CN1306831C

CN1306831C - Method for implementing signaling system in wireless local telephone system

Info

Publication number: CN1306831C
Application number: CNB011455748A
Authority: CN
Inventors: 刘辉; 马向利; 陈兴华; 彭江萍
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2001-12-25
Filing date: 2001-12-25
Publication date: 2007-03-21
Anticipated expiration: 2021-12-25
Also published as: CN1429034A

Abstract

The present invention relates to a method for implementing a signaling system in a wireless local telephone system. An interface A' is formed between PRCU in GSM and PHS by a point-to-point direct-coupled mode, and a calling party, a called party, position update and switching procedures among the PHS, the RPCU and the GSM to keep a standard STD28 protocol between PS and CS invariant, wherein a calling procedure comprises mobile phone initiation calling, authentication, ring back tone listening and off-hook of the called party, a called procedure comprises paging of the called party, authentication, ring of the called party and off-hook of the called party, the position update comprises mobile initiation position update, authentication and position update, and the switching procedure comprises initiation switching, old RCPU telephone channel dismounting and new RCPU telephone channel succession. The present invention introduces the GSM to provide a mobility management function and absorb PS systems, CS systems, etc. through an interface PHS system, and the PS systems, CS systems, etc. are already applied on a large scale. By the signaling system provided by the present invention, operation with high efficiency of the interface procedure between the RPCU and the GSM can be guaranteed, and the existing system and equipment are compatible in a large degree.

Description

The implementation method of signaling system in a kind of wireless local telephone system

Technical field

The present invention relates to wireless local telephone system, more particularly, relate to a kind of professional method that signaling interface between side and the wireless access side is provided that in wireless local telephone system, realizes.

Background technology

GSM (global system for mobile communications) is used widely all over the world, the base station of the Cellular Networks in the gsm system is general large-scale and expensive, height can reach tens meters, the service area radius can reach tens kilometers, and traditional Cellular Networks communication speech quality is generally very low, and transmission rate is between 8 kilobits/second to 13 kilobits/second, simultaneously, traditional Cellular Networks communication also is subjected to the traffic quantitative limitation that can carry, and when the user increased, it is crowded that system becomes.For this reason, a kind of new wireless communication standard was fast-developing in recent years, for example frequency range is carried out the microcellulor standard of radio communication near 1990MHz, comprising: the PACS of the U.S. (individual incoming communication system), the DETECT (digital enhanced cordless telecommunications system) in Europe, the PHS (personal hand held phone system) of Japan etc.

Chinese invention patent 96180209 discloses " supporting the method and system of PACS with the GSM mobile switching center ", this patent is based on the PACS standard, PACS and GSM are carried out comprehensively, make the PACS system realize micro cellular system by interconnecting with public switched telephone network.PACS has following advantage compared with gsm system: the base station is little and cheap, installs very conveniently, and transmitting power is little, and the emission radius generally is no more than several kilometers; Its narrow band transmission form forms than multifrequency point in the 10MHz subband, and user capacity is relatively large; Better, the various data service bandwidth of speech quality (32 kilobits/second) higher (64 kilobits/second); But following shortcoming is arranged also: can only support the user that moves than low velocity; Because service area is little, switches more frequent.

Above-mentioned patent also makes it compatible mutually with GSM by the agreement of revising the PACS system.From the situation of current practical development, personal hand held phone system (PHS) development of Japan is ripe, and obtains large-scale application on Japan and China and other places, and PHS system and gsm system compatibility mutually have been the objective demands in market.PHS and PACS belong to same protocol architecture, above-mentioned patent system is suitable for the situation that PACS is changed to PHS, but PS (personal terminal in the PHS system, subscriber unit among the corresponding PACS, following subscriber unit is called for short SU) and base station (hereinafter to be referred as CS), radio port (hereinafter to be referred as RP) among the corresponding PACS) by Sanyo, Hitachi, KYOCERA, in many companies large-scale production such as emerging, therefore come the method for compatible GSM infeasible by revising among the PHS between PS, CS, the RPCU agreement.But prior art not can be good at addressing this problem.

Summary of the invention

The technical problem to be solved in the present invention is how to realize the compatibility of PHS system and gsm system on the interface protocol STD28 basis that keeps between PS and the CS.The core concept that addresses this problem is to realize the compatibility of PHS and GSM by the interface between modification radio port control unit (" radio port control unit " is hereinafter to be referred as RPCU) and the GSM.More particularly, the present invention be will be in wireless local telephone system RPCU and professional provide propose between the side GSM a kind of efficiently, signaling process that function is strong, low and the function of this signaling process complexity meets the demands, and the efficient height can effectively improve the stability of a system and power system capacity.

The inventive method based on communication system be the communication system of PHS and GSM compatibility, wherein the PHS system comprises PS, CS, RPCU, adopt point-to-point associated mode between RPCU and the GSM, No. 7 MTP parts in the A interface of former GSM can be simplified the Route Selection part; Signaling processes such as encryption in the former A interface can be simplified; At switching the situation of sending, sending from new base station controller the PHS system from old base station controller in the gsm system, need to revise interface flow process between PHS and the RPCU.Through above-mentioned processing, form perfect, A ' interface rules are promptly revised the caller between PHS and RPCU and the gsm system efficiently, called, the position is upgraded, handover procedure, to keep standard STD28 (the Japanese PHS wireless industrial association criterion) agreement between PS (personal terminal) and the CS (base station) constant, wherein said caller rules comprise that mobile phone makes a call, authentication, listen ring-back tone and called off-hook, described called rules comprise that paging is called, authentication, called terminal ringing, called off-hook, described position is upgraded and is comprised mobile phone initiation position renewal, authentication, the position is upgraded, and described handover procedure comprises to be initiated to switch, remove old RCPU speech channel, new RCPU speech channel continues.

In the described location updating procedure in said method, described mobile phone is initiated the position renewal and is meant, when when mobile phone power-on, finding the inconsistent or PS of the PA that sends in PA in the mobile phone and the air interface from a PA to another PA, upwards initiate position updating process by CS, be embodied in A ' interface for initiating location update request message to the GSM network side; Described authentication is for guaranteeing that PS is a validated user, before follow-up flow process, to differentiate the user earlier, the place of differentiating the result can be at RPCU or attaching position register HLR, send the message that requires to carry out based on the authentication of same random number, key to PS, HLR respectively, and the result of calculation of same algorithm sent to RPCU by message respectively, authentication is finished when the RPCU comparative result is consistent; After described position was upgraded and is meant that authentication is finished, RPCU notified HLR, and HLR revises database, the new PA of registration respective user.

In the described caller rules in said method, described mobile phone has been initiated to exhale and has been meant that the cellphone subscriber imports called number, press when sending key, and starting caller process, the RPCU in the described A ' interface sends offhook message to GSM and comprises called number; Described authentication is based on same random number, key etc. and sends the message that requires authentication to PS, HLR respectively, and the result of calculation of same algorithm is sent to RPCU by message respectively, finishes authentication when the RPCU comparative result is consistent; The place of differentiating described result of calculation can be at RPCU or attaching position register HLR; Described tin of ring-back tone be meant at GSM network side analyzing called number, as be the outbound user, transmits beep-page message, as be the native system user, the starting called flow is after called subscriber's ring, postback called ALERTING message by described A ' interface to PS, the called subscriber listens ring-back tone; After described called off-hook was meant that the called subscriber hears ring, behind the off-hook, the speech channel that continues promptly entered talking state.

In the described called rules in said method, described paging is called be during from not in the know squeezing into or through mobile phone make a call and authentication after, network side is initiated paging by the air interface among the described interface A ' to PS, after mobile phone is received, initiates response; Described called terminal ringing is after authentication is finished, the called mobile phone ring, and by described A ' interface prompting caller; Described called off-hook is that the called subscriber hears off-hook after the ring, the RPCU corresponding speech channel that continues, and tell network side called off-hook, the speech channel that continues after caller is received, both sides' conversation.In the described handover procedure in said method, described initiation is switched and is meant, when the RPCU of the user who is conversing under a PA moves to RPCU under another PA, passes through A ' interface and initiates handoff request to network side; The old RCPU speech channel of described dismounting is to go up corresponding process by network side to the old RPCU in mobile phone place to initiate release message, discharges old speech channel and old call proceeding; The described new RCPU speech channel that continues is after release is finished, and passes through the new RPCU of A ' notice incision, and handoff procedure is finished in the new speech channel that continues.

The implementation method of signaling system in a kind of wireless local telephone system that enforcement the present invention proposes, by introducing GSM so that the mobile management function to be provided, introduce the systems such as PS, CS that used on a large scale by introducing the PHS system, utilize signaling system provided by the invention, can be in the effective operation that keeps guaranteeing on the present interfaces agreement basis of invariable between PS and the CS interface flow process between RPCU and the GSM, and compatible to greatest extent existed system and equipment.

Description of drawings

Fig. 1 is the logical flow chart based on the position updating process of the inventive method;

Fig. 2 is for to set up flow chart based on the caller of the inventive method;

Fig. 3 is the called logical flow chart of setting up process;

Fig. 4 is the logical flow chart based on the handoff procedure of the inventive method.

Embodiment

Method proposed by the invention based on communication system unlike the prior art be to replace PACS with PHS, involved part comprises PS, CS, RPCU, GSM network etc., consider the situation that the PHS systematic large-scale is promoted, keep the standard STD28 agreement between PS and the CS not change.For this reason, the present invention selects to make it become A ' interface protocol by revising the former A interface protocol of RPCU and GSM network, realizes the fusion between PHS and the GSM.Message transfer part in the A interface protocol (hereinafter to be referred as MTP) in the present invention realizes, because RPCU and GSM network side are direct route, can be simplified the Route Selection part.To the several relatively independent calling procedure in the communication: the modification that position renewal, caller, called, switching etc. are done, in being embodied on the above-mentioned A ' interface corresponding rules and realizing.Be described as follows one by one:

* position updating process

Step 1: mobile phone is initiated the position and is upgraded

Step 2: authentication

Step 3: the position is upgraded

Step 1 wherein, when when mobile phone power-on, finding the inconsistent or PS of the PA that sends in paging zone (hereinafter to be referred as PA) and the air interface in the mobile phone (comprising not mobile mobile the causing that causes or conversing under talking state), upwards initiate position updating process by CS from a PA to another PA.Be embodied in A ' interface for initiating location update request message to the GSM network side.

Step 2 wherein, for guaranteeing that PS is a validated user, before follow-up flow process, to differentiate the user earlier, the place of differentiating the result can be in RPCU (or attaching position register, be called for short HLR), and it sends the message that requires authentication to PS, HLR respectively, they are based on same random number, keys etc. also send to RPCU by message respectively by same algorithm computation result, and authentication was finished when the RPCU comparative result was consistent.The authentication of following process is similar.

To step 3, after authentication was finished, RPCU notified HLR, and HLR revises database, the new PA of registration respective user.

* caller process

Step 1: mobile phone has initiated to exhale

Step 2: authentication

Step 3: listen ring-back tone

Step 4: called off-hook

To step 1, the cellphone subscriber imports called number, press when sending key, and starting caller process, A ' interface RPCU sends offhook message to GSM, comprises called number.

To step 2, co-located renewal process authentication.

To step 3, GSM network side analyzing called number, as be the outbound user, to transmit beep-page message, as be the native system user, the starting called flow after called subscriber's ring, passes through A ' interface and postbacks called ALERTING message to PS.The called subscriber listens ring-back tone.

To step 4, after the called subscriber heard ring, behind the off-hook, the speech channel that continues promptly entered talking state.

* called process

Step 1: paging is called

Step 2: authentication

Step 3: called terminal ringing

Step 4: called off-hook

To step 1, during from not in the know squeezing into or through above after the step 1, two of caller process, network side passes through A ', air interface is initiated paging to PS, after mobile phone is received, initiates to respond, and promptly enters step 2.

To step 2, co-located renewal process authentication.

To step 3, after authentication is finished, the called mobile phone ring, and pass through A ' prompting caller.

To step 4, after the called subscriber hears ring, the corresponding speech channel that continues of off-hook, RPCU, and tell network side called off-hook.After caller is received, the speech channel that continues, both sides' conversation.

* handoff procedure

Step 1: initiate to switch

Step 2: remove old RCPU speech channel

Step 3: new RCPU speech channel continues

To step 1, when the RPCU of the user who is conversing under a PA moves to RPCU under another PA, switch, pass through A ' interface and initiate handoff request to network side.

To step 2, network side is gone up corresponding process to the old RPCU in mobile phone place and is initiated release message, discharges old speech channel and old call proceeding.

To step 3, after step 2 discharges and to finish, pass through the new RPCU of A ' notice incision, its new speech channel that continues, handoff procedure is finished.Below, further combined with the realization of description of drawings interface flow process of the present invention, standard STD28 protocol section between PS and the CS wherein, the relevant criterion agreement is please referred in the standard A interface section of GSM.Wherein relate to interface between RPCU and the GSM network side, the encryption flow of the A interface section of former GSM is simplified in A '.

Realization flow figure with reference to the position updating process shown in the figure 1.When mobile phone power-on, find that PA changes or can initiate position updating process during from a lane place to another lane place.At first required to carry out location registers (Rigster) to RPCU by CS, RPCU passes through A ' interface and sends authentication (GetKey) message to GSM, has cellphone subscriber's sign psid (the personal hand-held terminal iidentification of a mobile phone of unique representative) in the message header.After the GSM side is finished authorizing procedure, send authentication to RPCU and confirm (GetKeyAck) message, return authentication random number, authentication calculations result and key, carry out authentication for RPCU and judge usefulness.RPCU wants the authentication calculations result by sending out Facility message to the PS side, and PS then returns another result of calculation with Facility by calculating such as authentication random number, keys, if RPCU relatively the both sides result conform to then authentication is passed through.After the authentication success, RPCU sends position updating request (LocUpReq) message to GSM, has the lane place PA at the current place of user, the information such as particular location on the RPCU of place in the message body.After operation is upgraded in completing place, GSM side data storehouse, send the position to RPCU and upgrade confirmation (LocUpReq Ack) message.RPCU returns Release Complete message to the PS side, and the notice position is upgraded and completed successfully.

With reference to figure 2, further specify the implementation flow chart that rules are set up in caller.At first, RPCU sets up (Setup) message to the GSM forwarded call, transmits the PA at calling subscriber place, the called number of dialing, and the bearing capacity and the supplementary service information that are used for bearer service and supplementary service to GSM; GSM returns the circuit of authenticating result and distribution.RPCU sends access to GSM and finishes (AccessComp) message by behind the authentication process of similar Fig. 1, has the details of the equipment at user place in the message.GSM sends called terminal ringing (Alerting) message to caller RPCU after the called subscriber sends the ring indication.After GSM receives called offhook message, send connection (StartConv) message to caller RPCU.Wherein can have supplemental services for information about in the connection message.The PS side receives that the connection speech channel of connect message (Connect) back begins conversation.

With reference to figure 3, the called implementation of setting up rules is described.At first send call setup (Setup) message to RPCU, transmit PA, calling number, called number and bearing capacity and the supplementary service information at called subscriber place to RPCU by GSM; The RPCU paging sends authentication request (GetKey) message to GSM behind the called subscriber, GSM returns authentication and confirms (GetKeyAck) message; Authentication process through similar Fig. 1.After RPCU finishes authentication and passes through, send to insert to GSM and finish (RingAck) message, have the details of user place device location in the message; After the called mobile phone ring, RPCU sends called ring (Alerting) message to GSM; RPCU sends to GSM and connects (Connect) message behind called subscriber's off-hook, and RPCU finishes user session and continues.

With reference to figure 4, further specify the realization handover procedure.Switch when taking place, the RPCU2 of incision sends handoff request (HandOverReq) message, the information such as lane place PA that the report of user place is new to GSM; GSM finishes and switches the back and send switching authentic (HandOverAck) message to incision RPCU2, transmits new circuit and distributes to the incision switching and continue; And the new PA of modification data-base recording.Simultaneously, GSM sends release (Disconnect) message to cutting out RPCU1, fills in release cause; Cutting out RPCU1 returns to discharge and finishes (ReleaseComp) message.

The call flow that the inventive method relates to has more than been described.In the practical application in the wireless local telephone system capacity, telephone traffic all very big, this signaling system has been finished the sequential relationship of various callings with succinct effective and efficient manner, and stable operation, the expansion capacity of whole system had big meaning.

Claims

1, the implementation method of signaling system in a kind of wireless local telephone system, described wireless local telephone system comprises gsm system, PHS system with described gsm system compatibility, wherein said PHS system comprises PS, CS, RPCU, it is characterized in that, may further comprise the steps: between described GSM and described RPCU, adopt point-to-point associated mode to form interface A ', revise the caller between PHS and RPCU and the gsm system, called, the position is upgraded, handover procedure, to keep the standard STD28 agreement between PS and the CS constant, wherein said caller rules comprise that PS makes a call, authentication, listen ring-back tone and called off-hook, described called rules comprise that paging is called, authentication, called terminal ringing, called off-hook, described position is upgraded and is comprised that PS initiates the position and upgrades, authentication, the position is upgraded, and described handover procedure comprises to be initiated to switch, remove old RCPU speech channel, new RCPU speech channel continues.

2, according to the implementation method of signaling system in the described wireless local telephone system of claim 1, it is characterized in that, in described location updating procedure, described PS initiates the position renewal and is meant, when when PS starts shooting, finding the inconsistent or PS of the PA that sends in PA among the PS and the air interface from a PA to another PA, upwards initiate position updating process by CS, be embodied in A ' interface for initiating location update request message to the GSM network side; Described authentication is for guaranteeing that PS is a validated user, before follow-up flow process, to differentiate the user earlier, the place of differentiating the result can be at RPCU or attaching position register HLR, send the message that requires to carry out based on the authentication of same random number, key to PS, HLR respectively, and the result of calculation of same algorithm sent to RPCU by message respectively, authentication is finished when the RPCU comparative result is consistent; After described position was upgraded and is meant that authentication is finished, RPCU notified HLR, and HLR revises database, the new PA of registration respective user.

3, according to the implementation method of signaling system in the described wireless local telephone system of claim 1, it is characterized in that, in described caller rules, described PS has initiated to exhale and has been meant that PS user imports called number, press when sending key, starting caller process, the RPCU in the described A ' interface sends offhook message to GSM and comprises called number; Described authentication is based on same random number, key etc. and sends the message that requires authentication to PS, HLR respectively, and the result of calculation of same algorithm is sent to RPCU by message respectively, finishes authentication when the RPCU comparative result is consistent; The place of differentiating described result of calculation can be at RPCU or attaching position register HLR; Described tin of ring-back tone be meant at GSM network side analyzing called number, as be the outbound user, transmits beep-page message, as be the native system user, the starting called flow is after called subscriber's ring, postback called ALERTING message by described A ' interface to PS, the called subscriber listens ring-back tone; After described called off-hook was meant that the called subscriber hears ring, behind the off-hook, the speech channel that continues promptly entered talking state.

4, according to the implementation method of signaling system in the described wireless local telephone system of claim 1, it is characterized in that, in described called rules, described paging is called be during from not in the know squeezing into or through caller PS make a call and authentication after, network side is initiated paging by the air interface among the described interface A ' to called PS, after called PS receives, initiate to respond; Described called terminal ringing is after authentication is finished, called PS ring, and by described A ' interface prompting caller; Described called off-hook is that the called subscriber hears off-hook after the ring, the RPCU corresponding speech channel that continues, and tell network side called off-hook, the speech channel that continues after caller is received, both sides' conversation.

5, according to the implementation method of signaling system in the described wireless local telephone system of claim 1, it is characterized in that, in described handover procedure, described initiation switching is meant, when the RPCU of the user who is conversing under a PA moves to RPCU under another PA, pass through A ' interface and initiate handoff request to network side; The old RCPU speech channel of described dismounting is to go up corresponding process by network side to the old RPCU in PS place to initiate release message, discharges old speech channel and old call proceeding; The described new RCPU speech channel that continues is after release is finished, and passes through the new RPCU of A ' notice incision, and handoff procedure is finished in the new speech channel that continues.