EP1943775A1 - Verfahren zum betreiben eines mobilen endgerätes in einem kommunikationsnetz, mobiles endgerät und netzknoten - Google Patents
Verfahren zum betreiben eines mobilen endgerätes in einem kommunikationsnetz, mobiles endgerät und netzknotenInfo
- Publication number
- EP1943775A1 EP1943775A1 EP05809871A EP05809871A EP1943775A1 EP 1943775 A1 EP1943775 A1 EP 1943775A1 EP 05809871 A EP05809871 A EP 05809871A EP 05809871 A EP05809871 A EP 05809871A EP 1943775 A1 EP1943775 A1 EP 1943775A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- decision
- change
- communication
- mobile terminal
- service
- 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.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
Definitions
- WO 2005/027556 A1 discloses a method in which the handover of a communication connection of a mobile terminal takes place from the network currently used by the terminal to another network Based on the network parameters, so-called candidate networks are selected which are fundamentally suitable for handover of the communication connection Subsequently, connection parameters ("link parameters xx ) are determined for each of the candidate networks, which establishes a communication connection between the mobile terminal and the respective candidate network Based on connection parameters for each of the candidate networks, a selection of the destination network is made to which the handover of the communication connection is subsequently performed parameters such as the minimum data rate, the cost of the service or the quality of service are taken into account.
- the mobile terminal makes a change in the network it uses, the handover being controlled by a control function.
- OSI Open System Interconnection
- this defines a protocol stack of mutually constituting communication protocols for various functions that are generally required for communication.
- the following layers are distinguished: physical layer (layer 1), data link layer (layer 2), network layer (layer 3), transport layer (layer A), 1 session layer ( Session layer, layer 5), presentation layer (layer 6) and application layer (layer 7).
- layers are distinguished: physical layer (layer 1), data link layer (layer 2), network layer (layer 3), transport layer (layer A), 1 session layer ( Session layer, layer 5), presentation layer (layer 6) and application layer (layer 7).
- layers of the OSI reference model can also be provided by a single communication protocol.
- the present invention has for its object to provide a flexible and efficient method for operating a mobile terminal in a communication network.
- This object is achieved according to the invention by a method for operating a mobile terminal in a communication network, in which at least one service of the communication network is used by the mobile terminal and a decision device based on the. Using a protocol stack constructed from a communication protocol or from several communication protocols decision-relevant event data for the at least one service is determined individually, if any change is to take place, and optionally for the at least one
- the decision device is preferably arranged in the mobile terminal, in a network node of the communication network or partially in the mobile terminal and partly in a network node of the communication network.
- the method according to the invention is advantageous because the decision device provides a central component which, depending on the situation - for example based on programmable rules - and thus flexibly decides whether a change is to be made at all.
- This advantageously eliminates the need to implement a decision in this regard as a fixed and thus inflexible extension of the communication protocol of the protocol stack.
- the decision-making device can use the decision-relevant event data to decide, depending on the situation, whether and, if appropriate, how to react to the decision-relevant event data, as in the respective present situation. In this case, for example, a
- Selection can be made between different available mobility mechanisms.
- a further advantage of the method according to the invention is that it is individually decided for the at least one service which type of change is made and the change is to be made using which communication protocol or of which communication protocols. This means that for every service. At- can be made individually, which is the most appropriate for the respective service in the current situation. The change for a particular service is thereby completely independent of other possibly simultaneously active services on the mobile terminal, which are thus advantageously not affected in any way by the change for the at least one service.
- a handover service specific ie individually for a service done. Further services used by the mobile terminal can thereby still use the previous communication network, ie no handover is made for these services.
- the prerequisite for this is that the mobile terminal supports simultaneous connections to multiple communication networks.
- the decision-making device can determine the mechanism, which is optimal under the respective conditions, for carrying out the change.
- the result of the decision process preferably informs the decision-making device of the communication protocols concerned in the form of a feedback by means of suitable control parameters.
- the communication network is preferably a mobile radio network, for example in accordance with the GSM (Global System for Mobile Communication), the GPRS (General Packet Radio Service), the EDGE (Enhanced Data Rates for GSM Evolution), the CDMA (Code Division Multiple Access), WLAN (Wireless Local Area Network), Bluetooth or UMTS (Universal Mobile Telecommunication System) standard.
- GSM Global System for Mobile Communication
- GPRS General Packet Radio Service
- EDGE Enhanced Data Rates for GSM Evolution
- CDMA Code Division Multiple Access
- WLAN Wireless Local Area Network
- Bluetooth Universal Mobile Telecommunication System
- the data relating to the mobility of the mobile terminal are used as decision-relevant event data.
- This embodiment is preferred because there are a variety of different solutions to support the mobility of mobile terminals, which are often implemented in different communication protocols of the respective protocol stack.
- the data relating to the mobility of the mobile terminal may, for example, be data indicating that, due to a decreasing transmission quality caused by a change of location, a change of the communication network could be useful or necessary.
- the decision device determines on the basis of programmable or configurable rules whether a change and, if appropriate, which type of change is made. This is advantageous because it is thus possible by means of the rules to determine in a simple and flexible manner which decision the decision-making device should make depending on the situation. This allows quick and easy changes.
- the rules are set preferably by the network operator, the service provider or the user of the mobile terminal. In the latter case, each user can specify individually for himself and each service, based on which rules the decision-making device should determine whether a change and, if so, what kind of change should be made.
- the method according to the invention can advantageously also be designed such that the decision device takes into account further decision-relevant data of the one communication protocol or at least one of the communication protocols. This embodiment is preferred since the decision device can thus request situation-dependent further decision-relevant data from at least one of the communication protocols and incorporate it into the decision about the change.
- the method according to the invention preferably proceeds in such a way that the decision device takes into account further context information.
- the further context information can be, for example, information about the network topology, the location or the direction of movement of the mobile terminal. This embodiment is advantageous since any further information can thus be included in the decision about the change, which increases the flexibility still further.
- the method according to the invention is so pronounced that the change consists in a transfer of the at least one service of the mobile terminal from a network access point of the communication network to a network access point of a further communication network.
- the decision device thus controls whether and, if appropriate, to which further communication the relevant service is to be transferred. It should again be noted that a corresponding transfer is made individually for each service, ie not for the gesarate mobile terminal with all its services and communication connections a change is performed, but only for the service, for a corresponding decision by the decision maker has been taken.
- the inventive method can also run so that the change in stopping, restarting or terminating the at least one service of the mobile terminal consists.
- This offers the advantage that, for example, if the transmission quality is impaired, the decision-making device does not necessarily require a handover of a transmission quality
- the invention also relates to a mobile terminal.
- the mobile terminal may, for example, be a mobile telephone, a mobile computer ("laptop"), a so-called PDA (Personal Digital Assistant) with a radio interface or else a radio module Form of a mobile network in a variety of areas, such as for applications in the so-called machine-to-machine (machine-to-machine, M2M) environment or to support applications in the field of telematics used.
- the present invention has for its object to provide a flexible and powerful mobile terminal.
- a mobile terminal for using at least one service of a communication network using a protocol stack composed of a communication protocol or of several communication protocols with a decision device having means for receiving decision-relevant event data of a communication protocol or at least one of the communication protocols, analysis means for evaluating the decision-relevant Event data, decision means for the individual decision for the at least one service, whether a change should always be made and, if appropriate, for deciding what kind of change is to be made using which communication protocol or of which of the communication protocols, and means for signaling the change to the relevant communication protocol or the respective communication protocols.
- the mobile terminal according to the invention is preferred since it allows decision-relevant event data of a communication protocol or of several communication protocols to lead to a decision made by the mobile terminal as to whether any change is to be made and, if appropriate, what type of change using which communication protocol or from which communication protocols of the protocol stack is to be made.
- the mobile terminal according to the invention has a memory device connected to the decision device for storing programming baren or configurable rules that determine whether a change and, if necessary, which type of change is made. This advantageously makes it possible for each service that runs on the mobile terminal to be able to define situation-dependent rules in a simple and flexible manner, which specify the further desired procedure for the respective situation.
- the mobile terminal according to the invention can also be configured such that the decision device has means for requesting further decision-relevant data from the one communication protocol or at least one of the communication protocols.
- the mobile terminal advantageously makes it possible to actively request further decision-relevant data itself, which it requires to make a decision.
- the mobile terminal according to the invention is designed such that the decision device has means for receiving further context information. This is advantageous, since therefore context information other than the decision-relevant event data provided by the communication protocol or by one or more of the communication protocols can also be taken into account by the decision means of the decision device.
- 1 shows a schematic sketch of an embodiment of the method according to the invention and 2 shows a schematic sketch of an embodiment of the mobile terminal according to the invention.
- FIG. 1 shows a decision device 11 which can receive decision-relevant event data from communication protocols L1 ... L ⁇ .
- the decision device 11 can be arranged, for example, in a mobile terminal or also in a network node of a communications network. In addition, it is also conceivable that the
- Decision device 11 is partially arranged in the mobile terminal and partly in a network node of the communication network.
- the functions in the communication protocol L ⁇ are generally summarized in the layers 6 and 7 of the OSI system.
- protocol stack consists of six communication protocols L1 ... L ⁇ .
- the first concrete example is a company premises with coverage by a WLAN (Wireless Local Area Network).
- WLAN Wireless Local Area Network
- VoIP Voice over Internet Protocol
- a mobile terminal which both a WLAN card and a UMTS (Universal Mobile Telecommunication System) - or GPRS (General Packet Radio Service) card and thus can use the appropriate communication networks.
- UMTS Universal Mobile Telecommunication System
- GPRS General Packet Radio Service
- the decision device 11 of the mobile terminal has been configured by the employee by means of rules in this way. That, in the presence of a WLAN this is to be used for a VoIP service. Furthermore, it is intended to switch to UMTS if a handover by means of the communication protocol L2 within the WLAN is no longer possible. This can be detected, for example, by means of a service interruption or context information. In addition, it is stipulated that UMTS should switch back to WLAN if the mobile terminal is associated with an access node (so-called "access point") of the WLAN for more than 2 minutes.
- access point access node
- the communication protocol L2 transmits decision-relevant event data to the decision device 11 of the mobile terminal.
- the decision-relevant event data contain the information that the transmission quality of the mobile terminal has worsened greatly in the WLAN.
- I are decision-relevant event data represented by the open thick arrows. It is indicated that, in principle, each of the communication protocols L1... L6 has decision-relevant event data to the decision device
- the decision device 11 determines based on the decision-relevant event data and using the configured rules that in the present situation, a change for the VoIP service is made, in the form of a change in the also available communication network according to the UMTS standard. In this case, the decision device 11 determines that a corresponding handover of the communication protocol L2 is to be carried out. For this reason, a feedback (in FIG. Kels filled arrows indicated) given by the decision device 11 to the protocol stack to establish a UMTS data connection. Subsequently, the decision device 11 must decide whether a handover by means of Mobile IP is possible, or whether another method should be used. In the present exemplary embodiment, it is assumed that both the home network and the visited network (ie the network in which the mobile terminal is currently staying) support Mobile IP, which is why the handover takes place by means of Mobile IP.
- the communication protocols that provide decision-relevant event data to the decision device 11 and the communication protocols that implement a change specified by the decision device 11 may be identical, but need not be identical. Thus, not only several communication protocols may be affected by the implementation of a change, but it is quite possible that the communication protocol which decision-relevant event data has been delivered to the decision device 11 or the communication protocols, which have delivered decision-relevant event data to the decision device 11, not the implementation of the change is or are involved.
- the mobile terminal would have different access technologies supports the attempt to attempt a han- dver to another access technology in the event of disruptions in the data transmission via the used communication network. If this alternative access technology only offers low data throughput at a high cost, this increases the price of the file but only marginally shortens the time.
- the decision device 11 can now be configured, for example, with a rule which states that only those access technologies are to be used for downloading files which have a rate of at least 100 kB / s and a price of less than 2 € / MB ,
- Another rule might specify that another access technology should be used if a break in the connection over the preferred communication network takes longer than, say, 10 minutes.
- other rules with data rate or cost criteria could be provided.
- a significant advantage of the method according to the invention is that it allows a different, service-dependent handover behavior of the mobile terminal, whereas known methods treat all the services of a mobile terminal the same. For example, if the user has simultaneously activated a delay-sensitive service and another service in the form of a file transfer, then either the two services would be interrupted without using the method according to the invention or a handover would be performed for both services.
- the delay-sensitive service it is possible for the delay-sensitive service to change the access technology in the event of disruptions of the communication connection, while the Service in the form of file transfer can delay the handover or even can not perform.
- the third concrete example is the case of a user who has activated several services (often referred to as "sessions" depending on the particular service) and leaves the coverage of the wireless communication network used by him Thus, certain services may be stopped, while other services may continue after a successful handover with an unchanged IP (Internet Protocol) address (for example, using the Mobile IP communication protocol) Handover will continue using a new IP address.
- IP Internet Protocol
- the method according to the invention makes it possible to specify exactly how the mobility management should react, depending on the service and available access technologies, via the rules defined in the decision device 11.
- a personal profile of the user can provide, for example, that for a handover the communication protocol Mobile IP should be used if no other rule for the corresponding service exists.
- the individual choice of service for each type of change avoids unnecessary costs and inferior communication link quality that could result if all services were treated equally. For example, it usually makes little sense for the sur- to use Mobile IP on the Internet, since such a service is often used only for a short time.
- chat session The last concrete application example is the case of a user of a mobile terminal who, when leaving a city with WLAN coverage, has stopped a service in the form of a chat session ("chat session") after having arrived in another city
- the chat session is resumed preferably by means of the communication protocol SIP (Session Initiation Protocol) on the session layer, ie in this case the communication protocol L5 shown in FIG. 1 corresponds to the SIP protocol.
- SIP Session Initiation Protocol
- the method according to the invention makes it possible to configure the decision device 11 by means of rules in such a way that the chat session is automatically stopped when leaving the WLAN and is automatically continued by means of the SIP protocol once a new WLAN signal has been detected in the other city.
- This offers the advantage that the resumption of the chat session takes place automatically when the area of a new WLAN is reached, and is further specified in the rules, using which mobility mechanism the resumption of the chat session should preferably take place.
- a service within the meaning of the present application does not necessarily have to comprise a complete application from the user's point of view.
- the decision-making device 11 to decide for a video call in progress if the transmission quality deteriorates that the one service in the form of the Video transmission is replaced by a still image or aborted, while the other service is continued unchanged in the form of voice transmission.
- FIG. 2 shows a schematic sketch of an embodiment of the mobile terminal according to the invention. Shown is a mobile terminal 20 which has a decision device 21 and is designed to use at least one service of a communication network using a protocol stack constructed from a communication protocol or from a plurality of communication protocols. For example, a service already exists when the mobile terminal has logged into a communication network and is thus ready to receive data, for example.
- the di-e-decision device 21 has means for receiving 22 decision-relevant event data of at least one communication protocol.
- the means for receiving 22 decision-relevant event data are connected to analysis means 23 for evaluating the decision-relevant event data. After a corresponding evaluation, a data transmission to decision-making means 24 for the individual decision for the at least one service is made, if any change is to be made and, if appropriate, for deciding which type of change is to be made using which communication protocol or communication protocols.
- the decision means 24 of the decision device 21 are furthermore connected to a memory device 26 for storing programmable or configurable rules controlling the decision. From the storage device 26, the decision-making means 24 can fulfill all the rules or the conditions only read out a required proportion of the rules from the respective situation and use these rules to decide whether a change should be made and, if so, which communication protocol should be used.
- the decision means 24 are connected to the feedback of a possible decision on a change with means for signaling 25 of the change to the relevant communication protocol or the relevant communication protocols.
- FIG. 2 can also be viewed in such a way that, instead of an exemplary embodiment of the mobile terminal 20 according to the invention, an embodiment of the network node according to the invention is shown.
- the module 20 would represent the network node with a decision device 21, which has the means already described above.
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/DE2005/001946 WO2007048364A1 (de) | 2005-10-26 | 2005-10-26 | Verfahren zum betreiben eines mobilen endgerätes in einem kommunikationsnetz, mobiles endgerät und netzknoten |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1943775A1 true EP1943775A1 (de) | 2008-07-16 |
Family
ID=36000793
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05809871A Withdrawn EP1943775A1 (de) | 2005-10-26 | 2005-10-26 | Verfahren zum betreiben eines mobilen endgerätes in einem kommunikationsnetz, mobiles endgerät und netzknoten |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1943775A1 (de) |
DE (1) | DE112005003804A5 (de) |
WO (1) | WO2007048364A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100956314B1 (ko) | 2007-11-19 | 2010-05-10 | 한국전자통신연구원 | 이종 액세스 시스템간의 핸드오버를 위한 프로토콜 변환기및 프로토콜 변환 방법 |
FR2925810A1 (fr) * | 2007-12-19 | 2009-06-26 | France Telecom | Procede de communicatin entre un terminal et un reseau de communication |
US20130294283A1 (en) * | 2010-12-03 | 2013-11-07 | Nokia Corporation | Facilitating device-to-device communication |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7400600B2 (en) * | 2003-06-30 | 2008-07-15 | Lucent Technologies Inc. | Method of transport provision for a service to a user |
EP1665853A1 (de) * | 2003-09-12 | 2006-06-07 | NTT DoCoMo Inc. | Auswahl eines zielnetzwerkes für einen handover aus einer mehrzahl von drahtlosen netzwerken |
-
2005
- 2005-10-26 WO PCT/DE2005/001946 patent/WO2007048364A1/de active Application Filing
- 2005-10-26 DE DE112005003804T patent/DE112005003804A5/de not_active Withdrawn
- 2005-10-26 EP EP05809871A patent/EP1943775A1/de not_active Withdrawn
Non-Patent Citations (1)
Title |
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See references of WO2007048364A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2007048364A1 (de) | 2007-05-03 |
DE112005003804A5 (de) | 2008-09-25 |
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