• 专利附录
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    • 专利摘要:
    Methods (400, 600) and communicators (210, 220) in a first vehicle (110-1) and a second vehicle (110-2) respectively, in a platoon (100), for transferring a soft identity reference, associated with the first vehicle (110-1) when acting as a gateway in the platoon (100), to the second vehicle (110-2), enabling the second vehicle (110-2) to start acting as gateway in the platoon (100). The method (400) comprises: determining (402) to transfer the soft identity reference to the second vehicle (110-2); transmitting (403) a message to a communication network node (130) that the first vehicle (110-1) is going to discontinue acting as gateway; transmitting (404) a message to a connectivity node (120) for inactivating the soft identity reference associated with the first vehicle (110-1); and transferring (405) the soft identity reference to the determined (402) second vehicle (110-2).(Publ. Fig. 1B)
    公开号:SE1650698A1
    申请号:SE1650698
    申请日:2016-05-23
    公开日:2017-11-24
    发明作者:JEDDI TEHRANI Maisam；Alam Assad；YOUSSEF Maikel
    申请人:Scania Cv Ab；
    IPC主号:
    专利说明:

    570-15 2016-05-19 Description for filing METHOD AND COMMUNICATOR IN A VEHICLE TECHNICAL FIELD This document discloses methods and communicators. More particularly, methods andcommunicators are disclosed, for transferring a soft identity reference from a first vehicle toa second vehicle in a platoon.
    BACKGROUND Grouping vehicles into platoons is an emerging technology, leading to reduced fuel con-sumption and increased capacity of the roads. A number of vehicles, e.g. 2-25 or more,may be organised in a platoon or vehicle convoy, wherein the vehicles are driving in coor-dination after each other with only a small distance between the vehicles, such as somedecimetres or some meters, e.g. up to about 20 meters (the inter-vehicular distance maybe dependent e.g. on vehicle velocity, vehicle weight, road topography, road condition,etc.). Thereby air resistance is reduced, which is important for reducing energy consump-tion, in particular for heavy duty vehicles such as trucks, busses and goods vehicles orother vehicles having a large frontal area. Such platoons may be organised and plannedalready long before the involved vehicles start driving. However, platoons may also beformed ad-hoc, when an appropriate in-front vehicle is spotted.
    Further, vehicles, whether driving in platoon or not, are sometimes connected via a wire-less connection to a network service such as e.g. a back-end office which may keep trackof current geographical position of the vehicle, fuel consumption of the vehicle etc. Thiscommunication may be made via a communicator, which may have a physical sim card ora soft sim card, which sometimes may be referred to as a Machine to machine Communi-cation Identity Module (MCIM).
    Thus the communicator in a vehicle, or any other Machine to Machine (M2M) device, caninitially attach to the communication network based on wireless communication, such ase.g. 3rd Generation Partnership Project (3GPP) technologies as the one described in3GPP TR 33.812. The communicator may download a MClM in order to use a limited set ofoperations, such as reporting different measured data to the network and to end users aswell as receiving instructions from the network, e.g. a back-end office. lt is also known that a M2M device located in a personal network may act as a gateway forother users in the personal network. ln such scenario, only the M2M device acting as agateway needs an MClM in order to communicate with the communication network. The 570-15 2016-05-19 Description for filing M2M device acting as a gateway can then communicate with the network to send reportsfor the whole group as well as receiving instructions intended for the whole group. Theother M2M devices/ communicators in the group only need to report their measurements tothe gateway over another wireless network based on e.g. WiFi, Bluetooth or similar. Withthis type of setup, the load towards the network is reduced since there is no need todownload a MCIM for every M2M device in a personal network. Also all reports and instruc-tions goes through one node in the personal network, i.e. the gateway.
    The scenario described above is applicable to vehicle platooning where the platoon canform a personal network and one of the vehicles in the platoon is responsible for reportingto the communication network as well as reporting to the other vehicles in the platoon. Thismeans that it is possible for the vehicles in the platoon (in addition to the one vehicle actingas gateway) to communicate with the global communication network without having anyactive subscriptions since only local communication means are needed such as Wi-Fi, Bluetooth or any other near field communication means.
    The problem with the above mentioned setup is that the vehicle acting as a gateway mightwant to leave the platoon for several reasons. ln such case the only way to report to thenetwork and to receive data from the network is by letting a new vehicle within the platoongroup to assume the role of gateway. This means that the newly chosen gateway/ vehiclemust connect to the communication network in order to download a new MCIM. The draw-back/ problem being that a new subscription is activated every time a vehicle leaves theplatoon. This creates an added cost, since a fleet that operates in a platoon will have tohave several (costly) subscriptions for this to work. ln particular, in an ad-hoc created pla-toon, it may be expected that vehicles rather frequently leave its platoon and join or formsanother platoon, as the vehicles may not be coordinated in terms of destination, fuel fill-ings, compulsory stops due to legal driving time regulations for professional drivers, etc.
    Document US 20070115868 illustrates an ad-hoc network created for communication be-tween vehicles in a group of vehicles. A group header node is selected among the involvedvehicles to lead the group and function as a gateway for communication between any vehi-cle in the group and the network. When the group header node leaves the group, a newgroup header node is selected. However, this vehicle has to download a new l/ICIM in or-der to communicate with the network.
    Document US 20110013510 describes a plurality of vehicles communicating over a com-mon local network. One or several communication nodes are described as gateways and are able to communicate with a network. By assigning several gateways in the group, one 570-15 2016~05~19 Description for filing vehicle acting as a gateway may leave the group without interruption in the network com-munication, as the other gateway/s may continue the communication. This is a robust solu-tion, however, several subscriptions are required. Also, several subscriptions running inparallel means more network traffic, putting increasing demands on the network infrastruc-ture.
    Document EP 1065128 concerns a train set having a plurality of wagons where the wagonsmay inter-communicate via a local network. Each wagon has its own gateway, meaningthat a separate MCIM and subscription is required for each wagon in the train set, bringingthe above mentioned disadvantages. lt appears that further development is required for enabling and facilitating network com- munication for vehicles driving in a platoon.
    SUMMARY lt is therefore an object of this invention to solve at least some of the above problems and provide improved network communication in a vehicle platoon formation.
    According to a first aspect of the invention, this objective is achieved by a method in a firstvehicle associated with a soft identity reference. The first vehicle is acting as a gateway ina platoon, comprising a plurality of vehicles, for transferring the soft identity reference to asecond vehicle in the platoon. The method comprises determining to transfer the soft iden-tity reference to the second vehicle. Further, the method also comprises transmitting amessage to a communication network node that the first vehicle is going to discontinueacting as gateway. ln addition, the method comprises transmitting a message to a connec-tivity node for inactivating the soft identity reference associated with the first vehicle. Themethod also comprises transferring the soft identity reference to the determined secondvehicle.
    According to a second aspect of the invention, this objective is achieved by a first commu-nicator in a first vehicle, associated with a soft identity reference. The first vehicle is actingas a gateway in a platoon, comprising a plurality of vehicles, for transferring the soft identityreference to a second vehicle in the platoon. The communicator is configured to determineto transfer the soft identity reference to the second vehicle. Further, the communicator isconfigured to transmit a message to a communication network node that the first vehicle isgoing to discontinue acting as gateway. ln addition, the communicator is further configuredto transmit a message to a connectivity node for inactivating the soft identity reference as- 570-15 2016~05~19 Description for filing sociated with the first vehicle. Also, the Communicator is configured to transfer the softidentity reference to the determined second vehicle.
    According to a third aspect of the invention, this objective is achieved by a method in asecond vehicle in a platoon comprising a plurality of vehicles, for starting to act as gatewayin the platoon. The method comprises receiving a soft identity reference from the first vehi-cle. Further the method also comprises transmitting a message to a connectivity node forassociating the soft identity reference with the second vehicle. The method in additioncomprises communicating messages related to vehicles in the platoon with a network nodeover a first wireless communication interface. Also, the method furthermore comprisescommunicating information related to vehicles in the platoon, with the respective vehicles over a second wireless communication interface.
    According to a fourth aspect of the invention, this objective is achieved by a second com-municator in a second vehicle in a platoon comprising a plurality of vehicles, for starting toact as gateway in the platoon. The communicator is configured to receive a soft identityreference from the first vehicle. Further, the communicator is also configured to transmit amessage to a connectivity node for associating the soft identity reference with the secondvehicle. ln addition, the communicator is configured to communicate messages related tovehicles in the platoon with a network node over a first wireless communication interface.
    By transferring the soft identity reference from the first vehicle to the second vehicle, andthereby enabling the second vehicle to continue to act as gateway for the platoon, it is notrequired for each vehicle in the platoon to download its own unique soft identity referenceand start its own network service subscription. Thanks to the disclosed methods, it is evenpossible to reuse the soft identity reference of a gateway vehicle in a first platoon, whenforming a second platoon, after the first platoon is dissolved. Thereby, less load is put onthe wireless network. Also, the total subscription costs for the vehicles in the platoon isreduced by the provided methods.
    Other advantages and additional novel features will become apparent from the subsequentdetailed description.
    FIGURES Embodiments of the invention will now be described in further detail with reference to theaccompanying figures, in which: Figure 1A illustrates a side view of vehicles driving in a platoon according to an em- 570-15 2016-05-19 Description for filing 5 bodiment;Figure 1B illustrates a platoon according to an embodiment, as seen from above;Figure 2A schematically illustrates a vehicle interior of a vehicle, according to an em- bodiment;Figure 2B schematically illustrates a vehicle interior of a vehicle driving behind another vehicle, according to an embodiment;Figure 3 schematically illustrates a combined flow chart and signalling scheme;Figure 4 is a flow chart illustrating an embodiment of a method in a first vehicle;Figure 5 is an illustration depicting a system according to an embodiment;Figure 6 is a flow chart illustrating an embodiment oi a method in a second vehicle;Figure 7 is an illustration depicting a system according to an embodiment.
    DETAILED DESCRIPTION Embodiments of the invention described herein are defined as communicators and meth-ods, which may be put into practice in the embodiments described below. These embodi-ments may, however, be exemplified and realised in many different forms and are not to belimited to the examples set forth herein; rather, these illustrative examples oi embodimentsare provided so that this disclosure will be thorough and complete.
    Still other objects and features may become apparent from the following detailed descrip-tion, considered in conjunction with the accompanying drawings. lt is to be understood,however, that the drawings are designed solely for purposes of illustration and not as adefinition of the limits of the herein disclosed embodiments, for which reference is to bemade to the appended claims. Further, the drawings are not necessarily drawn to scaleand, unless otherwise indicated, they are merely intended to conceptually illustrate thestructures and procedures described herein.
    Figure 1A illustrates a platoon 100, comprising a first vehicle 110-1, a second vehicle 110-2 and a third vehicle 110-3, driving in a driving direction 105 on a road.
    The vehicles 110-1, 110-2, 110-3 in the platoon 100 are coordinated via an inter- communication travelling at given inter-vehicular distances t1, tg and velocity.
    The inter-vehicular distances t,, tg may be fixed or variable in different embodiments. Thusthe distances t,, t2 may be e.g. some centimetres, some decimetres, some meters or some 570-15 2016~05~19 Description for filing tenths of meters in different embodiments. Alternatively, each vehicle 110-1, 110-2, 110-3in the platoon 100 may have different distances t,, t2 to the vehicle following, or leading,vehicle 110-1, 110-2, 110-3, than to other vehicles 110-1, 110-2, 110-3 in the coordinatedgroup 100.
    The vehicles 110-1, 110-2, 110-3 may comprise e.g. a truck, a car, a multi-passenger vehi-cle such as a bus, a coach or any similar vehicle or other means of conveyance. The vehi-cles 110-1, 110-2, 110-3 in the platoon 100 may comprise vehicles of the same, or differenttypes in different embodiments.
    The vehicles 110-1, 110-2, 110-3 may be driver controlled or driverless autonomously con-trolled vehicles in different embodiments. However, for enhanced clarity, the vehicles 110-1, 110-2, 110-3 are subsequently described as having a driver.
    One of the vehicles 110-1, 110-2, 110-3 in the platoon 100, such as e.g. the first vehicle110-1, comprises a communicator and may function as a gateway between the vehicles110-1, 110-2, 110-3 in the platoon 100 and an exterior wireless communication network.The communication between the first vehicle 110-1/ gateway and the network may bemade over a first communication interface such as e.g. 3rd Generation Partnership Project(3GPP) technologies as the one described in 3GPP TR 33.812.
    The vehicles 110-1, 110-2, 110-3 in the platoon 100 may be coordinated via a wirelesssignal over an inter-vehicular communication interface. Such second wireless communica-tion interface may comprise, or at least be inspired by wireless communication technologysuch as Wi-Fi, Wireless Local Area Network (WLAN), Ultra Mobile Broadband (UMB),Bluetooth (BT), Near Field Communication (NFC), Radio-Frequency Identification (RFID),Z-wave, ZigBee, lPv6 over Low power Wireless Personal Area Networks (6LoWPAN),Wireless Highway Addressable Remote Transducer (HART) Protocol, Wireless UniversalSerial Bus (USB), optical communication such as Infrared Data Association (lrDA) or infra-red transmission to name but a few possible examples of wireless communications in someembodiments. ln some embodiments, the involved vehicles 110-1, 110-2, 110-3 in the platoon 100 maybe configured for wireless inter-communication between each other, e.g. via Vehicle-to-Vehicle (V2V) communication, e.g. based on Dedicated Short-Range Communications(DSRC) devices. DSRC works in 5.9 GHz band with bandwidth of 75 MHz and approxi-mate range of 1000 m in some embodiments. By such wireless communication, the vehi-cles 110-1, 110-2, 110-3 may coordinate their movements, which will enable a more in- 570-15 2016~05~19 Description for filing formed and advanced control that in turn will facilitate a smaller inter-vehicle spacing t1, tgwith maintained safety. Thereby the fuel gain will be increased as the air resistance will befurther reduced.
    All communication to/ from the 110-1, 110-2, 110-3 in the platoon 100 and the externalnetwork passes the gateway/ the first vehicle 110-1, using the downloaded soft identitysuch as MCIM. However, the vehicle 110-1 acting as a gateway may have to leave theplatoon 100 for various reasons, either planned (arriving at its destination, has to take abreak according to tachograph data, etc.) or unplanned (flat tyre, the driver having suddennausea, the cargo is moving, etc.).
    Prior to leaving the platoon 100, the first vehicle 110-1 acting as a gateway transfers thesoft identity reference to another vehicle 110-2, 110-3 within the platoon 100, such as e.g.a second vehicle 110-2. Thus, the second vehicle 110-2, acting as the new gateway doesnot have to download a new soft identity reference from the network, but can use the trans-ferred soft identity reference to authenticate itself and to announce its self as active, bothfor the communication network and for the other vehicles 110-1, 110-2, 110-3 in the pla-toon 100. The same procedure may be repeated whenever a current vehicle 110-1, 110-2,110-3 acting as gateway decides to leave the platoon 100.
    The first vehicle 110-1 may in some embodiments transfer the soft identity reference toanother vehicle 110-2, 110-3 within the platoon 100 for other reasons than leaving, such ase.g. low capacity of the first vehicle communicator, distribution of work load among the ve-hicle communicators of vehicles 110-1, 110-2, 110-3 in the platoon 100, dysfunctionalcommunicator, etc. ln order to secure the soft identity reference transfer operation, the first vehicle 110-1 act-ing as the gateway holding the soft identity reference may firstly announce to the networkthat it intends to transfer its soft identity reference to another vehicle 110-2, 110-3 in theplatoon 100. The network then inactivates any active session for the first vehicle 110-1acting as a gateway and buffers all data until the second vehicle 110-2 is designated in asuitable manner (or wants) to act as a gateway attaches and authenticates itself. When thesoft identity reference transfer between the first vehicle 110-1 and the second vehicle 110-2 is completed, all buffered data may be sent to the second vehicle 110-2 that will act asthe new gateway.
    Once the first vehicle 110-1 acting as a gateway decides to do a transfer of the soft identityreference, it will check within the platoon 100 for available vehicles 110-1, 110-2, 110-3 570-15 2016-05-19 Description for filing that can act as a gateway, e.g. via a broadcast. ln case e.g. the second vehicle 110-2 isable to act as new gateway, a response is sent in return to the first vehicle 110-1, possiblytogether with a device Identity (ID) of the communicator of the second vehicle 110-2.
    The first vehicle 110-1 will then send the device Identity (ID) of the communicator of thesecond vehicle 110-2 that will act as a gateway to the network together with a transfer re-quest. When the network receives the transfer request from the first vehicle 110-1, cur-rently acting as a gateway it will inactivate the soft identity reference. The second vehicle110-2 that wants to act as a gateway needs to activate the soft identity reference by attach-ing to the network and by sending the same device ID to the network sent earlier, in someembodiments.
    When a vehicle 110-1, 110-2, 110-3 is acting as a gateway, a special symbol may be dis-played in the instrument cluster to show that it is the gateway in some embodiments. lf thegateway vehicle 110-1 is planning to leave the platoon 100, the driver can manually inputthat it wants to leave the platoon 100 in advance or it may be automatically detected sincethe route put in the navigation system deviates from the route of the platoon 100. Thereby,the symbol in the instrument cluster may start to blink in the host vehicle 110-1 and possi-bly in the other vehicles 110-2, 110-3 in the platoon 100 in some embodiments. The othervehicles 110-2, 110-3 in the platoon 100 will then know that the vehicle 110-1 acting as agateway is leaving the platoon 100 and, similarly as before, the driver can select manuallyto act as the new gateway or it can be done automatically based on suitable criteria in dif-ferent embodiments. After the new gateway vehicle 110-2 has been established, the gate-way symbol may be shown constantly in that vehicle 110-2, in some embodiments. Othersimilar or corresponding means of indication may alternatively be provided, such as indica-tion by diodes in different colours, audio signals, tactile signals etc.
    Alternatively, the string of platooning vehicles 110-1, 110-2, 110-3 can be shown in someembodiments, in the instrument cluster for all vehicles 110-1, 110-2, 110-3 in the platoon100. The gateway vehicle 110-1 can then be denoted by a special symbol or colour at itsposition in the string of vehicles 110-1, 110-2, 110-3 in the platoon 100.
    Note that a blinking symbol or a suitable colour can also be shown for the current and newgateway vehicles 110-1, 110-2, when data is being buffered and the transfer of gatewayvehicles 110-1, 110-2 is being done in some embodiments. 570-15 2016-05-19 Description for filing Hence, in a platoon 100 of plural vehicles 110-1, 110-2, 110-3 only one mobile subscriptionassociated with one soft identity reference/ MCIM needs to be active which reduces sub-scription costs and also reduces load against the communication network. ln some embodiments, temporary platoons 100 may be created, e.g. when a first platoonstops due to traffic jam, and another platoon catches up with the first platoon. Each platoonmay then have their own gateway, i.e. one vehicle of each platoon is acting as gateway forthe vehicles in the respective platoon. A temporary platoon may then be created by merg-ing the two platoons and disabling one of the gateways, establishing one of the gatewaysas gateway for all vehicles of the temporary platoon. Thereby network traffic costs andnetwork load are further reduced in some embodiments.
    At a later moment, when the traffic starts rolling and the platoon is separated into the twooriginal platoons, the above merging process may be reversed.
    Figure 1B also illustrates a platoon 100, such as e.g., the platoon 100 in Figure 1A, asseen from above. The vehicles 110-1, 110-2, 110-3 in the platoon 100 are enabled tocommunicate wirelessly over the inter-vehicular communication interface, exemplified above.
    As previously stated, one of the vehicles 110-1, 110-2, 110-3 in the platoon 100, such ase.g. the first vehicle 110-1, acts as a gateway for all vehicles 110-1, 110-2, 110-3 in theplatoon 100. Thus the first vehicle 110-1 communicates over a first communication inter-face with a connectivity node 120 and a communication network node 130.
    The first communication interface may comprise, or at least be ínspired by e.g., 3rd Gener-ation Partnership Project (3GPP) Long Term Evolution (LTE), LTE-Advanced, 3GPP TR33.812, Evolved Universal Terrestrial Radio Access Network (E-UTRAN), Universal MobileTelecommunications System (UMTS), Global System for Mobile Communications (original-ly: Groupe Spécial Mobile) (GSM)/ Enhanced Data rate for GSM Evolution (GSM/EDGE),Wideband Code Division Multiple Access (WCDMA), Time Division Multiple Access(TDMA) networks, Frequency Division Multiple Access (FDMA) networks, OrthogonalFDMA (OFDMA) networks, Single-Carrier FDMA (SC-FDMA) networks, Worldwide Inter-operability for Microwave Access (WiMax), or Ultra Mobile Broadband (UMB), High SpeedPacket Access (HSPA) Evolved Universal Terrestrial Radio Access (E-UTRA), High-SpeedUplink Packet Access (HSUPA), High Speed Downlink Packet Access (HSDPA), UniversalTerrestrial Radio Access (UTRA), GSM EDGE Radio Access Network (GERAN), 3GPP2CDMA technologies, e.g., CDMA2000 1x RTT and High Rate Packet Data (HRPD), or simi- 570-15 2016~05~19 Description for filing1 0 lar, just to mention some few options.
    Figure 2A illustrates the scenario in Figure 1A and/ or Figure 1B, as it may be perceivedfrom the driver of the first vehicle 110-1 (if any), driving first in the platoon 100 while drivingin the driving direction 105.
    The vehicle 110-1 comprises a communicator 210. The communicator 210 is associatedwith a soft identity reference, such as e.g. a MCIM. The first vehicle 110-1 acts as a gate-way for the platoon 100, via the communicator 210.
    Figure 2B illustrates the scenario in Figure 1A, Figure 1B and/ or Figure 2A, as it may beperceived from the driver of the second vehicle 110-2 (if there is any driver present), drivingbehind the first vehicle 110-1 in the platoon 100 while driving in the driving direction 105.
    The first vehicle 110-1 has communicated that it will leave the platoon 100 and has trans-mitted the soft identity reference to the second vehicle 110-2. The second vehicle 110-2from this moment in time starts functioning as gateway for the platoon 100, and the firstvehicle 110-1 may leave the platoon 100.
    Figure 3 schematically illustrates how a soft identity reference may be downloaded to afirst vehicle 110-1, which then starts operating as a gateway for the platoon 100, and thentransferred to a second vehicle 110-2 in the platoon 100.
    Firstly, it is determined that the first vehicle 110-1 in the platoon 100 is going to act asgateway and download a soft identity reference to the communicator of the first vehicle110-1. This may be determined according to an algorithm, like “select the vehicle 110-1,110-2, 110-3 in the platoon 100 having the highest computing capacity”, “always select thefirst vehicle 110-1 in the platoon 100”, “select the vehicle 110-1, 110-2, 110-3 in the platoon100 already having downloaded soft identity reference which may be reused for the newlyformed platoon 100”, “select the vehicle 110-1 that will be the last one to leave the platoon100”, etc. ln step S1, the selected first vehicle 110-1 downloads a soft identity reference from thenetwork, i.e. from the connectivity node 120. An attached request is also sent to the con-nectivity node 120 in a subsequent step S2. The connectivity node 120 then register, instep S3, the Internet Protocol (IP) address and a Mobile Station International SubscriberDirectory Number (MSISDN) at the communication network node 130. The MSISDN is anumber uniquely identifylng a subscription in the wireless network. The MSISDN is the 570-15 2016~05~19 Description for filing1 1 telephone number associated with the soft identity reference, e.g. the MCIM of the com-municator 210 in the first vehicle 110-1.
    When the registration is ready, the first vehicle 110-1 may send a broadcast over the sec-ond wireless communication interface to vehicles 110-1, 110-2, 110-3 of the platoon 100that the first vehicle 110-1 from now in is the gateway of the platoon 100, in step S4.
    The vehicles 110-1, 110-2, 110-3 in the platoon 100 may then start to send measured datain step S5 to the first vehicle 110-1/ gateway, over the second wireless communicationgateway. The first vehicle 110-1/ gateway, upon receiving the measured data from theother vehicles 110-2, 110-3 starts to send the measured data to the communication net-work node 130 in step S6. The measured data may be sent to a fleet management portalor a database, where various measured parameters such as fuel consumption, vehicle,position, etc., may be continuously stored.
    The fleet management portal, or an owner of the respective vehicle 110-1, 110-2, 110-3may send instructions to the vehicle 110-1, 110-2, 110-3, such as e.g. changed drivingorders etc., in step S7.
    The first vehicle 110-1 in this example then determines to leave the platoon 100. The firstvehicle 110-1 may then in step S8, send a broadcast to vehicles 110-1, 110-2, 110-3 in theplatoon 100, informing that the first vehicle 110-1 will leave the platoon 100, or alternativelystop acting as gateway. The broadcast may comprise a request to transfer the soft identityreference from the first vehicle 100-1 to another vehicle 110-2, 100-3 in the platoon 100.
    The reason may not necessarily be that the first vehicle 100-1 is to leave the platoon 100,the shift of gateway may be made in order to distribute the calculation efforts equallyamong the vehicles 110-1, 110-2, 110-3 in the platoon 100. ln step S9, the first vehicle 100-1 send a message to the communication network node 130to leave the platoon 100, or at least stop acting as gateway. The communication networknode 130 then inactivate any ongoing session and starts buffer data in step S10.
    The first vehicle 100-1 then sends a message to the second vehicle 110-2, selected to startacting as gateway of the platoon 100 in step S11.
    The second vehicle 110-2 may be selected to become the new gateway based on e.g.computing capacity of the communicator 220 of the second vehicle 110-2, or any other 570-15 2016~05~19 Description for filing1 2 algorithm. ln step S12, the second vehicle 110-2 provides a response comprising a unique identifica-tion of the Communicator 220 of the second vehicle 110-2, such as e.g. the MSISDN and/or the International Mobile Subscriber Identity (IMSI) or other similar unique ID.
    Having thereby confirmed that the second vehicle 110-2 is prepared to become the newgateway and to inherit the soft identity reference of the first vehicle 100-1, the first vehicle100-1 then may send a request to inactivate the soft identity reference of the first vehicle100-1 to the connectivity node 120 in step S13.
    Thereafter, the first vehicle 100-1 may send the soft identity reference of the first vehicle100-1, to the second vehicle 110-2 in step S14. Upon having received and stored the softidentity reference at the communicator 220 of the second vehicle 110-2, a message com-prising a unique identity of the second vehicle communicator 220 is sent to the connectivitynode 120 in step S15.
    The connectivity node 120 may then send a confirmation to the second vehicle 110-2 thatthe soft identity reference is activated. ln some embodiments, it is desired to reduce the time period between the moment whenthe first vehicle 100-1 determines to leave the platoon 100 and the moment in time whenthe second vehicle 110-2 takes over the gateway responsibility and the soft identity refer-ence/ MCIM. This is because if the first vehicle 100-1 suddenly have to stop and urgentlyleave the platoon 100, the second vehicle 110-2 has to take over the gateway responsibilitybefore the distance between the first vehicle 100-1 and the other vehicles 110-2, 110-3 inthe platoon 100 becomes too large for the inter vehicular communication. lt may thus be anadvantage in some embodiments, to appoint the second vehicle 110-2 to become the fu-ture gateway, or to be a backup gateway in different embodiments. ln case the secondvehicle 110-2 acts as a backup gateway, the soft identity reference may be shared be-tween the first vehicle 110-1 and the second vehicle 110-2, in some embodiments.
    Figure 4 illustrates an example of a method 400 according to an embodiment. The flowchart in Figure 4 shows the method 400 in a first vehicle 110-1 associated with a soft iden-tity reference such as a MCIM. The first vehicle 110-1 is acting as a gateway in a platoon100, comprising a plurality of vehicles 110-1, 100-2, 100-3. The method 400 aims at trans-ferring the soft identity reference to a second vehicle 110-2 in the platoon 100. 570-15 2016-05-19 Description for filing1 3 The reason for transferring the soft identity reference may be that the first vehicle 110-1has to leave the platoon 100 in some embodiments. The reason may also be to distributethe communication efforts made when acting as gateway between the vehicles 110-1, 100-2, 100-3 in the platoon 100. Another reason may be that the communicator 210 of the firstvehicle 110-1 has too low capacity, or is malfunctioning.
    The communication between the first vehicle 110-1 and the communication network node130 and the connectivity node 120 is made over a first wireless communication interfacewhile the communication between the first vehicle 110-1 and the other vehicles 110-2, 110- 3 in the platoon 100 is made over a second wireless communication interface. ln order to be able to transfer the soft identity reference, the method 400 may comprise anumber of steps 401-406. However, some of these steps 401 -406 may be performed solelyin some alternative embodiments, like e.g. steps 401 and/ or step 406. Further, the de-scribed steps 401-406 may be performed in a somewhat different chronological order thanthe numbering suggests. The method 400 may comprise the subsequent steps: Step 401, which only may be performed in some embodiments, comprises receiving a re-sponse from at least one vehicle 110-2, 100-3 in the platoon 100, as a response to atransmitted request to transfer the soft identity reference from the first vehicle 100-1 to an-other vehicle 110-2, 100-3 in the platoon 100.
    The transmitted request relates to computing capacity of a respective communicator 220 ofthe other vehicles 110-2, 110-3 in the platoon 100.
    The transmitted request may be broadcasted to all other vehicles 110-2, 100-3 in the pla-toon 100, informing about the change of gateway in the platoon 100 in some embodiments.The transmitted request may alternatively be sent to a subset of the other vehicles 110-2,100-3 in the platoon 100, such as e.g. only one particular vehicle 110-2, 100-3, that mayhave been predetermined to inherit the gateway assignment.
    The received response may comprise a device specific identity such as e.g. MSISDN and/or the IMSI, of the respective communicator 220 of the at least one vehicle 110-2, 100-3 inthe platoon 100.
    Step 402 comprises determining to transfer the soft identity reference to the second vehi-cle 110-2. 570-15 2016-05-19 Description for filing1 4 ln some embodiments, it may be determined to transfer the soft identity reference to thesecond vehicle 110-2, based on the received 401 response. ln some further embodiments, the request may relate to a signalling capacity check, or acomputing capacity check. Thus it may be determined to transfer the soft identity referenceto the second vehicle 110-2, based on the signalling capacity of the communicator 220 ofthe second vehicle 110-2.
    According to some embodiments, it may be determined to transfer the soft identity refer-ence to the second vehicle 110-2 when the second vehicle 110-2 is the last vehicle 110-1,110-2, 110-3 in the platoon 100, to leave the platoon 100. ln some embodiments, it may be determined to transfer the soft identity reference to thesecond vehicle 110-2, based on a predetermined time scheme and/ or a predeterminedranked list of other vehicles 110-2, 110-3 in the platoon 100, to inherit the gateway assign-ment.
    Step 403 comprises transmitting a message to a communication network node 130 that thefirst vehicle 110-1 is going to discontinue acting as gateway.
    This message may trigger an inactivation of any active session between the communica-tion network node 130 and the first vehicle 110-1, and starts to buffer data which is to bedistributed to vehicles 110-1, 110-2, 110-3 in the platoon 100, when a new gateway vehicleis assigned.
    Step 404 comprises transmitting a message to a connectivity node 120 for inactivating thesoft identity reference associated with the first vehicle 110-1.
    This message may comprise the device identity of the communicator of the second vehicle110-2 in some embodiments. Thereby, the connectivity node 120 is enabled to dissociatethe soft identity reference from the first vehicle 110-1 (or rather the device identity of thecommunicator 210 of the first vehicle 110-1), and instead associate this soft identity refer-ence with the second vehicle 110-2, or rather the device identity of the second communica-tor 220 of the second vehicle 110-2.
    Step 405 comprises transferring the soft identity reference to the determined 402 secondvehicle 110-2. 570-15 2016~05~19 Description for filing1 5 This information may be sent in a dedicated message over the second communication in-terface to the second vehicle 110-2.
    When the second communicator 220 of the second vehicle 110-2 has installed the softidentity reference, a message may be sent to the connectivity node 120 with the deviceidentity of the second communicator 220 of the second vehicle 110-2.
    The connectivity node 120 is thereby enabled to compare the device identity of the secondcommunicator 220 previously received from the first communicator 210 of the first vehicle110-1, with the currently received device identity of the second communicator 220. ln casethey coincide, the communication between the network and the vehicles 110-1, 110-2, 110-3 in the platoon 100 may be continued with the second vehicle 110-2 acting as gateway. ln some embodiments, a downlink confirmation may be sent to the second vehicle 110-2by the connectivity node 120, to confirm that the gateway transfer is completed.
    Step 406, which only may be performed in some embodiments, comprises displaying in-formation in the first vehicle 110-1, concerning which vehicle 110-1, 110-2, 110-3 in theplatoon 100, that for the moment is acting as gateway in the platoon 100. ln some embodiments, it may be displayed in all vehicles 110-1, 110-2, 110-3 in the pla-toon 100, which vehicle 110-1, 110-2, 110-3 that is the gateway for the moment. Therebythe driver becomes aware that the own vehicle 110-1, 110-2, 110-3 is the current gatewayand that he/ she has to pass over the soft identity reference and ascertain that anothervehicle 110-2, 110-3 in the platoon 100 is going to take over the responsibility of the gate-way.
    Figure 5 presents a system 500. The system 500 aims at transferring a soft identity refer-ence from a first vehicle 110-1 to a second vehicle 110-2 in a platoon 100, wherein the first vehicle 110-1 is acting as a gateway for vehicles 110-1, 110-2, 110-3 in the platoon 100.
    The system 500 comprises a connectivity node 120, for associating soft identity referenceswith a particular vehicle 110-1, 110-2, 110-3.
    Further, the system 500 also comprises a communication network node 130 for communi-cating information related to vehicles 110-1, 110-2, 110-3 in the platoon 100.
    The system 500 additionally comprises a first communicator 210 in the first vehicle 110-1, 570-15 2016~05~19 Description for filing1 6 wherein the first vehicle 110-1 is acting as a gateway in the platoon 100. The first commu-nicator 210 is associated with a soft identity reference. The platoon 100 comprises a plural-ity of vehicles 110-1, 110-2, 110-3. The first communicator 210 is configured to transfer thesoft identity reference to a second vehicle 110-2 in the platoon 100. Further the first com-municator 210 is configured to determine to transfer the soft identity reference to the sec-ond vehicle 110-2. The first communicator 210 is in addition configured to transmit a mes-sage to a communication network node 130 that the first vehicle 110-1 is going to discon-tinue acting as gateway within the platoon 100. Furthermore, the first communicator 210 isalso configured to transmit a message to a connectivity node 120 for inactivating the softidentity reference associated with the first vehicle 110-1. The first communicator 210 isadditionally furthermore configured to transfer the soft identity reference to the determinedsecond vehicle 110-2. ln some embodiments, the first communicator 210 may in some embodiments be config-ured to receive a response from at least one vehicle 110-2, 100-3 in the platoon 100, as aresponse to a transmitted request to transfer the soft identity reference from the first vehi-cle 100-1 to another vehicle 110-2, 100-3 in the platoon 100. Further, in some embodi-ments, the first communicator 210 may be configured to display information in the first ve-hicle 110-1, concerning which vehicle 110-1, 110-2, 110-3 in the platoon 100 that for themoment is acting as gateway in the platoon 100.
    The first communicator 210 may comprise a communication unit 510 configured for receiv-ing and transmitting information over an inter-vehicular wireless communication interface.
    The first communicator 210 may further comprise a processor 520 configured for perform-ing various calculations for conducting the method 400 according to at least some of thepreviously described method steps 401-406 for transferring the soft identity reference fromthe first vehicle 110-1 to a second vehicle 110-2 in the platoon 100.
    Such processor 520 may comprise one or more instances of a processing circuit, i.e. aCentral Processing Unit (CPU), a processing unit, an Application Specific Integrated Circuit(ASIC), a microprocessor, or other processing logic that may interpret and execute instruc-tions. The herein utilised expression ”processor” may thus represent a processing circuitrycomprising a plurality of processing circuits, such as, e.g., any, some or all of the onesenumerated above.
    Furthermore, the first communicator 210 may comprise a memory 525 in some embodi-ments. The optional memory 525 may comprise a physical device utilised to store data or 570-15 2016~05~19 Description for filing1 7 programs, i.e., sequences of instructions, on a temporary or permanent basis. According tosome embodiments, the memory 525 may comprise integrated circuits comprising silicon-based transistors. The memory 525 may comprise e.g. a memory card, a flash memory, aUSB memory, a hard disc, or another similar volatile or non-volatile storage unit for storingdata such as e.g. ROM (Read-Only Memory), PROM (Programmable Read-Only Memory),EPROM (Erasable PROM), EEPROM (Electrically Erasable PROM), etc. in different em-bodiments.
    Further, the first communicator 210 may comprise yet a communication unit 530, config-ured for receiving and transmitting information over a first wireless communication interfacewith the network nodes such as the connectivity node 120 and the communication networknode 130.
    The previously described method steps 401-406 to be performed in the first communicator210 in the first vehicle 110-1 may be implemented through the one or more processors 520within the first communicator 210, together with a computer program product for performingat least some of the functions of the steps 401-406. Thus a computer program product,comprising instructions for performing the steps 401-406 in the first communicator 210 mayperform the method 400 comprising at least some of the steps 401-406 for transferring thesoft identity reference to a second vehicle 110-2 in the platoon 100, when the computerprogram is loaded into the one or more processors 520 of the first communicator 210.
    The described steps 401 -406 thus may be performed by a computer algorithm, a machineexecutable code, a non-transitory computer-readable medium, or a software instructionsprogrammed into a suitable programmable logic such as the one or more processors 520in the first communicator 210 in various embodiments.
    The computer program product mentioned above may be provided for instance in the formof a data carrier carrying computer program code for performing at least some of the step401-406 according to some embodiments when being loaded into the one or more proces-sors 520 of the first communicator 210. The data carrier may be, e.g., a hard disk, a CDROM disc, a memory stick, an optical storage device, a magnetic storage device or anyother appropriate medium such as a disk or tape that may hold machine readable data in anon-transitory manner. The computer program product may furthermore be provided ascomputer program code on a server and downloaded to the first communicator 210 re- motely, e.g., over an Internet or an intranet connection.
    Figure 6 illustrates an example of a method 600 according to an embodiment. The flow 570-15 2016~05~19 Description for filing1 8 chart in Figure 6 shows the method 600 in a second vehicle 110-2 in a platoon 100 com-prising a plurality of vehicles 110-1, 110-2, 110-3, for starting to act as gateway in the pla-toon 100 and receiving a soft identity reference such as a MCIM, from a first vehicle 110-1. ln order to be able to start acting as gateway in the platoon 100, the method 600 may com-prise a number of steps 601-606. However, some of these steps 601-606 may be per-formed solely in some alternative embodiments, like e.g. steps 601 and/ or step 606. Fur-ther, the described steps 601-606 may be performed in a somewhat different chronologicalorder than the numbering suggests. The method 600 may comprise the subsequent steps: Step 601, which only may be performed in some embodiments, comprises transmitting aresponse to the first vehicle 110-1, in response to a request received from the first vehicle110-1, to transfer the soft identity reference from the first vehicle 110-1 to the second vehi-cle 110-2 in the platoon 100, in order to enable the first vehicle 110-1 to determine to trans-fer the soft identity reference to the second vehicle 110-2.
    The request may be received in a broadcast from the first vehicle 110-1, requesting e.g.Communicator capacity, computing capacity, etc., of the second communicator 220 in thesecond vehicle 110-2. ln the transmitted response, a device identity of the communicator 220 may be provided insome embodiments. However, in other embodiments, the first vehicle 110-1, may alreadyhave been provided with the device identity of the second vehicle communicator 220.
    Step 602 comprises receiving a soft identity reference from the first vehicle 110-1.
    Upon receiving the soft identity reference, it is installed in the second communicator 220.
    Step 603 comprises transmitting a message to a connectivity node 120 for associating thesoft identity reference with the second vehicle 110-2.
    The message may comprise the device identity of the second vehicle communicator 220. ltis thereby enabled for the connectivity node 120 to compare the device identity of the sec-ond vehicle communicator 220 with a previously received device identity of the secondvehicle communicator 220, received from the first vehicle 110-1. lf these coincide, the con-nectivity node 120 is enabled to dissociate the soft identity reference from the first vehicle110-1 (or rather the device identity of the communicator 210 of the first vehicle 110-1), andinstead associate this soft identity reference with the second vehicle 110-2, or rather the 570-15 2016-05-19 Description for filing1 9 device identity of the second Communicator 220 of the second vehicle 110-2. Thus thesecond communicator 220 of the second vehicle 110-2 becomes the new gateway for theplatoon 100.
    Step 604 comprises communicating messages related to vehicles 110-1, 110-2, 110-3 inthe platoon 100 with a network node 130 over a first wireless communication interface.
    Step 605 comprises communicating information related to vehicles 110-1, 110-2, 110-3 inthe platoon 100, with the respective vehicles 110-1, 110-2, 110-3 over a second wireless communication interface.
    Step 606, which only may be performed in some embodiments, comprises displaying in-formation in the second vehicle 110-2, concerning which vehicle 110-1, 110-2, 110-3 in theplatoon 100, that for the moment is acting as gateway in the platoon 100. ln some embodiments, it may be displayed in all vehicles 110-1, 110-2, 110-3 in the pla-toon 100, which vehicle 110-1, 110-2, 110-3 that is the gateway for the moment. Therebythe driver becomes aware that the own vehicle 110-1, 110-2, 110-3 is the current gatewayand that he/ she has to pass over the soft identity reference and ascertain that anothervehicle 110-2, 110-3 in the platoon 100 is going to take over the responsibility of the gate-way.
    Figure 7 presents a second communicator 220 in a second vehicle 110-2 in a platoon 100comprising a plurality of vehicles 110-1, 110-2, 110-3. The second communicator 220 aimsat starting to act as gateway in the platoon 100. The second communicator 220 is config-ured to receive a soft identity reference from the first vehicle 110-1. Further, the secondcommunicator 220 is configured to transmit a message to a connectivity node 120 for as-sociating the soft identity reference with the second vehicle 110-2. Additionally, the secondcommunicator 220 is configured to communicate messages related to vehicles 110-1, 110-2, 110-3 in the platoon 100 with a network node 130 over a first wireless communicationinterface. Further, the second communicator 220 is also configured to communicate infor-mation related to vehicles 110-1, 110-2, 110-3 in the platoon 100, with the respective vehi-cles 110-1, 110-2, 110-3 over a second wireless communication interface. ln some embodiments, the second communicator 220 may also be configured to transmit aresponse to the first vehicle 110-1, in response to a request received from the first vehicle110-1, to transfer the soft identity reference from the first vehicle 110-1 to the second vehi-cle 110-2 in the platoon 100, in order to enable the first vehicle 110-1 to determine to trans- 570-15 2016~05~19 Description for filing fer the soft identity reference to the second vehicle 110-2.
    Furthermore, the second communicator 220 may also be configured to display informationin the second vehicle 110-2, concerning which vehicle 110-1, 110-2, 110-3 in the platoon100, that for the moment is acting as gateway in the platoon 100. Such display of infor-mation may be made e.g. on an output unit or presentational device such as e.g. a display,a loudspeaker, a projector, a head-up display, a display integrated in the windshield of thevehicle 110-2, a display integrated in the dashboard of the vehicle 110-2, a tactile device, aportable device of the vehicle driver/ owner, intelligent glasses of the vehicle driver/ owner,etc.; or a combination thereof.
    The second communicator 220 may comprise a communication unit 710 configured forreceiving and transmitting information over an inter-vehicular wireless communication inter-face.
    The second communicator 220 may further comprise a processor 720 configured for per-forming various calculations for conducting the method 600 according to at least some ofthe previously described method steps 601-606 for the second vehicle 110-2 to start actingas gateway in the platoon 100.
    Such processor 720 may comprise one or more instances of a processing circuit, i.e. aCentral Processing Unit (CPU), a processing unit, an Application Specific Integrated Circuit(ASIC), a microprocessor, or other processing logic that may interpret and execute instruc-tions. The herein utilised expression “processor“ may thus represent a processing circuitrycomprising a plurality of processing circuits, such as, e.g., any, some or all of the onesenumerated above.
    Furthermore, the second communicator 220 may comprise a memory 725 in some em-bodiments. The optional memory 725 may comprise a physical device utilised to store dataor programs, i.e., sequences of instructions, on a temporary or permanent basis. Accordingto some embodiments, the memory 725 may comprise integrated circuits comprising sili-con-based transistors. The memory 725 may comprise e.g. a memory card, a flash mem-ory, a USB memory, a hard disc, or another similar volatile or non-volatile storage unit forstoring data such as e.g. ROM (Read-Only Memory), PROM (Programmable Read-OnlyMemory), EPROM (Erasable PROM), EEPROM (Electrically Erasable PFlOM), etc. in dif-ferent embodiments.
    Further, the second communicator 220 may comprise yet a communication unit 730, con- 570-15 2016-05-19 Description for filing21 figured for receiving and transmitting information over a first wireless communication inter-face with the network nodes such as the connectivity node 120 and the communicationnetwork node 130.
    The previously described method steps 601-606 to be performed in the second communi-cator 220 in the first vehicle 110-1 may be implemented through the one or more proces-sors 720 within the second communicator 220, together with a computer program productfor performing at least some of the functions of the steps 601-606. Thus a computer pro-gram product, comprising instructions for performing the steps 601-606 in the secondcommunicator 220 may perform the method 600 comprising at least some of the steps601-606 for the second communicator 220 to start acting as gateway in the platoon 100,when the computer program is loaded into the one or more processors 720 of the second communicator 220.
    The described steps 601 -606 thus may be performed by a computer algorithm, a machineexecutable code, a non-transitory computer-readable medium, or a software instructionsprogrammed into a suitable programmable logic such as the one or more processors 720in the second communicator 220 in various embodiments.
    The computer program product mentioned above may be provided for instance in the formof a data carrier carrying computer program code for performing at least some of the step601-606 according to some embodiments when being loaded into the one or more proces-sors 720 of the second communicator 220. The data carrier may be, e.g., a hard disk, a CDROM disc, a memory stick, an optical storage device, a magnetic storage device or anyother appropriate medium such as a disk or tape that may hold machine readable data in anon-transitory manner. The computer program product may furthermore be provided ascomputer program code on a server and downloaded to the second communicator 220remotely, e.g., over an Internet or an intranet connection.
    The terminology used in the description of the embodiments as illustrated in the accompa-nying drawings is not intended to be limiting of the described methods 400, 600; communi-cators 210, 220 computer programs, and/ or system 500. Various changes, substitutionsand/ or alterations may be made, without departing from invention embodiments as definedby the appended claims.
    As used herein, the term "and/ or" comprises any and all combinations of one or more ofthe associated listed items. The term “or” as used herein, is to be interpreted as a mathe-matical OR, i.e., as an inclusive disjunction; not as a mathematical exclusive OR (XOR), 570-15 2016~05~19 Description for filing22 unless expressly stated otherwise. ln addition, the singular forms "a", "an" and "the" are tobe interpreted as “at least one", thus also possibly comprising a plurality of entities of thesame kind, unless expressly stated otherwise. lt will be further understood that the terms"includes", "comprises", "including" and/ or "comprising", specifies the presence of statedfeatures, actions, integers, steps, operations, elements, and/ or components, but do notpreclude the presence or addition of one or more other features, actions, integers, steps,operations, elements, components, and/ or groups thereof. A single unit such as e.g. aprocessor 520, 720 may fulfil the functions of several items recited in the claims. The merefact that certain measures are recited in mutually different dependent claims does not indi-cate that a combination of these measures cannot be used to advantage. A computer pro-gram may be stored/ distributed on a suitable medium, such as an optical storage mediumor a solid-state medium supplied together with or as part of other hardware, but may alsobe distributed in other forms such as via Internet or other wired or wireless communicationsystem.
    权利要求:
    Claims (14)
    [1] 1. A method (400) in a first vehicle (110-1) associated with a soft identity reference,wherein the first vehicle (110-1) is acting as a gateway in a platoon (100), comprising aplurality of vehicles (110-1, 100-2, 100-3), for transferring the soft identity reference to asecond vehicle (110-2) in the platoon (100), which method (400) comprises: determining (402) to transfer the soft identity reference to the second vehicle (110-2); transmitting (403) a message to a communication network node (130) that the firstvehicle (110-1) is going to discontinue acting as gateway; transmitting (404) a message to a connectivity node (120) for inactivating the softidentity reference associated with the first vehicle (110-1); and transferring (405) the soft identity reference to the determined (402) second vehi-cle (110-2).
    [2] 2. The method (400) according to claim 1, further comprising: receiving (401) a response from at least one vehicle (110-2, 100-3) in the platoon(100), as a response to a transmitted request to transfer the soft identity reference from thefirst vehicle (100-1) to another vehicle (110-2, 100-3) in the platoon (100); and wherein it isdetermined (402) to transfer the soft identity reference to the second vehicle (110-2), basedon the received (401) response.
    [3] 3. The method (400) according to claim 2, wherein the transmitted request relates tocomputing capacity of a communicator (220) of the other vehicles (110-2, 110-3) in theplatoon (100).
    [4] 4. The method (400) according to any of claim 2 or claim 3, wherein the transmittedrequest is broadcasted to all other vehicles (110-2, 100-3) in the platoon (100), informingabout the change of gateway in the platoon (100).
    [5] 5. The method (400) according to any of claims 1-4, further comprising: displaying (406) information in the first vehicle (110-1), concerning which vehicle(110-1, 110-2, 110-3) in the platoon (100) that for the moment is acting as gateway in theplatoon (100).
    [6] 6. The method (400) according to any of claims 1-5, wherein it is determined (402) totransfer the soft identity reference to the second vehicle (110-2) when the second vehicle(110-2) is the last vehicle (110-1, 110-2, 110-3) in the platoon (100), to leave the platoon 570-15 2016~05~19 Description for filing24 (1 oo).
    [7] 7. The method (400) according to any of claims 1-6, wherein communication be-tween the first vehicle (110-1) and the communication network node (130) and the connec-tivity node (120) is made over a first wireless communication interface; and communicationbetween the first vehicle (110-1) and the other vehicles (110-2, 110-3) in the platoon (100) is made over a second wireless communication interface.
    [8] 8. A first communicator (210) in a first vehicle (110-1), associated with a soft identityreference, wherein the first vehicle (110-1) is acting as a gateway in a platoon (100), com-prising a plurality of vehicles (110-1, 110-2, 110-3), for transferring the soft identity refer-ence to a second vehicle (110-2) in the platoon (100), which communicator (210) is config-ured to: determine to transfer the soft identity reference to the second vehicle (110-2); transmit a message to a communication network node (130) that the first vehicle(110-1) is going to discontinue acting as gateway; transmit a message to a connectivity node (120) for inactivating the soft identityreference associated with the first vehicle (110-1); and transfer the soft identity reference to the determined second vehicle (110-2).
    [9] 9. A computer program comprising program code for performing a method (400) ac-cording to any of claims 1-7 when the computer program is executed in a first communica-tor (210), according to claim 8.
    [10] 10.ity of vehicles (110-1, 110-2, 110-3), for starting to act as gateway in the platoon (100), A method (600) in a second vehicle (110-2) in a platoon (100) comprising a plural- which method (600) comprises: receiving (602) a soft identity reference from the first vehicle (110-1); transmitting (603) a message to a connectivity node (120) for associating the softidentity reference with the second vehicle (110-2); communicating (604) messages related to vehicles (110-1, 110-2, 110-3) in theplatoon (100) with a network node (130) over a first wireless communication interface; and communicating (605) information related to vehicles (110-1, 110-2, 110-3) in theplatoon (100), with the respective vehicles (110-1, 110-2, 110-3) over a second wirelesscommunication interface.
    [11] 11. The method (600) according to claim 10, further comprising:transmitting (601) a response to the first vehicle (110-1), in response to a request 570-15 2016~05~19 Description for filing received from the first vehicle (110-1), to transfer the soft identity reference from the firstvehicle (110-1) to the second vehicle (110-2) in the platoon (100), in order to enable thefirst vehicle (110-1) to determine to transfer the soft identity reference to the second vehicle(110-2).
    [12] 12.prising a plurality of vehicles (110-1, 110-2, 110-3), for starting to act as gateway in the A second Communicator (220) in a second vehicle (110-2) in a platoon (100) com- platoon (100), which communicator (220) is configured to: receive a soft identity reference from the first vehicle (110-1); transmit a message to a connectivity node (120) for associating the soft identityreference with the second vehicle (110-2); communicate messages related to vehicles (110-1, 110-2, 110-3) in the platoon(100) with a network node (130) over a first wireless communication interface; and communicate information related to vehicles (110-1, 110-2, 110-3) in the platoon(100), with the respective vehicles (110-1, 110-2, 110-3) over a second wireless communi- cation interface.
    [13] 13.cording to any of claims 10-11 when the computer program is executed in a communicator A computer program comprising program code for performing a method (400) ac- (220), according to claim 12.
    [14] 14.to a second vehicle (110-2) in a platoon (100), wherein the first vehicle (110-1) is acting asa gateway for vehicles (110-1, 110-2, 110-3) in the platoon (100), which system (500)comprises: A system (500) for transferring a soft identity reference from a first vehicle (110-1) a connectivity node (120), for associating soft identity references with a particularvehicle (110-1, 110-2,110-3); a communication network node (130) for communicating information related tovehicles (110-1, 110-2, 110-3) in the platoon (100); a first communicator (210) according to claim 7 in the first vehicle (110-1); and a second communicator (220) according to claim 11 in the second vehicle (110-2).
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    法律状态:
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    申请号 | 申请日 | 专利标题
    SE1650698A|SE539923C2|2016-05-23|2016-05-23|Methods and communicators for transferring a soft identity reference from a first vehicle to a second vehicle in a platoon|SE1650698A| SE539923C2|2016-05-23|2016-05-23|Methods and communicators for transferring a soft identity reference from a first vehicle to a second vehicle in a platoon|
    PCT/SE2017/050412| WO2017204712A1|2016-05-23|2017-04-27|Methods and communicators for transferring a soft identity reference from a first vehicle to a second vehicle in a platoon|
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