Method, device and vehicle for asynchronous playback of wirelessly transmitted data

Abstract

The invention relates to a method for asynchronously reproducing wirelessly transmitted data from a transmitter by a data receiver of a vehicle having at least one local buffer. During the reproducing of buffered data, newly received data from the data receiver is added to the local buffer, and a delay of the reproduced data relative to the transmitter is gradually reduced until synchronization with the data transmitted live by the transmitter is achieved. The invention further relates to a method for buffering wirelessly transmitted data from a transmitter by a transmitter data service, a device for asynchronously reproducing wirelessly transmitted data in a vehicle, and a vehicle having a data receiver.

Description

[0001] The invention relates to a method for asynchronously reproducing wirelessly transmitted data from a transmitter according to the preamble of claim 1. Furthermore, the invention relates to a method for buffering wirelessly transmitted data from a transmitter according to the preamble of claim 4. Furthermore, the invention relates to a device for asynchronously reproducing wirelessly transmitted data from a transmitter according to the preamble of claim 8. Furthermore, the invention relates to a vehicle according to the preamble of claim 9.

[0002] The live transmission of audio content from a radio station, such as an analog modulated ultrashort wave (FM) transmitter or a digital Digital Audio Broadcasting (DAB) transmitter, to a moving vehicle is subject to interference and interruptions, which can be caused, for example, by topographical factors (shadowing due to surrounding elevations) or structural factors (driving through a tunnel or underpass). Such outages can affect all or just individual radio stations, depending on the transmitter location and transmission method. If a vehicle drives through a section of road affected by interference for the current station while receiving a radio signal, the audio content is typically lost or its reception quality is severely reduced for the duration of the journey.

[0003] Predictive buffering is not supported by current broadcasting methods. Resuming playback with a delay corresponding to the duration of the reception interruption is also not provided for in standard broadcasting methods. This also applies analogously to the live transmission of video content.

[0004] Document US 2011 / 0167128 A1 describes a method for wirelessly transmitting audio content to a vehicle, in which expected reception interruptions along a planned route are identified. The time intervals until reaching and leaving a reception interruption are estimated. Audio and / or video content is accessed from at least one source inside the vehicle and / or at least one source outside the vehicle in such a way that playback of this content is possible without interruption while driving through the expected reception interruption. Access to the audio and / or video content depends on the estimated duration of the interruption.

[0005] The invention is based on the object of providing an improved method for the asynchronous reproduction of wirelessly transmitted data from a transmitter by a data receiver of a vehicle. This object is achieved according to the invention by a method having the features of claim 1.

[0006] The invention is further based on the object of providing an improved method for buffering wirelessly transmitted data from a transmitter by a transmitter data service. This object is achieved according to the invention by a method having the features of claim 4.

[0007] Furthermore, the invention is based on the object of providing an improved device for reproducing wirelessly transmitted data in a vehicle. This object is achieved according to the invention by a device having the features of claim 8.

[0008] Furthermore, the invention is based on the object of providing an improved vehicle. This object is achieved according to the invention by a vehicle having the features of claim 9.

[0009] According to a first aspect of the invention, in a method for asynchronously reproducing data wirelessly transmitted by a transmitter, at least one disturbed time range is determined by a data receiver of a vehicle having at least one local buffer. A disturbed time range is understood here and below to mean a time range in which the reception of data from the transmitter, for example the reception of radio data packets from a Digital Audio Broadcast Plus (DAB+) transmitter, is likely to be disturbed. A disturbed time range can be determined, for example, from a comparison of geoposition data and / or telematics data of the vehicle with a high-resolution map (high definition map, HD map) as a time window in which an upcoming tunnel is driven through. Further exemplary embodiments for determining a disturbed time range based on a transmitter coverage map are explained in more detail below.

[0010] A recording request triggers the buffering of data sent by a transmitter in the disrupted time range. The recording request is preferably sent from the vehicle to the transmitter via a mobile data network, such as a 5G network. The transmitter data service can be offered as a service (Software as a Service, SaaS) in a cloud and made accessible via a backend. Upon receipt of the recording request, the data sent by the transmitter in the disrupted time range is stored in a vehicle-independent buffer, such as a cloud storage or a cloud database.

[0011] Data that the transmitter sends immediately before the at least one disturbed time period is locally buffered in a local buffer of the vehicle's data receiver and played back from this local buffer by the data receiver at a slower speed such that the slowed down playback of the locally buffered data covers at least the disturbed time period. For example, if a single disturbed time period (e.g., a drive through a tunnel) has an estimated duration of one minute, a data stream with a live time of nine minutes is locally buffered and played back at a reduced speed that is 90 percent of the speed specified by the transmitter. This ensures uninterrupted playback of the data when driving through the single disturbed time period. A similar procedure is followed for successive disturbed time periods.

[0012] It is advantageous, but not absolutely necessary, to predict the time of entry into a disturbed time range. Alternatively, it is also possible to continuously buffer the data stream received by the transmitter, so that even in the event of an unexpected entry into a disturbed time range, a playback can be fed from the buffer with a transmission duration (transmission time) sufficient for driving through typical smaller areas without reception (such as tunnels or underpasses). In this case, it is sufficient to send a recording request immediately upon entering such an area and to signal the transmitter data service immediately after exiting this area that buffering can be ended and the buffered data should be made available.

[0013] Immediately after each disturbed time period, the data that was temporarily stored by the transmitter data service in the vehicle-independent buffer is retrieved by the vehicle's data receiver via a mobile data connection of a mobile data network and played back at an accelerated rate such that this playback occurs seamlessly after the playback of the locally buffered data, while buffered data is played back from the data receiver, newly received data is added to the local buffer, and the delay of the played back data relative to the transmitter is gradually reduced until synchronization with the data sent live by the transmitter is achieved.

[0014] For example, the data buffered during a one-minute tunnel passage is played back at a 10 percent increased playback speed, i.e., over a period of 54.5 seconds. New data received by the data receiver during this period is buffered locally and also played back at a 10 percent increased playback speed, i.e., over a period of 49.6 seconds. Newly received data during this time is further buffered, and the process is repeated. Thus, synchronization with the transmitter is achieved again after 10 minutes.

[0015] An advantage of this method is that the data sent by the transmitter is reproduced by the vehicle's data receiver seamlessly and without any perceptible impairment, even if direct reception is interrupted for a foreseeable, limited period of time.

[0016] In one embodiment of the method, at least one disturbed time period in which disturbed reception of data from the transmitter is to be expected is determined by comparing a travel route with a transmitter coverage map. A transmitter coverage map records the possibility and optionally also the quality of reception of the transmitter depending on a geoposition. A transmitter coverage map can be created, for example, using models for the propagation of electromagnetic waves for each transmitter, optionally also depending on temporal and / or weather conditions. Empirical methods for creating transmitter coverage maps are explained in more detail below.

[0017] A route can be determined based on data entered into the vehicle's navigation system. Alternatively, a route, at least for a certain distance, can also be determined from geolocation data and a road map, preferably a high-definition (HD) map (for example, along a highway to the next exit).

[0018] If a comparison of the route with the transmitter coverage map reveals that at least part of the route passes through a geographical area without sufficient transmitter coverage, a corresponding time period of interference can be determined during which reception of the transmitter is likely to be impossible. This time period of interference can be determined, for example, based on the current vehicle speed and / or typical average speeds for road sections ahead along the route.

[0019] An advantage of this embodiment is that the generally only approximate but predictive determination of disturbed time ranges enables particularly reliable buffering by the sender data service, so that a loss of transmitted data can be avoided with a particularly high degree of probability.

[0020] In a further development of this embodiment, the transmitter coverage map is provided to the vehicle's data receiver by the transmitter data service. This enables particularly reliable and up-to-date detection of disrupted time periods (for example, depending on the time of day or weather conditions) compared to a statically stored transmitter coverage map.

[0021] According to a second aspect of the invention, in a method for buffering wirelessly transmitted data from a transmitter by a transmitter data service, a recording request is received from at least one requesting vehicle, which recording request relates to a transmitter and to at least one disturbed time range.

[0022] In response to such a recording request, the data sent by the transmitter in the at least one disturbed time range specified therein are buffered in a vehicle-independent buffer and, after buffering is complete, i.e., after each at least one disturbed time range, are made available to the requesting vehicle.

[0023] This makes it possible to capture data that the vehicle cannot actually or potentially receive directly from the transmitter, ensuring seamless playback of the transmitted content. Furthermore, the buffering effort is reduced by the time limitation. Further advantages correspond to the advantages according to the first aspect of the invention.

[0024] In one embodiment, the transmitter data service acquires at least one transmitter coverage map related to each transmitter, each with at least one geographical coverage area of ​​the respective transmitter, and provides it to the at least one requesting vehicle. This allows up-to-date and accurate transmitter coverage maps to be used for a large number of transmitters to determine time periods with interference. Furthermore, the data receiver of requesting vehicles can be simplified by being relieved of the burden of creating or storing transmitter coverage maps for different transmitters.

[0025] In a further development of this embodiment, the transmitter data service creates a transmitter coverage map for at least one transmitter by receiving from at least one vehicle the respective geoposition and information on the reception quality of the respective transmitter at that respective geoposition. The transmitter data service records the information from the at least one vehicle, typically the information from a plurality of vehicles, for various geopositions. The reception quality for geopositions for which no information has been reported can be interpolated. This allows particularly accurate and up-to-date transmitter coverage maps to be determined.

[0026] In one embodiment, the transmitter data service receives the data transmitted by the respective transmitter during the at least one disturbed time period by - at least one supporting vehicle continuously transmits its current geoposition to the transmitter data service and the transmitter data service - from the set of supporting vehicles recorded with a geoposition each, at least one supporting vehicle in a coverage area of ​​the transmitter is identified using a transmitter coverage map, - transmits the recording of the data of the at least one disturbed time period to the at least one identified supporting vehicle and - transfers the data recorded by at least one identified supporting vehicle to the vehicle-independent buffer after the disturbed time period.

[0027] This allows data from a transmitter that cannot be received directly by a data receiver of the transmitter data service, but can be received by vehicles in the vicinity of a requesting vehicle, to be buffered and made available to the requesting vehicle. The method can therefore be used for a particularly large number of transmitters.

[0028] According to a third aspect of the invention, a device for asynchronously reproducing wirelessly transmitted data in a vehicle comprises at least one data receiver and a vehicle-independent computer system. The at least one data receiver is arranged in the vehicle and configured to carry out a method according to the first aspect of the invention. The vehicle-independent computer system is configured to carry out a method according to the second aspect of the invention. The at least one data receiver and the vehicle-independent computer system are configured to exchange data via a mobile data network.

[0029] The advantages of the device correspond to the advantages of the methods according to the first and second aspects of the invention.

[0030] According to a fourth aspect of the invention, a vehicle has a data receiver configured to perform a method according to the first aspect of the invention. The advantages of such a vehicle correspond to the advantages of a method according to the first aspect of the invention.

[0031] Embodiments of the invention are explained in more detail below with reference to drawings:

[0032] Showing: Fig. 1 schematically shows a transmitter coverage map, Fig. 2 schematically connected vehicles with a transmitter earth data service and Fig. 3 schematically shows the sequence of a method for buffering and reproducing data from a transmitter in a vehicle.

[0033] Corresponding parts are provided with the same reference symbols in all drawings.

[0034] Fig. Figure 1 shows a purely schematic, scaled, transmitter coverage map 10. The transmitter coverage map 10 identifies coverage areas 11, 12 for a certain transmitter, not shown in detail here. A first coverage area 11 (shown darker here) corresponds to reception of the selected transmitter with good reception quality. A second coverage area 12 (shown brighter than the first coverage area 11 here) corresponds to reception of the selected transmitter with moderate reception quality. Outside the first and second coverage areas 11, 12, the selected transmitter is not received or is received only with inadequate quality.

[0035] The transmitter coverage map 10 is created by driving over it with Fig. 2 and Fig. 3, which are equipped with a radio receiver R with an additional measuring function. The additional measuring function records the respective reception quality of at least one, but preferably for a plurality of, transmitters. The measured reception quality is sent from the vehicle 1, 2, together with a timestamp and the geoposition of the respective measurement location, to a vehicle-independent recording service. The recording service, which is preferably implemented as a cloud service, collects the measurement data (reception quality, timestamp, geoposition) measured and transmitted by the participating vehicles 1, 2, and creates the transmitter coverage map 10 based thereon. Using this method, transmitter coverage maps 10 for many transmitters and for a large geographical area can be created particularly easily, cost-effectively, and accurately.

[0036] Optionally, an artificial intelligence (AI) process can analyze this measurement data over time and create a plurality of coverage maps 10 for each transmitter, each of which is assigned, for example, to a specific time of day and / or a specific weather situation. This allows the local distribution of reception quality to be recorded and predicted with particular accuracy.

[0037] Alternatively, a transmitter coverage map 10 suitable for the method steps described below can also be obtained by field strength measurements and / or by modeling the radio propagation, but transmitter coverage maps 10 obtained in this way are typically less precise.

[0038] Fig. 2 illustrates the method of predictive radio reception using an ego vehicle 1 and additional supporting vehicles 2. Each vehicle 1, 2 is equipped with a radio receiver R, which is configured, for example, to receive radio data packets P transmitted by a digital transmitter (not shown in detail) in Digital Audio Broadcast Plus (DAB+). The radio receivers R are further connected to a radio data server 100, which is configured to at least temporarily store radio data packets P. The radio receivers R can send radio data packets P to the radio data server 100 or receive them from it. The radio data packets P are transmitted between the radio receivers R and the radio data server 100 via a mobile data connection, for example via a 5G mobile network. Optionally, the radio data server 100 can also receive radio data packets P via its own radio receiver R.

[0039] At least the radio receiver R of the ego vehicle 1 is coupled to a navigation system N in which a route of the ego vehicle 1 is planned. The planned route is compared with the current station coverage map 10 (adapted, for example, to the respective time of day and / or weather conditions) for the currently tuned station. Preferably, the station coverage map 10 is provided by the radio data server 100 and dynamically retrieved by the ego vehicle 1 (specifying the respective current station). However, it is also possible to retrieve the station coverage map 10 via another service independent of the radio data server 100 or to store it statically.

[0040] If the ego vehicle 1 approaches a geo-area with limited, disturbed or no reception of the transmitter, the predictive radio reception described in more detail below is activated and deactivated again after leaving this geo-area.

[0041] Such a geo-area can, for example, be identified using a queried (or statically stored) transmitter coverage map 10 as an area that is covered neither by a first coverage area 11 (with good reception quality) nor by a second coverage area 12 (with moderate reception quality). Additionally or alternatively, such a geo-area can also be determined using navigation and / or topography data from the navigation system N, for example, as a planned passage through a road tunnel or underpass, or through an area impaired by radio signal shadowing due to its topographical location. In particular, telematics and navigation data can also be used to identify consecutive, but spatially non-contiguous, geo-areas in which reception of the currently selected transmitter is impaired.

[0042] By activating predictive radio reception only when needed, the radio receiver R can be put into idle mode in geo-areas with unrestricted radio reception, thus saving energy.

[0043] If, however, the ego vehicle 1 approaches a geo-area with limited reception of the (at least) currently selected station, it sends a recording request A to the radio data server 100 at a starting time t0, as in Fig. 3 is shown schematically in chronological order using a time axis t. In the example presented here, the navigation and telematics data at the starting time t0 are used to determine that reception will likely be impaired in a first disturbed time period G1 and in a second disturbed time period G2.

[0044] The first disturbed time period G1 ranges from a first time t1 (the time of the expected entry into a first disturbed geo-area) to a second time t2 (the time of the expected exit from the first disturbed geo-area). The second disturbed time period G2 ranges from a third time t3 (the time of the expected entry into a second disturbed geo-area) to a fourth time t4 (the time of the expected exit from the second disturbed geo-area).

[0045] Between the starting time t0 and the first time t1, as well as between the second time t2 and the third time t3, undisturbed reception of the radio station can be expected in a first and second undisturbed time period U1, U2 (determined based on the planned route and the transmitter coverage map 10). Purely by way of example, the first disturbed time period G1 could correspond to the passage through a first tunnel, and the second disturbed time period G2 could correspond to the passage through a second tunnel, which are passed at a certain distance from each other in which reception is not impaired on open roads.

[0046] In the first undisturbed time period U1 (beginning at the start time t0, at which the recording request A is simultaneously sent to the radio data server 100), the radio receiver R of the ego vehicle 1 slows down the playback of the radio data packets P currently received from the transmitter. For example, audio content (music, speech) is played back on average at only 80 percent of the playback speed intended by the transmitter. The slowing down occurs in such a way that it is barely audible or not at all. For example, the slowing down may not begin abruptly, but rather gradually.

[0047] The radio data packets P remaining due to the slowdown of playback (received from the transmitter but not played) are temporarily stored in a first buffer B1 locally in the ego vehicle 1. In Fig. Figure 3 shows a purely schematic and simplified representation of a linear growth of a transmission time S temporarily stored in the first buffer B1. However, as already explained, the slowing down and, accordingly, the growth of the first buffer B1 can also occur non-linearly. The first buffer B1 is configured such that the transmission time S stored therein covers at least the expected duration of the subsequent first disturbed time range G1.

[0048] Upon entering the first disturbed area (at the first time t1 or shortly thereafter), the station's reception is interrupted. The radio data packets P stored in the first buffer B1 are then played back. This gives an occupant of the ego vehicle 1 the impression of uninterrupted radio reception. The stored radio data packets P can be played back at the original playback speed (as specified by the transmitter), slowed down, or accelerated. Advantageously, the playback speed is adjusted from an updated estimate of the duration of the first disturbed time range G1 (i.e., the time required to drive through the tunnel, for example) in relation to the stored transmission time S when the actual entry into the disturbed geo-area is detected and an updated transit time is determined based on the telematics and navigation data.In this way, the transmission time S stored in the first buffer B1 is completely or almost completely “melted down” until the second time t2.

[0049] At the second time t2, live reception of the transmitter is possible again, but if the live received radio data packets P were played back directly, those radio data packets P that were actually transmitted by the transmitter during the first disturbed time period G1 would be missing.

[0050] To avoid such a playback that is not interrupted in time but has gaps in content, the predictive reception method according to the invention provides that the radio data server 100, in response to the recording request A, records the radio data packets P transmitted during the first disturbed time period G1 in a second buffer B2. The content of the second buffer B2 is transmitted from the radio data server 100 to the ego vehicle 1 and played back by the radio receiver R of the ego vehicle 1 during a first partial time period U2.1. This achieves a seamless playback of the transmitted content.

[0051] The radio data packets P transmitted during the first disturbed time period G1 can be received by the radio data server 100 via its own radio receiver R and stored in the second buffer B2. However, it is also possible, and particularly advantageous in the case where the transmitter can only be received locally (i.e., in a geo-area around the ego vehicle 1), for the radio data server 100 to instruct one or more supporting vehicles 2 to receive these radio data packets P.

[0052] For this purpose, supporting vehicles 2 log on to the radio data server 100 and continuously communicate their current geoposition. Based on the respective geoposition and the transmitter coverage map 10 for the station received by the ego vehicle 1, the radio data server 100 determines which of the supporting vehicles 2 are eligible for reception. One or more of these supporting vehicles 2 are commissioned to receive the radio data packets P and acknowledge this commission. The at least one supporting vehicle 2 stores the radio data packets P either for a period of time predetermined based on the recording request A or until the ego vehicle 1 signals the radio data server 100 that it can receive the selected station again itself (i.e., has passed the first disturbed time period G1).

[0053] The at least one supporting vehicle 2 transmits the radio data packets P received during the first disturbed time period G1 to the radio data server 100, which stores them in the second buffer B2. Preferably, the transmission takes place in a compressed data format. The transmission of the contents of the second buffer B2 to the ego vehicle 1 is also preferably compressed.

[0054] In one embodiment of the invention, the radio data packets P received by a supporting vehicle 2 during the first disturbed time period G1 can also be transmitted directly (without intermediate storage in the second buffer B2 of the radio data server 100) to the ego vehicle 1. In this case, the radio data server 100 establishes a connection between the supporting vehicle 2 and the ego vehicle 1. Such a connection can also be created in the manner of a daisy chain across multiple supporting vehicles 2 in order to bridge a larger spatial distance between the supporting vehicle 2 that received the radio data packets P and the ego vehicle 1. The intermediate supporting vehicles 2 act as repeaters.

[0055] In the ego vehicle 1, the contents of the second buffer B2 are played back starting at the second time t2 (i.e., in the first partial time range U2.1 at the beginning of the second undisturbed time range U2). Playback is necessarily delayed compared to the broadcaster's live program by the duration of the first disturbed time range G1. Playback is preferably accelerated (i.e., at a higher playback speed than the broadcaster's intended speed) to gradually reduce the delay.

[0056] The radio data packets P received by the ego vehicle 1 during the first sub-time period U2.1 but not played back live are temporarily stored in a local third buffer B3. Once the (preferably accelerated) playback of the second buffer B2 is complete, playback of the third buffer B3 begins in the second sub-time period U2.2, which immediately follows the first sub-time period U2.1. The radio data packets P received live by the ego vehicle 1 are continuously added to the local third buffer B3 at the end (i.e., in a first-in, first-out manner).

[0057] In a Fig. In a situation not shown in Figure 3, provided that no further disturbed time period G2 is foreseeable based on the telematics and navigation data, playback of the third buffer B3 can be accelerated so that the third buffer B3 is read out faster at its front end (with the most recent radio data packets P) than the radio data packets P are refilled at its rear end (with the currently live radio data packets P). This gradually reduces the playback delay compared to the live program. When the third buffer B3 is completely empty, the live program is played back without delay and at the original playback speed.

[0058] For the Fig.However, in the case of a further disturbed time period G2 shown in Figure 3, it is advantageous to fill the local third buffer B3 to such an extent that the transmission time S of the radio data packets P still stored therein at the third time t3 (the beginning of the second disturbed time period G2) corresponds to the expected time duration of traveling through the disturbed geographical area in order to achieve uninterrupted playback. For this purpose, the playback speed for both the second buffer B2 and the third buffer B3 can be adjusted as needed. If, for example, the second disturbed time period G2 is just as long as the first disturbed time period G1, the second and third buffers B2, B3 are played back (on average) at the original playback speed. If the second disturbed time period G2 is shorter than the first disturbed time period G1, the playback speed is increased compared to the original playback speed (on average).If the second disturbed time range G2 is longer than the first disturbed time range G1, the playback speed is reduced compared to the original playback speed (on average).

[0059] The radio data packets P transmitted during the second disturbed time period G2 cannot be received directly by the ego vehicle 1. They are temporarily stored in a fourth buffer B4 of the radio data server 100 and transmitted to the ego vehicle 1, and played back starting at the fourth time t4 (i.e., after the end of the second disturbed time period G2). The fourth buffer B4 is filled, transmitted, and played back in the same way as already explained for the second buffer B2. As an alternative to temporary storage in a fourth buffer B4 of the radio data server 100, these radio data packets P can also be transmitted to the ego vehicle 1 by one or more supporting vehicles 2. List of reference symbols 1 ego vehicle, vehicle 2 supporting vehicle 10 Transmitter coverage map 11, 12 first, second coverage area 100 radio data server, station data service A recording request B1 to B4 first to fourth buffer G1, G2 first, second disturbed time range N Navigation system P Radio data package, data R radio receiver, data receiver S Broadcast time t Timeline t0 start time t1 to t4 first to fourth time points U1, U2 first, second undisturbed time range U2.1, U2.2 first, second sub-time range QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] US 2011 / 0167128 A1

[0004]

Claims

[1] Method for the asynchronous reproduction of wirelessly transmitted data (P) of a transmitter by a data receiver (R) of a vehicle (1) with at least one local buffer (B1, B3), characterized by , that - at least one disturbed time range (G1, G2) with disturbed reception of the transmitter is determined, - by means of a recording request (A) at a transmitter data service (100), the buffering of data (P) of the transmitter transmitted during the disturbed time range (G1, G2) is triggered in a vehicle-independent buffer (B2, B4), - in at least one local buffer (B1, B3) of the vehicle (1), data (P) of the transmitter transmitted immediately before a disturbed time range (G1, G2) are locally buffered and reproduced by the data receiver (R) at a slower speed such that the slowed-down reproduction of the locally buffered data (P) covers the disturbed time range (G1, G2), - immediately after a disturbed time period (G1, G2), the data (P) stored in the vehicle-independent buffer (B2, B4) of the transmitter data service (100) are retrieved by the data receiver (R) via a mobile data connection and reproduced at an accelerated rate such that - this playback occurs seamlessly after the playback of the locally buffered data (P), - during the playback of buffered data (P), newly received data (P) from the data receiver (R) are added to the local buffer (B1, B3) and - the delay of the reproduced data (P) relative to the transmitter is gradually reduced until synchronization with the data (P) sent live by the transmitter is achieved. [2] Method according to claim 1, characterized by that at least one disturbed time range (G1, G2) with disturbed reception along a route of the vehicle (1) is determined using a transmitter coverage map (10). [3] Method according to claim 2, characterized by that the transmitter coverage map (10) is provided by the transmitter data service (100). [4] Method for buffering wirelessly transmitted data (P) of a transmitter by a transmitter data service (100), characterized by , that - a recording request (A) relating to a transmitter and to at least one disturbed time range (G1, G2) is received from at least one requesting vehicle (1), - the data (P) transmitted by the transmitter during the at least one disturbed time period (G1, G2) are buffered in a vehicle-independent buffer (B2, B4) and - subsequently made available to the requesting vehicle (1). [5] Method according to claim 4, characterized bythat the transmitter data service (100) records at least one transmitter coverage map (10) relating to a respective transmitter, each with at least one geographical coverage area (11, 12) of the respective transmitter, and makes it available to the at least one requesting vehicle (1). [6] Method according to claim 5, characterized by that at least one vehicle (1, 2) transmits to the transmitter data service (100) at least one geoposition-related information on the reception quality of the respective transmitter for the purpose of creating the at least one transmitter coverage map (10) of a transmitter. [7] Method according to one of claims 4 to 6, characterized by that the data (P) transmitted by the transmitter during the at least one disturbed time range (G1, G2) are received by - at least one supporting vehicle (2) continuously transmits its current geoposition to the transmitter data service (100) and the transmitter data service (100) - from the set of supporting vehicles (2) each recorded with a geoposition, at least one supporting vehicle (2) in a coverage area (11, 12) of the transmitter is determined using a transmitter coverage map (10), - transmits the acquisition of the data (P) of the at least one disturbed time range (G1, G2) to the at least one identified supporting vehicle (2) and - transfers the data (P) recorded by the at least one identified supporting vehicle (2) into the vehicle-independent buffer (B2, B4) after the disturbed time range (G1, G2). [8] Device for the asynchronous reproduction of wirelessly transmitted data (P) in a vehicle (1), characterized by that the device - at least one data receiver (R) arranged in the vehicle (1) for carrying out a method according to claim 1, and - a vehicle-independent computer system configured to carry out a method according to claim 4, - wherein the at least one data receiver (R) and the computer system are configured to exchange data (P) via a mobile data network. [9] Vehicle (1) with a data receiver (R), characterized by that the data receiver (R) is arranged to carry out a method according to claim 1.

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