WO2003069938A1 - Verfahren zur verwaltung von funkressourcen in einem funk-kommunikationssystem - Google Patents
Verfahren zur verwaltung von funkressourcen in einem funk-kommunikationssystem Download PDFInfo
- Publication number
- WO2003069938A1 WO2003069938A1 PCT/DE2003/000355 DE0300355W WO03069938A1 WO 2003069938 A1 WO2003069938 A1 WO 2003069938A1 DE 0300355 W DE0300355 W DE 0300355W WO 03069938 A1 WO03069938 A1 WO 03069938A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- functional unit
- function
- radio
- central
- decentralized
- Prior art date
Links
- 238000007726 management method Methods 0.000 title abstract 3
- 238000005259 measurement Methods 0.000 claims abstract description 23
- 238000004891 communication Methods 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 24
- 238000012546 transfer Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000011664 signaling Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
- H04W36/00835—Determination of neighbour cell lists
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/34—Signalling channels for network management communication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/14—Reselecting a network or an air interface
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/16—Performing reselection for specific purposes
- H04W36/22—Performing reselection for specific purposes for handling the traffic
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
Definitions
- the invention relates to a method for managing radio resources in a radio communication system, in particular for controlling an intersystem call forwarding.
- radio communication systems for example the European mobile radio system of the second generation GSM (Global System for Mobile Communications)
- information for example voice, image information or other data
- the radio interface relates to a connection between a base station and subscriber stations, where the subscriber stations can be mobile stations or fixed radio stations.
- the electromagnetic waves are emitted at carrier frequencies that lie in a frequency band provided for the respective system.
- UMTS Universal Mobile Telecommunication System
- frequencies in the frequency band of approx. 2000 MHz are provided.
- Two modes are provided for the third mobile radio generation, one mode denoting FDD operation (frequency division duplex) and the other mode denoting TDD operation (time division duplex).
- a first proposal provides for a physical CRRM server that controls the entire procedure of the InterSystem connection forwarding. This proposal has the disadvantage that the forwarding process is additionally delayed due to this central server, and the exchange of information between the central CRRM server and the decentralized RRM node (for example RNC, BSC) of the system becomes very time-critical.
- a second proposal provides an interface for the exchange of measurements of the at each RRM node
- the object of the invention is therefore to provide a method which avoids the disadvantages of the solutions described. This object is solved by the features of the independent claims. Advantageous developments of the invention can be found in dependent patent claims.
- a central functional unit for joint management of the radio resources in particular in the sense of a CRRM, is implemented, which communicates with the decentralized functional units involved, for example RRM nodes.
- the central functional unit receives information from the decentralized functional units, for example measurements, with regard to utilization, for example with regard to a radio cell load, and controls the intersystem call forwarding by defining an intersystem call forwarding policy that is signaled to the decentralized functional units.
- the decentralized functional units are responsible for executing the intersystem call forwarding in accordance with the specified procedure.
- the central functional unit is not directly involved in the decision to forward the Intersystem connection, which advantageously means that no real-time requirements have to be met.
- a manufacturer-independent or operator-independent global CRRM strategy can be pursued.
- the information from the decentralized functional units is evaluated in the central functional unit and a ranking of potential targets for controlling the intersystem call forwarding is determined. This particular ranking is then made available to at least one of the decentralized functional units.
- the decentralized functional units are split up into functional subunits.
- Mobile functional subunits for example mobile stations of subscribers, make a decision about a point in time and / or a destination of an intersystem call forwarding.
- network-bound functional subunits communicating directly with the central functional unit define rules and / or parameters for the intersystem connection relay based on the information received from the central functional unit.
- the network-linked functional subunits then signal the rules and / or parameters the mobile functional subunits, which in turn take these rules and / or parameters into account in the Intersyste connection forwarding.
- 1 shows the functional interfaces for implementing the common management of radio resources.
- FIG 1 shows the interfaces and the signaling flow between the units of one or more systems.
- the method steps described below for an intersystem call forwarding can be applied in the same way to an intrasystem call forwarding.
- a user terminal UE is supplied with radio resources via serving radio cells.
- the management of the radio resources in the serving radio cells is carried out in a first decentralized functional unit (serving RRM function).
- the first decentralized functional unit receives measurements of the transmission quality to at least one of the neighboring radio cells (neighboring cells) of a parallel radio communication system that is suitable for an intersystem communication system.
- Call forwarding comes into consideration. Which neighboring radio cells or which neighboring radio communication system comes into consideration (neighborhood definition) is possibly determined by the first decentralized functional unit operation and maintenance center (O&M - Operation and
- This operating and maintenance center can also optionally specify the system-specific or global strategy of the central radio resource management (CRRM strategy) of the central functional unit for common radio resource management (CRRM function).
- the first decentralized functional unit receives measurements of a respective load measurement of the serving radio cells connected to it. The first decentralized functional unit signals these measurements after a load measurement request to the central functional unit. The same is done in the second decentralized unit (neighboring RRM function). After evaluating the information, the central functional unit determines a target utilization (load target) and / or a ranking of the neighboring radio cells (neighbor cell ranking) and signals this to the first decentralized functional unit. Taking this information and the procedure defined thereby into account, the first decentralized functional unit subsequently controls the intersystem call forwarding (ISHO execution).
- ISO execution intersystem call forwarding
- the CRRM procedure is thus given to the decentralized functional units by defining the target utilization of the radio cells under their responsibility and by defining a ranking of the neighboring radio cells.
- the decentralized functional unit can select a suitable radio cell or a suitable system for the intersystem call forwarding.
- it can also have a plurality of central functional units who exchange rankings and / or load measurements with each other.
- the functional units can be implemented in different ways in a radio communication system.
- the central functional unit is implemented in one or more CRRM servers.
- the decentralized functional units are implemented exclusively in the known radio network nodes, such as the RNC or BSC, which are affected by the intersystem call forwarding.
- the central functional unit is implemented in one or more CRRM servers.
- the decentralized functional units are implemented in the known radio network nodes, such as the RNC or BSC, and in the subscriber terminal.
- the rankings of the neighboring radio cells are transmitted to the subscriber terminals, for example by broadcast messages which are affected by an intersystem call forwarding decision.
- the central functional units are implemented in one, several or all radio network nodes, such as the RNC or BSC. The procedure, for example in the form of the ranking of the respective neighboring cells, is exchanged between these radio network nodes.
- the decentralized functional units are also, possibly exclusively, implemented in radio network nodes, such as the RNC or BSC, which are affected by or support the Intersyste connection forwarding decision.
- the central functional units are in one, several or all radio network notes, such as the RNC or BSC, realized. The procedure, for example in the form of the ranking of the respective neighboring radio cells, is exchanged between these radio network nodes.
- the decentralized functional units are also, possibly exclusively, implemented in radio network nodes, such as the RNC or BSC, and the subscriber terminals. The rankings of the neighboring radio cells are transmitted to the subscriber terminals, for example by broadcast messages which are affected by or support an intersystem connection forwarding decision.
- the subscriber terminal can be informed of the procedure, for example by adapting the parameters for radio cell selection (Cell (Re) Selection) and / or the parameters for reporting the inter-frequency and intersystem measurements. This advantageously allows known procedures on the
- Radio interface are used to guide the subscriber terminal in order to carry out an inter-system call forwarding or an inter-system radio cell selection (inter system cell reselection) in such a way that the radio cell load reaches a suitable target value.
- the task of the common radio resource management is the central management of the load.
- the administration can do this the load between different radio communication systems or between different layers or hierarchy levels within a radio communication system.
- the assignment of a subscriber terminal to a system or a shift can take place depending on the service or the combination of services and / or on the speed of the subscriber terminal.
- the control of the InterSystem connection forwarding is thus a functionality of the common radio resource management. In the following, only the case of an intersystem connection forwarding will be considered, however, the functionalities and mechanisms described can be used in the same way for intrasystem connection forwarding, for example between hierarchical levels of a system.
- the following information which is taken into account by the common radio resource management or the central functional unit, is necessary or sensible for the decision on an intersystem call forwarding.
- this is the service or the services and possibly the speed of the subscriber terminal.
- Adjacent radio cells must also be available, to which the call can be forwarded.
- the respective current connection quality (radio link quality) of the serving and neighboring radio cells and their target connection quality are further parameters that should be known.
- the respective current radio cell load and the corresponding target radio cell load of the supplying and neighboring radio cells should be known, and these can also be determined in a service-specific and possibly speed-specific manner.
- the following information is available to the decentralized functional units.
- the service or services of the subscriber terminal are signaled by the central network when the connection is established.
- the operation and maintenance center specifies possible goals for the intersystem forwarding, connection quality goals and a respective maximum radio cell load of the serving radio cells.
- the respective current connection quality to the serving and the neighboring radio cells is known from the signaled measurements of the subscriber terminals.
- the current load levels of the serving radio cells are known from signaled measurements of the base stations (Node B or BTS) of the radio cells.
- the current dynamic target load of the serving radio cells and the current target load and load of the neighboring radio cells are unknown in the decentralized functional units.
- the absence of the first parameter disadvantageously leads to an uncertainty as to when a connection is to be forwarded, and the absence of the second parameters makes this difficult
- the target loads are specified by the O&M, which enables only suboptimal inter-system load distribution, during which the target load and the current load are unknown, ie the connection must be forwarded without this knowledge.
- the parameters are brought together in the central functional unit and made available to the decentralized functional units.
- the target loads can be communicated dynamically as required, for example using abstract values (0% ... 100%), system, shift or radio line, service and / or speed specific.
- the difference between the load values and the target values can be communicated by means of a service and / or speed-specific ranking of the neighboring radio cells, for example by means of the marking “forwarding is desired, allowed, not desired, prohibited”.
- the function of the common radio resource management or the central functional unit initially consists in requesting load measurements from the decentralized functional units and merging the measurement results. It then decides on radio cell and, if applicable, service-specific target loads. The decentralized functional units then inform you about the target loads of the assigned radio cells. Furthermore, it determines radio line and possibly service-specific ranking values and informs the decentralized functional units of the respective ranking sequences of the neighboring radio cells.
- the function of the decentralized functional unit is to carry out measurements as requested by the central functional unit. Furthermore, it accepts the target loads signaled by the central functional unit for the radio cells it controls and the signaled ranking of the neighboring radio cells. Taking this information into account, it autonomously decides on an intersystem call forwarding.
- the central functional unit therefore advantageously only specifies the procedure by specifying target values and radio line rankings. These parameters are not dependent on real time and the signaling load on the interfaces between the central and the decentralized functional units is limited. Furthermore, the central functional unit only has to meet low reliability requirements, since the decentralized functional units can work autonomously, for example by using them as parameters
- the implementation can be designed very flexibly.
- the central functional unit can be implemented on a central server as well as distributed over several system components.
- the interface between the central and the decentralized units can be standardized, whereas the algorithms and decision strategies used in the decentralized units can be implemented specifically for the manufacturer or operator.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Devices For Checking Fares Or Tickets At Control Points (AREA)
- Exchange Systems With Centralized Control (AREA)
- Small-Scale Networks (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE50308912T DE50308912D1 (de) | 2002-02-11 | 2003-02-07 | Verfahren und entsprechende vorrichtungen zur verwaltung von funkressourcen in einem funk-kommunikationssystem |
AU2003208285A AU2003208285A1 (en) | 2002-02-11 | 2003-02-07 | Management method for radio resources in a radio telecommunication system |
US10/504,208 US7890104B2 (en) | 1920-04-04 | 2003-02-07 | Management method for radio resources in a radio telecommunication system |
JP2003568919A JP4160908B2 (ja) | 2002-02-11 | 2003-02-07 | 無線通信システムにおいて無線リソースを管理する方法 |
EP03706299A EP1474946B1 (de) | 2002-02-11 | 2003-02-07 | Verfahren und entsprechende vorrichtungen zur verwaltung von funkressourcen in einem funk-kommunikationssystem |
US12/980,569 US20110098036A1 (en) | 2002-02-11 | 2010-12-29 | Management method for radio resources in a radio telecommunication system |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10205575 | 2002-02-11 | ||
DE10205575.0 | 2002-02-11 | ||
DE10214934.8 | 2002-04-04 | ||
DE10214934A DE10214934A1 (de) | 2002-02-11 | 2002-04-04 | Verfahren zur Verwaltung von Funkressourcen in einem Funk-Kommunikationssystem |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/504,208 Continuation US7890104B2 (en) | 1920-04-04 | 2003-02-07 | Management method for radio resources in a radio telecommunication system |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003069938A1 true WO2003069938A1 (de) | 2003-08-21 |
Family
ID=27735665
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2003/000355 WO2003069938A1 (de) | 1920-04-04 | 2003-02-07 | Verfahren zur verwaltung von funkressourcen in einem funk-kommunikationssystem |
Country Status (8)
Country | Link |
---|---|
US (2) | US7890104B2 (de) |
EP (1) | EP1474946B1 (de) |
JP (1) | JP4160908B2 (de) |
CN (1) | CN100452914C (de) |
AT (1) | ATE383045T1 (de) |
AU (1) | AU2003208285A1 (de) |
DE (1) | DE50308912D1 (de) |
WO (1) | WO2003069938A1 (de) |
Cited By (8)
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EP1475980A1 (de) * | 2003-04-29 | 2004-11-10 | Nokia Corporation | Methode und System zum Austausch von Kapazitätsreports in einem Funkzugriffsnetzwerk |
WO2005060294A1 (en) * | 2003-12-17 | 2005-06-30 | Telefonaktiebolaget Lm Ericsson (Publ) | System and method for radio resource management in a communication system |
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CN1333607C (zh) * | 2003-10-08 | 2007-08-22 | 日本电气株式会社 | 无线电通信***的管理方法、***和管理设备 |
EP1849322A1 (de) * | 2005-02-18 | 2007-10-31 | Telefonaktiebolaget LM Ericsson (publ) | Steuereinheit und verfahren zur steuerung der auslastung in einem mobiltelekommunikationsnetz |
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JP4160908B2 (ja) * | 2002-02-11 | 2008-10-08 | シーメンス アクチエンゲゼルシヤフト | 無線通信システムにおいて無線リソースを管理する方法 |
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CN101204108B (zh) * | 2005-06-17 | 2012-12-12 | 艾利森电话股份有限公司 | 通信资源管理 |
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EP1895801A1 (de) * | 2006-08-30 | 2008-03-05 | Nokia Siemens Networks Gmbh & Co. Kg | Verfahren zur ausgeglichenen Verteilung der Verkehrslast zwischen nahen, in innere und äußere Gruppierungen angeordnete, LTE/WiMAX-Funkzellen |
CN101141771B (zh) * | 2006-09-08 | 2011-08-10 | 华为技术有限公司 | 实现频谱共享的无线资源管理***及方法 |
KR20080041535A (ko) * | 2006-11-07 | 2008-05-13 | 한국전자통신연구원 | 핸드오버 타깃 네트워크 선택 방법 및 그 시스템 |
CN101207913A (zh) * | 2006-12-21 | 2008-06-25 | 华为技术有限公司 | 具有多种无线接入***共存的网络*** |
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- 2003-02-07 AT AT03706299T patent/ATE383045T1/de not_active IP Right Cessation
- 2003-02-07 AU AU2003208285A patent/AU2003208285A1/en not_active Abandoned
- 2003-02-07 WO PCT/DE2003/000355 patent/WO2003069938A1/de active IP Right Grant
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- 2003-02-07 US US10/504,208 patent/US7890104B2/en not_active Expired - Fee Related
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2010
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Cited By (18)
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US7489903B2 (en) | 2003-04-29 | 2009-02-10 | Nokia Corporation | Method and system for exchanging the capacity reports in a radio access network |
EP1475980A1 (de) * | 2003-04-29 | 2004-11-10 | Nokia Corporation | Methode und System zum Austausch von Kapazitätsreports in einem Funkzugriffsnetzwerk |
CN1333607C (zh) * | 2003-10-08 | 2007-08-22 | 日本电气株式会社 | 无线电通信***的管理方法、***和管理设备 |
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EP1829393A1 (de) * | 2004-12-14 | 2007-09-05 | Telefonaktiebolaget LM Ericsson (publ) | Verfahren und vorrichtung zum lenken von leerlaufenden mobilstationen |
WO2006065198A1 (en) * | 2004-12-14 | 2006-06-22 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for steering idle mobile stations |
EP1829393A4 (de) * | 2004-12-14 | 2012-10-31 | Ericsson Telefon Ab L M | Verfahren und vorrichtung zum lenken von leerlaufenden mobilstationen |
EP1849322A1 (de) * | 2005-02-18 | 2007-10-31 | Telefonaktiebolaget LM Ericsson (publ) | Steuereinheit und verfahren zur steuerung der auslastung in einem mobiltelekommunikationsnetz |
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US9408108B2 (en) | 2005-02-18 | 2016-08-02 | Telefonaktiebolaget Lm Ericsson (Publ) | Control unit and method for controlling the load in a mobile telecommunications network |
US9326202B2 (en) | 2008-05-12 | 2016-04-26 | Telecom Italia S.P.A. | Method and system for the common management of communication resources in a telecommunications network having distinct communication resources pools |
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Also Published As
Publication number | Publication date |
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CN1631054A (zh) | 2005-06-22 |
CN100452914C (zh) | 2009-01-14 |
ATE383045T1 (de) | 2008-01-15 |
EP1474946A1 (de) | 2004-11-10 |
AU2003208285A1 (en) | 2003-09-04 |
DE50308912D1 (de) | 2008-02-14 |
JP2005518168A (ja) | 2005-06-16 |
US20110098036A1 (en) | 2011-04-28 |
EP1474946B1 (de) | 2008-01-02 |
JP4160908B2 (ja) | 2008-10-08 |
US20050090257A1 (en) | 2005-04-28 |
US7890104B2 (en) | 2011-02-15 |
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