CN106162924A - A kind of methods, devices and systems of access network - Google Patents
A kind of methods, devices and systems of access network Download PDFInfo
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- CN106162924A CN106162924A CN201510185794.8A CN201510185794A CN106162924A CN 106162924 A CN106162924 A CN 106162924A CN 201510185794 A CN201510185794 A CN 201510185794A CN 106162924 A CN106162924 A CN 106162924A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
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Abstract
A kind of method of access network, device and the access system that the embodiment of the present invention provides, including: OBU receives the random access parameter that RSU sends；Wherein, random access parameter includes: access running time-frequency resource and the random access guiding of channel, access the running time-frequency resource of channel for carrying the random access guiding that OBU sends when accessing RSU, random access guiding includes non-competing random access guiding and competition random access guiding, when OBU has high-priority service to need to access RSU, then the running time-frequency resource of non-competing random access guiding and access channel is used to carry out non-competing Stochastic accessing；Wherein it is desired to the business accessing RSU includes: high-priority service and/or general service.Pass through such scheme, it is possible to the vehicle solving to cause due to RSU skewness be obtain bandwidth, problem that channel resource produces disorderly competition.
Description
Technical field
The present invention relates to mobile communication technology, the methods, devices and systems of a kind of access network.
Background technology
Along with economic society high speed development, China's automobile guarantee-quantity increases rapidly, and road traffic accident is frequent
Occur, it has also become affecting one of key factor of China's public security perception in recent years, traffic safety is asked
Topic has become as affect one of social harmony and basic problem of improving People's livelihood.China in the urgent need to from technology,
The each side such as policy, education improves traffic safety, and wherein promoting vehicle safety design is important set therein
Become part.
The technology promoting vehicle safety is broadly divided into passive security technology and active safety technologies.Passive security
Technology is after occurring in accident, to personnel and the protection of article in car, outside car；Active safety technologies is used
Have an accident in preventing and reduce vehicle, it is to avoid personnel come to harm；Active safety technologies is modern vehicle
The emphasis of safe practice development and trend.
Collision warning systems based on communication, by utilizing advanced wireless communication technology and generation information
Treatment technology, it is achieved the real-time information interaction between Che Yuche, car and trackside infrastructure, informs mesh each other
Front state (including the position of vehicle, speed, acceleration, driving path) and the road environment known
Information, collaborative sensing road hazard condition, multiple anti-collision warning information is provided in time, prevents road traffic
The generation of security incident, becomes current various countries and attempts a kind of new thinking of solving road traffic safety problem.
Car networking (Vehicle to Everything, V2X): refer to the sensing by being loaded on vehicle
Device, car-mounted terminal and electronic tag provide information of vehicles, use various communication technology to realize car and car
(Vehicle to Vehicle, V2V), car and people (Vehicle to Pedestrian, V2P), car with
Interconnecting in road (infrastructure) (Vehicle to Infrastructure, V2I), and puts down at information network
On platform extract information, share etc. effectively utilizes, and vehicle carries out effective management and control and provides comprehensive
Service.Fig. 1 is the schematic diagram being sent traffic, schedule information by network information platform to vehicle.
Recently as the development of new mobile communication technology, occur in that use Long Term Evolution in the world
(Long Term Evolution, LTE) technology solves research based on car networked communications application.
Roadside communication unit RSU (Road Side Unit) can receive vehicle request, it is ensured that vehicle accesses mutually
Networking Internet, has the function of gateway；Additionally, it also has data operation, the function storing, forwarding.
Vehicle and the communication (Vehicle to Road Side Unit, V2R) of roadside unit, it is possible to be referred to as V2I
(Vehicle to Infrastructure).Main feature during V2R communication includes: during (1) RSU broadcast,
Broadcast message is simply sent to all vehicles in its coverage；(2) it is that single-hop passes between RSU and vehicle
Defeated, prevent the bag transmission adverse effects such as success rate is low, network throughput is low that multi-hop brings；(3)RSU
Can quickly receive detect through vehicle, traffic lights and some traffic informations, and these information
Carry out processing, resequence, screen after issue vehicle again.Above three aspect ensures that vehicle is through RSU
Time, it is connected, by setting up with RSU, access Internet or the download ensureing that vehicle can be reliable, real-time
The data of RSU storage.
RSU has short distance and covers (hundreds of rice), cheap, easy deployment and high data access speed (greatly
About l0Mbps) feature, for existing V2R communicate in board units (On Board Unit, OBU)
There is problems in that when accessing RSU
The deployment of RSU is not managed collectively, RSU bandwidth, channel resource are limited, and this results in RSU
Distribution exist problem of non-uniform and vehicle in order to obtain more bandwidth, channel resource and produce unordered competing
Strive behavior.Under City scenarios, when there is overlapping region between multiple RSU, vehicle accesses RSU plan
Load imbalance between RSU can be caused the most at that time, reduced network resource utilization.
Summary of the invention
In order to solve above-mentioned technical problem, embodiments provide a kind of method of access network, dress
Put and system, it is possible to solving the vehicle owing to RSU skewness causes is acquisition bandwidth, channel resource
And the problem producing disorderly competition.
A kind of method embodiments providing access network, described method includes:
Board units OBU receives the random access parameter that roadside unit RSU sends；Wherein, described with
Machine access parameter includes: access the running time-frequency resource of channel and random access guiding, described access channel time
Frequently resource is for carrying the described random access guiding that described OBU sends, institute when accessing described RSU
State random access guiding and include non-competing random access guiding and competition random access guiding；
When described OBU has high-priority service to need to access described RSU, then use described non-competing
The running time-frequency resource of random access guiding and described access channel carries out non-competing Stochastic accessing；Wherein, need
The business accessing described RSU includes: high-priority service and/or general service.
Further, described method also includes:
When described OBU does not has high-priority service to need to access described RSU, then use described competition
The running time-frequency resource of random access guiding and described access channel is at war with Stochastic accessing.
Further, described board units OBU receives the random access parameter that roadside unit RSU sends
Including:
If described OBU is in wireless heterogeneous networks (Radio Resource Control, RRC) connection mode
Formula, described OBU receives the RRC signaling that described RSU sends, comprises in described RRC signaling
State random access parameter.
Further, described board units OBU receives the random access parameter that roadside unit RSU sends
Including:
If described OBU is in idle pulley, described OBU receives the broadcast that described RSU sends,
Described broadcast includes described random access parameter.
The embodiment of the present invention also provides for the method for another kind of access network, and described method includes:
Roadside unit RSU determines random access parameter；Wherein, described random access parameter includes: access
The running time-frequency resource of channel and random access guiding, the running time-frequency resource of described access channel is used for carrying OBU
The described random access guiding sent when accessing described RSU, described random access guiding includes non-competing
Random access guiding and competition random access guiding；
The roadside unit RSU all board units OBU in coverage send described Stochastic accessing ginseng
Number；
Wherein, described random access parameter includes: access running time-frequency resource and the random access guiding of channel,
The running time-frequency resource of described access channel for carry OBU access described RSU time send described at random
Access lead, described random access guiding includes non-competing random access guiding and competition random access guiding.
Further, the described roadside unit RSU all board units OBU in coverage send
Described random access parameter includes:
When OBU is radio resource control RRC connection mode, and described RSU sends to described OBU
RRC signaling, wherein, includes described random access parameter in described RRC signaling.
Further, the described roadside unit RSU all board units OBU in coverage send
Described random access parameter includes:
When OBU is idle pulley, described RSU sends broadcast, wherein, institute to described OBU
State and broadcast includes described random access parameter.
The embodiment of the present invention provides a kind of subscriber equipment, and described subscriber equipment includes:
Receive unit, for receiving the random access parameter that roadside unit RSU sends；Wherein, described with
Machine access parameter includes: access the running time-frequency resource of channel and random access guiding, described access channel time
Frequently resource is for carrying the described random access guiding that described subscriber equipment sends when accessing described RSU,
Described random access guiding includes non-competing random access guiding and competition random access guiding；
Access unit, is used for when described subscriber equipment has high-priority service to need to access described RSU,
The running time-frequency resource then using described non-competing random access guiding and described access channel carry out non-competing with
Machine accesses；Wherein it is desired to the business accessing described RSU includes: high-priority service and/or common industry
Business.
Further, described access unit is additionally operable to:
When described subscriber equipment does not has high-priority service to need to access described RSU, then use described competing
Strive the running time-frequency resource of random access guiding and described access channel to be at war with Stochastic accessing.
Further, described reception unit specifically for:
If described subscriber equipment is in radio resource control RRC connection mode, receives described RSU and send
RRC signaling, described RRC signaling includes described random access parameter.
Further, described reception unit specifically for:
If described subscriber equipment is in idle pulley, receive described RSU send broadcast, described extensively
Broadcast and message includes described random access parameter.
The embodiment of the present invention provides a kind of base station, and described base station includes:
Determine unit, be used for determining random access parameter；Wherein, described random access parameter includes: connect
Entering running time-frequency resource and the random access guiding of channel, the running time-frequency resource of described access channel is used for carrying OBU
The described random access guiding sent when accessing described RSU, described random access guiding includes non-competing
Random access guiding and competition random access guiding；
Transmitting element, sends described Stochastic accessing for all board units OBU in coverage
Parameter.
Further, described transmitting element specifically for:
When OBU is radio resource control RRC connection mode, send RRC signaling to described OBU,
Wherein, described RRC signaling includes described random access parameter.
Further, described transmitting element specifically for:
When OBU is idle pulley, send broadcast, wherein, described broadcast to described OBU
In include described random access parameter.
The embodiment of the present invention also provides for a kind of access system, and described system includes subscriber equipment as above
And base station.
A kind of method of access network, device and the access system that the embodiment of the present invention provides, OBU receives
The random access parameter that RSU sends；Wherein, random access parameter includes: access the running time-frequency resource of channel
And random access guiding, access the running time-frequency resource of channel for carrying what OBU sent when accessing RSU
Random access guiding, random access guiding includes non-competing random access guiding and competition random access guiding,
When described OBU has high-priority service to need to access described RSU, then use described non-competing at random
The running time-frequency resource of access lead and described access channel carries out non-competing Stochastic accessing；Wherein it is desired to connect
The business entering described RSU includes: high-priority service and/or general service.By such scheme, energy
Enough vehicles solved owing to RSU skewness causes produce unordered competing for acquisition bandwidth, channel resource
The problem striven.
Other features and advantages of the present invention will illustrate in the following description, and, partly from froming the perspective of
Bright book becomes apparent, or understands by implementing the present invention.The purpose of the present invention is excellent with other
Point can be realized by structure specifically noted in description, claims and accompanying drawing and be obtained.
Accompanying drawing explanation
Accompanying drawing is used for providing being further appreciated by technical solution of the present invention, and constitutes one of description
Point, it is used for explaining technical scheme together with embodiments herein, is not intended that the present invention
The restriction of technical scheme.
Fig. 1 is the schematic diagram being sent traffic, schedule information by network information platform to vehicle；
The schematic flow sheet of the method for a kind of access network that Fig. 2 provides for the embodiment of the present invention；
The schematic flow sheet of the embodiment one that Fig. 3 provides for the embodiment of the present invention；
Fig. 4 is the schematic flow sheet of the embodiment two that the embodiment of the present invention provides；
Fig. 5 is the schematic flow sheet of the embodiment three that the embodiment of the present invention provides；
The structural representation of the subscriber equipment that Fig. 6 provides for the embodiment of the present invention；
The structural representation of the base station that Fig. 7 provides for the embodiment of the present invention；
The structural representation of the access system that Fig. 8 provides for the embodiment of the present invention.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing
Embodiments of the invention are described in detail.It should be noted that in the case of not conflicting, this Shen
Embodiment in please and the feature in embodiment can mutual combination in any.
Can be at the computer of such as one group of computer executable instructions in the step shown in the flow chart of accompanying drawing
System performs.And, although show logical order in flow charts, but in some cases,
Can be to be different from the step shown or described by order execution herein.
Board units OBU in the embodiment of the present invention is arranged in user equipment (UE), roadside unit RSU
Being arranged in base station, wherein, subscriber equipment includes but not limited to handheld terminal, panel computer, intelligence hands
The terminals such as machine, individual PC, base station includes but not limited to the base station of LTE system.
The embodiment of the present invention provides a kind of method of access network, based on OBU side, as in figure 2 it is shown,
The method includes:
Step 101, OBU receive the random access parameter that RSU sends；Wherein, random access parameter
Including: accessing running time-frequency resource and the random access guiding of channel, the running time-frequency resource accessing channel is used for carrying
The random access guiding that OBU sends when accessing RSU, random access guiding includes non-competing connecing at random
Enter leading and competition random access guiding.
Wherein, above-mentioned non-competing random access guiding or competition random access guiding each mean certain length
Serial No., RSU can according to predefined good rule random access guiding is divided into competition with
Machine access lead and non-competing random access guiding；OBU needs the business accessing RSU to include: Gao You
First level business or general service, non-competing random access guiding for high-priority service, as traffic accident information,
Road emergency information etc.；Competition random access guiding for general service, as periphery hotel information,
Fuel station information etc..
Further, in step 101: OBU receives the random access parameter that RSU sends, can
With particularly as follows:
If OBU is in RRC connection mode, OBU receives the RRC signaling that RSU sends, RRC
Signaling includes random access parameter.
Concrete, for being in the OBU of RRC connection mode, RSU use RRC signaling send with
Machine access parameter, particularly, when OBU has high-priority service access request to switch from current RSU
Access other RSU or OBU when sending the situations such as new confirmation message to RSU, directly utilize RRC
Signaling directly transmits non-competing random access guiding and accesses the running time-frequency resource of channel.
Further, in step 101: OBU receives the random access parameter that RSU sends, can
With particularly as follows:
If OBU is in idle pulley, OBU receives the broadcast that RSU sends, and wraps in broadcast
Containing random access parameter.
Concrete, for being in the OBU of idle pulley, broadcast can be used to send Stochastic accessing ginseng
Number, it is also possible to simultaneously indicate that the type of service that can use non-competing random access guiding is high-priority service.
It should be noted that in embodiments of the present invention, for competition random access guiding, it is possible to use
Broadcast sends, and can use and periodically send, for OBU all of in RSU overlay area,
Can be used for the situation that OBU is initially accessed.
Step 102, when OBU have high-priority service need access RSU time, then use non-competing with
The running time-frequency resource of machine access lead and access channel carries out non-competing Stochastic accessing；Wherein it is desired to access
The business of RSU includes: high-priority service and/or general service.
Concrete, if this OBU is RRC connected state, then OBU from RSU send non-competing with
Selecting one in machine access lead and use the running time-frequency resource accessing channel to be sent to this RSU, request accesses
This RSU, this RSU are that this OBU distributes ascending resource, and this OBU sends out at the ascending resource being assigned to
Send dispatch request；If this OBU is Idle state, then this OBU is from the broadcast that RSU sends
The non-competing random access guiding comprised selects after one and uses the running time-frequency resource accessing channel to be sent to
This RSU；This OBU sends the request of non-competing random access guiding to RSU and accesses this RSU, this RSU
Distributing ascending resource for this OBU, this OBU sends dispatch request at the ascending resource being assigned to.
It should be noted that OBU can judge whether the business needing to access RSU has height preferential voluntarily
Level business.Such as: when OBU has multiple service needed to access RSU, it is judged that the attribute of each business
Whether meet the attribute conditions of the high-priority service preset；When the attribute having a business meets default
During the attribute conditions of high-priority service, it is determined that have high-priority service to need to access RSU；When each
The attribute of business is all unsatisfactory for the attribute conditions of the high-priority service preset, it is determined that do not have high priority
Service needed access RSU namely the business needing access RSU are general service.
Exemplary, it is assumed that the attribute conditions of the high-priority service preset is: comprise traffic accident information, then
Traffic accident information is comprised, it is determined that have high priority if the business of OBU has in the attribute of a business
Service needed accesses RSU.
Further, as in figure 2 it is shown, the method can also include:
Step 103, when OBU do not have high-priority service need access RSU time, then use competition with
Machine access lead and access the running time-frequency resource of channel and be at war with Stochastic accessing.
Concrete, that this OBU comprises in the broadcast that this RSU sends competition random access guiding
Middle selection one accesses.
If it is noted that step 102 or step 103 having two or more OBU to select
Identical random access guiding sends access request, then the OBU mark in the response message that RSU sends
Knowing identical with ascending resource, the OBU of the identical random access guiding of the most each transmission can receive identical
, now there is random access request conflict in response message.If it occur that preamble collisions, then OBU selects
Retreating and again access, wherein backoff time can be specified by RSU.If be successfully accessed, then RSU is OBU
Distribution ascending resource, OBU sends dispatch request at the ascending resource of distribution.
The method of a kind of access network that the embodiment of the present invention provides, OBU receives the random of RSU transmission
Access parameter；Wherein, random access parameter includes: access running time-frequency resource and the random access guiding of channel,
The running time-frequency resource accessing channel is used for carrying the random access guiding that OBU sends when accessing RSU, with
Machine access lead includes non-competing random access guiding and competition random access guiding, when OBU has Gao You
When first level service needed accesses RSU, then use non-competing random access guiding and access the time-frequency of channel
Resource carries out non-competing Stochastic accessing；Wherein it is desired to the business accessing RSU includes: high-priority service
And/or general service.By the scheme of the embodiment of the present invention, it is possible to solve due to RSU skewness
The vehicle caused is to obtain the problem that bandwidth, channel resource produce disorderly competition.
The embodiment of the present invention also provides for the method for another kind of access network, and based on RSU side, the method includes
Following steps:
The RSU all OBU in coverage send random access parameter；
Wherein, random access parameter includes: accesses running time-frequency resource and the random access guiding of channel, accesses
The running time-frequency resource of channel, for carrying the random access guiding that OBU sends when accessing RSU, connects at random
Enter leading include non-competing random access guiding and competition random access guiding.
Further, the above-mentioned RSU all board units OBU in coverage send Stochastic accessing
Parameter can particularly as follows:
When OBU is RRC connection mode, RSU sends RRC signaling, wherein, RRC to OBU
Signaling includes random access parameter.
Further, the above-mentioned RSU all board units OBU in coverage send Stochastic accessing
Parameter can particularly as follows:
When OBU is idle pulley, and RSU sends broadcast to OBU, wherein, broadcast is wrapped
Containing random access parameter.
Need explanation time, existing OBU accesses in the scheme of RSU, and RSU accesses self to wanting
All OBU send random access guiding, the OBU then receiving random access guiding is at war with
Stochastic accessing, accordingly, with respect to prior art, the RSU in the embodiment of the present invention is to coverage
Interior all OBU send non-competing random access guiding, competition random access guiding and are used for carrying
The running time-frequency resource accessing channel of aforementioned two kinds of random access guidings such that it is able to solve owing to RSU is distributed
The uneven vehicle that causes be obtain bandwidth, problem that channel resource produces disorderly competition.
In order to enable those skilled in the art to be more clearly understood that the technical scheme that the present invention provides, below
By specific embodiment, the method for the access network that the present invention provides is described in detail:
Embodiment one:
The present embodiment be for be in RRC connected state OBU have high-priority service need non-competing at random
The scene accessed；Fig. 3 is the flow chart of embodiment one, as it is shown on figure 3, the present embodiment includes following step
Rapid:
Step 201, RSU are that OBU distributes non-competing random access guiding.
This OBU is in RRC connected state, and RSU is divided to this OBU transmission by special RRC signaling
The non-competing access lead joined and the running time-frequency resource accessing channel.Such as OBU prepares from other RSU
Switching accesses current RSU, or RSU is ready for sending downlink data but the uplink loss etc. of discovery OBU
Deng, RSU sends non-competing access lead to OBU.
Step 202, OBU send random access request to RSU.
This OBU uses the non-competing targeting sequencing received to send random access request message, Stochastic accessing
Request can comprise the up signaling type that needs send.
Step 203, RSU are that OBU distributes ascending resource.
RSU distributes ascending resource according to the request of OBU, and ascending resource is for sending the scheduling of this OBU
Request.
Step 204, OBU send dispatch request.
This OBU sends dispatch request at the ascending resource being assigned to.This dispatch request contains OBU
The resource requirement of the high-priority service sent.
It should be noted that OBU sends dispatch request to RSU shows that OBU has been successfully accessed RSU.
Embodiment two:
The present embodiment is the scene that the OBU for general service competes Stochastic accessing RSU；Such as Fig. 4 institute
Showing, the present embodiment comprises the following steps:
Step 301, RSU send random access parameter.
RSU sends random access parameter by broadcast, and random access parameter at least includes: access letter
The running time-frequency resource in road, competes random access guiding.Wherein, competition random access guiding is multiple leading sequences
The resource pool that row are constituted, OBU can therefrom randomly choose one and send access request.Access channel time
Frequently resource is used for sending competition random access leader sequence；
Step 302, OBU request accesses RSU.
This OBU selects one to send Stochastic accessing from the competition random access leader sequence that RSU distributes
Request.
Step 303, RSU send response message to OBU.
After RSU receives random access request, send random access request response message, response to OBU
Message includes at least: OBU identifies (such as community-Radio Network Temporary Identifier C-RNTI), up money
Source.Wherein OBU mark is for identifying OBU in a subsequent communication, and ascending resource is sent out for this OBU
Send dispatch request.
It is noted that if step 302 has two or more OBU have selected identical with
Machine access lead sends access request, then the OBU mark in the response message that RSU sends and up money
Source is identical, and the OBU of the most each transmission same preamble can receive identical response message.Now occur
Random access request conflicts.
Step 304, OBU judge whether to clash.If it is, turn to step 305, otherwise turn to
Step 306.
OBU judges whether to clash by the following method: OBU sends at the ascending resource being assigned to
Dispatch request, the response message not receiving RSU or the response message receiving RSU but can not be correct
Decoding, or receive the response message of RSU, but find the mark of other OBU in the response message,
Then OBU determines the conflict that there occurs random access request.If OBU receives the response message of RSU,
And be correctly decoded, and the mark of oneself being detected in the response message, then no conflict occurred in explanation.
Step 305, OBU initiate random access request again.
OBU initiates random access request again after retreating a period of time, wherein the scope of backoff time t by
RSU specify, as be sent in step 303 OBU, OBU (0, t) in randomly choose a retrogressing
Time T, initiates random access request process again at T moment OBU.
Again the maximum times initiated is specified by RSU, if initiating to send out most at random please of number of times at OBU
Ask the most unsuccessful, then random access procedure failure.
Step 306, OBU send to RSU and confirm message.
OBU sends to RSU and confirms message " ACK ", shows Stochastic accessing success.
Embodiment three:
The present embodiment is to have high-priority service to need the field of non-competing access RSU for Idle state OBU
Scape；As it is shown in figure 5, the present embodiment comprises the following steps:
Step 401, RSU send random access parameter.
RSU sends random access parameter by broadcast.Random access parameter includes: before Stochastic accessing
Leading and access the running time-frequency resource of channel, random access guiding includes: non-competing random access guiding and competition
Random access guiding, particularly, it is also possible in random access guiding, increase a type of service mark,
For indicating that this random access guiding is non-competing random access guiding or competition random access guiding.
Step 402, OBU send to RSU access request message.
Owing to the business of this OBU is high-priority service, before this OBU can be according to above-mentioned Stochastic accessing
Type of service mark in leading selects a non-competing random access guiding to send Stochastic accessing to RSU please
Seek message.
Step 403, RSU send response message to OBU.
The RSU receiving access request sends response message to OBU, includes at least: OBU in response message
Mark (such as community-Radio Network Temporary Identifier C-RNTI), ascending resource.Wherein OBU mark is used
In identifying OBU in a subsequent communication, ascending resource sends dispatch request for OBU.
It is noted that if step 402 has two or more OBU have selected identical with
Machine access lead sends access request, then the OBU mark in the response message that RSU sends and up money
Source is identical, and the OBU of the most each transmission same preamble can receive identical response message.Now occur
Random access request conflicts.Even if the OBU sending high-priority service is less simultaneously, but as long as having two
Individual or above OBU initiates to ask still simultaneously it may happen that access request conflict.
Step 404, OBU determine whether conflict.If it is, turn to step 405, otherwise turn to step
Rapid 406.
This step is similar with step 304, repeats no more here.
Step 405, OBU initiates random access request again.
This step is similar with step 305, and difference is: for the business of high priority, OBU sends out again
The interval time playing random request is more shorter than general service, and the maximum of this time interval is set by RSU.
Step 406, OBU send to RSU and confirm message.
This confirmation message is used for indicating this OBU to be successfully accessed RSU, next this OBU can further with
The data of RSU transmission high-priority service.
The embodiment of the present invention provides a kind of subscriber equipment 10, is provided with OBU, such as Fig. 6 in this subscriber equipment
Shown in, this subscriber equipment 10 includes:
Receive unit 11, for receiving the random access parameter that roadside unit RSU sends；Wherein, with
Machine access parameter includes: access running time-frequency resource and the random access guiding of channel, accesses the time-frequency money of channel
Source is for carrying the random access guiding that OBU sends when accessing RSU, and random access guiding includes non-
Competition random access guiding and competition random access guiding；
Access unit 13, is used for when subscriber equipment 10 has high-priority service to need to access RSU, then
The running time-frequency resource using non-competing random access guiding and access channel carries out non-competing Stochastic accessing；Its
In, need the business accessing RSU to include: high-priority service and/or general service.
Further, access unit 13 is additionally operable to:
When subscriber equipment 10 does not has high-priority service to need to access RSU, then competition is used to connect at random
Enter running time-frequency resource that is leading and that access channel to be at war with Stochastic accessing.
Further, receive unit 11 specifically for:
If subscriber equipment 10 is in RRC connection mode, receive the RRC signaling that RSU sends, RRC
Signaling includes random access parameter.
Further, receive unit 11 specifically for:
If subscriber equipment 10 is in idle pulley, receive the broadcast that RSU sends, in broadcast
Include random access parameter.
The present embodiment is used for realizing above-mentioned each method embodiment, the workflow of unit in the present embodiment
See the description in above-mentioned each method embodiment with operation principle, do not repeat them here.
The subscriber equipment that the embodiment of the present invention provides, receives the random access parameter that RSU sends；Wherein,
Random access parameter includes: accesses running time-frequency resource and the random access guiding of channel, accesses the time-frequency of channel
Resource is for carrying the random access guiding that this subscriber equipment sends, random access guiding when accessing RSU
Including non-competing random access guiding and competition random access guiding, when subscriber equipment has high-priority service
When needing to access RSU, then the running time-frequency resource of non-competing random access guiding and access channel is used to carry out
Non-competing Stochastic accessing；Wherein it is desired to the business accessing RSU includes: high-priority service and/or general
Logical business.By the scheme of the embodiment of the present invention, it is possible to solve the car caused due to RSU skewness
For obtaining bandwidth, channel resource and the problem that produces disorderly competition.
The embodiment of the present invention provides a kind of base station 20, is provided with RSU in this base station 20, as it is shown in fig. 7,
This base station 20 includes:
Determine unit 21, be used for determining random access parameter；Wherein, random access parameter includes: access
The running time-frequency resource of channel and random access guiding, the running time-frequency resource of access channel is used for carrying OBU and is connecing
The random access guiding sent when entering described RSU, random access guiding includes non-competing random access guiding
With competition random access guiding.
Transmitting element 22, sends Stochastic accessing ginseng for all board units OBU in coverage
Number.
Further, transmitting element 22 specifically for:
When OBU is RRC connection mode, send RRC signaling to OBU, wherein, in RRC signaling
Include random access parameter.
Further, transmitting element 22 specifically for:
When OBU is idle pulley, send broadcast to OBU, wherein, broadcast includes
Random access parameter.
The present embodiment is used for realizing above-mentioned each method embodiment, the workflow of unit in the present embodiment
See the description in above-mentioned each method embodiment with operation principle, do not repeat them here.
The embodiment of the present invention also provides for a kind of access system, and as shown in Figure 8, this system includes: Yong Hushe
Standby 10 and base station 20, wherein it is connected by eating dishes without rice or wine between subscriber equipment 10 with base station 20.
It should be noted that the subscriber equipment 10 that includes of above-mentioned access system and base station 20 workflow
See the description in above-mentioned each method embodiment with operation principle, do not repeat them here.
Although the embodiment that disclosed herein is as above, but described content only readily appreciates the present invention
And the embodiment used, it is not limited to the present invention.Technology people in any art of the present invention
Member, on the premise of without departing from the spirit and scope that disclosed herein, can be in the form implemented and thin
Any amendment and change is carried out on joint, but the scope of patent protection of the present invention, still must be with appended right
Claim is defined in the range of standard.
Claims (15)
1. the method for an access network, it is characterised in that including:
Board units OBU receives the random access parameter that roadside unit RSU sends；Wherein, described with
Machine access parameter includes: access the running time-frequency resource of channel and random access guiding, described access channel time
Frequently resource is for carrying the described random access guiding that described OBU sends, institute when accessing described RSU
State random access guiding and include non-competing random access guiding and competition random access guiding；
When described OBU has high-priority service to need to access described RSU, then use described non-competing
The running time-frequency resource of random access guiding and described access channel carries out non-competing Stochastic accessing；Wherein, need
The business accessing described RSU includes: high-priority service and/or general service.
Method the most according to claim 1, it is characterised in that described method also includes:
When described OBU does not has high-priority service to need to access described RSU, then use described competition
The running time-frequency resource of random access guiding and described access channel is at war with Stochastic accessing.
Method the most according to claim 1, it is characterised in that described board units OBU receives
The random access parameter that roadside unit RSU sends includes:
If described OBU is in radio resource control RRC connection mode, described OBU receives described RSU
The RRC signaling sent, includes described random access parameter in described RRC signaling.
Method the most according to claim 1, it is characterised in that described board units OBU receives
The random access parameter that roadside unit RSU sends includes:
If described OBU is in idle pulley, described OBU receives the broadcast that described RSU sends,
Described broadcast includes described random access parameter.
5. the method for an access network, it is characterised in that including:
Roadside unit RSU determines random access parameter；Wherein, described random access parameter includes: access
The running time-frequency resource of channel and random access guiding, the running time-frequency resource of described access channel is used for carrying OBU and exists
The described random access guiding sent when accessing described RSU, described random access guiding include non-competing with
Machine access lead and competition random access guiding；
The roadside unit RSU all board units OBU in coverage send described Stochastic accessing ginseng
Number.
Method the most according to claim 5, it is characterised in that described roadside unit RSU is to covering
All board units OBU in the range of lid send described random access parameter and include:
When OBU is radio resource control RRC connection mode, described RSU sends RRC to described OBU
Signaling, wherein, includes described random access parameter in described RRC signaling.
Method the most according to claim 5, it is characterised in that described roadside unit RSU is to covering
All board units OBU in the range of lid send described random access parameter and include:
When OBU is idle pulley, described RSU sends broadcast to described OBU, wherein, described
Broadcast includes described random access parameter.
8. a subscriber equipment, it is characterised in that including:
Receive unit, for receiving the random access parameter that roadside unit RSU sends；Wherein, described with
Machine access parameter includes: access the running time-frequency resource of channel and random access guiding, described access channel time
Frequently resource is for carrying the described random access guiding that described subscriber equipment sends when accessing described RSU,
Described random access guiding includes non-competing random access guiding and competition random access guiding；
Access unit, is used for when described subscriber equipment has high-priority service to need to access described RSU,
The running time-frequency resource then using described non-competing random access guiding and described access channel carry out non-competing with
Machine accesses；Wherein it is desired to the business accessing described RSU includes: high-priority service and/or general service.
Subscriber equipment the most according to claim 8, it is characterised in that described access unit is additionally operable to:
When described subscriber equipment does not has high-priority service to need to access described RSU, then use described competing
Strive the running time-frequency resource of random access guiding and described access channel to be at war with Stochastic accessing.
Subscriber equipment the most according to claim 8, it is characterised in that described reception unit is concrete
For:
If described subscriber equipment is in radio resource control RRC connection mode, receives described RSU and send
RRC signaling, described RRC signaling includes described random access parameter.
11. subscriber equipmenies according to claim 8, it is characterised in that described reception unit is concrete
For:
If described subscriber equipment is in idle pulley, receive described RSU send broadcast, described extensively
Broadcast and message includes described random access parameter.
12. 1 kinds of base stations, it is characterised in that including:
Determine unit, be used for determining random access parameter；Wherein, described random access parameter includes: connect
Entering running time-frequency resource and the random access guiding of channel, the running time-frequency resource of described access channel is used for carrying OBU
The described random access guiding sent when accessing described RSU, described random access guiding includes non-competing
Random access guiding and competition random access guiding；
Transmitting element, sends described Stochastic accessing ginseng for all board units OBU in coverage
Number.
13. base stations according to claim 12, it is characterised in that described transmitting element specifically for:
When OBU is radio resource control RRC connection mode, send RRC signaling to described OBU,
Wherein, described RRC signaling includes described random access parameter.
14. base stations according to claim 12, it is characterised in that described transmitting element specifically for:
When OBU is idle pulley, send broadcast, wherein, described broadcast to described OBU
In include described random access parameter.
15. 1 kinds of access systems, it is characterised in that include described in claim 8 to 11 any one
Base station described in subscriber equipment and claim 12 to 14 any one.
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| CN201510185794.8A CN106162924B (en) | 2015-04-17 | 2015-04-17 | Method, device and system for accessing network |
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| CN201510185794.8A CN106162924B (en) | 2015-04-17 | 2015-04-17 | Method, device and system for accessing network |
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