DE102013219380A1 - Method and device for processing communication signals in a vehicle - Google Patents

Method and device for processing communication signals in a vehicle

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Publication number
DE102013219380A1
DE102013219380A1 DE201310219380 DE102013219380A DE102013219380A1 DE 102013219380 A1 DE102013219380 A1 DE 102013219380A1 DE 201310219380 DE201310219380 DE 201310219380 DE 102013219380 A DE102013219380 A DE 102013219380A DE 102013219380 A1 DE102013219380 A1 DE 102013219380A1
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Germany
Prior art keywords
vehicle
antennas
terminal
antenna
communication
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Pending
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DE201310219380
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German (de)
Inventor
Helmut Kellermann
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Bayerische Motoren Werke AG
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Bayerische Motoren Werke AG
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Priority to DE201310219380 priority Critical patent/DE102013219380A1/en
Publication of DE102013219380A1 publication Critical patent/DE102013219380A1/en
Application status is Pending legal-status Critical

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06Receivers
    • H04B1/10Means associated with receiver for limiting or suppressing noise or interference induced by transmission
    • H04B1/1081Reduction of multipath noise

Abstract

A vehicle communication device for processing communication signals exchanged between a portable terminal (30) disposed in the interior of a vehicle (1) and the vehicle communication device is proposed. The vehicle communication device comprises at least two antennas (10, 20) arranged in the vehicle and a transceiver unit (5) which is coupled to the at least two antennas (10, 20). The transmitting / receiving unit (5) provides transmission data for the at least two antennas (10, 20) and processes reception data provided to the transmitting / receiving unit (5) from the at least two antennas (10, 20). The vehicle communication device is designed to determine a transit time difference (T0) arising during the transmission of a first communication signal between the terminal (30) and a first antenna (10) of the at least two antennas (10, 20) and of a contentually identical second one Communicating signal between the terminal (30) and a second antenna (20) of the at least two antennas (10, 20) due to different distances of the first and second antennas (10, 20) to the terminal (30); in case of reception, performing a correlation of the communication signals adjusted by the transit time difference (T0) in order to eliminate any additionally received communication signals of one or more interferers (40) from the correlated communication signals and to provide the correlated communication signals as received data; and / or in the transmission case to transmit the transmission data by the delay difference (T0) with a time delay via the first and the second antenna (10, 20) to the terminal (30), so that the terminal (30) has a correlation between the first and the second Can perform communication signal.

Description

  • The invention relates to a vehicle communication device and a method for processing communication signals exchanged between a portable terminal disposed in the interior of a vehicle and the vehicle communication device.
  • In current vehicles, data may be shared between a portable terminal such as a cellular phone, a smartphone, a portable computer, a tablet PC, etc., and a vehicle-side transceiver using a wireless communication standard such as Bluetooth , Kleer, etc., or using a cellular standard such. GSM or LTE, etc., to form a femto or picocell. For this purpose, the vehicle has a corresponding antenna, which detects the interior of the passenger compartment and allows the transmission of the data by means of communication signals to the portable terminal. This antenna can be called an indoor antenna. Using the same or a different communication standard, the data transmitted from the terminal to the vehicle (transceiver) is then transmitted via another antenna from the interior of the vehicle (i.e., the passenger compartment) to a mobile radio cell (i.e., the exterior). As other communication standards can this z. As UMTS (Universal Mobile Telecommunications System), LTE (Long Term Evolution) are used. In this way, data can be transmitted from the passenger compartment to the outside space via relaying, and vice versa.
  • A problem with this approach is that communication in the passenger compartment between the terminal and the transceiver unit of the vehicle may be easily disturbed or even prevented by other communication terminals located outside the passenger compartment in the reception area of the indoor antenna. This is the case, for example, when one or more pedestrians with respective communication terminals are in the vicinity of the vehicle or when, in the event of a traffic jam, many other vehicles are in the vicinity of the vehicle, the occupants of which are a communication terminal using a communication standard Communication standard in the passenger compartment corresponds, use. In such situations, since the plurality of communication terminals share a communication channel (eg, WLAN) with the portable terminal, the bandwidth available to the portable terminal greatly drops.
  • It is an object of the present invention to provide a vehicle communication device and a method for processing communication signals, which are structurally and / or functionally improved and do not have the above disadvantages.
  • This object is achieved by a vehicle communication device according to the features of claim 1 and a method according to the features of claim 11. Advantageous embodiments will be apparent from the dependent claims.
  • A vehicle communication device for processing communication signals exchanged between a portable terminal disposed in the interior of a vehicle and the vehicle communication device is proposed. The vehicle communication device comprises at least two antennas arranged in the vehicle and a transceiver unit which is coupled to the at least two antennas. The transmitting / receiving unit is configured to provide transmission data for the at least two antennas and to process reception data which are provided to the transmitting / receiving unit by the at least two antennas for processing.
  • The vehicle communication device is designed to determine a transit time difference, which occurs during the transmission of a first communication signal between the terminal and a first antenna of the at least two antennas and a similar content second communication signal between the terminal and a second antenna of the at least two antennas results in different distances of the first and second antenna to the terminal.
  • The vehicle communication device is designed to perform a correlation of the communication signals adjusted by the transit time difference in the case of reception in order to eliminate any additionally received communication signals of one or more interferers from the correlated communication signals and to provide the communication signals correlated with one another as received data. The vehicle communication device is further configured, in the transmission case, the transmission data by the determined transit time difference with a time delay via the first and the second antenna to the Terminal to transmit, so that the terminal can perform a correlation between the first and the second communication signal.
  • There is further proposed a method of processing communication signals exchanged between a portable terminal disposed in the interior of a vehicle and a vehicle communication device. The vehicle communication device comprises at least two antennas arranged in the vehicle and a transceiver unit which is coupled to the at least two antennas. The transmitting / receiving unit is configured to provide transmission data for the at least two antennas and to process reception data which are provided to the transmitting / receiving unit by the at least two antennas for processing.
  • In the method, a transit time difference is determined by the vehicle communication device, resulting in the transmission of a first communication signal between the terminal and a first antenna of the at least two antennas and a similar content second communication signal between the terminal and a second antenna of the at least two antennas due results in different distances of the first and second antenna to the terminal.
  • Furthermore, in the case of reception, a correlation of the communication signals adjusted by the transit time difference is carried out or determined in order to eliminate any additionally received communication signals of one or more interferers from the correlated communication signals and to provide the communication signals correlated with one another as received data.
  • In the transmission case, the transmission data is transmitted to the terminal in a delay-delayed manner via the first and the second antenna, in order to enable the terminal to perform a correlation between the first and the second communication signal.
  • When in the present description of a "reception case" is mentioned, this is to be understood from the perspective of the vehicle communication device. That is, in the reception case, the portable terminal is the transmitter and the vehicle communication device is the receiver of the communication.
  • In the present specification, if a "transmission case" is mentioned, this is also to be understood from the perspective of the vehicle communication device. That is, in the transmission case, the portable terminal is the receiver and the vehicle communication device is the transmitter of the communication.
  • An interferer is another communication terminal that is in the vicinity of the vehicle and whose communication signals can be received from at least one of the at least two antennas of the vehicle communication device. Such another communication terminal may be, for example, a mobile phone, a smartphone, a WLAN base station, etc.
  • It should be noted that the above-mentioned first communication signal and the second communication signal are not different communication signals comprising different data. It should be expressed by the choice of words only that a signal over two different propagation paths between transmitter and receiver is transmitted. The first communication signal is transmitted between the portable terminal and the first antenna. The second communication signal is transmitted between the portable terminal and the second antenna.
  • If, for example, a communication signal is transmitted by the portable terminal in the reception case, it propagates according to the radiation from an antenna of the terminal in the passenger compartment, wherein the first communication signal at a first time from the first antenna and the second communication signal at a second time from the second antenna is received. In general, the first and the second time will be different due to different distances to the first and second antenna. In principle, the first and second times can be the same. The first and second communication signals are then further processed by the transmitting / receiving unit as receive data, i. H. a correlation of the two communication signals is carried out, wherein the communication signal first received by the transmitting / receiving unit is delayed by the previously determined transit time difference before the correlation.
  • If, in the opposite case, transmission data is to be transmitted from the transmitting / receiving unit to the portable terminal, then the transmission data is timed consecutively with a previously determined one Delay of the first and the second antenna emitted as first and second communication signal. The first communication signal from the first antenna and the second communication signal from the second antenna then arrive at the portable terminal at the same time. The first and second communication signals are further processed by the terminal, which can perform a correlation of the two communication signals.
  • By the invention it is possible to shield the passenger compartment against interferers well. The shielding takes place here in an active manner by the use of multiple antennas. In order to perform the method, at least two antennas (i.e., so-called indoor antennas) must be provided in the vehicle communication device of the vehicle. By superimposing the communication signals exchanged between the plurality of antennas and the portable terminal, the useful signal of the portable terminal can be separated from the interior space from other signals outside the passenger compartment.
  • Compared with a passive shielding of the vehicle, for example by the provision of infrared protective glazing, results in a more cost-effective solution. Compared to passive measures, it is also possible to achieve a better damping compared with the disturbing communication terminals. In contrast to passive measures, such as the aforementioned infrared protective glazing, the proposed approach can also be used in convertibles and vehicles with a plastic body or a carbon body.
  • In an expedient embodiment, each of the at least two antennas has a viewing angle in which a communication signal can be emitted or received, wherein the at least two antennas are arranged such that their viewing angles overlap. In other words, this means that each of the at least two antennas can thereby receive a communication signal transmitted by the portable terminal in order to be able to correlate the correlation of the signals received at different points in time. Likewise, a respective signal transmitted by the antennas communication signal can be received by the portable terminal, wherein depending on the distances of the terminal to the first antenna and the second antenna, the communication signals are optionally received at different times.
  • The at least two antennas are arranged and configured such that each viewing angle completely or almost completely covers an interior space of the vehicle. Thereby, the proposed method can be carried out, regardless of where in the vehicle the terminal is located.
  • It is expedient if the first antenna is arranged on the B-pillar of the left side of the vehicle in the direction of travel and the second antenna on the B pillar of the right-hand side of the vehicle in the direction of travel. If more than two antennas are provided, then two further antennas can additionally be arranged on the A pillar of the left side of the vehicle in the direction of travel and on the A pillar of the right side of the vehicle in the direction of travel. Alternatively, two antennas may additionally be arranged on the C pillar of the left side of the vehicle in the direction of travel and on the C pillar of the right side of the vehicle in the direction of travel. If only one further antenna is provided, it can be provided in the passenger compartment at the front (eg on the dashboard or in the headliner) or at the rear (eg on the rear shelf or on the roof lining). There are also combinations of said arrangements conceivable.
  • In another advantageous embodiment, four antennas are provided, two of which are arranged in the direction of travel on the left of the A and C pillars and two in the direction of travel on the right of the A and C pillars. It is expedient if the antennas each have a viewing angle of 90 °. This arrangement is expedient in particular in vehicles in which users using end devices sit behind (so-called rear orientation).
  • According to a further expedient embodiment, in the transmission case the transit time difference can be determined by the transceiver of the vehicle by a cross-correlation of the first and the second communication signal and the determination of a maximum value of the cross-correlation. According to one embodiment of the method according to the invention in the transmission case, the transit time difference is determined by the transceiver of the vehicle by a cross-correlation of the first and the second communication signal and the determination of a maximum value of the cross-correlation. For this purpose, the transmitting / receiving device may comprise a commercially available correlation receiver.
  • In the case of reception, the transit time difference can be determined by a localization unit of the transmitting / receiving device, which can determine the position of the terminal in the vehicle and the distances of the terminal to the at least two antennas. According to one embodiment of the method according to the invention, the transit time difference is determined in the receiving case by a localization of the transceiver to determine the position of the terminal in the vehicle and the distances of the terminal to the at least as antennas.
  • According to one embodiment of the device, the same communication signal can be emitted by the at least two antennas. According to one embodiment of the method according to the invention, the same communication signal is emitted by the at least two antennas. This means that the at least two antennas are of the same type and operate during communication with the portable terminal with the same communication standard.
  • Corresponding to this, a transmitted by the terminal communication signal is receivable by the at least two antennas. According to one embodiment of the method according to the invention is received by the at least two antennas emitted by the terminal communication signal. This means that the at least two antennas are of the same type and operate during communication with the portable terminal with the same communication standard.
  • For example, WLAN, Bluetooth or Kleer can be used as the communication standard, whereby the last-mentioned communication method can be used in particular for the transmission of audio and video data between the portable terminal and the transceiver unit of the vehicle.
  • The invention will be described in more detail below with reference to an embodiment.
  • Show it:
  • 1 a schematic representation of a vehicle from above with a vehicle communication device according to the invention;
  • 2 a graphical representation of a correlation used in the context of the method according to the invention; and
  • 3 a further graphical representation of a correlation used in the context of the inventive method.
  • Like in the 1 illustrated, the vehicle longitudinal axis (x-axis) of the vehicle extends 1 in leaf level from bottom to top. The vehicle transverse axis (y-axis) extends in leaf level from left to right. The in the vehicle 1 provided vehicle communication device for processing communication signals, which is arranged between a vehicle in the interior, portable terminal 30 and the vehicle communication device includes, by way of example, two in the vehicle 1 arranged antennas 10 . 20 as well as a transmitting / receiving unit 5 , which with the first and the second antenna 10 . 20 is coupled for signal exchange. The vehicle communication device may further comprise a further antenna (external antenna), which is provided for communication with a mobile radio cell outside the vehicle to data of the terminal 30 to be transmitted via relaying via the vehicle communication device to the mobile radio cell.
  • The first antenna 10 is at the B-pillar of the left side of the vehicle in the direction of travel 1 arranged, with one between the straights 11 . 12 formed viewing angle the vehicle interior of the vehicle 1 almost completely covered. The second antenna 20 is located on the B-pillar of the right side of the vehicle in the direction of travel, with one between the straight lines 21 . 22 formed viewing angle the vehicle interior of the vehicle 1 also almost completely covered. The viewing angles of the antennas result from the emission and reception characteristics of the first and the second antenna 10 . 20 , Ideally, the viewing angles are designed such that they best cover the interior of the vehicle. How out 1 is readily apparent, the viewing angles of the first and second antenna 10 . 20 designed such that they overlap.
  • In the in 1 illustrated embodiment, the vehicle communication device comprises only two antennas 10 . 20 on opposite sides of the interior with respect to Vehicle longitudinal axis of the vehicle 1 are arranged. In a different embodiment, the vehicle communication device could also comprise more than two antennas. The number of antennas can be even or odd. In an even number of antennas, these are preferably arranged on opposite sides left and right with respect to the vehicle longitudinal axis. Alternatively or additionally, it may be provided to provide at least one antenna in the front and in the rear. A realization of the method described below is possible if the vehicle interior is detected technically by more than two antenna signals.
  • In the further description, reference will be made to a vehicle communication device, as in FIG 1 shown, incorporated by reference. In the vehicle 1 is the portable terminal 30 , For example, a mobile station, a smartphone or a tablet PC arranged. The terminal is located for example in a shelf of a center console of the vehicle, spaced from the vehicle longitudinal axis, not shown, which is symmetrical with respect to the sides of the vehicle. It follows that the distance between the terminal 30 and the second antenna 20 shorter than the distance between the terminal 30 and the first antenna 10 , The duration of a first communication signal between the terminal 30 and the first antenna 10 is exchanged is thus longer than the duration of a second communication signal that between the terminal 30 and the second antenna 20 is exchanged. This circumstance is used, by a superposition (correlation) of the first and the second communication signal, the useful signal that is inside the passenger compartment (ie the interior) between the terminal 30 and the antennas 10 . 20 to be separated from interference signals from outside the vehicle.
  • In 1 are exemplary two disturbers 40 . 50 outside the vehicle 1 shown. A first disturber 40 is located on the left side of the vehicle with respect to the vehicle's longitudinal axis 1 , a second disturber 50 located with respect to the vehicle longitudinal axis of the vehicle 1 On the right side.
  • In the case of reception by the first antenna 10 in addition to the first communication signal, a transmission signal S I1 (hereinafter interference signal S I1 ) of the second interferer 50 detected. Accordingly, in the case of reception by the second antenna 20 in addition to the second communication signal, a transmission signal S I2 (hereinafter interference signal S I2 ) of the first interferer 40 detected. In case of reception is the terminal 30 The transmitter, the vehicle communication device, represents the receiver of the communication. This situation can be expressed by the following equations, where, in the case of reception S F10, the reception signal of the first antenna 10 , S F20 the received signal of the second antenna 10 and S N is the transmission signal of the terminal 30 (Useful signal) represents.
  • The vehicle-fixed antennas 10 . 20 receive the following signals: S F10 (t) = a * S N (t) + b * S I2 (t) (1) S F20 (t) = c * S N (t-T 0 ) + d * S I1 (t) (2)
  • Here T 0 represent the transit time difference of S N (useful signal) with respect to the antennas 10 . 20 and a, b, c, d> 0 are each path-dependent attenuations. The individual signals S N , S I1 , S I2 are uncorrelated from each other. Ie. it applies: + ∞ / -∞S I1 (t) · S I2 (t-T) dt = 0, for all T (3) ∫ + ∞ / -∞S N (t) · S I2 (t - T) dt = 0, for all T (4) ∫ + ∞ / -∞S N (t) · S I1 (t - T) dt = 0, for all T (5)
  • In equations (3) to (5), T represents an arbitrary time shift. Equations (3) to (5) represent the cross-correlation functions, respectively.
  • For the cross-correlation S (T) of S F10 and S F20 : S (T) = f + ∞ / -∞S F10 (t) · S F20 (t-T) dt (6)
  • The maximum value of S (T) is determined by dS (T) / dT = 0 with S (T)> 0. From this, the transit time difference T 0 between the first and the second communication signal can be determined. The cross correlation from the signals according to equations (1) and (2) is shown graphically in FIG 2 shown.
  • If one delays the signal S F10 by T 0 and correlates it with S F20 then:
    Figure DE102013219380A1_0002
  • This correlation corresponds to an autocorrelation and is graphically in 3 shown. All other terms that result from the multiplication become zero due to the cross-correlation (equations (3) to (5)) and are therefore not included in equation (7). This means the disturbers 40 . 50 are no longer contained in S (t - T 0 ). The signal S (t - T 0 ) corresponds to that of the terminal 30 emitted (original) signal and can be smoothly through the transmitting / receiving device 5 demodulated and decoded.
  • In a digital realization, the upper and lower limits are realized by finite values of sufficient length. The length here must be correspondingly large in order to ensure a sufficient signal-to-noise ratio for reliable demodulation / decoding. The larger the length, the better the achievable selectivity.
  • In the transmission case is the terminal 30 the receiver and the vehicle communication device represent the transmitter of the communication, the transmission data about the first and the second antenna 10 . 20 sending out. In the case of transmission through the terminal 30 the first communication signal of the first antenna 10 , the second communication signal of the second antenna 20 as well as the interfering signals of the interferers 40 . 50 detected. This situation can be expressed by the following equations, wherein in the transmission case S F10 the transmission signal (or first communication signal) of the first antenna 10 , S F20 the transmission signal (or second communication signal) of the second antenna 10 and S I1 , S I2 the interfering signals of the interferers 40 . 50 are. S F10 and S F20 comprise the same payload data intended for the terminal.
  • The terminal 30 receives the following signals: S N (t) - a • S F10 (t) + b • S F20 (t - T 0 ) + c • S I1 (t) + d • S I2 (t) (8)
  • As in the case of reception, a, b, c, d represent the path-dependent attenuations. These are each greater than 0.
  • There is no correlation between both S F10 (t), S I1 (t), S I2 (t). There is also no correlation between S F20 (t), S I1 (t), S I2 (t). On the other hand, there is a correlation between S F10 (t) and S F20 (t) with a maximum of cross-correlation for T 0 , as can be seen from equations (3) to (5), since the transmission data is both via the first antenna 10 as well as the second antenna 20 to be sent out.
  • For the autocorrelation of S N , the following equation (9) holds, and only the terms (9a) to (9d) having a correlation are listed. S (T) = ∫ + ∞ / -∞S N (t) · S N (t-T) dt = (9) = ∫ + ∞ / -∞a 2 S F10 (t) S S F10 (t-T) dt + (9a) + ∫ + ∞ / -∞b 2 S F20 (t) · S F20 (t - T) dt + (9b) + ∫ + ∞ / -∞ a · b · S F10 (t) · S F20 (t-T) dt + (9c) + ∫ + ∞ / -∞a · b · S F10 (t - T) · S F20 (t) dt (9d)
  • All other terms (products) that result from substituting equation (8) into equation (9) and out-multiplication are identical zero because there is no correlation. These terms are therefore omitted. There are two maximas for T = T 0 (cross-correlation) from the terms (9c) and (9d) and T = 0 (autocorrelation) from the terms (9a) and (9b). Due to the size of the passenger compartment, the Maximas are in practice very close to each other or overlap.
  • If one evaluates the signal according to equation (9) for each time step for T = 0 or T = T 0 , one obtains a signal that is free of the interference signals S I1 and S I2 . This signal, which corresponds to the signals S F10 or S F20 , can pass through the terminal without interference 30 demodulated and decoded. For this the terminal must 30 have a correlation receiver.
  • Alternatively, a transmission of the second communication signal S F20 delayed by the transit time difference T 0 can take place with respect to the first communication signal S F10 . The transit time difference T 0 is the transmitting / receiving device 5 from the receiving case described above, or may be by a localization of the terminal 30 be determined by triangulation.
  • In a digital implementation, the upper and lower limits are expediently realized by finite values of sufficient length. The length here must be correspondingly large in order to ensure a sufficient signal-to-noise ratio for reliable demodulation and decoding.
  • The two disturbers 40 . 50 are in the described embodiment, only exemplary of two interferers outside the vehicle. The principle described is also applicable to more than two interferers and broadband background noise
  • LIST OF REFERENCE NUMBERS
  • 1
    vehicle
    5
    Transmission / reception means
    10
    first antenna
    11
    front view angle of the first antenna 10
    12
    rear view angle of the first antenna 10
    20
    second antenna
    21
    front view angle of the second antenna 20
    22
    rear view angle of the second antenna 20
    30
    terminal
    40
    first disturber
    50
    second disturber
    S F10
    Transmission signal / reception signal of the first antenna 10
    S F20
    Transmission signal / reception signal of the second antenna 20
    S N
    Transmission signal / reception signal of the terminal 30
    S I1
    Transmission signal of the first interferer 40 (Noise)
    S I2
    Transmission signal of the second interferer 50 (Noise)
    T 0
    Skew

Claims (15)

  1. Vehicle communication device for processing communication signals between a portable terminal ( 30 ) in the interior of a vehicle ( 1 ) and the vehicle communication device are exchanged, comprising: - at least two antennas arranged in the vehicle ( 10 . 20 ); A transmitting / receiving unit ( 5 ), which are connected to the at least two antennas ( 10 . 20 ) for providing transmission data for the at least two antennas ( 10 . 20 ) and for receiving received data, which the transmitting / receiving unit ( 5 ) of the at least two antennas ( 10 . 20 ) are made available for processing; wherein the vehicle communication device is designed to: - determine a transit time difference (T 0 ), which occurs during the transmission of a first communication signal between the terminal ( 30 ) and a first antenna ( 10 ) of the at least two antennas ( 10 . 20 ) and a content-wise same second communication signal between the terminal ( 30 ) and a second antenna ( 20 ) of the at least two antennas ( 10 . 20 ) due to different distances of the first and second antenna ( 10 . 20 ) to the terminal ( 30 ) results; In the case of reception, to carry out a correlation of the communication signals, which have been cleared by the transit time difference T 0 , in order to additionally receive additionally received communication signals of one or more interferers. 40 ) eliminate the correlated communication signals and provide the correlated communication signals as receive data; and / or - in the transmission case, the transmission data by the transit time difference (T0) with a time delay via the first and the second antenna ( 10 . 20 ) to the terminal ( 30 ), so that the terminal ( 30 ) can perform a correlation between the first and the second communication signal.
  2. Vehicle communication device according to claim 1, wherein each of the at least two antennas ( 10 . 20 ) a viewing angle ( 11 . 12 ; 21 . 22 ), in which a communication signal can be emitted or received, wherein the at least two antennas ( 10 . 20 ) are arranged such that their viewing angle ( 11 . 12 ; 21 . 22 ) overlap.
  3. Vehicle communication device according to claim 2, in which the at least two antennas ( 10 . 20 ) are arranged and designed such that each viewing angle ( 11 . 12 ; 21 . 22 ) an interior of the vehicle ( 1 completely or almost completely covered.
  4. Vehicle communication device according to claim 2 or 3, in which the first antenna ( 10 ) on the B-pillar of the left side of the vehicle in the direction of travel ( 1 ) and the second antenna ( 20 ) on the B-pillar of the right side of the vehicle in the direction of travel ( 1 ) is arranged.
  5. Vehicle communication device according to claim 2 or 3, in which the first antenna ( 10 ) on the A-pillar of the left side of the vehicle in the direction of travel ( 1 ), the second antenna ( 20 ) on the A-pillar of the right-hand side of the vehicle ( 1 ), a third antenna on the C-pillar of the left side of the vehicle in the direction of travel ( 1 ) and a fourth antenna on the C-pillar of the right side of the vehicle in the direction of travel ( 1 ) are arranged.
  6. Vehicle communication device according to one of the preceding claims, wherein in the transmission case, the transit time difference (T 0 ) by the transceiver device ( 5 ) can be determined by a cross-correlation of the first and the second communication signal and the determination of a maximum value of the cross-correlation.
  7. Vehicle communication device according to one of the preceding claims, in which the transceiver device ( 5 ) comprises a correlation receiver.
  8. Vehicle communication device according to one of the preceding claims, in which, in the receiving case, the transit time difference (T 0 ) is determined by a localization unit of the transceiver device ( 5 ), which determines the position of the terminal ( 30 ) in the vehicle and the distances of the terminal ( 30 ) to which at least how antennas can determine.
  9. Vehicle communication device according to one of the preceding claims, in which the at least two antennas ( 10 . 20 ) the same communication signal can be transmitted.
  10. Vehicle communication device according to one of the preceding claims, in which the at least two antennas ( 10 . 20 ) one from the terminal ( 30 ) emitted communication signal is receivable.
  11. Method for processing communication signals between a portable terminal ( 30 ) in the interior of a vehicle ( 1 ) and a vehicle communication device, comprising: - at least two antennas arranged in the vehicle ( 10 . 20 ); A transmitting / receiving unit ( 5 ), which are connected to the at least two antennas ( 10 . 20 ) for providing transmission data for the at least second antennas ( 10 . 20 ) and for receiving received data, which the transmitting / receiving unit ( 5 ) of the at least two antennas ( 10 . 20 ) are made available for processing; wherein the vehicle communication device: - determines a transit time difference (T 0 ), which occurs during the transmission of a first communication signal between the terminal ( 30 ) and a first antenna ( 10 ) of the at least two antennas ( 10 . 20 ) and a content-wise same second communication signal between the terminal ( 30 ) and a second antenna ( 20 ) of the at least two antennas ( 10 . 20 ) due to different distances of the first and second antenna ( 10 . 20 ) to the terminal ( 30 ) results; In the case of reception, a correlation of the communication signals adjusted by the transit time difference (T 0 ) is carried out in order to additionally receive, if necessary, received communication signals of one or more interferers ( 40 ) from the correlated communication signals and to provide the correlated communication signals as receive data; and / or - in the transmission case the transmission data by the transit time difference (T 0 ) with a time delay via the first and the second antenna ( 10 . 20 ) to the terminal ( 30 ) transmits to the terminal ( 30 ) to perform a correlation between the first and the second communication signal.
  12. Method according to Claim 11, in which, in the transmission case, the transit time difference (T 0 ) is determined by the transceiver device ( 5 ) is determined by a cross-correlation of the first and the second communication signal and the determination of a maximum value of the cross-correlation.
  13. Method according to Claim 11 or 12, in which, in the case of reception, the transit time difference (T 0 ) is obtained by localization of the transceiver device ( 5 ) to determine the position of the terminal ( 30 ) in the vehicle and the distances of the terminal ( 30 ) to the at least two antennas ( 10 . 20 ).
  14. Method according to one of Claims 11 to 13, in which the at least two antennas ( 10 . 20 ) the same communication signal is sent out.
  15. Method according to one of claims 11 to 14, in which by the at least two antennas ( 10 . 20 ) one from the terminal ( 30 ) received communication signal is received.
DE201310219380 2013-09-26 2013-09-26 Method and device for processing communication signals in a vehicle Pending DE102013219380A1 (en)

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US9922472B2 (en) 2016-08-16 2018-03-20 Ford Global Technologies, Llc Vehicle communication status indicator

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US20080233965A1 (en) * 2007-03-21 2008-09-25 Mark Kent Method and system for adaptive allocation of feedback resources for cqi and transmit pre-coding
DE102007039914A1 (en) * 2007-08-01 2009-02-05 Lindenmeier, Heinz, Prof. Dr. Ing. Diversity antenna system with two antennas for radio reception in vehicles
US20100266062A1 (en) * 2009-04-17 2010-10-21 Mussmann David E Distributed maximal ratio combining receiver architecture

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US20080233965A1 (en) * 2007-03-21 2008-09-25 Mark Kent Method and system for adaptive allocation of feedback resources for cqi and transmit pre-coding
DE102007039914A1 (en) * 2007-08-01 2009-02-05 Lindenmeier, Heinz, Prof. Dr. Ing. Diversity antenna system with two antennas for radio reception in vehicles
US20100266062A1 (en) * 2009-04-17 2010-10-21 Mussmann David E Distributed maximal ratio combining receiver architecture

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9922472B2 (en) 2016-08-16 2018-03-20 Ford Global Technologies, Llc Vehicle communication status indicator

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