KR20010082213A - In-house subsystem in a mobile radio telephone network - Google Patents

Abstract

The present invention provides a mobile radiotelephone network comprising a fixed one home-base station (3), at least one intermediate station (6; 7; 8; 9) and at least one mobile station (17; 18; 19; 20). Of the premises subsystem. The invention also provides that all elements (3; 6; 7; 8; 9) of the subsystem include a home base station, at least one intermediate station (6; 7; 8; 9) and at least one mobile station (17; 18); And means for independently organizing the distribution of system resources between 19 and 20).

Description

On-premises subsystem of mobile wireless telephone network {IN-HOUSE SUBSYSTEM IN A MOBILE RADIO TELEPHONE NETWORK}

Similar subsystems and similar methods are known from WO 94/19877. The application proposes a subsystem of a mobile radiotelephone network comprising one fixed base station, one intermediate station and a plurality of mobile stations. The fixed base station is connected to an external communication network and to a mobile station via a transmit / receive antenna. The publication also discloses a method for communicating in a subsystem of a mobile wireless telephone network or a wired communication network. In a subsystem of multiple elements, the base station maintains a connection to the mobile radiotelephone network and optionally a fixed network and forwards the connection to at least one mobile station.

In such a known subsystem, only one base station may not cover a large building with multiple floors or a complex building with many individual buildings and spaces in some cases, so that there is good communication between the mobile station and the base station in all places. There is a problem that a connection cannot be made.

Republished patent application DE 198 20 760 A1 discloses a method for solving the problem of sufficient cover. This publication presents a broadband communication system with a plurality of wireless communication devices, which are connected to a telephone network through an intermediate station. The intermediate stations are connected to a current supply network and communicate with each other through them.

However, this type of system has the disadvantage that each intermediate station must be connected to one common current supply network in order to communicate with each other. Thus, problems arise, especially in large complex buildings, because the connection paths through existing current lines are too long. This becomes even more difficult if the current connections in individual buildings are made only through the transformer stations of public utility companies. If the circuits of different buildings or of one building are not connected to the same, usually three phases, additional problems arise in communication transmission.

The present invention relates to an on-premises subsystem of a mobile radiotelephone network consisting of a fixed home base station, at least one intermediate station (repeater) and at least one mobile station. The invention also relates to a method for communicating in a subsystem of a mobile wireless telephone network and / or a wired communication network.

1 is a sub-system for a composite building according to the present invention,

2 shows another embodiment of a subsystem with different repeater splits.

An object of the present invention is a sub-system of a mobile radiotelephone network and / or a wired communication network, which provides a satisfactory transmission / reception cover of a mobile station in a large building and a complex building including a public space, and a mobile radiotelephone network. And / or a method for communicating in a subsystem of a wired communication network.

This object is achieved by the features of claim 1 and by the features of the first method claim.

According to the invention, it comprises a fixed home base station, at least one intermediate station (repeater) and at least one mobile station, said fixed home base station comprising at least one connecting means and at least one intermediate station for an external communication network; At least one transmit / receive antenna for internal connection of the at least one intermediate station, at least one connecting element for connecting to a home base station or other intermediate station, and at least one mobile station or other intermediate station. At least one transmit / receive antenna for communication, wherein the at least one mobile station includes a transmit / receive antenna for communicating with a mobile wireless telephone network or an intermediate station, wherein all elements of the subsystem are a home base station, at least one intermediate station And splitting system resources among at least one mobile station independently. The on-site subsystem, including means for directly or mobile radio telephone networks and / or wired communication network is provided. The function of self tissue is described in detail below.

In this application, the term "in-house" is used in the sense of the term "residential", which is generally used in the art with respect to subsystems, and is distinguished from the "public" system. do.

According to a particular embodiment of the subsystem according to the invention the means for self-organization consists of an algorithm for independently dividing system resources in an intermediate connection existing between at least a home base station, at least one intermediate station and at least one mobile station. . Each element of the subsystem divides system resources independently according to the same algorithm.

In another preferred embodiment, the connecting means (s) of the home base station is a wired connection to a transmit / receive unit and / or a fixed communication network for wireless communication with a mobile radiotelephone network.

According to another preferred embodiment of the subsystem the communication from the home base station to the mobile station in at least one connection line is via at least one intermediate station or a plurality of intermediate stations communicating with each other.

System resources to be divided from one another are, for example, different frequencies and / or different time slots and / or different CDMA codes (CDMA = Code Division Multiple Access).

In addition, within the scope of the present invention, each mobile station, each repeater and home base station must each have one PIN (PIN = personal identification number), and the intermediate station and / or home base station has access rights and no access rights. Has means for distinguishing mobile stations. Preferably the means for distinguishing between mobile stations with and without access rights has a data memory containing the PIN of the mobile station with access rights.

With regard to the connection of the subsystem to the mobile radiotelephone network and the mobile station (s), the FDD-method (FDD = Frequency Division Duplex) is used for the mobile radiotelephone network, and the TDD-method (TDD = Time Division Duplex) inside the subsystem. Is preferably used.

In another preferred system of the subsystem according to the invention at least one intermediate station has means (handover) for transmitting and / or transferring the mobile station to and from the home base station and to / from another intermediate station. Thus, the mobile station can be freely moved within the coverage range of the subsystem, while the connection of the mobile station is made through different connection paths and intermediate stations depending on the location or switched between different intermediate stations and connection paths.

In another embodiment of the subsystem, the at least one intermediate station has (handover) means for performing connection transfer and connection transfer of the mobile station between the mobile radiotelephone network and the intermediate station. This allows for seamless transmission between the internal connections of the subsystem to the external connections of the mobile radiotelephone network, without the user being interrupted by the above procedure, thereby giving a better mobility of the mobile station.

The above-described subsystems can be assigned to, for example, GSM-network (GSM = Global System for Mobile Communications) and / or UMTS-network (UMTS = Universal Mobile Telecommunication System). Similarly, the subsystems may be associated with ISDN networks (ISDN = Integrated Service Digital Network), PSTN networks (PSTN = Public Switched Telephone Network), current supply networks / power line networks and / or xDSL / ADSL networks (xDSL = general higher concept for Digital Subscriber Line, ADSL = Asymmertric Digital Subscriber Line).

The above object with regard to the method is, according to the invention, in a subsystem consisting of a plurality of elements comprising one home base station, at least one intermediate station and at least one mobile station, a home base station is a mobile wireless telephone network and optionally a fixed network. A sub-mode of a mobile radiotelephone network and / or a wireline communication network, maintaining a connection to and forwarding the connection by the at least one intermediate station to the at least one mobile station, wherein the at least one intermediate station performs resource splitting on its own. Achieved by a method for communicating in a system. The unique resource partition represents the self organization of the system. The function of self tissue is described below.

Possible resource divisions include at least the frequency used and / or the time slot used and / or the division of the CDMA code (CDMA = Code Division Multiple Access).

Preferably only the element (mobile station or base station) that initiates a logical connection in the above method initiates an independent allocation of resources (formation / decomposition of data channels) between itself and the next connection element of the logical connection chain. If one or more intermediate stations are placed on a logical connection line, each intermediate station performs channel formation and independent resource partitioning for the next element.

In another embodiment of the method according to the invention, one intermediate station controls several mobile stations simultaneously. This can be done, for example, by the intermediate station (s) being operated simultaneously at multiple frequencies or by assigning one or multiple time slots in successive time frames to each mobile station.

A preferred method of partitioning system resources is that the intermediate station transmits a list of resources already allocated in a constant, predefined resource (frequency, code, time slot), such as in a Broadcast Control Channel (BCCH), or in a constant free time slot. It is. Because of this, it is known to the mobile station which potentially initiates the connection, which resource should not be split then.

The method may be performed for an incoming call initiated from a fixed network and / or a mobile wireless telephone network and / or an outgoing call initiated by the system.

According to the present invention, the above-described method can be used inside the subsystem in a "hand over" procedure between different intermediate stations and / or between intermediate stations and base stations.

The foregoing concept of self organization regarding resource allocation represents a search algorithm executed by a base station, an intermediate station and / or a mobile station. Each of the search algorithms is based on the quality criteria (e.g., RSSI = Radio Signal Strength Indication = Empfangsfeldstaerkemessung, Pruefung der CRC-Bits), respectively, based on quality criteria. Evaluate whether it is interrupted or partitioned, and determine which resources are used for data transfer by look-up tables (for frequency, code, and time slot indexes) that are refreshed periodically.

Exemplary algorithms appear as follows:

1. Receive periodic query (RSSI or CRC = by Cyclic Redundancy Check) and store in electronic table (look-up table).

2. Search for the "best" free transport resource in the look-up table.

3. Determine the partitioning of specific resources.

If an error occurs in the reception of the data packet, retransmission of the data packet can be made by an ARQ method (ARQ = Automatic Repeat on Request).

An additional improvement and optimization, which is particularly effective when the call volume is high, is that the intermediate station informs the mobile station via BCCH which resources are already allocated or which resources cannot be allocated. This avoids interference (eg, two mobile stations attempting to access the same resource at the same time).

Further embodiments, additional features and advantages of the invention are set forth in the following description of the embodiments and the dependent claims with reference to the accompanying drawings.

The features of the invention described above and below can be used not only in the combinations presented respectively but also in other combinations or alone, without departing from the scope of the invention.

Hereinafter, with reference to the accompanying drawings of the present invention will be described in detail.

1 schematically shows a subsystem according to the invention comprising the element in a four-part composite building. Within the building part A is a home-base station 3 which is connected to the mobile radiotelephone network 1 via an external transmit / receive antenna 4. As mobile radiotelephone networks, for example, GSM-, UMTS-networks or other mobile radiotelephone networks are handled. The base station is also connected via a wire line 22 to a fixed network 2, for example an ISDN-, PSTN-network or other wired communication network. The home-base station 3 is equipped with a transmit / receive antenna 5 for internal communication, by which the home-base station is located in the building part A and other mobile stations 17 and intermediate stations 7 and 8).

The intermediate station 8 includes one transmit / receive antenna 12 and 13 in the building part A and the building part B, respectively. Within the building part B there is also a transmit / receive antenna 14 coming from the intermediate station 9 of the building part D. The intermediate station 9 further comprises a transmit / receive antenna for the building part D.

A fixed connection line 16 is drawn from the intermediate station 6 of the building part A, which connects the intermediate station 7 and the intermediate station 6 of the building part C. The intermediate station 7 is also provided with a transmit / receive antenna 11 for covering the building part C. As the connecting portion 22 between the intermediate station 6 and the intermediate station 7, an optical communication connection method or a microwave connection method using laser or infrared light may also be used. Similarly, the connection is via a wireless or wired campus bus system (e.g. EIB = European Installation Bus, EHS = European Home Systems, Batibus von BatiBUS Club International), or a wireless link system, wireless local area network (LAN), twisted pair It can also be made via wire connection, coaxial cable, fiberglass cable, or the like.

There may also be at least one mobile station in every building part, which is shown symbolically and indicated by reference numerals 17-20. Wireless connection of individual elements of the subsystem is indicated by arrows 23-29.

All stationary elements of the subsystem, i.e. intermediate stations 6-9, including the home-base station 3, "know" each other by means of which the intermediate stations are indicated by a personal identification number (PIN). Similarly, the fixed element refers to an individual PIN unique to each mobile station, acknowledging whether the mobile station has access to the communication network of the subsystem. When the mobile station with access leaves the cover area of one intermediate station and moves to the cover area of the other intermediate station, a transition procedure (handover procedure) from the first intermediate station to the second intermediate station is introduced. For example, the mobile station 19 can be moved from the building part B to the building part D. That is, it leaves the cover area of the intermediate station 8 and enters the cover area of the intermediate station 9. The transfer procedure begins when the building part (B) is passed from the building part (D), and the connection between the mobile radiotelephone network 1 and the fixed network 2, which connects to the mobile station 19, first establishes the home-base station 3. E) through the home-base station (3), the intermediate station (8) and the intermediate station (9). In the above transmission procedure, as in the new connection structure, the partitioning of system resources is adjusted locally and independently. The realization of such an organization is described above.

When the mobile station 17 is moved from the building part A to the building part C, for example, a corresponding process takes place. In this case, the home-base station 3 recognizes that the mobile station 17 leaves its cover area, while the intermediate station 7 enters its cover area and the intermediate station from the home-base station 3. It is recognized that it causes a transmission procedure to the station 6 and the intermediate station 7.

For example, if mobile station 18 is moved from building part C to building part D, intermediate station 7 recognizes that the mobile station is leaving its area, and intermediate station 9 is assigned to mobile station 18. ) Enters its own cover area. By this transmission procedure, the connection of the mobile station 18, which first proceeds to the home-base station 3 via the intermediate stations 7 and 6, is switched to the intermediate station 9, and the home-base station of the intermediate station ( The connection to 3) takes place via the intermediate station 8.

In this way, the free movement of the mobile station within the complex building with the building part AB is possible, in which case the best connection to the mobile radiotelephone network 1 and / or the fixed network 2 is at all places. Is done. The movement of the mobile station during the existing connection is also possible without interruption.

If the building is relatively large, intermediate stations can be installed on individual floors. In the case where the size of a complex building including a large number of buildings and notices is relatively large, for example, at least one intermediate station may be installed in each building, and one intermediate station may be used for open ground. The home-base station can reach all of the intermediate stations through at least one intermediate station, and a separate partition of the available system resources is achieved.

A further variant of the subsystem according to the invention is shown in FIG. 2. An important difference from FIG. 1 is that the intermediate station 8 is not inside the building part A, but rather is installed in the building part B. FIG. The building part D is also free from the intermediate station.

Such a condition is that, on the one hand, the spatial separation between the building parts (A) and (B) and on the other hand the spatial separation between the building parts (B) and (D) are structurally weak enough, And spatially, it is conceivable if the radio connection 23 between the home-base station 3 or another radio connection of another intermediate station appears as close enough to reach the intermediate station 8 as necessary. When one building part is simultaneously covered by an intermediate station fixed to another, the intermediate station may not exist in the building part as in the case of the building part D.

Thus, in the splitting of the intermediate station, it is important that in practice sufficient wireless covering of the building parts can be achieved and a direct or indirect connection can be made between the mobile terminal and the home-base station wherever possible. In this case it does not matter how many intermediate stations are needed for the connection.

Claims (28)

One fixed home-base station (3), at least one intermediate station (6; 7; 8; 9) and at least one mobile station (17; 18; 19; 20), the fixed home-base station ( 3) at least one connection means (4; 22) for connecting to an external telecommunication network (1; 2) and at least one for internal connection with at least one intermediate station (6; 7; 8; 9) A transmit / receive antenna (5) comprising at least one intermediate station (6; 7; 8; 9) connected to a home-base station (3) or to an additional intermediate station (6; 7; 8; 9) At least one connecting element (10; 11; 12; 13; 14; 15; 16) and at least one mobile station (17; 18; 19; 20) and / or further intermediate stations (6; 7; 8; 9) And at least one transmit / receive antenna (10; 11; 12; 13; 14; 15) for connection with the at least one mobile station (17; 18; 19; 20). And / or one transmit / receive antenna for communicating with intermediate stations (6; 7; 8; 9) In the on-site subsystem configured in the mobile radio telephone network (1) within and / or fixed-line network (2) to include, All elements 3; 6; 7; 8; 9 are between a home-base station, at least one intermediate station 6; 7; 8; 9 and at least one mobile station 17; 18; 19; 20. An on-premises subsystem, comprising means for independently organizing partitioning of system resources. The method of claim 1, The means for self-organization is an intermediate connection existing between a home-base station 3, at least one intermediate station 6; 7; 8; 9 and at least one mobile station 17; 18; 19; 20. And at least one algorithm for partitioning resources independently, wherein each element (3; 6; 7; 8; 9) divides the system resources independently according to the same algorithm. The method according to claim 1 or 2, Sub-system characterized in that the connecting means of the home-base station is one transmitting / receiving unit for wireless communication with the mobile radiotelephone network 1 and / or a wired connection 22 to the fixed telecommunication network 2. . The method according to any one of claims 1 to 3, At least one connection element of said intermediate station (6; 7; 8; 9) is a transmit / receive antenna (4) and / or a cable connection (16). The method according to any one of claims 1 to 4, If there is only one connection line, communication from the home-base station to the mobile station may be via at least one intermediate station (6; 7; 8; 9) or a plurality of intermediate stations (6; 7; 8; 9) communicating with each other. Sub system, characterized in that made through. The method according to any one of claims 1 to 5, And wherein the system resources partitioned side by side have at least different frequencies. The method according to any one of claims 1 to 6, And wherein the system resources partitioned side by side have at least different time slots. The method according to any one of claims 1 to 7, And wherein the system resources partitioned side by side have at least different CDMA-codes. The method according to any one of claims 1 to 8, Each mobile station 17; 18; 19; 20, each intermediate station 6; 7; 8; 9, and home-base station 3 are provided with one PIN, respectively, and the intermediate station 6; 7; 8 And 9) and / or a means for distinguishing between a mobile station having access to a home-base station (3) and a mobile station without access. The method of claim 9, Means for distinguishing between mobile stations with access rights and mobile stations without access rights are provided with a data memory having a PIN of the mobile station with access rights. The method according to any one of claims 1 to 10, The subsystem is characterized in that the connection of the subsystem to the mobile radiotelephone network (1) proceeds according to the FDD-method, and the connection within the subsystem proceeds according to the TDD-method. The method according to any one of claims 1 to 11, Means for carrying out the transfer and / or transfer of mobile stations 17; 18; 19; 20 to / from home-base station 3 when there is one intermediate station 6; 7; 8; 9 Subsystem provided to said intermediate station. The method according to any one of claims 1 to 12, If there are two or more intermediate stations 6; 7; 8; 9, executing the connection transmission process of the mobile stations 17; 18; 19; 20 under the intermediate stations 6; 7; 8; 9; Means for said intermediate station being provided. The method according to any one of claims 1 to 13, Means for carrying out the connection transmission process and the connection transfer process of the mobile stations 17; 18; 19; 20 between the mobile radiotelephone network 1 and the intermediate stations 6; 7; 8; 9 are at least one intermediate station. Subsystem provided in (6; 7; 8; 9). The method according to any one of claims 1 to 14, Subsystem, characterized in that assigned to the GSM-network. The method according to any one of claims 1 to 15, Subsystem, characterized in that assigned to the UMTS-network. The method according to any one of claims 1 to 16, Subsystem characterized in that the system associated with the fixed network connection is assigned to the ISDN-network. The method according to any one of claims 1 to 17, Subsystem characterized in that the system associated with the fixed network connection is assigned to the PSTN-network. The method according to any one of claims 1 to 18, A system associated with a fixed network connection is assigned to a current supply network / powerline network. The method according to any one of claims 1 to 19, Subsystem characterized in that the system associated with the fixed network connection is assigned to the xDSL / ADSL-network. One home-base station, at least one intermediate station (6; 7; 8; 9) and at least one mobile station (17; 18; 19; 20), the home-base station (3) being a mobile wireless telephone network (1) and optionally a connection to the fixed network (2), which connection is carried out by at least one intermediate station (6; 7; 8; 9) at least one mobile station (17; 18; 19); 20. A method of communication in a subsystem of a mobile radiotelephone network 1 and / or a wired communication network, configured to be delivered to At least one intermediate station (6; 7; 8; 9) performs resource partitioning on its own. The method of claim 21, A partition of the used frequency and / or the used time slot and / or the CDMA-code belongs to a resource partition. The method of claim 21 or 22, Only the element (mobile station or base station) that initiates the logical connection configuration starts its own covering of the resource (configuration / decomposition of the data channel) between itself and the next connection element of the logical link, and at least one within the logical connection line. If intermediate stations (6; 7; 8; 9) are arranged, the individual intermediate stations (6; 7; 8; 9) perform channel configuration up to the next element, including its own resource division. . The method according to any one of claims 21 to 23, Characterized in that one intermediate station (6; 7; 8; 9) simultaneously controls a plurality of mobile stations (17; 18; 19; 20). The method according to any one of claims 21 to 24, The intermediate station (6; 7; 8; 9) on the BCCH sends out a list of already partitioned resources that should not be partitioned by the mobile station initiating the connection. The method according to any one of claims 21 to 25, Characterized in that it is carried out for the connection configuration initiated by the fixed network and / or the mobile wireless telephone network (1). 27. The method of any of claims 21 to 26, Running for a connection configuration initiated by the subsystem. The method according to any one of claims 21 to 27, Characterized in that it runs between various intermediate stations 6; 7; 8; 9 and / or between one intermediate station 6; 7; 8; 9 and the base station 3 during the connection transmission-procedure inside the subsystem. How to.