Telecommunications – Radiotelephone system – Usage measurement
Reexamination Certificate
2000-08-02
2003-08-19
Maung, Nay (Department: 2684)
Telecommunications
Radiotelephone system
Usage measurement
C455S414200, C455S551000, C379S114020, C379S144010
Reexamination Certificate
active
06609000
ABSTRACT:
BACKGROUND OF THE INVENTION
The invention relates to a method of creating an address directory from address data of subscribers in a telecommunications network, wherein the address data comprise a subscriber identification and a position identification allocated to the subscriber.
SUMMARY OF THE INVENTION
An address directory of the kind under discussion is known, for example, in the form of a conventional telephone directory. In this instance, the subscriber identification is formed by the name of the person having a telephone connection, and the position identification allocated to the subscriber by the telephone number. The position allocation with respect to the telephone number results, roughly from assigning the subscribers to predetermined area code zones, and in greater detail from the initial digits of the telephone number, which reflect an association to certain stationary exchanges. Thus, an assignment of the subscribers to a certain location and, with that, a position identification exist through the telephone number of the subscriber.
In the following, the invention is described by the example of creating an address directory for a mobile radio network. In particular, the network is Applicant's mobile radio network disclosed in German Application 195 35 021.9. This mobile radio network consists of individual mobile radio sets, which serve both as a terminal and as a relay.
Contrary to Applicant's mobile radio network described in its German Application 195 35 021.9, mobile radio networks are currently in use, which comprise stationary radio equipment in the form of relay stations. These are, for example, mobile radio networks known as C1, D1, D2, and E-plus networks. In this instance, the radio link is established by means of an external switching method within the scope of an external radio network management. In these mobile radio networks, the localization of the network subscribers and the establishment of the link between the network subscribers occur by means of the central switching equipment.
When a radio link is established, the relay stations play the fundamental part, since they are in a constant reciprocal contact with the network subscribers via a division of the radio network area into individual network cells. Thus, the respective relay station always knows the location of the network subscriber by its response to the relay station and furthermore to the network control center.
When a radio link is established between two network subscribers, the network subscribers are initially localized by means of the central switching method. Subsequently, the radio link is computed or determined between the network subscribers and then offered. The preliminary computation or determination of the communication path via possible relay links is named “routing.”
The known methods operate between the mobile radio sets and the stationary relay stations of the respective network cells of the known radio networks. In the known radio networks, it thus matters that externally and centrally controlled methods be applied, which are used by an external operator station—for example, a central operating computer—outside of the individual mobile radio sets or radio terminals.
The known method of establishing a radio link within the known radio networks is problematic, in that it always requires stationary transmission relays or relay stations for establishing a radio link. From that, it follows that it is always necessary to build up first a surface-covering network of stationary relay stations, when a radio network of the known kind is established or newly set up. This considerably reduces the flexibility of a network system with respect to a new implementation.
In the mobile or relay radio network disclosed in German Application 195 35 021.9, the individual network subscribers are allocated an individual, location-dependent position identification for establishing a radio link even without stationary relay stations, so that the position of all network subscribers relative to one another is defined.
The determined position identification of the network subscribers relative to one another enables a stepwise establishment of a radio link from network subscriber to network subscriber. The provision of separate stationary relay stations is no longer needed. To establish a radio network, a source subscriber need to know only its own position identification and the position identification of the destination subscriber. The radio link is then established via further network subscribers between the source subscriber and the destination subscriber, which-due to their knowledge of their own position identification, are able to retransmit a radio signal that is transmitted from the source subscriber, in the direction toward the destination subscriber. The allocation of a position identification makes it possible to connect the network subscribers in the relay radio network, addressed as a function of location and direction and directed to the destination.
In the method of establishing a radio link, localization of the network subscriber and determination of the radio path between the network subscribers are not exactly performed by means of stationary relay stations and determined radio network cells. When establishing the radio link, the direction of the radio path to the desired destination subscriber is tendentiously predetermined in terms of direction via the stepwise determination of the successive relay radio paths via further network subscribers. While the radio link is established or offered, the radio link is not yet definitely determined up to the determination of the last stage of the radio path. From that, it may follow that possibly a plurality relay radio paths are simultaneously selected, and that a multiway propagation occurs, or a plurality of parallel radio links are established.
As regards a particularly simple allocation of position identifications, it would be possible to determine the position relative to radio-signal-emitting radio signalers with a predeterminable location. To this end, it would be possible to provide at least three radio signalers. The radio signalers could then emit the radio signals at certain times or after certain time intervals. The receipt of the radio signals from the predeterminable locations makes it possible to determine in a simple manner the position of the receiving network subscriber relative to the radio signalers. This enables a clear position determination and a clear allocation of a position identification.
In the presence of, for example, three radio signalers, the radio signal of the first radio signaler could arrive, taking into account relay delays, at the particular network subscriber after 1 second, the radio signal of the second radio signaler after 3 seconds, and the radio signal of the third radio signaler after 5 seconds. From that, it would be possible to generate a position identification of 1-3-5.
A further possibility of generating a position identification could be derived from increasing a counted value dependent on the number of transmissions, or from increasing a counting argument within the radio signal. In other words, during each transmission of the respective radio signal, a numerical value is increased, for example, by 1. In the presence of, for example, three radio signalers, a position identification could consist of the respective number of transmissions of the particular radio signal, as follows. For example, once the first radio signal is through with three transmissions, the second radio signal with ten transmissions, and the third radio signal with twenty transmissions, a position identification of 3-10-20 would be possible. With that, it would be possible that during the retransmission in the radio network, the radio signals of the radio signalers undergo a location-dependent and/or direction-dependent change of counting arguments, which contain the radio signals, by a continued counting by the respective transmitters. In other words, a location-dependent and direction dependent differe
Alston & Bird LLP
IP2H AG
Maung Nay
Orgad Edan
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