CN103905272A - Available bandwidth measuring method and system of wireless network - Google Patents
Available bandwidth measuring method and system of wireless network Download PDFInfo
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Abstract
The invention discloses an available bandwidth measuring method and system of a wireless network. At each identical measuring cycle, a client side sends an uplink grouping chain to a service side, after the service side receives the uplink grouping chain, a downlink grouping chain is sent to the client side, the uplink grouping chain and the downlink grouping chain both comprise continuous data packages, and then the client side computes uplink available bandwidth, lower link bandwidth and relevant parameters according to the uplink grouping chain, the downlink grouping chain and end receiving information. The grouping chains comprise the continuous the data packages, the maximum network bandwidth can be fully used, influence of a slow-starting and low-load scheduling mechanism is avoided, the grouping chains are short-lasting and high-density pulses, instant load is high enough and can impact the maximum theoretical value of a network, in macroscopic time, average load can be maintained at a low level, the maximum bandwidth is detected, meanwhile, the smallest number of network resources are used, influence on a normal network user is avoided, and a short-pulse mode can meet the requirement of the high instant resolution ratio.
Description
Technical field
The present invention relates to moving communicating field, particularly a kind of availability bandwidth measurement method of wireless network and system.
Background technology
Bandwidth is one of important parameter of network path, and the development of bandwidth measurement technology contributes to web application to improve service quality, and it is all widely used in fields such as capacity distribution, Service Quality Management, server Route Selection.
The fast development of mobile network's technology, provides more and more higher message transmission rate, and meanwhile, the application on network is more and more diversified, and as video flowing etc., it is also increasing gradually to the requirement of network performance.Available bandwidth is the important indicator of network performance, and the Measurement accuracy of available bandwidth is end to end that the network optimization one of must survey project.
As everyone knows, mobile network's performance-critical is wireless environment, but wireless environment can rapid fluctuations, such as because signal multipath fading or base station scheduling or other customer flow impacts etc.However, mobile operator must be to for the client of same grade of service defrayment provides unified available bandwidth.Active available bandwidth measurement, is often to carry out in the network that has business user end to end, therefore, avoids the impact that existing user is experienced just to become extremely important.
In wireless network, the conventional method of measuring available bandwidth was quite simple, conventionally used FTP to download and upload file in the past.These methods only limited mechanism adapt to the change of wireless environment, although not perfect, be enough to tackle WCDMA Release 99 or version more early.
Up-to-date mobile system, for example LTE and HSPA, many new features that they comprise make traditional F TP availability bandwidth measurement method no longer applicable.These new features are mainly:
1, in LTE and HSPA network, wireless channel is shared resources to all users in community, and a testing equipment is initiated ftp file transmission, can greatly have influence on other users in community.
2, same Radio Access Network also can be shared by multiple operators (communication business), and this has proposed requirement to concurrent testing, because the service subscription of heterogeneous networks operator can be shared wireless network, but has independently core network etc.
3, high data rate.For example, under the unloaded LTE network of a 20Mhz bandwidth, its theoretical downloading rate can reach 100 Mbit/s.In order to test this true bandwidth, the each part in system, from server to client end, all must correctly configure, just can reach such transmission rate, whole process implementation more complicated, and some UE is due to CPU ability or battery capabilities limits, cannot reach so high data-handling capacity.
4, there is multiple network configuration.LTE network can use the different MIMO configurations of many arrays, and the scheduler of this technology has very powerful and scheduling mechanism flexibly, with the maximized wireless link (uplink and downlink) that utilizes.Traditional Available Bandwidth Measurement Technologies can not adapt to the fast-changing situation of this link capability.
The impulse sampling availability bandwidth measurement method (being called for short PBM) of DingLi, the theoretical maximum bandwidth that can provide by the identification current wireless link of surveying (in a certain place sometime), inject appropriate flow bag to network to short pulse formula, record current network available bandwidth.In ensureing result accuracy, do not affect existing user's experience, existing network is kept to low intensity of infestation.
According to the new features of above up-to-date mobile system, PBM method should meet following requirement in the time measuring:
1, to web influence minimum.In the available bandwidth of network, must keep low intensity of infestation at guarantee accurate detection.Averaging network load in certain hour will keep alap level, so just can make the minimum interference to the normal network user.
2, following the tracks of fast wireless network changes.Method of testing must be considered the wireless link attribute under vertiginous multipath fading state, and Measuring Time is short, reflects rapidly available bandwidth at that time.
3, the self adaptation of network and user device configuration.Method of testing must be considered different MIMO configurations, channel width, UE ability rating.
4, scheduling mechanism adapts to.Method of testing need to consider that network is the scheduling mechanism that maximum using radio path adopts, and this scheduling mechanism conventionally carrys out management resource according to business model, service quality setting and loading condition and distributes.
Just, based on this, need new PBM method of testing to substitute traditional F TP availability bandwidth measurement method.
Summary of the invention
For addressing the above problem, the object of the present invention is to provide a kind of availability bandwidth measurement method and system of wireless network, can accurate detection to the available bandwidth of wireless network, and in the time of test, lower to the intensity of infestation of network; Testing time is shorter, and can follow the tracks of fast wireless network variation; The configuration of network and subscriber equipment in can self adaptation different networks; Wireless network scheduling mechanism adapts to automatically.
The present invention solves the technical scheme that its problem adopts:
An availability bandwidth measurement method for wireless network, comprising:
At interval of identical measuring period, send upstream packet chain by client to service end short pulse formula, service end receives the backward client short pulse of upstream packet chain formula reflection downlink grouped chain;
Client is received automatic acquisition of scientific information upstream and downstream bandwidth according to upstream packet chain, downlink grouped chain and termination;
Wherein, described termination is collected mail and cease the reception information generating for client in the time being received downlink grouped chain.
Can automatically configure measuring period according to different wireless environments, to ensure having enough time outs between twice measurement, and at this moment, do not send any data, is defaulted as 0.5 second measuring period, at interval of 0.5 second, calculates upstream and downstream bandwidth one time.Adopt short pulse mode can ensure that instantaneous load is enough high, can impact the maximum theoretical of network, and macroscopical temporal average load can keep a low level, this mechanism can detect maximum bandwidth, simultaneously minimum use Internet resources again, thus avoid the normal network user to exert an influence.
Further, described upstream packet chain and downlink grouped chain all include continuous packet, and the number of packet and bag size are adjusted according to the wireless network environment of current Real-Time Monitoring and terminal capability grade automatic dynamic.The accuracy of PBM test depends on packet number and the data package size in data queue, therefore, the present invention adopts short pulse formula to send a string continuous data packet queue in time, an instead of single packet, can guarantee like this in whole pulse, at least some middle TTI(Transmission Time Intervals) be whole active volumes that can reach PBM test request.And the present invention is owing to being provided with measuring period, therefore, although be continuous packet, also can ensure lower intensity of infestation.
Further, described packet is UDP bag.
Further, described client is PBM client, and described service end is PBM service end.
Further, described client is collected mail and is ceased all right automatic acquisition up-downgoing time delay, up-downgoing number of dropped packets, up-downgoing packet loss according to upstream packet chain, downlink grouped chain and termination.
Further, described upstream packet chain comprise uplink packet transmitting time with information, up transmission bag number, descending should reflection wrapped number and bag size, described downlink grouped chain comprise downstream packets transmitting time with information, service end is received first, the actual uplink packet number of receiving of last uplink packet time and service end, the described termination breath of collecting mail comprises that client receives first, the actual downstream packets number of receiving of last downstream packets time and client, upstream bandwidth=(wrapping the actual uplink packet number of receiving of big or small * 8* service end)/(when service end is received last uplink packet, m-service end is received first uplink packet time) that client is calculated according to the above information, described downlink bandwidth=(wrapping the actual downstream packets number of receiving of big or small * 8* client)/(when client is received last downstream packets, m-client is received first downstream packets time), when described uplink time delay=service end is received last uplink packet, m-uplink packet is finally wrapped transmitting time, m-descending last bag transmitting time when described descending time delay=client is received last downstream packets, described up number of dropped packets=up transmission bag number-service end is received uplink packet number, the actual downstream packets number of receiving of described descending number of dropped packets=descending transmission bag number-client, described up packet loss=up number of dropped packets/uplink packet number, described descending packet loss=descending number of dropped packets/downstream packets number.
Further, the packet structure in described up-downgoing packet train is based on TWAMP protocol extension.
An available bandwidth measurement system for wireless network, comprises PBM client and PBM service end,
Described PBM client, at interval of identical measuring period, sends upstream packet chain to PBM service end short pulse formula;
Described PBM service end is for receiving after upstream packet chain to PBM client short pulse formula reflection downlink grouped chain;
Described PBM client is also for receiving automatic acquisition of scientific information upstream and downstream bandwidth according to upstream packet chain, downlink grouped chain and termination;
Wherein, described termination is collected mail and cease the reception information generating for client in the time being received downlink grouped chain.
Further, described upstream packet chain and downlink grouped chain all include continuous packet, and the number of packet and bag size are adjusted according to the wireless network environment of current Real-Time Monitoring and terminal capability grade automatic dynamic.
Further, described PBM client is collected mail and is ceased all right automatic acquisition up-downgoing time delay, up-downgoing number of dropped packets, up-downgoing packet loss according to upstream packet chain, downlink grouped chain and termination.
Further, described upstream packet chain comprise uplink packet transmitting time with information, up transmission bag number, descending should reflection wrapped number and bag size, described downlink grouped chain comprise downstream packets transmitting time with information, service end is received first, the actual uplink packet number of receiving of last uplink packet time and service end, the described termination breath of collecting mail comprises that client receives first, the actual downstream packets number of receiving of last downstream packets time and client, upstream bandwidth=(wrapping the actual uplink packet number of receiving of big or small * 8* service end)/(when service end is received last uplink packet, m-service end is received first uplink packet time) that client is calculated according to the above information, described downlink bandwidth=(wrapping the actual downstream packets number of receiving of big or small * 8* client)/(when client is received last downstream packets, m-client is received first downstream packets time), when described uplink time delay=service end is received last uplink packet, m-uplink packet is finally wrapped transmitting time, m-descending last bag transmitting time when described descending time delay=client is received last downstream packets, described up number of dropped packets=up transmission bag number-service end is received uplink packet number, the actual downstream packets number of receiving of described descending number of dropped packets=descending transmission bag number-client, described up packet loss=up number of dropped packets/uplink packet number, described descending packet loss=descending number of dropped packets/downstream packets number.
The invention has the beneficial effects as follows:
The present invention adopts a kind of availability bandwidth measurement method and system of wireless network, continue with short, highdensity mode sends upstream packet chain, and between twice transmission, there is longer time out, upstream packet chain includes continuous packet, the quantity of wrapping in continuous data bag and size its instantaneous load after optimizing is enough high, can impact the maximum theoretical of network, and the average load of upper network of macroscopic view time can keep a low level, this mechanism makes not only can detect maximum bandwidth, simultaneously minimum use Internet resources again, the normal network user is exerted an influence avoiding.The upstream packet chain that the present invention sends is a kind of short pulse, uses the mode of short pulse can meet the requirement of high instantaneous resolution, is can obtain optimum wireless environment to send data and obtain bandwidth information now at least once in a while time.Design packet train, can make full use of maximum network bandwidth, and can not be subject to the impact of slow startup and low load dispatch mechanism.Mutual based between client and service end of global design, realize simple, convenient test.When test, service end can be reflected back client by packet train, and packet train comprises timestamp and out of Memory, therefore, by service end being deployed in to the diverse location of network, performance that can test network various piece.
Brief description of the drawings
Below in conjunction with accompanying drawing and example, the invention will be further described.
Fig. 1 is the schematic flow sheet of the method for the invention;
Fig. 2 is that packet train of the present invention sends schematic diagram;
Fig. 3 is Packet Generation schematic diagram of the present invention;
Fig. 4 is the method for the invention test result contrast schematic diagram;
Fig. 5 is the result contrast schematic diagram of the actual test of the present invention.
Embodiment
Shown in Fig. 1, the invention provides. a kind of availability bandwidth measurement method of wireless network, comprising:
At interval of identical measuring period, send upstream packet chain by client to service end short pulse formula, service end receives the backward client short pulse of upstream packet chain formula reflection downlink grouped chain;
Client is received automatic acquisition of scientific information upstream and downstream bandwidth according to upstream packet chain, downlink grouped chain and termination;
Wherein, described termination is collected mail and cease the reception information generating for client in the time being received downlink grouped chain.
Described upstream packet chain and downlink grouped chain all include continuous packet, described packet is UDP bag, packet structure is based on TWAMP protocol extension, and the number of packet and bag size are adjusted according to the wireless network environment of current Real-Time Monitoring and terminal capability grade automatic dynamic.
Described client is PBM client, and described service end is PBM service end.
Mutual based between PBM client and PBM service end of global design of the present invention, when test, first client sends upstream packet chain, service end receives back reflection downlink grouped chain to client, because packet train comprises timestamp and corresponding statistical information, therefore, by service end being deployed in to the diverse location of network, performance that can test network various piece.
Described client is collected mail and is ceased all right automatic acquisition up-downgoing time delay, up-downgoing number of dropped packets, up-downgoing packet loss according to upstream packet chain, downlink grouped chain and termination.
Shown in Fig. 2, automatically configure described measuring period according to different wireless environments, and acquiescence is 0.5 second measuring period.
For can accurate detection to the available bandwidth of network, keep lower intensity of infestation simultaneously, packet will be according to shortly continuing, highdensity mode sends, between twice transmission, there is longer time out, to ensure that instantaneous load is enough high, can impact the maximum theoretical of network, and macroscopical temporal average load can keep a low level.This mechanism not only can detect the maximum bandwidth of wireless network, and use Internet resources that simultaneously again can be minimum exert an influence to the normal network user avoiding.In order to reach this kind of object, the every interval through measuring period (0.5 second) of upstream packet chain sends, and sends downlink grouped chain (the up statistical information now receiving with service end in grouping bag) after server receives.In the centre of up-downgoing packet train burst, any data do not send.
Because upstream packet chain is short pulse, therefore, it can meet the requirement of high instantaneous resolution, at least once in a while time, is can obtain optimum wireless environment to send data and obtain bandwidth information now.
Shown in Fig. 3, in up-downgoing packet train, included packet is continuous in time packet, and the size of packet and number are all carried out optimized design according to different wireless network environments, can make full use of maximum network bandwidth, and can not be subject to the impact of slow startup and low load dispatch mechanism.The present invention can adaptive network configuration parameter, and sending data volume can maximum throughput Network Based and adjust, and guarantees the impact of network to maintain floor level simultaneously.
The accuracy of PBM test of the present invention depends on the number of packet and the size of packet, also has concrete instantaneous data rates.The concrete momentary rate here should arrange corresponding maximum bandwidth according to current system parameter, UE ability and other and carry out corresponding configuration.In order to ensure the accuracy of measuring, need to send a string continuous data packet queue in time, instead of a single packet.Doing is like this because if only send a packet, and this packet is filled out a discontented TTI(Transmission Time Interval most probably), or it to be assigned to 2 TTI upper, these two TTI are discontented with again, thereby do not reach maximum available bandwidth.If send continuous multiple packets, and it is upper to be dispatched to continuous TTI, so just can guarantee in whole pulse, and at least some TTI of centre are whole active volumes that can reach requirement that PBM tests.Suppose that a TTI can hold 100,000 bits, the capacity of 1 IP bag is Isosorbide-5-Nitrae 00 byte (considering that network MTU is less than 1500 sometimes, equals 11,200 bits sometimes).So just need at least 8.9 IP bags (100,000/11,200) to fill up a TTI.For the TTI filling up completely in PBM test service, can not only have one, but need to have a rational quantity, so foregoing 8.9 IP bag just can not only send once, and should send repeatedly.Meanwhile, must note a trade-off problem, because the quantity of Packet Generation is directly connected to the intensity of infestation to network.
The present invention is in order to solve the equilibrium problem between intensity of infestation and accuracy of measurement, under the different terminals and network configuration of different radio ring and correspondence, the number of packet and the size of packet in the continuous data bag that optimization upstream packet chain and downlink grouped chain comprise.The present invention carries out the automatic switchover of data package size under different radio environment according to following form, to meet the balance between intensity of infestation and accuracy of measurement, form is as follows:
In table, while being LTE/20MHZ/2TBs/3 class UE for wireless environment, collocating uplink bag number is 40, downstream packets number 60, and bag size is 1400Byte.The present invention, for conventional LTE network test, has higher accuracy and lower network intensity of infestation, has in the prior art important using value.
It is to carry out according to the configuration of adaptive radio bearer that the attribute (bag size and number) of PBM data queue is selected.Like this, will use different PBM to arrange for heterogeneous networks/operator.In actual test process, PBM packet train is mainly to follow UE to move in minizone by adjust at any time these variations along with the variation of wireless environment, or move to another one carrier wave, or be switched in another one wireless access technology and occur, for example,, between 3G WCDMA and 4G LTE network.
PBM technology mainly depends on a Time-Stamping Protocol, and this agreement is commonly called the two-way agreement (TWAMP) of initiatively measuring.Other Time-Stamping Protocol also can use in theory, but finally selects TWAMP agreement to be because it has been a standard agreement in this field, and implements simply, to be easy to expansion.The continuous data bag that up-downgoing packet train of the present invention comprises is UDP bag, because network environment packet loss may occur when bad, therefore described service end and client all have timeout treatment mechanism, exceed certain hour and do not receive and think generation packet loss, and packet structure in described up-downgoing packet train is expanded based on TWAMP agreement.
Client is in the time sending upstream packet chain, and the packet of upstream packet chain comprises following field:
Up_time: uplink packet transmitting time, send_count: uplink packet number, reflect_count: downstream packets number, reflect_size_byte: bag size.
Downlink grouped chain has 2 use, and the first, in each bag, with service end uplink receiving information, client can be used to calculate up QOS(service quality); The second, after client downlink grouped chain, can calculate descending QOS.
The packet of described downlink grouped chain comprises following critical field:
Down_time: downstream packets transmitting time, up_first_recv_time: service end is received first uplink packet time, up_last_recv_time: service end is received the last uplink packet time, up_recv_count: service end is received uplink packet number.
After the complete downlink grouped chain of client, itself can obtain following termination collection of letters breath:
Down_first_recv_time: client is received first downstream packets time, down_last_recv_time: client is received last downstream packets time, down_recv_count: client is received downstream packets number.
According to the above, can calculate upstream bandwidth and downlink bandwidth, and uplink time delay, up number of dropped packets, up packet loss, descending time delay, descending number of dropped packets and descending packet loss.Wherein:
Upstream bandwidth: up_bandwidth_bps=(wraps big or small * 8* up_recv_count)/(up_last_recv_time – up_first_recv_time).
Uplink time delay: up_delay_ms=up_last_recv_time-up_time.
Up number of dropped packets: up_lost_pkgs=send_count-up_recv_count.
Up packet loss: up_lost_fraction=up_lost_pkgs/send_count * 100%.
Downlink bandwidth: down_bandwidth_bps=(wrapping big or small * 8* down_recv_count)/(down_last_recv_time-down_first_recv_time).
Descending time delay: down_delay_ms=down_last_recv_time-down_time.
Descending number of dropped packets: down_lost_pkgs=reflect_count-down_recv_count.
Descending packet loss: down_lost_fraction=down_lost_pkgs/reflect_count * 100%.
Each measuring period, all can produce one group of up-downgoing measurement data.Only use the very short time owing to sending upstream packet chain and downlink grouped chain, also just very low to the intensity of infestation of network.In drive test process, wireless network can change at any time, for example, be switched to WCDMA network from LTE network, and the bag number of packet train and bag size also will, along with network switches and changes to some extent, so just can ensure that long-time measurement all can be very low to the intensity of infestation of network.Just, based on this, in the present invention, in the continuous data bag that described upstream packet chain comprises from downlink grouped chain, the number of packet and the large I of packet are adjusted automatically according to different wireless environments.
Shown in Fig. 4, for PBM method of testing of the present invention is compared with traditional F TP mode, the schematic diagram of acquired results, in figure, curve is real available bandwidth; Cylinder represents DingLi PBM data burst, and obtains and approach maximum bandwidth in one second of PBM data burst; Article two, average bandwidth in the region representation that the Ah of dotted line institute draws obtain by FTP 1 second.As we know from the figure, in obtain by FTP one second, average throughput is lower than the maximum throughput rate that can reach.
While testing the method for available bandwidth employing operation ftp session in wireless network, what speed was got is application layer speed, and this speed can report once a second conventionally, and the value of reporting is the mean value in this second.In this case, have no idea to obtain the more application layer speed of high-resolution (chronomere is less than 1s's) at all.That is to say, cannot reflect the rate behavior of RF layer.
Present situation is, can not reflect complete possible bandwidth, because this needs test environment to approach desirable wireless environment when the Mean Speed in a second is most.And larger variation often occurs taking Millisecond as unit for wireless environment in reality, above-mentioned ecotopia can not reach.
And the PBM of DingLi samples (in LTE, sample unit is 8ms) according to the very short time interval, so just can reach or approach very much maximum bandwidth.This reason just, the method for contrast based on FTP, the PBM of Dingli can provide the assessment of more accurate available bandwidth.
Shown in Fig. 5, the present invention is through the actual test to three equipment, and wherein an operation DingLi PBM tests, and an operation FTP downloads, also has an operation FTP to upload.Three equipment are arranged in same community, and network and terminal configuration are LTE/20MHZ/1TB/3 class UE, by flow the unknown.As shown in the figure, curve 1 represents the downlink bandwidth in PBM test, and curve 2 is the upstream bandwidth in PBM test, and curve 3 represents FTP downloading-running result, and curve 4 represents that FTP uploads operation result.As we know from the figure, the available bandwidth that FTP and PBM test has very large corresponding relation.But it is only suitable under the same conditions that Dingli PBM and FTP download measurement, comprise same RF, resource distribution and pass through flow.Under physical condition, PBM test has obvious advantage, and its intensity of infestation is lower, therefore, in the time of concrete test, existing network user's network is experienced to impact less.
The present invention also provides a kind of available bandwidth measurement system of wireless network, comprises PBM client and PBM service end, wherein:
Described PBM client, at interval of identical measuring period, sends upstream packet chain to PBM service end short pulse formula;
Described PBM service end is for receiving after upstream packet chain to PBM client short pulse formula reflection downlink grouped chain;
Described PBM client is also for receiving automatic acquisition of scientific information upstream and downstream bandwidth according to upstream packet chain, downlink grouped chain and termination;
Wherein, described termination is collected mail and cease the reception information generating for client in the time being received downlink grouped chain.
Described upstream packet chain and downlink grouped chain all include continuous packet, and the number of packet and bag size are adjusted according to the wireless network environment of current Real-Time Monitoring and terminal capability grade automatic dynamic.
Described PBM client is collected mail and is ceased all right automatic acquisition up-downgoing time delay, up-downgoing number of dropped packets, up-downgoing packet loss according to upstream packet chain, downlink grouped chain and termination.
Described upstream packet chain comprise uplink packet transmitting time with information, up transmission bag number, descending should reflection wrapped number and bag size, described downlink grouped chain comprise downstream packets transmitting time with information, service end is received first, the actual uplink packet number of receiving of last uplink packet time and service end, the described termination breath of collecting mail comprises that client receives first, the actual downstream packets number of receiving of last downstream packets time and client, upstream bandwidth=(wrapping the actual uplink packet number of receiving of big or small * 8* service end)/(when service end is received last uplink packet, m-service end is received first uplink packet time) that client is calculated according to the above information, described downlink bandwidth=(wrapping the actual downstream packets number of receiving of big or small * 8* client)/(when client is received last downstream packets, m-client is received first downstream packets time), when described uplink time delay=service end is received last uplink packet, m-uplink packet is finally wrapped transmitting time, m-descending last bag transmitting time when described descending time delay=client is received last downstream packets, described up number of dropped packets=up transmission bag number-service end is received uplink packet number, the actual downstream packets number of receiving of described descending number of dropped packets=descending transmission bag number-client, described up packet loss=up number of dropped packets/uplink packet number, described descending packet loss=descending number of dropped packets/downstream packets number.
The specific implementation of described system is with reference to content described in above method, and the client in system of the present invention and service end can realize object of the present invention completely according to the content in described method.
The above, be preferred embodiment of the present invention, and the present invention is not limited to above-mentioned execution mode, as long as it reaches technique effect of the present invention with identical means, all should belong to protection scope of the present invention.
Claims (12)
1. an availability bandwidth measurement method for wireless network, is characterized in that, comprising:
At interval of identical measuring period, send upstream packet chain by client to service end short pulse formula, service end receives the backward client short pulse of upstream packet chain formula reflection downlink grouped chain;
Client is received automatic acquisition of scientific information upstream and downstream bandwidth according to upstream packet chain, downlink grouped chain and termination;
Wherein, described termination is collected mail and cease the reception information generating for client in the time being received downlink grouped chain.
2. method according to claim 1, it is characterized in that, described upstream packet chain and downlink grouped chain all include continuous packet, and the number of packet and bag size are adjusted according to the wireless network environment of current Real-Time Monitoring and terminal capability grade automatic dynamic.
3. method according to claim 2, is characterized in that, described packet is UDP bag.
4. method according to claim 1, is characterized in that, described client is PBM client, and described service end is PBM service end.
5. according to the arbitrary described method of claim 1-4, it is characterized in that, described client is collected mail and is ceased all right automatic acquisition up-downgoing time delay, up-downgoing number of dropped packets, up-downgoing packet loss according to upstream packet chain, downlink grouped chain and termination.
6. method according to claim 5, it is characterized in that, described upstream packet chain comprise uplink packet transmitting time with information, up transmission bag number, descending should reflection wrapped number and bag size, described downlink grouped chain comprise downstream packets transmitting time with information, service end is received first, the actual uplink packet number of receiving of last uplink packet time and service end, the described termination breath of collecting mail comprises that client receives first, the actual downstream packets number of receiving of last downstream packets time and client, upstream bandwidth=(wrapping the actual uplink packet number of receiving of big or small * 8* service end)/(when service end is received last uplink packet, m-service end is received first uplink packet time) that client is calculated according to the above information, described downlink bandwidth=(wrapping the actual downstream packets number of receiving of big or small * 8* client)/(when client is received last downstream packets, m-client is received first downstream packets time), when described uplink time delay=service end is received last uplink packet, m-uplink packet is finally wrapped transmitting time, m-descending last bag transmitting time when described descending time delay=client is received last downstream packets, described up number of dropped packets=up transmission bag number-service end is received uplink packet number, the actual downstream packets number of receiving of described descending number of dropped packets=descending transmission bag number-client, described up packet loss=up number of dropped packets/uplink packet number, described descending packet loss=descending number of dropped packets/downstream packets number.
7. method according to claim 1, is characterized in that, automatically configure described measuring period according to different wireless environments, and acquiescence is 0.5 second measuring period.
8. method according to claim 2, is characterized in that, the packet structure in described up-downgoing packet train is based on TWAMP protocol extension.
9. an available bandwidth measurement system for wireless network, comprises PBM client and PBM service end, it is characterized in that:
Described PBM client, at interval of identical measuring period, sends upstream packet chain to PBM service end short pulse formula;
Described PBM service end is for receiving after upstream packet chain to PBM client short pulse formula reflection downlink grouped chain;
Described PBM client is also for receiving automatic acquisition of scientific information upstream and downstream bandwidth according to upstream packet chain, downlink grouped chain and termination;
Wherein, described termination is collected mail and cease the reception information generating for client in the time being received downlink grouped chain.
10. system according to claim 9, it is characterized in that, described upstream packet chain and downlink grouped chain all include continuous packet, and the number of packet and bag size are adjusted according to the wireless network environment of current Real-Time Monitoring and terminal capability grade automatic dynamic.
11. according to the system described in claim 9 or 10, it is characterized in that, described PBM client is collected mail and ceased all right automatic acquisition up-downgoing time delay, up-downgoing number of dropped packets, up-downgoing packet loss according to upstream packet chain, downlink grouped chain and termination.
12. according to the system described in claim 9 or 10, it is characterized in that, described upstream packet chain comprise uplink packet transmitting time with information, up transmission bag number, descending should reflection wrapped number and bag size, described downlink grouped chain comprise downstream packets transmitting time with information, service end is received first, the actual uplink packet number of receiving of last uplink packet time and service end, the described termination breath of collecting mail comprises that client receives first, the actual downstream packets number of receiving of last downstream packets time and client, upstream bandwidth=(wrapping the actual uplink packet number of receiving of big or small * 8* service end)/(when service end is received last uplink packet, m-service end is received first uplink packet time) that client is calculated according to the above information, described downlink bandwidth=(wrapping the actual downstream packets number of receiving of big or small * 8* client)/(when client is received last downstream packets, m-client is received first downstream packets time), when described uplink time delay=service end is received last uplink packet, m-uplink packet is finally wrapped transmitting time, m-descending last bag transmitting time when described descending time delay=client is received last downstream packets, described up number of dropped packets=up transmission bag number-service end is received uplink packet number, the actual downstream packets number of receiving of described descending number of dropped packets=descending transmission bag number-client, described up packet loss=up number of dropped packets/uplink packet number, described descending packet loss=descending number of dropped packets/downstream packets number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410102430.4A CN103905272A (en) | 2014-03-19 | 2014-03-19 | Available bandwidth measuring method and system of wireless network |
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| CN106341738A (en) * | 2015-07-08 | 2017-01-18 | 杭州海康威视数字技术股份有限公司 | Streaming media network transmission bandwidth calculation method, server and system |
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| CN113872870A (en) * | 2020-06-30 | 2021-12-31 | 华为技术有限公司 | Method and related apparatus for controlling network congestion |
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