CN1295768A - Communication system and method for selecting alternative frequencies - Google Patents

Communication system and method for selecting alternative frequencies Download PDF

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Publication number
CN1295768A
CN1295768A CN 99804556 CN99804556A CN1295768A CN 1295768 A CN1295768 A CN 1295768A CN 99804556 CN99804556 CN 99804556 CN 99804556 A CN99804556 A CN 99804556A CN 1295768 A CN1295768 A CN 1295768A
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China
Prior art keywords
message
communication system
selcall
radio
channel
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Granted
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CN 99804556
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Chinese (zh)
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CN1192645C (en
Inventor
小埃德加·H·卡拉维
萨尔瓦多·塞博卡斯
威廉·J·库兹尼凯
埃里克·T·伊顿
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Motorola Mobility LLC
Google Technology Holdings LLC
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Motorola Inc
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Priority claimed from US09/031,523 external-priority patent/US5940756A/en
Priority claimed from US09/031,649 external-priority patent/US5940757A/en
Application filed by Motorola Inc filed Critical Motorola Inc
Publication of CN1295768A publication Critical patent/CN1295768A/en
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Publication of CN1192645C publication Critical patent/CN1192645C/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/12—Inter-network notification
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/12—Messaging; Mailboxes; Announcements
    • H04W4/14—Short messaging services, e.g. short message services [SMS] or unstructured supplementary service data [USSD]
    • 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
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

A communication system (100) that selects alternative data channels for communication including a cellular communication system (900) has a base station (106) coupled to a plurality of alternative data communication systems (112, 114, 116) that receive messages intended for a selective call device designated by an address. A data scheduler (104), coupled to the base station (106) and the plurality of alternative data communication systems (112, 114, 116), has a categorizer (404) for categorizing the message as being suitable for transmission on an alternative data channel, a controller (402) for coordinating a list of the alternative data communication systems suitable for transmitting the message and a selector (406) for selecting the alternative data channel for transmitting the message. A controller (105) encodes a selective call signal with the address and a vector and a transmitter transmits the selective call signal to the selective call device (102) on a control channel including the address for identifying the selective call device, the vector designating the alternative data channel.

Description

Select the communication system and the method for reserve frequency
The present invention relates to communication system, more particularly, the method and apparatus of the reserve frequency of other transmission system of the cellular communication system of the message related to calls that the present invention relates to select to comprise that transmission is selected.
Have plurality of communication systems to be in use now, in fact comprise all selected calling systems now, these calling systems utilize frequency modulation(FM) (FM) addressing, and carry out data and voice transfer.Current communication user unit, for example selcall utilizes very complicated receiver architecture, and the well-known and established signaling format of selected calling system utilization now.Current receiver architecture and signaling format are optimised, so that high receiver sensitivity and fabulous power saving capability to be provided.
In many big cities, in open ended number of users, and message delivery times two aspect that is suitable for, many selected calling systems or situation near maximum system capacity under turn round.Owing to insert the prolongation of selected calling system required time, and owing to the delay of the message transmission aspect that causes because of the same selected calling system transmission of messages formation that prolongs prolongs, such selected calling system running has caused user satisfaction decline.At present,, perhaps, increase the stand-by period, satisfied this needs by requiring selcall to make battery longer service time by improving the data rate of the agreement of using.
In order further to aggravate this problem, the interior or domestic available limited radio-frequency spectrum of world wide is challenged to the seamless communication that the contact selcall is provided.When selecting calling device to be in roaming state or to have lost its signal, can in available selective call frequency range, scan or select in order to make selcall, must assemble frequency synthesizer to selcall.But,,, still can not realize or expect significant system extension though enlarge markedly existing aspect message-length and the number of users because the number of available selective call frequency is limited.
Like this, need a kind of under the situation of the selective call Frequency Distribution that need not add any special use, can improve the selected calling system that message transmits, perhaps radio paging agreement or cellular protocol need do not changed, and under the situation of more special-purpose selective call Frequency Distribution, by seeing through existing cellular communication system, can improve the selected calling system that message transmits.
Fig. 1-the 3rd, the circuit block diagram of communication system according to a preferred embodiment of the invention.
Fig. 4 is the circuit block diagram according to the data scheduler of Fig. 1-3.
Fig. 5 is the circuit block diagram of selcall according to a preferred embodiment of the invention.
Fig. 6 is the chronogram of the transformat of graphic extension Grand Alliance high definition TV (HDTV) according to a preferred embodiment of the invention.
Fig. 7 is the flow chart that the method for the reserve frequency that is used to communicate by letter is determined and coordinated in graphic extension according to a preferred embodiment of the invention.
Fig. 8 is that the also flow chart of the method for the reserve frequency of coordination data scheduler is determined in graphic extension according to a preferred embodiment of the invention.
Fig. 9 is the wireless paging communication system of combination according to a preferred embodiment of the invention and the illustrated blocks figure of cellular communication system.
Figure 10 is the circuit block diagram of cellular switch according to a preferred embodiment of the invention.
Figure 11 is the circuit block diagram of radio call terminal according to a preferred embodiment of the invention.
Figure 12 is the circuit block diagram of radio call terminal control unit according to a preferred embodiment of the invention.
The circuit block diagram of Figure 13 portable communication appts according to a preferred embodiment of the invention.
Figure 14-the 17th, the chronogram that is used to transmit and receive the synchronizing signal of selective call message according to a preferred embodiment of the invention.
Figure 18 and 19 is illustrated in the base station to initiate in the process of message the flow chart of the operation of base station according to a preferred embodiment of the invention.
Figure 20 and 21 is graphic extensions according to a preferred embodiment of the invention when message is initiated in the base station, the flow chart of the operation of selcall.
Figure 22 is the flow chart of selcall initiation messaging protocol according to a preferred embodiment of the invention.
Figure 23 is graphic extension according to a preferred embodiment of the invention when Portable Communications Unit is initiated message, the flow chart of the operation of base station.
Figure 24 is the flow chart of the registration procedure that begins of graphic extension selcall according to a preferred embodiment of the invention.
Referring to Fig. 1-3,, represented electrical block diagram among the figure with the communication system of other preliminary data communication system coupling according to most preferred embodiment of the present invention.Specifically referring to Fig. 1, communication system 100 preferably includes the selective call communication system (base station controller 105 and antenna) 106 with 104 couplings of data scheduler.Data scheduler 104 and a plurality of other standby wireless data communication systems, for example Cellular Digital Packet Data (CDPD) communication system 112, and the FM subcarrier is checked and approved (FMSCA) platform 14 and Grand Alliance high definition TV (HDTV) platform 116.Selcall (perhaps portable communication device) 102 and selective call communication system 106 wireless coupling, and preferably according to InFLEXion TMAgreement is communicated by letter with selective call communication system 106.The timing of InFLEXion agreement and data structure are well-known to the technical staff in the selective call field of wireless communications.Technical staff in this field knows that the InFLEXion agreement is used to adapt to voice communication.
In operation, when receiving that when specifying the message of selcall 102, selective call communication system 106 preferably transmits selective call signals 108 to selcall 102.The selective call signal comprises the address of discerning this selcall and points out the vector of the frequency of preliminary data communication system.In addition, the vector of selective call signal can comprise the agreement of recognition data structure, and when the notice selcall will transmit the time tag of this message and the message group character sign indicating number of the message that identification will receive.Selcall 102 receives and deciphers address and vector.Vector can be selcall 102 guiding another or reserve frequency, the perhaps channel in distributing to this group channel of this selective call frequency spectrum not, and can discern the message that will receive together with message or packet identifier.So after deciphering its correct address, selcall 102 is deciphered reserve frequency and is distributed, and is transformed into this channel (or frequency), loads the appropriate protocol decoder; How protocol decoder identification or regulation will receive and decipher message or information.Inversion frequency, and select the details of protocol decoder to go through below.Utilize two-way choice calling device 102, selcall 102 will or can be on control channel, preferably the InFLEXion protocol channels is confirmed the reception of its address and vector assignment 110, and control channel plays pre-assigned control (or default) channel.
Referring to Fig. 2, be transformed into standby frequency data communication at selcall 102, and loaded after the protocol decoder of vector assignment appointment, selcall 102 beginnings are listened on the preliminary data channel, the preliminary data channel can be, for example distribute to the HDTV platform, for a frequency in the class frequency of its transmission use.Should know that selcall 102 will change and be retained on the alternate channel, so that receive its message preset time.HDTV transmission system 116 will appointment or up duration in, under correct frequency, transmit message 202 to selcall 102.After preset time, selcall 102 will be changed back the InFLEXion control channel, and as shown in Figure 3, by whether being received 302 to selected calling system 106 acknowledge messages, whether notice selective call communication system 106 message are received.
Though expression is well-known among the figure, the selective call communication system is given the communication link of the request of subscribing selcall 102 message or message transmission with being used to receive, and for example public switched telephone network (PSTN) couples.Selective call communication system 106 can couple with other data supply person, for example stock market and out of Memory service.When, when receiving request in the peak value of for example selective call communication system 106 hour, especially receive the long message of transmission, for example when data or information service kind of message, data scheduler 104 transmits message to select the best (or available) preliminary data system to the selcall 102 of appointment with poll preliminary data system.This selection can series of standards be that carry out on the basis, and these standards include, but are not limited to the type of system protocol, frequency, and expense and selcall utilize standby protocol to decipher the easiness of message on reserve frequency.Perhaps, preliminary data system 112,114,116 can provide these preliminary data systems when to can be used for transmitting the time list of selective call message to data scheduler 104 in advance.
Time scheduler 104 will have all specification requirements about all preliminary data systems, comprise, for example the agreement of channel (frequency) and appointment data structure.This information is incorporated into selcall 102 in advance.So, for example, by utilizing code, vector for example, selcall 102 is known the channel (frequency) that will be transformed into, data structure and in order to receive its message must keep tuning time with this channel.Because agreement difference and system loads, all preliminary data systems can have the different stand-by period.
Should note data scheduler 104 operation in (wired and wireless) that can control environment in distributed transmission, distributed transmission controls environment and allows to mix traditional honeycomb, broadcast satellite or relate to a plurality of radiofrequency launcher/receivers and be used for when radio and television identical in other covering scheme that the conventional antenna of reliable radio signal is provided in the geographic area of world wide network greatly.
Referring to Fig. 4, represented the electrical block diagram of data scheduler among the figure.Data scheduler 104 preferably includes the preliminary data communication system tabulation of coordinating to be suitable for transmitting selective call message or information.Controller 402 preferably produces and retrieves the information about alternate communication system at memory in the random-access memory (ram), for example back-up system information 408.Back-up system information 408 can comprise the availability such as each back-up system, and it loads program, stand-by period, the information of expense of message transfer and so in the different time periods.With the grader 404 of controller 402 coupling message is classified as candidate in the reserve frequency channel.Grader 404, for example measure and count message in number of characters, and outnumber predetermined number (threshold value) when this, for example during the 50-100 character, this message is characterized as being the long message that is suitable for by the preliminary data system transmissions.Channel selector 406 selects to be suitable for the preliminary data channel of message transfer, and from 412 retrieval frequency, agreement and the stand-by period of memory.Certainly all available radio (OTA) renewals and selcall radio contact of any variation in the preliminary data system.The scheduler of data shown in the figure 104 and antenna 416 and communication link, for example public switched telephone network (PSTN) 414 couplings, this communication link can be communicated by letter data scheduler 104 with selcall 102, and sends the OTA renewal.PSTN 414 makes data scheduler 104 constantly receive information from the preliminary data communication system.Transceiver 410 (those skilled in the art are familiar with its operation) makes it possible to data scheduler 104 transmission information, and from data scheduler 104 reception information.Data scheduler 104 comprises the information of storage about the preliminary data system, frequency for example, agreement, the memory of stand-by period etc., preferably erasable memory.When selecting the calling device Indication message not to be received, retransmit this message by selecting another or same preliminary data channel, starter 418 starts the repeating transmission of this message.
Referring to Fig. 5, this figure is the circuit block diagram of selcall 102 according to a preferred embodiment of the invention.Those of skill in the art know, because the present invention has used the alternate channel of other communication system, have increased the bandwidth of operation of selcall 102.Can operation in the preliminary data system and receive the selcall 102 of information should be able to frequency band at about 54MHz～941MHz on reception information.The receiver part preferably has the antenna 502 that can be adjusted to the information that receives in whole bandwidth.Antenna 502 and 504 couplings of radio frequency (RF) amplifier.First frequency mixer 506 is mixed to 1030MHz to the frequency that receives, and this frequency is provided for band pass filter 508, the second frequency mixers 510 and intermediate frequency (IF) amplifier 512 that couples with analog-digital converter (ADC) 514 serials.First synthesizer 516 and first local oscillator (OO) 518 and 506 couplings of first frequency mixer, second synthesizer 520 and second local oscillator 522 and 510 couplings of second frequency mixer, the 3rd synthesizer 524 and the 3rd local oscillator 526 and ADC 514 couplings simultaneously.Reference oscillator 528 control the first, the second and the 3rd synthesizers and oscillator are right.Receiver adopts a high IF who is higher than frequency acceptance band (for example 1030MHz) to move first image, and an IF has eliminated the needs to tunable preselector quickly away from frequency acceptance band.After being transformed to for the second time low IF, required signal,, is separated to be in harmonious proportion and is further handled again by the restructural protocol processor subsequently by programmable digital channel model 530 by ADC 514.Restructural protocol processor 532 and controller 540 couplings, controller 540 and agreement read-only memory (ROM) 542 couplings, the agreement read-only memory 542 storages a plurality of agreements relevant with 116 with a plurality of preliminary data communication system 112,114.Controller 540 is gone back and codeplug read-only memory (ROM) 544 couplings, the address of codeplug read-only memory 544 storage selcalls 102.With the message that message RAM 546 storages of controller 540 couplings are received, display 548 shows or presents this message to the user.
Antenna 502 and RF amplifier 504 are tunable in frequency acceptance band.First frequency mixer 506 receives required 54～941MHz signal from RF amplifier 504, and with itself and 1084～1971MHz LO mixing, with generation 1030MHz the one IF frequency.This IF signal is sent to an IF filter 508, and the bandwidth signals that surface acoustic wave (SAW) filter preferably, width are enough to handle expection departs from, for example 6MHz.Subsequently this signal is sent to second frequency mixer 510, this frequency mixer is with itself and 984.9MHz the 2nd LO signal mixing, to produce 45.1MHz the 2nd IF signal.The 2nd LO frequency can change+/-3MHz, to be received in any single signal in 6MHz the one IF transmission band.The 2nd IF signal is exaggerated, and sends ADC 514 to.
In operation, when selecting calling device 102 to receive its address, selcall 102 is checked the vector relevant with this address, to determine whether this message of transmission on alternate communication system.Can be to two or more binary digit codings, to specify the frequency and the agreement of alternate communication system.So when selecting calling device 102 received code vectors, it retrieves the information that comprises frequency and data structure from agreement ROM 542.Perhaps, in the vector that the frequency of alternate communication system can be included in clearly and this message interrelates.Receiving filter and frequency synthesizer will be set to and be transformed into and receive this message on the preliminary data communication system.
Referring to Fig. 6, represented the chronogram of Grand Alliance HDTV agreement among the figure, this figure illustrates the transformat of one of preliminary data HDTV communication station 116.The data structure of HDTV or constructed in groups 600 comprise the link head 602 of 4 bytes, adjustable length self adaptation head 604.Data 606 are attached on the adjustable length self adaptation head, and causing total length is 188 bytes.Ratio is 3 binary digit/characters.
Referring to Fig. 7, represented to determine and coordinate the method for standby communication frequency among the figure.When the user passes through, for example when PSTN Input Address and message, the selective call base station receives this message, step 702, and determine whether this message is short message, step 704.Short message can be designated as the alphanumeric character number less than predetermined number, and 50 or 100 message for example depends on the capacity or the stand-by period of selected calling system.If short message, then this message of transmission on the preassignment control channel of InFLEXion agreement does not promptly indicate selcall to be transformed into preliminary data channel, step 706.When receiving long message, retrieval or the tabulation that produces the preliminary data system are to determine which preliminary data system is more suitable for transmitting this message, step 708.Selected calling system is according to some preassigneds, transmission cost for example, the length of the message that transmit, the stand-by period of preliminary data system, and the type selecting preliminary data system of information carrier, step 710.Can be according to agreement, its frequency or stand-by period etc. classify to carrier type.Selected calling system is estimated the stand-by period of the preliminary data system of selection, step 712, and determine which preliminary data system suits step 714.If all preliminary data systems do not have the acceptable stand-by period, step 714, then selected calling system can be selected the shortest preliminary data system of stand-by period, step 716.On the other hand, if all or more than one preliminary data system have the acceptable stand-by period, step 714, then selected calling system preferably selects to have the required stand-by period, and the minimum preliminary data system of the expense of transmission of messages, step 718.Subsequently from step 716 and 726 at the beginning, to message coding, and this message sent to this preliminary data system according to the agreement of preliminary data system so that transmission at the appointed time, step 720.Address and vector are transferred to selcall 102, make this selcall 102 can be transformed into the preliminary data system that is discerned by this vector, step 722.Selected calling system is waited for from selcall 102 receiving state reports, to determine whether this message is received step 724.A sure report finishes the transfer sequence of this message, step 728.It fails to receive this message when selecting calling device 102 reports, and then selected calling system is transmitted this message repeatedly within the predetermined time again, step 726.If this section period expiration, and selcall 102 fails to receive this message, step 726, then selected calling system can select another preliminary data system to transmit this message, step 716.
Referring to Fig. 8, when Input Address and message, step 802, data scheduler are to distribute to the transmission channel of permission of the selcall checking system memory of receiver address, step 804.According to message-length, purpose selective call pattern, the preliminary data system availability, loading procedure reaches previous message channel and successfully waits selection transmission channel or preliminary data system, and selects transmission time again, step 806.Standard according to step 806, if select InFLEXion channel (control channel), then message be attached on address and the vector, and be transferred to selcall according to the InFLEXion data structure, step 810, InFLEXion data structure are well-known in the art.
On the other hand, when being chosen in preliminary data channel (rather than InFLEXion control channel) and going up this message of transmission, determine the address of selcall 102, discern the vector of this message channel, agreement, and when with time of the message of transmission, step 812.Message, transmission time and selective call address are transmitted to data scheduler 104, step 814.Data scheduler 104 can be got in touch the preliminary data system, to determine to be suitable for transmitting the time of this selective call message.Data scheduler 104 is waited for the response that comes from selcall 102 through selective call base station 106, step 816.The data scheduler determines according to status report whether this message is received step 818.If this message receives that then process finishes, step 820, else process is transferred to step 804, checks the channel of permission.
Like this, when other communication or transmission system had available resources, the selective call communication system can be coordinated and select alternate channel from other communication or transmission system.This technology creates conditions for low-cost communication efficiently, will externally or on the standby transmission sources transmit because which message selcall can determine one by one.By the present invention, selected calling system can be specified other transmission system that is suitable for to the longer message of selcall, thereby improves the stand-by period of selected calling system.Under the situation that needn't expand special-purpose selective call frequency, improved the message conveying capacity.
In a word, the selective call communication system of the preliminary data channel that coordination and selection are used to communicate by letter comprises the base station that couples with a plurality of preliminary data communication systems, and the preliminary data communication system receives predetermined message of giving by the selcall of address appointment.The data scheduler that couples with base station and a plurality of preliminary data communication system comprises and is used for message is classified as grader at the candidate of preliminary data channel.Grader determines that whether the length of message is greater than threshold value, controller coordinate is suitable for transmitting the tabulation of the preliminary data communication system of this message, selector selects to be suitable for transmitting the preliminary data channel of this message, and produce and storage preliminary data channel list, when selecting the calling device indication not receive this message, starter starts the repeating transmission of this message.Starter selects another preliminary data channel to be used to retransmit this message.Encoder is to comprising the selective call signal encoding of address and vector, and wherein this vector comprises that appointment is used to wait for the response from selcall, to determine whether to have received the delay of the time period of this message in the preliminary data system.Reflector is transferred to selcall to the selective call signal on control channel, wherein the selective call signal comprises the address that is used for the identification selection calling device.Vector is specified the frequency of preliminary data system.When protocol identification data structure and notice selcall will transmits the time tag of this message, and transmission of messages to the preliminary data communication system so that Chuan Shu PSTN at the appointed time.The selective call signal comprises the address of identification selection calling device, specify the vector of the frequency of preliminary data communication system, the agreement of recognition data structure, when this message of notice selcall is with the time tag that is transmitted, and wait is determined the time delay that whether this message is received on the preliminary data communication system from the response of selcall.
Referring to Fig. 9, this figure is the radio paging communication system of integrated according to the preferred embodiment of the invention or combination and the pictorial image of cellular communication system 100.Integrated communication system 900 comprises a plurality of cellular transmission district 902, each cellular transmission district 902 is included in to portable communication unit, for example cell phone 920, the antenna tower and the base station 904 of using in selective call receiver 940 or other personal communication transceiver call transmission.Be appreciated that each transmission range in antenna tower and base station 904 and a plurality of cellular transmission district 902 interrelates, but, only represented four antenna tower and base station 904 among the figure for giving an example and simplicity and purpose.In each cellular transmission district 902, to the call transfer of cell phone 920, be well-known in the art from antenna and base station 904.
Fig. 9 has also represented many radio paging transmission ranges 906, has represented wherein two among the figure.Each radio paging transmission range 906 covers many cellular transmission district 902.In the example shown, each radio paging transmission range 906 covers 10 cellular transmission districts 902; The actual number that but will recognize the zone that is capped depends on the radio paging transmission region 906 with respect to each covering, the actual size in each cellular transmission district 902.Each radio paging transmission range 906 comprises antenna and the base station 908 that is located substantially on this transmission range center.
The calling that the caller utilizes telephone system to send is drawn towards the cell phone part of portable communication appts 920, and this telephone system comprises the caller's who couples by public switched telephone network (PSTN) and telephone company central office phone 922.From telephone company central office 924, calling couples by telephone line and service centre (SC) 932, couples with cellular switch 926 subsequently.Service centre 932 according to double mode control protocol cellular system, preferably Global Systems for Mobile communications (GSM) protocol network and radio paging system, preferably FLEXTM radio call protocol network combination.Utilize the existing protocol in the GSM foundation structure, entity in service centre's 932 inquiry gsm systems, for example home location register (HLR) and visitor location register (VLR) upgrade and state information to obtain the position, and the details of HLR and VLR will be described in greater detail below.Service centre 932 also determines to use which system to transmit the message of input.Service centre 932 is by telephone line and FLEX radio paging network and GSM cellular network communication, and between radio paging network and cellular network transferring status data." go-between " between caller and the FLEX/GSM network regarded as in service centre 932.Cellular switch 926 is through telephone lines, and perhaps link transmitter and receiver (not shown) combine suitable antenna tower and the cellular basestation 904 called out and this calling cell phone 920 pointed is positioned at cellular transmission district 902 wherein selectively.About the cellular system operation of call transmission between based on the phone of ground line and portable cellular phone, be well-known in the art.Described a kind of such cellular system in the U.S. Patent No. 3906166 " radio telephone " of Cooper etc., this patent is transferred to assignee of the present invention, and is contained in this as a reference.
Be sent to selcall 940, perhaps the radio call message of the beep-pager of portable communication appts 920 part also utilizes telephone system to send by the caller, this telephone system comprises caller's phone 922, and phone 922 couples by public switched telephone network (PSTN) and telephone company central office 924.From PSTN 924, radio call information couples by service centre 932 and telephone line and radio call terminal 928, and radio call terminal 928 is handled the radio call message that is used to transmit.After radio call message was processed, the radio call message after the processing was through telephone line, and perhaps antenna and the base station in link transmitter and receiver (not shown) and each radio call transmission range 906 couples.Usually, can in the whole zone that radio paging system covers, launch these radio call message from each antenna and radio call base station 908 in the mode of radio hookup simultaneously.
Though wireless paging communication system and cellular communication system are by independent operation, handle cellular calling, and the radio call message of the selective call receiver 940 of in each corresponding system, working, but, when radio call receiver or selective call receiver 940 combine with cell phone 920, can cause problem.In a preferred embodiment of the invention, set up communication link 930, and set up from service centre 932 to cellular switch another link 934 of 926 from service centre 932 to radio call terminal 928.This makes service centre 932 to communicate by letter with radio call terminal 928, notice radio call terminal 928, plan is being used to the cell phone part that it sends the portable communication appts 920 of radio call message, and calling and radio paging network or cellular network coupling.
Figure 10 is the electrical block diagram that is suitable for the cellular switch 926 used together with the present invention.Usually, the operation of cellular switch is well-known in the art, and therefore concise and to the point description only is provided here.The calling that is derived from the phone that is positioned at whole public switched telephone network is by telephone company central office, and through telephone line and service centre's 932 couplings, details is discussed below.Service centre 932 is also by telephone line 1100 and 1102 couplings of honeycomb switching network.Switching network 1102 is sent to the calling that cell phone 920 is positioned at cell-site wherein so that utilize duplex voice telephone line 1104 to make selectively, with each the cell-site coupling in the cellular system by processor 1106 controls.Processor 1106 is also controlled modulator-demodulator 1108 and is recovered position data or geographical location information, and position data or geographical location information are coupled to processor 1106 from modulator-demodulator 1108 subsequently.Position data is stored in the home location register 1112.Processor 1106 is through switching network 1102 controlling call routes.Processor 1106 is also carried out the function of short message service gateway mobile switching centre (SMS-GMSC), and SMS-GMSC is used to set up the calling that is sent to GSM user's (cell phone).SMS-GMSC's is functional relevant with Mobile Termination short message (SM-MT).By duplex data telephone line 1110, the position or the geographical position of each cell phone 920 are passed to processor 1106 in the cellular system, and duplex data telephone line 1110 is coupled the position data that is modulated to modem tone to modulatedemodulate system device 1108.Modulator-demodulator 1108 under processor 1108 controls obtains the positional information that is stored in the original location register (HLR) 1112.(MSC) 1118 of mobile switching centre is sent to the honeycomb place to calling, and user's set is positioned at this honeycomb place, perhaps can obtain service in this honeycomb place.The essential middle buffer memory of mobile switching centre's 1118 control Route Selection and short message, and the basic switch function in the execution GSM network.Except obtaining position and route messages, processor plays SMS-GMSC, by the reception of duplex data circuit and other entity inside and outside gsm system, for example the wireless paging communication system sends report, make it to know whether message is successfully received, perhaps whether has fault in transport process.
Processor 1106 also plays Short Message Service intercommunication mobile switching centre (SMS-IWMSC), and is used for mobile originated short message (short message mobile originated) (SM-MO).When short message was initiated by mobile device, when base station controller (BSC) 1124 is received this information, mobile switching centre (MSC) 1118 had sent to this information the processor of SMS-IWMSC effect.When the time spent of doing that processor plays SMS-IWMSC, it is responsible for receiving message, when in case of necessity, sets up by the link of telephone line to the base station controller that just is being addressed (BSC) 1124, and this short message is sent to base station controller 1124.Base station controller 1124 is responsible for all radio interface management by the remote command of mobile radio station (MS) 1122.The main task of base station controller 1124 is to distribute and discharge radio channel to manage with transferring.Each base station controller 1124 general control is a hundreds of base station transceiver nearly, and some of them are positioned at the base station controller place jointly, and other distributions are remoter, and by microwave link or dedicated leased-line and base station controller 1124 physical connections.The interface that connects base station transceiver and base station controller 1124 is called as Abis interface.Abis interface transmits traffic data and service data, and to be defined as for all manufacturers by GSM be standardized.
Home location register (HLR) 1112 user profile are relevant with the regulation (provision) of telecommunications service, international mobile subscriber identity for example, and be the number that arrives the user from common network, the permission assistant service of also having specified the user who is retained in the home location register 1112 in addition.HLR1112 also comprises the current-position related information with the user.Visitor location register (VLR) 1120 and mobile switching centre's 1118 couplings.VLR1120 plays active user in the storage networking, especially the effect of the temporary storage of ramber's tentation data.Under roamer's situation, after his or her original mobile switching centre receives this roamer's information, mobile switching centre 1118 upgrades its VLR1120.Like this, network can provide the performance that the primitive network by the roamer provides.A main difference between VLR1120 and the HLR1112 is when calling comes from mobile radio station, and VLR1120 provides necessary user data to mobile switching centre 1118.On the other hand, when calling came from common network, HLR1112 carried out identical functions.HLR1112 and VLR1120 also store such as the cell phone identification information, information of charging information and so on and essential out of Memory for the operation of cellular system.Operator's controller 1114 and processor 1106 couplings make it possible to control the work of cellular system, and can visit and change canned data among HLR1112 and the VLR1120.Operator's console 1114 also is coupled with switching network 1102, so that pass through the work of processor 1106 surveillances.Mobile radio station (MS) 1122 preferably is ready to Short Message Service (SMS).Short Message Entity 1152, for example telephone network switching center or Integrated Service Digital Network receive and provide short message to service centre 932.Service centre 932 gives mobile radio station 1122 this transmission of messages, and keeps the responsibility of this message, till arriving report from network, perhaps till the timeout period expiration.After short message is received by service centre 932, for the short message that receives, mobile radio station 1122 is reported to the network echo-plex, formerly be exceeded owing to its memory span, thereby after the refusal short message,, notify this network when it has when can be used for receiving one or more short message, and some message of notifying the user to remove storage, so that provide memory capacity for another short message that arrives.In its memory, mobile radio station 1122 will have been stored FLEX agreement and gsm protocol.
Cellular switch 926 of the present invention provides the means of communicating by letter with relevant radio paging system.Among the embodiment that will describe in detail below, radio call terminal " hurrying " signal by producing in telephone company central office is determined cellular state.In the embodiment shown in Figure 11, when radio call terminal/network 1150 and cellular switch 925 each other during wide apart, utilize special-purpose duplex data telephone line 1116, realize the communication between radio call terminal and the cellular switch.When radio call terminal and cellular switch each other when nearer, duplex data circuit 1116 is the part of local area data network (LAN) also.Utilize special-purpose duplex data telephone line 1116, about portable communication appts 920, comprise that single cell phone and plan send the information of the beep-pager of radio call message to it, give cell phone from the radio call terminal transmission, make radio paging network 1150 can determine when that cell phone just is being busy with active call.When the radio call terminal determines that cell phone 920 just is being busy with active call, preferably forbid the radio call transmission of messages.
Figure 11 is the circuit block diagram that is suitable for the radio call terminal 1150 used together with the present invention.Usually, those of skill in the art know the operation of radio call terminal, and therefore the concise and to the point description of operation only is provided here.One or more input ports 1170 link to each other with public-switched telephone system, make to utilize the radio call generating means such as phone to visit radio call terminal 928 by the caller, can import radio call message.When radio call terminal 1150 receives when calling out, on the digital input bus 1174 that couples with controller 1176, produce output.By digital input bus 1174, controller 1176 makes management tone generator 1178 can produce the affirmation tone, and this affirmation tone is coupled to first input end mouth 1170.By telephone line, this tone is passed to the caller, and indication radio call terminal 928 is ready to receive the pager number that will send the radio call recipient of radio call to it.As being well known in the art, for this pager number, the number of the numeral that import depends on the number of the beep-pager of work in this system, for example for 1000 pager systems, is 3 numerals.When receiving, handle by the DTMF-binary translator from these 3 numerals of push-button telephone input with the form of double-tone frequency modulation (DTMF) tone, so that the numerical data of handling by controller 1176 to be provided by first input end mouth 1170.Controller 1176 utilizes user list database 1180 to check the pager number that receives, with the actual pager address code of determining to transmit to the radio call receiver 940 of selection, database 1180 generally is non-volatile memory, for example hard disk or eeprom memory, it can consider the number of users in the system, regularly changes as required and renewal.
User list database 1180 also comprises the information about those radio call receivers that combine with cell phone.When controller according to user list database 1180 determine radio call receivers and cell phone in conjunction with the time, set indication before transmission radio call message, require and cellular switch control of communication mark, and recover the information of the cell phone part of identification portable communication appts.
In the first embodiment of the present invention, controller 1176 utilizes the second input port (not shown), by getting in touch of digital input bus 1174 startups and cellular switch.The dtmf tone that second input port is configured to produce corresponding to cell phone number is transferred sequence.If the integrated cell phone of forward sends calling, will produce busy signal in telephone company central office.This busy signal is deciphered by the detector circuit in the input port, output after deciphering is detected by controller, controller makes management tone generator 1178 can produce the second affirmation tone of indicating the transmission of radio call message to be delayed to the caller again, and tone for example " hurries ".Controller 1176 begins to produce the indicating call person says this message (as in voice system) subsequently, perhaps imports the 3rd of message data (as numeral or alphanumeric message) and confirms tone.Those of skill in the art will recognize that can produce the voice that replace confirming tone introduces response, and the guiding caller imports pager number, telephone number and message, and indication radio call transmission of messages just is delayed.
When the transmission of radio call message will be delayed, existing/stand-by radio call file memory 1196 put into the message data in the stand-by radio call file by controller 1176.During speech message, caller's message is preserved by controller 1176 when message, and controller 1176 is guided speech message into the stand-by message file that is positioned at voice storage module 1182 by input audio port 1184.
When cell phone 920 is not busy with active call, perhaps when beep-pager 940 is just called out, controller 1176 is put into the existing radio call file that is arranged in existing/stand-by radio call file memory 1196 or storaged voice module 1182 to radio call message, depends on the type of radio call message.In the time of when controller 1176 is determined to be transmission radio call message, by digital output bus 1186, controller 1176 makes synthesizer 1188 can produce appropriate numeric address sequence corresponding to the selected Portable Communications Unit 920 of wanting radio call.This address sequence is exported to emitter/receiver controller 1190, is used for transmission so that send to reflector 980.When message was stored in the voice storage module 1182, controller 1176 made it possible to recover this message by digital input bus 1174.By controller 1176, this message is sent to output audio bus 1192, delivers to emitter/receiver controller 1190 again, is used for transmission so that send to reflector 908.Subsequently, launch by reflector 908 corresponding to the radio call message signale of address sequence and voice or data-message.
When finding that cell phone 920 just is being busy with main when calling out, controller 1176 will be at 3～5 minutes predetermined retry in period, and preset time for example every 1 minute, is regularly attempted the contact cellular switch, as mentioned above at interval.The repetition rate of call state of determining cell phone 920 is by determining such as this type of factor of the average minimum time length of calling out on the cellular system, and predetermined retry is set to maximum call time at interval period, perhaps preset time at interval, after this preset time interval, radio call message callee takes it is " outmoded " as.Surpass this retry during the period when the cellular telephone messages duration, controller is deleted this radio call message from existing/stand-by radio call file memory 1196.
Figure 12 is the circuit block diagram that is suitable for the radio call terminal control unit 1176 that uses together with the preferred embodiments of the present invention.Controller 1176 comprises microcomputer 1200, and for example the MC6809 microcomputer of being produced by Motorola is used for providing digital control by data input bus (DIB) 1174 and digital output bus 1186.Controller 1176 is also by Audio Matrix switch 1202, and by audio frequency control port 1204, audio-frequency bus 1184 and output audio bus 1192 are imported in control.Microcomputer 1200 comprises the central processing unit (CPU) 1206 that is used to operate control.All elements of internal bus 1208 couplings or connection microcomputer 1200.The digital input bus 1174 of digital input port 1210 couplings, the digital output bus 1186 of digital output port 1212 couplings, digital audio control port 1204 coupling audio matrix switches 1202.Timer/counter 1216 is used to produce the required time interval of system works, for example regularly determines the required time interval of call state of cell phone 920, and the retry period.Oscillator 1218 provides clock for the work of CPU1206, and provides reference clock for counter/timer 1216.RAM 1220 is used by CPU 1206, also provides storage area for the radio call formation such as existing radio call file and stand-by radio call file.Recognize size,, may need extra RAM or other storage device, for example hard disk in order to provide enough memory spaces for radio call formation and telephone number according to system.Read-only memory (ROM) contains the firmware that is useful on 1200 operations of control microcomputer.Be included in providing in the ROM 1222 to input control, output control, message queueing control, the selective call radio paging signal produces, and the routine of cellular switch Control on Communication (only having enumerated minority here).
Referring to Figure 13, represented the circuit block diagram of portable communication appts according to a preferred embodiment of the invention among the figure.Portable communication appts 920 comprises cell phone and the selective call receiver (beep-pager) that is integrated into single device.Portable communication appts or selcall 920 comprise and are used for receiving from the GSM base station, and send cellular signal, for example antenna 1302 of GSM signal to the GSM base station.With receiver front end, for example the antenna 1302 of GSM receiving circuit 1304 coupling is suitable for radio frequency (RF) signal that intercepts or obtain to send, and this radiofrequency signal is preferably modulated according to gsm protocol.GSM front end 1304 is carried out such as radio frequency and is amplified, down-conversion, radio frequency and intermediate frequency filter operation, automatic gain control (AGC), and the function that input signal is divided into its base band inphase quadrature (I-G) component and so on.Antenna 1310 and acceptor circuit, for example FLEX front end 1312 couplings are used for receiving or obtaining radio call or message signale.FLEX front end 1312 is carried out and GSM front end identical functions, but the bandwidth difference.GSM front end and FLEX front end all are coupled with voltage cut-out 1306, and voltage cut-out 1306 is used for changing to the FLEX receiving mode from the GSM receiving mode under the control of processor 1326, and this will describe in detail below.Integrated circuit 1308 and switch 1306 couplings, and comprise analog-digital converter (ADC) 1314 and the D-A converter (DAC) 1318 that is coupled with switch 1316.ADC 1314 is the FLEX and the formal transformation of GSM signal from analog that receive a digital form, and switch 1316 is used for the operation at GSM, is converted to emission mode from receiving mode.Switch 1316 is by processor 1326 controls.Similarly, before emission, DAC 1318 is base-band digital GSM conversion of signals an analog signal.Processor 1326 comprises digital signal processor (DSP) 1320, central processing unit (CPU) 1322 and voltage regulator 1324.The GSM of 1320 pairs of receptions of DSP and FLEX message demodulation, produce automatic frequency control (AFC) and automatic gain control (AGC) signal, produce the required clock signal of ADC 1314, produce the base-band digital I-Q component of the signal of emission, digital signal after the demodulation is provided, digital signal after the demodulation and Codec 1328 are coupled, and digital signal is converted to analog voice, and vice versa.CPU 1322 produces driving display 1332, for example signal of light-emitting diode (LED).Other active element in voltage regulator 1324 forward end receiving circuits and the radiating circuit provides the constant voltage that is independent of load.With the memory IC 1330 storage filter factors of DSP 1320 coupling, speech samples etc., display 1332 provides graphical interfaces to the user.EEPROM (Electrically Erasable Programmable Read Only Memo) (EEPROM) 1334 storage cap codes.Data terminal 1336 makes it possible to coupled computers, facsimile machine or any miscellaneous equipment of digital information can be provided.With data terminal 1336 coupling be the switch 1338 that power is transformed into selcall from battery 1340.Switch 1338 is by CPU1332 control, and when data terminal can provide power, switch 1338 cut out internal cell 1340, and was transformed into the power supply from data terminal 1336.
Quadrature modulator 1342 utilizes the baseband I of two oscillators to quadrature; Q component carries out up-conversion, and and the modulus of complex number analog signal combination that provides of DAC1318.Quadrature modulator also amplifies the signal from DAC1318 in advance, and to this signal filtering.With 1344 pairs of signal filterings of crystal filter of quadrature modulator 1342 couplings from DAC1318, and the stimulation (spur) of decay generation.With crystal filter 1344 coupling be the automatic gain control amplifier 1346 of the control voltage amplification signal that produces according to DSP1320.With the frequency mixer 1348 of AGC amplifier 1346 couplings the band pass filter 1350 that intermediate-freuqncy signal upconverts to tranmitting frequency and frequency mixer 1348 couplings is filtered this signal, and decay is by the stimulation (spur) of frequency mixer 1348 generations.With the amplifier 1352 amplifying emission signals of filter 1350 coupling, GSM signal preferably, this RF switch 1354 that transmits by CPU control imposes on antenna 1302.In the GSM process, by utilizing the well-known technology of those skilled in the art, switch 1354 is transformed into emission mode to antenna from receiving mode.
Figure 14 has represented the chronogram according to the synchronizing signal of preferred protocol.Selective call (radio call) signal, for example the FLEXTM signaling protocol is by many, and best 128 message grouping or frame 1400 are formed.The duration of each frame 1400 is preferably 1.875 seconds, and has the preferred master data speed of 6400 bps.But to recognize and to use other data rate, comprise the ability of using several data speed.Referring to Figure 15, each frame comprises bit synchronization signal 1502 (preferably 112 alternately 1,0 pattern), be frame synchronization #1 signal 1504 (one of preferably several 32 predetermined words) thereafter, frame information signal 1506 (preferably 32 words, the information such as number of cycles and frame number is contained in these 21 variable information positions) with 21 variable information positions.Bit synchronization signal 1502 provides bit synchronization to selective call receiver 940, and frame synchronizing signal 1504 provides frame synchronization, and comprises the signal of the data rate of representing information, and details is discussed below.
After the frame information word 1506 is frame synchronization #21508.After the frame synchronization #21508 is block message word (BIW) signal 1510, comprises the number such as the priority address, the end of block message field, and vector begins field and the system crash value is sheltered, and BIW1510 will discuss in more detail.For each of 928 frames of selective call transmission, it all is identical that system crash is sheltered, and use by the selective call receiver, so that by another kind of energy-saving mode operation, perhaps be different from the period of energy-saving mode, perhaps in selective call receiver 940, operating in the period of pre-plan.Preferably such as 31,21 Bose-Chaudhuri-Hocquenghem (BCH) code word that produces according to well-known BCH algorithm with 21 information bits and 10 parity check bits, to the code word coding of each frame 1400.Additional even parity bit expands to 31,21 code words to word.The address is arranged in piece 1512, and the vector of refer message (if available) is arranged in piece 1514, and message is arranged in remaining 1516.Best, all address signals in the frame are arranged in first 1512, and information signal is arranged in the further part of piece 1516.Those of skill in the art know the information 1516 in the second portion of the address of how to search in the first 1512 and frame 1400.Represented word 1512-1516 with vertical orientation, can be to represent these words by staggered, so that improve the vulnerability to jamming of transmission to unexpected error.Skilled in the art will recognize that and to revise or to eliminate this interlocking.
Referring to Figure 16, the figure illustrated more detailed block diagram of block message word 1510.Block message word 1510 comprises block of information 1502 and parity block 1610.Block of information 1510 comprises 21, and according to the preferred embodiments of the present invention, R 0Represent when cellular system is too busy, so that can not transmit any radio call message or information.P 0Position or mark represent when cellular system is just experiencing rush hour or off-peak hours loading, thereby radio paging system will be known the speed of transmission radio call message on cellular network.In rush hour, cellular communication system may not want to allow the reception of selcall acknowledge message.G 0Position or control mark are illustrated in geographical position or the zone, and which GSM frequency can be used (if any), and C 0Position or mark represent which code division multiple access (CDMA) honeycomb channel or frequency are available (if any).F 0-6Position or mark are represented when transmission radio call message on cellular system, the preferred honeycomb channel of use.
Referring to Figure 17, the block message word is represented as the short instruction vector.As position V 0-2During the value of being set to " 001 ", the block message word is corresponding to the short instruction vector, and as position or mark i 0-1During the value of being set to " 011 ", information is instruction type.When setting F 0When position or mark, sending Fax Messaging, V 0Position or mark are represented speech message, D 0Position or label table registration are according to message, and S 0Position or mark are represented private message.Mark N 0-3Expression message number, and M 0Position or mark represent to pass through another medium, for example the message number of cellular network transmission.P 0The position or mark be the expression since message just by cellular system transmissions, selective call receiver 940 should forward the preferential power and position of cellular network immediately to.I 0Position or label table are shown into station message and are received by cellular system.
Figure 18 and 19 is flow charts of graphic extension base station operation according to a preferred embodiment of the invention.Specifically referring to Figure 18, communication system, for example dual-mode base station (promptly can be according to cellular protocol, for example gsm protocol and radio call agreement, for example base station of FLEX protocol communication) begins its initialization procedure, step 1800.The base station receives the incoming call of designated user, step 1802, and, check or read HLR first about being addressed or the cell phone of appointment or the nearest geographical position of beep-pager (" selcall ").If do not find selcall identifier (ID) in HLR, then the base station is checked VLR, step 1804 subsequently.The base station determines whether and will or transmit this message, step 1806 according to gsm protocol or the transmission of FlEX agreement subsequently.When the base station determines that will be according to this message of FLEX protocol transmission the time, step 1806 be stored this message, step 1808, and subsequently this message is put into formation, wait for transmission cycle, step 1810.Before this message of transmission, set the R mark of BIW, expression will be transmitted this message, step 1812 by FLEX agreement (cellular system is busy, and perhaps this message is more suitable for the FLEX protocol transmission).Setting check returns (ACK) mark or nothing-ACK address, step 1814.After this message of transmission, step 1816, the base station reads or checks whether ACK mark and address are set to the expression base station and should wait for ACK from selcall, step 1818.If not, then process is returned, and waits for another message in step 1802.If message is set to ACK, step 1818, then base station waits comes from the ACK of the subscriber unit 920 of appointment, step 1820.Step 1822 determines when receives ACK, and perhaps whether timeout period expires.When receiving ACK, remove this message, step 1824, and subsequent process returns step 1802.If do not receive ACK before in timeout period (predetermined a period of time), step 1822, then this message and registration request, step 1826 are transmitted in the mode of radio hookup simultaneously in the base station.Afterwards, whether base station queries HLR and VLR must set up new registration procedure step 1828 to determine selcall.If what selcall execution Indication message was successfully received sets up new registration procedure, step 1830 is then removed this message, step 1824, and process is returned step 1802.Do not set up new registration procedure when definite selcall, then store this message, step 1832, and transmit this message, step 1834 after a while.Though not expression among the figure, if before step 1802 is returned in the base station, if message is not received, then the base station can be transmitted predetermined times again.
Return step 1806, when because, for example cellular system can be used, this message is more suitable for transmitting on cellular network, perhaps because speed is lower or the like, when the base station determines that this message should be transmitted on cellular network, stores this message 1840.Process continues, and step 1842 forwards the step 1900 of Figure 19 to.The base station determines that the message that obtains is real-time messages or non real-time message, step 1902.When definite this message is non real-time message, for example during Fax Messaging, step 1902 is stored this message, step 1904.The base station is by setting, for example F of FLEX agreement 0Or D 0Mark, to short instruction vector (Figure 17) coding, the notice selcall will be through non real-time message of cellular network transmission, step 1906.The base station checks whether selcall can visit GSM network, step 1908 subsequently.If can not, this message is checked by another medium in the base station whether, for example telephone system (Wireline) is transmitted step 1910.If then the short instruction vector of FLEX agreement is used to notify this message of selcall to be transmitted step 1930.From memory, remove this message, step 1932, and remove FLXE formation, step 1934.If this message is not transmitted through another medium, step 1910, then this message stores in base station, step 1912.The base station is broadcasted the short instruction vector and the message header of FLEX agreement, step 1914 simultaneously.In step 1916, the base station checks whether selcall can visit the GSM network, if can not, then this message stores in base station, step 1918.
After step 1908 or step 1916, process in step 1920, determines whether to exist the request that message is forwarded to diverse location that comes from the user in step 1920 beginning.If no, then the base station begin the transmission, step 1922, and receive from the GSM network this message correctly transmitted and receives be sure of after, subsequently from the base station removing this message, step 1924.If receive the request of transmitting this message, step 1920, then the base station determines whether through wireless medium, for example GSM or FLEX, perhaps cable network, for example telephone line transmits this message, step 1926.If transmit this message through telephone line, then this message is sent to PSTN, step 1928 is removed the FLEX formation, step 1934 subsequently.
Perhaps, when receiving or obtain real-time messages, step 1902 is set short instruction vector priority mark in the FLEX agreement, step 1940, and also set the short instruction vector V mark of FLEX agreement subsequently, step 1942.Afterwards, check that whether selcall can visit the GSM network, receives its message, step 1944.If then begin transmission of messages, step 1960.When selecting calling device visit GSM network, this message of GSM Network Transmission transmits in time guaranteeing.If selcall is not visited the GSM network, then in the time of predetermined length, notify the FLEX network.Be terminated in communication, before the step 1964, GSM provides the state information of communication, and waits for, till sign off, and step 1962.On the other hand, when selecting calling device can not visit the GSM network, the base station determines whether that by another medium, for example telephone line transmits this calling, step 1946.If then the short instruction vector M mark of FLEX agreement is used to notify this message of selcall to be transmitted step 1948.If transmit this message without another medium, step 1946, notification call person then, the user of expection is disabled, step 1950.Also require the caller to import his/her telephone number or identifier, step 1952.By the FLEX agreement, request of radio hookup registration simultaneously and caller ID, step 1954.
Referring to Figure 20, represented among the figure according to a preferred embodiment of the invention, illustrate when base station initiated message the flow chart of the operation of selcall.This process starts from step 2000.Selcall Search Control channel, FLEX channel preferably, ID and geographic position data (color code of standing), step 2002.After finding control channel, selcall reads or checks the G mark of the block message word (BIW) of FLEX agreement, and step 2004 determines whether preferred GSM channel is available, step 2006.Usually, the information about preferred GSM channel is stored in the memory of selcall.If but the preferred channel time spent, then selcall is transformed into this GSM channel, step 2008.Perhaps, when preferred channel was unavailable, selcall was transformed into gsm protocol, and began to check the different available GSM frequencies or the signal strength signal intensity of channel, and selected the strongest GSM channel of signal strength signal intensity, step 2010.Afterwards, perhaps on preferred GSM channel, perhaps on the strongest GSM channel of signal strength signal intensity, selcall is logined the GSM network, and provides FLEXID information, step 2012.Selcall is changed back the FLEX control channel subsequently, step 2014, and keep standby/receiving mode, step 2016.When selecting calling device to find its address, it is waited for receiving and is arranged in any corresponding message or the instruction when and where indication will transmit the address vector field of this message, step 2018.Selcall continues wait, till instruction arrives, and step 2020, if not, then selcall returns its standby mode, step 2016.When vector arrives, determine the vector type, step 2024.If this vector is the FLEX vector, then selcall is retained in the FLEX network, to receive and to store this message, step 2028.After receiving this message, selcall gives the alarm, and makes the user know that a piece of news is received step 2030.Selcall inspection or inquire this address is still received non-ACK address, step 2032 to determine to receive the ACK address.If receive non-ACK address, then selcall returns its standby mode, step 2046.
But when receiving the ACK address, the BIW of selcall inspection or inquiry FLEX agreement marks whether to be set to the ACK that the indication selcall should send response, step 2034 to determine R.When system was in the peak loading, cellular communication system can be forbidden confirming.R mark and ACK address determine when that the permission selcall sends its affirmation.If disapprove, then selcall is waited for, up to the R mark be set to indication it at any time can transferring ACK till, step 2036, subsequently, selcall is transformed into gsm protocol pattern, step 2038.If the R mark is set to ACK, step 2034, then selcall is converted to GSM pattern, step 2040.After step 2040 or step 2038, transferring ACK message, step 2042, and selcall is changed back the FLEX control channel subsequently, and step 2044 is so that return standby mode, step 2046.
When vector type indication GSM vector, the step 2024 of Figure 20, process proceeds to the step 2100 of Figure 21, and in step 2102, checks cell voltage, to determine whether voltage is lower than threshold voltage, step 2102.If voltage is higher than this threshold value, then process forwards step 2110 to.When voltage is lower than this threshold voltage, step 2102, selcall indication or set low icon of battery capacity or designator, and the user is known GSM message, step 2104 are arranged.Selcall rests on the FLEX network, and step 2106 is returned standby mode, so that receive FLEX message, step 2108.When cell voltage was not low, selcall was transformed into the GSM pattern, step 2110, and start GSM access program, step 2112.If selcall visit GSM network, step 2114, then selcall is transformed into the traffic channel (TCH) of distribution, step 2116.The honeycomb control channel is used for providing call state to service centre, step 2117, and be retained in the GSM channel, and till communication is finished, step 2118.After communication was finished, selcall was changed back the FLEX control channel, step 2120, and return standby mode, so that receive its FLEX address, step 2122.
Perhaps, when selecting calling device can not visit the GSM network, during step 2114, selcall manages to visit once more the GSM network, and step 2114 afterwards, determines whether selcall can visit GSM network, step 2126.If selcall can be visited the GSM network, then as mentioned above, process arrives step 2116.But, if selcall can not be visited the GSM network once more, step 2126, then selcall is changed back FLEX control channel, step 2128.Selcall is set GSM type of message designator, and indication GSM message is in wait state, step 2130.Monitor the received signal intensity of FLEX agreement, step 2132, and whether the received signal intensity of definite FLEX signal increases step 2134.If FLEX received signal intensity is without any improve, then selcall rests on the FLEX channel, step 2136, so that continue to monitor received signal intensity, step 2138 is in monitoring mode, step 2140 simultaneously.
If signal strength signal intensity is enhanced really, step 2134, then whether selcall will attempt to determine this message by another device, for example telephone line transmits, step 2142.If then selcall is not visited the GSM network, step 2144, and be retained in the FLEX network, step 2146, and return its standby mode, step 2148.But, if message can't help another device and transmit, step 2142, selcall checks that the R in the FLEX agreement marks whether to be set to ACK, step 2152.If, selcall login GSM network, step 2154.Step 2156 determines whether selcall can login the GSM network, if can not, selcall is retained in the FLEX network, and step 2150 is so that monitor received signal intensity, step 2132.If the R mark is not set, step 2152, then selcall is waited for, till the R mark is set to ACK, step 2160.When selecting calling device to determine that the R mark is set to ACK, selcall is transformed into the GSM pattern, and begins registration, step 2162.After step 2156 or step 2162, selcall is changed back the FLEX pattern, step 2166, and keep standby mode, step 2168.
Referring to Figure 22, according to a preferred embodiment of the invention, represented the flow chart of the messaging protocol that selcall is initiated among the figure.Initialization procedure starts from step 2200, and the selcall initiation message orders, and step 2202 checks afterwards whether cell voltage is higher than threshold voltage, step 2204.If be not higher than threshold voltage, then selcall is retained in the FLEX control channel, step 2206, and show battery meter low icon or designator, step 2208.On the other hand, if cell voltage is higher than threshold voltage, step 2204, then selcall checks that the BIW R of FLEX agreement marks whether to be set to ACK, step 2212.If not, then selcall shows disabled GSM channel icon, step 2214, and be retained in FLEX control channel, step 2210.If the R mark is set to ACK, step 2212, then selcall is transformed into the GSM pattern, and step 2216 starts the GSM access program, step 2218.In step 2220, determine whether selcall can visit the GSM channel, if can not, then process is returned step 2214, shows disabled GSM channel icon.When selecting calling device can visit the GSM network, step 2202 determines whether message is short message, step 2222.If short message then uses the short message program with double mode agreement this message to be sent to service centre 932.When message is not short message types, for example when voice or text, step 2222, the base station is gone up to start at the cellular communication amount channel (TCH) that distributes and is called out so that send text or speech message, step 2224.The base station utilizes the honeycomb control channel to send SMS message, so that this calling well afoot, step 2226 are known by service centre 932.But, before stopping this calling, perhaps after sending whole text message, on the honeycomb control channel, sending a short message to service centre, this calling of notification service center is terminated step 2228.From step 2232 or step 2228, selcall is transformed into the radio call agreement subsequently, FLEX network for example, and step 2230 is returned step 2202 afterwards.
Referring to Figure 23, this figure be graphic extension according to a preferred embodiment of the invention, when portable communication appts is initiated message, the flow chart of base station operation.Initialization procedure starts from step 2300, and the input message on the GSM network, step 2302 are checked in the base station.Piece 1504 checks whether message arrives FLEX, GSM or PSTN network.If message just arrives the GSM network, then service centre checks the call status information about the honeycomb control channel, step 2305, and allow the base station to allow the whole communication of GSM network processes, comprise and call out or the message transfers program step 2306.When message arrives through PSTN, step 2304, message is stored in the base station, step 2308, and form telephone line interconnection, step 2310 subsequently.When transmitting message, set the short message vector I mark of FLEX agreement, step 2312, and eliminate this message, step 2314.
At last, when message when the FLEX network arrives, preferably geographical position (or color code) is included in the radio paging signal, step 2304 is kept at base station, step 2320 to this message.The base station is that designated user is checked the proximal most position among the GSMHLR, step 2322, and setting user's expection or appointment ACK or non-ACK address, step 2324.BIW R mark is checked in the base station, step 2326, and message sent to suitable FLEX base station, and step 2328, in this FLEX base station, message is launched, step 2330.After this message of emission, determine that ACK address and R mark whether to be set, step 2332, and do not set, then process jumps to step 2340.Otherwise, if ACK address and R mark are set, step 2332, base station waits ACK preset time then, step 2334.If receive ACK, step 2336, then the base station notifies this message of user to be transmitted by setting the short message vector I mark in the FLEX agreement, and step 2338 is removed this message, step 2340 subsequently from memory.
If ACK arrives within the predetermined time, step 2336, then the base station is broadcasted this message simultaneously on the FLEX control channel, step 2342, and wait for predetermined a period of time, perhaps till ACK in the process of setting up new registration procedure arrives, step 2344.In step 2346, determine whether to receive ACK, if receive, then, notify this message of user to be transmitted by setting the short message vector I mark of FLEX agreement, step 2348, and from memory, remove this message, step 2350 subsequently.In if ACK does not arrive within the predetermined time, step 2346 is then preserved this message, step 2352, and when the user of expection logined again, how much message the base station determined to have in the memory about this user, step 2354.Selcall initiatively with situation that honeycomb channel is communicated by letter under, the base station retransfers all unsettled message to the user of login again on the honeycomb control channel, step 2356.
Referring to Figure 24, this figure be graphic extension according to a preferred embodiment of the invention, the flow chart of the logging program that selcall is initiated.Initialize routine starts from step 2400, and selcall search is subsequently also obtained the FLEX control channel that comprises geographic location code (color code), and storage sites ID (color code), step 2402.Selcall is checked the BIWG mark of FLEX agreement, and step 2404 is to determine whether preferred GSM channel, step 2406 are arranged in this zone.If no, then selcall is transformed into the GSM pattern, so that check the signal strength signal intensity that receives, determines to have the GSM channel of highest signal strength, step 2408.If find preferred GSM channel, step 2406, selcall is transformed into the GSM channel, and step 2410, and login GSM network send to the base station to the FLEX channel id that receives, and send the message number that receives, step 2412.Storage GSM cell ID, step 2414, selcall is changed back FLEX agreement, step 2416 subsequently.The FLEX ID of selcall inspection transmission, step 2418, and the ID that stores in FLEX ID that receives and the memory relatively, step 2420.Relatively, step 2422 determines whether they are different, if not, then process is returned step 2418.When FLEX ID is different from the ID of transmission, step 2422, selcall is checked its cell voltage, step 2424 is to determine whether cell voltage is higher than threshold value, step 2426.If cell voltage is higher than threshold value, step 2426, then process is returned step 2404, checks the G mark of BIW in the FLEX agreement.When cell voltage is lower than threshold value, step 2426, selcall is retained on the FLEX control channel, step 2428, and indication or low icon of setting battery capacity or designator, step 2430, subsequent process continues to step 2418.

Claims (12)

1. a combination of wireless page communication system and cellular communication system of communicating by letter with selcall, selcall comprises:
Obtain the receiver as the radio paging signal of the control channel of selcall, this radio paging signal is expressed the geographical position;
With receiver coupling, be used to decipher control mark so that determine the controller of available honeycomb channel;
With the reflector controller coupling, that on the honeycomb channel of indicating, login cellular communication system by the control mark of radio paging signal;
Send state information to the wireless paging communication system from cellular communication system, so that the service centre of checking selcall;
On the control channel of wireless paging communication system, receive the receiver of radio call message;
With service centre coupling, be used on control channel, address and vector being transferred to selcall, guide selcall the honeycomb channel of cellular communication system into, so that receive the reflector of radio call message;
Selcall reads the mark in the radio paging signal, to determine whether the wireless paging communication system asks selcall to confirm its reception to address and vector;
Service centre sends radio call message to cellular basestation, so that response wireless paging communication system receives the received affirmation of indication vector from selcall, gives selcall the radio call transmission of messages on honeycomb channel; With
Radio call message is transmitted in the indicated position of the register information that cellular basestation is stored in by cellular communication system.
2. according to the wireless paging communication system and the cellular communication system of the described combination of claim 1, wherein when selecting calling device not login cellular communication system, the receiver of selcall is measured the signal strength signal intensity of radio paging signal, attempts to login again cellular communication system so that determine when.
3. according to the wireless paging communication system and the cellular communication system of the described combination of claim 1, wherein when selecting calling device to receive the geographical position of radio call, this geographical position is different from the geographical position that had before been received by selcall, and the receiver of selcall is logined cellular communication system again.
4. according to the wireless paging communication system and the cellular communication system of the described combination of claim 1, wherein receiver receives ACK address and non--ACK address, ACK address notification selcall is confirmed the reception of radio call message, and non--ACK address notification selcall is not confirmed the reception of radio call message.
5. according to the wireless paging communication system and the cellular communication system of the described combination of claim 4, the control mark of its middle controller inquiry radio paging signal, whether allow selcall to confirm the reception of radio paging signal to determine that cellular communication system loads, receive the ACK address with the response selcall.
6. according to the wireless paging communication system and the cellular communication system of the described combination of claim 5, wherein when receiving the ACK address, controller continuous review control mark is to determine when the reception of confirming radio call message.
7. according to the wireless paging communication system and the cellular communication system of the described combination of claim 1, wherein service centre sends the message of priority message and not transmission to selcall on the honeycomb control channel, and this selcall is communicated by letter on this honeycomb channel.
8. coordinate and the selective call communication system of selecting for the preliminary data channel of the usefulness of communicating by letter for one kind, comprising:
Be used for the reception plan and issue base station by a plurality of preliminary data communication systems couplings of the message of the selcall of address appointment;
With the data scheduler of base station and the coupling of a plurality of preliminary data communication system, the data scheduler comprises:
Message is categorized as the grader that is suitable in the preliminary data channel;
Coordination is suitable for transmitting the controller of the preliminary data communication system tabulation of this message;
Selection is suitable for transmitting the selector of the preliminary data channel of this message;
Controller to the selective call signal encoding that comprises address and vector;
On control channel, the selective call signal is transferred to the reflector of selcall; With
Send message to the preliminary data communication system so that communication link transmitting.
9. according to the described selective call communication system of claim 8, also comprise when selecting calling device to indicate this message not to be received the starter of transmission again of initiation message.
10. according to the described selective call communication system of claim 8, wherein grader determines that whether the length of message is greater than threshold value.
11. according to the described selective call communication system of claim 8, wherein selector produces and stores the tabulation of preliminary data channel.
12. according to the described selective call communication system of claim 8, wherein the selective call signal also comprises:
The address of identification selection calling device;
Specify the vector of the frequency of preliminary data communication system;
The agreement of recognition data structure;
Discern the message packet identifier of this message; With
Wait is from the time delay of the response of selcall, and the message corresponding to the message packet identifier that receives is indicated in this response on the preliminary data communication system.
CN 99804556 1998-02-27 1999-02-10 Communication system and method for selecting alternative frequencies Expired - Lifetime CN1192645C (en)

Applications Claiming Priority (4)

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US09/031,523 US5940756A (en) 1998-02-27 1998-02-27 Method for transmitting paging communication on a cellular communication system
US09/031,649 1998-02-27
US09/031,649 US5940757A (en) 1998-02-27 1998-02-27 Communication system and method for selecting alternative frequencies
US09/031,523 1998-02-27

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CN101984721A (en) * 2010-10-29 2011-03-09 中兴通讯股份有限公司 Constituted carrier control method in carrier aggregation
CN101395930B (en) * 2004-05-26 2011-11-30 摩托罗拉解决方案公司 A wireless communications network and method of operation thereof
CN107395298A (en) * 2017-06-30 2017-11-24 杭州清本科技有限公司 Spectral transformation means

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MY139033A (en) 2002-05-01 2009-08-28 Interdigital Tech Corp Point to multi-point services using shared channels in wireless communication systems
US9913249B2 (en) 2015-12-09 2018-03-06 At&T Intellectual Property I, L.P. Method and system for selective paging of wireless devices using a cellular broadcast service

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US5392452A (en) * 1992-11-27 1995-02-21 Motorola, Inc. Selective call signaling system with combined wide area paging and high data rate transmissions via radio telephone transceivers
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CN101395930B (en) * 2004-05-26 2011-11-30 摩托罗拉解决方案公司 A wireless communications network and method of operation thereof
CN101984721A (en) * 2010-10-29 2011-03-09 中兴通讯股份有限公司 Constituted carrier control method in carrier aggregation
CN101984721B (en) * 2010-10-29 2014-09-10 中兴通讯股份有限公司 Constituted carrier control method in carrier aggregation
CN107395298A (en) * 2017-06-30 2017-11-24 杭州清本科技有限公司 Spectral transformation means

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