculated to the first RAN RTT between the base station according to first moment and second moment.
Optionally, processing unit 1002, it is also used to obtain designated source, video source parameter is obtained according to the designated source, the video source parameter includes that resolution ratio, code rate, the RTT of the base station to Video service, buffer stage need the data volume downloaded, the data flow needed using the initial buffer of the video source parameter and the video source, establishes initial buffer model；According to first radio interface rate, the first RAN RTT and the initial buffer model, the first initial buffer time delay is calculated.
Optionally, processing unit 1002, the processing unit are also used to obtain designated source；Video source parameter is obtained according to the designated source, the video source parameter includes that resolution ratio, code rate, the RTT of the base station to Video service, buffer stage need the data volume downloaded, using the process in the video playing stage of the video source parameter and the video source, the Caton duration accounting model that the base station is supported is established；The first Caton duration accounting is calculated according to first radio interface rate and the Caton duration accounting model.
Optionally, the function model of the Key Performance Indicator KPI of the first RAN RTT and the network is established if being also used to the video tastes point is less than the predetermined target value in processing unit 1002；Network KPI information is obtained after simulant design, the network KPI information includes the second radio interface rate ability；The 2nd RAN RTT after planning is calculated using network KPI information and the second radio interface rate ability and the function model.
Optionally, processing unit 1002 are also used to calculate the second initial buffer time delay and the second Caton duration accounting that the base station is supported according to the RAN RTT after the second radio interface rate ability and the planning；The second video tastes point of the base station support after planning are determined using the second initial buffer time delay, the second Caton duration accounting and designated source quality；If second video tastes point are greater than or equal to the predetermined target value, the base station after the planning and the wireless quality between UE are met the requirements.
Wireless quality provided in this embodiment supports the detection device of video tastes, by obtaining radio interface rate ability and wireless side round-trip delay between base station and user equipment, and the video tastes that the radio open of base station is supported are determined using the two parameters, represent the video tastes that the wireless quality between base station and user equipment can be supported, find bottleneck existing for radio open, and wireless network planning is accurately instructed according to radio open pipeline ability, guarantee that wireless quality supports the optimum efficiency of video tastes.
Referring to Figure 11, present invention also provides a kind of network equipments, for realizing the method and step in previous embodiment.
Wherein, the network equipment can be made of transceiver 1101, processor 1102 and memory 1103 etc..
Processor 1102 is the control centre of the network equipment, utilize the various pieces of various interfaces and connection whole network equipment, by running or executing the software program and/or module that are stored in memory, and the data being stored in memory are called, to execute the various functions and/or processing data of network side equipment.
Processor 1102 can be central processing unit (central processing unit, CPU), the combination of network processing unit (network processor, NP) or CPU and NP.Processor can further include hardware chip.Above-mentioned hardware chip can be specific integrated circuit (application-specific integrated circuit, ASIC), programmable logic device (programmable logic device, PLD) or combinations thereof.Above-mentioned PLD can be Complex Programmable Logic Devices (complex programmable logic device, CPLD), field programmable gate array (field-programmable gate array, FPGA), Universal Array Logic (generic array logic, GAL) or any combination thereof.
Memory 1103 may include volatile memory (volatile memory), such as random access memory (random access memory, RAM)；Can also include nonvolatile memory (non-volatile memory), such as flash memory (flash memory), hard disk (hard disk drive, HDD) or solid state hard disk (solid-state drive, SSD)；Memory can also include the combination of the memory of mentioned kind.
Transceiver 1101 can be used for receiving or sending data, the transceiver can each node under from the control of the processor to video networking system or other equipment send and receive each node under the control of data and the processor or data that other equipment are sent.
In the embodiment of the present application, transceiver 1101 can be used to implement for receiving the network information of radio node in network in previous embodiment, include the radio interface rate ability and RAN RTT that data are transmitted between base station and user equipment (UE) in the network information.The function to be realized of acquiring unit 1001 in aforementioned device embodiment can be realized by the transceiver 1101 of the network equipment, or controlled transceiver 1101 by processor 1102 and realized.The processing
The function to be realized of unit 1002 can also be realized by the processor 1102 of the network equipment.
In specific implementation, the application also provides a kind of computer storage medium, wherein, which can be stored with program, which may include step some or all of in each embodiment for the detection method that wireless quality provided by the present application supports video tastes when executing.The storage medium can be magnetic disk, CD, read-only memory (read-only memory, ROM) or random access memory (random access memory, RAM) etc..
The UE described in present embodiments can also be referred to as terminal (Terminal), mobile station (mobile station, MS), mobile terminal (mobile terminal, MT), remote equipment (remote terminal, RT), access terminal (access terminal, AT), user agent (user agent, UA) etc..UE can be through wireless access network (radio access network, RAN it) is communicated with one or more core net, or distributed network can be accessed self-organizing or by way of exempting from authorization, UE can also access otherwise wireless network and be communicated, UE can also directly be carried out wireless communication with other UE, and the embodiment of the present invention is not construed as limiting this.
The UE can be mobile phone (mobile phone), tablet computer (Pad), computer with radio transmission-receiving function, virtual reality (Virtual Reality, VR) terminal device, augmented reality (Augmented Reality, AR) terminal device, wireless terminal in Industry Control (industrial control), wireless terminal in unmanned (self driving), wireless terminal in tele-medicine (remote medical), wireless terminal in smart grid (smart grid), wireless terminal in transportation safety (transportation safety), smart city (smart City the wireless terminal etc. in wireless terminal, wisdom family (smart home) in).
The base station can be enhanced base station or the relaying with scheduling feature or the equipment with base station functions etc..Wherein, the base station can be the evolved base station (evolvedNode B, eNB) in network system, can not also be limited with the base station in other systems, the embodiment of the present application.
Those skilled in the art can be understood that the technology in the embodiment of the present application can be realized by means of software and necessary general hardware platform.Based on this understanding, substantially the part that contributes to existing technology can be embodied in the form of software products technical solution in the embodiment of the present application in other words, the computer software product can store in storage medium, such as ROM/RAM, magnetic disk, CD, it uses including some instructions so that a computer equipment (can be personal computer, server or the network equipment etc.) execute method described in certain parts of each embodiment of the application or embodiment.
Same and similar part may refer to each other between each embodiment in this specification.For above-described embodiment, since it is substantially similar to the method embodiment, so being described relatively simple, related place is referring to the explanation in embodiment of the method.
Invention described above embodiment is not intended to limit the scope of the present invention..
Claims (16)
- A kind of wireless quality supports the detection method of video tastes, which is characterized in that the described method includes:The network information of radio node in network is obtained, includes the first radio interface rate ability and the first wireless side round-trip delay RAN RTT for transmitting data between base station and user equipment (UE) in the network information；The first initial buffer time delay that the base station is supported, and the first Caton duration accounting that the base station according to the first radio interface rate capacity calculation is supported are calculated according to the first radio interface rate ability and the first RAN RTT；Determine that the base station radio is eated dishes without rice or wine the first video tastes point supported using the first initial buffer time delay, the first Caton duration accounting and designated source quality；Judge whether first video tastes point are less than predetermined target value, if it is less than the predetermined target value, it is determined that the base station cannot be met the requirements to the wireless quality between UE.
- The method according to claim 1, wherein the first radio interface rate ability obtained in the network information includes:The first radio interface rate ability that the base station is supported is obtained, the radio interface rate ability is at least one UE that the base station covers, and average each UE transmits the peak transfer rate obtained when data.
- The method according to claim 1, wherein acquisition the first RAN RTT includes:Obtain the first moment that the server in the network is sent to the UE negotiated packet SYNACK；The UE is obtained in response to the SYNACK and is sent to the second moment of the server S YNACKACK；The UE is calculated to the first RAN RTT between the base station according to first moment and second moment.
- The method according to claim 1, wherein calculating the first initial buffer time delay that the base station is supported according to the first radio interface rate ability and the first RAN RTT, comprising:Obtain designated source；Video source parameter is obtained according to the designated source；The data flow needed using the initial buffer of the video source parameter and the video source, establishes initial buffer model；According to the first radio interface rate ability, the first RAN RTT and the initial buffer model, the first initial buffer time delay is calculated.
- The method according to claim 1, wherein the Caton duration accounting that the base station according to the first radio interface rate capacity calculation is supported, comprising:Obtain designated source；Video source parameter is obtained according to the designated source；Using the process in the video playing stage of the video source parameter and the video source, the Caton duration accounting model that the base station is supported is established；The first Caton duration accounting is calculated according to the first radio interface rate ability and the Caton duration accounting model.
- Method according to claim 1-5, which is characterized in that if the video tastes point are less than the predetermined target value, the method also includes:Establish the function model of the Key Performance Indicator KPI of the first RAN RTT and the network；Network KPI information is obtained after simulant design, the network KPI information includes the second radio interface rate ability；The 2nd RAN RTT after planning is calculated using network KPI information and the second radio interface rate ability and the function model.
- According to the method described in claim 6, it is characterized in that, the method also includes:The the second initial buffer time delay and the second Caton duration accounting that the base station is supported are calculated according to the RAN RTT after the second radio interface rate ability and the planning；The second video tastes point of the base station support after planning are determined using the second initial buffer time delay, the second Caton duration accounting and designated source quality；If second video tastes point are greater than or equal to the predetermined target value, the base station after the planning and the wireless quality between UE are met the requirements.
- A kind of wireless quality supports the detection device of video tastes, which is characterized in that described device includes:Acquiring unit includes the first radio interface rate ability and the first wireless side round-trip delay RAN RTT that data are transmitted between base station and user equipment (UE) in the network information for obtaining the network information of radio node in network；Processing unit, for calculating the first initial buffer time delay that the base station is supported, and the first Caton duration accounting that the base station according to the first radio interface rate capacity calculation is supported according to the first radio interface rate ability and the first RAN RTT；The processing unit is also used to determine that the base station radio is eated dishes without rice or wine the first video tastes point supported using the first initial buffer time delay, the first Caton duration accounting and designated source quality；The processing unit, is also used to judge whether first video tastes point are less than predetermined target value, if it is less than the predetermined target value, it is determined that the base station cannot be met the requirements to the wireless quality between UE.
- Device according to claim 8, which is characterized in thatThe acquiring unit, the first radio interface rate ability supported for obtaining the base station, the radio interface rate ability are at least one UE that the base station covers, and average each UE transmits the peak transfer rate obtained when data.
- Device according to claim 8, which is characterized in thatThe acquiring unit, it is also used to obtain the first moment that the server in the network is sent to the UE negotiated packet SYNACK, the UE is obtained in response to the SYNACK and is sent to the second moment of the server S YNACKACK, and the UE is calculated to the first RAN RTT between the base station according to first moment and second moment.
- Device according to claim 8, which is characterized in thatThe processing unit is also used to obtain designated source, obtains video source parameter according to the designated source, and the data flow needed using the initial buffer of the video source parameter and the video source establishes initial buffer model；According to first radio interface rate, the first RAN RTT and the initial buffer model, the first initial buffer time delay is calculated.
- Device according to claim 8, which is characterized in thatThe processing unit is also used to obtain designated source；Video source parameter is obtained according to the designated source, using the process in the video playing stage of the video source parameter and the video source, establishes the Caton duration accounting model that the base station is supported；The first Caton duration accounting is calculated according to first radio interface rate and the Caton duration accounting model.
- According to the described in any item devices of claim 8-12, which is characterized in thatThe processing unit establishes the function model of the Key Performance Indicator KPI of the first RAN RTT and the network if being also used to the video tastes point is less than the predetermined target value；Network KPI information is obtained after simulant design, the network KPI information includes the second radio interface rate ability；The 2nd RAN RTT after planning is calculated using network KPI information and the second radio interface rate ability and the function model.
- Device according to claim 13, which is characterized in thatThe processing unit is also used to calculate the second initial buffer time delay and the second Caton duration accounting that the base station is supported according to the RAN RTT after the second radio interface rate ability and the planning；The second video tastes point of the base station support after planning are determined using the second initial buffer time delay, the second Caton duration accounting and designated source quality；If second video tastes point are greater than or equal to the predetermined target value, the base station after the planning and the wireless quality between UE are met the requirements.
- A kind of network equipment, which is characterized in that the detection device of video tastes is supported including the described in any item wireless qualities of claim 8 to 14.
- A kind of computer readable storage medium, which is characterized in that the computer readable storage medium includes instruction, when described instruction is run on computers, so that the computer executes the described in any item methods of claim 1 to 7.
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| PCT/CN2017/076119 WO2018161303A1 (en) | 2017-03-09 | 2017-03-09 | Method and apparatus for monitoring video quality of experience supported by wireless quality of service |
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