WO2017005787A1

WO2017005787A1 - Method and control device for operating a base station

Info

Publication number: WO2017005787A1
Application number: PCT/EP2016/065966
Authority: WO
Inventors: Herbert Meier; Martin GRIESBECK; Martin Böld; Ronald Hain
Original assignee: Continental Automotive Gmbh
Priority date: 2015-07-06
Filing date: 2016-07-06
Publication date: 2017-01-12
Also published as: DE102016212163A1

Abstract

Disclosed is a method for operating a base station (1), according to which the base station (1) is provided with multiple paths (3, 5, 7, 9) which represent each route that can be taken by a vehicle in the area surrounding the base station (1). Vehicle data of at least one vehicle in the surrounding area of the base station (1) is provided. The vehicle data comprises the current position and the current direction of travel of the respective vehicle. A route that is currently being taken by the respective vehicle is calculated in accordance with the vehicle data and is assigned to a current path. A subsequent path that follows the current path is calculated in accordance with the vehicle data, this subsequent path representing a route that the respective vehicle will most probably take after travelling along the current route. The base station (1) provides the respective vehicle with the subsequent path that follows the current path. Also disclosed is a corresponding control device.

Description

description

Method and control device for operating a Basissta ^¬ tion

The invention relates to a method and a corresponding control device for operating a base station.

The basis of many of today's driver assistance systems is the recognition of the immediate surroundings of a vehicle. In order to further improve road safety and energy saving, information about driving distances ^ahead in future vehicle assistance systems will also be recorded and evaluated. To provide driver assistance systems information about the route ahead is available, an electronic Hori ^¬ horizon is determined.

The term electronic horizon here denotes a virtual sensor that provides information about the environment of the vehicle. The electronic horizon is provided übli ^¬ cherweise cyclically. For this purpose, the route ahead is determined on which the vehicle is expected to move. This route is known as the most true ^¬ scheinlichste driving path, in English Most Probable Path (MPP). The calculation of the most likely driving path is currently based on static maps attributes such case ^¬ play a highest road class.

The object on which the invention is based is to provide a method and a control device for operating a base ^¬ station, or which enables a reliable use of driver assistance systems of a vehicle and to an efficient and / or safe and / or comfortab is ^¬ len operation of the vehicle contributes. The problem is solved by the features of the independent Pa ^¬ tentansprüche. Advantageous developments of the invention are characterized in the subclaims. According to a first aspect, the invention is characterized by a method for operating a base station. The base station ^¬ on several paths are provided, which are representative of a vehicle passable by a route in an environment of the base station. Further, vehicle data is wenigs- least a vehicle in the vicinity of the base station bereitge ^¬ represents, comprising a current position and a current direction of travel of the respective vehicle.

Depending on the vehicle data, a route currently being traveled by the respective vehicle is determined. The traveled by the vehicle per ^¬ stays awhile route is associated with a current path.

Depending on the vehicle data subsequent to the current path location is determined which is representative of a Stre ^¬ bridge, which is most likely to navigate to the currently traveled route the respective vehicle. Further, the path following the current path is provided to the respective vehicle by the base station.

Can advantageously take place ex ^¬ tern to the vehicle, a determination of at least one path. Providing the following to current path path allows a particularly ^¬ reliable operation of the vehicle. The path following the current path can in particular overlap with the current path. Advantageously, such a contribution will rut ^¬ tet that the vehicle always find the newest information on the traffic through the vehicle route available. Ins ^¬ particular can thus delays by a data transmission path between the at least one of the respective base station and the respective vehicle be anticipated. The at least one path may also referred to as an electronic horizon ^¬ to. At the base station is in particular a Mo ^¬ bilfunksendeanlage, such as an LTE (Long Term Evolution) mobile network. In particular, the mobile radio network is a cellular mobile radio network with a multiplicity of mobile radio transmitters along a road network, so that a locally relevant path along the road network can be provided to the vehicle. In particular, Kings ^¬ NEN several vehicles with the base station communicate, so that a plurality of vehicles of a path can be provided at least ^¬.

The base station is assigned, for example, a predetermined transmitting / Emp ^¬ fangs range. The transmission / reception range can also be referred to as the cell diameter of the base station. For example, the transmission / reception range is between 10 km and 30 km.

The at least one path is, for example, an electronic horizon. In particular, the Wenig ^¬ least one path comprises a most likely driving path referred to in English Most Probable Path (MPP). Alternatively or additionally, the at least one path further driving paths may include at ^¬ play, all possible traveling paths in the vicinity of the base station ^¬. The respective routes are in particular limited to a predetermined length. For example, the length of each ^¬ weiligen distance of between 2 km and 10 km. The routes han ^¬ punched it in particular roads. The at least one path is provided in particular by the Basissta ^¬ tion. For example, a mobile radio receiver associated with the vehicle in this connection which allows a ^¬ tenaustausch As with the base station.

In an advantageous embodiment according to the first aspect, each path is assigned an address. Providing the following to the current path comprises a path READY ^¬ len of the respective address.

Advantageously, this allows a particularly simple provision of the respective path. The address may be, for example, a parent address. In a further advantageous embodiment according to the first aspect, a data transmission of the path following the current path between the base station and the at least one vehicle is designed as a multipoint connection. This advantageously allows a flexible distribution of information. In particular, such a high bandwidth of data transmission can be achieved.

In a further advantageous embodiment of the first aspect, the data transmission includes a multicast data stream Nachrich ^¬.

In a further advantageous embodiment according to the first aspect, the base station provides map data, which are assigned to the respective path following the current path, to the at least one vehicle via a multicast message stream. This allows a particularly simp ^¬ che and efficient data transfer of the map data. ^{By way of} example, the at least one path in this case comprises the map data. For example, the map data may be transmitted through the Vehicle include drivable routes and / or a particular class of the route such as highway, highway or city. The routes are in particular roads. Can be, static card data tendaten The Kar ^¬ in particular. In particular, the ulticast message stream can be done zyk ^¬ cally.

In a further advantageous embodiment according to the first aspect, dynamic data are provided to the vehicle via a point-to-point connection between the base station and the at least one vehicle. This has the advantage that short messages easy and quick to ^¬ we nigstens a vehicle can be provided. The dynamic data may be, for example, a traffic message, such as a traffic jam message, which relates to a respective path or the route traveled by the respective vehicle. In particular, the dynamic data comprises a traffic message or is a traffic message. Insbeson ^¬ particular do not include the dynamic data map data. In particular, the dynamic data may be at least one path attribute of the respective path. For example, the dynamic data can be provided event-based ^¬ each vehicle, that is provided other than a cyclic providing only in the case of an event such as a jam. By way of example, the dynamic data for this purpose are determined and provided on a vehicle-specific basis.

According to a second aspect, the invention relates to a control ^¬ device for operating a base station, which is adapted to carry out the method according to the first aspect. In the control device can be, for example, a ^so-¬ called "Mobile Edge Computing" (MEC) act unit. Insbeson ^¬ particular can be arranged, the control device in the Base Station and adapted to perform the method according to the first as- pect to carry out by means of that base station , Embodiments are explained in more detail below with reference to the schematic drawings. Show it:

FIG. 1 shows a schematic diagram of a road network in ^plan view and a base station;

Figure 2 is a flowchart for operating the base station, and

Figure 3 is a flowchart for operating a vehicle.

Elements of the same design or function are provided on ^¬ cross with the same reference numerals.

Figure 1 shows a schematically illustrated base station 1 in plan view and a road network 2, wherein the base station 1, for example, as a mobile phone mast of a LTE network with a control device 13 (see Figure 2) is formed.

Figure 1 also shows three paths 3, 5, 7, each repre ^¬ tively for a drivable by a vehicle distance of the road network 2. In case the at least one path 3, 5, 7 are, for example, be a so-called electronic Ho- rizont , The electronic horizon represents vehicle functions

Data from a static map or dynamic events over a corridor of approx. 2 - 10 kilometers are available to improve or even enable functions in the areas of energy efficiency, safety and comfort, such as partially or highly automated driving. The requirements for actua ^¬ lity, accuracy and thus also data volumes increase with the increasingly complex functions. The corridor for which the data are calculated, for example, in real time ^¬ pending on a position and a direction of travel from the topography The card is determined as the most probable path (so-called "Most Probable Path", MPP).

Especially for the safety and comfort func- tions larger amounts of data from static and dynami shear ^¬ card is required.

At a data transmission between central backend and vehicle called "tile" and "layer" based is often an attempt to transfer the update data and so from centra ^¬ len backend along with components in the vehicle, example ^¬ example depending on which card data are required, a compromise between Mobile data traffic (so-called "Over The Air", OTA traffic) and timeliness of the data to find.

With the ability to hold an electrical horizon in a Ser ^¬ ver in the base station 1 tailored Since ^¬ th for the vehicles that are located in the area of LTE base station 1 with high bandwidth via multicast mechanisms more cost-effectively be distributed.

For example, in this context, the base station 1 is assigned a control device 13 (see FIG. 2), which is embodied, for example, as a so-called "Mobile Edge Computing" (MEC) unit The base station 1 is capable of electronic horizons for the vehicles in the MEC in the MEC to provide sen ^¬ de / reception range of the base station 1 is available. the made available electronic horizons are especially not calculated vehicle individually but ^¬ the vehicles thereon per leg for all be ^¬ riding provided. that is, the calculation of the electronic Ho ^¬ rizonte takes place optimally in the MEC unit instead of individually is so that helped in many vehicles to simplify the driving ^¬ compelling hardware.

With respect to the electronic horizon, the base station 1 is now the storage location for the electronic horizon and all information included therein. The base station 1 thus functions as a "mega-vehicle" from the viewpoint of the backend. The driving ^¬ convincing is supplied with the current electronic horizon data from the base station 1 and itself needs no card more parts locally in the vehicle.

In the MEC unit is a number of electronic Hori ^¬ zonten available that can be associated with those of the position and motion vector of the vehicles.

Short messages can be addressed to these vehicles directly from the MEC unit through point-to-point connections. For larger amounts of data, such as the highly accurate map detail for the area of the electronic horizon it makes sense to make the vehicles a multicast address per the MEC unit held ^¬ requested electronic horizon available to distribute the data of an electronic horizon multicast. This makes it possible to distribute current required map data or other, extensive data volumes with high bandwidth to the vehicles with little effort.

The decentralized and flexible distribution of informa- tion, the electronic horizon system can be shown effective and ef ^¬ fektiver. In the vehicle less compo ^¬ nents and storage space are required, which saves time and costs. Optimally, no store cards or cards in the vehicle parts is no longer necessary because the secure perma ^¬ nent supply of the vehicle with the necessary Informatio ^¬ nen by the electronic horizon in the EC unit is ensured.

FIG. 1 shows the necessary overlap of the electronic horizon cones. For example, the furthest ^forecasts required are two kilometers. In order to ensure this foresight, paths 3, 5, 7 of three kilometers are made available to the vehicle (represented by length 11 in FIG. 1). So you have the time that the vehicle needs for the difference 9 of one kilometer to provide the next forecast. The transfer size for highly accurate map data is compressed for an electronic horizon approx. 200 kByte.

At 200 km / h, the travel time for a kilometer is about 18 seconds. 5 seconds are reserved for reprocessing in the vehicle. In other words, in order to be able to transmit an electronic horizon, a bandwidth of approximately 15 kbytes / s or 124 kbit / s is required.

Assuming for the base station 1 with a coverage or a transmission / reception range of 15 km diameter a highway distance of 30 km, so multicasts for 30 electronic horizon cones are needed. All cone must be transmitted within the 13 Se ^¬ customer, that is, constantly required bandwidth in the base station 1 is about 460 kbytes / s or

3.7 Mbps.

The control device 13 is in this connection example ^¬ as assigned in which a program is stored, which will be explained in more detail below with reference to the drain diagram of Figure 2, a data and program memory. The program is started in a step S, are initialized in the game, in ^¬ variables. In particular, the base station 1 is provided with the paths 3, 5, 7 in the step S1, which are representative of one by one

Vehicle passable route in the vicinity of the base station 1. Further, the base station 1 vehicle data of at least one vehicle in the vicinity of the base station 1 are provided, which include a current position and a current direction of travel of the respective vehicle. Furthermore, cyclic ulticasts are also started for all paths 3, 5, 7, ie the paths 3, 5, 7 are provided by the base station 1.

In a step S3, depending on the vehicle data, a currently traveled by the respective vehicle route ermit ^¬ telt which is associated with a current path. 3 The Pro ^¬ program then continues in a step S5.

In step S5, a path 5 following the current path 3 is ascertained, which is representative of a route which the respective vehicle is most likely to drive on according to the route currently being traveled. The program is subsequently resumed ^¬ ßend in a step S7. In step S7, the path 5 following the current path 3 is assigned a multicast address. Subsequently, the multicast address is provided to the respective vehicle. The program is finally continued in a step S3. It can further be associated with a control unit of a vehicle, a data and program memory, in which a program is vomit ^¬ chert, the Fi gur ^¬ 3 is explained in detail below with reference to the flowchart of. The program in the vehicle is started, for example, following the durchgeführ ^¬ th through control apparatus 13 of base station 1 in step S7, step S41, to be initialized in the game, in ^¬ variables. In particular, the current multicast address is ge ^¬ sets to an invalid value. The program is continued in a step S43.

In step S43, the position and the direction of travel of the vehicle is determined and transmitted to the base station 1. The program is continued in a step S45.

In step S45, the program receives a multicast address from the base station 1. If the received multicast address is different from the current multicast address, the current multicast address is overwritten with the received multicast address and the program continues in a step S47. Otherwise, the program will be continued ^¬ sets after a waiting period in the step S43. In the step S47, the vehicle logs on to the current multicast address and receives the data for the associated one of the multi-cast address ^¬ path until they are complete. The program is continued in step S43.

Claims

claims

Method for operating a base station (1), in which

- the base station (1) are provided ^¬ several paths (3, 5, 7) are representative, which are representative of a vehicle passable by a distance in an environment of the base station (1),

Vehicle data of at least one vehicle in the vicinity of the base station (1) are provided, comprising a current position and a current travel direction of the respective vehicle,

depending on the vehicle data, a route currently being traveled by the respective vehicle is determined, which is assigned to a current path,

- depending on the vehicle data on the current

Path is the following path is determined, which is representative of a route that is most likely to drive the respective vehicle according to the currently traveled route, and

- the path following the current path is provided to the respective vehicle by the base station (1).

The method of claim 1, wherein

- each path (3, 5, 7) is assigned an address, and

providing the path following the current path comprises providing the respective address.

Method according to one of the preceding claims, in which

- in which is a data transmission of the current path following the path between the base station and the forms we ^¬ nigstens a vehicle out as a multi-point connection ^¬.

The method of claim 3, wherein the data transmission comprises an ulticast message stream.

5. The method according to any one of the preceding claims, wherein by the base station (1) map data, which are assigned to the respective path following the current path, are provided to the at least one vehicle via a multicast message stream.

6. The method according to any preceding claim, wherein the dynamic data in each case via a point-to-point Verbin ^¬ connection between the base station and the at least one vehicle is provided to the vehicle.

7. Control device (13) for operating a base station (1) which is formed to a method according to one of perform An ^¬ claims 1 to 6.