• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:

    公开号:NL8502208A
    申请号:NL8502208
    申请日:1985-08-09
    公开日:2001-02-01
    发明作者:
    申请人:Siemens Ag；Standard Elektrik Lorenz Ag；
    IPC主号:
    专利说明:

    Relay station for wireless messaging.
    Technical area.
    The invention relates to a relay station for the transmission of messages via radio transmission between two subscriber stations, consisting of a receiver which can be synchronized on the sending subscriber station and a transmitter with a transmission frequency which has a sufficiently large interference distance to the receiving frequency of the receiver and a cross-sectional connection between the receiver output and the transmitter input for transmitting the useful signals received from the sending subscriber station to the transmitter for retransmission to the receiving subscriber station.
    Underlying state of the art.
    In radio networks, there is a need from time to time to increase the transmission range of a separate subscriber station belonging to such a radio network or, also, due to unfavorable topographic ratios of subscriber stations present in shadow areas, to enable a secure radio link to remote subscriber stations. For this purpose, use is made of a special transmitting receiving station which, on the one hand, can certainly receive a transmitting subscriber station and, moreover, the receiving subscriber station can also certainly receive the transmitter of this transmitting receiving station, to be designated as a relay station. Relay stations of this type are known, for example, from DT 24 02 810 A1.
    Since in such a relay station the transmitter and receiver are present in the same place, it must be ensured that the electromagnetic energy emitted by the transmitter cannot become active in the input of the receiver, since this energy will block this receiver by overdriving. In other words, it must be ensured that with such a relay station receiver and transmitter always operate at different frequencies, the mutual frequency distance of which must be chosen so great that the minimum requirements to be imposed on the interference distance are fulfilled.
    In general, in the case of mobile radio networks in tactical application, additional special measures must be taken which make the desired radio connections resistant to the intended interference. In order to achieve this increased interference resistance, it is known to change the radio frequency with short time intervals in a larger frequency range, such as, for example, from the literature reference UE ..... 3T 30 726 A1, 26tll 1. The application of such a frequency jump method to a radio link between two subscriber stations interposing a relay station makes it necessary to divide the frequency jump range per se for the receiver and transmitter of this relay station into a lower band and an upper band. A pseudo-random radio frequency change in the lower band and, at the same time, such a pseudo-random radio frequency change in the upper band can be carried out on the partial connection path between the transmitter of the relay station and the receiving subscriber station on the sub-connection path between the transmitting subscriber station and the relay station. In this way, the correct separation between the receive frequency and the transmit frequency of the relay station is maintained and the minimum distance requirements can also be adhered to without any difficulties. However, it is disadvantageous in this solution that the frequency bandwidth per se available for the frequency jump, based on one of the mentioned partial connection ranges, is each halved. Namely, the interference resistance achievable by such a frequency hopping method is proportional to the bandwidth of the available frequency hopping range.
    The object of the invention is to provide a solution for the relay station, in order to perform a jam-resistant message transmission between two subscriber stations while interleaving a relay station of the type described in the preamble, while maintaining the minimum required interference distance between the transmission frequency and the reception frequency thereof, makes it possible to fully utilize the frequency jump range available per se on both partial connection paths.
    With a relay station of the type according to the invention according to the invention, this task is thus fulfilled that, when a frequency hopping method is applied between the time control for the frequency hopping device of the transmitter and of the receiver, a further cross-sectional connection for fixing the transmitter on the synchronization of the receiver synchronized to the transmitting subscriber station, and that the frequency hopping devices of receiver and transmitter, each of which has a synthesizer controlled by a frequency address memory of a pseudo-random memory addresses, are designed such that the synthesizer they have in synchronization within a common frequency band simultaneously generated jump frequency series between the respective activated receive and transmit frequencies always maintain the required minimum interference distance
    The invention is based on the insight that a distribution of the available frequency hopping range in a lower band for one sub-connection section and an upper hand for the other sub-connection section of the subscriber stations for frequency hopping operation to be connected via the relay station can be dispensed with, if a Appropriate cross-sectional connection between the receiver and the transmitter ensures that upon completion of the synchronization procedure between the sending subscriber station and the receiver of the relay station, the synchronization of the receiver is transferred to the transmitter of the relay station. The synchronization of the frequency hopping operation of the transmitter by the synchronization on the side of the receiver thus provides, in an extremely advantageous manner, the possibility of having pseudo-random frequency hopping operation in the entire available frequency band on both sub-connection routes without any danger, which sometimes also occurs on occasion. minimum requirements for the interference distance between the receive frequency and the transmit frequency are no longer met.
    Further advantageous versions of the relay station are specified in subclaims 2 to 6.
    The invention will be further explained with reference to the drawings, in which:
    Fig. 1 shows a relay radio connection in a schematic representation;
    Fig. 2 shows a relay station according to the invention constructed with two subscriber stations;
    Fig. 3 shows the block diagram of a relay station consisting of a receiver and a transmitter;
    Fig. 4 shows the block diagram of a variant of the relay station of FIG. 3;
    Fig. 5 shows a schematic representation for the design and control of the frequency address memory of the frequency jumpers of transmitter and receiver of the relay station of Figs. 3 and 4; and
    Fig. 6 shows a further schematic representation for the implementation and control of the frequency address memory of the frequency hopping devices of transmitter and receiver of the relay station of FIGS. 3 and 4.
    The radio connection according to the schematic representation thereof in Fig. 1 has two subscriber stations S / El and S / E2, each with an antenna A. Since a direct connection is not possible due to the distance or due to unfavorable terrain conditions between these two subscriber stations. , the radio link is made via the relay station RS, which consists of a receiver E and a transmitter S, the antenna A of which is connected via an antenna coupling AK. is connected to the input of receiver E on the one hand and to the output of transmitter S on the other. When establishing a connection, starting, for example, from the subscriber station S / El, the connection between this subscriber station and the relay station RS is first established and in this connection the required synchronization procedure is established between the transmitting subscriber station S / El and the receiver E of the relay station RS performed. According to the invention, when performing a frequency hopping method, the synchronization of the receiver E is transmitted to the transmitter S and the connection is established from the transmitter S of the relay station RS to the receiving subscriber station S / E2.
    The relay station RS, as the schematic representation thereof according to Fig. 2 indicates, can be composed of two subscriber stations S / E, which cooperate, so to speak, back to back. The cooperation takes place via two cross-site connections SSV1 and SSV2, of which the cross-site connection SSV1 further transmits the information transmitted by the sending subscriber station and received by the receiving part of one subscriber station S / E to the transmitter of the other subscriber station S / E. The cross-sectional link SSV2 is required to transfer the synchronization from the receiver of one subscriber station to the transmitter of the other subscriber station. The relay station RS of fig. 1 is shown again in fig. 3 in a block diagram, which indicates further details. On the input side, the receiver E has a high-frequency receiving section HF-E, in which the successive received signal bursts with different high-frequency carrier frequencies are converted into a medium-frequency plane and then applied to a time expander ZEX. The time expander ZEX converts the discontinuously incoming information stream into a continuous signal stream and delivers it in this form to the transmitter S. The output of the high-frequency receiving part HF-E is at the input of a synchronous information receiver SYN-E which filters out the synchronous information from the incoming signals and applies it to the ZST time control. The time control ZST has a series of clock outputs T for the further assemblies of the receiver E and also controls the key generator SG for the pseudo-random generation of memory addresses for calling frequency addresses stored in the frequency address memory FAS1 for the synthesizer SYS. This synthesizer supplies the HF-E receiving part with the conversion oscillation vibrations required each time for converting to a predetermined intermediate frequency position.
    The key generator SG controlled by the time control ZST forms, together with the frequency address memory FAS1 and the synthesizer SYS, the frequency hopping device of the receiver E. In case the signal subscriber station S / E1 of FIG. In addition, following information bursts of transmitted signal are encrypted, a decryption is generally required in receiver E of relay station RS before the signal can be delivered to transmitter S in continuous form. This fact is shown in broken line in Fig. 3 in the form of a decryption ESR in the connection path between the high-frequency receiving part HF-E and the time expander ZEX. The required key information is supplied to the decryptor ESR by the key generator SG in the same manner as the frequency address memory FAS1.
    The transmitter S of the relay station RS is constructed in the same way as the receiver. The information to be transmitted, which is present at the output of the time expander ZEX in continuous form, is supplied via the cross-sectional connection SSV1 to the time compander ZCOM of the transmitter, which is then re-inserted into the signal to be transmitted by the transmitter S. successive information bursts. From the output of the time compander ZCOM, the information in the given case is supplied to the high-frequency transmission part HF-S t after performing encryption in the encryption SSR. According to the receiver E, the information bursts in the high-frequency transmitting part HF-S are converted into the high-frequency position and they are supplied to the antenna A via the antenna coupling AK.
    The high-frequency carrier wave, which varies from information burst to information burst pseudo-randomly in its frequency, is again generated by a frequency hopping device which, in the same way as with the receiver E, from the key generator SG controlled by the time control ZST of the transmitter in connection with the frequency address memory FAS2. and synthesizer SYS is formed.
    The transmitter's key generator SG also provides the key signal for the encryptor SSR when necessary. In the connecting path between the key generator SG present on the transmission side and the input of the frequency address memory FAS2, another inverter I is shown in broken line, which will be discussed in conjunction with the description of FIGS. 5 and 6 below. The time controllers ZST of the receiver and transmitter cooperate via the cross-sectional connection SSV2, so that in this way transmission of the synchronization from receiver E to transmitter S is possible.
    The variant of a relay station RS of Fig. 3 shown in Fig. 4 differs from the embodiment in Fig. 3 only in that here the further cross-sectional connection SSV2 is integrated in the time control ZS2, which means that the transmitting side and the receiving side are present. time controllers have been combined into a common time control ZST 'and that this common time control ZST * controls a common key generator SG * for both frequency address memories FAS1 and FAS2 of receiver and transmitter.
    The synchronization between the receiver's frequency hopping device and the transmitter's frequency hopping device, which is made possible via the further cross-sectional link SSV2, makes it possible to demand the frequency between the receiving frequency and the transmission frequency, even with pseudo-randomly generated memory addresses for the frequency address memories FAS1 and FAS2. keep the minimum interference distance in a safe manner.
    In the schematic representation in Fig. 5 this has been achieved in this way that a different frequency collective is assigned to each of the two frequency address memories FAS1 and FAS2. In the frequency address memory FAS1, the frequency addresses stored in the memory cells from bottom to top are indicated by F1, E, F2, E, ♦, FN-1, E, FN, E. Likewise, in the memory locations of the transmitter's frequency address memory FAS2 the frequency addresses F1, S, F2, S, ···, FN — 1, S, FN, S are indicated from the bottom up.
    > The frequency collectives stored in the two frequency address memories of the receiver and transmitter are chosen such that when controlling both frequency address memories with the same memory addresses, indicated by the double arrow, the frequency addresses called up from the frequency address memories always have a high-frequency receiving frequency. and transmit the request. "Which have the minimum interference distance to be demanded.
    A further solution is indicated in Fig. 6. Here, both frequency address memories FAS1 and FAS2 have the same frequency collective FI, F2, ..., FN-1 and FN in their consecutive memory locations from bottom to top. In order to maintain the required minimum interference distance between the respective receive frequency and transmit frequency, accordingly, different memory addresses for the two frequency address memories FAS1 and FAS2 must be generated by the key generator SG. In order to achieve this, the pseudo-random memory addresses for transmitter and receiver generated by the key generator are first generated identically, and then the memory addresses on the frequency-side memory FAS2 present on the transmitter side, not directly with the receiver, but via the inverter I shown in broken lines in FIGS. 3 and 4. In this simple manner, the frequency address memories FAS1 and FAS2, as the double arrow indicates, call up sufficiently different frequency addresses for generating the high-frequency carrier waves of the receiver and transmitter.
    Taking into account the frequency collective stored in the frequency address memories FAS1 and FAS2, it is of course also possible to provide some network instead of an inverter, which performs the required address memory conversion for the frequency address memory FAS2.

    Applicability in the industry.
    The relay station described is particularly suitable for its use in tactical radio networks, in which a frequency jump operation must be used to protect against a deliberately strange interference on the radio link paths.
    List of abbreviations.
    RS relay station E receiving part S transmitting part S / E, S / El, 2 subscriber station AK antenna coupling A antenna SSV1, 2 cross-section connection HF-E high-frequency receiving part HF-S high-frequency transmitting part SYS synthesizer FAS1, 2 frequency address memory SYN-E synchronous information receiver ZST, ZST 'time control SG, SG' key generator RG call generator I inverter ESR decryption SSR encryption ZEX time expander ZCOM time compander
    权利要求:
    Claims (6)
    [1]
    1. Relay station for the transmission of radio transmission messages between two subscriber stations, consisting of a receiver and a transmitter, which can be synchronized with the transmitting subscriber station, with a transmitting frequency having a sufficiently large interference distance to the receiving frequency of the receiver, as well as a cross-sectional connection between the receiver output and the transmitter input, for transmitting the useful signals received from the transmitting subscriber station to the retransmitter transmitter to the receiving subscriber station, characterized in that when using a frequency hopping method between the time control (ZST, ZST ' ) for the frequency hopping device of the transmitter (S) and of the receiver (E), a further cross-sectional connection (SSV2) for securing the transmitter to the synchronization of the receiver synchronized to the transmitting subscriber station (S / El) is provided, and that the frequency hopping devices of transmitter and receiver, which Each have a synthesizer (SYS) controlled by a frequency address memory (FAS1, 2) generated by a pseudo-random memory addresses (SG, SG ') so that the jump frequency series they generate simultaneously in synchronization within a common frequency band always keep the required interference distance between the correctly activated receive frequency and transmit frequency.
    [2]
    Relay station according to claim 1, characterized in that the frequency address memories (FAS1, 2) of the frequency hopping device of the transmitter (S) and of the receiver (E) are based on memory addresses with different frequencies, the minimum interference distance required. addresses are stored and that the memory addresses for the frequency address memories generated by the key generators (SG, SG ') each time synchronize with each other.
    [3]
    Relay station according to claim 1, characterized in that the frequency addresses memories (FAS1, 2) of the frequency hopping device of the transmitter (S) and of the receiver (E) are stored on memory addresses, and the same frequency addresses the memory addresses for the frequency address memories each generated in time-synchronous manner are distinguished from each other in such a manner that the minimum interference distance to be required between receiving frequency and transmitting frequency is always guaranteed.
    [4]
    Relay station according to claim 3, characterized in that the time-synchronous key generators (SG, SG ') of the frequency hopping device present on the transmitting side and the receiving side have the same memory addresses for the associated frequency address memories (FAS1, 2). and that a memory-address converter, for example an inverter (I), is arranged in the connection path between one of the two key generators and the address input of the associated frequency address memory.
    [5]
    Relay station according to any one of the preceding claims, characterized in that the receiver (E) is formed by the receiving part of a first (S / E) and the transmitter (S) by the transmitting part of a second subscriber station (S / E) , and that both subscriber stations are additionally equipped for this purpose for both cross-sectional connections (SSV1, SSV2).
    [6]
    Relay station according to any one of claims 1 to 4, characterized in that a common time control (ZST) is connected to the receiver (E) and to the transmitter (S) in the sense of integrating the further cross-section connection (SSV2) into the time control. *) as well as a key generator (SG1) common to both frequency jumpers. *****
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    同族专利:
    公开号 | 公开日
    GB2326798B|1999-06-02|
    US6098189A|2000-08-01|
    DE3429454C1|1999-03-11|
    GB2326798A|1998-12-30|
    IT8521140D0|1985-06-13|
    GB8508985D0|1998-10-14|
    NL194712C|2002-12-03|
    GB8517269D0|1998-10-14|
    FR2775147B1|2000-07-13|
    NL194712B|2002-08-01|
    FR2775147A1|1999-08-20|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3407354A|1942-04-09|1968-10-22|Naval Res Lab|Motor and self-synchronous generator frequency synchronization units for swept frequency secret communications system|
    US4545061A|1962-09-28|1985-10-01|Sylvania Electric Products Inc.|Synchronizing system|
    US4193030A|1968-08-01|1980-03-11|International Telephone And Telegraph Corporation|Frequency hopping communication system|
    US3665472A|1969-10-08|1972-05-23|Sperry Rand Corp|Two-way communication system employing two-clock frequency pseudo-noise signal modulation|
    DE2402810A1|1974-01-22|1975-07-24|Bosch Elektronik Gmbh|Relay station for radio network - is suitable for relaying operations in several simplex radio networks|
    US4023103A|1976-01-26|1977-05-10|The United States Of America As Represented By The Secretary Of The Army|Synchronizer for frequency hopping receiver|
    GB2100944B|1981-06-24|1985-03-06|Racal Res Ltd|Synchronisation circuits|
    FR2518338B1|1981-12-15|1984-02-03|Thomson Csf|
    DE3230726C2|1982-08-18|1988-11-17|Siemens Ag, 1000 Berlin Und 8000 Muenchen, De|
    US4587661A|1983-03-04|1986-05-06|Rca Corporation|Apparatus for synchronizing spread spectrum transmissions from small earth stations used for satellite transmission|
    US4617674A|1983-07-14|1986-10-14|Rca Corporation|Synchronizing system for spread spectrum transmissions between small earth stations by satellite via an intermediate hop to a large earth station|
    US4653068A|1984-10-19|1987-03-24|Itt Corporation|Frequency hopping data communication system|
    US4703474A|1986-02-28|1987-10-27|American Telephone And Telegraph Company, At&T Bell Laboratories|Spread spectrum code-division-multiple-access lightwave communication system|DE102007029132B4|2007-06-25|2016-07-14|Siemens Aktiengesellschaft|Radio system for the phase-locked and amplitude-enhanced re-transmission of a received signal|
    法律状态:
    2001-02-01| A1C| A request for examination has been filed|
    2003-05-01| V2| Lapsed due to non-payment of the last due maintenance fee for the patent application|Effective date: 20030301 |
    优先权:
    申请号 | 申请日 | 专利标题
    DE3429454|1984-08-10|
    DE19843429454|DE3429454C1|1984-08-10|1984-08-10|Relay point for wireless communication|
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