CN1249884A - Method for providing uplinds in radiomessaging network, radiomessaging network and network radio terminal, for implementing said method - Google Patents

Method for providing uplinds in radiomessaging network, radiomessaging network and network radio terminal, for implementing said method Download PDF

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Publication number
CN1249884A
CN1249884A CN 98802974 CN98802974A CN1249884A CN 1249884 A CN1249884 A CN 1249884A CN 98802974 CN98802974 CN 98802974 CN 98802974 A CN98802974 A CN 98802974A CN 1249884 A CN1249884 A CN 1249884A
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China
Prior art keywords
terminal
radio
base station
message
network
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Pending
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CN 98802974
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Chinese (zh)
Inventor
L·齐贝尔
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Sagem SA
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Sagem SA
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/022—One-way selective calling networks, e.g. wide area paging
    • H04W84/025—One-way selective calling networks, e.g. wide area paging with acknowledge back capability
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/18—Service support devices; Network management devices
    • H04W88/185—Selective call encoders for paging networks, e.g. paging centre devices

Abstract

The invention concerns a method for providing uplinks in a radiomessaging network comprising at least one base station (4), for transmitting radio messages to a plurality of radio terminal transceivers (1, 2), and at least a base station for receiving messages coming from the terminals (1, 2). The method consists in: allocating to each terminal (1; 2) a set of specific attributes including: a transmitting frequency, selected from a predetermined group, a transmitting time interval, of a predetermined time frame, and a coding word; synchronising among them the terminal (1, 2) time frames (C); and identifying the terminals (1, 2) at the receiving station (4) by their attributes.

Description

Transmit the method that up link is provided in the network, the radio message transmission network of carrying out this method and radio message transmission terminal at the radio message
The radio message transmits network and comprises the base station, and each base station guarantees that by the emission of down link land specific radio coverage area transmits the service benefited from the radio message.
For written message transmission being given the holder of network wireless electric terminals, the people who launches this message sends to the operator of radio net service centre to the message by the phone oral account, and radio net service centre forms the character of this message and the identification number of receiver terminal by radio transmission.The terminal that only has this identification could receive this message, thereby it is presented on its screen.
Therefore, the simple message transmission of carrying out in real time is problematic.Specifically, the holder of terminal in response to display message with the possible action taked owing to lack the scope that exceeds network to the up link of base station fully.This action for example can be receiving or or even the simple affirmation of the response of message content being returned to the correspondent of this message of emission.At present, this returns to call out and is undertaken by telephone network.
Therefore, this two-way communication needs a downlink network and a uplink network, and this is difficult to is user-friendly and usually can be related to and inserts the telephone network terminal and consumed time and often only receive and confirm to increase cost for returning.
Provide the terminal that has radio transmitter in order to improve above-mentioned shortcoming, to have imagined, therefore a up link to the base station is provided.
People can consider that message is transmitted terminal almost is transformed to bandwidth radiotelephone terminals, and it has for arriving the required transmitting boundary in base station.Yet this departs from the field that message transmits, and cost is very high and very limited about the autonomous time of energy.
Transmit in the field of terminal if still remain on message, keep its necessity and limited its acceptable transmitting power about the autonomous time of energy.But, in order to be in the condition that when receiving, detects by the base station, must be by the binary signal (bit) that terminal is launched on up link above minimum threshold about the base station energy sensitivity.
By a potential energy and the launching electrical level of terminal emission, or power, and this duration be directly proportional.Because transmission attenuation, this received energy obviously reduces corresponding to the energy of this emission, and the reduction degree increases with the increase of required separation distance.
In this case, because the maximum transmission power of up link is limited, for the receiving sensitivity threshold value with respect to the base station compensates the decay of the radio propagation between any point in the base station area and the base station, just have only each to adopt relatively long emission duration may launch enough energy.Yet, iff for the terminal in response to various callings is discerned, and to expand to more than the tens place, then consider the number of terminal and the figure place that each terminal will be launched, consider the holding time, the reduction of the bit rate of this up link will be wasted radio resource thereby will be excluded.
Therefore, the minimum bit rate rate limit that guarantee scope to a distance of up link, this distance is not enough to guarantee the connection of any point in the down link zone that covers from the base station to the base station.So, must provide this line link zone is divided into subregion again, each subarea comprises that receives a base station.In existing network, calculating shows that each tens of zone needs receives base station.
In brief, provide second network of up link or return link to have too high cost.
The present invention attempts to remove second network of this up link, and its effect is response or or even spontaneously message transmission is arrived the reception base station.
So far, the present invention at first relates to the method that up link is provided in radio message transmission network, this network comprises at least one base station and the base station of at least one reception from the radio message of described terminal to a plurality of radio receiver terminal transmitting radio broadcasting packets, the method is characterized in that:
-give one group of specific attribute of each terminal distribution, these attributes comprise:
A tranmitting frequency of from one group of preset frequency, selecting,
Transmission Time Interval in the frame at the fixed time, and
Coded word,
-make the time frame phase mutually synchronization of each terminal; And
-on the reception base station, discern them by the attribute of each terminal.
Therefore, terminal is launched its identification with implicit form, because its used tranmitting frequency and the time interval make that carrying out first when receiving from all terminals is selected to possibility.Coded word makes that removing all the other uncertainties becomes possibility.This can be the code word in message " next door " emission, and still, preferably, it is the word that message is encoded and adopted, and therefore is harmonious with message thereby needn't launches specially.Because it is the community set or the combination of these three definite terminal recognition, so each of these attributes can be that several terminals are common, thereby only has the probable value of limited number, and this has simplified the analysis when receiving.
The invention still further relates to a kind of radio message and transmit network, it comprises at least one base station and the base station of at least one reception from the radio message of described terminal to a plurality of radio receiver terminal transmitting radio broadcasting packets, it is characterized in that, each comprises the emission means of arranging in accordance with distributing to the attribute of terminal described terminal, comprising:
-be selected from the tranmitting frequency of one group of preset frequency,
The Transmission Time Interval of-scheduled time frame, and
-armed coded word has described message in the described time interval,
And the reception base station comprises:
-table by described Attribute Recognition terminal.
At last, the present invention relates to a kind of radio message and transmit terminal, be included as that the base station of transmitting network with the radio message communicates and the radio receiver means of arranging is characterized in that:
-for be tuned to be selected from the radio means that the tranmitting frequency of one group of preset frequency is arranged,
-base when providing arranges it to determine to distribute to the time interval of this terminal in time frame,
-data input means is provided, and
-the sequencer means are provided, by the time base control, arrange its readout memory means, the memory means contain the coded word of distributing to this terminal, and with described input medium collaborative work.
With reference to the accompanying drawings, the radio message that comprises up link of the present invention and down link is transmitted the description of the preferred embodiment of network, can understand the present invention better by following, wherein:
The schematically illustrated network of Fig. 1 with a base station and two terminals.
Fig. 2 illustrates the one group of tranmitting frequency F that is distributed between the terminal.
Fig. 3 illustrates the time frame of the emission of adjusting terminal.
The coded word that Fig. 4 works when being illustrated in terminal emission message.
Fig. 5 is the block diagram of terminal.
Fig. 6 is the block diagram of the receiving unit of base station.
Radio message shown in Figure 1 transmits 1,2 and base stations 4 of terminal that network comprises N radio transmission, and in this example, the base station is integrated again to transmit and receive function, promptly guarantees the two area of radio coverage (3) of up link and down link
Owing to the present invention relates to up link, therefore, for illustrate clear for the purpose of, omitted the detailed description of relevant down link.
Give each the terminal distribution three aspect attribute in N the terminal 1,2, i.e. frequency (Fig. 2), the time interval (Fig. 3) and coded word (Fig. 4).
The group of eight the preset frequency fi (i is 0 to 7 integer) that provide in this case is provided Fig. 2.
Fig. 3 illustrates two time frame T in succession, and it is the function of time t, and for the sake of clarity, it only comprises four time interval IT0, IT1, IT2 and IT3 in this case.
Fig. 4 illustrates coded word CD.In this this example, coded word CD determines the delay Rk of the beginning of code word C or bit pattern and this pattern C with respect to the starting point (being IT0 in this case) in the time interval of wherein being adopted simultaneously.In this case, for a grouping in N the terminal 1,2, bit pattern C is common, and for another grouping in N the terminal 1,2, it in fact is common postponing Rk.Therefore, a terminal can have four attributes, and still, in this case, for convenience's sake, for all terminals in N the terminal 1,2, bit pattern C is common, therefore only has three attributes, i.e. frequency f i, time interval ITj, delay Rk; The coded word CD that only contains a pattern C who selects from several patterns still can also be provided and not postpone Rk.
Fig. 5 is the block diagram of terminal 1.
In this case, radio receiver 11, storage and demonstration are synchronous with the time base 12 on the frame-synchronizing impulse of being launched by base station 4 (T) from the control circuit (not shown) of the message of down link.
In this example, the attribute of terminal 1 is downloaded, if necessary, they are changed is possible, in addition, avoid any artificial setting.So far, receiver 11 provides three memories 17,18,19, so that with three property store therein, these three attributes are respectively frequency f i, time interval ITj and coded word CD.Coming into force of above-mentioned storage had an effect memory circuitry 20, contains described in this case terminal 1 distinctive identifier word, so that open the comparator circuit 21 of a gate control.When the address of (11) message that received relevant with attribute that is loaded into by remote controller during corresponding to the identification of terminal 1, circuit 21 allows memory 17 to 19 is carried out access.
The time base 12 receive the time interval that belongs to terminal 1 from memory 18 and count ITj, the frame T in succession that reference terminal 1 produces only provides clock signal H during affiliated time interval ITj.Then, clock H initiating sequence generator circuit 13, transmission of uplink message so that pass through control radio transmitter 15.Therefore, according to the attribute that is distributed, the carrier frequency of memory 17 control tunable oscillators 16 controls transmitter 15.The 3rd attribute, promptly the coded word CD of memory 19 plays a part to adjust sequencer 13, as described below.
Sequencer 13 and data entry keyboard 14 collaborative works, the effect of keyboard be input butt joint receiving literary composition response or or even launch a uplink message, it has nothing to do with the reception of any downlink message.In the situation of response, this can be single affirmation position.
In this case, be to encode by the means of predetermined code word C to launch by the position of the message of terminal 1 emission, they are common for all N terminal 1,2 in this case.Before describing corresponding circuit, will the principle of this coding be described earlier.
By each of the message of terminal 1 emission is with the form emission of code word C, in this case, represents 2047 codes instantaneous.Recall, the instantaneous or baud (Baud) of code is corresponding to basic modulation period, and the latter remains unchanged during this period.According to the type of modulation, the signal of being launched keeps constant level or constant phase or frequency.Therefore, in this case, the position of being launched is represented by the instantaneous substantially pattern C of the sequence of determined value.Value according to this is 0 or 1, makes these values overturn or not overturn.
As mentioned above, by the clock cycle H of certain number, postpone Rk and make code word C introduce the logic phase shift, for all terminals 1,2, described delay Rk is inequality, though for several terminals, if their two other attribute is different, it can be common then postponing.When receiving, base station 4 search in each time interval ITj has above-mentioned pattern C or the mark that institute might postpone Rk, as directly or complementation represent.The length of pattern C can produce suitable redundancy, so that successfully carry out this search, although overlapping from occurring between the transmitting of several terminals 1,2.
Timing sequencer 13 comprises one group of shift register 131, receive clock H, provides the encode predetermined sequence C of 2047 pseudo-random bit being adopted of message.These registers 131 are with relevant such as the recirculation (re-looping) of XOR gate in this situation 132 door, it applies the logical combination of the downstream output of register 131 to the input of the upstream of register 131, so that authorize pseudo-random characteristics to sequence C, the identification when this is convenient to receive.
To be applied to XOR gate 134 at the bit sequence C on the output of register 131, by byte-by-byte the buffer storage 135 that writes read the state of keyboard 14, this XOR gate 134 controls transmitter 15.In the beginning of each time interval ITj, per 2047 clock cycle H are readout memory 135 bit by bit, in other words, and 2047 the upset of the position control sequence C that reads or do not overturn, as mentioned above.
The setting that in initial condition, has the sequence C of required delay Rk be the time base 12 control under carry out.Comparator 133 receive from the time base 12 signal Qi, the state of this signal indication frequency divider, make progress with clock H from the beginning of each time frame T, and by comparing with the content of memory 19, enter predetermined state in parallel setting by memory represented moment (Rk) control register 131, for all terminals the 1, the 2nd, identical.Therefore, the sequence on the output of register 131 has been delayed terminal 1 specified or distribution, corresponding to several clock cycle H that postpones Rk.Therefore sequence C can permanently provide from a time frame T to next time frame in the time interval ITj that is distributed from repeating.In this example, equal the duration of the time interval ITj circulation timei of sequence C.Consider to postpone Rk, in this case in each time interval IT0 of Fen Peiing, at first the supply a pattern termination (when the end of the interval of former frame T IT0, not utilizing) of C of register 131, then with the C that supplies a pattern begin be connected.
The receiving circuit of the schematically illustrated base station 4 of Fig. 6.It comprises the receiver array 41 of eight parallel connections of i=8, and is tuning on eight frequency f i respectively.Each receiver in the array 41 provides a circuit 13, and it is to be specifically designed to aforesaid 2047 the instantaneous pattern C of admission.So far, the clock signal H1 that base 40 will be similar to signal H the time offers the pseudo-random sequence generator 42 that is similar to circuit 131,132.The effect of generator 42 provides time reference, so that the drift of all terminals in the fixed network promptly determines to postpone Rk with respect to its state.The time base 40 go back the emission of generation time frame T and the frame synchronizing signal by downlink radio means (not shown) control terminal 1,2.In circuit 43, have circuit 432 that scalable postpones and make them can be according to various possible delay Rk search pattern C.。In fact, it can be one is provided by circuit 42 and by the serial/parallel register that one group of multiplexer is read, makes and may scan its various outputs, thereby can make amendment to postponing Rk.Circuit 432 provides the identification to the receive pattern C of (direct or paraphase) to postpone determining of Rk with each to circuit 434.The detection of pattern C, complementary directly or one by one instantaneous, the value of the message information position M that it is loaded with is provided.
Memory 46 comprises ternary table, comprises three attribute that has distributed: frequency f i, time interval ITj, coded word CD (being Rk in this case uniquely) for each terminal 1,2 of network.For three above-mentioned attributes, it comprises that three groups are read the addressing input respectively.Therefore, to put on time interval signal ITj be 3 to base 40 in the time of in this case, so that discern eight time intervals.
Such as the value of each circuit in eight circuit of circuit 43 at the ordering i of value of carrying out the delay Rk that coded word C when identification further provide representative and detected to memory 46 and the described circuit 43 of representative, i.e. frequency f i.Content for diode-capacitor storage 46 accesses, such as circuit 43, by one in 8 inputs of the priority level that increases progressively, control a specific input, this input is the code word that priority encoder circuit 44 provides at its output, it comprises three, represents the address or the ordering i of the input that is started of higher priority.74147 and the 74148 serial circuit of being produced by Texas Instruments are suitable for this purposes.
Circuit 44 control multiplexer circuits 45, it comprises several output links, the value Rk that is provided by described link 43 is provided, so that memory 46 addressing to reading.
As what understood, only comprise single identification id by the crosspoint of determined three sub-components of detected value of each attribute in three attributes such as terminal 1,2, need carry out except the situation of addressing the subgroup.
After N terminal of service, having discerned calling terminal 1,2, by multiplexer 47 (having the i=8 link), with the M that detected from foregoing circuit 43 bootstrap memories 48, so that be associated with this identification id therein.When receiving ensuing pattern C, ensuing position is with first storage, so that the reconstruct message.
Will be appreciated that the network of up link can separate with the network of down link, specifically, can carry out the synchronization of frame by the broadcast transmitter of the transmitter that is different from radio message transfer station.

Claims (6)

1. method that up link is provided in the radio message transmits network, described radio message transmit network comprise at least one to the base station (4) of a plurality of radio receiver terminals (1,2) transmitting radio broadcasting packet and at least one reception from the base station of the radio message of described terminal (1,2), it is characterized in that described method comprises:
Distribute one group of specific attribute for each terminal (1,2), it comprises
A tranmitting frequency (fi) of from one group of preset frequency, selecting,
Transmission Time Interval (ITj) in the frame (T) at the fixed time, and
Coded word (CD)
Make time frame (T) the phase mutually synchronization of terminal (1,2); And
Attribute by terminal (1,2) is upward discerned them in reception base station (4).
2. the method for claim 1, it is characterized in that: described message is encoded with coded word (CD).
3. the method for stating as claim 2 is characterized in that: the coding of described message is that a time drift (Rk) of selecting in several time drifts by coded word (CD) takes place.
4. a radio message transmits network, comprise that at least one receives base station (4) from the radio message of described terminal (1,2) to the base station (4) of a plurality of radio receiver terminals (1,2) transmitting radio broadcasting packet and at least one, it is characterized in that, described terminal (1,2) respectively comprises observes the emission means of distributing to the attribute of described terminal (1,2) and arranging, and described attribute comprises:
Tranmitting frequency (16,17) is selected from one group of preset frequency,
The Transmission Time Interval of scheduled time frame (12,18), and
Armed coded word (19) has described message in the described time interval,
And described reception base station (4) comprising:
Table (46) by described Attribute Recognition terminal (1,2).
5. a radio message transmits terminal, is included as that the base station (4) of transmitting network with the radio message communicates and the radio receiver means (11,15,16,17) of arranging is characterized in that:
For be tuned to the radio means (16,17) of arranging on the tranmitting frequency, this tranmitting frequency is selected from one group of preset frequency,
Base when providing one (12) arranges it to determine to distribute to the time interval of described terminal in time frame,
Data input means (14) is provided, and
Sequencer means (13) are provided, and its readout memory means (19) is arranged in base (12) control when described, and memory means (19) contain the coded word of distributing to described terminal (1,2), and with described input medium (14) collaborative work.
6. terminal as claimed in claim 5 is characterized in that: sequencer means (13) are included as control emission means (15) and the coding means (131,132,134) of arrangement.
CN 98802974 1997-01-24 1998-01-23 Method for providing uplinds in radiomessaging network, radiomessaging network and network radio terminal, for implementing said method Pending CN1249884A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR97/00748 1997-01-24
FR9700748A FR2758933B1 (en) 1997-01-24 1997-01-24 METHOD OF ESTABLISHING UPLINK CHANNELS IN A PAGING NETWORK, THIS PAGING NETWORK AND RADIO TERMINAL OF THE NETWORK, FOR IMPLEMENTING THE METHOD

Publications (1)

Publication Number Publication Date
CN1249884A true CN1249884A (en) 2000-04-05

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CN 98802974 Pending CN1249884A (en) 1997-01-24 1998-01-23 Method for providing uplinds in radiomessaging network, radiomessaging network and network radio terminal, for implementing said method

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EP (1) EP0954936A1 (en)
CN (1) CN1249884A (en)
FR (1) FR2758933B1 (en)
WO (1) WO1998033341A1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990015512A1 (en) * 1989-06-05 1990-12-13 Motorola, Inc. Acknowledge back paging system having the capability of matching variable length data messages to pager addresses
JPH04269021A (en) * 1991-02-25 1992-09-25 Nec Corp Two-way paging system
US5542115A (en) * 1994-06-24 1996-07-30 Pioneer Tech Development Limited Paging method and apparatus

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FR2758933B1 (en) 1999-03-26
FR2758933A1 (en) 1998-07-31
EP0954936A1 (en) 1999-11-10
WO1998033341A1 (en) 1998-07-30

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