CN1124549A

CN1124549A - Method and apparatus for transmitting information

Info

Publication number: CN1124549A
Application number: CN 94192235
Authority: CN
Inventors: 乔科·劳蒂奥
Original assignee: Telecom Finland Oy
Current assignee: Telecom Finland Oy
Priority date: 1993-05-27
Filing date: 1994-05-27
Publication date: 1996-06-12
Also published as: EP0705502A1; FI932433A0; HUT73124A; NO954732L; HU9503379D0; FI108382B; HU215895B; EE03327B1; WO1994028641A1; AU6797894A; LV11509A; LV11509B; NO954732D0; FI932433A; JPH08510605A

Abstract

The object of the invention is transmission along a transmission path between a base station (1) and a receiving or transmitting mobile phone (5), when coverage area of the base station is not adequate. This is accomplished such that the radio frequency message is converted within the transmission path at one part (3b, 3a) of a repeater into a message of audio frequency type, which is converted into a message of radio frequency type at a second part (3a, 3b) of the repeater, whereby the mobile phone (5) is capable to receive the same.

Description

Method of transmitting information and device

The present invention relates to a kind of be used to finish two between the radio interface contact and between these interfaces the devices and methods therefor of transmission information.

The message transmission of carrying out along the approach of such wireless radio transmission as the barrier by a wall one class etc., is had any problem, sometimes because the power of mobile phone or base station (base sta-tion) is limited.Fig. 1 shows this problem.Wherein, attempting provides communication between mobile phone 5 and base station 1, even this phone is positioned at barrier 9 back, this communication also is in the cards at present.At present, be that as shown in Figure 2 mode is carried out in the message transmission inlet chamber or from indoor spreading out of.1 (BS) is transferred to an antenna 2 that is connected to a transponder 3 through radio frequency cable 4 to information from the base station with RF-wise.This transponder 3 is a kind of automatically with the device of the signal forwarding from a communication to another time communication.In general be positioned at indoor at similar transponder in this case 3.The radio frequency amplifier 6 of information in transponder is exaggerated and transfers to an indoor cell-phone 5.This amplifier 6 belongs to broadband type.The electric energy of output is assigned to a plurality of channels, thereby the calling level at amplifier place can be changed.By antenna 2 and 2a to the cable 4 and the 4a of amplifier must be radio frequency cable, thereby make the message transmission of this mode extremely expensive.Call out or the correspondingly transmission in opposite direction of another information.

The object of the present invention is to provide information transferring method and device between a kind of radio interface to transmit with the information that low expense is finished between base station and a reception or transmission mobile phone.

For achieving the above object, in the present invention, between base station 1 and mobile phone 5, have

conversion transponder

3a, 3b that radio-frequency information is converted into audio-frequency information and an audio-frequency information is converted into a radio-frequency information, one radio-frequency information, the audio-frequency information that is converted into through the audio frequency/radio frequency of this transponder, be sent to the user along described transmission path, described transponder comprises two

part

3a, 3b and the audio frequency between these two parts with above-mentioned functions and connects 7.

Outstanding advantage of the present invention is to reduce the expense of message transmission.Known preferred circuit plate in the mobile phone still can use in the present invention.Thereby in those mobile phones itself is that the transmission receiving circuit of conventional series of products parts can continue utilization.And radio frequency also needn't be finished the transmission of passing obstacle through radio frequency cable.Communication between the high and low end of transponder can provide than more economic in the past effect.

The present invention will be described in conjunction with the accompanying drawings, wherein:

Fig. 1 shows the schematic diagram of present existing problems part;

Fig. 2 shows message transmission of the prior art;

Fig. 3 shows the technical scheme according to one embodiment of the invention;

Fig. 4 shows the receiver that is used for the information that sent by a base station and the scheme of transmitter.

Fig. 3 shows the improvement that radio telephone information is transmitted.At this moment, expectation can will be sent to the information that RF-wise transmits one by the place that is beyond one's reach, the conventional base station of application.Unidirectional message transmission has been described thereafter.Clearly, rightabout message transmission is fine, and carries out with the same manner in the opposite direction.

Article one, information is sent to the antenna 2 of the high-end 3a of a transponder by a base station 1 (BS) with RF-wise.The high-end 3a of this transponder receives the information of this RF-wise and this information is transformed from this radio frequency energy or demodulation becomes audio-frequency information, identical information via such as cable 7 are sent to the low side 3b of this transponder, and be modulated to a carrier wave and launch from the low side of this transponder as radio wave, arrive cell-phones 5 along a transmission path 8.

Or rather, this transponder is made of the acceptor circuit of reflector and NMT phone, include high-end (master) and low side (from).For protecting these circuit, a housing or like are provided.A central location is controlled from its inside to the communication of outside and external-to-internal, and can discern the signal command of being sent out, rely on these orders, call out and reached receiver, and the transponder Be Controlled enables radio frequency is converted into audio frequency, also can change conversely.

The transmission of transponder low side and receive frequency are corresponding to the frequency of base station.Although the transponder of being made up of the transmission and the receiving circuit of NMT phone may cause power attenuation when transmitting, even in most of the cases lower power is also enough, because the interior space is limited.

Owing to call out is that therefore employed line is both economical with the transmission of audio frequency mode between two-part each termination (head).Therefore, it is possible below doing like this, promptly use a branch unit (ramifiermeans), can stretch out many electric wires, thereby the end of electric wire is placed in different spaces or room location information can be sent to desired place by upper end or main portion from transponder.According to the simplest a kind of pattern of technical scheme of the present invention, its when the mobile phone communication amount of Frequency Distribution type for once only being communicated with a calling.According to the number of calling out, can select to have the system of desired expansion.The present invention is particularly suited for low-density calling contact.

Any copper cable, optical cable, radio link or connect such as twisted-pair feeder can be used as the transfer path between the termination 7 up and down at transponder.This transponder must be able to receive information and same information is further reached above-mentioned transmission approach.This method can be distributed the mobile phone communication amount of type, assignment of code type or Frequency Distribution type the delivery time.

Modular structure can be made in the termination up and down of transponder, thereby through the traffic of Frequency Distribution the time, also can connect each calling at a plurality of passages.

Fig. 4 shows from a base station more accurately to the unidirectional message transmission of a mobile phone.Certainly, also can when using opposite circuit, carry out rightabout message transmission.After information from base station 1 transmits, receive by the upper end 32 of a receiving circuit by a transponder, this information is converted into audio types and is sent to the transtation mission circuit 3b of the low side of transponder through the communication path 7 between termination 3b, the 3a up and down.And the speech of fundamental frequency is modulated the rf frequency of this radio transmitters 3b, and this radio wave is transferred into the receiver 5 of mobile phone.

It should be noted that the present invention's just one of them preferred embodiment recited above especially.But the present invention is only limited to above-mentioned example, and in the scope of determining in claim thereafter of the present invention, it is possible making some modifications.

Claims

1, a kind of method is used for finishing information by a transponder (3) along a transfer path between a base station (1) and radio telephone (5) and transmits, and it is characterized in that:

Between base station (1) and mobile phone (5), it is an audio-frequency information that a radio-frequency information is located at by one that transponder (3a, 3b) on the transfer path is demodulated to.The information that described transponder can be carried out the conversion of audio frequency/radio frequency and will change gained is sent to the user along transfer path, and described transponder comprises two parts (3a, 3b), and described two parts have above-mentioned functions, and between has audio frequency connection (7).

2, the method for claim 1 is characterized in that:

The described information that transmits through radio interface is received by a transponder (3a, 3b), described transponder is wireless receiver/transmitter unit, described information therein by radio frequency by demodulation, information after the demodulation is transferred into another receiver/transmitter unit (3a, 3b) as a carrier frequency along described transfer path (7), and the speech of fundamental frequency is modulated the radio frequency of described radio transmitter (3a, 3b), and described radio wave is transferred into mobile phone (5).

3, the method for claim 1 is characterized in that, through described transponder (3a, 3b) transmission is Frequency Distribution information.

4, the method for claim 1 is characterized in that, what transmit through described transponder (3a, 3b) is the time assignment information.

5, the method for claim 1 is characterized in that, what transmit through described transponder (3a, 3b) is assignment of code information.

6, the method for claim 1 is characterized in that, the transmission of the low side of described transponder (3b) and receive frequency are corresponding to the frequency rule of described base station (1).

7, a kind of device is used for passing through a transponder (3) transmission information between a base station (1) and mobile phone (5) along a transfer path, it is characterized in that,

Between described base station (1) and mobile phone (5), have the conversion transponder (3a, 3b) that radio-frequency information is converted into audio-frequency information and an audio-frequency information is converted into a radio-frequency information, described this transponder can carry out audio frequency/radio frequency conversion and with the information after changing be sent to the user along described transmission path, described transponder comprises two parts (3a, 3b) and the audio frequency between these two parts with above-mentioned functions and connects (7).

8, device as claimed in claim 8 is characterized in that, it is a radio link, copper cable, optical cable or twisted-pair feeder that described audio frequency connects.