CN104767796B - A kind of car networking hot point resource management method based on mobile P 2 P - Google Patents
A kind of car networking hot point resource management method based on mobile P 2 P Download PDFInfo
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Abstract
The present invention provides a kind of car networking hot point resource management method based on mobile P 2 P, hot point resource is divided into two class of local and network hotspot resource by invention, judged using the popular degree and water of resource resource whether hot point resource, behavior and hobby for terminal node etc. are different, to the resource requirement of car networking also can corresponding different from characteristic, it is incorporated in car networking, the status of the bandwidth resources anxiety of vehicle and trackside server, utilize mobile P 2 P technology, make full use of bandwidth resources abundant between vehicle, alleviate the bandwidth resources anxiety of vehicle and trackside server, improve the real experiences effect of the multimedia application of terminal node.
Description
Technical field
The present invention relates to car networking resource management fields, more particularly, to a kind of car networking hot spot based on mobile P 2 P
Method for managing resource.
Background technique
Magnanimity intelligent transportation data in car networking, there is an urgent need to seek new, efficient information exchange and information processing
Mode.P-2-P technology (Peer-to-Peer, P2P) provides the new method of nodes information exchange, and node is made to obtain number
According to source be no longer confined to existing several servers, each node can obtain data and provide data.P2P is
The abbreviation of Peer-to-Peer, i.e. peer-to-peer network technology are the computing capability and bandwidth for relying on participant in network, rather than picture
Traditional C/S model equally concentrates on dependence on several less servers.The collaboration for being mainly used in resource is uploaded under
It carries.Mobile P 2 P is the abbreviation of Mobile Peer-to-Peer, that is, moves peer to peer technology, as its name suggests, is exactly answered P2P technology
With the fusion on mobile terminals, being mobile technology and P2P technology.Due to mobile environment particularity itself, such as alterable height
Connection status, shorter network attachment time, unstable network environment, in addition plurality of wireless networks coexists, and operator
The special nature of the performance requirement of grade has studied to mobile P 2 P brings new challenge.
Under car networking environment, behavior and hobby due to terminal node etc. are different, the resource requirement to car networking
The corresponding different from of meeting under car networking environment, will lead to so popular degree of the different resource under same environment is different
A little resources are very high by demand, and some resources requirements are very low, and hot point resource is the very high resource of demand, such as currently
Compare the multimedia application such as popular song, video, advertisement, and the effect of multimedia application determines the real experiences effect of user
Fruit.However, the bandwidth resources of vehicle and trackside server are nervous, but the communication band between vehicle and vehicle in car networking
Wide abundant resource, but all will be greatly to test to bandwidth and communication, together if be downloaded using traditional C/S model
When, the efficiency of downloading will be greatly reduced, and the real experiences effect of terminal node can also can be greatly reduced.
Summary of the invention
The present invention provides a kind of car networking hot point resource management method based on mobile P 2 P, and Lai Shixian makes full use of vehicle
Between abundant bandwidth resources, the bandwidth resources for alleviating vehicle and trackside server are nervous, improve the multimedia of terminal node
The effect of application.
In order to reach above-mentioned technical effect, technical scheme is as follows:
A kind of car networking hot point resource management method based on mobile P 2 P, wherein the car networking of mobile P 2 P includes in network
The heart, the terminal section for being deployed in roadside unit RSU or ordinary node in trackside cloud platform and being deployed on board unit OBU
Point, ordinary node and network center's wired connection, wired connection between ordinary node, between terminal node and terminal node with
It is wirelessly connected between ordinary node, comprising the following steps:
S1: by network center obtain network hotspot resource, by assess within the scope of ordinary node resource hot topic degree M and
Water K and then the local hot point resource of acquisition, are combined into hot point resource for network hotspot resource and local hot point resource；
S2: the resource information list locally possessed is shared to the ordinary node of surrounding by ordinary node, when any common section
When point is received from the resource information list that ordinary node around is shared, which is integrated existing in a manner of being superimposed
Resource information list；
S3: in period of time T, any ordinary node to enter its coverage area terminal node push hot point resource and
Its corresponding IP address information, terminal node establish connection to the ordinary node according to IP address information and download resource.
Further, the resource hot topic degree M is equal to the terminal node in ordinary node coverage area in period of time T 0
The times N of interior unduplicated request downloading resource is divided by period of time T, i.e. M=N/T0.
Further, the water K of the resource passes through integrality and owner of the resource in resource information list
Quantity indicate, integrality of the resource in the resource information list of any ordinary node is higher or possesses the common of the resource
The quantity of node, and the water K for meaning that the resource is bigger.
Further, the process that local hot point resource is obtained in the step S1 is as follows:
In period of time T 1, several local resources that hot topic degree M is more than or equal to popular bottom valve value M0 are obtained, by this
Local resource carries out overall ranking according to the size of water K and hot topic degree M, when P local resource becomes next before choosing
Between ordinary node is pushed to terminal node in cycle T 1 local hot point resource, wherein the size of M0 covers model by ordinary node
The quantity of terminal node in enclosing determines.
Further, the resource information list includes that resource stores list, resource request list and trackside the Resources list,
Wherein, resource storage list includes resource description field and its corresponding IP address information；Resource request list includes resource
Description field, click volume, hot topic degree and water；Trackside the Resources list includes the IP address information and storage of adjacent ordinary node
Local resource description field；Resource storage list is the resource of ordinary node all terminal nodes in entire coverage area
List；Resource request list is statistics of the terminal node to the resource downloading information in entire coverage area；Trackside the Resources list
It is statistics of the ordinary node to the resource situation of ordinary node around.
Further, detailed process is as follows by the step S3:
S61: ordinary node is described to the terminal node push hot point resource and its corresponding resource entered in its coverage area
Field, when end node users select obtain some hot point resource when, terminal node according to the resource description field pushed from
The information of respective resources is obtained in the Resources list of ordinary node, and information is initiated under resource to all ordinary nodes of resource according to this
Request is carried, while ordinary node updates the information of corresponding resource click volume and hot topic degree in resource request list；
S62: terminal node is moved to neighbours' ordinary node from an ordinary node coverage area in downloading resource process
When coverage area, terminal node initiates to obtain the request for the resource downloaded and encloses upper one commonly to new ordinary node
Nodal information just sends the resource if currently common node possesses the resource；If not provided, just with a upper ordinary node
It establishes connection and obtains the resource concurrence and send to terminal node.
Compared with prior art, the beneficial effect of technical solution of the present invention is:
Hot point resource is divided into two class of local and network hotspot resource by the present invention, using the popular degree and water of resource come
Judge resource whether hot point resource, behavior and hobby for terminal node etc. are different, the resource requirement to car networking
The characteristic of the corresponding different from of meeting, is incorporated in car networking, the status of the bandwidth resources anxiety of vehicle and trackside server, benefit
With mobile P 2 P technology, bandwidth resources abundant between vehicle are made full use of, the bandwidth resources for alleviating vehicle and trackside server are tight
, improve the real experiences effect of the multimedia application of terminal node.
Detailed description of the invention
Fig. 1 is the scene figure that mobile P 2 P technology is applied in car networking three-tier architecture figure；
Fig. 2 is that hot point resource of the present invention downloads flow diagram.
Specific embodiment
The attached figures are only used for illustrative purposes and cannot be understood as limitating the patent；
In order to better illustrate this embodiment, the certain components of attached drawing have omission, zoom in or out, and do not represent actual product
Size；
To those skilled in the art, it is to be understood that certain known features and its explanation, which may be omitted, in attached drawing
's.
The following further describes the technical solution of the present invention with reference to the accompanying drawings and examples.
Embodiment 1
As shown in Figure 1, the car networking in the present invention based on mobile P 2 P includes network center, ordinary node and terminal node,
Ordinary node is deployed in roadside unit RSU or trackside cloud platform, and terminal node is deployed on board unit OBU.Common section
Point and network center's wired connection, are connected by cable network between ordinary node, between terminal node and terminal node and
It is connected by wireless communication between ordinary node.Wherein, ordinary node be responsible for caching resource, Content Management, to terminal node into
Row authentication management and offer resource searching service；Terminal node is the requesting party of resource and shares square.
Specific embodiment based on the framework the method for the present invention includes the following steps:
1, hot point resource include in the network obtained by network center before ranking 10 hot point resource { Res1 ...
Res10 } and assess the homogeneity resource hot topic degree M and water K within the scope of ordinary node RSU and the local hot point resource that obtains.
Wherein, under the conditions of meeting popular degree M >=threshold values M0 of a certain resource, it is by this that whether a certain resource, which becomes local hot point resource,
The size of the water K and hot topic degree M of resource are comprehensive to be determined: the local hot point resource that will acquire is according to water K and hot topic
The size for spending M carries out overall ranking, chooses first 20 local hot point resources { Res11 ... Res30 } as general in next 10S
The local hot point resource that logical node is pushed to terminal node.Wherein, M be equal to RSU coverage area in terminal node in 10s not
The times N of duplicate request downloading homogeneity resource is divided by 10, i.e. M=N/10.Wherein, the value of water K and corresponding resource exist
Resource stores integrality and the positive correlation of owner's quantity in list.The size of M0 is determined by the quantity of OBU in RSU coverage area
It is fixed.OBU uploads shared resource information list to RSU every 3s, when RSU receives the shared resource information list from OBU, then
Existing resource information in the Resources list is updated with coverage mode.The Resources list includes resource storage list, resource request list
With trackside the Resources list, RSU is deposited in.Wherein, resource storage list includes resource description field and its corresponding IP
Location information；Resource request list (table 1 shows) includes resource description field, click volume, hot topic degree and water；Trackside the Resources list
(table 2 shows) includes the IP address information of adjacent ordinary node and the local resource description field of storage.Resource stores list
The Resources list of RSU OBU in entire coverage area；Resource request list is RSU to the resource downloading in entire coverage area
The statistics of information facilitates arrangement hot resource；Trackside the Resources list is statistics of the RSU to the resource situation of surrounding neighbours RSU, side
Just the trans-regional downloading resource of OBU.
1 resource request list of table
| Resource name | Click volume | Popular degree | Water |
| ResA | N0 | N0/T | K0 |
| ResB | N1 | N1/T | K1 |
| ResC | N2 | N2/T | K2 |
| …… | …… | …… | …… |
| ResM | Nm | Nm/T | Km |
2 trackside the Resources list of table
| IP1 | ResA1 | ResA2 | ResA3 | …… | ResAn |
| IP2 | ResB1 | ResB2 | ResB3 | …… | ResBn |
| …… | …… | …… | …… | …… | …… |
| IPM | ResM1 | ResM2 | ResM3 | …… | ResMn |
2, the resource information list locally possessed is shared to the RSU of surrounding by ordinary node RSU.When a certain RSU is received
When shared resource information list from RSU around, this RSU integrates existing resource-sharing letter around in a manner of being superimposed
Breath.
3, in 10s, it is hot point resource { Res1 ... Res30 } and its right that ordinary node RSU0 is pushed to terminal node OBU0
The IP address information { ip0 ... ipn } answered, OBU0 establish connection to resource segment owner according to { ip0 ... ipn } and download
Resource.Its detailed implementation process is as follows, as shown in Figure 2:
A.RSU0 pushes { Res1 ... Res30 } to OBU0 is entered.When OBU0 selects to obtain some hot resource Resi,
Wherein, OBU0 obtains the list information { ip0 ... of respective resources according to Resi from the Resources list of RSU0
Ipn }, wherein n < m, and { ip0 ... ipn } to Resource Owner initiates resource download request according to this.RSU0 more new resources simultaneously
The Ni and Mi of Resi in request list.
B.OBU0 is during downloading Resi, and when being moved to neighbours ordinary node RSU1 from RSU0, OBU0 is initiated to RSU1
It obtains the Resources list downloaded and requests and enclose RSU0 information, if RSU1 possesses the list information of Resi, replying should
List information；If it is not, obtain the Resources list information to RSU0, and by information-reply OBU0.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
Made any modifications, equivalent replacements, and improvements etc., should be included in the claims in the present invention within the spirit and principle of invention
Protection scope within.
Claims (6)
1. a kind of car networking hot point resource management method based on mobile P 2 P, wherein the car networking of mobile P 2 P includes in network
The heart, the terminal section for being deployed in roadside unit RSU or ordinary node in trackside cloud platform and being deployed on board unit OBU
Point, ordinary node and network center's wired connection, wired connection between ordinary node, between terminal node and terminal node with
It is wirelessly connected between ordinary node, which comprises the following steps:
S1: network hotspot resource is obtained by network center, by assessing the resource hot topic degree M and high-quality within the scope of ordinary node
It spends K and then obtains local hot point resource, network hotspot resource and local hot point resource are combined into hot point resource；
S2: the resource information list locally possessed is shared to the ordinary node of surrounding by ordinary node, when any ordinary node connects
When receiving from the resource information list that ordinary node around is shared, which integrates existing resource in a manner of being superimposed
Information list；
S3: in period of time T, any ordinary node is to the terminal node push hot point resource and its right for entering its coverage area
The IP address information answered, terminal node establish connection to hot point resource segment owner according to IP address information and download money
Source.
2. the car networking hot point resource management method according to claim 1 based on mobile P 2 P, which is characterized in that described
Resource hot topic degree M is equal to the unduplicated request in period of time T 0 of the terminal node in ordinary node coverage area and downloads resource
Times N divided by period of time T, i.e. M=N/T0.
3. the car networking hot point resource management method according to claim 1 based on mobile P 2 P, which is characterized in that described
The water K of resource indicates that the resource is in office by the quantity of integrality and owner of the resource in resource information list
Integrality in the resource information list of one ordinary node is higher or possesses that the quantity of the ordinary node of the resource to be meant that
The water K of the resource is bigger.
4. the car networking hot point resource management method according to claim 1 based on mobile P 2 P, which is characterized in that described
The process that local hot point resource is obtained in step S1 is as follows:
In period of time T 1, several local resources that hot topic degree M is more than or equal to popular bottom valve value M0 are obtained, by the local
Resource carries out overall ranking according to the size of water K and hot topic degree M, and P local resource becomes next week time before choosing
The local hot point resource that ordinary node is pushed to terminal node in phase T1, wherein the size of M0 is by ordinary node coverage area
Terminal node quantity determine.
5. the car networking hot point resource management method according to claim 1 based on mobile P 2 P, which is characterized in that described
Resource information list includes resource storage list, resource request list and trackside the Resources list, wherein resource stores list and includes
Resource description field and its corresponding IP address information；Resource request list includes resource description field, click volume, hot topic degree
And water；Trackside the Resources list includes the IP address information of adjacent ordinary node and the local resource description field of storage；
Resource storage list is the Resources list of ordinary node all terminal nodes in entire coverage area；Resource request list is eventually
Statistics of the end node to the resource downloading information in entire coverage area；Trackside the Resources list is ordinary node to common section around
The statistics of the resource situation of point.
6. the car networking hot point resource management method according to claim 5 based on mobile P 2 P, which is characterized in that described
Detailed process is as follows by step S3:
S61: ordinary node pushes hot point resource and its corresponding resource description field to the terminal node entered in its coverage area,
When end node users select to obtain some hot point resource, terminal node is saved according to the resource description field pushed from common
The information of respective resources is obtained in the Resources list of point, and information is asked to all ordinary nodes initiation resource downloadings of resource according to this
It asks, while ordinary node updates the information of corresponding resource click volume and hot topic degree in resource request list；
S62: terminal node is moved to the covering of neighbours' ordinary node in downloading resource process, from an ordinary node coverage area
When range, terminal node initiates to obtain the request for the resource downloaded and encloses a upper ordinary node to new ordinary node
Information just sends the resource if currently common node possesses the resource；If not provided, just being established with a upper ordinary node
It connects and obtains the resource concurrence and send to terminal node.
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| CN111064997B (en) * | 2018-10-16 | 2021-11-16 | 深圳市云帆加速科技有限公司 | Resource pre-distribution method and device |
| CN110011962B (en) * | 2019-02-21 | 2021-10-01 | 国家计算机网络与信息安全管理中心 | Method for identifying service data of Internet of vehicles |
| CN112449248A (en) * | 2019-08-28 | 2021-03-05 | 杭州海康威视系统技术有限公司 | Video data on demand method and device and video on demand node |
| CN116405563B (en) * | 2023-06-08 | 2023-08-18 | 湖南快乐阳光互动娱乐传媒有限公司 | Resource acquisition method and system based on point-to-point content distribution network |
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| KR100612496B1 (en) * | 2004-05-11 | 2006-08-14 | 삼성전자주식회사 | Method for service discovery in Mobile Ad-hoc Network |
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| CN101059808A (en) * | 2007-03-26 | 2007-10-24 | 徐礼岗 | Quality and on-line number P2P video frequency search system and method |
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