Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
  • H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
  • H04W16/10—Dynamic resource partitioning
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04B—TRANSMISSION
  • H04B7/00—Radio transmission systems, i.e. using radiation field
  • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
  • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
  • H04B7/2603—Arrangements for wireless physical layer control
  • H04B7/2606—Arrangements for base station coverage control, e.g. by using relays in tunnels

Definitions

• the invention relates to an in-house subsystem in a mobile radio network consisting of a fixed home base station, at least one intermediate station (repeater) and at least one mobile station. Furthermore, the invention relates to a method for communication in a subsystem of a mobile radio network and / or a wired communication network.
• a similar subsystem and a similar method are known from international patent application WO 94/19877.
• This application shows a subsystem in a mobile radio network which has a fixed base station, an intermediate station and a plurality of mobile stations, the fixed base station being connected to an external telecommunications network and being connected to a mobile station via a transmitting / receiving antenna.
• a method for communication in a subsystem of a mobile radio network or a wired communication network is also known from this document, the base station maintaining a connection to a mobile radio network and possibly a fixed network in the subsystem consisting of several elements and forwarding this connection to the at least one mobile station
• each intermediate station must be connected to a common power supply network in order to be able to communicate with one another. Problems can arise here, particularly with larger building complexes, since the connection paths over existing power lines can be very long. This is made considerably more difficult if the power connection of the individual buildings only exist via transformer stations of the public power supply companies. If the circuits of the different buildings or of one building are not connected to the same, usually three possible phases, there are additional problems with the communication transmission.
• the inventors propose an in-house subsystem in a mobile radio network and / or a wired communication network, which consists of a fixed home base station, at least one intermediate station (repeater) and at least one mobile station, the fixed home base station including at least one connection means an external telecommunications network and at least one transmit / receive antenna for internal connection to the at least one intermediate station, the at least one intermediate station via at least one connecting element for connection either to the home base station or to a further intermediate station and at least one transmit / receive antenna for connection to either the has at least one mobile station or a further intermediate station and the at least one mobile station has a transmitting / receiving antenna for communication with the mobile radio network or an intermediate station, all elements of the subsystem having means which independently organize the distribution of system resources between the home base station, the at least one intermediate station and the at least one mobile station.
• the function of self-organization is explained below.
• the means for self-organization consist of at least one algorithm for the independent division of the system resources between the home base stations, the at least one intermediate stations and the at least one mobile station, with each element of the subsystem independently allocates the system resources according to the same algorithm.
• the connection means of the home base station are / are a transceiver unit for wireless communication with a mobile radio network and / or a wired connection to a fixed telecommunication network.
• CDMA Code Division Multiple Access
• PIN personal identification number
• the means for differentiating between access-authorized and non-access-authorized mobile stations can advantageously also have a data memory which contains the PIN of access-authorized mobile stations.
• the FDD method Frequency Division Duplex
• TDD Time Division Duplex
• a further advantageous embodiment of the subsystem according to the invention is that the at least one intermediate station has means for performing a transfer and / or Takeover of the mobile station (handover) to / from the home base station and / or to / from another intermediate station.
• a mobile station can move freely within the coverage area of the subsystem, while the connection of the mobile station runs depending on the location via different connection paths and intermediate stations, or is switched between different intermediate stations and connection paths.
• the at least one intermediate station has means for executing a connection transfer and connection acceptance of the mobile station (handover) between the mobile radio network and the intermediate stations.
• a further improved mobility of the mobile stations is hereby achieved, since a smooth transition between an internal connection in the subsystem and the external connection into the mobile radio network is now possible without the user being disturbed by this process in his communication.
• the above object is also achieved by a method for communication in a subsystem of a mobile radio network and / or a wired communication network, the home system, at least one intermediate station and at least one in the subsystem consisting of several elements contain a mobile station, the home base station maintains a connection to a mobile radio network and possibly a fixed network and forwards this connection to the at least one mobile station with the aid of the at least one intermediate station and the at least one intermediate station automatically takes over the resource allocation.
• This independent allocation of resources represents a self-organization of the system, the function of which will be explained later.
• the logical connection establishment begins with the independent allocation of resources (establishment / dismantling of the data channels) between itself and the next connection element of the logical connection chain. If one or more intermediate stations are in the logical connection line, the respective intermediate station carries out the channel establishment to the next element, including independent resource allocation.
• an intermediate station serve several mobile stations simultaneously. This can be done, for example, by the intermediate station (s) working simultaneously on several frequencies, or one or more time slots being allocated to each mobile station in successive time frames.
• An advantageous way of dividing the existing system resources can be that the intermediate station is on a certain, predefined resource (frequency, code, time slot), for example on a BCCH (Broadcast Control Channel), or sends a list of the resources already occupied in a certain free time slot. In this way, a potentially connection-initiating mobile station knows which resources may not currently be used.
• a certain, predefined resource frequency, code, time slot
• BCCH Broadcast Control Channel
• connection setup incoming call
• subsystem outgoing call
• ARC Automatic Repeat on Request
• a further improvement and optimization, which comes into play especially in the case of high traffic volume, can consist in the fact that the intermediate station uses the BCCH to inform the mobile stations which resources are already occupied or which ones
• Resources may not be used. This avoids disruptions (e.g. the simultaneous attempt by two mobile stations to access the same resource).
• FIG. 1 subsystem according to the invention for a building complex
• Figure 2 Another variant of a subsystem with a different repeater distribution.
• Figure 1 shows schematically an inventive subsystem with its elements in a building complex with four building parts AD.
• a home base in part A of the building.
• tion 3 which is connected via an external transmit / receive antenna 4 to a cellular network 1.
• the mobile radio network can be, for example, a GSM, UMTS network or another mobile radio network.
• the base station is connected via a wire line 22 to a fixed network, for example the
• the home base station 3 has a transmitting / receiving antenna 5, with which it can establish a connection to the other mobile stations 17 and intermediate stations 7 and 8 located in the building part A.
• the intermediate station 8 has a transmitting / receiving antenna 12 and 13 located in the building part A and in the building part B. In the building part B there is also a transmitting / receiving antenna 14 of the intermediate station 9 from the building part D. The intermediate station 9 also has a transmitting / receiving antenna 15 for the building part D.
• the intermediate station 6 from the building part A has a fixed connecting line 16 which connects it to the intermediate station 7 from the building part C.
• the intermediate station 7 also has a transmitting / receiving antenna 11 for covering the building part C.
• the connection 22 between the intermediate station 6 and intermediate station 7 can also be an optical communication connection by means of LASER or infrared or else a microwave connection.
• EIB European Installation Bus
• one or more mobile station (s) can be located in each of the building parts, which are represented symbolically and provided with the reference number 17-20.
• the radio communication Bonds of the individual elements of the subsystem are symbolized by arrows 23-29.
• All stationary elements of the subsystem namely the intermediate stations 6-9, including the home base station 3, “know” of one another by being identified by a personal identification number (PIN). Likewise, the stationary elements recognize the Each mobile station is unique as to whether the mobile station is authorized to access the communication network of the subsystem. If an authorized mobile station leaves the coverage area of an intermediate station and moves to the coverage area of another intermediate station, a handover procedure is initiated from the first to the second intermediate station For example, the mobile station 19 can move from the building part B into the building part D, that is to say leave the coverage area of the intermediate station 8 and penetrate into the coverage area of the intermediate station 9.
• PIN personal identification number
• the transfer procedure is then initiated and d the connection between the mobile network 1 or fixed network 2 to the mobile station 19 is first processed via the home base station 3 to the intermediate station 8 and then via the home base station 3 via the intermediate station 8 and the intermediate station 9.
• the transfer procedure as with a new connection establishment, the
• a corresponding process takes place, for example, when the mobile station 17 moves from the building part A to the building part C.
• the home base station 3 recognizes that the mobile station 17 leaves its coverage area
• the intermediate station 7 recognizes that the mobile station now enters its coverage area and initiates a transfer procedure from the home base station 3 to the intermediate station 6 and intermediate station 7.
• the intermediate station 7 recognizes that it has left its area and the intermediate station 9 registers the entry of the mobile station 18 into its coverage area.
• the connection of the mobile station 18, which initially ran via the intermediate stations 7 and 6 to the home base station 3 is transferred to the intermediate station 9, which routes its connection to the home base station 3 via the intermediate station 8.
• the mobile stations can move freely within the building complex with its building parts A-B, with an optimal connection to the mobile radio network 1 and / or fixed network 2 being provided from each location. Also a
• intermediate stations can be set up on the individual floors.
• one or more intermediate stations can be installed for each building and one intermediate station can be used for the outdoor area, whereby the home base station can reach all intermediate stations via one or more intermediate stations and the existing system resources are divided independently.
• FIG. 2 A further variation of the subsystem according to the invention is shown in FIG. 2.
• the main difference from FIG. 1 is that the intermediate station 8 is not located in part A of the building, but is installed in part B of the building. Furthermore, part D of the building is free of intermediate stations.

Applications Claiming Priority (3)

Publications (1)

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ID=7882284

Family Applications (1)

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• 1998
  • 1998-09-25 DE DE19844099A patent/DE19844099A1/de not_active Withdrawn
• 1999
  • 1999-09-23 WO PCT/DE1999/003045 patent/WO2000019754A1/de not_active Application Discontinuation
  • 1999-09-23 KR KR1020017003841A patent/KR20010082213A/ko not_active Application Discontinuation
  • 1999-09-23 EP EP99955775A patent/EP1116403A1/de not_active Withdrawn
  • 1999-09-23 JP JP2000573115A patent/JP2002527004A/ja active Pending
  • 1999-09-23 AU AU12615/00A patent/AU1261500A/en not_active Abandoned
  • 1999-09-23 CN CNB998114154A patent/CN1146283C/zh not_active Expired - Fee Related

Non-Patent Citations (1)

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