Method for performing control measures in packet telecommunication networks and in data transfer networks

FIELD: control technologies in packet telecommunication networks and data transfer networks.

SUBSTANCE: method is based on shortening down to minimal separate list (INS) of number of clients subject to control due to maximal statistical relations of data exchange inside network node in comparison to number of analogical network nodes in whole network, and also maximal productiveness of network node and during control input data packets are compared only in portion of address of incoming data packets with minimal separate list of number of clients subject to control, while received minimal separate list of number frequency clients subject to control is used for verification of each passing data packet.

EFFECT: decreased work amount of processor providing control over communication participants, while main problem is large number of relatively short data packets, which is necessary to compare to full, related to whole network, list of client inputs subject for control, and productiveness of computing devices connected thereto, which is necessary in each node for realization of this problem.

4 cl, 2 dwg

 

The invention relates to a method for implementation of control measures in a batch of telecommunication networks and data networks.

A principled way of implementing control measures for subscribers in telecommunication networks is described in ETSI GSM 03.33 (Tdoc SMG10 98 D047). In Germany control over telecommunications services shall be in accordance with applicable laws.

Batch telecommunications networks are, for example, cellular mobile radio in accordance with the GSM standard with the transfer method GPRS ETSI GSM 03.60). In contrast undertaken by wire services in the network are transmitted separately, the individual data packets in accordance with the TCP/IP Protocol (in accordance with standard engineering group on Internet IETF RFC 793/RFC 791), so there is no regular relationship between the data channel and the subscriber connection. The same method is used on the public Internet. There having the same problem.

When running under the laws of control functions associated with this type of transmission special problems. The transmission channels are used by many different clients with relatively short data packets.

Therefore, when performing control functions must all packets of data to compare with the list of active control of subscribers with the goals of the updated filter (copy) those packages, which must be attributed to subject to control subscribers in the direction of transmission or reception.

In accordance with these costs increase according to the increasing bandwidth (more packets per unit time), and with the increasing number of cases of control (a longer list that you want to check for each package). Participating in the connection components (nodes, connections, routers, gateways, and so on) is equipped with a microprocessor-based systems, and their capacity very significantly reduced by performing technical tasks of control. This affects the cost, because as more monitoring is necessary to install more and more powerful devices than is necessary for task switching.

Since control problems relate to the requirements of the legislation, these loads must be held and financially provide for themselves, the owners of the network.

Therefore, from a financial point of view, it would be highly preferable to have the possibility of reducing the amount of processing that you want to select in the connection node to perform the prescribed tasks of control (lawful interception).

The basis for this invention is the task of creating a method on the basis of which it is possible to realize the reduction of the computational cost (CPU, remember what their devices systems that are required to perform the legal functions of the control participants due to packet telecommunication networks and data networks to save money on hardware and software investments.

This task is solved in that a method of controlling packet data in a packet telecommunication networks and data networks, according to the invention, is that

the control center contains the entire network a single list of numbers subject to control subscribers, these subscribers which transmit and distribute to all network nodes of a telecommunication network or a packet data network,

in network nodes perform the reduction recorded in referring to the entire network a single list (ISNWL) number subject to control subscribers in a separate list (ISNL) by exception, subject to the control of the subscribers who do not participate in the exchange of data in a given time in a given network node,

perform additional reduction or alternative reduction to the minimum of the individual list (INS) number subject to control subscribers by maximizing the statistical correlation of data across a network node in comparison with similar number of nodes in the entire network, as well as the maximum performance of the network node and the control entering the s data packets are compared only in terms of addresses of incoming data packets with minimal separate list (INS) number subject to control subscribers.

Preferably, when a network node reduction single list (ISNWL) number subject to control subscribers in a separate list (ISNL) ensure, through the filter (NMF), and the filtering device is connected to its own data banks network node or switching technical tables and/or with the appropriate network devices to automatically detect those subscribers in a single list (ISNWL), which for technical reasons or because of the lack of current context exclude from a single list (ISNWL) number subject to control subscribers while maintaining reliability. Not less preferably, when an additional reduction of a single list (ISNWL) number subject to control subscribers or a separate network node list (ISNL) provide for the expense of filtering, taking into account the number of similar network nodes, as well as the performance of a given network node, the obtained minimum separate list (INS) number subject to control subscribers use to verify each passing data packet, the probability that subject to the control data packet is not detected, small.

Preferably, at minimum separate list (INS), which arose due to the selection of subscribers who have an active attitude to the packet data when the stage is leitlinie subscribers also have an active attitude to the packet data, compared to the General list (ISNWL) number subject to control subscribers, since these subscribers at the time of activation, by definition, not present at minimum separate list (INS), and their activity on activation it is necessary to control, but this case is not critical in time, as occurs less frequently than the data packets, and optionally is associated with loss of time.

Below is the description of the invention based on possible scenarios for example GPRS in the GSM network with reference to the drawings, a represents a schematic depiction of an example of execution.

From the drawings and their descriptions follow other characteristics and advantages of the invention. In the drawings shows:

figure 1 - block diagram of a General control method for subscribers in the area of mobile telecommunication (ETSI GSM 03.33) according to the prior art;

figure 2 - block diagram of the method according to the invention.

According to the prior art function control control is the control center of the lawful interception (ADMF). There, in particular, maintains a list of subscribers (numbers)that are control functions. These data subscribers are transmitted to the network nodes in the form of numbers (in the GSM network in the form of IMSI or MSISDN), with each network node preferably receives all phone numbers, because management cannot update data is in accordance with the profile of movement of the terminals in the network.

The network nodes may experience these problems with bandwidth.

As an alternative solution instead of IMSI/MSISDN in other data networks, e.g. the Internet, to use other distinguishing characteristics of subscribers, for example, TCP (not necessarily in combination with the IP port number).

Figure 2 shows the method according to the invention, to eliminate the drawbacks of the prior art. The control center lawful intercept provides a General list of all active control functions in the network (interception list of subscribers in the network-ISNWL). These data, in whole or in alternatives, as separate data is transmitted in the relay nodes (network nodes NN) packet data network. While not mandatory filtering function (function network management - NMF) is used to reduce the size of the list. The management network is preferably an integral part of a network node or a dedicated device that serves multiple network nodes. It is connected with the network node and, if necessary, with other network devices, such as, for example, the registry key areas (HLR) to obtain criteria to automatically reduce the list.

A suitable criterion is, for example, that corresponding to the subscriber cannot use the proposed network node outp is iGO on the basis of their technical devices (there is no terminal for receiving data or the like) or on the basis of contractual provisions (no right to use data services), based on their relationship to the exchange of data (there are currently no data) or based on other criteria. Another reason may be the presence of at present a subscriber in another network zone, so that the communication does not refer to this network node.

Using these parameters, you can reduce the list ISNWL. The rest of the data remains in the network node as the list of interception subscribers node (ISNL) in the form of a database or table in the storage device and updated in accordance with the relevant state ISNWL, as well as not necessarily, other network information when the processing in the function of network management.

The remaining list can be volume is still very long, particularly if there is not a mandatory function of network management. To do this, use alternative or additional method of reducing (sublist interception node - INS).

The list is compiled by the filter function (sublist control functions - SMF) from the list ISNL or in the alternative from the list ISNWL.

Criteria for the second stage reduction are set using statistics, as well as with the performance of the corresponding node. The list ISNWL is valid for the whole country/the entire network. From the point of view of statistics within a single individual commutation the th node of the event may be distributed only to such number of subscribers, you can determine the number of similar nodes in the network. Another boundary is set computing capacity of a network node.

Added to this is the statistical fact that the number of cases of interception is small compared with the total number of subscribers. That is, the probability that a data packet has to be copied is very small.

This in turn means that for each packet with high probability it is necessary to process the whole list, because the probability that the recipient of this package is generally recorded in the list, is very small.

If all passing packets according to their addresses should be compared with the entire list of interception network, you may be required full processing power, so that none of the package inside to be keeping with the parties to the Protocol values can not be transmitted, and thereby destroyed the relationship. Therefore, in the second stage, the list is reduced to a reasonable value and support constantly up to date.

Then the incoming data packets are compared only in part of the address with a reduced list (in this case a list of the INS). If the addressee is included in the list of INS, the data must be copied if it is not, then with very high probability it can assume that we are talking about is not subject to control is acute data.

1. The method of controlling packet data in the packet telecommunicazioni networks and data networks, namely, that

the control center contains the entire network a single list of numbers subject to control subscribers, these subscribers which transmit and distribute to all network nodes of a telecommunication network or a packet data network,

in network nodes perform the reduction recorded in referring to the entire network a single list (ISNWL) number subject to control subscribers in a separate list (ISNL) by exception, subject to the control of the subscribers who do not participate in the exchange of data in a given time in a given network node,

perform additional reduction or alternative reduction to the minimum of the individual list (INS) number subject to control subscribers by maximizing the statistical correlation of data across a network node in comparison with similar number of nodes in the entire network, as well as the maximum performance of a network node and monitoring incoming data packets are compared only in terms of addresses of incoming data packets with minimal separate list (INS) number subject to control subscribers.

2. The method according to claim 1, characterized in that the network node reduction single list (ISNWL) number to be the control of subscribers in a separate list (ISNL) ensure, through the filter (NMF), moreover, the filtering device is connected to its own data banks network node or switching technical tables and/or with the appropriate network devices to automatically detect those subscribers in a single list (ISNWL), which for technical reasons or because of the lack of current context exclude from a single list (ISNWL) number subject to control subscribers while maintaining reliable operation.

3. The method according to claim 1, characterized in that the additional reduction in a single list (ISNWL) number subject to control subscribers or individual for the network node in the list provide by filtering that takes into account the number of similar network nodes, as well as the performance of a given network node, the obtained minimum separate list (INS) number subject to control subscribers use to verify each passing data packet, the probability that subject to the control data packet is not detected, small.

4. The method according to any one of claims 1 to 3, characterized in that at minimum separate list (INS), which arose due to the selection of subscribers who have an active attitude to the packet data, in cases where additional subscribers also have an active attitude to the packet data, they are compared with the General list (ISNWL) number pagliusi the control of subscribers, since these subscribers at the time of activation, by definition, not present at minimum separate list (INS), and their activity on activation it is necessary to control, but this case is not critical in time, as occurs less frequently than the data packets, and optionally is associated with loss of time.



 

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