The method of locating a mobile station and a base station for transmitting location information

 

The invention relates to a method for positioning a mobile station and a base station for transmission of location information. The invention consists in that the base station radiates in different directions at least two differently coded signal using each of the signals from its antenna, so the area of the base station is divided into two mutually non-overlapping sectors radiation. Depending on the location of the mobile station, it receives the signal of the antenna, in the sector of radiation which it is located. Depending on the encoding of the received signal is passed the message on the stationary station, which on the basis of this message, determine the location of the mobile radio. It also describes the implementation of the base station intended for realization of this method. The technical result achieved by the invention is to improve the accuracy of the location by implementing not only a static location, but also the dynamic location of the mobile radio. 2 S. and 4 C. p. F.-ly, 1 Il.

The present ytaste of independent claim 1 and to a base station for transmitting location information according to the restrictive part of independent claim 6 of the claims.

From application EP 0240051 A1 is known a communication system using the radio beacons. In such a system, the radio beacon installed between the two sections of the route on the route of the vehicle, while moving along a specified route the vehicle has a mobile transceiver. The beacon sends a signal with the encoded parameters. Such parameters may relate to the frequency channels of communication, addressing and identification or identification codes used in that part of the route, which has reached the specified vehicle. In a mobile transceiver send the beacon signal is used for configuring the transceiver to accept the settings. When the radio beacon transmits parameters for two adjacent sections of the route. In addition to these parameters, the beacon can send and additional information about the communication system, such as an identification code and a status parameter. Such additional data is transferred via the mobile transceiver is located along the route of the stationary transceivers and to the appropriate dispatch center.

From the application DE-OS 2644206 known radio system to transmit messages between the expressed along these routes at a given distance from each other and acting in both directions of the route, at this station one route liaise with the Central transceiver station. On sections of the route between sequentially main stations installed intermediate stations, radio relay station respectively. These radio stations are located at intermediate points on the border between the two parts of the relay are different from other radio stations that each of the two pairs of transceivers these radio stations depending on the direction in which the radiation, respectively, the reception of the signal, uses its special frequency pair. In addition, the main station for the exchange of information additionally communicate with the Central station or Cslam. The main station sends received from the Central station information in both directions for the next radio station, which then pass it on in accordance with the organization of the communication channel formed by the "chain" of radio stations. Information from the mobile station to the next relay station is transmitted further to the main station, and from it to the Central station.

From application EP 0290725 B1 hereinafter known method for determination of arr the radio and one stationary, the base station for each cell subzone of the network. The individual number of base stations are mobile stations operating in the service area or zone of action of these base stations, using the code sequence data. The number of the base station serves as the location information. Information about the intensity of the fields contained in the coded data sequence transmitted by the base station at the mobile station, and an index of the magnitude of the field intensity of radiation of the mobile stations received by the base station, serves as an additional location information.

Advantages of the invention, the Advantage of the invention method to the distinctive features of the independent p. 1 formula of the invention in comparison with known is that the base station radiates in different directions at least two differently coded signal using each of the signals from its antenna, so the area of the base station is divided into relevant, almost mutually non-overlapping sectors radiation, and depending on the location of the mobile radio it takes the signal Toya station relative to the base station, while it does not require the use of additional stations, but only enough to equip an existing base station corresponding directional antennas.

Preferred ways of exercising independent p. 1 are presented in the dependent PP.2-5.

According to one of these options is adopted in the mobile radio signal, it is preferable to pass on to the specified fixed station. Because of this there is no need for signal processing the mobile station, thereby reducing the cost of its hardware and software, and hence its value.

Further, a particular advantage consists in the possibility to set the moving of the mobile stations in the coverage area of the base station, the existence of which can be concluded in the case when during a specified period of time the mobile station receives signals with different coding. Due to this, in addition to the static location creates the opportunity to dynamically determine the location of the mobile station, and therefore, increases the accuracy of such location.

According to another site enableval the direction of movement of the mobile radio zone of the base station, that depends on the receipt of differently coded signals to this mobile station.

In yet another preferred embodiment provides for the supply of the alarm, when there is inconsistency between the actual direction of movement of the mobile station to the specified direction. Thus the proposed method can find application for Supervisory control and monitoring, for example, in security systems.

The advantage of the proposed invention the base station with the distinctive features of independent p. 6 is that there is at least two antennas that emit radio signals in different directions so that the area of the base station was subdivided into relevant, almost mutually non-overlapping sectors of the radiation, while the antenna is connected to the code generator, which is designed with the capability of issuing to each of the antenna signals, each of which has an encoding that is different from the encoding of other signals. This solution makes it possible to determine not only the location of the mobile station in one of the sectors, but moving it from one sector to another.

The drawing Below, the invention is, showing the area of the base station and the transmission of signals between this base station, mobile station, and an additional station.

The description of the exemplary embodiment In the drawing position 10 indicate the base station having the generator 40 codes. This codes generator is 40 connected to the first transmitting antenna 15 and the second transmitting antenna 20. Both the transmitting antennas 15 and 20 are directed in opposite directions, with the first antenna 15 radiates in the first sector 25, and the second antenna 20 is in the second sector 30. Both sectors 25 and 30 practically do not overlap mutually, together forming area 5 radiation and/or reception, i.e., the zone 5 of the base station 10. The mobile station 1 is located in the second sector 30, moving while in the second sector 30 sector from the first sector 25. Therefore, the position of the mobile station 1 in the first sector 25 is depicted by the dashed line, and the direction of movement of the station 1 of the first sector 25 in the second sector 30, shown by the solid arrow. The mobile station 1 is connected with a transmitting-receiving antenna 45, the host in the first sector 25 radio signals from the first transmitting antenna 15 and the second sector 30 - a radio signal from the second transmitting antenna torus 30 at station 35, outside the zone 5 of the base station 10. All the transmitted radio signals are conventionally shown in the drawing, the dotted arrows. To receive radio signals from the mobile station 1 station 35 has a receiving antenna 50.

The generator 40 generates codes radio signals with the first coding and radio signal with the second encoding that is different from the first. Radio signals from the first encoding generator 40 code issues on the first transmitting antenna 15, and a radio signal with a second encoding of the second transmitting antenna 20 for proper radiation. While radio signals with the first encoding can be taken in the first sector 25, and the radio signals with the second encoding can be taken in the adjacent, second sector 30 radiation base station 10. Thus, the encoding is information about location, allowing various sectors of the radiation can be distinguished by the different encoding radiated in their radio signals. Moving in the first sector 25, the mobile station 1 receives a radio signal from the first encoding. In response, the mobile station 1 via its transceiver antenna 45, depending on the encoding of a received signal passes the message to the station 35. This is based on 25, and therefore sent to the station 35, the message will already contain the information about the location. However, in another embodiment, the mobile station 1 may also transfer adopted by the signal without further processing station 35, and the location will be determined at the station 35, based on the encoding of this signal. The station 35 is preferably stationary and represents in the described example, the Central station Supervisory control and monitoring. However, the station 35 can be performed by the mobile that allows you to control the mobile radio station 1 in non-stationary mode, i.e. without reference to a particular place. In any case, at station 35 on the basis of the submitted mobile station 1 message determines which of the two sectors 25 and 30 is the last. Thus, if the message contains a signal, for example, with the first encoding, the station 35 determines that the mobile station 1 is located in the first sector 25. When the mobile station 1 is determined according to the signal corresponding to the information about the location and gave it as a message to the station 35, the latter on the basis of this information t is reventive and the reception by the mobile radio station 1 radio signal from the second encoded when being in the second sector 30.

Due to different encoding signals that are transmitted to the first 15 and second 20 transmitting antennas, in addition to determine in which of the two sectors 25 and 30 zone 5 of the base station 10 is currently the mobile station 1 can be identified and its movement within this zone 5 of the base station 10 when switching the radio station 1 from one sector to another. In this case, the mobile station 1 within a specified period of time receives signals with different coding. When moving the mobile station 1 of the first sector 25 in the second sector 30 she first receives radio signals from the first encoding and the radio signals from the second encoding. Therefore, if within the specified period of time, the station 35 determines the location of the mobile station 1 both sectors 25 and 30, then this station 35 concludes the movement of the mobile station 1 within zone 5 of the base station 10 for a specified period of time. In the form shown in the drawing example, it is about moving from the first sector 25 in the second sector 30. If the station registers 35 and also takes into account the points of receipt on the mobile station 1 signals with different Kadirova and 10. In the form shown in the drawing example, at station 35 from the mobile station 1 first reported its finding in the first sector 25, and then a message about it being in the second sector 30. On this basis, the station 35 may conclude that the movement of the mobile station 1 of the first sector 25 in the second sector 30. To control the direction of movement of the mobile station 1 to station 35 set the direction of movement can be compared with the specified direction. If the direction of movement of the mobile station 1 does not coincide with the predetermined direction, the station 35 generates an alarm signal.

Based on the foregoing, the proposed method is most preferable to apply to the dispatching control systems and control type of security systems that are equipped with a mobile radio station 1 guard performs, for example, bypassing the protected buildings for a given route. While on his route in the doors and corridors can be installed in the base station 10, allowing the station 35, which can be placed on the Central guard post, along with the location of the guard in one or the other side of the corridor can counter does not match, the station 35 generates an alarm signal. Even when the failure of one of the antennas 15 and 20 is still limited ability to determine the location of the mobile station 1 in the sector of radiation operable transmitting antenna. However, in this case at station 35 it is impossible to establish the direction of motion. This situation may be a sign that indicates the presence of a fault or failure in the security system, thereby allowing you to monitor the serviceability of the installed base stations 10. When using multiple base stations 10, for example, in the described security system, encoding emitted by transmitting antennas 15 and 20 radio signals differ not only between themselves, but also vary for different base stations 10. Thanks to this station 35 can uniquely identify the location and direction of movement of the mobile radio 1.

In another example of the method in the base station 10 is provided the use of more than two transmitting antennas, which are also in each case emit differently coded signals in respective directions so that the zone 5 of the base station 10 was subdivided into relevant, prakrti, which is determined by the location, movement and direction of movement of the mobile station 1 in zone 5 of the base station 10.

Claims

1. The method of locating a mobile station (I) in the zone (5) radiation and/or reception (in the zone (5) steps) at least one base station (10), characterized in that the base station (10) radiates in different directions at least two differently coded signal using each of the signals from its antenna (15, 20), resulting in a zone (5) of the base station (10) is divided into relevant, almost mutually non-overlapping sectors (25, 30) radiation, depending on the location of the mobile station (1) it receives the signal from the antenna (15, 20), in sector (25, 30) of the radiation which it is located, depending on the encoding of the received signal further preferably stationary station (35) is passed the message on to the station (35) on the basis of this message is determined by the location of the mobile station (1).

2. The method according to p. 1, characterized in that the signal received by the mobile station (1), is passed on to the station (35).

3. The method according to p. 1 or 2, the magnetic signals with different encoding that concludes the movement of the mobile station (1) in the zone (5) of the base station (10).

4. The method according to p. 3, characterized in that the direction of movement of the mobile station (1) in the zone (5) of the base station (10) is determined depending on the moment of receipt of differently coded signals to a mobile station (1).

5. The method according to p. 4, characterized in that when determining the movement of the mobile station (1) in a direction not corresponding to the specified direction, the station (35) takes the alarm.

6. The base station (10) for transmitting information about the location within the zone (5) of the radiation and/or reception zone (5) steps, characterized in that provided at least two antennas (15, 20), emitting radio signals in different directions so that the area (5) of the base station (10) were classified as appropriate, almost mutually non-overlapping sectors (25, 30) of radiation of the antenna (15, 20) is connected with a generator (40) codes and the generator (40) code configured to grant each of the antennas (15, 20) radio signals, each of which has an encoding that is different from the encoding of other signals.

 

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FIELD: mobile telecommunication systems.

SUBSTANCE: system has a set of service zones, each of which is identified by identifier of service zone. According to current method identifier of service zone is requested, which relates to current mobile station. When request is received, one identifier of service zone is selected from a set of identifiers of possible service zones. For selection given selection rule is implemented. Then, on basis of selected identifier, position information is provided for current mobile station.

EFFECT: higher precision.

3 cl, 7 dwg

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