CN1146283C - In-house subsystem in mobile radio telephone network - Google Patents
In-house subsystem in mobile radio telephone network Download PDFInfo
- Publication number
- CN1146283C CN1146283C CNB998114154A CN99811415A CN1146283C CN 1146283 C CN1146283 C CN 1146283C CN B998114154 A CNB998114154 A CN B998114154A CN 99811415 A CN99811415 A CN 99811415A CN 1146283 C CN1146283 C CN 1146283C
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- China
- Prior art keywords
- subsystem
- mobile radio
- station
- relay station
- relay
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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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
Abstract
The invention relates to an in-house subsystem in a mobile radio telephone network (1) comprising a stationary home base station (3), at least one intermediate station (6; 7; 8; 9) and at least one mobile station (17; 18; 19; 20). The invention also relates to a method for communicating in this subsystem, whereby all elements (3; 6; 7; 8; 9) of the subsystem comprise means. Said means independently organize the distribution of system resources between the home base station, the at least one intermediate station (6; 7; 8; 9) and the at least one mobile station (17; 18; 19; 20).
Description
Technical field
The present invention relates to the house subsystem in a mobile wireless network, comprise home base station, at least one relay station (relay station) and at least one mobile radio station of a fixed-site.The present invention relates to the communication means in the subsystem of a mobile wireless network and/or a wireline communication network in addition.
Background technology
A similar subsystem and a similar approach are disclosed in International Patent Application WO 94/19877.In this application, pointed out a subsystem in a mobile wireless network, it has the base station of a fixed-site, a relay station and a plurality of mobile radio station, wherein the base station of fixed-site is connected with the communication network of an outside, and is connected with a mobile radio station by a transmit/receive antenna.Method for communicating in a subsystem mobile wireless network or a wireline communication network is correspondingly disclosed from this article, wherein this comprises in the subsystem of a plurality of assemblies base station maintain to a wireless network and being connected of a fixed network perhaps, and transmits this and be connected at least one mobile radio station.
In this known subsystem, demonstrate this problem, unique base station can not so cover the building that perhaps has a plurality of floors or have the groups of building in a plurality of independent buildings and vacant lot in this position, promptly can set up a good connection from a plurality of positions between mobile radio station and base station.
Indicate declarer's additional patent application DE 198 20 760 A1 that deliver in addition, it has solved the problem of abundant covering.Pointed out a wide-band communication system with a plurality of untethered communications device in this piece article, these untethered communications device are connected with telephone network through relay station, and wherein relay station hangs on the power net and through this power net and communicates with one another.
One so system comprise such shortcoming, each relay station must be connected on the public power net, so that can communicate with one another.Particularly such problem may appear here, because may interrupt the connecting path through current circuit very for a long time under the situation of big groups of building.If in the transformer station of public power enterprise, only exist the electric current of single building to connect, then additional this connecting path that hinders significantly.If circuit different buildings or a building is not connected identical, maximum three possible going up mutually, then when communications, produce accessory problem.
From WO 94/03993, disclose an extension facility, in this equipment, connected a plurality of assisted cordless base stations, wherein in this " wireless " extension facility, discerned or the selection frequency with fescan.
Summary of the invention
Therefore task of the present invention is, illustrate one in mobile radio network and/or wired communication system house subsystem and in the subsystem of a mobile radio network and/or a wired communication system method for communicating.This subsystem provides the gratifying emission/reception of mobile radio station to cover in bigger building that comprises attached outdoor equipment and groups of building.
Therefore the house subsystem of inventor's suggestion in a mobile radio network and/or wired communication network, the home base station that comprises a fixed-site, at least one relay station and at least one mobile radio station, wherein the home base station of fixed-site has at least one transmit/receive antenna that the linkage unit to external communication network is used for at least one and at least one relay station inside is connected, at least one relay station is arranged at least one and is used for and home base station or the coupling assembling that is connected with an other relay station, and arrange at least one be used for or with at least one mobile radio station or the transmit/receive antenna that is connected with an other relay station, and at least one mobile radio station has one to be used for and mobile radio network and/or the transmit/receive antenna that relay station is communicated by letter, it is characterized in that, the all component of subsystem has the unit of formation like this, and promptly it is used for independently being arranged in home base station, system resource allocation between at least one relay station and at least one mobile radio station.Further set forth in addition from the function of arranging.
According to of the present invention in a subsystem of mobile radio network and/or wire net method for communicating, wherein in subsystem, it comprises a plurality of assemblies, these assemblies comprise home base station, at least one relay station and at least one mobile radio station, wherein home base station is maintained to a mobile radio network and being connected of a fixed network perhaps, and this connection is passed at least one mobile radio station by means of at least one relay station, it is characterized in that at least one relay station is independently born resource allocation.
Indicate, in this article, on the meaning of the notion of generally using in the professional domain " dwelling house ", use and the related notion of subsystem " indoor ", and be used for distinguishing " public " system at this.
According to a special expansion suggestion according to subsystem of the present invention, be used for comprising at least that from the unit of arranging one is used for to the algorithm that connects the independent distribution system resource between home base station, at least one relay station and at least one mobile radio station in the middle of existing, wherein each assembly of subsystem independently takies these system resources according to identical algorithm.
Predesignate an other useful expansion, these of home base station or this linkage unit be one be used for a mobile radio network wireless communication and/or be wired at fixed communication online transmit and receive the unit.
According to an other useful expansion of subsystem, under the situation of at least one connecting line, pass through at least one relay station or a plurality of relay stations that communicate with one another of process from the communication of home base station to a mobile radio station.
For example different frequencies and/or different time slots and/or dissimilar CDMA code (CDMA=code division multiple access) can be regarded different distributed system resources as.
In addition within the scope of the present invention, each PIN (the peculiar identification code of PIN=) of each mobile radio station, each relay station and home base station domination and relay station and/or one of home base station domination are used to distinguish the visit approval and visit does not approve that the unit of mobile radio station is essential.Be used to distinguish visit approval and visit and do not approve that the unit of mobile radio station also can arrange a data memory valuably, it comprises the PIN of the mobile radio station of visit approval.
About subsystem to mobile radio network with to being connected of mobile radio station, FDD (FDD=Frequency Division Duplexing (FDD)) method can be used for mobile radio network and valuably in the inner use of subsystem TDD method (TDD=time division duplex).
An other useful expansion according to subsystem of the present invention is, at least one relay station props up and is used in execution and mobile radio station transferred to home base station and/or transfer an other relay station to and/or from home base station and/or take over the unit of mobile radio station (transfer) from an other relay station.Therefore mobile radio station can move at the coverage internal freedom of subsystem, and the connection opsition dependent of mobile radio station is mainly changed between different relay stations and connecting path through different connecting paths and relay station.
One of subsystem other, expansion widely is, at least one relay station props up and is used in the connection of carrying out mobile radio station between mobile radio network and relay station and transfers and the unit that is connected adapter (transfer).Therefore realize a mobility of improving in addition of mobile radio station, because a transformation that outside in mobile radio network can no problem between connecting that is connected internally at subsystem, otherwise the user of this process is disturbed in its communication.
Subsystem described above for example can be distributed to GSM network (GSM=global system for mobile communications) and/or UMTS network (UMTS=universal mobile telecommunications system).Connect this subsystem about fixed network equally and can distribute to isdn network (ISDN=integrated services digital network), PSTN network (PSTN=public switch telephone network), power net/power-line network and/or xDSL/ADSL network (xDSL=is used for all upperseat concepts of Digital Subscriber Line, the nonsynchronous Digital Subscriber Line of ADSL=).
According to the present invention also by a task that method for communicating has proposed above solving in the subsystem of a mobile radio network and/or a wire net, wherein in this comprises the subsystem of a plurality of assemblies, these assemblies comprise a home base station, at least one relay station and at least one mobile radio station, home base station is maintained to being connected of a mobile radio station and a possible fixed network, and by means of at least one relay station this connection is delivered at least one mobile radio station, and at least one relay station is independently born resource allocation.This independently resource allocation show the arrangement certainly of system, after this also to set forth this from the function of arranging.
For possible resource allocation, the frequency of Shi Yonging and/or that utilize at least distribution time slot and/or CDMA code (CDMA=code division multiple access) is effective.
In indicated method, only the assembly (mobile radio station or base station) of this start-up logic connection foundation sets about independently taking the resource (setting up/cancel data channel) between the nearest coupling assembling of own and logic connection chain.If one or more relay stations are in the logic connecting line, then relay station comprises that independently the channel to nearest assembly of resource occupation is set up separately.
According to one of this method other expansion suggestion, a relay station is served a plurality of mobile radio stations simultaneously.This for example can realize like this that promptly relay station works on a plurality of frequencies simultaneously or is distributed in the interior one or more time slots of continuous time frame for each mobile radio station.
A useful possibility of dividing current system resource is, relay station is gone up, for example gone up or send a table of occupied resource at a BCCH (Broadcast Control Channel) in a definite empty slot definite, a predefined resource (frequency, code, time slot).In this way, the known potential mobile radio station connection starting, that do not allow to take at present resource.
For example for setting up (calling of access) from the connection of fixed network and/or mobile network startup and/or setting up (calling of exhalation) for a connection that starts by subsystem and can implement above-described method valuably.
, be between the different relay stations and/or be in the possibility that equally also has the method for describing in detail above using under the situation of " transfer " process between a relay station and the base station valuably in subsystem inside according to the present invention.
About resource allocation, notion from arrangement above-mentioned shows a searching algorithm, this algorithm is carried out by base station, relay station and/or mobile radio station respectively, and according to quality standard (for example RSSI=wireless signal strength indication=received field strength measure, CRC bit trial) estimate each empty system resource-comprise at most frequency marker, code signing, time slot mark-, disturb or take resource with this standard, and the question blank (about frequency indices, code index, time slot index) according to periodic refresh is distinguished, and that resource is used for transfer of data.
The algorithm of a demonstration can have following feature:
1. period measurement of the quality of reception (according to RSSI or CRC=cyclic redundancy check (CRC)) and storage in an electrical form (question blank).
2. in question blank, retrieve the empty transfer resource of " best ".
3. judge taking of a definite resource.
If at this moment received a packet wrongly.Then can realize the transmission again of packet by a corresponding APQ method (ARC=repeats automatically by request).
An improvement and an optimization other, that particularly work under the situation that higher communication produces are that relay station is informed mobile radio station through BCCH, and occupied or those resources of those resources do not allow occupied.Therefore avoid interference (for example two mobile radio stations are attempted obtaining same from the source simultaneously).
From about the following describes of the preferred embodiment of figure and provide other expansion of the present invention, supplementary features and advantage in the dependent claims.
Self-evident, above-mentioned not only can be used in the inference of respectively pointing out with the following feature of the present invention that also must set forth, and is used in other inference or is used in all viewpoints, otherwise departs from the scope of the present invention.
Description of drawings
Elaborate the present invention according to figure below.
Fig. 1: be suitable for groups of building according to subsystem of the present invention,
Fig. 2: other variant with subsystem of other relay station distribution.
Embodiment
Fig. 1 summarizes pointed out to have its assembly in groups of building that have four building part A-D one according to subsystem of the present invention.A home base station 3 is among the building part A, and its transmit receive antenna 4 through an outside is connected with a mobile wireless network 1.In this mobile wireless network, for example may relate to other mobile radio network of a GSM net, UMTS net or.The base station is connected on the fixed network through a circuit 22 in addition, for example the communication network 2 that connects of other static line of ISDN net, PSTN net or.For intercommunication, transmit/receive antenna 5 of home base station 3 domination can be established to other with this transmit/receive antenna home base station and be in mobile radio station 17 and relay station 7 and 8 be connected among the building part A.
Relay station 8 have each one be among the building part A and building part B in transmit/receive antenna 12 and 13.The transmit/receive antenna 14 of the relay station 9 of building part D is among the building part B in addition.Relay station 9 has a transmit/receive antenna 15 that is used for building part D in addition.
Relay station 6 one of the domination of building part A are fixedly coupled line 16, and it makes relay station 6 be connected with the relay station 7 of building part C.Relay station 7 also props up and is used in a transmit/receive antenna 11 that covers building part C.May relate under the situation of the connection 22 between relay station 6 and the relay station 7 at this and to connect or to relate to a microwave by laser or ultrared optical communication and connect.Same this connection can be through single room bus system wireless or that line connects (EIB=europe installation bus for example, EHS=Europe Home System, the Bati bus of Bati bus International Club), or through directional radio communication, WLAN (local area network (LAN)), twisted-pair cable, four line connections, coaxial cable, glass fiber cable, or the like.
In addition, may be in each building part by one or more mobile radio stations, symbol these mobile radio stations of explanation also are furnished with reference signs 17-20.Signify the wireless connections of each assembly of this subsystem with arrow 23-29.
All stationary components of subsystem, be relay station 6-9, comprise home base station 3, " know " each other that these stationary components characterize by the identification code (PIN) of itself.Same static assembly is according to the distinctive identification of PIN separately of each mobile radio station, and whether mobile radio station has the power to visit the communication network of this subsystem.If a mobile radio station of having the right to visit leaves the overlay area of a relay station, and roam in the overlay area of an other relay station, then begin the switching process (transfer) of from first to second relay station.For example mobile radio station 19 can enter the building part D from building part B, just leaves the overlay area of relay station 8 and enters the overlay area of relay station 9.When building part B is transformed into building part D, the beginning hand-over, and at first through home base station 3 to relay station 8, be deployed in mobile radio network 1 or fixed network 2 to the connection between the mobile radio station 19 through home base station 3 through relay stations 8 and relay station 9 then.In this hand-over as new a connection under the situation about setting up dispersedly and the distribution of Adjustment System resource independently.Realization from arrangement like this has been described above.
If mobile radio station 17 moves to building part C from building part A, a corresponding process then for example takes place.In 3 identifications of this home base station, mobile radio station 17 leaves its overlay area, and relay station 7 identifications, and at this moment mobile radio station appears at its overlay area, and impels from home base station 3 to relay station 6 and the hand-over of relay station 7.
If for example mobile radio station 18 moves into building part D from building part C, then its zone is left in relay station 7 identifications, and relay station 9 registration mobile radio stations 18 enter its overlay area.By hand-over, the connection of mobile radio station 18 at first arrives home base station 3 through relay station 7 and 6, transfers relay station 9 to, and the connection of its mobile radio station is through relay station 8 guiding home base station relay stations 3.
In this groups of building inside with building part A-B, the moving freely property of mobile radio station is possible in this way, wherein is submitted to mobile radio network 1 and/or fixed network 2 from each position the connection an of the best.Mobile radio station can interruptedly not roamed during a current connection.
Under situation, in each floor, also can lay relay station than edifice.For example each building can be installed one or more relay stations in having the big groups of building in a plurality of buildings and vacant lot, and a relay station is used for vacant lot, wherein home base station arrives all relay stations through one or more relay stations, and carries out the independent of existing resource and divide.
In Fig. 2, described according to unified other variant of subsystem of the present invention.Be that with the main distinction of Fig. 1 relay station 8 is not in the building A, and is installed in the building B.Building D does not have relay station in addition.
Can consider so situation, on the one hand the apart between building part B and D between building part A and the B and on the other hand satisfy the enough rarenesses of building or the space so approaching, possible other wireless connections of wireless connections 23 between home base station 3 or an other relay station are usefulness enough, so that arrive relay station 8.In a building part, such as here in part D,, then can abandon the existence of a relay station equally if cover this building part jointly by a relay station of settling elsewhere.
When distributing relay station, depend primarily on, realize enough wireless coverages in place, and can between mobile terminal device and home base station, set up a direct or indirect connection from each position as far as possible.To this this is unessential, and promptly many relay stations must be used for connecting.
Claims (28)
1. the house subsystem in a mobile radio network (1) and/or a wired communication network (2) comprises home base station (3), at least one relay station (6 of a fixed-site; 7; 8; 9) and at least one mobile radio station (17; 18; 19; 20), wherein the home base station of fixed-site (3) has at least one to external communication network (1; 2) linkage unit (4; 22) and at least one be used for and at least one relay station (6; 7; 8; 9) the inner transmit/receive antenna (5) that connects, at least one relay station (6; 7; 8; 9) arrange at least one be used for home base station (3) or with an other relay station (6; 7; 8; 9) coupling assembling (10 of Lian Jieing; 11; 12; 13; 14; 15; 16), and arrange at least one be used for or with at least one mobile radio station (17; 18; 19; 20) or with an other relay station (6; 7; 8; 9) transmit/receive antenna (10 of Lian Jieing; 11; 12; 13; 14; 15), and at least one mobile radio station (17; 18; 19; 20) there is one to be used for and mobile radio network (1) and/or a relay station (6; 7; 8; 9) Tong Xin transmit/receive antenna,
It is characterized in that all component (3 of subsystem; 6; 7; 8; 9) have the unit of formation like this, promptly it is used for independently being arranged in home base station, at least one relay station (6; 7; 8; 9) and at least one mobile radio station (17; 18; 19; 20) system resource allocation between.
2. according to the subsystem of claim 1, it is characterized in that, be used for comprising at least that one is used at home base station (3), at least one relay station (6 from the unit of arranging; 7; 8; 9) and at least one mobile radio station (17; 18; 19; 20) algorithm that connects the independent distribution system resource in the middle of existing between, wherein each assembly (3 of subsystem; 6; 7; 8; 9) according to identical algorithm independence occupying system resources.
3. the subsystem that one of requires according to aforesaid right, it is characterized in that, these of home base station or this linkage unit be one be used for a mobile radio network (1) wireless communication and/or the transmitter/receiver unit of a wired connection (22) on fixed communication network (2).
4. according to the subsystem of claim 1, it is characterized in that relay station (6; 7; 8; 9) at least one coupling assembling is that a transmit/receive antenna (4) and/or a cable connect (16).
5. according to the subsystem of claim 1, it is characterized in that at least one relay station (6 is passed through in the communication from home base station to a mobile radio station under the situation of at least one connecting line; 7; 8; 9) or through a plurality of relay stations that communicate with one another (6; 7; 8; 9).
6. according to the subsystem of claim 1, it is characterized in that different distributed system resources comprise different frequencies at least.
7. according to the subsystem of claim 1, it is characterized in that different distributed system resources comprise different time slots at least.
8. according to the subsystem of claim 1, it is characterized in that different distributed system resources comprise different code division multiple access " CDMA " code at least.
9. according to the subsystem of claim 1, it is characterized in that each mobile radio station (17; 18; 19; 20), each relay station (6; 7; 8; 9) and each distinctive identification code " PIN " of home base station (3) domination, and relay station (6; 7; 8; 9) and/or one of home base station (3) domination be used to distinguish the unit of the mobile radio station that visit approval and visit do not approve.
10. according to the subsystem of claim 9, it is characterized in that a data memory is arranged in the unit that is used to distinguish the visit approval and visit the mobile radio station of not approving, it comprises the PIN of the mobile radio station of visit approval.
11. the subsystem according to claim 1 is characterized in that, cancels the connection of subsystem to mobile radio network (1) according to the FDD method, and cancels connection in subsystem according to Frequency Division Duplexing (FDD) TDD method.
12. the method according to claim 1 is characterized in that, at a relay station (6; 7; 8; 9) under the situation, this relay station props up to be used in carries out mobile radio station (17; 18; 19; 20) take over mobile radio station (17 to the transfer of home base station (3) and/or from home base station (3); 18; 19; 20) unit.
13. the subsystem according to claim 1 is characterized in that, at least two relay stations (6; 7; 8; 9) under the situation, these relay stations prop up to be used in carries out mobile radio station (17; 18; 19; 20) relay station (6 is transferred in connection to; 7; 8; 9) unit.
14. the subsystem according to claim 1 is characterized in that, at least one relay station (6; 7; 8; 9) prop up and be used at mobile radio network (1) and relay station (6; 7; 8; 9) carry out mobile radio station (17 between; 18; 19; 20) connection is transferred and is connected the unit of taking over.
15. the subsystem according to claim 1 is characterized in that, subsystem is assigned to global system for mobile communications " GSM " net.
16. the subsystem according to claim 1 is characterized in that, subsystem is distributed to universal mobile telecommunications system " UMTS " net.
17. the subsystem according to claim 1 is characterized in that, distributes to ISDN(Integrated Service Digital Network) " ISDN " net about the subsystem that fixed network connects.
18. the subsystem according to claim 1 is characterized in that, distributes to the PSTN net about the subsystem that fixed network connects.
19. the subsystem according to claim 1 is characterized in that, distributes to power net/power-line network about the subsystem that fixed network connects.
20. the subsystem according to claim 1 is characterized in that, distributes to Digital Subscriber Line/asynchronous digital subscriber line " SDSL/ADSL " net about the subsystem that fixed network connects.
21. method for communicating in a subsystem of mobile radio network (1) and/or wire net, wherein in subsystem, it comprises a plurality of assemblies, and these assemblies comprise home base station, at least one relay station (6; 7; 8; 9) and at least one mobile radio station (17; 18; 19; 20), wherein home base station (3) is maintained to a mobile radio network (1) and being connected of a fixed network (2) perhaps, and this connects by means of at least one relay station (6; 7; 8; 9) be passed at least one mobile radio station (17; 18; 19; 20), it is characterized in that at least one relay station (6; 7; 8; 9) independently bear resource allocation.
22. the method according to claim 21 is characterized in that, for resource allocation is counted the time slot of frequency and/or application and/or the distribution of CDMA code.
23. method according to one of said method claim, it is characterized in that, only this assembly, particularly mobile radio station or base station, this unit startup logic connects to be set up, beginning independently takies resource, particularly sets up/cancel data channel between the nearest coupling assembling of own and this logic connection chain, and if one or more relay station (6; 7; 8; 9) be in this logic connecting line, then relay station (6 separately; 7; 8; 9) bear the channel foundation that comprises that independent resource takies to nearest assembly.
24. the method according to claim 21 is characterized in that, a relay station (6; 7; 8; 9) serve a plurality of mobile radio stations (17 simultaneously; 18; 19; 20).
25. the method according to claim 21 is characterized in that, relay station (6; 7; 8; 9) on a Broadcast Control Channel " BCCH ", send the table of the resource that a mobile radio station occupied, that do not allow to connect startup takies.
26. the method according to claim 21 is characterized in that, this method is implemented to be used for a connection from fixed network and/or mobile radio network (1) starting and is set up " calling of incoming call ".
27. the method according to claim 21 is characterized in that, this method is implemented to be used for a connection from the subsystem starting and is set up " calling of exhalation ".
28. the method according to claim 21 is characterized in that, in subsystem inside, at these at different relay stations (6; 7; 8; 9) between and/or at a relay station (6; 7; 8; 9) implement this method and in the connection hand-over between base station (3).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19844099.5 | 1998-09-25 | ||
| DE19844099A DE19844099A1 (en) | 1998-09-25 | 1998-09-25 | In-house subsystem in a cellular network |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1320343A CN1320343A (en) | 2001-10-31 |
| CN1146283C true CN1146283C (en) | 2004-04-14 |
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ID=7882284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB998114154A Expired - Fee Related CN1146283C (en) | 1998-09-25 | 1999-09-23 | In-house subsystem in mobile radio telephone network |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP1116403A1 (en) |
| JP (1) | JP2002527004A (en) |
| KR (1) | KR20010082213A (en) |
| CN (1) | CN1146283C (en) |
| AU (1) | AU1261500A (en) |
| DE (1) | DE19844099A1 (en) |
| WO (1) | WO2000019754A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6449477B1 (en) * | 2000-04-25 | 2002-09-10 | Qualcomm, Incorporated | Radio frequency coverage of an enclosed region by arrangement of transceivers within the region |
| US6704592B1 (en) * | 2000-06-02 | 2004-03-09 | Medrad, Inc. | Communication systems for use with magnetic resonance imaging systems |
| JP3898877B2 (en) * | 2000-07-03 | 2007-03-28 | 株式会社エヌ・ティ・ティ・ドコモ | Radio channel assignment method, radio communication system, and radio relay apparatus |
| DE10221421A1 (en) * | 2002-05-14 | 2003-08-07 | Siemens Ag | Assigning resources in self-organized communications system involves operating second station with connection to central controller as second station superior to central station |
| KR100700536B1 (en) * | 2004-10-29 | 2007-03-28 | 엘지전자 주식회사 | Communication system for multi type air conditioner |
| EP2058958B1 (en) * | 2006-10-13 | 2015-10-28 | Fujitsu Limited | Wireless base station, relay station and frequency band allocation method |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3843565A1 (en) * | 1988-12-23 | 1990-06-28 | Standard Elektrik Lorenz Ag | RADIO TELEPHONE SYSTEM IN THE FORM OF A PABX |
| US5212831A (en) * | 1990-11-28 | 1993-05-18 | Bell Communications Research, Inc. | Method and apparatus for autonomous adaptive frequency assignment in TDMA portable radio systems |
| US5265150A (en) * | 1991-01-30 | 1993-11-23 | At&T Bell Laboratories | Automatically configuring wireless PBX system |
| CA2054591C (en) * | 1991-02-28 | 1996-09-03 | Giovanni Vannucci | Wireless telecommunication systems |
| JPH07504555A (en) * | 1992-08-03 | 1995-05-18 | モトローラ・インコーポレイテッド | Wireless PBX systems that use frequency scanners for channel identification |
| SE516173C2 (en) * | 1993-02-16 | 2001-11-26 | Ericsson Telefon Ab L M | Device for telecommunications |
| US5903834A (en) * | 1995-10-06 | 1999-05-11 | Telefonaktiebolaget L/M Ericsson | Distributed indoor digital multiple-access cellular telephone system |
| GB2308042B (en) * | 1995-12-05 | 2000-02-16 | Motorola Ltd | Radio communication system |
-
1998
- 1998-09-25 DE DE19844099A patent/DE19844099A1/en not_active Withdrawn
-
1999
- 1999-09-23 AU AU12615/00A patent/AU1261500A/en not_active Abandoned
- 1999-09-23 CN CNB998114154A patent/CN1146283C/en not_active Expired - Fee Related
- 1999-09-23 KR KR1020017003841A patent/KR20010082213A/en not_active Application Discontinuation
- 1999-09-23 EP EP99955775A patent/EP1116403A1/en not_active Withdrawn
- 1999-09-23 JP JP2000573115A patent/JP2002527004A/en active Pending
- 1999-09-23 WO PCT/DE1999/003045 patent/WO2000019754A1/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| WO2000019754A1 (en) | 2000-04-06 |
| CN1320343A (en) | 2001-10-31 |
| KR20010082213A (en) | 2001-08-29 |
| AU1261500A (en) | 2000-04-17 |
| EP1116403A1 (en) | 2001-07-18 |
| DE19844099A1 (en) | 2000-03-30 |
| JP2002527004A (en) | 2002-08-20 |
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