DE102008029376A1 - Telecommunication system providing method for use in building, involves limiting transmission power such that reception is ensured when transmission-/reception device is provided in field area of another transmission-/reception device - Google Patents

Abstract

The method involves forming communication-capable partnership of telecommunication systems between transmission-/reception devices (M1-M3) e.g. base stations (B) and mobile parts, after preparing for application. Communication such as application specific communication, is initiated between the transmission-/reception devices. Transmission power is temporarily limited with respect to the communication such that reception is ensured when one transmission-/reception device is provided in a near field area of another transmission-/reception device. Independent claims are also included for the following: (1) a base station provided for wireless telecommunication (2) a mobile part for wireless telecommunication.

Description

The The invention relates to a method for providing a cordless Telecommunication system according to the generic term of claim 1, a handset for providing a cordless telecommunication system according to the preamble of claim 9 and a base station for providing a cordless telecommunications system according to the preamble of claim 7.

telecommunications systems for wireless telecommunications, each consisting of at least one base station and at least one commonly battery powered Handset are, for example, cordless phones with a Cordless base station and integrated or separate battery charger as well as with at least one cordless handset that you can talk to about short distances - usually within one Apartment or house - can make mobile calls over the radio. The cordless base station provides in such telecommunication systems In addition, usually a coupling to a public or private telephone network.

The at present, at least in Europe, the most widely used protocol, on which such cordless telecommunication systems are based is the DECT protocol (DECT: Digital European Cordless Telephone).

In order to one with such consisting of two separate devices - the Cordless Base Station and Cordless Handset - Cordless Telecommunication Systems can also operate wireless mobile telecommunications, the both devices together as mutual communication partners be made known. This happens because of the cordless handset the cordless base station is registered or logged in. First after such a registration can talk about the cordless base station is routed to and from the cordless handset become.

These Formation of a unit of cordless handset and cordless base station On the one hand, it is necessary for the radio data to be addressed the cordless handset or sent to the cordless base station be and thus at all led discussions and, on the other hand, important to having a cordless handset only on the intended for him cordless base station Can build connections, so do not have a stranger Cordless Base Station Unauthorized Telephone Calls be guided and thus telephone costs for give a wrong telephone connection.

Either during such a registration procedure as well as in advance the logon procedure, to establish logon readiness the user of the cordless telecommunications system usually to act manually. For example, for the registration procedure may be provided in a predetermined order both the base station and the handset by manual Actions ready to log in, a PIN (Personal Identification Number) and / or other inputs available to execute standing keys within certain time limits.

These User actions are partial easy to use, allowing manufacturers with pairwise deployment of base station and handset for such cordless telecommunications systems the registration procedure often already manufacturer Delivery of the cordless telecommunications systems during perform the manufacturing process. This will indeed the ease of use for the buyer such Cordless telecommunications systems improved, but increased but thereby the effort in the production and thus also the manufacturing costs.

In order to be able to do without the pairwise deployment, and still be able to do without operation-unfriendly operating steps, it is from the WO 03/003702 A1 for registering battery-operated handsets to base stations with a battery charging device, the registration readiness between the handset to be registered and the base station automatically establish without the user of the telecommunication system needs to perform the measures described above.

This is achieved by the readiness to log in the battery-powered handset at the base station with battery charger by querying the charging contacts of the base station, whether a contact between the handset and the base station is initiated, and then the login procedure as above the air interface of the telecommunication system expires.

It object of the invention is an alternative user interaction Method for forming a telecommunication system from handset and base station, as well as a handset and a base station that implement this method.

This object is achieved by a method having the features of patent claim 1, a base station having the features of patent claim 7, as well as a handset with the Merkma len of claim 9.

advantageous Further developments and refinements of the invention are specified in the subclaims.

at the method according to the invention for providing a telecommunication system for wireline telecommunications, The telecommunication system includes a radio service area providing first transmitting / receiving device and at least one the radio coverage area using second transceiver. After making ready to sign in to Forming a communication capable partnership of the telecommunication system between the first transmitting / receiving device and the second transmitting / receiving device a communication for registering the transceivers between the first transmitting / receiving device and the second transmitting / receiving device initiated. Furthermore, at least during the communication to log in the transmission power for transmissions in the context of communication at least temporarily so limited that Receiving in the context of communication only then guaranteed is when the second transceiver in the near field area the first transmitting / receiving device is located.

The first transmitting / receiving device is preferably a base station, the second transmitting / receiving device, a handset, the radio - in particular after the DECT procedure - can communicate with each other. The base station is preferably a transition device, which preferably provides a coupling to a wired telephone network. In addition, there are other pairs of transceivers conceivable that need to make each other known before they can provide a desired service.

The inventive method allows it just that pairs of first and second transceiver to merge into a telecommunication system can be in direct proximity to each other. Thus, it can be ruled out that there is another transmitting / receiving device additionally or alternatively to the second transmitting / receiving device the first transmitting / receiving device logs and thus undesirably Component of the telecommunication system with the first transmitting / receiving device becomes.

The Method uses a signal attenuation, the communication in particular when passing through house walls or other solids as well - though to a lesser extent - in transmission experiences through the air. While the damping Although it can act on all signals no matter what intensity be achieved with limited transmission power targeted by that one between a sender and a receiver House wall a transmitted signal is so subdued that signal strength when reaching the receiver reduced below the minimum reception sensitivity is so that the receiver does not receive the incoming signal recognizes.

This Effect can be exploited so that in a particular simple embodiment, the communication a message from one of the first transmitting / receiving device to the second transmitting / receiving device includes. The purpose of this message is that the first transceiver at the second transmitting / receiving device in the sense of a registration makes known, so later incoming and outgoing connections be established between the two transmitting / receiving devices can. Will now this message according to the invention with transmitted limited transmission power, it can be achieved that due to the damping only in close proximity to the first transmitting / receiving device, for example in a radius of about 30 centimeters, a receipt of the message by the second Transmitting / receiving device is possible. The value of 30 Centimeters should here only the size of the near field area However, depending on the area of application, it may refer to others Values can be configured. Now is the mobile second Transceiver within a radius of 30 centimeters around the first transmitting / receiving device and is first mentioned in Willingness to receive the message, it can receive the message and process, in particular to a partnership with the first transceiver to establish.

One advantage of the method according to the invention is that the second transceiver can already be set in readiness for delivery by the manufacturer to receive the message, so that a user who acquires a first and a second transceiver and in operation No further special user actions need to be performed to complete the process of providing the partnership between the two transceivers. Preferably, the first and the second transceiver are configured such that upon initial power on both transceivers - after delivery of the transceiver from the manufacturer or after an explicitly performed reset at least one of the two transmitting / receiving devices - immediately in go over a mode in which the method steps according to the invention for running a telecommunication system.

One Another advantage is that due to the limited transmission power A user is specifically made possible the pair first transmitting / receiving device and second transmitting / receiving device to define by both at the initial power on in the immediate Arranges close to each other. Other user actions on the first and / or second transmitting / receiving device are not this necessary.

One Protection against unwanted entry of further Transceiver devices by input of key codes or similar methods is not necessary, since it is assumed that by the limited Transmission power only a small radio area is covered, which is located in the immediate vicinity of the first transmitting / receiving device and thus the first and the second transmitting / receiving device are in a sphere of action, which is only by the serving Person is controlled. An unrecognized intrusion of another Transceiver without knowledge of the operator is therefore not possible. In particular, an unintentional Booking of further transmitting / receiving devices, which are located in other rooms or other adjoining apartments are not possible because the first transmitting / receiving device transmitted communication due to the signal attenuation is not received at the other transceiver devices.

The inventive method thus allows advantageously to a pre-configuration of transceiver pairs to dispense with as provided in known systems, since the Pair formation only by approximation of the two transmitting / receiving devices when sending a communication with limited transmission power happens. Nevertheless, the procedure is safe against signing up unwanted transmitting / receiving devices, since the transmission power such is limited, that these unwanted transmitting / receiving devices are positioned outside the covered radio range. Unwanted transceivers located within the covered radio range would be against the user visible, so this in this case manual action against an unwanted log in can make.

A exact positioning of the second transmitting / receiving device z. B. provided in a for the second transmitting / receiving device Charging the first transceiver and a query Contacts are also not required. The second transmitting / receiving device only has to be in the near field area of the first transceiver so that the inventive method is successfully executed.

In a further development of the method includes communication in addition the above message also a response message from the second Transceiver back to the first transceiver. Again, the transmission power can be limited so that a reception at the first transmitting / receiving device only possible is when the second transceiver in the near field area the first transmitting / receiving device is positioned. To this Way, the two transceivers can sign each other.

In a further advantageous embodiment of the method can at least one of the two transmitting / receiving devices a respective Transmit power continuously or between discrete values, wherein at least two transmission power values are provided between which can be switched. Limiting the transmission power can be done dynamically or reduced to a pre-configured transmit power value, the manufacturer is considered ideal. The dynamic limiting of the transmission power can be done, for example, such that the transmission of the inventive communication with a minimum transmission power and if not confirmed within a given time from the partner transmitting / receiving device receives the transmission power is increased and the transmission attempt again is started. This can then cyclically until reaching a predetermined upper limit of the transmission power can be repeated.

Under Limiting the transmission power within the meaning of the invention is in particular to understand reducing the transmission power, the maximum transmission power can be used as comparison value. Furthermore, however, can Under limiting also an increase in a transmission power understood if the lowest possible transmission power is assumed and then to carry out the method, the transmission power is increased. However, both approaches are common, that the transmission power in the context of the invention Procedure well below a "normal" transmission power a later Nutzbetriebs of the telecommunication system is set.

Furthermore, it can be provided to carry out only parts of the registration procedure with limited transmission power. In addition, it can be provided that only one of the two transmitting / receiving devices transmits with limited transmission power or alternatively transmit both transceivers with limited transmit power.

The The present invention and its developments will be described below in the context of an embodiment with reference to figures explained in more detail.

This show in more schematic Presentation of the

1 a base station and a plurality of handsets arranged in a building, and

2 a base station and a handset and a message traffic between them.

In 1 1 is a schematic plan view of a building part G of a building, with a base station B being distributed over the floor plan as a first transmitting / receiving device, a first mobile part M1 as a second transmitting / receiving device according to the invention, and further mobile parts M2 and M3 being further transmitting according to the invention. / Receiving devices are arranged.

The Base station B is configured such that together they one or several of the transceivers M1, M2, M3 a telecommunication system for wireline telecommunications. Especially including a telecommunications system for cordless phone calls to understand where a digital or analog transmission between a base station and a handset over a Radio interface takes place and the telecommunication system itself to a public or private telecommunications network how a single phone behaves at an extension port. The base station represents the transition between a Radio transmission and a usually corded transmission in the public or private telecommunications network, so that telephone connections between a terminal of the Telecommunications network and the handset can be operated. A transmission in the public telecommunications network takes place, for example, according to the ISDN standard (ISDN: integrated services digital network). The radio transmission takes place preferably according to the DECT method.

The Base station B represents an antenna of the base station B surrounding Radio coverage area that defines the geographic area, in which a handset is in radio contact with the base station B. can. Handsets that are outside the radio coverage area On the other hand, there is no radio contact with the base station Build or maintain B In usual DECT systems is the maximum specified radio coverage area about 300 meters around the base station B, if there are no obstacles in this Area are present. Inside buildings becomes common as a radio coverage area a guideline value of approx. 80 meters as maximum Indicate distance to base station B, this being the structural Conditions, the transmission power and the reception sensitivity the base station B and the handset is dependent.

in the present embodiment is about In addition, provided that at least the base station B, possibly however, the first handset M1 also has the option of the transmission power for transmissions via to vary the radio interface. Thus, allows be that the theoretically possible radio coverage area is reduced so that the transmission power just enough is to use a handset in its present geographic Position to communicate. Reducing the transmission power of a maximum value to a value just for a successful communication is necessary, generally has the advantage that on the one hand the radiation exposure for persons in the radio coverage area is reduced and on the other hand, the required supply is reduced, so that prolongs the battery life of the handsets and the power consumption of the base station B can be reduced.

In 1 two different radio coverage areas are indicated by dashed lines. The first radio coverage area FB1 represents, for example, a radio coverage area at a higher or highest transmission power of the base station B. The first radio coverage area FB1 extends in the building not only in the room in which the base station B is arranged, but also extends when also due to attenuation by the walls of the building part G only with a lower range, in the neighboring rooms. All three handsets M1, M2, M3 are in the present embodiment positioned so that they are located in the first radio coverage area FB1, in particular the third handset M3, that is in a space adjacent to the base station B, so that radio transmissions between the base station B and the third handset M3 is damped by a wall.

The second radio coverage area FB2 represents, for example, a radio coverage area at a lower or at a minimum transmission power of the base station B. The data in the 1 indicated radio coverage is significantly lower than that of the first radio coverage area FB1. In particular, only a small part of the space in which the base station B is located, covered. In addition, it is assumed that the attenuation for the low transmission power through one of the walls of the building part G is so high that the second radio supply area FB2 does not extend into the adjacent room but already within the wall below a receiving sensitivity of the mobile parts M1, M2, M3 drops.

It Let it be assumed that only the first handset M1, the positioned in close proximity to base station B, within the second radio coverage area FB2. The means that the second and the third handset M2 and M3 through the base station B emitted messages and transmissions can not receive successfully and therefore not capture and process.

initial situation for the embodiment is that none of Handset M1, M2, M3 are registered with the base station B and thus still no communication-capable partnership within the Telecommunication system exists. Under the communication capable Partnership is about to understand that the base station B and a handset registered each other as a communication partner have so that from the telecommunications network at the base station B incoming transmissions to the registered handset be forwarded and so that initiated by the handset transmissions be further processed and mediated by the base station B.

in the Present embodiment is assumed that a Users register the first handset M1 at the base station B. would like to.

Around to be registered as a communication partner and to enter into a communicable partnership, need the base station B and the affected handset - ie handset M1 - both on standby to enter into such a partnership. Not further in The figures show the process steps, such as readiness to log in is activated. On delivery of newly produced devices a base station B and / or a mobile part, this can for example already done by the manufacturer so that the first time Turn on the affected device by the customer for the affected device is ready for a Sign up to form a communicative partnership of the telecommunication system between the affected base station and the affected handset is made.

in the It is assumed below that for the base station B and at least for the handset M1 readiness for a sign up to form the communicable partnership already made.

Possibly initiated by a user action or merely by applying an operating voltage to the base station B, the base station B initiates a first logon request message REQ1 - illustrated in FIG 2 - Sent in the environment of the base station B and in particular its antenna. This transmission of the first registration request message REQ1 can be repeated if within a defined period of time no confirmation message from a mobile unit is received by the base station B in order to confirm receipt of the first registration request message REQ1. The log-on request message REQ1 is a message for mutual registration of the base station B with a handset and is thus part of the inventive communication for logging.

The first registration request message REQ1 is transmitted in the present embodiment with a transmission power significantly reduced compared to the maximum transmission power and also compared to a conventional transmission power used in the context of telephone conversations, so that the radio coverage area covered by the first registration request message REQ1 1 as radio range FB2 is illustrated. All handsets positioned within radio range FB2 may receive this first logon request message REQ1.

Handsets, who are not in a readiness to log in Preferably, the first login request message REQ1 is ignored. Alternatively, they send a negative receipt.

in the present embodiment is the first handset M1 is the only handset within the radio range FB2 located. The first login request message REQ1 will be replaced by the first Handset M1 received, detected and processed. As is the handset M1 is in readiness to log in, by the handset M1, the base station B as belonging to the handset M1 Base station B registered.

The Method is advantageous because the transmission power the base station B for transmission to this Way can be limited so that only that for the Registration provided handset the first login request message REQ1 can receive and not another handset, in particular the second handset M2 or the third handset M3.

Preferably, by the first handset M1 a confirmation message ACK - indicated in 2 through a stylized flash - transmitted back to base station B so that it can complete the successful log on. This confirmation message ACK is thus like the first login request message REQ1 part of the communication according to the invention for logging, wherein the confirmation message ACK can be sent with such a low transmission power that only the base station B can receive the confirmation message ACK.

For mutual registration may be provided as part of the confirmation message ACK or in addition to the confirmation message ACK a sign on the handset M1 at the base station B, so that after successful transfer both institutions have made each other known. This is in 2 indicated by a second registration request message REQ2, which is sent by the first handset M1 and is also part of the communication according to the invention. The transmission of the second logon request message REQ2 can be initiated by recognizing the input of the first logon request message REQ1 by the first handset M1 or by first turning on the first handset M1 after it has been delivered to the customer. Furthermore, as already indicated, the second logon request message REQ2 can be part of the acknowledgment message ACK.

Becomes now the second login request message REQ2 at the base station B received and processed, the logon process of the first Handset M1 are completed at the base station B. The first Handset M1 and base station B thus have in both directions of transmission registered each other and both institutions can thus the state of readiness to log in - possibly after Expiration of a timer - left. Subsequently Both can be used for the intended purpose Nutzbetrieb as a telecommunications system, in particular for performing telephone calls to or from the first handset M1, be used.

Consists now a login process of several messages between the base station B and the first handset M1, it is sufficient if according to the invention limited for one of the messages, the transmission power so is that only the base station B or the first handset M1 - depending on the direction of communication - the transmitted Message can receive. However, it can also be provided that for several or all of the messages in the registration process, the transmission power is reduced.

The The aforementioned messages are for illustration purposes only the course of the process according to the invention. Depending on the technology used, for example DECT, the message sequence however, be and must be predetermined by the standard to be followed then be implemented according to the respective defined standards. Also, the parameters to be transmitted in the messages can then be predetermined. Usually, however, are likely the handset M1 or the base station B uniquely specifying Identification values and / or communication addresses are transmitted, so that later in Nutzbetrieb a clear assignment of base station B and handset M1 is enabled and further in the first radio range FB1 arranged handsets and / or Base stations the Nutzbetrieb between the base station B and the Do not disturb handset M1.

above the readiness to log in has been activated so that a manufacturer already at delivery of the base station B and / or the handset M1 configures the devices so that they turn on immediately go into this standby mode. By the Switching on is followed by an initial procedure which is the respective one Set institution ready to log in. Beside this However, such an initial procedure can also switch on be provided a reset of the device or after performing a intended user action.

The Limiting the transmission power can be made such that the transmission power only one -. B. by the manufacturer - firmly preset transmit power value is lowered. Alternatively, you can the transmit power is set to the lowest transmit power value and thus the first login request message REQ1 be sent out. If the base station B then receives no response, so the transmission power value can be increased and one the first login request message REQ1 are sent out. This can be up to a given for a sign up process as maximum threshold to be regarded.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• WO 03/003702 A1 [0008]

Claims (10)

Method for providing a telecommunication system for wireline telecommunications, the telecommunication system a first providing a radio coverage area (FB1, FB2) Transceiver (B) and at least one of the radio coverage area Comprises (FB1, FB2) second transmitting / receiving device (M1), in which after establishing a readiness for a Sign up to form a communicative partnership of the telecommunication system between the first transmitting / receiving device (B) and the second transceiver (M1) - one Communication (REQ1, ACK, REQ2) for registering the transceivers between the first transceiver (B) and the second Transmitting / receiving device (M1) is initiated, - at least during communication (REQ1, ACK, REQ2) to log in the transmission power for transmissions in the frame the communication (REQ1, ACK, REQ2) at least temporarily so limited is that receiving in the context of communication (REQ1, ACK, REQ2) is only guaranteed if the second Transceiver device (M1) in the near field region of the first transceiver device (B) is located. Method according to claim 1, characterized in that that the transmission power of at least one of the two transmitting / receiving devices (B, M1) is changeable. Method according to one of the preceding claims, characterized in that triggered by the receiving in the context of communication (REQ1) by the receiving transceiver (M1) in the context of communication for confirmation feedback (ACK, REQ2) to the transceiver initiating the communication (REQ1) (B) is sent. Method according to one of the preceding claims, characterized in that the readiness to log in the frame an initial procedure is set up. Method according to one of the preceding claims, characterized in that limiting the transmission power by Send with a predetermined for signing up Transmission power is performed. Method according to one of the preceding claims, characterized in that the transmissions (REQ1, ACK, REQ2) according to the DECT standard. Base station (B) of a telecommunication system for wireline telecommunications, in which the telecommunication system the base station providing a radio coverage area (FB1, FB2) (B) and at least one using the radio coverage area (FB1, FB2) Handset (M1) comprises, With a) Means for production a willingness to sign up to form a communicable partnership of the telecommunication system between the mobile part (M1) and the Base station (B), b) a transmitting / receiving unit, the like is designed that after making a readiness for a Log In A communication (REQ1, ACK, REQ2) for Log in between the base station and the handset is initiated, - while the communication (REQ1, ACK, REQ2) to register the transmission power for the communication (REQ1, ACK, REQ2) at least temporarily is limited so that receiving in the context of communication (REQ1, ACK, REQ2) is only guaranteed if the handset (M1) is located in the near field area of the base station (B). Base station (B) according to claim 7, characterized in that the base station (B) is designed according to the DECT standard. Handset (M1) of a telecommunication system for wireline telecommunications in which the telecommunication system a base station providing a radio coverage area (FB1, FB2) (B) and at least one using the radio coverage area (FB1, FB2) Handset (M1) comprises, With a) Means for production a willingness to sign up to form a communicable partnership of the telecommunication system between the mobile part (M1) and the Base station (B), b) a transmitting / receiving unit, the like is designed that after making a readiness for a Log In A communication (REQ1, ACK, REQ2) for Log in between the base station (B) and the handset (M) initiated becomes, During communication (REQ1, ACK, REQ2) to register the transmission power for communication (REQ1, ACK, REQ2) is at least temporarily limited such that Receiving the communication (REQ1, ACK, REQ2) is only guaranteed when the handset (M) in the near field area of the base station (B) located. Handset (M) according to claim 9, characterized in that the handset (M) is designed according to the DECT standard.