CN101422057A - Method and apparatus for providing push-to-talk services in a cellular communication system - Google Patents

Abstract

To reduce a delay between a time that a user of an originating mobile station (MS) requests to set up a Push-To-Talk (PTT) call and the time that the user may begin to speak, a communication system provides a 'wake up list' of other mobile stations (MSs) that may be awakened prior to the originating MS requesting to set up a PTT call. To further reduce the delay, the user may begin speaking prior to completion of the call setup. The speech is stored and is conveyed to a called MS when the call is setup. If the call does not get setup or a user of the called MS is not present, the stored speech may be conveyed to the called MS as a voice message. The stored speech, or new speech, may also be used as an announcement of a call.

Description

Be used for providing the method and apparatus of PTT service at cellular communication system

The cross reference of related application

The application requires the provisional application No.60/533 of submission on December 31st, 2003,842, the priority of " METHOD AND APPARATUS FOR PROVIDINGPUSH-TO-TALK SERVICES IN A CELLULAR COMMUNICATIONSYSTEM " by name is all quoted its content this as a reference.

Technical field

The present invention relates generally to cellular communication system, more specifically, relate to the interconnection cellular communication system in the PTT communication service is provided.

Background technology

Proposed in recent years dispatching is increased to code division multiple access (CDMA) communication system, for example CDMA2000 communication system.Different with the interconnect services that is provided by the current cellular system, provide dispatch service by two-way radio system traditionally.Traditional scheduler service typically allows the instant visit by the travelling carriage of the calling that starts to target MS.For example, the dispatch group call service makes the user simultaneously and to communicate by letter with the group immediately, typically by pushing PTT (PTT) button.Use cellular system, because calling need dial phone number or need make arrangement to set up Conference Calling for three-dimensional, this calling can not occur immediately.Dispatch point-to-point call service and make the user also spontaneously to communicate by letter fast, once more, typically push the PTT button with another user.This specific character for work together but two people that can not converse each other are desirable, for example in concert, work but two people of the different piece of building., dispatch point-to-point call service and assist short message between the people of two work better for talking when suitable more in radiotelephone call.

The low delay is vital factor in any dispatch call.For example, acceptable foundation delay is unacceptable for dispatch service for the interconnected audio call of typical case, and this dispatch service depends on the very fast connection that the called party is made.Therefore, dispatch service provides instant access call to set up.Yet the problem in the dispatching patcher of realizing in cellular communication system is that the user is used for searching the phone directory that is presented on the cellular display screen, selects clauses and subclauses, sets up PTT call shared average time then is immediately anything but.

In cdma system, realize in the proposal of scheduling, typically take the about 3-4 of the cellular user of startup and start the PTT call second, that is, after entering cellular phone directory, push the PTT button.When the user selects clauses and subclauses and push the PTT button, cell phone will be called out initiation message and be communicated to infrastructure, and it identifies one or more cell phones or the phone group relevant with selected clauses and subclauses.Call out initiation message in response to receiving this, infrastructure is communicated to one or more cell phones that identify with beep-page message or to the one or more cell phones that are associated with the phone group that is identified.In response to paging receiving, each cell phone of calling out wakes up and passes on back infrastructure with page response.Set up the PTT call then.Wake this process of being called out cell phone and setting up the PTT call up and can take other 3-4 second.In addition, do not allow to start cellular user's speech, allow sound (TPT) up to receiving conversation, it is not communicated to the user up to setting up Traffic Channel in infrastructure and one or more the calling between the cell phone.As a result, between the time of time that starts the definite PTT of startup of cellular user call and permission user speech, pass by 9-10 second.

Therefore, exist for the demand that starts the method and apparatus of the delay before conversing in the PTT call that reduces in cellular communication system.

Description of drawings

Fig. 1 is the block diagram of wireless communication system according to an embodiment of the invention.

Fig. 2 is the block diagram of the packet data control switch of Fig. 1 according to an embodiment of the invention.

Fig. 3 is the block diagram of the travelling carriage of Fig. 1 according to an embodiment of the invention.

Fig. 4 is according to various embodiments of the present invention, by the logical flow chart of the performed method of setting up PTT (PTT) call of the communication system of Fig. 1.

Fig. 5 A is according to another embodiment of the present invention, by the logical flow chart of the performed method of setting up the PTT call of the communication system of Fig. 1.

Fig. 5 B is according to another embodiment of the present invention, the continuation of the logical flow chart of the method for setting up the PTT call that the illustrated communication system by Fig. 1 of Fig. 5 A is performed.

Fig. 6 A is according to another embodiment of the present invention, by the communication system of Fig. 1 performed voice warning is expressed logical flow chart to the method for the MS that is called out.

Fig. 6 B is according to another embodiment of the present invention, and the illustrated communication system by Fig. 1 of Fig. 6 A is performed expresses voice warning continuation to the logical flow chart of the method for the MS that is called out.

Embodiment

In order to solve needs for the method and apparatus of the delay before the session that reduces in the PTT call, to be started, a kind of communication system is provided, it is with starting (originating) travelling carriage (MS), be provided at startup MS request and set up before the PTT calling, " waking up " tabulation of other travelling carriages (MS) that can be waken up.In order further to reduce to postpone, before finishing call setup, the user can begin speech.When setting up calling, this speech is stored and is communicated to the MS that is called out.Do not exist if call out the user of the MS that is not established or is called out, the speech of being stored can be communicated to the MS that is called out, as speech message.Can also be with the speech stored or new speech as the announcement (announcement) of calling out, rather than typical " buzzer " or " chirp ".

Usually, embodiments of the invention comprise the method that is used for setting up at wireless communication system PTT (PTT) communication session.This method comprises the request that receives in response to reception wakes the request of travelling carriage up to wake travelling carriage up, wake travelling carriage up, and to receive the request of setting up the PTT communication session with travelling carriage, wherein the request that the PTT communication session is set up in reception after reception wakes the request of travelling carriage up.

Another embodiment of the present invention comprises the method that is used for setting up at wireless communication system the PTT communication session.This method comprise from the user of travelling carriage receive the request of setting up the PTT communication session, finish set up communication session before, receive speech that speech, storage received with the speech that produces storage and when finishing when setting up communication session the speech that reception and registration is stored from the user of travelling carriage.

An also embodiment of the present invention comprises the method that is used for setting up at wireless way system the PTT communication session.This method comprises from the user of first travelling carriage and receives the request of setting up the PTT communication session, receives speech and the speech that is received is communicated to second travelling carriage as alarm from the user.

Another embodiment of the present invention comprises control switch (switch), it comprises processor, this processor receives the request that wakes travelling carriage up, wakes travelling carriage up in response to reception wakes the request of travelling carriage up, and receive response to set up the PTT communication session with travelling carriage, wherein before the request of the PTT communication session that receives foundation and travelling carriage, receive the request that is used to wake up travelling carriage.

An embodiment more of the present invention comprises travelling carriage, this travelling carriage from the user of travelling carriage receive indication that user expectation starts the PTT communication session, in response to receiving this indication, pass on the request that wakes another travelling carriage up, and receiving user expectation from the user subsequently and start the indication of PTT (PTT) communication session and the indication of setting up the PTT communication session from user's reception.

An embodiment more of the present invention comprises travelling carriage, this travelling carriage from the user of travelling carriage receive the request of setting up the PTT communication session, finish set up communication session before, receive speech that speech, storage received with the speech that produces storage and when finishing when setting up communication session the speech that reception and registration is stored from the user of travelling carriage.

An also embodiment of the present invention comprises travelling carriage, and this travelling carriage receives request to set up the PTT communication session, to receive speech and the speech reception and registration that is received is the alarm to another travelling carriage from the user from the user of travelling carriage.

With reference to Fig. 1-6B the present invention is described more fully.Fig. 1 is the block diagram of wireless communication system 100 according to an embodiment of the invention.Communication system 100 comprises a plurality of base station systems (BSS) 110,120,130 (showing 3).A plurality of BSS110,120, each BSS of 130 comprise each basic transmitting-receiving station (BTS) 112,122,132, and it is operatively coupled to each base station controller (BSC) 114,124,134.A plurality of BSS110,120, each BSS of 130 are operatively coupled to a plurality of PDSN116,126, each packet data serving node (PDSN) of 136.Although not shown, communication system 100 can further comprise and is included among each BSC114,124,134 or inserts Packet Control Function (PCF) or packet control unit (PCU) between each this BSC and each PDSN116,126,136.A plurality of BSS110,120, each BSS of 130 be also connected to a plurality of MSC118,128,138 each move switching center (MSC).Yet, one of ordinary skill in the art will appreciate that one or more BSS110,120 and 130 can share PDSN and/or MSC, rather than be connected to independently PDSN and MSC, and do not deviate from spirit of the present invention and essence.

Communication system 100 also comprises a plurality of travelling carriages (MS) 102,103,104 (illustrating 3), and each is the member of phone group 105.Each MS of a plurality of MS102-104 and a plurality of BSS110,120, each BSS radio communication of 130.Each BSS110,120,130 provides communication service via each air interface 106,107,108 that has comprised forward link and reverse link to each MS102-104.Each forward link comprises paging channel, at least one forward link control channel and at least one forward.Each backward channel comprises reverse link access channel, at least one The function of backward power control channel and at least one reverse link traffic channel.

Each MSC118,128 and 138 is also connected to public network, and for example Public Land Mobile Nerwork (PLMN) or public switch telephone network (PSTN) 160 are provided for having comprised the Circuit-switched network of the communication session of any one or a plurality of MS102-104 thus.Each PDSN116,126,136 further is connected to Internet protocol (IP) network 140, and the network of packet switching is provided thus, is used to have comprised the communication session of any one or a plurality of MS102-104.Communication system 100 also comprises location database 142, effective catalogue (directory) 144, packet data control switch 146 and has server 148 that they all are operatively coupled to IP network 140.By IP network 140, each PDSN116,126,136, and each BSS110,120,130 and MS102-104 thus can access location databases 142, effectively catalogue 144 and packet data control switch 146.Communication system 100 also comprises external IP network 170, internet for example, and it is operatively coupled to IP network 140.BSS110,120 and 130, PDSN116,126 and 136, MSC118,128 and 138, IP network 140, location database 142, effective catalogue 144 and packet data control switch 146 are called the infrastructure 150 of communication system 100 in this venue.

Location database 142 keeps the record with the mobile logo symbol (mobile ID) that effectively each MS102-104 is relevant in communication system 100, and further keep and follow the trail of supply and mobility information with respect to each this MS, comprise the registration of MS when MS starts in communication system 100.Be effective every the position of MS102-104 in communication system 100 in the information that in remaining on data road, position 142, is kept, for example serve the BSS of MS.Can realize location database 142 with the combination of local position server (HLR) or access location server (VLR) or HLR and VLR or the combination of one or more HLR and/or VLR, as known in the art.

Effectively catalogue 144 is also referred to as and grouies busy registration (GCR), comprises having comprised the Database Systems that phone group or user organize data.Effectively catalogue 144 keeps the definition of all phone groups of the phone group 105 in the system 100 for example, comprise and the tabulation of the talkgroup identifier (ID of phone group) of each phone group's unique association and the mobile logo symbol (mobile ID) that is associated with the ID of phone group that this mobile logo symbol is associated with the MS uniqueness that for example is the member's of this phone group MS102-104.Specify talkgroup identifier when the inquiry to effective catalogue 114, that is, when asking the definition of specific talk group, in response, catalogue provides the tabulation of the mobile ID that is associated with the member of specific talk group.For example, in response to the inquiry of specifying the ID of phone group that is associated with phone group 105, effectively catalogue 144 can provide the mobile ID that is associated with MS102-104.

Packet data control switch 146 comprises PTT (PTT) server that logic is grouied busy in realization.Preferably, packet data control switch 146 be operating as described in the U.S. patent application serial number No.09/721.329 of " the System and Method of Servicing Mobile Communications with aProxy Switch " by name that submitted on November 22nd, 2000 like that, this application transferred of the present invention everyone and quote its full content at this.Packet data control switch 146 detects the startup of grouping busy by each member of phone group, for example with respect to of the MS102-104 of phone group 105, and automatically attempts being connected all members of the group in grouping busy.

Fig. 2 is the block diagram of packet data control switch 146 according to an embodiment of the invention.Packet data control switch 146 comprises processor 202, for example one or more microprocessors, digital signal processor (DSP), its combination or for ability and the known miscellaneous equipment of those of ordinary skill.Packet data control switch 146 also comprises at least one memory device 204 that is associated with processor 202, for example random-access memory (ram), dynamic random access memory (DRAM) and/or read-only memory (ROM) or its equivalence, its storage data and program, for example group busy program, it can and allow packet data control switch to carry out for the necessary all functions of operation in communication system 100 by the processor execution.

Fig. 3 is travelling carriage (MS), for example block diagram of MS102-104 according to an embodiment of the invention.Each MS of a plurality of MS102-104 comprises the user interface 302 that is connected to processor 306, the for example one or more microprocessors of processor 306, microcontroller, digital signal processor (DSP), its combination or for the known miscellaneous equipment of those of ordinary skills.Each MS also comprises at least one memory device 308 that is associated with processor 306, for example random-access memory (ram), dynamic random access memory (DRAM) and/or read-only memory (ROM) or its equivalence, data and the program of packet data control switch execution for the necessary all functions of operation in communication system 100 be carried out and be allowed to its storage can by processor.

User interface 302 provides the ability mutual with MS to the user of MS, comprises the input instruction to MS.In one embodiment of the invention, user interface 302 comprises display screen 304 and keyboard, and this keyboard comprises a plurality of buttons, comprises PTT (PTT) button, and it can be by the user of MS in order to the MS input instruction.In another embodiment of the present invention, display screen 304 comprises touch-screen, and this touch-screen can be determined the position (that is, X coordinate and Y coordinate) of the touch of user on touch-screen, and position data is communicated to processor 306.The position-based data, processor 306 is translated into instruction with user's touch subsequently.Preferably, display screen 304 can show " keyboard " screen, and it comprises a plurality of soft keys, for example corresponding to the soft key of the button on the traditional cellular phone keyboard, and further comprises the PTT soft key.

At least one memory device 308 keeps the mobile ID that is associated uniquely with MS.At least one memory device 308 also keeps phone directory, it comprises the identifier that is associated with MS that will participate in the PTT communication session and/or phone group, for example each mobile logo that is associated with MS uniquely symbol (mobile ID) and each talkgroup identifier that is associated with phone group uniquely (mobile ID).Can mobile ID be reprogrammed at least one memory device 308 by the user of MS, maybe it can be increased at least one memory device.When MS is the member of for example phone group of phone group 105, be associated with phone group, at least one memory device 308 can further be stored the associated list of ID of phone group and mobile ID, and wherein each in the tabulation of mobile ID moves ID corresponding to the MS that is the member of phone group.

Communication system 100 further keep be included in communication system in each MS of a plurality of MS102-104 " waking tabulation up " of being associated.Can be at least one memory device 308 of the MS of correspondence storage each wake tabulation up, perhaps can be stored in the infrastructure 150, and particularly at least one memory device 204 of packet data control switch 146 storage each wake tabulation up.In one embodiment of the invention, each wakes tabulation up and comprises the tabulation of the mobile ID that is associated with each MS, and this each MS can be by communication system 100 in response to being received wake request and wake up from corresponding M S by infrastructure device 150.In another embodiment of the present invention, each wakes the tabulation that tabulation can comprise the ID of phone group that is associated with phone group up, and the member of this phone group can be in response to being received wake request and waken up by communication system 100 from corresponding M S by infrastructure 150.In another embodiment of the present invention, each wakes the tabulation that tabulation can comprise the combination of mobile ID and the ID of phone group up.When storage in infrastructure 150 wakes when tabulation up, wake tabulation up and further comprise mobile ID corresponding to the MS that wakes tabulation up.

Preferably, communication system 100 is code division multiple access (CDMA) communication system, the wherein communication channel of forward link or reverse link, for example access channel, control channel, paging channel and Traffic Channel, comprise orthogonal code, Walsh sign indicating number for example, it sends with identical frequency bandwidth.Yet, those skilled in the art will appreciate that, communication system 100 can be operated according to any radio telecommunications system, for example still is not restricted to global mobile communication (GSM) communication system, Universal Mobile Telecommunications System (UMTS) communication system, time division multiple access (TDMA) communication system, frequency division multiple access (FDMA) communication system or OFDM (OFDM) communication system.

Referring now to Fig. 4, logical flow chart 400 is provided, its explanation is according to PTT (PTT) call establishment of a plurality of embodiment of the present invention.Can call out by the PTT that any MS102-104 in the communication system 100 sets up with any other MS in communication system or user or any MS or user's group.For example, the MS that any in the communication system 100 can PTT can with communication system in any other can PTT MS set up PTT and call out.By the method for another example, any member of phone group for example with respect to the MS102-104 of phone group 105 any one, can start and any one of this phone group or a plurality of other members' PTT call out.

Start MS when first, MS102 for example, when infrastructure 150 is passed on " wake request ", logical flow chart 400 beginnings (402).Wake request comprises at least the two MS that is used for waking up communication system, for example MS103 and one or more request of 104.The user of MS102 to infrastructure pass on set up the request of PTT (PTT) communication session before, start MS102 wake request be communicated to infrastructure 150.

In one embodiment of the invention, start MS102 in response to the indication that receives user expectation startup PTT communication session from the user who starts MS, and pass on wake request.One of ordinary skill in the art will appreciate that the user's of MS102 various operations can be built as the indication that user expectation starts the PTT communication session.For example, starting MS102 can open the phone directory that remains at least one memory device 308 that starts MS102 in response to user's instruct MS 102, and passes on wake request.By the method for another example, start MS102 and can receive enabled instruction in response to user and pass on wake request, for example when the user of MS opens the MS of clamshell type design or pushes startup button in the user interface 302 from MS.

In response to receiving (406) wake request, infrastructure 150, and concrete control switch 146 are waken (408) up and are included in and at least one MS103,104 in the tabulation of waking up that starts that MS is associated, to produce the MS that at least one is waken up.When keeping " waking tabulation up " in starting MS, MS will wake tabulation up and be communicated to infrastructure 150, as part " wake request ".When keeping " waking tabulation up " in infrastructure 150, wake request can comprise the mobile ID that is associated with startup MS102, but and Request System 100 wake up and " waking tabulation up " relevant all MS corresponding to the mobile ID of startup MS.

In one embodiment of the invention, step 408 can comprise following step.In response to receiving wake request, control switch 146 is determined each MS103 relevant with waking tabulation up, 104 position by reference position database 142.Each BSS120,130 of the MS that control switch 146 indication services are relevant with " waking tabulation up " is to " waking tabulation up " MS (or a plurality of) broadcast paging messages by the BSS service then.In response to receiving instruction from control switch 146, each BSS120,130 that serves the MS relevant with waking tabulation up is via the paging channel broadcast paging messages in each air interface 107,108.

Each beep-page message sign of being broadcasted by BSS120,130 and each MS that wakes that tabulation is associated up and serve by BSS.In one embodiment of the invention, beep-page message can comprise the mobile ID relevant with each this MS.In another embodiment of the present invention, when waking all members that tabulation comprises the phone group of phone group 105 for example up, except or substitute mobile ID, beep-page message can comprise the conversation ID that is associated with phone group.In response to paging receiving message, each MS103,104 determine this be beep-page message the expectation recipient, wake up and pass on back control switch 146 page response, instruct MS is waken up.

If the user also not like this indication start MS102, the user can indicate and start MS102 and open and comprise the MS that can participate in the PTT communication session and/or the phone directory of phone group so.Can wake up and wake the MS103,104 that is associated of tabulation up and side by side instruction is input to and starts MS102 with infrastructure 150.In response to receiving instruction, start the one or more memory devices 308 retrieval phone directories of MS102, and on the display screen 304 of user interface 302, show phone directory from MS from the user.The user who starts MS102 then can come to select from shown phone directory one or more MS and/or phone group and instruct MS 102 and selected one or more MS and/or phone group to set up the PTT communication session by pushing suitable button or touching the suitable soft key of the user interface 302 of MS.In response to receiving this instruction, starting MS102 will ask, and for example call out initiation message and pass on (410) to infrastructure 150, to set up the PTT communication session with selected one or more MS or phone group.

In response to receiving the request that (412) set up the PTT communication session, communication system 100 continues to set up the PTT communication session that (414) are asked.Be used to set up the process of PTT communication session known in this field, be not described in detail at this, unless the process of being engaged in when communication system 100 of setting up comprise with wake MS103 that tabulation is associated up, 104 the time, communication system does not need to be engaged in the processing that wakes the MS that calls out up, owing to the MS that is called out has been waken up in response to receiving wake request by infrastructure by infrastructure 150, perhaps be in by in its processing that wakes up.As a result, communication system 100 provides the foundation of the acceleration of PTT communication session.

As the part call establishment, communication system 100 is set up Traffic Channel in the air interface 106 that starts between MS102 and the infrastructure 150, be used for the reception and registration of speech business.Further, as the part call establishment, infrastructure 150 further in each air interface 107,108 that is associated with MS, wake up in infrastructure 150 and at least one and called MS103,104 each between set up Traffic Channel.In response to setting up Traffic Channel in called MS103,104 the air interface 107,108 corresponding to the air interface 106 of MS102 with corresponding at least one, notice (416) start MS102 the user he or she can begin conversation.Logical flow chart 400 finishes (418) then.

Preferably, start MS by play to the user who starts MS102 conversation allow sound (TPT) notify the user he or she can begin conversation.In one embodiment of the invention, when when at least one called MS103,104 sets up Traffic Channel, infrastructure 150, control switch 146 particularly, pass on TPT to starting MS102, and startup MS play TPT to the user of MS.In another embodiment of the present invention, when when at least one called MS103,104 sets up Traffic Channel, infrastructure 150, control switch 146 particularly, pass on to starting the instruction that MS plays TPT.In response to receiving this instruction, start the TPT of MS102, and TPT is converted to audio signal from least one memory device 308 key numbers ground storage of MS, then this audio signal is played to the user of MS.When receiving TPT, the user who starts MS can be by at first pushing the PTT button, or touch MS user interface 302 the PTT soft key and begin conversation.

By MS is provided, for example, can reduce the time total amount and the delay before startup MS begins to converse that in setting up the PTT communication session, cause starting MS103 that the MS request can wake up by communication system 100 before setting up the PTT communication session and " waking tabulation up " of 104.Because woke the MS on " waking tabulation up " before the PTT communication session is set up in startup MS request up, communication system 100 need not receive the request of setting up the PTT communication session in response to infrastructure 150, and participates in waking up for example processing of called MS.As a result, communication system 100 provides the foundation of the quickening of PTT communication session.Owing to set up to postpone and time that the user at first begins to converse is the staple market characteristic of PTT communication system, set up and postpone and increased the marketability that the PTT that operator provided by for example communication system of communication system 100 serves up to any minimizing of the time that the user begins to converse.

For further reduce to start MS for example user's request of MS102 set up delay between the time of PTT communication session and time that the user can begin to converse subsequently, communication system 100 can further allow the user finish set up the PTT communication session or call out before begin conversation.Referring now to Fig. 5 A and 5B, provide logical flow chart 500, the foundation of its explanation PTT (PTT) communication session according to another embodiment of the present invention.Start MS when first, when for example the user of MS102 pushed the PTT button or touches the PTT soft key of user interface of MS, logical flow chart began (502).Push or touch PTT button or soft key in response to the user, MS102 (504) is communicated to infrastructure with request, to set up PTT communication session and the further place (floor) of reserving the communication session that is established, be terminated up to this reservation, for example determine when discharging the PTT button and abandon this place or during as the user of MS102 when infrastructure 100 termination users' reservation.Unless specify, be to carry out by each processor 306 of MS by any one each performed function of MS102-104 at this.

In response to receiving request, communication system 100 is used in the Traffic Channel in the air interface that starts the air interface 106 between MS102 and the infrastructure 150 of passing on speech business by branch, continues to set up the PTT communication session of being asked.Further, as the part call establishment, each called MS of infrastructure 150 pagings, MS103 for example, that is, and " callee ".When from paged MS, i.e. during MS103 paging receiving response, infrastructure 150 is further set up Traffic Channel between the MS103 of infrastructure and response in corresponding air interface 107.When finishing the PTT communication session of foundation and called MS, infrastructure 150 notice like this starts MS102, preferably conveys to MS by message is finished in foundation.

In one embodiment of the invention, communication system 100 can allow the user who starts MS to begin conversation, sets up PTT simultaneously and calls out.In this embodiment, when call setup carries out (506), he or she can begin conversation MS102 notice (508) user.For example, MS102 can notify customer call foundation carrying out or MS102 can only notify this user of user can begin conversation, for example by playing traditional notice as conversation permission sound (TPT).Preferably, can at least one memory device 308 of MS102, store this notice and from least one memory device, retrieve, and play to the user by MS.

When receiving the notice that he or she can begin to converse, the user who starts MS102 can begin (510) conversation and the reservation that can continue to converse up to the place of user's communications session is terminated (514), for example, discharge PTT button or soft key by the user, perhaps stop user's place reservation by infrastructure 150.When finish set up communication session before the user of MS102 when beginning to converse, MS102 stores (512) user's speech in the speech buffer 310 of at least one memory device 308 that is included in MS.

When in step 510, the user of MS102 begins conversation before finishing call setup, and in step 514, when the reservation in the place of user's communications session was terminated, MS102 determined whether (516) call setup is finished.When in step 516, MS102 determines to set up when finishing, the customer call of MS notice (518) MS is set up and is finished, and preferably by user interface 302 audio plays and/or visual cues via MS, it finishes message corresponding to the call setup at least one memory device 308 that is stored in MS.Infrastructure 150 determines that further (520) called out MS, and promptly whether the user of MS103 exists and notify MS102 like this.In one embodiment of the invention, whether infrastructure 150 can be registered in system 100 based on being called out MS, for example, by reference position database 142 or by having a server (not shown), determine whether the user of called MS exists with reference to what be arranged in infrastructure 150 and be connected to IP network 140.In another embodiment of the present invention, infrastructure 150 can whether answering call determines whether called out MS103 exists based on being called out MS.

When the user who sets up PTT communication session and quilt calling MS exists, infrastructure 150 notice MS102, and the user called party's of MS102 notice (522) MS102 existence preferably is stored at least one memory device 308 of MS102 by broadcast and via the user interface 302 of MS shown audio frequency or visual cues.The speech that will be stored in by MS103 in the buffer of MS102 is communicated to MS103, and communication session continues as conventional P TT communication session, and wherein the user of MS102 can continue conversation (526), and the reservation up to the place of the communication session of MS102 is terminated.Logic flow 500 is finished (554) then.

When in step 516, MS determines that call setup finishes, and in step 520, infrastructure 150 is determined to be called out MS, be that the user of MS103 is not when existing, the user called party of MS102 notice (528) MS102 does not exist, and the user of prompting MS102 is stayed speech message, for example one or more speech message that is stored in the speech in the buffer 310 or speech messages that comprise new speech of comprising for calling out MS.Preferably, notice and prompting are stored at least one memory device 308 of MS102 and by MS102 and show via the user interface 302 of MS.

In response to notice and prompting, the user can stop (530) and call out any speech in the buffer 310 that maybe can will be stored in MS102 by suitable icon, button or the soft key in the user interface 302 of selecting MS or new speech and pass on and be speech message.In response to receive instruction come to called out MS pass on the speech of storing as voice mail message, starting speech in the buffer 310 that MS102 will be stored in MS102 and be communicated to memory location in the infrastructure 150 that is associated with MS103, is the speech message of MS103 with the voice recording of being stored wherein.In response to receiving instruction new speech information is conveyed to called MS as voice mail message, start MS102 via the audio frequency and/or the visual cues that are stored at least one memory device 308 that starts MS102 and show on the display screen of the user interface 302 of MS, prompting starts the new speech information of user of MS.In response to this prompting, the user who starts MS102 imports the new speech information of MS, and startup MS receives this new speech information from the user.Starting MS102 then and new speech information is communicated to memory location in the infrastructure 150 that is associated with MS103, is the speech message of MS103 with the voice recording of being stored wherein.Logic flow 500 finishes (554) then.

When in step 516, MS102 determines that call setup do not finish, and infrastructure 105 determines that (534) preset time period does not also have in the past and/or also do not have to occur the unsuccessful preset number of calling out of attempting setting up, for example unsuccessful trial paging is called out the preset number of MS103 or is got nowhere when attempting being established to the preset number of the Traffic Channel of being called out MS103, communication system 100, start MS102 particularly, the customer call of notice (536) MS102 is set up and is carried out.Communication system 100, preferably start MS102 or control switch 146 via MS102, also via showing on the display screen 304 of the user interface 302 of MS102 and be stored in text message or icon at least one memory device 308 of MS that whether the user of inquiry (538) MS102 stops and/or keep punching to set up is called out.

In response to this inquiry, start MS102 and can stop from user's reception (540) instruction of MS setting up the effort of calling or continuing to set up the effort of calling out, perhaps can not receive response, this can be interpreted as continuing to set up the instruction of calling.As user during in the effort that step 540 is not selected stop to set up to call out, that is, when the user selected to continue to set up the effort of calling or fails to select to stop setting up the effort of calling, logical flow chart 500 proceeded to step 516.As user during in the effort that step 540 select to stop set up is called out, the user of MS102 prompting (542) MS102 stays speech message for the called party, for example comprises the speech message of the speech in the buffer 310 that is stored in MS102 or comprises speech message one or more of new speech.Preferably prompting is stored at least one memory device 308 of MS102 and is shown by MS102 via the user interface 302 of MS.

Do not finish when determine call setup in step 516, and step 534 preset time period in the past after and/or occur unsuccessful when attempting setting up the preset number of calling, infrastructure 150 can stop (546) and set up the effort of calling out, for example, can stop the Traffic Channel that the called MS103 of paging maybe can stop to attempt being established to MS.In response to stopping setting up the effort of calling out, infrastructure 150 notice MS102 connection failures.Conversely, user's connection failure and prompting (550) user of MS102 notice (548) MS stay speech message for the called party, for example comprise the speech message of the speech in the buffer 310 that is stored in MS102 or comprise the speech message of new speech.Preferably notify and point out at least one memory device 308 that is stored in MS102 and show by MS102 via the user interface 302 of MS.

In response to prompting in step 542 or step 550, the user of MS102 can be by agreeable icon, button or the soft key in the user interface 302 that is chosen in MS, to pass on (544,552) be speech message with being stored in speech in the buffer 310 of MS102 or new speech.In response to receiving instruction the speech of being stored is communicated to by calling MS as voice mail message, be MS103, starting speech in the buffer 310 that MS102 will be stored in MS102 and be communicated to memory location in the infrastructure 105 that is associated with MS103, is the speech message of MS103 with the voice recording of being stored wherein.So that being communicated to as voice mail message, new speech information called out MS in response to receiving instruction, start MS102 via the audio frequency and/or the visual cues that are stored at least one memory device 308 that starts MS102 and on the display screen 304 of the user interface 302 of MS, show, point out the new speech information of user that starts MS.In response to the prompting for new speech information, the user who starts MS102 is input to MS with new speech information, and MS102 receives this new speech information from the user.Starting MS102 then and new speech information is communicated to memory location in the infrastructure 150 that is associated with MS103, is the speech message of MS103 with the voice recording of being stored wherein.Logic flow 500 finishes (554) then.

In another embodiment of the present invention, in communication system 100, the user who starts MS does not begin conversation up to having set up the PTT calling.In this embodiment, when when step 506 has been set up calling, infrastructure 150 definite (520) is called out MS, and for example whether the user of MS103 exists, and notifies MS102 like this.When the user who has set up PTT communication session and quilt calling MS existed, logical flow chart 500 proceeded to step 522, as mentioned above.When having set up the PTT communication session and not existed by the user of calling MS, logical flow chart 500 proceeds to step 528, as mentioned above.

By allowing the user who starts MS102 to begin conversation before set up calling out finishing, the user who has reduced to start MS determines to start the delay between the time of PTT call and time that the user begins to converse.Owing to before finishing call setup, can allow the user to begin, will be input to the speech that starts MS102 by the user and be stored in the buffer 310 of MS with words.When having set up when calling out and being called out MS for example the user of MS103 existing, the speech of being stored is communicated to called MS.Because the voice compression compression algorithm is by the length of the speech of startup travelling carriage reception, make its consumption, and to send at shorter interval at interval than spoken language, this speech is received travelling carriage and decompresses initial at interval spokenly to fill subsequently, the speech of being stored can be communicated to and be called out MS103, decompression, and play out subsequently conversation with the distortion of minimum.Is unsuccessful and sets up and call out if attempt to set up call out, perhaps set up and called out but the user of called MS103 does not exist or determines call not accepted, the speech of being stored can be communicated to called MS as speech message.

Speech of being stored or new speech also can be used as the warning to user's broadcast of called MS.Promptly, typically, when called MS for example MS103 or MS104 waken up by infrastructure 150, and be established to called out MS Traffic Channel as part PTT communication session, play " buzzer " or " chirp " by calling out MS to the user who is called out MS.Yet, in another embodiment of the present invention, when being waken and being established to up the Traffic Channel of calling out MS by infrastructure 150, can comprise coming the advertisement conveyed of the spoken message of self-starting MS102 to arrive the user who is called out MS by calling MS103,104.Be provided to the user who is called out MS by the announcement that will comprise the spoken message that starts MS, can select to ignore this calling, this calling of formation (queue) and not listening to audio message, this calling of formation or reply this calling after listening to audio message.

Fig. 6 is the logical flow chart 600 of the method for being carried out by communication system 100 that voice warning is communicated to called MS according to another embodiment of the present invention.Similar to logical flow chart 500, local first starts MS when for example the user of MS102 pushes the PTT button or touches the PTT soft key of user interface 302 of MS, logical flow chart 600 beginnings.Push or touch PTT button or soft key in response to the user, MS102 (604) is communicated to infrastructure to set up PTT session and the further place of reserving the communication session that is established with request, reserve up to stopping this place, for example when user's decision of MS102 is abandoned by discharging the PTT button or when infrastructure 100 stops user's reservation.

In response to receiving request, communication system 100 is by being distributed in the Traffic Channel in the air interface in the air interface 106 that starts between MS102 and the infrastructure 150, and continues to set up the PTT communication session of being asked.In addition, as the part call establishment, each called MS of infrastructure 150 pagings, MS103 for example, that is, and " callee ", and, further in the air interface 107 of response, set up the Traffic Channel between the MS103 of infrastructure 150 and response when when the MS paging receiving responds.When finishing with the foundation of the PTT communication session of being called out MS, infrastructure 150 notice like this starts MS102, preferably is communicated to MS by setting up message.

Similar to logical flow chart 500, in one embodiment of the invention, communication system 100 can allow the user who starts MS to begin conversation, sets up PTT simultaneously and calls out.In such embodiments, when call setup carries out (606), MS102 notify the user he or she can begin the conversation.When receiving the notice that he or she can begin to converse, the user who starts MS can begin (610) conversation and can continue conversation, be terminated (614) up to the reservation of the place of user's communications session, for example, discharge PTT button or soft key or pass through the place reservation that infrastructure 150 stops users by the user.When before the user of MS102 finishes the foundation of communication session, beginning to converse, in MS102 speech storage (612) speech buffer 310 in being included in the memory device 308 of MS with the user.

When in step 610, the user of MS102 began conversation before finishing call setup, and in step 614, and when the user place that stops communication session was reserved, MS102 determined whether (616) call setup is finished.When in step 616, MS102 determines to set up when finishing, the customer call of MS notice (618) MS is set up and is finished, and preferably shows audio frequency and/or the visual cues of finishing message corresponding to the call setup at least one memory device 308 that is stored in MS by the user interface 302 via MS.Infrastructure 150 is further determined (620) called MS, and for example whether the user of MS103 exists, and notifies MS102 like this.

When in step 616, infrastructure 150 determines to have set up the PTT communication session, and in step 620, when the user of further definite called MS103 exists, the speech that MS102 will be stored in the buffer 310 passes on (622) to MS103, and called MS103 plays the speech that is received as the user of announcement to MS103, that is, and by way of caution.Warn in response to receiving, the user of MS103 can select to ignore callings, formation is called out and not listening to audio message, after listening to audio message formation calling or answering call.MS103 passes on (626) user's response to start MS102 to warn via infrastructure 150 then, and logic flow 600 finishes (660).When the user who has set up PTT communication session and called MS did not exist, the user callee of MS102 notice (628) MS did not exist and does not successfully send warning, and logic flow 600 finishes (660).

When in step 616, when infrastructure 150 was determined not set up the PTT communication session, the customer call of MS102 notice (630) MS102 was set up and is carried out.Stopping (632) before setting up calling attempts finishing when calling out, for example, when past during preset time period or after the unsuccessful foundation of preset number is attempted, user's warning that notice (634) starts MS102 has successfully been sent to by calling MS103, and logic flow 600 finishes (660).When in step 632, before stopping, this sets up when calling out, and pass on (636) to MS103 the speech that is stored in the buffer 310, and called out MS103 the speech that is received is play the user that (638) give MS103 as announcement, that is, and warning.Once more, in response to receiving warning, the user of MS103 can select to ignore callings, formation is called out and not listening to audio message, after listening to audio message formation calling or answering call.MS103 passes on (640) user's response to start MS102 to warn via infrastructure 150 then, and logic flow 600 finishes (660).

In another embodiment of the present invention, the user who starts MS102 can not begin conversation up to having set up calling.In this embodiment, when setting up (606) calling, whether infrastructure 150 definite (642) the called MS for example user of MS103 exist, and notify MS102 like this.When the user who has set up the PTT communication session and called out MS did not exist, the user that the user that notice (644) starts MS102 is called out MS103 did not exist and will warn and successfully sends to called MS.Logic flow 600 finishes (660) then.

When in step 606, when the user who has set up the PTT communication session and called out MS existed, the user that the user of MS102 notice (646,648) MS102 is called out MS103 exists and he or she can begin conversation.When receiving the notice that he or she can begin to converse, the user who starts MS102 can begin (650) conversation.The speech that MS102 will be input to MS102 by the user of this MS passes on (652) to being called out MS03, and called out MS103 with the speech that received as announcement, i.e. (654) user to MS103 is play in warning.Once more, in response to receiving warning, the user of MS103 can select to ignore callings, formation is called out and not listening to audio message, after listening to audio message formation calling or answering call.MS103 passes on (656) user's response to start MS102 to warn via infrastructure 150 then, and logic flow 600 finishes (660).

Be used as the announcement of calling out by the voice that will be received, replace and typically be used for announcing " buzzer " or " chirp " of calling to the user who is called out MS, to the user who is called out MS provide allow that the user determines to ignore callings, formation is called out and not listening to audio message, after listening to audio message formation call out, or the information of answering call.Provide more information to the user who is called out MS, whether can make the step of going forward side by side determined of receipt of call whether makes about bearing and the expense that is associated via travelling carriage participation radio communication, based on this expense of keeping accounts the launch time that the user consumed by this information.

Although use and described the present invention particularly, it will be understood by those skilled in the art that and to make various changes and the equivalence of its element is replaced, and do not deviate from the scope of setting forth in the claims of the present invention with reference to its specific embodiment.Therefore, it is illustrative and not restrictive that specification and accompanying drawing should be understood that, and all these changes and replacement are intended to comprise within the scope of the present invention.

The solution of benefit, other advantages and problem has been described with reference to specific embodiment.Yet, the solution of these benefits, advantage and problem, and anyly can cause the solution of any benefit, advantage and problem or make their more conspicuous elements should not be built as key, needs or the essential specific or element of any or all claim.As used herein, term " comprises ", " comprising " or its any variation, be intended to cover and non-ly comprehensively comprise, the process, method, article or the device that for example comprise a series of elements not only comprise these elements, but can comprise and obviously not listing or for process, method, article or install other intrinsic elements.Will also be understood that, the use of relational language, if any, for example first and second, top and bottom etc. only is used for an entity or operation are separated with another entity or operating space, and not necessarily need or hint this entity or operate between any this relation or order.

Claims (23)

1. method that is used for setting up at wireless communication system PTT (PTT) communication session comprises:

Reception wakes the request of travelling carriage up;

Request in response to reception wakes travelling carriage up wakes travelling carriage up; And

Receive the request of the PTT communication session of foundation and travelling carriage, wherein after reception wakes the request of travelling carriage up, receive the request of setting up the PTT communication session.

2. method as claimed in claim 1, wherein travelling carriage comprises second travelling carriage, and wherein receives the request wake travelling carriage up and comprise:

Receive the indication that user expectation starts the PTT communication session from the user of first travelling carriage;

In response to receiving this indication, pass on the request that wakes second travelling carriage up by first travelling carriage; And

Receive the request that wakes second travelling carriage up by infrastructure.

3. method as claimed in claim 2 wherein receives indication and comprises at least one that receives the instruction that starts first travelling carriage and receive the instruction of opening phone directory from the user of first travelling carriage from the user of first travelling carriage.

4. method as claimed in claim 1, wherein receive the request that wakes travelling carriage up and comprise the request that wakes second travelling carriage up from the reception of first travelling carriage, wherein second travelling carriage with wake up the tabulation be associated, this wakes tabulation up and is associated with first travelling carriage, and wherein wakes the information that tabulation comprises one or more travelling carriages that can be waken up about reckoning with first travelling carriage to set up the PTT communication session up.

5. method that is used for setting up at wireless communication system PTT (PTT) communication session comprises:

Receive the request of setting up the PTT communication session from the user of travelling carriage;

Finish set up communication session before, receive speech from the user of travelling carriage;

The speech that storage is received is to produce the speech of storage; And

When finishing when setting up communication session, pass on the speech of being stored.

6. method as claimed in claim 5 also comprises:

Finish set up communication session before, stop setting up the PTT communication session; And

In response to stopping setting up communication session, the speech of storage is passed on as voice mail message.

7. method as claimed in claim 5, wherein travelling carriage comprises first travelling carriage, and wherein this method also comprises, when setting up communication session, whether the user who determines second travelling carriage exists, and wherein passes on the speech of being stored to comprise the speech of passing on storage when the user of second travelling carriage exists.

8. method as claimed in claim 7 also comprises when the user of second travelling carriage does not exist, and the speech of being stored is passed on as voice mail message.

9. method that is used for setting up PTT (PTT) communication session at wireless communication system, this method comprises:

Receive the request of setting up the PTT communication session from the user of first travelling carriage;

Receive speech from the user; And

The speech that is received is conveyed to second travelling carriage by way of caution.

10. method as claimed in claim 9 wherein receives speech and comprises:

Finish set up communication session before, receive speech from the user of first travelling carriage;

The speech that storage is received is to produce the speech of storage; And

Wherein pass on and comprise that the speech that will be stored conveys to second travelling carriage by way of caution.

11. method as claim 10, also comprise, when setting up communication session, determine whether the user of second travelling carriage exists, and wherein pass on the speech stored to comprise when the user of second travelling carriage exists, the speech of being stored to be conveyed to by way of caution the user of second travelling carriage.

12. method as claimed in claim 9 wherein receives speech from the user and comprises:

When setting up communication session, determine whether the user of second travelling carriage exists;

Exist in response to the user who determines second travelling carriage, notify the user of first travelling carriage to begin conversation; And

In response to this notice, receive speech from the user of first travelling carriage.

13. control switch that comprises processor, its reception wakes the request of travelling carriage up, wakes the request of travelling carriage in response to reception up, wake travelling carriage and reception and travelling carriage up and set up the request of PTT (PTT) communication session, wherein receive the request that wakes travelling carriage up before setting up the request of PTT communication session with travelling carriage receiving.

14. control switch as claim 13, wherein receive the request that wakes travelling carriage up and comprise the request that wakes second travelling carriage up from the reception of first travelling carriage, wherein second travelling carriage with wake up the tabulation be associated, this wakes the information that tabulation comprises one or more travelling carriages that can be waken up about reckoning with first travelling carriage to set up the PTT communication session up, and wherein control switch also comprises at least one memory device that is connected to processor, keeps waking up tabulation in this memory device.

15. travelling carriage, this travelling carriage from the user of travelling carriage receive indication that user expectation starts PTT (PTT) communication session, in response to receiving this indication, reception and registration wakes the request of another travelling carriage up and after the indication that receives user expectation startup PTT (PTT) communication session from the user, receives the instruction of setting up the PTT communication session from the user.

16. as the travelling carriage of claim 15, wherein travelling carriage is by receiving from the instruction of the user's of travelling carriage startup first travelling carriage and from least one of the user's of travelling carriage the instruction of opening phone directory, and receives indication.

17. as the travelling carriage of claim 15, wherein travelling carriage comprises at least one memory device that is connected to processor, keep waking tabulation up in this memory device, and wherein another travelling carriage is associated with waking up to tabulate.

18. travelling carriage, this travelling carriage receives the request of setting up the PTT communication session, receives speech that speech, storage received with the speech that produces storage and when finishing when setting up communication session the speech that reception and registration is stored from the user of travelling carriage before setting up communication session finishing from the user of travelling carriage.

19. as the travelling carriage of claim 18, wherein travelling carriage comprises first travelling carriage, wherein, when setting up communication session, first travelling carriage determines whether the user of second travelling carriage exists, and wherein when the user of second travelling carriage exists, first travelling carriage is passed on the speech of being stored.

20. as the travelling carriage of claim 19, wherein when the user of second travelling carriage did not exist, first travelling carriage passed on the speech of being stored as voice mail message.

21. a travelling carriage, this travelling carriage receives the request of setting up the PTT communication session, receives speech and the speech that is received is conveyed to another travelling carriage by way of caution from the user from the user of travelling carriage.

22. travelling carriage as claim 21, wherein travelling carriage receives speech, the speech that received of storage producing the speech of storage from the user before setting up communication session finishing, and wherein travelling carriage is passed on by the speech that will be stored and passed on the speech that is received by way of caution.

23. travelling carriage as claim 22, wherein, when setting up communication session, travelling carriage determines whether the user of another travelling carriage exists, and when wherein travelling carriage exists by the user when another travelling carriage the speech of being stored is conveyed to another travelling carriage by way of caution, and pass on the speech that is received.

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