CN1203487A - Wireless communication system and method utilizing wireline switches - Google Patents

Abstract

A personal access communication system (PACS) includes a wired exchanging bureaus, one or more intelligent internetwork connection exchange aggregate and plural radio port control units (RPCU), each RPCU has plural radio ports and provides digital wireless personal communication service. The structure and method of the system are adapted for intelligent internetwork connection exchange aggregate, as an intermediate platform, the system is connected between the public and personal exchange telephone networks by E1 or T1, and ISDN is made as RPCU, and then the interface gateway function can be realized. The IGSC also satisfies the advance intelligent network (AIN) function required by the PACS system and the call processing and control function. Compared with existing technology, the invention need not to improve the already set wired exchanging bureaus, and has AIN and ISDN abilities and T1 interface required by PACS system to provide PCS, in order to provide regionally mobile service, the IGSC also provides economic interface to the access manager/visitor position register and service control point/local position register.

Description

Utilize the wireless communication system and the method for wired exchange

Related application:

U.S. patent documents 4,698, in October, 839 1987, DeVaney etc. 4,955,050 September nineteen ninety Yamauchi5, in August, 040,177 1991, Martin etc. 5,157, in December, 5,274,694 1993 Lechner such as in October, 660 1992 Kuwahara etc. etc. 5,303, in June, 5,325,419 1994 Connolly such as in April, 287 1994 Laborde etc. etc. 5,440,613 August nineteen ninety-five Fuentes5,457,736 October nineteen ninety-five Cain etc. 5,490, in February, 146 1996 Walters5, in April, 506,887 1996, Emery etc. 5,519, in July, 5,537,610 1996 Mauger such as in May, 697 1996 Fujita etc. etc. 5,542, in August, 5,548,631 1996 Krebs such as in July, 094 1996 Owada etc. etc. 5,574, in January, 5,592,533 1997 McHenry such as in November, 771 1996 Driessen etc. etc. 5, in January, 594,780 1997 Wiedeman etc.

Other open source literature

[1] " personal access communication system-air-interface standard (j-STD-014) ", the T1/TIA connection technique committee, June nineteen ninety-five, the U.S.

[2] " AIN 0.2 switching equipment ", TA-NWT-001298, Bellcore publishes

[3] " wireless access communication system (WACS) front page common standard " TA-NWT-001212, in July, 1992 distribution, Bellcore publishes

The present invention relates to a kind of wireless and mobile communication system.More precisely, it is a new system configuration of having improved personal access communication system, and it is compatible mutually to make it and interchanger make public switch telephone network incompatible with the North America standard and/or that do not have advanced intelligent network and a comprehensive Switched digital network ability of ANSI.

At present, no matter the business telephone service is the service of fixedly moving, though be not all but also be that great majority all use independently cable telephone network (wired exchange) and radiotelephony network (comprising mobile station).Therefore, telephone operator has to dispose two cover networks, so that fixing and mobile phone service to be provided.Thereby the client has to use fixed telephone number and Mobile Directory Number.In order to quicken to realize with a telephone network to fixing and move the service that provides, for the personal communication service that is forming (PCS), U.S.'s telecommunications industry has proposed personal access communication system (PACS) standard, its specification requirement and standard are compatible and be applicable to that North America (comprising Canada) PSTN (public switch telephone network) and relative wired exchange are (referring to document [1] and the United States Patent (USP) 5 of authorizing Cain etc., 457,736).The exclusive characteristics of PACS system are that wired exchange is changed, and think that mobile phone provides service.With existing fixed telephone service ability, PACS becomes the ability with integrated wireline and radio communication veritably.From the angle of economy, PACS also has glamour, because worldwide be provided with a large amount of wired exchange.Utilize the exchange of these settings to provide mobile service can on mobile station, save huge investment.

These technology of PCAS and characteristics economically are developed it in the world rather than only in the North America.Yet,, therefore,, stoped the market of PACS beyond entering in the North America at present because the defined standard of PACS has only been considered the ability of North America PSTN and relative wired exchange.Especially present PACS system has several requirements to force at wired exchange.

At first, wired exchange must have service exchange point (SSP) ability, and promptly it must have the software that advanced intelligent network (AIN) discharges 0.2 version, and is thereon resident, provide and the AIN message trigger and the routing capabilities that need, so that communicate with the SCP that is positioned at PSTN (SCP).Secondly, wired exchange must have comprehensive exchange digital network (ISDN) BRI/PRI (the basic fast interface/fast interface of master) ability, the software of resident country-ISDN version 3 on exchange.The 3rd, wired exchange may require to provide the ability that switches to another unit from a radio port control unit (RPCU) coverage for cell phone.To switch another kind of method be to realize this function in RPCU to RPCU in this was also referred to as.At last, wired exchange must be supported the signaling system 7 of American National Standards Institute's definition) ((being also referred to as CCS7-common channel signalling system 7) is as transmit protocol of messages between PACS system and various PSTN unit for SS7.

For above-mentioned reasons, the PSTN (comprising exchange) that does not satisfy these requirements can not use the PACS system.In order to overcome these technical difficulties, traditional method is to wait for, manufacturer develops necessary hardware and software for these exchanges that do not satisfy above-mentioned requirements up to exchange.Then, telephone operator can buy these hardware/softwares and is installed on the exchange.This method requirement switch is sold the telephone operator that advocates peace has huge input on finance and resource.Also must take much time and realize it.Thereby this method is in the telecommunication market that all can not satisfy quick growth aspect cost and the time prospect.

If the PACS system is developing into beyond the North America, this situation can not be avoided.This situation ascribes ANSIISDN BRI/PRI to and in fact carries on the T1 main line, but in world markets, most of PSTN use the E1 main line.In addition,, the SS7 interface of PSTN is based on ITU/CCITT standard rather than ansi standard in world markets.Therefore, the PACS system is unsuitable for being extended to beyond the North America technically at present.

The present invention proposes a kind of new system and method, and it has different structures and network interface, has solved above-mentioned all problems.Here the new system of Jie Shiing can make it develop into world wide.It has also realized being the identical purpose of PACS system design,, provides fixing and mobile phone service that is high quality and low cost.

The object of the present invention is to provide a kind of simple and system configuration and method cheaply,, developed the PACS system simultaneously to solve needed function and capacity and relative PSTN interface on the exchange.And the advantage of utilizing system of the present invention is the huge investment and the plenty of time that need not be associated with the needed software and hardware of exploitation, has improved wired exchange, with exploitation PACS.From LEC (LEC Local Exchange Carrier office) aspect, the present invention can make their wired exchange of being provided with of LEC full use that the service of moving is provided.

The present invention is relating to improved system and method aspect the personal access communication system standard of T1/TIA joint technical committee definition, and it uses, and connection commutative set zoarium (IGSC) solves wired function of exchange and communication interface requirement between one or more intelligent networks.Especially, IGSC provides call treatment and the CCF that is similar to SSP, to transmit message between radio subsystem and access-in management person/visitor location register (AM/VLR) and SCP/HLR (Home Location Register).IGSC also changes interface protocol between E1 and ISDN BRI/PRI.At last, IGSC can support mobile phone is switched to another regional function from a radio port control unit coverage.The present invention can make the PACS technology develop into world wide fast and at low cost rather than in North America market.

Fig. 1 is to use the block diagram of the embodiment of wireless communication system of the present invention;

Fig. 2 is flow chart and a message diagram of setting up the incoming call of subscriber unit;

Fig. 3 sets up the flow chart and the message diagram of breathing out from subscriber unit;

Fig. 4 is flow process and the message diagram of setting up from a subscriber unit to the calling of another subscriber unit.

Main purpose of the present invention provides a kind of system and method for radio communication, and it utilizes fixed cell [F1] to provide Landline telephone service and utilize PACS as descending technology provide with mobile phone [F2] Information Mobile Service.

Another object of the present invention is to provide a kind of above-mentioned system and method, and it can be with existing wired exchange Office, be not subjected to it at present whether with North America standard or ITU/CCITT standard compatibility so that improve wired exchange make it with The compatible network minimal of stating that leads of North America PSTN T1 and ANSI-ISDN BRI/PRI interface standard.

Another purpose of the present invention is to provide a kind of above-mentioned system and method, and it makes improves existing wired exchange AIN, the demand of national ISDN and ANSI-SS7 signaling protocol ability is minimum or eliminate.

A further object of the present invention is to provide a kind of above-mentioned system and method, connect commutative set zoarium (IGSC) [B] between its employing intelligent network and realized the handoff functionality of mobile phone mobile radio station from a RPCU area of coverage to another district, make exchange need not to know this situation of switching, therefore avoided improvement exchange, and the handoff functionality based on exchange is provided.

To achieve these goals, and other purpose, characteristics and advantage, the system of Jie Shiing is at PSTN[A here] in wired exchange [A1] and wireless subsystem [C] in radio port control unit (RPCU) [C1] between adopt " being connected the commutative set zoarium between intelligent network " (IGSC) [B] (referring to Fig. 1).Still keep other assemblies, for example the desired AM/VLR[D of PACS normal structure] (access-in management person/visitor location register), SCP/HLR[E] (SCP/Home Location Register), radio port [C2] (RP) and subscriber unit [F] (SU).

As disclosing a kind of special IGSC[B here] implementation structure be that itself is divided into two parts, promptly be divided between intelligent network and connect exchange structure (IGSF) [B1] and host computer [B2].This structure shows ins and outs of the present invention.IGSF[B1] and host computer [B2] between interface protocol [15] use the TCP/IP of Ethernet.If requirement also can be used other general protocol, RS-232 for example, that X.25 goes up is asynchronous etc.IGSF[B1] be switching fabric able to programme, it has supports to have the communication protocol of wired exchange [A1], that is, the interface protocol of wired exchange [A1] that interface [11] should be is as requested supported E1 or T1.Because E1 and T1 interface worldwide can be widely used in wired exchange, so this requirement can easily realize in wired exchange [A1] side.Aspect wireless subsystem [C], in order to meet PACS standard, IGSF[B1] should support the ANSI-ISDNBRI/PRI on the T1 interface [12], with RPCU[C1] communicate by letter.Yet, launching for off-gauge PACS, if RPCU[C1] and interface [12] on the side is preferable, it can support other International ISDN on E1.

The present invention will illustrate such a case, that is, IGSC[B] support to be connected to the E1/T1 Interface [11] on wired exchange [A1] and to be connected to RPCU[C1] T1 interface [12] on ANSI-ISDN BRI.For more accurate, IGSF[B1] tandem exchange's function is provided, E1/T1 Interface [11] is transformed into RPCU[C1 from wired exchange [A1]] ANSI-ISDN interface [12], vice versa.This structure has been arranged, and wired exchange [A1] no longer needs T1 and ISDN bri interface ability.IGSC[B] also by ANSI-ISDN line and a plurality of RPCU[C1] communicate by letter, each isdn line provides two B channels for speech, provides a D channel for data-message transmits.And, IGSC[B] should carry out call treatment and the function relevant with calling out control.

On market, can obtain multiple commercial IGSF[B1], they can easily be used for satisfying or carrying out small change and just can satisfy described interface requirement.All the other requirements of above-mentioned announcement need realize on master computer [B2].Adopt IGSF[B1] greatly reduce and improve exchange to meet the expense that the North America standard is involved.Because wired exchange of the regional development beyond the North America is mostly used the E1 interface, does not have the ANSI-ISDN ability, so this method can make them, even ITU/CCITT exchange is also used the PACS system.

In order further to disclose the present invention, the system that is made up of wired exchange [A1] generally resides in public to realize (wired) telephone service in the central office.Wired exchange [A1] of the announcement does not here need to be AIN, and on the contrary, this is that the standard A pcs system is desired.More precisely, wired exchange [A1] needs not to be the SSP that AIN triggering and message routing capabilities are provided.And wired exchange [A1] needs not to be the exchange of ISDN energy usefulness.Relaxed this two requirements, the present invention greatly reduces the expense of using the PACS technology.

In the structure that is disclosed, AM/VLR[D] pass through SS7[17] IS-41 message interface and SCP/HLR[E] communicate.AM/VLR[D] also support provided for radio resources management, mobile phone orientation management, switching, call treatment and keep the user distribution data subset.AM/VLR[D] and RPCU[C1] between interface be that the personnel of this technical field are known, be also referred to as CAM[14], its communication is the TCP/IP on LAN/WAN (this locality/wide area network), or relevant the delivering a letter of the non-calling of ISDN by ISDN D channel [12].Under latter event, message by physical link [13] from IGSC[B] be sent on the AM/VLR.

In order to store the positional information of user's service distribution data and cell phone [F1], SCP/HLR[E] by SS7 network link [18] and IGSC[B] communicate, provide call routing information for calling out to send.If requirement, interface [17] and [18] also can replace with TCP/IP LAN/WAN.

With reference to Fig. 1, IGSC[B] master computer [B2] and AM/VLR[D] carry out electronic communication, to transmit message.X.25 or various other relevant agreement their interface [15] can be TCP/IP.

RPCU[C1] be connected on a plurality of RP each RP[C2] cover the zone of appointment, for the terminal use who uses mobile phone [F1] or fixed cell [F2] provides the service of moving (being generically and collectively referred to as SU-subscriber unit [F]).At RPCU[C1] and RP[C2] between, interface [19] can be T1, E1, HDSL, DSL etc.RP[C2 in its overlay area] communicate by air interface [16] and subscriber unit [F], this interface is called the A interface, in document [1] comprehensive definition is arranged.

Connecting commutative set zoarium [B] between intelligent network must provide call treatment, call out control and the function relevant with SSP.Describe operation of the present invention below in detail.

As shown in Figure 2, as PSTN[A] in telephone [A2] to SU[F] on terminal send one when calling out, telephone [A2] sends a call number N (1), PSTN is caught be connected to IGSF[B1] on wired exchange [A1].Wired exchange [A1] is sent to IGSF[B1 calling out N (1) by the E1 main line], then, IGSF[B1] it is sent to master computer [B2].Master computer [B2] is to AM/VLR[D] the inquiry route instruction.Then, AM/VLR[D] instruction RPCU[C1] utilize NCAS message by the connection IGSF[B1] and RPCU[C1] ISDND channel [12] to SU[F] position.RPCU[C1] to SU[F] position, and receive SU[F] response, RPCU[C1] utilize NCAS message to respond AM/VLR[D with routing iinformation by ISDN D channel [12]].At AM/VLR[D] responded master computer [B2] afterwards with routing iinformation, master computer [B2] is caught available T1 equipment, and instruction IGSF[B1] utilize and serve RPCU[C1] set up isdn call by suitable ISDN B channel [12].One receive the service RPCU[C1] ISDN ALTER (change) message, IGSF[B1] respond telephone [A2] with the tinkle of bells.At SU[F] answered after this calling RPCU[C1] to IGSF[B1] send ISDN CONNECT (connection) message, then, IGSF[B1] recall signal is sent to master computer [B2].Master computer [B2] instruction IGSF[B1] RPCU[C1] T1 of side is connected to the E1 of wired exchange [A1] side, with at telephone [A2] and terminal SU[F] between set up talk path.

As shown in Figure 3, as SU[F] to PSTN[A] in telephone [A2] send when calling out SU[F] on air interface [16], send calling with call number N (1), and arrive the RPCU[C1 in the wireless subsystem] on.RPCU[C1] upward the NCAS message to N (1) request call is sent to IGSF[B1 at ISDN D channel [12]].NCAS data relaying in this message is given master computer [B2], gives AM/VLR[D this data relaying then].In response, AM/VLR[D] NCAS message is sent to host computer [B2], with originating call.NCAS data relaying in the response message is given IGSF[B1], then data are gone up relaying at ISDN D channel [12] and give the RPCU[C1 that starts].RPCU[C1] by suitable ISDN D channel [12] on T1 to IGSF[B1] send the ISDN SETUP (foundation) contain N (1), call out beginning.IGSF[B1 then] tell master computer [B2] call number N (1).Master computer [B2] is caught useful E1, and instruction IGSF[B1] catch E1 equipment.Then, IGSF[B1] respond SU[F with the tinkle of bells], and to PSTN[A] the output calling.PSTN[A] behind the signal that receives telephone [A2], to IGSF[B1] send recall signal, receive and finish calling.IGSF[B1] this message is offered master computer [B2], instruct IGSF[B1 then] connect T1 and E1 equipment, with at the SU[F that starts] and telephone [A2] between set up the call conversation path.

As shown in Figure 4, as SU1[F] to another SU2[F] send when calling out SU1[F] send calling on the interface [16] aloft with ringing number N (1), and arrive the RPCU1[C1 in the wireless subsystem].RPCU1[C1] upward the NCAS message to N (1) request call is sent to IGSF[B1 at ISDND channel [12]].NCAS data relaying in this message is given master computer [B2], gives AM/VLR[D the data relaying then].In response, AM/VLR[D] send NCAS message to master computer [B2], start so that call out.NCAS data relaying in the response message is given IGSF[B1], then, these data are gone up relaying at ISDN D channel [12] give Initial R PCU[C1].RPCU1[C1] by suitable ISDN D channel on T1 to IGSF[B1] send the ISDN SETUP (foundations) contain N (1), to begin calling.IGSF[B1 then] inform master computer [B2] call number N (1).Master computer [B2] is from AM/VLR[D then] the inquiry route instruction.AM/VLR[D] instruction RPCU2[C1] utilize NCAS message by the connection IGSF[B1] and RPCU2[C1] ISDND channel [12] to SU2[F] position.RPCU2[C1] to SU2[F] position, at SU2[F] response after, RPCU2[C1] utilize NCAS message, respond AM/VLR[D by ISDN D channel [12] with routing iinformation].At AM/VLR[D] responded master computer [B2] afterwards with routing iinformation, master computer [B2] is caught available T1 equipment, and instruction IGSF[B1] use target RPCU2[C1 by suitable ISDN B channel [12]] carry out isdn call foundation.Receiving target RPCU2[C1] behind the ISDN ALTER (change) that comes, IGSF[B1] respond SU1[F with the tinkle of bells].After SU2 has answered this calling, RPCU2[C1] to IGSF[B1] transmission ISDN CONNECT (connection) message.IGSF[B1 then] transmit recall signal to master computer [B2].Master computer [B2] instruction IGSF[B1] be respectively RPCU2[C1] with RPCU1[C1] be connected T1 and T1, at the SU1[F that starts] and terminal SU2[F] between set up talk path.

As implied above, IGSC[B] solution of message route of the PACS system requirements that has satisfied various calling schemes that proposes is a kind of scheme preferably.For person skilled in the art, also can carry out multiple variation.Especially, at RPCU[C1] with AM/VLR[D] between the information that sends can be TCP/IP or X.25 or other relevant agreement.If RPCU[C1 like this, then] and AM/VLR[D] between the message route do not need to pass through IGSC.And actual SS7 network has two versions, i.e. ANSI and ITU version, it means AM/VLR[D] and SCP/HLR[E] must support these two versions, in the SS7 network, to transmit message.

The inside RPCU switching capability of mobile phone also can be by IGSC[B] provide.Its operation be when mobile phone when the coverage that RPCU1 covers moves to another RPCU2 coverage, mobile phone [F1] notice RPCU1, then, by RPCU1 to IGSC[B] request establishes a connection to another ISDN B letter [12] of RPCU2.Setting up B channel [12] afterwards, RPCU1 can switch, and notice IGSC[B] the connected previous B channel of disconnection.

The present invention described herein only concentrates on PSTN.For the person skilled in the art, they can recognize that native system also can be applied to the personal call net, for example the network etc. in net, the building in the school.

Claims (6)

1, a kind of improved personal access communication system (PACS) uses existing telephone network, and for the user with mobile phone or fixed cell provides comprehensive fixing and mobile communication service, described system comprises:

Wired exchange, it can be communicated by letter with telephone network by E1 or T1;

Connect commutative set zoarium (IGSC) between one or more intelligent networks, be connected on described wired exchange by E1 or T1;

One or more radio port control units (RPCU), connect on the commutative set zoarium being connected on T1 or the E1 between intelligent network by ISDN BRI/PRI, each radio port control unit also comprises a plurality of radio port (RP), and each radio port provides wireless service for the user in its appointed area;

SCP (SCP) with Home Location Register (HLR) of storage user's service distribution data and mobile phone location information, described SCP/HLR is connected the fit communication of commutative set by between SS7 signaling network and intelligent network, transmits routing iinformation, to send calling;

Access-in management person/the visitor location register (AM/VLR) of provided for radio resources management, mobile phone location management, switching harmony, call treatment and one group of user's service distribution data is provided, and described access-in management person/visitor location register utilizes the relevant signaling (NCAS) of the non-calling of ISDN to carry out electronic communication with RPCU on ISDN D channel by direct link or by connecting the commutative set zoarium between intelligent network.

2, the system as claimed in claim 1 is characterized in that, described wired exchange needn't have AIN or ISDN ability.

3, the system as claimed in claim 1, it is characterized in that, connecting commutative set zoarium (IGSC) between described intelligent network sets up between wired exchange and radio port control unit, connect the fit predetermined interface of commutative set between described intelligent network and communicate interface conversion wired exchange support, convert the interface that the radio port control unit is supported to, vice versa.

4, system as claimed in claim 2 is characterized in that, connects the commutative set zoarium between described intelligent network and can realize that AIN triggers, and communicates by letter with SCP/HLR.

5, system as claimed in claim 2, it is characterized in that, connect the commutative set zoarium between described intelligent network and utilize suitable interface protocol can handle the relevant signaling message of the non-calling of ISDN that between radio port control unit and access-in management person/visitor location register, transmits.

6, system as claimed in claim 2 is characterized in that, connecting the commutative set zoarium between intelligent network must provide call treatment and CCF, and supports internal radio port controlling unit to switch.

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