CN104917679B - A kind of delay-tolerant network personalization routing plan selection system towards handheld mobile device - Google Patents
A kind of delay-tolerant network personalization routing plan selection system towards handheld mobile device Download PDFInfo
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- CN104917679B CN104917679B CN201510312645.3A CN201510312645A CN104917679B CN 104917679 B CN104917679 B CN 104917679B CN 201510312645 A CN201510312645 A CN 201510312645A CN 104917679 B CN104917679 B CN 104917679B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/302—Route determination based on requested QoS
- H04L45/308—Route determination based on user's profile, e.g. premium users
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/12—Shortest path evaluation
- H04L45/125—Shortest path evaluation based on throughput or bandwidth
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
- H04W40/04—Communication route or path selection, e.g. power-based or shortest path routing based on wireless node resources
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention belongs to mobile network route field, and in particular to be it is a kind of towards handheld mobile device delay-tolerant network personalization routing plan selection system.The present invention includes: that the opening module of handheld mobile device receives the instruction that user opens routing function；Equipment room information exchange module is used for the information exchange of handheld mobile device and handheld mobile device；User demand collection module receives the Flag from opening module；Device resource sensing module receives the Flag from opening module；DTN method for routing obtains module and receives the Flag from opening module；DTN method for routing filtering module receives the set of the equipment room information-storing device in equipment room information exchange module and obtains the set etc. of module ROM from DTN method for routing.Handheld mobile device is communicated using optional DTN method for routing in the present invention, and application can reduce the resource overhead of handheld device, improves the delivery rate of message.
Description
Technical field
The invention belongs to mobile network route field, and in particular to be a kind of delay-tolerant towards handheld mobile device
Network personalized routing plan selects system.
Background technique
In recent years, handheld mobile device has the characteristic of " small volume and less weight ", " convenient and fast communication " and " surfing the Internet whenever and wherever possible ",
Can the moment with user at one's side so that mobile Internet present gusher formula development.But still there is the network of some areas at present
Infrastructure be not it is very perfect, have the characteristics that intermittent connection, high latency, low delivery rate.In such circumstances, hand-held movement is set
The standby transmission that information can not be completed by traditional network, needs to utilize delay-tolerant network (DTN, Delay Tolerant
Network) route pattern of " storage-carrying-forwarding " solves the communication issue in this environment.Due to handheld mobile device
Universal and computing capability and storage capacity increase, has had been provided with the hardware condition for realizing DTN network.However it uses hand-held
Each user of mobile device has significant individual demand, for example, when user requires relatively low to time delay, safety etc.,
User is more prone to using simple routing plan；When user is higher to performance requirement, user is more prone to multiple in routing plan
Combination.Therefore, in such DTN network, there is very big limitation using the DTN route pattern that fixed a certain kind determines
Property, it cannot sufficiently meet the individual demand of user, needing proposition can be adaptively selected not go the same way according to user demand difference
By the system of scheme.
Currently, mainly communicated using determining DTN route pattern on handheld mobile device, it can there are no realizing
To meet the DTN routing plan of users ' individualized requirement.Paper " Delay Tolerant Network on Android
Phones:Implementation Issues and Performance Measurements”(http://
Ojs.academypublisher.com/index.php/jsw/article/view/jsw0 91027132720) in android
A kind of DTN method for routing of consumption for considering bandwidth and battery is realized on mobile phone, but it does not consider user's
Individual demand.Paper " Bundle Protocol Implementation for Android Devices " (http: //
Dl.acm.org/citation.cfm? id=2348606 IBR-DTN routing plan) is devised, IBR-DTN can operate in version
This is but to meet the routing plan of user individual without providing for user on the mobile phone of android2.3.
In conclusion the DTN route pattern that a certain kind that although handheld mobile device can use at present is fixed is passed
Transmission of data, but fixed DTN route pattern is unable to fully meet the individual demand of different user.
Summary of the invention
It is an object of the invention to provide a user a kind of delay-tolerant network routing plan towards handheld mobile device
The system of individualized selection.
The object of the present invention is achieved like this:
(1) the DTN opening module OM of handheld mobile device N receives the instruction that user opens DTN routing function, and to set
Device identifier ID is arranged in standby NN, OM, which is searched for, whether there is arbitrary handheld mobile device M in equipment N communication range；If search
It as a result is multiple equipment, OM obtains the device identifier ID apart from nearest equipment MM；If it is straight to search only for out equipment a M, OM
Obtain the device identifier ID for taking equipment MM；The flag bit Flag of the state of DTN routing function is set True by OM；OM is by IDM
It is sent to the equipment room information exchange module BIM of equipment N, the state flag bit Flag=True of DTN routing function is sent to
DTN method for routing obtains module ROM, device resource sensing module TM and user demand collection module GM；It is set if not searching
Standby, handheld mobile device N carries out next round search；
(2) equipment room information exchange module BIM is used for the information exchange of handheld mobile device N and handheld mobile device M, packet
Include equipment room information receiving interface, equipment room information-storing device, equipment room information transmission interface:
Equipment room information receiving interface receives the ID from DTN opening module OMM, and receiving device identifier is IDMHand
Its DTN method for routing set C (M) supported of mobile device M transmission is held, wherein；By IDMIt is sent to equipment
Between information transmission interface, C (M) is sent to DTN method for routing filtering module (FM)；
Equipment room information transmission interface receives the road of the DTN routing plan selecting module SM in handheld mobile device N
By scheme SP, being sent to device flag is IDMHandheld mobile device M in；
(3) user demand collection module GM receives the Flag from DTN opening module OM and collects if Flag=True
User demand, and user demand is resolved into demand binary group-demand title, then which is sent to by desired content
DTN routing plan selecting module SM；
(4) device resource sensing module TM receives the Flag from DTN opening module OM and obtains if Flag=True
The resource situation of handheld mobile device N, and resource situation is resolved into resource binary group-CPU processor free value, memory
Free value, which is sent to DTN routing plan selecting module SM；
(5) DTN method for routing obtains module ROM and receives the Flag from DTN opening module OM, if Flag=True,
The DTN method for routing set C (N) that the equipment is supported is obtained, wherein；And send it to DTN method for routing mistake
Filter module FM；
(6) the equipment room information that DTN method for routing filtering module FM is received in equipment room information exchange module BIM is deposited
The set C (M) of the reservoir and set C (N) that module ROM is obtained from DTN method for routing.It is filtered out jointly by seeking common ground
DTN method for routing set C (M&N), and C (M&N) is sent to DTN routing plan selecting module SM；
(7) DTN routing plan selecting module SM receives the method for routing set C from DTN method for routing filtering module FM
(M&N), the resource binary group from device resource sensing module TM and the demand binary from user demand parsing module AM
Group, filtering out an optimal routing plan routing plan SP may be that one or more method for routing is composed, by road
Equipment room information transmission interface in execution module EM and equipment room information exchange module BIM is sent to by scheme SP；The road DTN
It mainly include matching module and screening module by Scheme Choice module；
Matching module is used to calculate the match condition and device resource of the demand of user and the performance of DTN method for routing
The resource consumption match condition of idle condition and DTN method for routing.For the DTN routing in DTN method for routing set C (M&N)
Method RS (j), wherein j (0 < j≤| C (M&N) |), | C (M&N) | represent the number of element in set C (M&N).DTN is routed
DTN method for routing RS (j) in method set C (M&N), wherein j (0 < j≤| C (M&N) |), | C (M&N) | represent set C (M&
N the number of element in).The matching probability P between the bandwidth and user demand bandwidth in RS (j) is calculated such as formula (1)D(j)；Its
In,
What uD was indicated is the demand bandwidth value of user, and rD indicates the bandwidth value that can be provided of DTN method for routing；
Calculate the processor consumption value of RS (j) and the matching probability P of device handler free valueT(j)；
Wherein, fT indicates that device handler free value, rT indicate the processor consumption value of RS (j)；
Calculate the matching probability P of the memory consumption value of RS (j) and the memory free value of equipmentM(j)；
Wherein, fM indicates that the memory free value of equipment, rM indicate the memory consumption value of RS (j)；
If PD(j) RS (j) is then stored in demand list of matches (D) by ∈ [α, 1]；If PT(j) ∈ [β, 1], then by RS
(j) it is stored in processor list of matches T；If PM(j) RS (j) is then stored in memory matched list M by ∈ [γ, 1],
Otherwise, other method for routing are continued to search；Wherein, α, β, γ are selected threshold values.By list D, processor list of matches T,
List M is sent to screening module；
Screening module receives demand matching D list, processor matching T list, memory matched M column from matching module
Table, list information is checked in search, if DTN method for routing RS (j) is present in each list, RS (j) method for routing is most
Good routing plan SP chooses the maximum DTN method for routing of matching probability value from list D, list T, list M respectively,
The DTN method for routing that will be chosen from each list synthesizes Optimization route scheme SP, and Optimization route scheme SP is sent to
Execution module EM and equipment room information exchange module BIM；
(8) execution module EM receives the routing plan SP from DTN routing plan selecting module SM and executes:
The implementation process step of delay-tolerant network personalization routing plan selection system towards handheld mobile device is such as
Under:
(1.1) user opens the DTN routing function of handheld mobile device N, and the open command is by handheld mobile device N's
DTN opening module (OM) receives；
It (1.2) is first equipment N setting after the DTN opening module (OM) of handheld mobile device N receives open command
Device identifier IDN.Next, which is checked, whether there is arbitrary handheld mobile device M in handheld mobile device N communication range, if
Search result is multiple equipment, is executed (1.3), if searching only for out an equipment M, is executed (1.4), if not searching out equipment,
Handheld mobile device N carries out next round search；
(1.3) OM obtains the device identifier ID apart from nearest equipment MM, into (1.5)；
(1.4) OM directly acquires the device identifier ID of equipment MM, into (1.5)；
(1.5) the flag bit Flag of the state of DTN routing function is set True by OM, secondly, OM is by the ID of equipment MM
It is sent to equipment room information exchange module (BIM), Flag=True is sent to DTN method for routing and obtains module ROM, equipment money
Source sensing module TM and user demand collection module GM；
(1.6) mould is opened from DTN when the equipment room information receiving interface in equipment room information exchange module BIM is received
The ID of block OMMAfterwards, receiving device identifier is IDMEquipment M transmission its DTN method for routing set C (M) supported, and will
IDMIt is sent to the transmission of equipment room information to connect, C (M) is sent to DTN method for routing filtering module FM.
(1.7) Flag from DTN opening module OM is had received when DTN method for routing obtains module ROM, if Flag=
True obtains the DTN method for routing set C (N) that the equipment is supported, and sends it to DTN method for routing filtering module
(FM) matching module in；
(1.8) DTN method for routing filtering module FM filters out common DTN method for routing set C (M&N) by seeking common ground,
And C (M&N) is sent to DTN routing plan selecting module SM.
(1.9) user demand collection module GM receives the Flag from DTN opening module OM and receives if Flag=True
Collect user demand, user demand is resolved into demand binary group-demand title, desired content, and the binary group is sent to
DTN routing plan selecting module SM；
(1.10) device resource sensing module TM receives the Flag from DTN opening module OM and obtains if Flag=True
Resource situation is resolved to the free time of resource binary group-CPU processor free value, memory by the case where taking the device resource
Value, and the binary group is sent to DTN routing plan selecting module SM；
(1.11) when the matching module in DTN routing plan selecting module (SM) receives demand binary group, method for routing
Set C (M&N) and resource binary group after, calculate PD(j)、PT(j)、PM(j), if PD(j) ∈ [α, 1], then deposit RS (j)
It is put into demand list of matches D；If PT(j) RS (j) is then stored in processor list of matches T by ∈ [β, 1]；If PM(j)∈
RS (j) is then stored in memory matched list M, otherwise, continues to search other method for routing by [γ, 1], wherein α, β,
γ is selected threshold value, and list D, processor list of matches T, list M are sent to screening module；
(1.12) after screening module receives the list of matching module transmission, list information is checked in search, if the road DTN
It is present in each list by method RS (j), then is optimal routing plan SP by DTN method for routing RS (j)；Otherwise, respectively
The maximum DTN routing of matching probability value is chosen from demand matching D list, processor matching T list, memory matched M
The DTN method for routing chosen from each list is combined by method, synthesizes Optimization route scheme SP；And by best road
Equipment room information transmission interface in execution module EM and equipment room information exchange module BIM is sent to by scheme SP；
(1.13) the equipment room information transmission interface in equipment room information exchange module BIM sends out the routing plan received
It is ID that SP, which is sent to device flag,MHandheld mobile device M in；
(1.14) execution module EM executes the routing plan SP received.
The beneficial effects of the present invention are:
A kind of delay-tolerant network personalization routing plan selection system towards handheld mobile device of the invention is portion
It is deployed on handheld mobile device, this system can collect the demand of user by handheld mobile device, and dynamic sensing is hand-held to be moved
The resource idle condition of dynamic equipment, the DTN method for routing supported using handheld mobile device are provided and meet user individual need
The DTN routing plan asked.The present invention can sufficiently meet the different individual demands of user, reduce opening for handheld device resource
Pin, maximizes the delivery rate of message.
The present invention can collect the demand of user, perceive the available resources situation of handheld mobile device, and selection can satisfy
The DTN routing plan of users ' individualized requirement.Handheld mobile device is led to using optional DTN method for routing in the present invention
Letter, application can reduce the resource overhead of handheld device, improve the delivery rate of message.
Detailed description of the invention
A kind of personalized delay-tolerant network routing plan towards handheld mobile device of Fig. 1 selects system；
A kind of personalized delay-tolerant network routing plan towards handheld mobile device of Fig. 2 selects system flow chart.
Specific embodiment
It is for a more detailed description to the present invention combined with specific embodiments below:
It is characteristic of the invention that knowing the demand of user by handheld mobile device, and perceive the resource of handheld mobile device
Idle condition, and then dynamic select DTN routing plan, meet users ' individualized requirement.
A kind of delay-tolerant network personalization routing plan towards handheld mobile device of the invention selects system, first
It is deployed on handheld mobile device, which supports DTN method for routing to belong to DTN method for routing set (C) and { be directly connected to road
(Epidemic Routing), location-based routing are routed by (Direct Contact Routing), infectious disease
(Location-Based Routing), effectiveness route (PROPHET), spraying wait routes (Spray And Wait
Routing one of) } either several.User is by the DTN function of starting handheld mobile device, and bring into operation personalization
Delay-tolerant network routing plan selects system, relates generally to the existing handheld mobile device N of user, and communicate any
Handheld mobile device M, is implemented as follows:
(1) the DTN opening module (OM) of handheld mobile device N receives user and opens the instruction of DTN routing function, and is
Device identifier ID is arranged in equipment NN.In turn, OM, which is searched for, whether there is arbitrary handheld mobile device M in equipment N communication range.
If search result is multiple equipment, OM obtains the device identifier ID apart from nearest equipment MM；If searching only for out an equipment
M, OM directly acquire the device identifier ID of equipment MM.OM sets the flag bit (Flag) of the state of DTN routing function to
True.OM is by IDMIt is sent to the equipment room information exchange module (BIM) of equipment N, by the state flag bit of DTN routing function
(Flag=True) it is sent to DTN method for routing and obtains module (ROM), device resource sensing module (TM) and user demand receipts
Collect module (GM).If not searching equipment, handheld mobile device N carries out next round search.
(2) equipment room information exchange module (BIM) is mainly used for the information of handheld mobile device N and handheld mobile device M
Interaction.Including equipment room information receiving interface, equipment room information-storing device, equipment room information transmission interface.
1. equipment room information receiving interface receives the ID for coming from DTN opening module (OM)M, and receiving device identifier is IDM
Handheld mobile device M transmission its DTN method for routing set C (M) supported, wherein；By IDMIt is sent to
C (M) is sent to DTN method for routing filtering module (FM) by equipment room information transmission interface.
2. equipment room information transmission interface receives the DTN routing plan selecting module (SM) in handheld mobile device N
Routing plan (SP), by this be sent to device flag be IDMHandheld mobile device M in.
(3) user demand collection module (GM) receives the Flag for coming from DTN opening module (OM), if Flag=True,
User demand is collected, and user demand is resolved into demand binary group (demand title, desired content), then sends out the binary group
It send to DTN routing plan selecting module (SM).
(4) device resource sensing module (TM) receives the Flag for coming from DTN opening module (OM), if Flag=True,
The resource situation of handheld mobile device N is obtained, and resource situation is resolved into resource binary group (CPU processor free value, storage
The free value of device), the binary group is then sent to DTN routing plan selecting module (SM).
(5) DTN method for routing obtains module (ROM) and receives the Flag for coming from DTN opening module (OM), if Flag=
True then obtains the DTN method for routing set C (N) that the equipment is supported, wherein；And send it to the road DTN
By method filtering module (FM).
(6) DTN method for routing filtering module (FM) receives the equipment room letter in equipment room information exchange module (BIM)
It ceases the set C (M) of memory and obtains the set C (N) of module (ROM) from DTN method for routing.It is filtered out by seeking common ground
Common DTN method for routing set C (M&N), and C (M&N) is sent to DTN routing plan selecting module (SM).
(7) DTN routing plan selecting module (SM) receives the method for routing collection for coming from DTN method for routing filtering module (FM)
Close C (M&N), the resource binary group from device resource sensing module (TM) and the need from user demand parsing module (AM)
Binary group is sought, filtering out an optimal routing plan, (routing plan (SP) may be the combination of one or more method for routing
Into), routing plan (SP) is sent to the letter of the equipment room in execution module (EM) and equipment room information exchange module (BIM)
Cease transmission interface；DTN routing plan selecting module mainly includes matching module and screening module.
1. matching module is used to calculate the match condition and equipment money of the demand of user and the performance of DTN method for routing
The resource consumption match condition of source idle condition and DTN method for routing.For the road DTN method for routing set C (M&N) Zhong DTN
By method RS (j), wherein j (0 < j≤| C (M&N) |), | C (M&N) | represent the number of element in set C (M&N).For the road DTN
By the DTN method for routing RS (j) in method set C (M&N), wherein j (0 < j≤| C (M&N) |), | C (M&N) | represent set C
(M&N) number of element in.The matching probability P between the bandwidth and user demand bandwidth in RS (j) is calculated such as formula (1)D
(j).Wherein,
What uD was indicated is the demand bandwidth value of user, and rD indicates the bandwidth value that can be provided of DTN method for routing；
The processor consumption value of RS (j) and the matching probability P of device handler free value are calculated such as formula (2)T(j)；
Wherein, fT indicates that device handler free value, rT indicate the processor consumption value of RS (j).
As formula (3) calculate the matching probability P of the memory consumption value of RS (j) and the memory free value of equipmentM(j)；
Wherein, fM indicates that the memory free value of equipment, rM indicate the memory consumption value of RS (j).
If PD(j) RS (j) is then stored in demand list of matches (D) by ∈ [α, 1]；If PT(j) ∈ [β, 1], then by RS
(j) it is stored in processor list of matches (T)；If PM(j) RS (j) is then stored in memory matched list (M) by ∈ [γ, 1]
In, otherwise, continue to search other method for routing.Wherein, α, β, γ are selected threshold values.By list (D), processor matching column
Table (T), list (M) are sent to screening module.
2. screening module receives demand matching (D) list, processor matching (T) list, memory from matching module
(M) list is matched, list information is checked in search, if DTN method for routing RS (j) is present in each list, RS (j) routing
Method is optimal routing plan (SP).Otherwise, matching probability is chosen from list (D), list (T), list (M) respectively
It is worth maximum DTN method for routing, the DTN method for routing that will be chosen from each list synthesizes Optimization route scheme (SP).And
Optimization route scheme (SP) is sent to execution module (EM) and equipment room information exchange module (BIM).
(8) execution module (EM) receives the routing plan (SP) from DTN routing plan selecting module (SM) and executes.
A kind of reality of delay-tolerant network personalization routing plan selection system towards handheld mobile device of the invention
Existing process step is as follows:
(1) user opens the DTN routing function of handheld mobile device N.The open command is by the DTN of handheld mobile device N
Opening module (OM) receives.
(2) it after the DTN opening module (OM) of handheld mobile device N receives open command, is set first for equipment N
Standby identifier IDN.Next is checked with the presence or absence of arbitrary handheld mobile device M in handheld mobile device N communication range, if searched
Hitch fruit is multiple equipment, is executed (3), if searching only for out an equipment M, is executed (4).If not searching out equipment, holds and move
Dynamic equipment N carries out next round search
(3) OM obtains the device identifier ID apart from nearest equipment MM, into (5).
(4) OM directly acquires the device identifier ID of equipment MM, into (5).
(5) flag bit (Flag) of the state of DTN routing function is set True by OM, secondly, OM is by the ID of equipment MM
It is sent to equipment room information exchange module (BIM).(Flag=True) is sent to DTN method for routing acquisition module (ROM), is set
Standby resource perception module (TM) and user demand collection module (GM).
(6) mould is opened from DTN when the equipment room information receiving interface in equipment room information exchange module (BIM) is received
The ID of block (OM)MAfterwards, receiving device identifier is IDMEquipment M transmission its DTN method for routing set C (M) supported, and
By IDMIt is sent to the transmission of equipment room information to connect, C (M) is sent to DTN method for routing filtering module (FM).
(7) Flag from DTN opening module (OM) is had received when DTN method for routing obtains module (ROM), if Flag=
True obtains the DTN method for routing set C (N) that the equipment is supported, and sends it to DTN method for routing filtering module
(FM) matching module in.
(8) DTN method for routing filtering module (FM) filters out common DTN method for routing set C (M&N) by seeking common ground,
And C (M&N) is sent to DTN routing plan selecting module (SM).
(9) user demand collection module (GM) receives the Flag for coming from DTN opening module (OM), if Flag=True,
User demand is collected, user demand is resolved into demand binary group (demand title, desired content), and the binary group is sent to
DTN routing plan selecting module (SM).
(10) device resource sensing module (TM) receives the Flag for coming from DTN opening module (OM), if Flag=True,
Resource situation is resolved to the resource binary group (free time of CPU processor free value, memory by the case where obtaining the device resource
Value), and the binary group is sent to DTN routing plan selecting module (SM).
(11) when matching module in DTN routing plan selecting module (SM) receives demand binary group, method for routing
After set C (M&N) and resource binary group, formula (1), formula (2), formula (3) is utilized to calculate PD(j)、PT(j)、PM(j).If
PD(j) RS (j) is then stored in demand list of matches (D) by ∈ [α, 1]；If PT(j) ∈ [β, 1], then everywhere by RS (j) storage
It manages in device list of matches (T)；If PM(j) RS (j) is then stored in memory matched list (M) by ∈ [γ, 1], otherwise, after
It is continuous to search other method for routing.Wherein, α, β, γ are selected threshold values.By list (D), processor list of matches (T), list
(M) it is sent to screening module.
(12) after screening module receives the list of matching module transmission, list information is checked in search, if DTN is routed
Method RS (j) is present in each list, then is optimal routing plan (SP) by DTN method for routing RS (j).Otherwise, respectively
It is maximum that matching probability value is chosen from demand matching (D) list, processor matching (T) list, memory matched (M)
The DTN method for routing chosen from each list is combined by DTN method for routing, is synthesized Optimization route scheme (SP).And
Optimization route scheme (SP) is sent to the equipment room information in execution module (EM) and equipment room information exchange module (BIM)
Transmission interface.
(13) the equipment room information transmission interface in equipment room information exchange module (BIM) sends out the routing plan received
(SP) sending to device flag is IDMHandheld mobile device M in.
(14) execution module (EM) executes the routing plan (SP) received.
A kind of delay-tolerant network personalization routing plan towards handheld mobile device of the invention selects system, first
It is deployed on handheld mobile device, which supports DTN method for routing to belong to DTN method for routing set (C) and { be directly connected to road
(Epidemic Routing), location-based routing are routed by (Direct Contact Routing), infectious disease
(Location-Based Routing), effectiveness route (PROPHET), spraying wait routes (Spray And Wait
Routing one of) } either several.User is by the DTN function of starting handheld mobile device, and bring into operation personalization
Delay-tolerant network routing plan selects system, relates generally to the existing handheld mobile device N of user, and communicate any
Handheld mobile device M, is implemented as follows:
(1) the DTN opening module (OM) of handheld mobile device N receives user and opens the instruction of DTN routing function, and is
Device identifier ID is arranged in equipment NN.In turn, OM, which is searched for, whether there is arbitrary handheld mobile device M in equipment N communication range.
If search result is multiple equipment, device identifier ID of the OM by acquisition apart from nearest equipment MM；If searching only for out one to set
Standby M, OM will directly obtain the device identifier ID of equipment MM.The flag bit (Flag) of the state of DTN routing function is arranged OM
For True.OM is by IDMIt is sent to the equipment room information exchange module (BIM) of equipment N, by the state flag bit of DTN routing function
(Flag=True) it is sent to DTN method for routing and obtains module (ROM), device resource sensing module (TM) and user demand receipts
Collect module (GM).If not searching equipment, handheld mobile device N carries out next round search.
(2) equipment room information exchange module (BIM) is mainly used for the information of handheld mobile device N and handheld mobile device M
Interaction.Including equipment room information receiving interface, equipment room information-storing device, equipment room information transmission interface.
1. equipment room information receiving interface receives the ID for coming from DTN opening module (OM)M, and receiving device identifier is IDM
Handheld mobile device M transmission its DTN method for routing supported set C (M), wherein；By IDMIt sends
To equipment room information transmission interface, C (M) is sent to DTN method for routing filtering module (FM).
2. equipment room information transmission interface receives the DTN routing plan selecting module (SM) in handheld mobile device N
Routing plan (SP), by this be sent to device flag be IDMHandheld mobile device M in.
(3) user demand collection module (GM) receives the Flag for coming from DTN opening module (OM), if Flag=True,
User demand is collected, and user demand is resolved into demand binary group (demand title, desired content), then sends out the binary group
It send to DTN routing plan selecting module (SM).
(4) device resource sensing module (TM) receives the Flag for coming from DTN opening module (OM), if Flag=True,
The resource situation of handheld mobile device N is obtained, and resource situation is resolved into resource binary group (CPU processor free value, storage
The free value of device), the binary group is then sent to DTN routing plan selecting module (SM).
(5) DTN method for routing obtains module (ROM) and receives the Flag for coming from DTN opening module (OM), if Flag=
True obtains the DTN method for routing set C (N) that the equipment is supported, wherein；And send it to DTN routing
Method filtering module (FM).
(6) DTN method for routing filtering module (FM) receives the equipment room letter in equipment room information exchange module (BIM)
It ceases the set C (M) of memory and obtains the set C (N) of module (ROM) from DTN method for routing.It is filtered out by seeking common ground
Common DTN method for routing set C (M&N), and C (M&N) is sent to DTN routing plan selecting module (SM).
(7) DTN routing plan selecting module (SM) receives the method for routing collection for coming from DTN method for routing filtering module (FM)
Close C (M&N), the resource binary group from device resource sensing module (TM) and the need from user demand parsing module (AM)
Binary group is sought, filtering out an optimal routing plan, (routing plan (SP) may be the combination of one or more method for routing
Into), routing plan (SP) is sent to the letter of the equipment room in execution module (EM) and equipment room information exchange module (BIM)
Cease transmission interface；DTN routing plan selecting module mainly includes matching module and screening module.
1. matching module calculates the match condition and device resource sky of the demand of user and the performance of DTN method for routing
The resource consumption match condition of not busy situation and DTN method for routing.For the routing side DTN in DTN method for routing set C (M&N)
Method RS (j), wherein j (0 < j≤| C (M&N) |), | C (M&N) | represent the number of element in set C (M&N).For the routing side DTN
DTN method for routing RS (j) in method set C (M&N), wherein j (0 < j≤| C (M&N) |), | C (M&N) | it represents set C (M&N)
The number of middle element.1. matching module calculates the match condition of the demand of user and the performance of DTN method for routing and equipment provides
The resource consumption match condition of source idle condition and DTN method for routing.For the road DTN method for routing set C (M&N) Zhong DTN
By method RS (j), wherein j (0 < j≤| C (M&N) |), | C (M&N) | represent the number of element in set C (M&N).For the road DTN
By the DTN method for routing RS (j) in method set C (M&N), wherein j (0 < j≤| C (M&N) |), | C (M&N) | represent set C
(M&N) number of element in.The matching probability P between the bandwidth and user demand bandwidth in RS (j) is calculated such as formula (1)D
(j).Wherein,
What uD was indicated is the demand bandwidth value of user, and rD indicates the bandwidth value that can be provided of DTN method for routing；
The processor consumption value of RS (j) and the matching probability P of device handler free value are calculated such as formula (2)T(j)；
Wherein, fT indicates that device handler free value, rT indicate the processor consumption value of RS (j).
As formula (3) calculate the matching probability P of the memory consumption value of RS (j) and the memory free value of equipmentM(j)；
Wherein, fM indicates that the memory free value of equipment, rM indicate the memory consumption value of RS (j).
If PD(j) RS (j) is then stored in demand list of matches (D) by ∈ [α, 1]；If PT(j) ∈ [β, 1], then by RS
(j) it is stored in processor list of matches (T)；If PM(j) RS (j) is then stored in memory matched list (M) by ∈ [γ, 1]
In, otherwise, continue to search other method for routing.Wherein, α=0.7, β=0.4, γ=0.6.By list (D), processor
Screening module is sent to list (T), list (M).
2. screening module receives demand matching (D) list, processor matching (T) list, memory from matching module
(M) list is matched, list information is checked in search, if DTN method for routing RS (j) is present in each list, RS (j) routing
Method is optimal routing plan (SP).Otherwise, matching probability is chosen from list (D), list (T), list (M) respectively
It is worth maximum DTN method for routing, the DTN method for routing that will be chosen from each list synthesizes Optimization route scheme (SP).And
SP is sent to execution module (EM) and equipment room information exchange module (BIM).
(8) execution module (EM) receives the routing plan (SP) from DTN routing plan selecting module (SM) and executes.
Refering to fig. 1 and Fig. 2, the present invention carry out the selection of specific routing plan by following steps:
The DTN routing function of step 1 user unlatching handheld mobile device N.The open command is by handheld mobile device N's
DTN opening module (OM) receives.
Step 2 is first equipment N setting after the DTN opening module (OM) of handheld mobile device N receives open command
Device identifier IDN.Next, which is checked, whether there is arbitrary handheld mobile device M in handheld mobile device N communication range, if
Search result is multiple equipment, thens follow the steps 3, if searching only for out an equipment M, thens follow the steps 4.It is set if not searching out
Standby, handheld mobile device N carries out next round search
Step 3OM obtains the device identifier ID apart from nearest equipment MM, enter step 5.
Step 4OM directly acquires the device identifier ID of equipment MM, enter step 5.
The flag bit (Flag) of the state of DTN routing function is set True by step 5OM, secondly, OM is by equipment M's
IDMIt is sent to equipment room information exchange module (BIM).Flag is sent to DTN method for routing and obtains module (ROM), equipment money
Source sensing module (TM) and user demand collection module (GM).
Step 6 is opened when the equipment room information receiving interface in equipment room information exchange module (BIM) is received from DTN
The ID of module (OM)MAfterwards, receiving device identifier is IDMThe DTN method for routing set C that its holding equipment M of transmission is supported
(M), and by IDMIt is sent to the transmission of equipment room information to connect, C (M) is sent to DTN method for routing filtering module (FM).
Step 7 has received the Flag from DTN opening module (OM) when DTN method for routing obtains module (ROM), if Flag
=True obtains the DTN method for routing set C (N) that the equipment is supported, and sends it to DTN method for routing filtering module
(FM) matching module in.
Step 8DTN method for routing filtering module (FM) filters out common DTN method for routing set C (M& by seeking common ground
N), and by C (M&N) it is sent to DTN routing plan selecting module (SM).
Step 9 user demand collection module (GM) receives the Flag for coming from DTN opening module (OM), if Flag=True,
User demand is then collected, user demand is resolved into demand binary group (demand title, desired content), and the binary group is sent
To DTN routing plan selecting module (SM).
Step 10 device resource sensing module (TM) receives the Flag for coming from DTN opening module (OM), if Flag=True,
Resource situation is resolved to the resource binary group (sky of CPU processor free value, memory by the case where then obtaining the device resource
Spare time value), and the binary group is sent to DTN routing plan selecting module (SM).
Step 11 receives demand binary group, method for routing when the matching module in DTN routing plan selecting module (SM)
Set C (M&N) and resource binary group calculate P using formula (1), formula (2) and formula (3)D(j)、PT(j)、PM(j)。
If PD(j) RS (j) is then stored in demand list of matches (D) by ∈ [α, 1]；If PT(j) RS (j), then be stored in by ∈ [β, 1]
In processor list of matches (T)；If PM(j) RS (j) is then stored in memory matched list (M) by ∈ [γ, 1], otherwise,
Continue to search other method for routing.Wherein, α=0.7, β=0.4, γ=0.6.By list (D), processor list of matches
(T), list (M) is sent to screening module.
For step 12 after screening module receives the list of matching module transmission, list information is checked in search, if the road DTN
It is present in each list by method RS (j), DTN method for routing RS (j) is optimal routing plan (SP).Otherwise, respectively from
Demand matches (D) list, processor matches (T) list, chooses the maximum DTN of matching probability value in memory matched (M)
The DTN method for routing chosen from each list is combined by method for routing, synthesizes a routing plan (SP).And it will
SP is sent to the equipment room information transmission interface in execution module (EM) and equipment room information exchange module (BIM).
The routing plan that equipment room information transmission interface in step 13 equipment room information exchange module (BIM) will receive
(SP) being sent to device flag is IDMHandheld mobile device M in.
Step 14 execution module (EM) executes the routing plan (SP) received.
The beneficial effects of the present invention are embodied in:
(1) present invention can collect the demand of user, perceive the available resources situation of handheld mobile device, select hand-held move
Dynamic equipment idling-resource is supported and meets the DTN routing plan of users ' individualized requirement as far as possible.For example, when user uses
Require relatively low to time delay, safety etc. in application, user is inclined to use simple routing plan；When performance is wanted in user's use
Ask higher in application, user is inclined to the combination of multiple routing plans, to preferably solve the individual demand of user.
(2) handheld mobile device is communicated using optional DTN method for routing in the present invention, and application can reduce hand
The resource overhead of holding equipment improves the delivery rate of message.
Claims (1)
1. a kind of delay-tolerant network personalization routing plan towards handheld mobile device selects system, it is characterised in that:
(1) the delay-tolerant network DTN opening module OM of handheld mobile device N receives the finger that user opens DTN routing function
It enables, and device identifier ID is set for equipment NN, OM, which is searched for, whether there is arbitrary handheld mobile device in equipment N communication range
M；If search result is multiple equipment, OM obtains the device identifier ID apart from nearest equipment MM；If searching only for out one to set
Standby M, OM directly acquire the device identifier ID of equipment MM；OM sets the flag bit Flag of the state of DTN routing function to
True；OM is by IDMIt is sent to the equipment room information exchange module BIM of equipment N, by the state flag bit Flag of DTN routing function
=True is sent to DTN method for routing and obtains module ROM, device resource sensing module TM and user demand collection module GM；
If not searching equipment, handheld mobile device N carries out next round search；
(2) equipment room information exchange module BIM is used for the information exchange of handheld mobile device N and handheld mobile device M, including sets
Information receiving interface, equipment room information-storing device, equipment room information transmission interface between standby:
Equipment room information receiving interface receives the ID from DTN opening module OMM, and receiving device identifier is IDMHand-held shifting
Its DTN method for routing set C (M) supported of dynamic equipment M transmission, whereinBy IDMIt is sent to equipment room information
C (M) is sent to DTN method for routing filtering module by transmission interface；
Equipment room information transmission interface receives the routing side of the DTN routing plan selecting module SM in handheld mobile device N
Case SP, being sent to device flag is IDMHandheld mobile device M in；
(3) user demand collection module GM receives the Flag from DTN opening module OM and collects user if Flag=True
Demand, and user demand is resolved into demand binary group-demand title, then which is sent to DTN by desired content
Routing plan selecting module SM；
(4) device resource sensing module TM receives the Flag from DTN opening module OM, if Flag=True, obtains hand-held
The resource situation of mobile device N, and resource situation is resolved to the sky of resource binary group-CPU processor free value, memory
Spare time value, is sent to DTN routing plan selecting module SM for the binary group；
(5) DTN method for routing obtains Flag of the module ROM reception from DTN opening module OM and obtains if Flag=True
The DTN method for routing set C (N) that the equipment is supported, whereinC is DTN method for routing set；And it is sent to
To DTN method for routing filtering module FM；
(6) DTN method for routing filtering module FM receives the equipment room information-storing device in equipment room information exchange module BIM
Set C (M) and from DTN method for routing obtain module ROM set C (N)；The common road DTN is filtered out by seeking common ground
DTN routing plan selecting module SM is sent to by method set C (M&N), and by C (M&N)；
(7) DTN routing plan selecting module SM receives the method for routing set C (M& from DTN method for routing filtering module FM
N), the resource binary group from device resource sensing module TM and the demand binary group from user demand parsing module GM,
An optimal routing plan SP is filtered out, routing plan SP is that one or more method for routing is composed, by routing side
Case SP is sent to the equipment room information transmission interface in execution module EM and equipment room information exchange module BIM；The routing side DTN
Case selecting module mainly includes matching module and screening module；
Matching module is used to calculate match condition and the device resource free time of the demand of user and the performance of DTN method for routing
The resource consumption match condition of situation and DTN method for routing；For the DTN method for routing in DTN method for routing set C (M&N)
RS (j), wherein j, 0 < j≤| C (M&N) |, | C (M&N) | represent the number of element in set C (M&N)；For DTN method for routing
DTN method for routing RS (j) in set C (M&N), wherein j, 0 < j≤| C (M&N) |, | C (M&N) | it represents first in set C (M&N)
The number of element；Such as formulaCalculate the matching probability P between the bandwidth and user demand bandwidth in RS (j)D
(j)；Wherein,
What uD was indicated is the demand bandwidth value of user, and rD indicates the bandwidth value that can be provided of DTN method for routing；
Calculate the processor consumption value of RS (j) and the matching probability P of device handler free valueT(j)；
Wherein, fT indicates that device handler free value, rT indicate the processor consumption value of RS (j)；
Calculate the matching probability P of the memory consumption value of RS (j) and the memory free value of equipmentM(j)；
Wherein, fM indicates that the memory free value of equipment, rM indicate the memory consumption value of RS (j)；
If PD(j) RS (j) is then stored in demand list of matches D by ∈ [α, 1]；If PT(j) ∈ [β, 1] then stores RS (j)
Into processor list of matches T；If PM(j) RS (j) is then stored in memory matched list M by ∈ [γ, 1], otherwise, after
It is continuous to search other method for routing；Wherein, α, β, γ are selected threshold values；By routing plan SP, processor list of matches T, deposit
Reservoir list of matches M is sent to screening module；
Screening module receives demand list of matches D, processor list of matches T, memory matched list M from matching module,
List information is checked in search, if DTN method for routing RS (j) is present in each list, RS (j) method for routing is optimal
Routing plan SP chooses matching from demand list of matches D, processor list of matches T, memory matched list M respectively
The maximum DTN method for routing of probability value, the DTN method for routing that will be chosen from each list synthesize Optimization route scheme SP,
And Optimization route scheme SP is sent to execution module EM and equipment room information exchange module BIM；
(8) execution module EM receives the routing plan SP from DTN routing plan selecting module SM and executes:
Steps are as follows for the implementation process of delay-tolerant network personalization routing plan selection system towards handheld mobile device:
(1.1) user opens the DTN routing function of handheld mobile device N, which is opened by the DTN of handheld mobile device N
Open module reception；
(1.2) after the DTN opening module of handheld mobile device N receives open command, device identification is set for equipment N first
Accord with IDN；Next is checked with the presence or absence of arbitrary handheld mobile device M in handheld mobile device N communication range, if search result
It for multiple equipment, executes (1.3), if searching only for out an equipment M, executes (1.4), if not searching out equipment, hold movement
Equipment N carries out next round search；
(1.3) OM obtains the device identifier ID apart from nearest equipment MM, into (1.5)；
(1.4) OM directly acquires the device identifier ID of equipment MM, into (1.5)；
(1.5) the flag bit Flag of the state of DTN routing function is set True by OM, secondly, OM is by the ID of equipment MMIt is sent to
Flag=True is sent to DTN method for routing and obtains module ROM, device resource sensing module by equipment room information exchange module
TM and user demand collection module GM；
(1.6) when the equipment room information receiving interface in equipment room information exchange module BIM is received from DTN opening module OM
IDMAfterwards, receiving device identifier is IDMEquipment M transmission its DTN method for routing set C (M) supported, and by IDM
It is sent to equipment room information transmission interface, C (M) is sent to DTN method for routing filtering module FM；
(1.7) Flag from DTN opening module OM is had received when DTN method for routing obtains module ROM, if Flag=True,
The DTN method for routing set C (N) that the equipment is supported is obtained, and sends it to the matching in DTN method for routing filtering module
Module；
(1.8) DTN method for routing filtering module FM filters out common DTN method for routing set C (M&N) by seeking common ground, and by C
(M&N) it is sent to DTN routing plan selecting module SM；
(1.9) user demand collection module GM receives the Flag from DTN opening module OM and collects use if Flag=True
User demand is resolved to demand binary group-demand title, desired content, and the binary group is sent to the road DTN by family demand
By Scheme Choice module SM；
(1.10) device resource sensing module TM receives the Flag from DTN opening module OM, if Flag=True, obtaining should
Resource situation is resolved to the free value of resource binary group-CPU processor free value, memory by the case where device resource, and
The binary group is sent to DTN routing plan selecting module SM；
(1.11) when the matching module in DTN routing plan selecting module (SM) receives the collection of demand binary group, method for routing
After closing C (M&N) and resource binary group, P is calculatedD(j)、PT(j)、PM(j), if PD(j) RS (j), then be stored in by ∈ [α, 1]
In demand list of matches D；If PT(j) RS (j) is then stored in processor list of matches T by ∈ [β, 1]；If PM(j)∈[γ,
1], then RS (j) is stored in memory matched list M, otherwise, continues to search other method for routing, wherein α, β, γ are
Demand list of matches D, processor list of matches T, memory matched list M are sent to screening module by selected threshold value；
(1.12) after screening module receives the list of matching module transmission, list information is checked in search, if the routing side DTN
Method RS (j) is present in each list, then is optimal routing plan SP by DTN method for routing RS (j)；Otherwise, respectively from need
It asks list of matches D, processor list of matches T, choose the maximum DTN routing of matching probability value in memory matched list M
The DTN method for routing chosen from each list is combined by method, synthesizes Optimization route scheme SP；And by best road
Equipment room information transmission interface in execution module EM and equipment room information exchange module BIM is sent to by scheme SP；
(1.13) the equipment room information transmission interface in equipment room information exchange module BIM send the routing plan received hair SP
It is ID to device flagMHandheld mobile device M in；
(1.14) execution module EM executes the routing plan SP received.
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