JP2002527004A - Indoor subsystem in mobile radio networks - Google Patents

Abstract

(57) Abstract: The present invention provides a fixed home base station (3), at least one relay station (6; 7; 8; 9), and at least one mobile station (17; 18; 19; 20). The present invention relates to an indoor subsystem in a mobile radio network (1), and a communication method in the subsystem. In this case, all the components (3; 6; 7; 8; 9) of the subsystem comprise a home base station, at least one relay station (6; 7; 8; 9) and at least one mobile station (17; 18; 19; 20).

Description

DETAILED DESCRIPTION OF THE INVENTION

The present invention provides a fixed home base station, at least one relay station (repeater),
The present invention relates to an indoor subsystem in a mobile radio network including at least one mobile station. Further, the present invention relates to a communication method in a subsystem of a mobile wireless network and / or a wired communication network.

Such subsystems and similar methods are also known from the international patent application WO 94/19877. This application discloses a subsystem in a mobile radio network having one fixed base station, one relay station, and many mobile stations. In this case, the fixed base station forms a connection with an external telecommunications network and is connected to the mobile station via a transmitting / receiving antenna. Further, this specification discloses a communication method in a subsystem of a corresponding mobile wireless network and / or a wired communication network, and in this case, in a subsystem including a plurality of components, when a base station is a mobile wireless network or Some maintain a connection to a landline network and also forward a connection to at least one mobile station.

[0003] These known subsystems present the following problems. In other words, in a relatively large building with multiple floors or a complex building with multiple individual buildings and open areas, a single base station can be connected between the mobile station and the base station from all points in some cases. Not having the ability to cover so that you can build a secure connection.

[0004] A later published German patent application DE 198 20 760 A1 suggests a solution to the problem with such a sufficient covering capacity.
This specification discloses a broadband communication system including a plurality of wireless communication devices, which are connected to a telephone network via a relay station, where the relay station is connected to a power network. Communicate with each other via this.

[0005] A system of this kind has in any case the following disadvantages: That is, in order for the relay stations to be able to communicate with one another, they must be connected to a common power supply or power supply network. This is a major problem, especially in large complex buildings. This is because the connection paths can be interrupted for a very long time via existing current lines. It becomes even more difficult if the current connections of the individual buildings can only be made via public utility transformer stations. The current circuits of different buildings or one building are not in phase,
When connected in three phases, as in most cases, there is an additional problem in communication transmission.

[0006] Therefore, an object of the present invention is to provide a communication method in an indoor subsystem of a mobile radio network and / or a wired communication network and a communication method in a mobile radio network and / or a priority communication network subsystem. To provide sufficient coverage of total / received mobile stations even in complex buildings that include open air equipment.

[0007] The object is achieved by the features of claim 1 and the features of the first method claim.

According to the present invention, there is provided an indoor subsystem in a mobile radio network and / or a wired communication network including a fixed home base station, at least one relay station, and at least one mobile station, The home base station has at least one connection means to an external telecommunications network and at least one transmitting / receiving antenna for internal connection with at least one relay station, wherein said at least one relay station is At least one connection element for connection with a base station or a further relay station and at least one transmission / reception element for connection with at least one mobile station or a further relay station;
Has a receiving antenna, at least one mobile station has a transmitting / receiving antenna for communication with a mobile radio network and / or a relay station, wherein all components of the subsystem are Means for automatically organizing the division of system resources among the home base station, at least one relay station and at least one mobile station. The function of this automatic knitting will be described in further detail below.

Further, the following is suggested. In this specification, the term "indoor" is used in the context of subsystems to mean "indoor", which is commonly used by those skilled in the art, and is further distinguished from "public" systems. Used for

According to a particularly advantageous configuration example of the invention, the means for automatic organization comprises at least system resources of an intermediate connection existing between a home base station, at least one relay station and at least one mobile station. , Where each element of the subsystem automatically occupies system resources according to the same algorithm.

According to yet another advantageous configuration, one or more connecting means of the home base station is a transmitting / receiving unit for wireless communication with a mobile radio network and / or land telecommunications This is a wired connection path to the network.

[0012] Accordingly, according to another advantageous embodiment of the subsystem, in at least one connection line, the communication from the home base station to the mobile station can be carried out via at least one relay station or with one another. Has been transferred through the relay station.

The system resources to be divided among each other include different frequencies and / or different time slots and / or different CDMA codes (CDMA = Code
Division Multiple Access).

It is further important within the framework of the present invention that each mobile station (17; 18; 19; 20)
), Each relay station (6; 7; 8; 9) and the home base station (3) each have one P
IN (PIN = Personal Identification Number).
7; 8; 9) and / or the home base station (3) has means for distinguishing mobile stations to which access is permitted from mobile stations to which access is not permitted. Advantageously, said means for distinguishing between mobile stations to which access is granted and mobile stations to which access is not allowed comprises a data memory containing the PINs of mobile stations to which access is granted.

Regarding the connection of the subsystem to the mobile radio network and the connection to the mobile station, F
The connection is performed according to the DD system (FDD = Frequency Division Duplex), and the connection within the subsystem is performed according to the TDD system (TDD = Time Division Duplex).

According to yet another advantageous embodiment of the invention, at least one relay station comprises means for performing transfer and acceptance between the mobile station and the base station and / or between the mobile station and another relay station. Yes (handover). This allows the mobile station to move freely within the subsystem coverage. The connection of the mobile station, on the other hand, is established via different connection paths and relay stations, depending on the current location, or is switched between different relay stations and connection paths.

According to yet another configuration example of the subsystem, at least one relay station has means for performing connection transfer and connection acceptance (handover) of the mobile station between the mobile radio network and the relay station. I have. Thereby, the mobility of the mobile station is further improved. This is because the transition from the internal connection in the subsystem to the external connection of the mobile radio network can be performed without any trouble by the user without any trouble.

The subsystem is, for example, a GSM network (GSM = Global System for Mobile Commu
nications) and / or UMTS network (UMTS = Universal Mobile Telecommunicatio)
n System). Similarly, the subsystem includes an integrated services digital network (ISDN), a PSTN for land network connection.
Network (PSTN = Public Switched Telephone Network), Power supply network / Power line network, xDSL
/ ADSL network (xDSL = general generic term for Digital Subscriber Line, ADS
L = Asymmetric Digital Subscriber Line).

According to the present invention, the above-mentioned problem is further solved by the following communication method of a subsystem in a mobile wireless network and / or a wired communication network. That is, the subsystem comprises a plurality of elements including a home base station, at least one relay station, and at least one mobile station, wherein the base station serves a mobile radio network and possibly a land network. A connection is maintained, the connection is forwarded to at least one mobile station using at least one relay station, and the at least one relay station is resolved by a method of automatically dividing resources.

For possible resource division, frequency division to be used and / or time slot to be used and / or CDMA code (CDMA = Code Division Multiple A)
ccess).

Advantageously, in the manner described above, the element (mobile or base station) that exclusively initiates the logical connection automatically switches between itself and the next connecting element of the logical connection chain. Resource occupation (data channel setup / cleardown) starts. If one or more relay stations exist in the logical connection line, each relay station performs channel setup for the next element including automatic resource occupation.

According to yet another advantageous embodiment, the relay station operates a plurality of mobile stations simultaneously. This is possible, for example, by operating one or more relay stations simultaneously at multiple frequencies, or by assigning one or more time slots to each mobile station in successive time frames.

According to an advantageous means of dividing the existing system resources, the relay station can determine a predetermined resource (frequency, code, time slot), for example BCCH (
A list of already occupied resources is transmitted in a Broadcast Control Channel or in a predetermined free time slot. This allows the mobile station initiating the connection to know which resources should not be currently occupied.

The method described above may advantageously be implemented in a connection establishment (incoming call) initiated from, for example, a terrestrial communication network and / or a mobile radio network, or may be carried out in a subsystem initiated connection (outgoing call). ).

Also advantageously in accordance with the invention, a “handover” procedure may be performed within the subsystem between the various relay stations and / or between the relay station and the base station.

The above-mentioned concept of automatic organization with respect to resource partitioning is used in the sense of a search algorithm, which is implemented in the search algorithm of the respective base station, relay station and / or mobile station, and in each case the available algorithm. System resources, often frequencies,
Code, time slot index, and these are quality criteria (eg, RSS
I = Radio Signal Strength Indication = Received Field Strength Measurement, CRC Bit Check) is used to evaluate at what level a resource is faulty or occupied. Also, based on a periodically refreshed look-up table (related to frequency / code / time slot-index),
It is determined which resources are being used for data transmission.

Examples of the algorithm include the following. That is: 1. Periodic measurement of reception quality (RSSI or CRC “Cyclic Redundancy C
heck ”) and storage in an electronic table (lookup table) 2. Search operation for the“ best ”available transmission resource in the lookup table 3. Determination for occupation of predetermined resource If an error occurs, the corresponding ARQ
A new data packet may be transmitted by a method (ARC = Automatic Repeat on Request).

[0028] According to a better and optimal approach, the relay station informs the mobile stations via the BCCH which resources are already occupied or which resources are not occupied. This avoids errors such as two mobile stations trying to access the same resource at the same time.

[0029] Further advantageous embodiments and configurations of the invention are described in the dependent claims and in the following description.

The present invention is not limited to the features described above and the respective combinations described above, and other combinations are possible without departing from the scope of the present invention.

EXAMPLES The present invention will be described in detail in the following specification with reference to the drawings. In this case, FIG. 1 is a diagram showing the operation of a subsystem according to the present invention for a complex building, and FIG. 2 is a diagram showing a modification of the subsystem using another example of division of a relay station. is there.

FIG. 1 schematically shows a subsystem according to the invention in a complex building having four building sections AD, together with its components. In the division section A, the home base station 3 is connected to the mobile radio network 1 via the outer layer / receiving antenna 4. The mobile radio network may be, for example, a GSM network, a UMTS network or another communication network. Further, the base station can be connected via a wire line 22 to a land communication network, for example, an ISD.
N or PSTN network or other wired communication network. For internal communication, the base station 3 has a transmitting / receiving antenna 5, which connects to other mobile stations 17 and relay stations 7 and 8 in the building section A.

The relay station 8 has one transmitting / receiving antenna 12, 1 in each of the building sections A and B.
Three. In building section B, there is also a transmitting / receiving antenna 14 of relay station 9 from building section D. The relay station 9 additionally has a transmitting / receiving antenna 15 in the building section D.

The relay station 6 has a fixed connection line 16 from the building section A, which connects the relay station 6 to the relay station 7 in the building section C. Further, the relay station 7 has a building division C
And a transmitting / receiving antenna 11 that covers The connection line 22 between the relay station 6 and the relay station 7 may be an optical communication connection line, for example, a connection line using a laser, an infrared ray, a microwave, or the like. Similarly, this connection line is a wireless or wired indoor bus system (for example, EIB = European Installation Bus, EHS = E
It may extend via uropian Home Systemu, Batibus form BatiBUS Club International, or may be a wireless or wireless LAN (Local Area Network)
), A twisted pair cable, a four-wire connection line, a coaxial cable, a glass fiber cable, or the like.

In addition, each of these building sections has one or more mobile stations, respectively, which are designated by the reference numerals 17 to 20 and are respectively shown in a schematic diagram.
The wireless connection of the individual elements of the subsystem is indicated by arrows 23-29.

All the stationary elements of the subsystem, in particular the relay station 6 including the base station 3
-9 are mutually known and are characterized by a personal identification number (PIN). Similarly, these stationary elements can be identified as to whether the mobile station has legitimate access to the communication network of the subsystem based on a respective PIN unique to each mobile station. Handover from the first relay station to the second relay station if the mobile station having a legitimate access right leaves the coverage of one relay station and transitions to the coverage of another relay station A procedure (handover) is introduced. For example, the mobile station 19 can move from the building section B to the building section D. That is, it is possible to move away from the coverage of the relay station 8 and into the coverage of the relay station 9. Upon transition from building section B to building section D, a handover procedure is introduced, and the connection between mobile radio network 1 or terrestrial communication network 2 and mobile station 19 is first made via home base station 3 to relay station 8. And then transferred via the home base station 3, the relay station 8, and the relay station 9. Under this handover procedure, local and automatic control of the partitioning of system resources is also possible, as in the case of new connections. Implementation of such automatic knitting may be performed as described above.

The corresponding procedure is performed, for example, when the mobile station 17 moves from the building section A to the building section C. Here, the home base station 3 identifies that the mobile station 17 has left its coverage area. On the other hand, the relay station 7 identifies that the mobile station has entered its coverage area, and a handover procedure from the home base station 3 to the relay station 6 and the relay station 7 is triggered.

For example, when the mobile station 18 moves from the building section C to the building section D, the relay station 7
Identifies a deviation from its coverage, and relay station 9 sends mobile station 18 into its coverage area.
Record the entry of According to the handover procedure, the connection of the mobile station 18 is first made to the home base station 3 via the relay stations 7 and 6, and further transferred to the relay station 9. The relay station 9 is connected to the home base station 3 via the relay station 8.

In this way, free mobility of the mobile station in a complex building having building sections AB is achieved. In this case, an optimal connection from each location to the mobile radio network 1 and / or the land communication network 2 is formed. The mobile station can disconnect without interruption during its movement.

In the case of larger buildings, it is possible to arrange relay stations on individual floors. In the case of a relatively large complex building having a plurality of buildings and an open area, one or a plurality of relay stations are laid for each building, and one relay station is used for the open area. In this case, the home base station can be connected to all relay stations via one or a plurality of relay stations, and also performs automatic division of existing system resources.

Another variant embodiment of the subsystem according to the invention is shown in FIG. A substantial difference between this embodiment and the embodiment of FIG. 1 is that the relay station 8 is not present in the building section A, but is instead laid in the building B. Further, there is no relay station in building section D.

This kind of situation is considered in the following cases. That is, on the one hand, building classification A
And B are spatially separated, while a wireless connection 23 to the home base station 3 or possibly another wireless connection from another relay station is sufficient to reach the relay station 8. It is also conceivable that the building sections B and D are structurally sufficiently small or very close spatially. Similarly, the omission of the relay station in one building section (here, the relay station in section D) can be omitted when the building section is covered by another stationary relay station.

Even in the case of dividing a plurality of relay stations, the following is considered. That is, it is considered that a spatially sufficient radio coverage is achieved and a connection between the mobile terminal and the home base station can be established directly or indirectly from every possible location. In that case it does not matter how many relay stations are needed for the connection.

[Brief description of the drawings]

FIG. 1 shows a diagram of a subsystem according to the invention for a complex building.

FIG. 2 is a diagram showing a modified embodiment of a subsystem using another example of division of a relay station.

[Procedural Amendment] Submission of translation of Article 34 Amendment of the Patent Cooperation Treaty

[Submission date] October 13, 2000 (2000.10.13)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0005

[Correction method] Change

[Correction contents]

[0005] A system of this kind has in any case the following disadvantages: That is, in order for the relay stations to be able to communicate with one another, they must be connected to a common power supply or power supply network. This is a major problem, especially in large complex buildings. This is because the connection paths can be interrupted for a very long time via existing current lines. It becomes even more difficult if the current connections of the individual buildings can only be made via public utility transformer stations. The current circuits of different buildings or one building are not in phase,
When connected in three phases, as in most cases, there is an additional problem in communication transmission. International Patent Application WO 94/03993 discloses a private branch exchange to which a number of cordless base stations are connected. In this "cordless" switching device, a frequency scanner is used for frequency identification or selection.

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Erich Camperslehrer Germany Haminkeln am Königsbach 27 (72) Inventor Kurt Aretz Germany Isselburg Mer-Kisser Straße 36 (72) Inventor Theo Kroyl Borken Germany Mäkevan-Heiden-Strasse 9 (72) Inventor Marx Nachan Bochholt Garten Weg 27 Germany (72) Inventor Michael Franzen Germany Bochholt Elbesch-Turase 33 (72) Inventor Lutz Jällboat Germany Bocholt Im a Muzertal 45 F term (reference) 5K067 CC02 CC04 CC10 DD17 DD19 EE02 EE06 EE10 EE61 HH05 HH17 HH22 HH23 JJ11 KK03 5K072 AA29 BB13 CC13 CC15 CC20 CC21 DD11 DD16 DD17 GG01 GG11

Claims (28)

[Claims] 1. A fixed home base station (3) and at least one relay station (6).
7; 8; 9) and an indoor subsystem in a mobile radio network (1) and / or a wired communication network (2) comprising at least one mobile station (17; 18; 19; 20); The home base station (3) has at least one connection means (4; 22) to the external telecommunications network (1; 2) and at least one relay station (6; 7; 8;
9) having at least one transmit / receive antenna (5) for internal connection with said at least one relay station (6; 7; 8; 9), said home base station (3) or yet another At least one connection element (10; 11; 12; 13; 14; 15; 16) for connection with a relay station (6; 7; 8; 9) and at least one mobile station (17; 18; 19). 20) or at least one transmitting / receiving antenna (10; 11; 12; 13; 14;) for connection with a further relay station (6; 7; 8; 9).
15) wherein at least one mobile station (17; 18; 18; 20) is provided for communication with the mobile radio network (1) and / or the relay station (6; 7; 8; 9). In the type having a transmitting / receiving antenna, all the components (3; 6; 7; 8; 9) of the subsystem comprise a home base station and at least one relay station (6; 7; 8). 9) and at least one mobile station (17
18; 19; 20) indoor subsystems having means for automatically organizing the division of system resources among the subsystems. 2. The means for automatic organization comprises at least a home base station (
3) and at least one relay station (6; 7; 8; 9) and at least one mobile station (
17; 18; 18; 20), which consists of an algorithm for the automatic partitioning of the system resources of the intermediate connection existing in this case, in which case each element (3; 6; 7) of the subsystem
; 8; 9) automatically occupy system resources according to the same algorithm. 3. The one or more connection means of the home base station is a transmitting / receiving unit for wireless communication with a mobile radio network (1) and / or to a terrestrial telecommunications network (2). Subsystem according to claim 1 or 2, wherein the connection is a wired connection (22). 4. The relay station according to claim 1, wherein at least one connecting element of the relay station is a transmitting / receiving antenna and / or a cable connection. A subsystem according to any one of the preceding claims. 5. A method according to claim 1, wherein the communication from the home base station to the mobile station is via at least one relay station (6; 7; 8; 9) or at least one relay station (7) communicating with each other. 6; 7; 8; 9).
The subsystem according to any one of claims 1 to 4. 6. The subsystem according to claim 1, wherein the mutually divided system resources include at least different frequencies. 7. The subsystem according to claim 1, wherein the mutually divided system resources include at least different time slots. 8. The subsystem according to claim 1, wherein the system resources divided among each other include at least various CDMA codes (CDMA = Code Division Multiple Access). 9. Each of the mobile stations (17; 18; 19; 20) and each of the relay stations (6;
7; 8; 9) and the home base station (3) each have one PIN (PIN = Personal).
Identification Number), and relay stations (6; 7; 8; 9) and
Subsystem according to one of the preceding claims, wherein the home base station (3) comprises means for distinguishing between mobile stations to which access is permitted and mobile stations to which access is not permitted. 10. The mobile station according to claim 1, wherein said means for distinguishing mobile stations to which access is permitted from mobile stations to which access is not permitted comprises a data memory containing a PIN of a mobile station to which access is permitted. The subsystem according to claim 1. 11. Subsystem connection to the mobile radio network (1) is performed according to the FDD system (FDD = Frequency Division Duplex), and connection within the subsystem is performed according to the TDD system (TDD = Time Division Duplex). Subsystem according to any of the preceding claims, wherein 12. In the case of one relay station (6; 7; 8; 9), the relay station transfers and transfers between the mobile station (17; 18; 19; 20) and the home base station (3). A subsystem according to any of the preceding claims, comprising means for performing acceptance. 13. In the case of at least two relay stations (6; 7; 8; 9), these relay stations are connected to a mobile station (1) under a plurality of relay stations (6; 7; 8; 9).
13. The subsystem according to any one of claims 1 to 12, further comprising means for performing a connection transfer for (7; 18; 19; 20). 14. At least one relay station (6; 7; 8; 9) comprises a mobile station (17; 18; 18) between the mobile radio network (1) and the relay station (6; 7; 8; 9). ; 20)
14. The subsystem according to any one of claims 1 to 13, further comprising means for performing connection transfer and connection acceptance. 15. The GSM network (GSM = Global System for GSM)
15. Mobile communications).
Subsystem described in section. 16. The UMTS network (UMTS = Universal Mobil)
The subsystem according to any one of claims 1 to 15, which is associated with an e-telecommunication system. 17. The subsystem according to claim 1, wherein said subsystem is associated with an ISDN (Integrated Services Digital Network) with respect to a land network connection. 18. The system according to claim 1, wherein the subsystem is associated with a PSTN network (PSTN = Public Switched Telephone Network) with respect to a land network connection.
The subsystem according to any one of claims 1 to 17. 19. The subsystem according to claim 1, wherein the subsystem is associated with a power supply / power line network with respect to a terrestrial communication network connection. 20. The system as claimed in claim 1, wherein the subsystem comprises an xDSL /
ADSL network (xDSL = general generic term for Digital Subscriber Line, ADSL =
The subsystem according to any one of claims 1 to 17, wherein the subsystem is associated with an Asymmetric Digital Subscriber Line. 21. A communication method of a subsystem in a mobile radio network (1) and / or a wired communication network, wherein the subsystem includes a home base station and at least one relay station (6; 7; 8).
9) and a plurality of elements including at least one mobile station (17; 18; 18; 20), wherein said base station (3) communicates with a mobile radio network (1) and possibly land communication. Maintain a connection to the network (2), the connection being established by at least one relay station (
6; 7; 8; 9) and at least one mobile station (17; 18; 18; 20)
Wherein the at least one relay station (6; 7; 8; 9) automatically divides the resources. 22. The resource division may be performed by dividing a frequency to be used and / or a time slot to be used and / or a CDMA code (CDMA).
22. The method of claim 21, comprising splitting of iple Access). 23. An element (mobile station or base station) exclusively initiating a logical connection, automatically occupies resources between itself and the next connecting element of the logical connection chain (data channel setup / (Cleardown) is started, and when one or more relay stations (6; 7; 8; 9) exist in the logical connection line, each relay station (6; 7; 8; 9) is automatically turned on. The method according to claim 21 or 22, wherein channel setup is performed for the next element including resource occupation. 24. The relay station (6; 7; 8; 9) includes a plurality of mobile stations (17,
18, 19, 20) at the same time, 25. The relay station (6; 7; 8; 9) includes a BCCH (Broadcast
25. The method according to any one of claims 21 to 24, wherein a list of already used resources that should not be currently occupied by the mobile station initiating the connection is transmitted on the Control Channel. 26. The method according to claim 21, wherein a connection is initiated (terminated call) initiated from a land-based communication network and / or a mobile radio network (1). 27. The method according to claim 21, wherein a connection initiation initiated from the subsystem is performed (outgoing call). 28. Within the subsystem, various relay stations (6; 7; 8; 9)
28) and / or a connection transfer procedure is performed between the relay station (6; 7; 8; 9) and the base station (3).