DK162001B

DK162001B - RADIO FOR TRANSFERING INFORMATION BETWEEN PERSONS OUT OF MULTIPLE RADIO STATION COUPLES

Info

Publication number: DK162001B
Application number: DK490084A
Authority: DK
Inventors: Michael Blanschefski; Guenther Loescher
Original assignee: Bosch Gmbh Robert
Priority date: 1983-10-14
Filing date: 1984-10-12
Publication date: 1991-09-02
Also published as: ATE47776T1; DK162001C; DK490084D0; EP0137943B1; DE3480372D1; DE3337358A1; DK490084A; EP0137943A3; EP0137943A2

Abstract

1. A radio network for the transmission of information between a respective pair of several pairs of radio stations by way of a radio channel of n radio channels operated in frequency multiplex, wherein the transmitting sections of each pair of radio stations include means which transmit an individual security code before a transmission, and the receiving sections of the radio stations include means which only respond to this security code, characterised in that the radio stations (10, 11) of each pair of radio stations are designed in such a way that they stipulate and store n1 < n free radio channels (K1 ...) at least before the first time they are put into operation, that at least one station of each pair of radio stations is designed in such a way that the receiving section (15) is only switched on for predetermined testing times (tPR ) interrupted by interval times (tPA ) of equal length for the purpose of testing the n1 radio stations for their occupied state, and that the interval times are a multiple of the testing times.

Description

DK 162001 BDK 162001 B

Opfindelsen tager udgangspunkt i et radionet af den i krav 1's indledning omhandlede art.The invention is based on a radio network of the kind referred to in the preamble of claim 1.

Der kendes radionet, jf. tysk offentliggørelses-5 skrift nr. 33 01 778, i hvilke et par af radiosende- og -modtageapparater - i det følgende kaldt radiostationspar - består af en stationær radiostation og en ikke-sta-tionær radiostation. Den stationære radiostation er forbundet med telefonnettet, og den ikke-stationære radio-10 station er fortrinsvis udformet som en station, der holdes i hånden. Sådanne radionet er kendt under betegnelsen "trådløs telefon". Hver radiostation i et radioapparatpar kan over en ledig radiokanal af radionettets ialt n radiokanaler træde i forbindelse med den anden radio-15 station i det samme radiostationspar med henblik på at overføre informationer i begge retninger. I et af det tyske postvæsen planlagt radionet søger modtagedelene i et radiostationspars radiostationer først en ledig radiokanal og udsender derefter på denne en højfrek-20 vensbærebølge, som er karakteriseret ved en individuel sikringskode. Radiostationernes modtagedele reagerer kun på det egne radiostationspars sikringskode. Dermed sikres det, at de informationer, der skal overføres mellem et radiostationspar, ikke kan aflyttes af noget andet 25 radiostationspar. Modtagedelene skal altså løbende og cyklisk gentaget aftaste alle radionettets n disponible radiokanaler med henblik på at kontrollere, om der på en radiokanal foreligger en højfrekvensbærebølge, som er moduleret med den for dem bestemte individuelle sik-30 ringskode, således at de kan synkronisere sig på denne radiokanal. I det af det tyske postvæsen planlagte radionet skal der findes n = 40 radiokanaler, hvormed radionettet i og for sig vil være overdimensioneret, fordi radiotætheden i forbundsrepublikken Tyskland forelø-35 big vil være ringe, og fordi rækkevidden for informationsoverføringen mellem et radiostationspar er begrænset til maksimalt 100 m. Som følge af den rigelige dimensio-The radio network is known, cf. German Publication No. 33 01 778, in which a pair of radio transmitting and receiving apparatus - hereinafter referred to as radio station pair - consists of a stationary radio station and a non-stationary radio station. The stationary radio station is connected to the telephone network and the non-stationary radio station is preferably designed as a hand-held station. Such radio networks are known by the term "cordless telephone". Each radio station of a pair of radio apparatus may communicate over a free radio channel of the total radio stations of the radio network with the other radio station in the same radio station pair in order to transmit information in both directions. In a radio network planned by the German postal service, the receiving parts of a radio station couple's radio stations first seek a free radio channel and then transmit on it a high frequency carrier wave characterized by an individual security code. The receiving stations of the radio stations respond only to the security code of their own radio station pair. Thus, it is ensured that the information to be transmitted between a radio station pair cannot be intercepted by any other 25 radio station pairs. Thus, the receiving parts must continuously and cyclically scan all available radio channels of the radio network in order to check whether a radio channel has a high frequency carrier modulated with the individual security code for them so that they can synchronize on this radio channel. In the radio network planned by the German Post Office, there must be n = 40 radio channels, which the radio network will in itself be oversized, because the radio density in the Federal Republic of Germany will be low and because the range of information transmission between a pair of radio stations is limited to maximum 100 m. Due to the abundant dimension

DK 162001 BDK 162001 B

2 nering af radionettet forudsætter den løbende aftastning af radiokanalerne efter et for den pågældende radiostation bestemt opkald hhv. efter en ledig radiokanal således en vedvarende tilkobling af kanalstyringerne og af modtagedelene, hvorved der forbruges unødvendig megen strøm. Hertil kommer yderligere, at hvis eksempelvis en ikke-stationær radiostation vil sende på den første ledige radiokanal af de n radiokanaler, og den stationære radiostation netop aftaster den anden radiokanal, går der en fuldstændig aftastningscyklus, inden den stationære radiostation kan konstatere det til den bestemte opkald.2 of the radio network requires the continuous scanning of the radio channels after a call for the particular radio station respectively. thus, after a free radio channel, a continuous connection of the channel controls and of the receiving parts, thereby consuming unnecessarily much power. In addition, if, for example, a non-stationary radio station broadcasts on the first available radio channel of the n radio channels, and the stationary radio station just scans the second radio channel, a complete scanning cycle passes before the stationary radio station can ascertain it to the particular radio station. call.

Strømforbruget i de ikke-stationære radiostatio-' ner skal på den ene side holdes lavt, fordr disse stationer drives af genopladelige strømkilder, hvis kapacitet af hensyn til vægten er begrænset, og på den anden side ønskes en hurtig forbindelsesopbygning med henblik på at undgå unødvendige ventetider for abonnenterne.The power consumption of the non-stationary radio stations, on the one hand, must be kept low, since these stations are powered by rechargeable power sources whose capacity for weight is limited and, on the other hand, a fast connection structure is desired in order to avoid unnecessary waiting times for the subscribers.

Fordele ved opfindelsenAdvantages of the invention

Radionettet ifølge opfindelsen med de i krav 1's kendetegnende del angivne træk har den fordel, at radionettets ikke-stationære radiostationer kan nøjes med mindre strøm, hvorved ladeintervållerne for de genopladelige strømkilder i de ikke-stationære radiostationer kan forlænges betydeligt, eller strømkildernes vægt og dimensioner kan formindskes. Endvidere sker forbindelses-opbygningen hurtigere, fordi det ikke er det fuldstændige antal af disponible kanaler, der skal kontrolleres. TegningenThe radio network according to the invention with the features of the characterizing part of claim 1 has the advantage that the radio station's non-stationary radio stations can be satisfied with less power, whereby the charging intervals for the rechargeable power sources in the non-stationary radio stations can be considerably extended or the weight and dimensions of the power sources can be extended. decreases. Furthermore, the connection structure is made faster because it is not the complete number of available channels that needs to be checked. The drawing

Et udførelseseksempel ifølge opfindelsen er i det følgende forklaret nærmere under henvisning til tegningen , hvor fig. 1 viser et tidsskema over kontrol- og pausetiderne ifølge opfindelsen, og fig. 2 et blokdiagram over et radiostationspar i-følge opfindelsen.An embodiment of the invention is explained in more detail below with reference to the drawing, in which: FIG. 1 shows a time schedule of the check and pause times according to the invention, and FIG. 2 is a block diagram of a radio station pair according to the invention.

DK 162001BDK 162001B

33

Beskrivelse af opfindelsen I et radionet ifølge opfindelsen med flere radiostationspar af hver en stationær radiostation 10 (fig.Description of the Invention In a radio network according to the invention with several radio station pairs of each a stationary radio station 10 (FIG.

✓ 2) og en ikke-stationær radiostation 11 aftaler og 5 lagrer radiostationerne i hvert stationspar ud af n disponible radiokanaler i radionettet i det mindste før den første idrifttagelse n^ ledige radiokanaler, hvor n^ er et tal, der er væsentligt mindre end n.✓ 2) and a non-stationary radio station 11 agreements and 5 stores the radio stations in each station pair out of n available radio channels in the radio network at least before the first commissioning n ^ available radio channels, where n ^ is a number substantially less than n .

Derefter sker kanalkontrollen i hvert radiosta-10 tionspar kun på de n^ lagrede radiokanaler, nemlig på en sådan måde, at den stationære radiostation fortløbende kontrollerer de n^ radiokanaler, mens den ikke-sta-tionære.radiostation kun foretager kontrollen af de n^ radiokanaler med bestemte forudgivne tidsintervaller, 15 jf. fig. 1.Thereafter, the channel control in each radio station pair occurs only on the stored radio channels, namely in such a way that the stationary radio station continuously monitors the radio stations, while the non-stationary radio station only controls the radio stations. radio channels with certain predetermined time intervals, cf. First

Hvis n^ - 1 radiokanaler er optaget, træffes der en ny aftale. I regelen turde n^ = 2 radiokanaler være tilstrækkelige til informationsudvekslingen mellem et radiostationspars radiostationer. De samme n^ radio-20 kanaler kan i en hvis rumlig afstand fra dette radiostationspar aftales for et andet radiostationspar.If n ^ - 1 radio channels are recorded, a new appointment is made. As a rule, n ^ = 2 radio channels should be sufficient for the exchange of information between a radio station pair's radio stations. The same n ^ radio-20 channels can be arranged at a different spatial distance from this radio station pair for another radio station pair.

Kontrollen i den ikke-stationære radiostation med hensyn til en optaget kanal sker altså ikke som i kendte radionet for hele cyklustiden t^ , tZ2# som være 25 nødvendig til kontrol af n radiokanaler, men kun for et tidsrum tpR, som er nødvendigt til kontrol af det aftalte antal på n^ radiokanaler. Mens f.eks. kontrolvarigheden (= cyklusvarighed t_) for kontrol af n = 40 radiokanaler andrager 3000 ms, kan n^ = 2 radiokanaler 30 kontrolleres i en kontroltid tpR «150 ms. I den resterende tid (= pausetid tpA) af cyklustiden tz1, tZ2 ··· frakobles modtagedelene i de i øvrigt driftsklare ikke-stationære radiostationer. Af det i fig. 1 viste eksempel fremgår det tydeligt, at forholdet mellem pausetiden 35 tpA og kontroltiden tpR er meget stort. Modtagedelene er således frakoblet det meste af tiden, og de tilkobles kun kortvarigt til kontrol af de aftalte radiokanalerThus, the control in the non-stationary radio station with respect to a recorded channel does not occur as in the known radio network for the entire cycle time t ^, tZ2 # which is necessary for the control of n radio channels, but only for a period of time tpR needed for control. of the agreed number on n ^ radio channels. While e.g. the control duration (= cycle duration t_) for control of n = 40 radio channels is 3000 ms, n ^ = 2 radio channels 30 can be controlled in a control time tpR «150 ms. During the remaining time (= pause time tpA) of cycle time tz1, tZ2 ···, the receiving portions of the otherwise non-stationary radio stations are switched off. Of the embodiment shown in FIG. 1, it is clear that the ratio of the pause time 35 tpA to the control time tpR is very large. Thus, the receiving parts are disconnected most of the time and are only briefly switched on to control the agreed radio channels

DK 162001 BDK 162001 B

4 med hensyn til deres optaget-tilstand hhv., hvis de er optaget, med hensyn til deres individuelle sikringskode.4 regarding their busy state or, if busy, with respect to their individual security code.

Den maksimale pausetid tpA retter sig efter den for radionettet fastlagte maksimale tid for forbindelsesop-5 bygningen. Kontrol-pause-cyklen bevares, enten indtil en af de to radiostationer skifter om til sendedrift med henblik på at kalde den anden radiostation, eller indtil en radiostation konstaterer en optaget radiokanal. Konstaterer radiostationen på den optagne radiokanal sin 10 egen sikringskode, etableres automatisk HF-forbindeIsen med den kaldende radiostation.The maximum pause time tpA is based on the maximum time set for the radio network for the connection structure. The control pause cycle is maintained, either until one of the two radio stations switches to broadcast mode for calling the other radio station, or until a radio station detects a recorded radio channel. If the radio station on the recorded radio channel finds its own security code, the HF connection is automatically established with the calling radio station.

I fig. 2 vises som eksempel på en forbindelses-opbygning, at begge radiostationer 10, 11 er koblet på kanalen K3, hvorhos en sendedel 12 i den statio-15 nære radiostation 10 sender på en kanalen K3 tilknyttet bærebølgefrekvens f , mens sendedelen 13 i den ikke-stationære radiostation 11 sender på en ligeledes kanalen K3 tilknyttet bærebølgefrekvens f^. Tilsvarende er en modtagedel 14 i den stationære radiosta-20 tion 10 afstemt på bærebølgefrekvensen f^, mens modtagedelen 15 i den ikke-stationære radiostation 11 er afstemt på bærebølgefrekvensen f .In FIG. 2 shows, as an example of a connection structure, that both radio stations 10, 11 are coupled to channel K3, wherein a transmitting portion 12 of the stationary radio station 10 transmits on a channel K3 associated with carrier frequency f, while the transmitting portion 13 of the non-stationary frequency f stationary radio station 11 transmits on a channel K3 associated with carrier frequency f ^. Similarly, a receiving portion 14 of the stationary radio station 10 is tuned to the carrier frequency f ^, while the receiving portion 15 of the non-stationary radio station 11 is tuned to the carrier frequency f.

CLCL

Hvis f.eks. to ud af n radiokanaler er lagret (kanal K3, K4), kontrollerer modtageren i den stationære 25 radiostation løbende kanal K3 og kanal K4, og modtageren i den ikke-stationære radiostation kontrollerer kanalerne K3 og K4 efter hinanden til kontroltiderne tpR. Hvis én af de lagrede kanaler er optaget af et fremmed radiostationspar, benyttes straks den anden lag-30 rede kanal som organisationskanal på en sådan måde, at der over denne overføres en ordre om en ny kanalaftale til den anden station.For example, two out of n radio channels are stored (channel K3, K4), the receiver in the stationary radio station checks the channel K3 and channel K4, and the receiver in the non-stationary radio station checks the channels K3 and K4 one after the other at the control times tpR. If one of the stored channels is occupied by a foreign radio station pair, the other stored channel is immediately used as the organizational channel in such a way that an order for a new channel agreement is transferred to the other station.

Aftalen af de for et radiostationspar gældende radiokanaler sker fortrinsvis automatisk ved hjælp af 35 elektroniske midler, som kendes fra den elektroniske informationsformidlingsteknik .The arrangement of the radio channels applicable to a radio station pair preferably takes place automatically by means of 35 electronic means known from the electronic information dissemination technique.

Claims

1. The radio network for transmitting information between, in each case, a pair of several radio station pairs over a radio channel out of n radio channels, where each radio station pair's transmitting parts before a transmission 5 issues an individual security code, and the radio station's node parts only respond to this security code, characterized by at least before each initial commissioning, each radio station pair (10, 11) agrees and stores n ^ <n radio channels (K1 ...) that the receiving portion (15) 10 is switched on only during certain intermittent pause times (tpA) interrupted control times (tRR) to control the agreed radio channels in terms of their busy state and that the pause times amount to a multiple of the control times.

The radio network according to claim 1, characterized in that the stored radio channels (K3, K4) stored by each radio station pair serve if foreign radio stations occupy a radio channel (K3)., The remaining radio channel (K4) as an organizational channel over which a new radio is agreed. radio channel (K6) stored in both radio stations.

The radio network according to claim 1 or 2, characterized in that the search, appointment and storage of the available radio channels are performed automatically.