CN109842556A - Bandwidth determining method, router and terminal device - Google Patents
Bandwidth determining method, router and terminal device Download PDFInfo
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Abstract
This application discloses a kind of bandwidth determining method, router and terminal devices.Wherein, this method comprises: obtaining the link parameter of at least one link, the link parameter includes at least one in protocol overhead, channel seizure ratio, retransmission rate, link transmission rate and link receiving velocity；The remaining bandwidth of the link is determined according to the link parameter of each link；Instruction message is sent to terminal device, the instruction message is used to indicate the remaining bandwidth of each link at least one link.Using the application, facilitate improving data transmission efficiency, avoid packet loss, to promote the reliability of data transmission.
Description
Technical field
This application involves field of communication technology more particularly to a kind of bandwidth determining methods, router and terminal device.
Background technique
With the development of wireless communication technique, router is used widely, and terminal device can be by wireless communication
Router in system carries out data transmission.In the access or use process of router, often it is related to selecting link access
Or the case where switching, for example the transmission quality of link is measured because having not been able to accuracy when starting access, and selected a matter
Poor link is measured, cause in data transmission procedure packet loss more or is handled up low, customer service is impacted, it is therefore desirable to cut
Change link；For another example, when breaking or interfering larger occur in a certain link, other one better chain road need to be switched to.
When selecting link to be accessed or switched, presently mainly sentenced according to the intensity of the signal received
It is disconnected, and then the strong link of selection signal intensity switches over, or be directly connected to last time according to the link information of memory and connected
Link accessed.However, signal strength does not have comparativity, although such as the corresponding signal strength of a certain link it is relatively strong
Link is busy, it is clear that is not suitable for being switched to chain road；In addition, the mode for being directly accessed the link that last time connected also is not examined
Measuring link, whether the link is busy if appropriate for access instantly.Therefore, it is connect if link is selected to be attached in the manner described above
Enter or switch, it is low to may cause data transmission efficiency, or even packet loss occurs, causes data transmission unreliable.
Summary of the invention
The embodiment of the invention provides a kind of bandwidth determining method, router and terminal device, help to promote data biography
Defeated efficiency, avoids packet loss, to promote the reliability of data transmission.
On the one hand, the embodiment of the invention provides a kind of bandwidth determining methods, comprising: router obtains at least one link
Link parameter；The remaining bandwidth of the link is determined according to the link parameter of each link.Wherein, which may include
At least one of in protocol overhead, channel seizure ratio, retransmission rate, link transmission rate and link receiving velocity.So as to root
The link carried out data transmission, such as selection remaining bandwidth maximum are determined according to remaining bandwidth, that is, maximum available bandwidth of each link
Link carry out data transmission.Optionally, router can also send instruction message to terminal device, and the instruction message is for referring to
The remaining bandwidth for showing each link at least one link enables terminal device to be indicated according to the instruction message each
The remaining bandwidth of link determines the link carried out data transmission.This helps to improving data transmission efficiency, avoids packet loss, from
And promote the reliability of data transmission.
In a kind of possible design, router can also in acquisition system all links link connection state, the link
Connection status may include connected status and not-connected status；Wherein, which may include link in all links
Connection status is in the link of connected status.That is, active router can be obtained only when obtaining the link parameter of link
The link parameter of the link in connected status is taken, and then determines the remaining bandwidth of the link in connected status, with
Convenient for selecting the link for carrying out data transmission from the link that this has connected.This reduces cost of device, and into one
Step improves the reliability of link selection.
In a kind of possible design, which determines the remaining bandwidth of the link, can
With specifically: the link parameter is smoothed according to preset smoothing processing rule；After being smoothed
The link parameter of each link calculates the remaining bandwidth of the link.So as to further promote the reliability of link selection.
In a kind of possible design, which may include uplink remaining bandwidth, which is uplink
Link；And/or the remaining bandwidth may include downlink remaining bandwidth, which is downlink.
On the other hand, the embodiment of the invention also provides a kind of bandwidth determining methods, comprising: terminal device receiving router
The instruction message of transmission, the instruction message are used to indicate the remaining bandwidth of each link at least one link；Extremely according to this
The remaining bandwidth of each link, determines the link transmitted for data from least one link in a few link.
This helps to improving data transmission efficiency, avoids packet loss, to promote the reliability of data transmission.
In a kind of possible design, the remaining bandwidth according to each link at least one link, from this to
The link transmitted for data is determined in a few link, it can be with specifically: determine residue from least one link
The maximum link of bandwidth, and the maximum link of the remaining bandwidth is determined as to be used for the link of data transmission.That is, terminal
Equipment can select the maximum link of remaining bandwidth, that is, maximum available bandwidth to carry out data transmission, to promote data from each link
The reliability of transmission.
In a kind of possible design, which may include uplink remaining bandwidth, which is uplink
Link；And/or the remaining bandwidth may include downlink remaining bandwidth, which is downlink.It wherein, if should
Remaining bandwidth includes uplink remaining bandwidth, and terminal device can choose the maximum link of uplink remaining bandwidth for carrying out data biography
It is defeated；If the remaining bandwidth includes downlink remaining bandwidth, terminal device can choose the maximum link of downlink remaining bandwidth and be used for
Carry out data transmission；If the remaining bandwidth of instruction message instruction includes uplink remaining bandwidth and downlink remaining bandwidth, terminal
Equipment can choose the maximum link of the sum of uplink remaining bandwidth and downlink remaining bandwidth for carrying out data transmission.
Another aspect, the embodiment of the invention also provides a kind of router, which, which has, realizes above method example
The function of middle router behavior.The function can also execute corresponding software realization by hardware realization by hardware.
The hardware or software include one or more units corresponding with above-mentioned function or module.
It may include processing unit and communication unit in the structure of router in a kind of possible design, the processing is single
Member is configured as that router is supported to execute corresponding function in the above method.The communication unit is for supporting router and other
Communication between equipment.The router can also include storage unit, and the storage unit is used to couple with processing unit,
Save the necessary program instruction of router and data.As an example, processing unit can be processor, communication unit can be receipts
Device is sent out, storage unit can be memory.
Another aspect, the embodiment of the present invention provide a kind of terminal device, which, which has, realizes above method example
The function of middle terminal device behavior.The function it is real can also to execute corresponding software by hardware realization by hardware
It is existing.The hardware or software include one or more units corresponding with above-mentioned function or module.
It include communication unit and processing unit in the structure of terminal device in a kind of possible design, the processing is single
Member is configured as that terminal device is supported to execute corresponding function in the above method.The communication unit for support terminal device with
Communication between other equipment.The terminal device can also include storage unit, and the storage unit is used for and processing unit
Coupling saves the necessary program instruction of terminal device and data.As an example, processing unit can be processor, communication unit
Member can be transceiver, and storage unit can be memory.
Another aspect, the embodiment of the invention provides a kind of communication system, the system include above-mentioned aspect router and/
Or terminal device.In alternatively possible design, which can also include in scheme provided in an embodiment of the present invention and should
The other equipment that router or terminal device interact.
Another aspect, the embodiment of the invention provides a kind of computer storage mediums, for being stored as above-mentioned router institute
Computer software instructions comprising for executing program designed by above-mentioned aspect.
Another aspect, the embodiment of the invention provides a kind of computer storage mediums, for being stored as above-mentioned terminal device
Computer software instructions used comprising for executing program designed by above-mentioned aspect.
Another aspect, present invention also provides a kind of computer program products including instruction, when it is transported on computers
When row, so that computer executes method described in above-mentioned various aspects.
Another aspect, this application provides a kind of chip systems, which includes processor, for supporting router
Function involved in above-mentioned aspect is realized, for example, for example generating or handling data and/or letter involved in the above method
Breath.In a kind of possible design, the chip system further includes memory, the memory, for saving router necessity
Program instruction and data.The chip system, can be made of chip, also may include chip and other discrete devices.
Another aspect, this application provides a kind of chip systems, which includes processor, for supporting terminal to set
It is standby to realize function involved in above-mentioned aspect, for example, for example receiving or handling data and/or letter involved in the above method
Breath.In a kind of possible design, the chip system further includes memory, and the memory must for saving terminal device
The program instruction and data wanted.The chip system, can be made of chip, also may include chip and other discrete devices.
This application claims technical solution in, router can by obtain link protocol overhead, channel account for
With link parameters such as rate, retransmission rate, link transmission rate and link receiving velocities, the remaining bandwidth of outgoing link is determined, in order to
The link for carrying out data transmission is selected from link according to the link bandwidth of link, this helps to promote data transmission
Efficiency avoids packet loss, to promote the reliability of data transmission.
Detailed description of the invention
Technical solution in order to illustrate the embodiments of the present invention more clearly or in background technique below will be implemented the present invention
Attached drawing needed in example or background technique is illustrated.
Fig. 1 is a kind of application scenario diagram of communication system provided in an embodiment of the present invention；
Fig. 2 is a kind of flow diagram of bandwidth determining method provided in an embodiment of the present invention；
Fig. 3 is the flow diagram of another bandwidth determining method provided in an embodiment of the present invention；
Fig. 4 is a kind of interaction schematic diagram of bandwidth determining method provided in an embodiment of the present invention；
Fig. 5 a is a kind of physical layer packet transmission time structural schematic diagram provided in an embodiment of the present invention；
Fig. 5 b is another physical layer packet transmission time structural schematic diagram provided in an embodiment of the present invention；
Fig. 6 is a kind of structural schematic diagram of router provided in an embodiment of the present invention；
Fig. 7 is the structural schematic diagram of another router provided in an embodiment of the present invention；
Fig. 8 is the structural schematic diagram of another router provided in an embodiment of the present invention；
Fig. 9 is a kind of structural schematic diagram of terminal device provided in an embodiment of the present invention；
Figure 10 is the structural schematic diagram of another terminal device provided in an embodiment of the present invention；
Figure 11 is the structural schematic diagram of another terminal device provided in an embodiment of the present invention.
Specific embodiment
The embodiment of the present invention is described with reference to the attached drawing in the embodiment of the present invention.
In this application, terminal device is a kind of equipment with communication function, is referred to as terminal, may include
Handheld device, mobile unit, wearable device with wireless communication function calculate equipment or are connected to radio modem
Other processing equipments etc..User equipment can be called different titles in different networks, such as: terminal, UE are mobile
Platform, subscriber unit, platform, cellular phone, personal digital assistant, radio modem, wireless telecom equipment, handheld device,
Laptop computer, wireless phone, wireless local loop platform etc..The user equipment can be wireless terminal or catv terminal.The nothing
Line terminal can be directed to user and provide the equipment of voice and/or data connectivity, and the hand-held with wireless connecting function is set
Standby or other processing equipments for being connected to radio modem etc..
The application scenarios of the application are introduced below, referring to Figure 1, Fig. 1 is one kind provided in an embodiment of the present invention
The architecture diagram of communication system.Specifically, as shown in Figure 1, may include terminal device, active router and at least one in the communication system
It is a from router.Terminal device, generally there are multilinks between router and active router, can if networking mode difference
Corresponding there are multilinks, when needing to carry out information transmission, link need to be selected from the multilink to carry out information transmission.
For example, router networking mode includes Wireless Fidelity (Wireless Fidelity, abbreviation: Wi-Fi), 2.4G networking, 5G group
Net, PLC networking etc., each networking mode can correspond at least one link.
In this application, the link being related to can refer to uplink, can also refer to downlink.
This application discloses a kind of bandwidth determining method, router and terminal devices, facilitate improving data transmission efficiency,
Packet loss is avoided, to promote the reliability of data transmission.It is described in detail individually below.
Fig. 2 is referred to, Fig. 2 is a kind of flow diagram of bandwidth determining method provided in an embodiment of the present invention.Specifically,
As shown in Fig. 2, the bandwidth determining method of the embodiment of the present invention may comprise steps of:
201, the link parameter of at least one link is obtained, which includes protocol overhead, channel seizure ratio, re-transmission
At least one of in rate, link transmission rate and link receiving velocity.
Specifically, the technical solution of the embodiment of the present invention can be applied particularly in router, or it can be applied to communication system
In other autonomous devices in system, the embodiment of the present invention is without limitation.Optionally, which can be the master in communication system
Router, the slave router being also possible in the communication system.It is illustrated by taking active router as an example below.
202, the remaining bandwidth of the link is determined according to the link parameter of each link.
Specifically, protocol overhead, channel seizure ratio, retransmission rate, link that active router acquires each link send speed
After the link parameters such as rate and/or link receiving velocity, the tape remaining of each link can be determined according to the link parameter
Width namely maximum available bandwidth, in order to select link to carry out data transmission from each link according to the remaining bandwidth, to be promoted
The reliability of link selection, and then promote communication reliability.
Optionally, in the remaining bandwidth for determining link, which can be smoothed, further according to smooth place
Link parameter after reason calculates the remaining bandwidth of link, further to promote the reliability of link selection.
203, instruction message is sent to terminal device, which is used to indicate each chain at least one link
The remaining bandwidth on road.
Optionally, active router can be sent to terminal device for referring to after the remaining bandwidth for determining each link
The instruction message or active router for showing the remaining bandwidth of each link are to the remaining bandwidth for sending each link from router
Message, then the message of the remaining bandwidth from sending each link from router to terminal device, for example referred to by the instruction message
Show, the application is without limitation.
Further alternative, before the link parameter for obtaining at least one link, active router can also be in acquisition system
The link connection state of all links, the link connection state include connected status and not-connected status；Wherein, this at least one
Link includes the link that link connection state is in connected status in all links.That is, active router is obtaining
When the link parameter of link, the link parameter of the link in connected status can be only obtained, is not connected without obtaining to be in
The link parameter of the link of state is connect, and then selects the link for carrying out data transmission from the link that this has connected, this
Cost of device is just reduced, and further improves the reliability of link selection.
Optionally, which may include uplink remaining bandwidth, then at least one link is uplink；And/or
The remaining bandwidth may include downlink remaining bandwidth, then at least one link is downlink.
In embodiments of the present invention, router can by obtain the protocol overhead of link, channel seizure ratio, retransmission rate,
The link parameters such as link transmission rate, link receiving velocity, determine the remaining bandwidth of outgoing link, and can be by terminal device
The instruction message for being used to indicate the remaining bandwidth is sent, in order to which terminal device is selected according to the remaining bandwidth for carrying out data
The link of transmission, this helps to the reliability for promoting link selection, and improving data transmission efficiency avoids packet loss, to be promoted
The reliability of data transmission.
Fig. 3 is referred to, Fig. 3 is the flow diagram of another bandwidth determining method provided in an embodiment of the present invention.Specifically
, the technical solution of the embodiment of the present invention can be applied particularly in terminal device.As shown in figure 3, the bandwidth of the embodiment of the present invention
The method of determination may comprise steps of:
301, the instruction message that receiving router is sent, the instruction message are used to indicate each chain at least one link
The remaining bandwidth on road.
Optionally, which can be active router and is sent to terminal device, be also possible to send from router
To terminal device, for example it can be each remaining bandwidth, etc. for sending itself to terminal device respectively from router, this Shen
Please without limitation.
302, it according to the remaining bandwidth of each link at least one link, is determined from least one link
Link for data transmission.
Optionally, terminal device is according to the remaining bandwidth of each link at least one link, from this at least one
The link transmitted for data is determined in link, it can be with specifically: determine remaining bandwidth most from least one link
Big link, and the maximum link of the remaining bandwidth is determined as to be used for the link of data transmission.That is, terminal device can
The maximum link of remaining bandwidth is selected to carry out data transmission from the remaining bandwidth of each link, i.e., in maximum available bandwidth, thus
Promote the reliability of data transmission.Alternatively, further alternative, terminal device may also be combined with the industry for the data for currently needing to transmit
Business priority, carries out link selection according to the remaining bandwidth of each link；For example, for the data of the first priority, terminal is set
Standby that the maximum link of remaining bandwidth may be selected to carry out data transmission, for the data of the second priority, terminal device be may be selected
Time high link of remaining bandwidth carries out data transmission, etc., and the embodiment of the present invention is without limitation.Wherein, first priority
Higher than second priority.
Optionally, which may include uplink remaining bandwidth, then at least one link is uplink；And/or
The remaining bandwidth may include downlink remaining bandwidth, then at least one link is downlink.Specifically, if the remaining bandwidth
Including uplink remaining bandwidth, terminal device can choose the maximum link of uplink remaining bandwidth for carrying out data transmission, i.e., on
Row major；If the remaining bandwidth includes downlink remaining bandwidth, terminal device can choose the maximum link of downlink remaining bandwidth
For carrying out data transmission, that is, descend row major；If the remaining bandwidth includes uplink remaining bandwidth and downlink remaining bandwidth, terminal
Equipment can choose the maximum link of the sum of uplink remaining bandwidth and downlink remaining bandwidth for carrying out data transmission.
In embodiments of the present invention, terminal device can be by obtaining the corresponding remaining bandwidth of each link, such as reception road
By the instruction message for the remaining bandwidth for being used to indicate each link that device is sent, and then selected according to the remaining bandwidth for carrying out
The link of data transmission, this helps to the reliability for promoting link selection, and improving data transmission efficiency avoids packet loss, thus
Promote the reliability of data transmission.
Fig. 4 is referred to, Fig. 4 is the interaction schematic diagram of another bandwidth determining method provided in an embodiment of the present invention.Specifically
, as shown in figure 4, the bandwidth determining method of the embodiment of the present invention may comprise steps of:
401, in router acquisition system all links link connection state.
402, router obtains the link parameter that link connection state is at least one link of connected status.
Wherein, which may include connected status and not-connected status.Optionally, active router can be real-time
The connection status of link is detected, and can only filter out the link that link connection state is in connected status, and then connected from this
Link is selected in the link connect, to reduce cost of device.
Further alternative, which may include all links in connected status.Alternatively, can be with
Part of links is filtered out from all links in connected status in conjunction with other parameters, such as can also be by obtaining signal
Intensity, and further screening signal strength is higher than the chain of preset strength threshold value from all links in connected status
Road, etc. is not listed one by one herein.
403, router is smoothed the link parameter according to preset smoothing processing rule, and flat according to carrying out
The link parameter of sliding treated each link calculates the remaining bandwidth of the link.
Optionally, which may include the protocol overhead, channel seizure ratio, retransmission rate, link transmission rate of link
With the parameters such as link receiving velocity.Further, it after getting each link parameter, can also be advised according to preset smoothing processing
Then the link parameter of acquisition is smoothed, for example, in a manner of being averaged or Alpha filtering etc. modes, for
The mode smoothly gone out, the application is without limitation.For example, in the smoothing processing mode being averaged as an example, link physical transmitting-receiving
Rate can be sampled by cycle T, count newest n times result, it is assumed that sampled result is to receive rate Rrate (1), Rrate
(2) ..., Rrate (n) is sent out rate Trate (1), Trate (2) ..., Trate (n), then the link object after being smoothed
Managing receiving velocity can be with are as follows:
Link physical transmission rate after being smoothed can be with are as follows:
Further, the Wi-Fi channel occupancy for channel occupancy (utilization) rate such as the link of Wi-Fi networking mode
Rate, it is assumed that sampled by cycle T, channel seizure ratio sampled result Utility (1), Utility (2) ..., Utility (n), then
Wi-Fi channel seizure ratio after being smoothed can be with are as follows:
Further, for the retransmission rate of link, it is assumed that it is sampled by cycle T, the retransmission rate sampled result R (1) of channel,
R (2) ..., R (n), then retransmission rate after being smoothed can be with are as follows:
Further, active router can also calculate the protocol overhead of outgoing link, the protocol overhead of different wireless communication agreement
It is different.For example, as shown in figure 5a and 5b, the physics respectively under different scenes passes by taking the theoretical protocol overhead of 802.11n as an example
Defeated time structure schematic diagram.Assuming that transmission time t refers to the transmission time of entire physical layer packet, it is t=T1+T2, in which:
Wherein, payload rate are as follows:
Assuming that α is protocol overhead:
Wherein, Lpkt, to be polymerized to payload packet size, can specifically be learnt by analyzing packet capturing data.For example, original
When wrapping a length of 512bytes, polymerization packet number polymerization regularity is: MCS0-MCS3 is according to regular time length aggregate, about
1.8ms；MCS4-MCS7 polymerization number is each about 24, and when can be converted into different MCS orders, it is big thus to estimate payload packet
It is small.LM+L, can be medium access control after polymerization (Media Access Control, abbreviation: MAC) and logic link control
The packet header size of (Logical Link Control, abridge LLC), and can be analyzed according to packet capturing data and obtain each MAC packet
MAC layer and LLC expense are 94bytes, and payload is divided the number for MAC layer packet to be about original packet number by chip algorithm
2/3 times, estimation result is shown in following table one.Rphy, can be physical layer rate, as shown in following table one.Tpre, can be physical layer
The time of lead code, for example, the lead code singly flowed is 36us according to 802.11n agreement.Tbackoff, can be Backoff time, tool
Body can analyze the type of service that AP is issued by packet capturing data and determine, for example be VI business, i.e. T in T1 in Fig. 5 a and 5bVIbackoff,
It is BE business, i.e. T in T2 in Fig. 5 a and 5bBEbackoff；According to 802.11n agreement, the average time of AC_VI rollback can be estimated
It can be 70us, the average time that AC_BE retracts can be 115us, be not listed one by one herein.TBA, can be Block ACK frame
Time, can be analyzed and be learnt according to packet capturing data, for example, under the scene, the data transmission period of Block ACK is 32*8/24
About 11us, in addition the time 16us of lead code time 36us and a SIFS, entire BA frame time is about 63us.Tsifs, short
Away from, under the scene, according to 802.11n agreement be 16us.TRTS/CTS, to open RTS/CTS (Request To Send/Clear
To Send) time for listening to, under the scene, including RTS data transmission period 20*8/12 about 13us, in addition lead code and one
A SIFS time about 65us；CTS data transmission period about 14*8/12 about 9us, and lead code and a SIFS time be
61us, therefore the unlatching RTS/CTS wastage in bulk or weight time is about 126us.TTCP ACK, i.e., L in above formulaTCPACK_kt, TCP is fed back for STA
The time and competitive channel time of ACK can be analyzed by packet capturing data and be learnt, time of corresponding different MCS, TCP ACK can be as
Shown in table one.
Further, the end STA such as terminal device transmission data equally have SIFS 16us, BA 57us, a RTS/CTS
126us, physical layer preamble code time 36us, total 360us.Transmitting data time can be different according to different TCP layer group packets, if group
Packet number is n, then transmission time is (100*8/216) * n us.
Table one
Further, after calculating each link parameter, active router can calculate the remaining bandwidth of each link, namely
Calculate the maximum available bandwidth of each link.Wherein, which may include uplink remaining bandwidth and/or downlink remaining bandwidth.
For example, uplink remaining bandwidth BWuIt can be with are as follows:
BWu=(1- α) * Rr* (1-R) * (1-U)
Downlink remaining bandwidth BWdIt can be with are as follows:
BWd=(1- α) * Rt* (1-R) * (1-U)
404, router sends instruction message to terminal device, which is used to indicate at least one link often
The remaining bandwidth of one link.
Optionally, the information for determining each remaining bandwidth can be sent to accordingly from router, from routing by active router
Device can safeguard the remaining bandwidth of corresponding link, for example be safeguarded in the form of a list, and can send to terminal device
The information of the remaining bandwidth.
405, terminal device determines the maximum link of remaining bandwidth according to the instruction message from least one link,
And the maximum link of the remaining bandwidth is determined as to be used for the link of data transmission.
Specifically, terminal after getting the message of remaining bandwidth of each link, can be selected surplus from each link
The remaining maximum link of bandwidth is as the link for being currently used in data transmission, with improving data transmission efficiency and reliability.For example, such as
Fruit uses uplink priority principle, and terminal device can choose the maximum link of uplink remaining bandwidth for carrying out data transmission (this
When, which can indicate uplink remaining bandwidth, can also indicate that uplink remaining bandwidth and downlink remaining bandwidth)；If adopted
With downlink preferential principle, terminal device can choose the maximum link of downlink remaining bandwidth for carry out data transmission (at this point,
The instruction message can indicating downlink remaining bandwidth, can also indicate that uplink remaining bandwidth and downlink remaining bandwidth)；Alternatively, this refers to
That shows message instruction can be the sum of the uplink remaining bandwidth and downlink remaining bandwidth, then terminal device can choose the instruction and disappear
The maximum link of remaining bandwidth of breath instruction is for carrying out data transmission；Alternatively, instruction message instruction is uplink tape remaining
Wide and downlink remaining bandwidth, then terminal device can choose the maximum link of the sum of uplink remaining bandwidth and downlink remaining bandwidth and use
In carrying out data transmission, etc., the embodiment of the present invention is without limitation.
Optionally, which may also include the corresponding link information of remaining bandwidth, such as principal and subordinate's Router Distinguisher,
In order to which terminal device carries out data transmission after selecting link, thus improving data transmission efficiency.
It is further alternative, if environmental disturbances become larger or wireless networking disconnects (becoming not-connected status), router
It can also carry out evaluating the corresponding link information of maximum available bandwidth after all channel scanning and be sent to terminal device, thus terminal
Equipment can be according to the corresponding link information replacement link of the maximum available bandwidth (or being known as switching channel), i.e., by current ink
It replaces to the link of the corresponding link information instruction of the maximum available bandwidth.
In embodiments of the present invention, router can by obtain the protocol overhead of link, channel seizure ratio, retransmission rate,
The link parameters such as link transmission rate, link receiving velocity, determine the remaining bandwidth of outgoing link, and can be by terminal device
The instruction message for being used to indicate the remaining bandwidth is sent, enables terminal device by obtaining the corresponding tape remaining of each link
Width, such as the instruction message of the remaining bandwidth for being used to indicate each link that receiving router is sent, and then according to the remaining bandwidth
Select the link for carrying out data transmission.The technical solution of the embodiment of the present invention can be by comprehensively considering wireless channel
Service condition, including transmitting-receiving rate, channel seizure ratio etc. retransmit situation, different channel radios caused by interfering under current environment
Expense, that is, protocol overhead not the square one for believing agreement, is finally calculated the maximum available bandwidth of link, so that terminal device
Link selection is carried out according to the maximum available bandwidth of each link, this helps to the reliability for promoting link selection, promotes number
According to efficiency of transmission, packet loss is avoided, to promote the reliability of data transmission.
Above method embodiment is all to the bandwidth determining method of the application for example, description to each embodiment
It all emphasizes particularly on different fields, there is no the part being described in detail in some embodiment, reference can be made to the related descriptions of other embodiments.
Fig. 6 shows a kind of possible structural schematic diagram of router involved in above-described embodiment, refering to Fig. 6 institute
Show, the router 600 can include: processing unit 601 and communication unit 602.Wherein, these units can execute the above method and show
The corresponding function of router in example, for example, processing unit 601, for obtaining the link parameter of at least one link, the link
Parameter includes at least one in protocol overhead, channel seizure ratio, retransmission rate, link transmission rate and link receiving velocity；Institute
Processing unit 601 is stated, is also used to determine the remaining bandwidth of the link according to the link parameter of each link；Communication unit 602,
For sending instruction message to terminal device, the instruction message is used to indicate each link at least one link
Remaining bandwidth.
Optionally, the processing unit 601, it may also be used for the link connection state of all links in acquisition system, it is described
Link connection state includes connected status and not-connected status.Wherein, at least one link includes chain in all links
Road connection status is in the link of connected status.
Optionally, the processing unit is specifically used for carrying out the link parameter according to preset smoothing processing rule
Smoothing processing calculates the remaining bandwidth of the link according to the link parameter of each link after being smoothed.
Optionally, the remaining bandwidth includes uplink remaining bandwidth, and at least one link is uplink；And/or
The remaining bandwidth includes downlink remaining bandwidth, and at least one link is downlink.
It should be noted that being schematical, only a kind of logic function to the division of unit in the embodiment of the present invention
It divides, there may be another division manner in actual implementation.Each functional unit in the embodiment of the present invention can integrate at one
In processing unit, it is also possible to each unit and physically exists alone, a list can also be integrated in two or more units
In member.Above-mentioned integrated unit both can take the form of hardware realization, can also realize in the form of software functional units.
Using integrated unit, Fig. 7 shows the another kind of router involved in above-described embodiment
Possible structural schematic diagram, as shown in fig. 7, the router 700 can include: processing unit 702 and communication unit 703.Processing is single
The movement that member 702 can be used for router carries out control management, for example, processing unit 702 is for supporting router to execute in Fig. 2
Process 201-203, Fig. 4 in process 401-404 etc., and/or for other processes of techniques described herein.Communication
Unit 703 is used to supporting the communication of router Yu other network entities, for example, with Fig. 2 to functional unit shown in Fig. 6 or net
Communication between network entity such as terminal device.Router can also include storage unit 701, for storing the program generation of router
Code and data.
Wherein, processing unit 702 can be processor or controller, such as can be central processing unit (Central
Processing Unit, CPU), general processor, digital signal processor (Digital Signal Processor, DSP),
Specific integrated circuit (Application-Specific Integrated Circuit, ASIC), field programmable gate array
It is (Field Programmable Gate Array, FPGA) or other programmable logic device, transistor logic, hard
Part component or any combination thereof.It may be implemented or execute to combine and various illustratively patrol described in present disclosure
Collect box, module and circuit.The processor is also possible to realize the combination of computing function, such as includes one or more micro- places
Manage device combination, DSP and the combination of microprocessor etc..Communication unit 703 can be transceiver, or can be and be independently arranged
Receiver and transmitter.Storage unit 701 can be memory.
When processing unit 702 is processor, communication unit 703 is transceiver, when storage unit 701 is memory, this hair
Router involved in bright embodiment can be router shown in Fig. 8.
As shown in fig.8, the router 8 can include: processor 802, transceiver 803, memory 801 and bus 804.
Wherein, transceiver 803, processor 802 and memory 801 are connected with each other by bus 804；Bus 804 can be peripheral hardware portion
Part interconnection standards (peripheral component interconnect, abbreviation PCI) bus or expanding the industrial standard structure
(extended industry standard architecture, abbreviation EISA) bus etc..The bus can be divided into address
Bus, data/address bus, control bus etc..Only to be indicated with a thick line in Fig. 8, it is not intended that only one convenient for indicating
Bus or a type of bus.
The step of method in conjunction with described in present disclosure or algorithm can realize in a manner of hardware, can also
It is realized in a manner of being to execute software instruction by processor.Software instruction can be made of corresponding software module, software mould
Block can be stored on random access memory (Random Access Memory, RAM), flash memory, read-only memory (Read
Only Memory, ROM), Erasable Programmable Read Only Memory EPROM (Erasable Programmable ROM, EPROM), electricity can
Erasable programmable read-only memory (Electrically EPROM, EEPROM), register, hard disk, mobile hard disk, CD-ROM
(CD-ROM) or in the storage medium of any other form well known in the art.A kind of illustrative storage medium is coupled to place
Device is managed, to enable a processor to from the read information, and information can be written to the storage medium.Certainly, it stores
Medium is also possible to the component part of processor.Pocessor and storage media can be located in ASIC.In addition, the ASIC can position
In router.Certainly, pocessor and storage media can also be used as discrete assembly and be present in router.
Fig. 9 shows a kind of possible structural schematic diagram of terminal device involved in above-described embodiment, refering to Fig. 9 institute
Show, the terminal device 900 can include: communication unit 901 and processing unit 902.Wherein, these units can execute the above method
The corresponding function of terminal device in example, for example, communication unit 901, for the instruction message that receiving router is sent, the finger
Show that message is used to indicate the remaining bandwidth of each link at least one link；Processing unit 902, it is described at least for basis
The remaining bandwidth of each link in one link determines the link transmitted for data from least one link.
Optionally, the processing unit 902 can be specifically used for determining remaining bandwidth most from least one link
Big link, and the maximum link of the remaining bandwidth is determined as to be used for the link of data transmission.
Optionally, the remaining bandwidth includes uplink remaining bandwidth, and at least one link is uplink；And/or
The remaining bandwidth includes downlink remaining bandwidth, and at least one link is downlink.
It should be noted that being schematical, only a kind of logic function to the division of unit in the embodiment of the present invention
It divides, there may be another division manner in actual implementation.Each functional unit in the embodiment of the present invention can integrate at one
In processing unit, it is also possible to each unit and physically exists alone, a list can also be integrated in two or more units
In member.Above-mentioned integrated unit both can take the form of hardware realization, can also realize in the form of software functional units.
Using integrated unit, Figure 10 shows the another of terminal device involved in above-described embodiment
The possible structural schematic diagram of kind, as shown in Figure 10, the terminal device 1000 can include: processing unit 1002 and communication unit
1003.Processing unit 1002 can be used for the movement to terminal device and carry out control management, for example, processing unit 1002 is for supporting
Terminal device executes the process 405 etc. in process 301-302, Fig. 4 in Fig. 3, and/or for techniques described herein
Other processes.Communication unit 1003 is used to support the communication of terminal device Yu other network entities, such as shows with Fig. 2 into Fig. 9
The communication between functional unit or network entity out.Terminal device can also include storage unit 1001, for storing terminal
The program code and data of equipment.
Wherein, processing unit 1002 can be processor or controller, such as can be central processing unit (Central
Processing Unit, CPU), general processor, digital signal processor (Digital Signal Processor, DSP),
Specific integrated circuit (Application-Specific Integrated Circuit, ASIC), field programmable gate array
It is (Field Programmable Gate Array, FPGA) or other programmable logic device, transistor logic, hard
Part component or any combination thereof.It may be implemented or execute to combine and various illustratively patrol described in present disclosure
Collect box, module and circuit.The processor is also possible to realize the combination of computing function, such as includes one or more micro- places
Manage device combination, DSP and the combination of microprocessor etc..Communication unit 1003 can be transceiver, or can be and be independently arranged
Receiver and transmitter.Storage unit 1001 can be memory.
When processing unit 1002 is processor, communication unit 1003 is transceiver, when storage unit 1001 is memory, this
Terminal device involved in inventive embodiments can be terminal device shown in Figure 11.
Refering to fig. 1 shown in 1, the terminal device 1100 can include: processor 1102, transceiver 1103, memory 1101 with
And bus 1104.Wherein, transceiver 1103, processor 1102 and memory 1101 are connected with each other by bus 1104；Bus
1104 can be Peripheral Component Interconnect standard (peripheral component interconnect, abbreviation PCI) bus or expansion
Open up industrial standard architectures (extended industry standard architecture, abbreviation EISA) bus etc..It is described total
Line can be divided into address bus, data/address bus, control bus etc..Only to be indicated with a thick line in Figure 11, but simultaneously convenient for indicating
Only a bus or a type of bus are not indicated.
The step of method in conjunction with described in present disclosure or algorithm can realize in a manner of hardware, can also
It is realized in a manner of being to execute software instruction by processor.Software instruction can be made of corresponding software module, software mould
Block can be stored on random access memory (Random Access Memory, RAM), flash memory, read-only memory (Read
Only Memory, ROM), Erasable Programmable Read Only Memory EPROM (Erasable Programmable ROM, EPROM), electricity can
Erasable programmable read-only memory (Electrically EPROM, EEPROM), register, hard disk, mobile hard disk, CD-ROM
(CD-ROM) or in the storage medium of any other form well known in the art.A kind of illustrative storage medium is coupled to place
Device is managed, to enable a processor to from the read information, and information can be written to the storage medium.Certainly, it stores
Medium is also possible to the component part of processor.Pocessor and storage media can be located in ASIC.In addition, the ASIC can position
In terminal device.Certainly, pocessor and storage media can also be used as discrete assembly and be present in terminal device.
During realization, each step of the above method can by the integrated logic circuit of the hardware in processor or
The instruction of software form is completed.The step of method in conjunction with disclosed in the embodiment of the present application, can be embodied directly in hardware processor
Execute completion, or in processor hardware and software module combination execute completion.Software module can be located at random storage
Device, flash memory, read-only memory, this fields such as programmable read only memory or electrically erasable programmable memory, register at
In ripe storage medium.The storage medium is located at memory, and processor reads the information in memory, completes in conjunction with its hardware
The step of stating method.To avoid repeating, it is not detailed herein.
It should also be understood that first, second, third, fourth and the various digital numbers that are referred to herein are only for convenience of description
The differentiation of progress is not intended to limit the invention the range of embodiment.
It should be understood that the terms "and/or", only a kind of incidence relation for describing affiliated partner, expression can deposit
In three kinds of relationships, for example, A and/or B, can indicate: individualism A exists simultaneously A and B, these three situations of individualism B.
In addition, character "/" herein, typicallys represent the relationship that forward-backward correlation object is a kind of "or".
It should be understood that magnitude of the sequence numbers of the above procedures are not meant to execute suitable in the various embodiments of the application
Sequence it is successive, the execution of each process sequence should be determined by its function and internal logic, the implementation without coping with the embodiment of the present invention
Process constitutes any restriction.
Those of ordinary skill in the art may be aware that described in conjunction with the examples disclosed in this document various illustrative
Logical block (illustrative logical block) and step (step), can be with electronic hardware or computer software
Combination with electronic hardware is realized.These functions are implemented in hardware or software actually, depending on technical solution
Specific application and design constraint.Professional technician can to each specific application come using distinct methods to realize
The function of description, but this realization is it is not considered that exceed scope of the present application.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In several embodiments provided herein, it should be understood that disclosed system, device, user equipment, function
Energy entity and method, may be implemented in other ways.For example, Installation practice described above is only schematic
, for example, the division of the unit, only a kind of logical function partition, there may be another division manner in actual implementation,
Such as multiple units or components can be combined or can be integrated into another system, or some features can be ignored, or not hold
Row.Another point, shown or discussed mutual coupling, direct-coupling or communication connection can be through some interfaces,
The indirect coupling or communication connection of device or unit can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, each functional unit in each embodiment of the application can integrate in one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.
In the above-described embodiments, can come wholly or partly by software, hardware, firmware or any combination thereof real
It is existing.When implemented in software, it can entirely or partly realize in the form of a computer program product.The computer program
Product includes one or more computer instructions.When loading on computers and executing the computer program instructions, all or
It partly generates according to process or function described in the embodiment of the present invention.The computer can be general purpose computer, dedicated meter
Calculation machine, computer network or other programmable devices.The computer instruction can store in computer readable storage medium
In, or from a computer readable storage medium to the transmission of another computer readable storage medium, for example, the computer
Instruction can pass through wired (such as coaxial cable, optical fiber, number from a web-site, computer, server or data center
User's line (DSL)) or wireless (such as infrared, wireless, microwave etc.) mode to another web-site, computer, server or
Data center is transmitted.The computer readable storage medium can be any usable medium that computer can access or
It is comprising data storage devices such as one or more usable mediums integrated server, data centers.The usable medium can be with
It is magnetic medium, (for example, floppy disk, hard disk, tape), optical medium (for example, DVD) or semiconductor medium (such as solid state hard disk
Solid State Disk (SSD)) etc..
The above, the only specific embodiment of the application, but the protection scope of the application is not limited thereto, it is any
Those familiar with the art within the technical scope of the present application, can easily think of the change or the replacement, and should all contain
Lid is within the scope of protection of this application.
Claims (14)
1. a kind of bandwidth determining method characterized by comprising
The link parameter of at least one link is obtained, the link parameter includes protocol overhead, channel seizure ratio, retransmission rate, chain
At least one of in road transmission rate and link receiving velocity；
The remaining bandwidth of the link is determined according to the link parameter of each link；
Instruction message is sent to terminal device, the instruction message is used to indicate each link at least one link
Remaining bandwidth.
2. the method according to claim 1, wherein the method also includes:
The link connection state of all links in acquisition system, the link connection state include connected status and not connected shape
State；
Wherein, at least one link includes the link that link connection state is in connected status in all links.
3. according to the method described in claim 2, it is characterized in that, the link parameter according to each link determines the chain
The remaining bandwidth on road, comprising:
The link parameter is smoothed according to preset smoothing processing rule；
The remaining bandwidth of the link is calculated according to the link parameter of each link after being smoothed.
4. method according to claim 1-3, which is characterized in that the remaining bandwidth includes uplink tape remaining
Width, at least one link are uplink；And/or
The remaining bandwidth includes downlink remaining bandwidth, and at least one link is downlink.
5. a kind of bandwidth determining method characterized by comprising
The instruction message that receiving router is sent, the instruction message are used to indicate the surplus of each link at least one link
Remaining bandwidth；
According to the remaining bandwidth of each link at least one link, determine to be used for from least one link
The link of data transmission.
6. according to the method described in claim 5, it is characterized in that, described according to each link at least one link
Remaining bandwidth, determined from least one link for data transmit link, comprising:
The maximum link of remaining bandwidth is determined from least one link, and the maximum link of the remaining bandwidth is true
It is set to the link for data transmission.
7. method according to claim 5 or 6, which is characterized in that the remaining bandwidth includes uplink remaining bandwidth, described
At least one link is uplink；And/or
The remaining bandwidth includes downlink remaining bandwidth, and at least one link is downlink.
8. a kind of router characterized by comprising processing unit and communication unit；
The processing unit, for obtaining the link parameter of at least one link, the link parameter includes protocol overhead, channel
At least one of in occupancy, retransmission rate, link transmission rate and link receiving velocity；
The processing unit is also used to determine the remaining bandwidth of the link according to the link parameter of each link；
The communication unit, for sending instruction message to terminal device, the instruction message is used to indicate described at least one
The remaining bandwidth of each link in link.
9. router according to claim 8, which is characterized in that
The processing unit, is also used to the link connection state of all links in acquisition system, and the link connection state includes
Connected status and not-connected status；
Wherein, at least one link includes the link that link connection state is in connected status in all links.
10. router according to claim 9, which is characterized in that
The processing unit, specifically for being smoothed according to preset smoothing processing rule to the link parameter, root
The remaining bandwidth of the link is calculated according to the link parameter of each link after being smoothed.
11. according to the described in any item routers of claim 8-10, which is characterized in that the remaining bandwidth includes uplink residue
Bandwidth, at least one link are uplink；And/or
The remaining bandwidth includes downlink remaining bandwidth, and at least one link is downlink.
12. a kind of terminal device characterized by comprising communication unit and processing unit；
The communication unit, for the instruction message that receiving router is sent, the instruction message is used to indicate at least one chain
The remaining bandwidth of each link in road；
The processing unit, for the remaining bandwidth according to each link at least one link, from described at least one
The link transmitted for data is determined in link.
13. terminal device according to claim 12, which is characterized in that
The processing unit, specifically for determining the maximum link of remaining bandwidth from least one link, and by institute
It states the maximum link of remaining bandwidth and is determined as the link transmitted for data.
14. terminal device according to claim 12 or 13, which is characterized in that the remaining bandwidth includes uplink tape remaining
Width, at least one link are uplink；And/or
The remaining bandwidth includes downlink remaining bandwidth, and at least one link is downlink.
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| CN201711204893.1A CN109842556B (en) | 2017-11-27 | 2017-11-27 | Bandwidth determination method, router and terminal equipment |
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| CN113114521A (en) * | 2021-02-24 | 2021-07-13 | 浙江大华技术股份有限公司 | Link quality judging method, network camera and readable storage medium |
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| CN109842556B (en) | 2021-08-31 |
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