CN104065468B - Data transfer based on multipath, routing resource and device in wireless device - Google Patents
Data transfer based on multipath, routing resource and device in wireless device Download PDFInfo
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Abstract
The invention discloses the data transfer based on multipath, routing resource and device in a kind of wireless device, wherein, data transmission method includes：The received signal strength RSS values of each wireless propagation path in measuring apparatus set of paths；Wherein, the device path set includes the wireless propagation path for respectively possessing data transmission capabilities of the wireless device；Standby survey set of paths is obtained after RSS values are rejected less than the wireless propagation path of setting RSS threshold values from the device path set；The two-way time RTT value in measurement standby each path surveyed in set of paths；RTT values are obtained selecting set of paths from standby the survey in set of paths more than the path of setting RTT threshold values after rejecting；Multi-path data transmission is carried out using each path in the selection set of paths.Using the present invention, Path selection efficiency and real-time can be improved.
Description
Technical field
The present invention relates to data transfer, road based on multipath in field of wireless transmission, more particularly to a kind of wireless device
Footpath system of selection and device.
Background technology
MPTCP (Multi-Path Transmission Control Protocol, Multipath Transmission control protocol) is one
Plant using the transport layer protocol of mulitpath concurrent transmission；Wireless device can be by data distribution a plurality of by MPTCP agreements
Parallel transmission is carried out on path, the handling capacity of radio equipment data transmission is improved and is increased network utilization.
In practical application, during data distribution between mulitpath is carried out, wireless device needs to consider available in multiple
Radio Link in carry out Path selection in advance, if selection several paths in there is the poor transmission path of transmission quality,
The problems such as data transfer on the path easily causes time-out, mistake, packet loss, the re-transmission of packet.So, receiving terminal will be each
When the packet received on path is ranked up and combines, even if the data transfer on other paths is normal, it is also possible to because
For delaying to reach for packet causes the imperfect of data on the path, cause to be paid to the postponement of upper layer application, and then can shadow
Ring overall transfer performance.Therefore, in MPTCP data transfers, poor path is reasonably abandoned, the transmission road of selection is reduced with this
The otherness of the transmission quality between footpath is most important for ensureing effectively reliable data transfer.
It is existing there is provided a kind of routing resource based on RTT, its transmission for being mainly according to data on path is prolonged
It is belated to carry out Path selection.Specifically, the RTT (Round-Trip in the path can be measured by sending RTT test data bags
Time, two-way time), the RTT values of measurement are smaller, may indicate that the transmission delay on the path is small, transmission to a certain extent
Quality is high；And then select the transmission quality path higher to be used for data transfer, it is simple to operate and with the degree of accuracy higher.So
And, due in the existing routing resource based on RTT, it is necessary to sending RTT test data bags carries out the measurement of RTT,
The process such as it is related to the transmission of RTT test data bags, reception in measurement process, confirms to return, when measurement process has certain
Between postpone, reduce Path selection efficiency.And, if the transmission quality of transmission path is relatively low, the measurement of the RTT in the path postpones
It is more serious, cause the time delay of Path selection more serious, it is impossible to meet the requirement of real-time of Path selection, data transfer.
Therefore, it is necessary to provide a kind of routing resource for improving Path selection efficiency and real-time.
The content of the invention
For the defect that above-mentioned prior art is present, the embodiment of the invention provides in a kind of wireless device based on multipath
Data transfer, routing resource and device, be used to improve Path selection efficiency and real-time.
The data transmission method based on multipath in a kind of wireless device is the embodiment of the invention provides, including：
The received signal strength RSS values of each wireless propagation path in measuring apparatus set of paths；Wherein, the equipment
Set of paths includes the path for respectively possessing data transmission capabilities of the wireless device；
Obtain standby after RSS values are rejected less than the wireless propagation path of setting RSS threshold values from the device path set
Survey set of paths；
The two-way time RTT value in measurement standby each path surveyed in set of paths；
RTT values are obtained selecting path set from standby the survey in set of paths more than the path of setting RTT threshold values after rejecting
Close；
Multi-path data transmission is carried out using each path in the selection set of paths.
It is preferred that the RSS values of each wireless propagation path in the measuring apparatus set of paths, specially：
When reaching in each Path selection cycle, the RSS values of each wireless propagation path in measuring apparatus set of paths.
It is preferred that the RSS values of each wireless propagation path in the measuring apparatus set of paths, specially：
For each wireless propagation path in the device path set, for equipment described in the wireless propagation path
Wireless receiving and dispatching port, obtain the wireless receiving and dispatching port receive packet RSS values as measure obtain this be wirelessly transferred road
The RSS values in footpath.
The embodiment of the present invention additionally provides the routing resource based on multipath in a kind of wireless device, including：
The RSS values of each wireless propagation path in measuring apparatus set of paths；Wherein, wrapped in the device path set
Include the path for respectively possessing data transmission capabilities of the wireless device；
Obtain standby after RSS values are rejected less than the wireless propagation path of setting RSS threshold values from the device path set
Survey set of paths；
The RTT values in measurement standby each path surveyed in set of paths；
The road selected after RTT values are rejected more than the path of setting RTT threshold values from the standby survey set of paths
Transmitted for multi-path data in footpath.
It is preferred that the RSS values of each wireless propagation path in the measuring apparatus set of paths, specially：
When reaching in each Path selection cycle, the RSS values of each wireless propagation path in measuring apparatus set of paths.
The embodiment of the present invention additionally provides the path selection device based on multipath in a kind of wireless device, including：
RSS measurement modules, for the RSS values of each wireless propagation path in measuring apparatus set of paths；RSS values is small
Standby survey set of paths is obtained after the wireless propagation path of setting RSS threshold values is rejected from the device path set；Wherein, institute
Stating device path set includes the path for respectively possessing data transmission capabilities of the wireless device；
RTT measurement modules, the RTT values for measuring standby each path surveyed in set of paths；RTT values are more than and are set
Determine RTT threshold values path rejected from the standby survey set of paths that the RSS measurement modules are obtained after the path selected use
In multi-path data transmission.
It is preferred that the RSS measurement modules are specifically for when reaching in each Path selection cycle, for the equipment road
Each wireless propagation path in the set of footpath, for the wireless receiving and dispatching port of equipment described in the wireless propagation path, obtaining should
The RSS values of the wireless propagation path that the RSS values that wireless receiving and dispatching port receives packet are obtained as measurement；And RSS values is small
Standby survey set of paths is obtained after the wireless propagation path of setting RSS threshold values is rejected from the device path set.
The embodiment of the present invention additionally provides the data transmission device based on multipath in a kind of wireless device, including：
RSS measurement modules, for the RSS values of each wireless propagation path in measuring apparatus set of paths；RSS values is small
Standby survey set of paths is obtained after the wireless propagation path of setting RSS threshold values is rejected from the device path set；Wherein, institute
Stating device path set includes the path for respectively possessing data transmission capabilities of the wireless device；
RTT measurement modules, the RTT values for measuring standby each path surveyed in set of paths；RTT values are more than and are set
Determine RTT threshold values path rejected from the standby survey set of paths that the RSS measurement modules are obtained after obtain selecting set of paths；
Data transmission module, is carried out for each path in the selection set of paths that is obtained using the RTT measurement modules
Multi-path data is transmitted.
It is preferred that the RSS measurement modules are specifically for when reaching in each Path selection cycle, for the equipment road
Each wireless propagation path in the set of footpath, for the wireless receiving and dispatching port of equipment described in the wireless propagation path, obtaining should
The RSS values of the wireless propagation path that the RSS values that wireless receiving and dispatching port receives packet are obtained as measurement；And RSS values is small
Standby survey set of paths is obtained after the wireless propagation path of setting RSS threshold values is rejected from the device path set.
In technical scheme, wireless receiving and dispatching port that can directly according to wireless device is in each wireless propagation path
On RSS values and RSS threshold values, RSS values are rejected from the path for respectively possessing data transmission capabilities of wireless device less than setting RSS
Standby survey set of paths is obtained behind the path of threshold value；Obtained behind path of the rejecting RTT values more than RTT threshold values from standby survey in set of paths
From set of paths, multi-path data transmission can be carried out by from the path in set of paths.Compared to existing based on RTT
Routing resource, the present invention provide scheme in, because the RSS values of each wireless propagation path can be obtained immediately, have
Stronger real-time, and system resource is not take up substantially；Meanwhile, each standby transmission quality for surveying path for filtering out is good, each standby
The difference of the transmission quality surveyed between path is smaller, and the time reduced for the measurement process of each standby RTT values for surveying path prolongs
Late, improve the efficiency of Path selection.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the routing resource based on multipath in the embodiment of the present invention；
Fig. 2 is the structural representation of the path selection device based on multipath in the embodiment of the present invention；
Fig. 3 is the structural representation of the data transmission device based on multipath in the embodiment of the present invention.
Specific embodiment
To make the objects, technical solutions and advantages of the present invention become more apparent, referring to the drawings and preferred reality is enumerated
Example is applied, the present invention is described in more detail.However, it is necessary to explanation, many details listed in specification are only to be
The reader is set to have a thorough explanation to one or more aspects of the invention, can also even without these specific details
Realize the aspects of the invention.
The term such as " module " used in this application, " system " is intended to include the entity related to computer, for example but does not limit
In hardware, firmware, combination thereof, software or executory software.For example, module can be, it is not limited to：Treatment
Process, processor, object, executable program, the thread for performing, program and/or the computer run on device.For example, count
The application program and this computing device run in calculation equipment can be modules.One or more modules may be located at executory
In one process and/or thread.
In fact, including Wired transmission path and wireless biography in the path for respectively possessing data transmission capabilities of wireless device
Defeated path；For each wireless propagation path of wireless device, wireless receiving letter of the wireless device on the wireless propagation path
It is number stronger, may indicate that the transmission delay on the path is small, transmission quality is high to a certain extent；And, by transmission environment
Influence, compared to Wired transmission path, the RTT values of wireless propagation path are generally higher.Wherein, wireless device is wireless at this
The intensity of the wireless reception of signals in transmission path specifically can be by RSS values (the Received Signal of measurement
Strength, received signal strength) represent.
Therefore, the present inventor considers, for wireless device, can combine the wireless device on the transmit path
RSS values and RTT values carry out Path selection.For example, can preferentially from the path for respectively possessing data transmission capabilities of wireless device
Middle rejecting RSS values obtain standby survey path set less than the wireless propagation path of setting RSS threshold values (i.e. wireless reception of signals is weaker)
Close；Then, according to the standby RTT values for surveying each path in set of paths, rejecting two-way time too high path, obtain transmission quality compared with
Path high.
Compared to the existing routing resource based on RTT, in technical scheme, each wireless propagation path
RSS values can be obtained immediately, with stronger real-time, and be not take up system resource substantially；Ge Beice roads after being screened through RSS
The transmission quality in footpath is good, and the measurement advantageously reduced for the measurement process of each standby RTT values for surveying path postpones, and improves road
The efficiency of footpath selection.And, the transmission quality through the path obtained by the Double Selection of RSS values and RTT values is high, improves data
The reliability of transmission.
The technical scheme that the invention will now be described in detail with reference to the accompanying drawings.
Routing resource based on multipath, flow such as Fig. 1 institutes in a kind of wireless device provided in an embodiment of the present invention
Show, specifically may include steps of：
S101：The RSS values of each wireless propagation path in measuring apparatus set of paths.
Specifically, device path set corresponding with the wireless device can be determined for wireless device in advance, wherein,
Device path set includes the path for respectively possessing data transmission capabilities of wireless device, for example, 802.3 wireline pathways, GPRS
(General Packet Radio Service, general packet radio service) wireless path, WCDMA (Wideband Code
Division Multiple Access, WCDMA) wireless path, TD-LTE (Time Division Long Term
Evolution, timesharing Long Term Evolution) wireless path, 802.11n wireless paths etc..Then, reached in each Path selection cycle
When, the RSS values of each wireless propagation path in measuring apparatus set of paths.Specifically, for device path set in it is every
Individual wireless propagation path, can obtain the wireless receipts for the wireless receiving and dispatching port of the wireless device in the wireless propagation path
Originator mouth receives the RSS values of packet, and using the RSS values of acquisition as measuring the RSS values of the wireless propagation path that obtain.
S102：RSS values are picked less than the wireless propagation path of setting RSS threshold values from the device path set of wireless device
Standby survey set of paths is obtained after removing.
Specifically, for each wireless propagation path in device path set, by measure obtain this be wirelessly transferred road
The RSS values in footpath are compared with RSS threshold values set in advance, if RSS values illustrate that this is wirelessly transferred less than setting RSS threshold values
The transmission quality in path is poor, it is necessary to abandon the path, will the wireless propagation path from the device path set of wireless device
Middle rejecting.So, eliminating RSS values can claim less than the device path set after each wireless propagation path of setting RSS threshold values
It is standby survey set of paths.Wherein, RSS threshold values be specifically by those skilled in the art according to the parameter characteristic of wireless access technology and
Transmission characteristic is flexibly set.So, wireless propagation path the setting from wireless device by RSS values less than setting RSS threshold values
After being rejected in standby set of paths, each standby transmission quality for surveying path for obtaining is good, subsequently through the good standby survey of transmission quality
Path carries out the measurement of RTT values, and measurement postpones smaller.
S103：The RTT values in each path in the standby survey set of paths that measurement is obtained.
Specifically, for each path in the standby survey set of paths for obtaining, wireless terminal is by the path to recipient
Packet is sent, the RTT values in the path are measured.
S104：Selected after RTT values are rejected more than the path of setting RTT threshold values from the standby survey set of paths for obtaining
Transmitted for multi-path data in the path for going out.
Specifically, for standby each path surveyed in set of paths, the RTT values in the path for obtaining will be measured and is set in advance
Fixed RTT threshold values are compared, if the RTT values in the path are more than RTT threshold values (i.e. two-way time exceedes regular hour threshold value),
Then illustrate that the transmission quality in the path is not high, can abandon, will path rejecting from standby survey set of paths.So, finally
The path that the path in standby survey set of paths through deleting alternatively goes out, for multi-path data transmission.Wherein, RTT threshold values
Specifically flexibly set according to the parameter characteristic and transmission characteristic of wireless access technology by those skilled in the art.
Based on the routing resource based on multipath in above-mentioned wireless device, present invention also offers a kind of wireless device
In the data transmission method based on multipath, by RTT values more than setting the path of RTT threshold values from the standby survey set of paths for obtaining
Obtain selecting set of paths after middle rejecting, and multi-path data biography is carried out using each path in the selection set of paths for obtaining
It is defeated.
Based on the routing resource based on multipath in above-mentioned wireless device, present invention also offers a kind of wireless device
In based on multipath path selection device, its internal structure, as shown in Fig. 2 including：RSS measurement modules 201, RTT measure mould
Block 202.
Wherein, the RSS values of each wireless propagation path that RSS measurement modules 201 are used in measuring apparatus set of paths；Will
RSS values after being rejected in the wireless propagation path slave unit set of paths of setting RSS threshold values less than obtaining standby surveying set of paths.Its
In, device path set includes the path for respectively possessing data transmission capabilities of wireless device.
Specifically, RSS measurement modules 201 can be when reaching, in device path set in each Path selection cycle
Each wireless propagation path, for the wireless receiving and dispatching port of wireless device in the wireless propagation path, obtain the wireless receiving and dispatching
The RSS values of the wireless propagation path that the RSS values that port receives packet are obtained as measurement；And by RSS values less than setting RSS
Standby survey set of paths is obtained after being rejected in the wireless propagation path slave unit set of paths of threshold value.
RTT measurement modules 202 are used to measure each path in the standby survey set of paths that RSS measurement modules 201 are obtained
RTT values；After RTT values are rejected more than the path of setting RTT threshold values from the standby survey set of paths that RSS measurement modules 201 are obtained
Path being selected, for multi-path data transmission is constituted selects set of paths.
Further, based on the path selection device based on multipath in above-mentioned wireless device, present invention also offers one
The data transmission device based on multipath in wireless device is planted, its internal structure is as shown in figure 3, except including above-mentioned wireless device
In based on multipath path selection device in RSS measurement modules 201 and RTT measurement modules 202, also include：Data transfer
Module 203.
Wherein, the selection set of paths Zhong Ge roads that data transmission module 203 can be obtained using RTT measurement modules 202
Footpath carries out multi-path data transmission.
It is each in path selection device, data transmission device based on multipath in wireless device in the embodiment of the present invention
Module specifically may be referred to each step in above-mentioned routing resource, data transmission method, selection transmission quality path high
Carry out data transmission.
In technical scheme, wireless receiving and dispatching port that can directly according to wireless device is in each wireless propagation path
On RSS values and RSS threshold values, RSS values are rejected from the path for respectively possessing data transmission capabilities of wireless device less than RSS threshold values
Wireless propagation path after, obtain standby surveying set of paths；Then, RTT values are rejected more than RTT threshold values from standby survey in set of paths
Path, obtains containing the selection set of paths in transmission quality each path higher, is selected from the selection set of paths for obtaining
Path carries out multi-path data transmission.Compared to the technical scheme that the existing routing resource based on RTT, the present invention are provided
In, the RSS values of each wireless propagation path can be obtained immediately, with stronger real-time, and be not take up system resource substantially；Through
Each standby transmission quality for surveying path after RSS screenings is good, advantageously reduces the measurement process for each standby RTT values for surveying path
Measurement postpone, improve the efficiency of Path selection.
One of ordinary skill in the art will appreciate that all or part of step in realizing above-described embodiment method can be
The hardware of correlation is instructed to complete by program, the program can be stored in computer read/write memory medium, such as：ROM/
RAM, magnetic disc, CD etc..
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (7)
1. the data transmission method of multipath is based in a kind of wireless device, it is characterised in that including：
The received signal strength RSS values of each wireless propagation path in measuring apparatus set of paths；Wherein, the device path
Set includes the path for respectively possessing data transmission capabilities of the wireless device；
Standby survey road is obtained after RSS values are rejected less than the wireless propagation path of setting RSS threshold values from the device path set
Gather in footpath；
The two-way time RTT value in measurement standby each path surveyed in set of paths；
RTT values are obtained selecting set of paths from standby the survey in set of paths more than the path of setting RTT threshold values after rejecting；
Multi-path data transmission is carried out using each path in the selection set of paths.
2. the method for claim 1, it is characterised in that each in the measuring apparatus set of paths is wirelessly transferred road
The RSS values in footpath, specially：
When reaching in each Path selection cycle, the RSS values of each wireless propagation path in measuring apparatus set of paths.
3. the method for claim 1, it is characterised in that each in the measuring apparatus set of paths is wirelessly transferred road
The RSS values in footpath, specially：
For each wireless propagation path in the device path set, for the nothing of equipment described in the wireless propagation path
Line receives and dispatches port, obtains the wireless receiving and dispatching port and receives the RSS values of packet as measuring the wireless propagation path that obtains
RSS values.
4. the path selection device of multipath is based in a kind of wireless device, it is characterised in that including：
RSS measurement modules, for the RSS values of each wireless propagation path in measuring apparatus set of paths；RSS values are less than and are set
Determine RSS threshold values wireless propagation path rejected from the device path set after obtain standby surveying set of paths；Wherein, it is described to set
Standby set of paths includes the path for respectively possessing data transmission capabilities of the wireless device；
RTT measurement modules, the RTT values for measuring standby each path surveyed in set of paths；By RTT values more than setting
The path that the path of RTT threshold values is selected after being rejected from the standby survey set of paths that the RSS measurement modules are obtained is used for
Multi-path data is transmitted.
5. device as claimed in claim 4, it is characterised in that
The RSS measurement modules specifically for when reaching in each Path selection cycle, in the device path set
Each wireless propagation path, for the wireless receiving and dispatching port of equipment described in the wireless propagation path, obtains the wireless receiving and dispatching end
The RSS values of the wireless propagation path that the RSS values that mouth receives packet are obtained as measurement；And by RSS values less than setting RSS thresholds
The wireless propagation path of value obtains standby survey set of paths after being rejected from the device path set.
6. the data transmission device of multipath is based in a kind of wireless device, it is characterised in that including：
RSS measurement modules, for the RSS values of each wireless propagation path in measuring apparatus set of paths；RSS values are less than and are set
Determine RSS threshold values wireless propagation path rejected from the device path set after obtain standby surveying set of paths；Wherein, it is described to set
Standby set of paths includes the path for respectively possessing data transmission capabilities of the wireless device；
RTT measurement modules, the RTT values for measuring standby each path surveyed in set of paths；By RTT values more than setting
The path of RTT threshold values obtains selecting set of paths after being rejected from the standby survey set of paths that the RSS measurement modules are obtained；
Data transmission module, multichannel is carried out for each path in the selection set of paths that is obtained using the RTT measurement modules
Footpath data transfer.
7. device as claimed in claim 6, it is characterised in that
The RSS measurement modules specifically for when reaching in each Path selection cycle, in the device path set
Each wireless propagation path, for the wireless receiving and dispatching port of equipment described in the wireless propagation path, obtains the wireless receiving and dispatching end
The RSS values of the wireless propagation path that the RSS values that mouth receives packet are obtained as measurement；And by RSS values less than setting RSS thresholds
The wireless propagation path of value obtains standby survey set of paths after being rejected from the device path set.
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| US20180205660A1 (en) * | 2017-01-19 | 2018-07-19 | Futurewei Technologies, Inc. | Apparatus and method for controlling usage of a non-optimal path |
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