CN1852500A

CN1852500A - Press-and-through system and method for realizing same

Info

Publication number: CN1852500A
Application number: CN 200510135291
Authority: CN
Inventors: 胡军
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2005-12-29
Filing date: 2005-12-29
Publication date: 2006-10-25
Anticipated expiration: 2025-12-29
Also published as: CN100438654C

Abstract

The system includes talker terminal and listener terminal, radio network controller, support nodes of service GPRS, support nodes of gateway GPRS, and broadcast/multicast service center. The invention also discloses method for realizing push to talk (PTT) service. The method includes steps: building public control load supporting for PTT service on node equipment at network side; building carried context for PTT service on node equipment at network side; talker terminal and listener terminal carry out PTT communication. The invention can realize PTT function on WCDMA system. Advantages are: increasing service types users can use, creating more revenue for operation manager.

Description

The method of a kind of putting call through immediately after connection system and realization putting call through immediately after connection business

Technical field

The present invention relates to a kind of communication technology, relate in particular to PTT (putting call through immediately after connection) system of a kind of MBMS of utilization (multimedia broadcast multi-broadcasting business) technology and the method for realization PTT business.

Background technology

MBMS is one, and it allows data to send to a plurality of recipients from a source entity a bit to the unidirectional multimedia service of multiple spot, and such service has a wide range of applications in wireless network.MBMS utilizes high efficiency wireless forwarding method that identical data are downloaded to a plurality of mobile subscriber terminals, as being that the multi-medium data of Streaming (stream) or Background (background) class downloads to a plurality of mobile subscriber terminals with content.

For the MBMS business, in 3GPP (third generation affiliate engineering), defined two kinds of operational modes, be respectively: broadcast mode and multicast (multicast) pattern.In the broadcast mode of MBMS, multi-medium data (literal, audio frequency, video, picture) sends to all users in the broadcasting service area from a data source.In general, broadcasting service is free to receiving terminal, but operator may carry out the charging based on broadcasting service time or flow to some content supplier (for example advertiser).In the multicast pattern of MBMS, network selectively sends to those to data and includes the sub-district that multicast service receives the user.The main distinction of multicast pattern and broadcast mode is that the multicast pattern needs user's at first signatory corresponding service before adding multicast usually, and in general multicast service needs defrayment.

Simply introduce the MBMS technology below.

One, MBMS reference configuration and entity

As shown in Figure 1, the structure of MBMS operation system comprises: BM-SC (BroadCast MultiCast Service center), be used to control whole M BMS business, obtain multi-medium data, and the multi-medium data that obtains issued GGSN (critical point GPRS Support Node), when multicast service, realize mobile terminal access control and charging; GGSN, the multimedia service that is used for BM-SC is sent carries out protocol conversion, and is forwarded to SGSN (Serving GPRS Support Node); SGSN is used for the multi-medium data that GGSN sends is routed to RNC (radio network controller); RNC is used for multi-medium data is issued UE (subscriber equipment); UE is used to receive the multi-medium data that RNC sends.

The border of MBMS carrying service is Gmb and Gi reference point, and the service on chain of command and user plane bearer plane is provided respectively.By Gmb and Gi reference point, the signaling of being correlated with between GGSN and the BM-SC mutual: the contextual foundation of MBMS, release; Notice GGSN is about the beginning of MBMS session and stop, and professional qos parameter etc.

Two, MBMS provides professional pattern

The MBMS business supplied a pattern two kinds: multicast pattern and broadcast mode.Below it is introduced respectively.

1, multicast pattern

As shown in Figure 2, provide professional step to comprise under the multicast pattern: subscription, service announcement, adding, session begin, MBMS notice, transfer of data, conversation end and leave away.Wherein subscribe to, add, leave away into certain user-dependent flow process, service announcement, session begin, MBMS notice, transfer of data, conversation end are the flow process relevant with certain multicast service.The step that provides professional under the multicast pattern is described below.

(1) subscribes to (Subscription)

Subscribe to sub-process certain user and certain multicast service are related, allow this user to receive this multicast service.Subscription information is recorded among the BM-SC, represent this user added should the multicast subscription group of business in.

(2) service announcement (service announcement)

The service announcement sub-process is used for the information that network side tells that the user is relevant with this multicast service, such as this professional ip multicast address, broadcast start time etc.Network can be notified the user by various mechanism, comprises MBMS multicast, MBMS broadcasting, PUSH mechanism, and URL (HTTP, FTP) etc.

(3) add (Joining)

Add sub-process and make certain user tell network side, this user need receive certain multicast service now.Adding information is recorded among the BM-SC, represent this user added should the multicast group of business in.Only subscribed to certain multicast service, just can add this multicast service in advance.

After the user adds the multicast group, can set up this user's context among GGSN, the SGSN, set up this professional context (if not setting up before this).Can set up this user's context (this user is in the RRC connection status) among the RNC, set up this professional context (if foundation and this user are not in the RRC connection status before this).

(4) leave (Leaving)

Leave sub-process and make certain user tell network side, this user can not receive certain multicast service now.In this professional multicast group of BM-SC, this user profile is deleted.User context information among GGSN, SGSN, the RNC is also deleted.

(5) session begins (Session start)

Session begins sub-process and is used for BM-SC notice GGSN, SGSN, RNC, and multicast service is prepared to begin to send data now, needs each network entity to set up from BM-SC and has added the point of subscriber equipment of multicast group to the service bearer of multicast communication to each.

(6) MBMS notice (MBMS notification)

MBMS notice sub-process is used for BM-SC and tells each user, and multicast service is prepared to begin to send data now, so that each user need prepare to receive data.

(7) transfer of data (Data transfer)

Transfer of data is transferred to each user for actual business datum from content supplier.

(8) conversation end (Session stop)

The conversation end sub-process is used for BM-SC and tells GGSN, SGSN, UTRAN, and now cast service data sends and stops, and needs each network entity to remove from BM-SC and has added user's the point of multicast group to the service bearer of multicast communication to each.

2, broadcast mode

As shown in Figure 3, provide professional step to comprise under broadcast mode: service announcement, session begin, MBMS notice, transfer of data and conversation end.Compare with multicast service, do not have and user-dependent sub-process in the step of broadcasting service: subscribe to, add and leave away, any contact do not take place with network in the user when receiving broadcast service.Other step is identical with step under the multicast pattern, does not repeat them here.

3, MAC structure

As shown in Figure 4, in the MAC of MBMS structure,, increased MAC-m in the MAC structure,, realized scheduling MBMS associated transport channel to support the multicast function in order to support MBMS; Simultaneously, also increased by two kinds of logic channel: MCCH (MBMS control channel) and MTCH (MBMS Traffic Channel), the point that is used for the MBMS business datum is to multicast communication.

Three, the channel architecture of MBMS

MBMS is professional to exist two kinds of transmission meanss: i.e. point-to-point transmission and put multicast communication.For every kind of transmission means, all there is corresponding channel type to realize.

1, puts multicast communication

Point is applicable to user under connection mode and the idle pulley to the transmission of multiple spot.

The logic channel MCCH that increases newly is used for transmitting chain of command information.MCCH can be on the SCCPCH (Secondary Common Control Physical Channel) of carrying CCCH channel (Common Control Channel), perhaps carries on the SCCPCH channel of MTCH to send.

The MTCH channel is used for the user face data of MBMS transmission.

MCCH and MTCH channel are mapped to FACH (forward access channel) and SCCPCH.

MCCH and MTCH use the RLC (Radio Link control) of UM pattern (Unacknowledged Mode).

2, MBMS indicating channel

The distinctive Page Indication Channel MICH of MBMS is used for realizing MBMS notice (MBMSnotification).

Four, the reception of MBMS

The information that has comprised the MCCH channel on the BCCH channel (Broadcast Control Channel), and the MCCH channel has comprised the information of MTCH channel.

Can UE receive a plurality of MBMS business at synchronization, depends on the ability of UE.UE has various modes to receive the MBMS business.The step of UE reception MBMS business under the various patterns is described respectively below.

1, idle pulley

If UE supports MBMS and has activated a MBMS business, and this professional session of existence in the current resident sub-district, then:

Read the RRC message on the MCCH channel;

Connect if require to set up RRC, then start the RRC establishment of connection.

Connect if do not need to set up RRC, then directly read the MBMS business from the channel that carries MTCH.

If the selecting type that exists suitable neighbor cell to carry out the MBMS business merges, the selecting type that then carries out the MBMS business between current area and neighbor cell merges.

2, URA-PCH pattern (page-mode in the user registration area territory)

Read the RRC message on the MCCH channel;

If MCCH indicates cell update of current MBMS service needed, then triggering cell renewal process.

For the MBMS business of indicating on each MCCH channel, read the Common transport channel of MTCH channel correspondence.

3, CELL-PCH pattern (cell paging pattern)

Read the RRC message on the MCCH channel;

Read the Common transport channel of MTCH channel correspondence.

4, CELL-FACH pattern (cell forward access module)

Read the RRC message on the MCCH channel;

Read the Common transport channel of MTCH channel correspondence.

For CELL-FACH user, UTRAN may determine to come the MBMS transmission business with DTCH (Dedicated Traffic Channel), and does not adopt the MTCH channel to come the MBMS transmission business.

5, CELL-DCH pattern (cell private channel pattern)

Read the RRC message on the MCCH channel;

Read the Common transport channel of MTCH channel correspondence.

For CELL-DCH user, UTRAN may determine to come the MBMS transmission business with the DTCH channel.

In sum, MBMS only provides a kind of unidirectional multimedia broadcast multi-broadcasting business, does not have the PTT function.

Summary of the invention

The purpose of this invention is to provide a kind of method that the PTT system is provided and realizes the PTT business on the MBMS technical foundation, can in MBMS, provide PTT function.

The invention discloses a kind of putting call through immediately after connection system, comprising: speaker's user terminal, hearer's user terminal, apparatus for network node,

Speaker's user terminal is used for initiating or discharges putting call through immediately after connection calling out;

Hearer's user terminal is used for initiating or receives putting call through immediately after connection calling out;

Network node equipment is used to set up speaker's user terminal to the professional public control carrying of the putting call through immediately after connection between hearer's user terminal, sets up speaker's user terminal to the putting call through immediately after connection service bearer context between hearer's user terminal; And according to communicating by letter between putting call through immediately after connection service bearer context control speaker user terminal and the hearer's user terminal.

Described apparatus for network node comprises radio network controller, Serving GPRS Support Node, critical point GPRS Support Node and BroadCast MultiCast Service center,

Radio network controller is used to set up the bearer path that is used for the putting call through immediately after connection business, and transmits the data that are used for the putting call through immediately after connection business;

The two-way ground loading of Serving GPRS Support Node to the critical point GPRS Support Node under the control at BroadCast MultiCast Service center, set up, discharged to Serving GPRS Support Node; And the speech data and/or the putting call through immediately after connection call control information of speaker's user terminal issued the critical point GPRS Support Node, speech data and/or the putting call through immediately after connection call control information of issuing hearer's user terminal is distributed to each radio network controller;

The critical point GPRS Support Node, be used for the speech data and/or the putting call through immediately after connection call control information of speaker's user terminal are issued the BroadCast MultiCast Service center, speech data and/or the putting call through immediately after connection call control information of issuing hearer's user terminal is distributed to each subordinate's Serving GPRS Support Node;

The BroadCast MultiCast Service center is used to safeguard putting call through immediately after connection service groups information, and controls foundation, release and the speech right modifying judgement of each putting call through immediately after connection service call; And the speech data of speaker's user terminal issued each critical point GPRS Support Node.

Described radio network controller comprises:

Bearer path is set up the unit, be used to set up, discharge the two-way ground loading passage of radio network controller to Serving GPRS Support Node, foundation, release radio network controller carry to multiple spot to the descending point of each sub-district of the interior hearer's user terminal of radio network controller; Set up of the up point-to-point carrying of the interior speaker's user terminal of radio network controller, discharge up point-to-point carrying when speaker's user terminal rings off in radio network controller to radio network controller;

Retransmission unit, be used for and be transmitted to Serving GPRS Support Node from speech data and/or the putting call through immediately after connection call control information that speaker's user terminal sends, will be transmitted to each hearer's user terminal from speech data and/or the putting call through immediately after connection call control information that Serving GPRS Support Node sends.

Described BroadCast MultiCast Service center comprises:

Maintenance unit is used to safeguard putting call through immediately after connection service groups information;

Control unit is used to control foundation, release, the speech right modifying judgement of each putting call through immediately after connection service call, the terrestrial transmission carrying of control whole service group and the foundation and the release of empty port load-supporting;

Retransmission unit is used for the speech data of speaker's user terminal is issued each critical point GPRS Support Node.

The invention also discloses a kind of method that realizes the putting call through immediately after connection business, described method comprises:

A, set up the professional public control carrying of putting call through immediately after connection at network side node equipment;

B, set up putting call through immediately after connection service bearer context at network side node equipment;

C, user terminal activate the putting call through immediately after connection business;

D, speaker's user terminal carry out putting call through immediately after connection with hearer's user terminal and communicate by letter.

Described network side node equipment comprises radio network controller, Serving GPRS Support Node, critical point GPRS Support Node and BroadCast MultiCast Service center.

The professional public control carrying of described putting call through immediately after connection comprises professional public control carrying of up putting call through immediately after connection and the professional public control carrying of descending putting call through immediately after connection.

Described putting call through immediately after connection service bearer context comprises: the discontinuous receiving cycle length factor of QoS parameter, putting call through immediately after connection of MBMS carrying attribute, putting call through immediately after connection service identification, coverage attribute, upstream and downstream user face bearer path.

Described step C further comprises:

C1, user terminal and network connect;

C2, set up the user terminal context at network side;

C3, user terminal obtain user terminal context and putting call through immediately after connection bearer context.

Described user terminal context comprises: IMSI International Mobile Subscriber Identity, will IP address allocated, rob power priority.

Described step C3 specifically comprises: user terminal obtains the user terminal context from the BroadCast MultiCast Service center, obtain the putting call through immediately after connection bearer context from Serving GPRS Support Node.

Described step D specifically comprises:

D1, user terminal requests putting call through immediately after connection right of speech.

Do not have user terminal to take right of speech in the putting call through immediately after connection group, or the priority of current speaker's user terminal is when being lower than the priority of the user terminal of initiating the request right of speech, described step D1 specifically comprises:

D11, set up the empty port load-supporting passage between user terminal and the radio network controller;

D12, set up the upstream and downstream user face bearer path of this putting call through immediately after connection business;

D13, speaker's user terminal send speech data to network;

D14, hearer's user terminal receive the speech data of automatic network.

If when the priority of current speaker's user terminal was not less than the priority of the user terminal of initiating the request right of speech, described step D1 specifically comprised: send Radio Resource control connection refuse information to user terminal, make user terminal get back to idle pulley.

After described step D1, also carry out:

D2, speaker's user terminal stop putting call through immediately after connection and call out.

Described D2 also comprises: discharge the empty port load-supporting of this user terminal to radio network controller.

Also carry out after described step D1: when not having the speaker at the fixed time, the upstream and downstream user face ground loading of downlink space interface carrying and this putting call through immediately after connection business is initiated to discharge in the BroadCast MultiCast Service center.

After execution in step C, also carry out: user terminal deexcitation putting call through immediately after connection business.

Described user terminal deexcitation putting call through immediately after connection business specifically comprises: at network side node unit deletion user terminal context.

Described user terminal deexcitation putting call through immediately after connection business also comprises: if in radio network controller, Serving GPRS Support Node and/or the critical point GPRS Support Node that user terminal belonged to when not having the Any user terminal context of this putting call through immediately after connection business, and deletion putting call through immediately after connection bearer context on described radio network controller, Serving GPRS Support Node, critical point GPRS Support Node.

Described step D also comprises: in the time-continuing process that putting call through immediately after connection is called out, if during this subscriber terminal authority failure, speaker's authority of this user terminal is cancelled at radio network controller request BroadCast MultiCast Service center.

Described step D also comprises: surpassed for first scheduled time when the speech time of certain speaker's user terminal, or the BroadCast MultiCast Service center do not receive the liveliness message of this user terminal in second scheduled time, and speaker's authority of this user terminal is cancelled at the BroadCast MultiCast Service center.

Described method also comprises: when moving because of user terminal when making the Serving GPRS Support Node of its ownership change, carry out following step:

E, in the Serving GPRS Support Node of current ownership and radio network controller, set up the user terminal context, deletion user terminal context in the Serving GPRS Support Node of former ownership and radio network controller.

Described step e also comprises: if the Serving GPRS Support Node of the current ownership of user terminal and/or radio network controller are not set up the putting call through immediately after connection bearer context, set up the putting call through immediately after connection bearer context at described Serving GPRS Support Node and/or radio network controller.

Described step e also comprises: if there is not the user terminal context in the Serving GPRS Support Node of the former ownership of user terminal and/or the radio network controller, and deletion putting call through immediately after connection bearer context on described Serving GPRS Support Node and/or radio network controller.

The invention also discloses a kind of radio network controller, comprising:

The invention also discloses a kind of BroadCast MultiCast Service center, comprising:

According to the present invention, can in existing WCDMA system, realize the PTT function, increase the class of business that the user uses, for operator creates more income.

Description of drawings

Fig. 1 shows the system construction drawing of MBMS;

Fig. 2 shows the step that realizes the MBMS business in the MBMS system under the multicast pattern;

Fig. 3 shows the step that realizes the MBMS business in the MBMS system under the broadcast mode;

Fig. 4 shows the MAC structure chart in the MBMS system;

Fig. 5 shows the schematic diagram of MBMS carrying expansion;

Fig. 6 shows the flow chart that UE activates the PTT business;

Fig. 7 shows the flow chart that UE moves processing;

Fig. 8 shows the flow chart of UE request [fighting for] PTT right of speech;

Fig. 9 shows the flow chart that RNC discharges the PTT right of speech;

Figure 10 shows the flow chart that UE discharges the PTT right of speech;

Figure 11 shows the flow chart that BM-SC discharges the PTT right of speech;

Figure 12 shows the flow chart that the PTT service bearer discharges;

Figure 13 shows the flow chart of UE deexcitation PTT business.

Embodiment

Understand and realization the present invention the existing embodiments of the invention of describing in conjunction with the accompanying drawings for the ease of persons skilled in the art.

Before describing the present invention, PTT is once described simply.

PTT business (also claiming group service) has the function of grouping busy of putting call through immediately after connection, is widely used in the operative scenario that needs group collaboration, united and coordinating.The group system that realizes the PTT business is divided into private network group system (TETRA is representative) and common network group system (iDEN is representative).What occur the earliest is the private network group system, and the private network group system is exclusively used in group service, excellent performance, but generally all be exclusive supply, can not interconnect between each equipment vendor, so the price general charged costliness.Along with the developing rapidly and popularizing of radio honeycomb communication, the communication equipment merchant suitably changes based on wireless cellular system, optimizes continue performance and resource efficiency, realization common network group service.As GT800 (based on GSM)/CT800 and GOTA (based on CDMA2000).

Along with the full maturity of WCDMA technology, the WCDMA system begins in the whole world commercial on a large scale, because the practicality of PTT business need provide PTT business equally in the WCDMA system.The present invention proposes to realize the technical scheme of group service based on the MBMS business.Describe the present invention in detail below in conjunction with accompanying drawing.

One, general introduction

MBMS itself supports broadcasting and two kinds of patterns of multicast, in order to support the PTT function on the basis of MBMS, expansion PTT pattern.For the PTT pattern, in BM-SC, GGSN, SGSN, RNC, UE, increase function corresponding.Interface aloft, hearer's downlink voice Data-carrying is in P-T-M (putting multiple spot) carrying, and UE is in the idle pulley of RRC; Speaker's upstream voice data is carried on the dedicated channel, and UE is in the CELL_DCH state of RRC connection mode.

The invention provides a kind of PTT system, described PTT system comprises following node device: BM-SC, GGSN, SGSN, RNC, UE (function with speaker and/or hearer).Described BM-SC, GGSN, SGSN, RNC are collectively referred to as apparatus for network node.Described network node equipment is used to set up speaker's user terminal to the professional public control carrying of the putting call through immediately after connection between hearer's user terminal, sets up speaker's user terminal to the putting call through immediately after connection service bearer context between hearer's user terminal; And according to communicating by letter between putting call through immediately after connection service bearer context control speaker user terminal and the hearer's user terminal.As shown in Figure 5, below each node device of PTT system is described respectively.

BM-SC is used to safeguard the information of each PTT service groups,, safeguards the UE group membership information that PTT service groups information and PTT service groups comprise in BM-SC that is.BM-SC controls each PTT call establishment, release, speech right modifying judgement, the foundation and the release of carrying of control terrestrial transmission and empty port load-supporting.In PTT called out, BM-SC sent to each hearer UE with the MBMS carrying by point-to-multipoint of the speech data of speaker UE.Described BM-SC comprises: maintenance unit is used to safeguard PTT service groups information; Control unit is used to control foundation, release, the speech right modifying judgement of each PTT service call, the foundation and the release of carrying of control terrestrial transmission and empty port load-supporting; Retransmission unit is used for the speech data of speaker UE is issued each GGSN.

GGSN issues BM-SC with the upstream voice data of speaker UE, and the downlink voice data of issuing hearer UE are distributed to each SGSN of subordinate.

SGSN sets up, discharges the two-way ground loading of SGSN to GGSN under the control of BM-SC.In PTT called out, SGSN issued GGSN with the upstream voice data of speaker UE, and the downlink voice data of issuing hearer UE are distributed to each RNC of subordinate.

RNC sets up, discharges the two-way ground loading of RNC to SGSN under the control of BM-SC, set up, discharge the descending P-T-M carrying of RNC to each sub-district of hearer UE.RNC sets up the up P-T-P carrying of speaker UE to RNC under the request of speaker UE, discharge this P-T-P carrying when speaker UE rings off.In PTT called out, RNC issued higher level SGSN with the upstream voice data of speaker UE, and the downlink voice data are distributed to each hearer UE by descending P-T-M carrying.Described radio network controller comprises: bearer path is set up the unit, is used to set up, discharge the two-way ground loading passage of RNC to SGSN, sets up, discharges the descending P-T-M carrying of RNC to each sub-district of hearer UE; Set up the up P-T-P carrying of speaker UE, when speaker UE rings off, discharge this up P-T-P carrying to RNC; Retransmission unit, the speech data and/or the PTT call control information that are used for sending from speaker UE are transmitted to SGSN, will be transmitted to each hearer UE from speech data and/or the PTT call control information that SGSN sends.

Hearer UE and speaker UE are used for adding or leave a PTT and organize.Hearer UE initiates or discharges the PTT group calling, and request PTT right of speech or release PTT right of speech.

Three, MBMS carrying expansion

As shown in Figure 5, left node is the downstream site of right node, and right node is the superior node of left node.In the MBMS of multicast and broadcast mode business, after the MBMS session began, to the MBMS downlink user face bearer path shown in the solid arrow line of hearer UE, with carrying MBMS business datum, business datum arrived each UE through MBMS RB from BM-SC by BM-SC in foundation.For SGSN and GGSN, will be distributed to each downstream site from a piece of data of superior node.

In the MBMS of PTT pattern business, MBMS downlink user face bearer path comprises downlink user face Data-carrying passage LnrUsr and downlink user face control bearer path LnrCtrl two parts, described LnrUsr is used to transmit the downlink voice data to hearer UE by BM-SC, and described LnrCtrl is used to transmit the descending PTT control messages of BM-SC to hearer UE.In the PTT business, except MBMS downlink user face bearer path, also set up three kinds of bearer path as shown in Figure 5: by the RNC of speaker UE to its ownership, again by the up user plane bearer passage (TkrUsr shown in the solid arrow line of each RNC to BM-SC, transmission speaker UE is to the upstream voice data of BM-SC), by the RNC of speaker UE to its ownership, again by the upload control face bearer path (UpCtrl shown in the empty arrow line of each RNC to BM-SC, transmission speaker UE and each RNC are to the up PTT control messages of BM-SC), and by BM-SC to each RNC, again by the RNC of speaker UE ownership to the descending chain of command bearer path shown in the empty arrow line of speaker UE (DnCtrl, transmission BM-SC is to the descending PTT control messages of each RNC and speaker UE).For SGSN and GGSN, will be distributed to each downstream site from a piece of data of superior node, will give same superior node from the transfer of data of each downstream site simultaneously.

Each PTT business respectively has a cover user face bearer path at network side, described user plane bearer passage comprises ground loading passage and empty port load-supporting passage, these two kinds of passages are set up together and are discharged, and the user plane bearer passage is set up when the user initiates the PTT speech; The chain of command bearer path always has a cover, sets up by the backstage configuration in advance, and is professional shared by all PTT; When the RNC that is belonged to as speaker UE receives descending control messages, leach the descending control messages of this PTT business, be transmitted to speaker UE, so that the calling of control speaker UE.The target ip address of IP packet is the IP multicast address of corresponding PTT business in downlink bearing passage and the up bearer path, up TkrUsr, UpCtrl use different udp ports number to distinguish, and descending LnrCtrl, LnrUsr, DnCtrl use different udp ports number to distinguish.

BM-SC is responsible for connecting up user plane bearer (TkrUsr) and downlink user face carrying (LnrUsr), and the speech data among the TkrUsr is forwarded among the LnrUsr.When speaker UE changes, because upstream voice data wraps in the buffer memory of each node device in the network uplink path, in some cases, during the low user of the priority of talking, may there be the VoP of new and old two speaker UE simultaneously as the high User break of priority.At this moment, BM-SC need check the source IP address of the VoP among the TkrUsr, and only the VoP that current speaker UE is sent is forwarded among the LnrUsr, and the VoP of other UE is lost.

Four, PTT system flow

1, summation

Each sub-process of PTT business is described below.

Set up the professional public control bearer path of PTT at network side: promptly set up the up-downgoing chain of command bearer path in " MBMS carries expansion ", this bearer path is public control bearer path, professional shared by all PTT, different PTT is professional to be distinguished by the Target IP multicast address.Can set up the professional public control bearer path of PTT by the mode of means of signaling or Operation and Maintenance, consider in network and only set up once that present embodiment adopts the mode of Operation and Maintenance to set up.Each following sub-process is no longer described this sub-process in describing.

PTT service groups maintenance of information: in BM-SC, safeguard the UE group membership information that PTT service groups information and PTT service groups comprise.Described PTT service groups information comprises: (value is the PTT type to the MBMS bearer path attribute of this PTT business, arranged side by side with broadcast type or multicast type), the sign of this PTT business (multicast IP address, the MBMS service identification, PTT IMSI (IMSI International Mobile Subscriber Identity)), coverage attribute (the service area code of this PTT business, value is 0 to represent all sub-districts), the qos parameter of upstream and downstream user face bearer path (using when being used to set up PTT service bearer passage), PTT DRX cycle lengthcoefficient (the discontinuous receiving cycle length factor of PTT), page response probability initial value, the page response probability increases step-length, the page response repetition period (being used for PTT IMSI when paged, the access probability of the response paging of control UE).Described UE group membership information comprises: UE IMSI, will IP address allocated, rob power priority.Can there be multiple mode to safeguard PTT service groups information, such as operation backstage by BM-SC.Each following sub-process is no longer described this sub-process in describing.UE group membership information adds that the IP multicast address of this PTT group constitutes PTT pattern MBMS UE context; The various information that the PTT group is relevant constitute PTT pattern MBMS context.

UE activates the PTT business: UE and network connect, and carry out alternately, join a PTT group, set up the MBMS UE context of PTT pattern in BM-SC, GGSN, SGSN.UE gets back to idle condition then, and preparation receives the paging of this PTT business and becomes the hearer.If the GGSN of its ownership, SGSN, RNC also do not set up the MBMS context of this PTT business, in these nodes, set up the MBMS context of PTT pattern.

The processing that UE moves: when UE moves,, need in new SGSN and RNC, set up the MBMS UE context of PTT pattern, the MBMS UE context of deletion PTT pattern among former SGSN and the RNC if the SGSN of its ownership changes.UE gets back to idle condition then, and preparation receives the paging of this PTT business and becomes the hearer.If new ownership SGSN, RNC also do not set up the MBMS context of this PTT business, in these nodes, set up the MBMS context of PTT pattern.If there is not any MBMS UE context of this PTT business among old ownership SGSN, the RNC, the MBMS context of deletion PTT pattern in these nodes.

UE request [fighting for] PTT right of speech: trigger by certain UE, under BM-SC control, set up UpCtrl, DnCtrl, TkrUsr between this UE and the RNC, set up each RNC to the TkrUsr between the BM-SC (if there is no), set up LnrCtrl and LnrUsr (if there is no), so that realize the function that a user says, a plurality of user listens.

UE stops PTT and calls out: speaker UE triggers, and discharges UpCtrl, DnCtrl, the TkrUsr of this UE to RNC.

The PTT service bearer discharges: do not have the speaker after a period of time, BM-SC initiates to discharge each RNC to the TkrUsr between the BM-SC, LnrCtrl and LnrUsr.

UE deexcitation PTT business: UE leaves a PTT group, the MBMS UE context among deletion BM-SC, GGSN, SGSN, the RNC.If there is not any MBMS UE context of this PTT business among the GGSN of its ownership, SGSN, the RNC, the MBMS context of deletion PTT pattern in these nodes.

In the time-continuing process that PTT calls out, also following sub-process may take place:

The PTT that BM-SC or RNC can initiate to stop UE under following situation calls out: can not the authentication success as certain UE, and the PTT that RNC request BM-SC stops this UE calls out; Surpass the certain hour restriction when the time of speaking of certain speaker UE, maybe can not receive the liveliness message of this UE, BM-SC stops speaker's authority of this UE.

2, UE activates the PTT business

After the user chooses a PTT service groups sign and determines, just enter UE and activate the PTT operation flow.The flow process of UE activation process PTT business is described below as shown in Figure 6.

Step 601, if PDP (packet data protocol) context is not also set up, UE activates general PDP context.

Step 602, UE add the PDP Context that message sends to acquiescence with GMP (IPv4) or MLD (IPv6), so that receive the specific multicast MBMS bearer service that is identified by the ip multicast address.

Step 603, GGSN issue BM-SC with the MBMS authorization requests, make UE receive business datum so that activate UE; Then, BM-SC responds to the GGSN return authorization.

Step 604a, GGSN send MBMS notice request Notification Request (MBMS notice request) to SGSN, and described MBMS notice request comprises ip multicast address, APN, LinkedNSAPI.The GGSN that causes in order to prevent SGSN or UE from not supporting MBMS can not receive response, and GGSN starts the MBMS Active Timer.

Step 604b, SGSN return the response of MBMS notice request to GGSN: MBMS push-notification-answer (reason), wherein whether reason (Cause) expression MBMS context activation continues to carry out downwards.When not having in the response message that is received when successful, GGSN should not send any MBMS notification request message again, and this process finishes.

Step 605, SGSN to UE send request MBMS context activation (the ip multicast address, APN, Linked NSAPI, TI) so that request UE activates MBMS UE context.

Step 606, UE set up MBMS UE context, and send activation MBMS context request (ip multicast address, APN, MBMS_NSAPI, MBMS bearing capacity) to SGSN.

Step 607, if MBMS UE context is not set up, SGSN sends MBMS notice refusal request (reason) to GGSN.Then GGSN returns the response of MBMS notice refusal to SGSN.

Step 608, execution safety function are as authorizing UE.

Step 609, SGSN send Invoke Trace message to BSS.

Step 610, SGSN set up MBME UE context and the MBMS context request of being set up are issued GGSN.

Step 611, GGSN send the MBMS authorization requests to BM-SC, and BM-SC sets up MBMS UE context; Then, BM-SC returns the MBMS authorization response to GGSN.

Step 612, GGSN send the MBMS register requirement to BM-SC, and BM-SC returns the response of MBMS register requirement to GGSN: MBMS registers response.

Step 613, GGSN set up MBMS UE context, and SGSN issued in the MBMS UE context of setting up.

Step 614, if be not used in the MBMS bearer context of MBMS UE bearer service among the SGSN, SGSN sends the MBMS register requirement to GGSN, so that obtain the MBMS bearer context; Then MBMS returns the registration response to GGSN.

When the MBMS context of the PTT business that does not exist UE to activate among GGSN, the SGSN, execution in step 612,614 respectively is so that make GGSN, SGSN, RNC obtain the MBMS context.

Step 615, SGSN send MBMS session updates [beginning] request to RNC, so that carry out MBMS session updates [beginning] flow process, only set up the MBMS context of PTT business in RNC, do not set up user's face; Then, RNC returns MBMS session updates [beginning] response to SGSN.

If in the route district that RNC comprises, there is the UE that activates the PTT business, and do not set up the MBMS context of this PTT business among this RNC, SGSN initiates the MBMS session by step 615 and begins flow process is set up the PTT business in this RNC MBMS context, and notifies RNC to have the route area list of PTT business in session updates [beginning] message.When the route area list that has the PTT business changed, SGSN initiated MBMS session updates flow process by step 615 and requires RNC to upgrade route area list.

Begin to comprise in the request message the various information (except the information relevant with the group membership) of this PTT business in the MBMS session of step 612,614 MBMS registration reply message and step 615, specifying information is seen " maintenance of information of PTT service groups ".

Step 616, SGSN send Invoke Trace (it comprises Trace Reference, TraceType, Trigger Id, and OMC Identity) message to RAN.

Step 617, SGSN send to UE and activate MBMS context receipt.

According to the present invention, to step 617, UE can obtain the power of the robbing priority of this UE in this PTT business, the IP address (source address that is used for the upstream voice data IP bag of speaker UE) that BM-SC distributes to UE from BM-SC by step 611.

UE is by step 617, and the PTT IMSI, PTT DRX cycle length factor, page response probability initial value, the page response probability that obtain this PTT business from SGSN increase step-length, page response repetition period.

3, the UE processing of moving

When UE moves, if the SGSN of its ownership changes, need in new SGSN, set up the MBMS UE context of PTT pattern, the MBMS UE context of deletion PTT pattern among the former SGSN.UE gets back to idle condition then, and preparation receives the paging of this PTT business and becomes the hearer.Need to upgrade the MBMS context of affected each network node simultaneously.Below with reference to Fig. 7 the processing that UE moves is described.

Step 701, MBMS session updates [end] flow process.

If there is the MBMS context of this PTT business among the old RNC, and do not have the UE that activates the PTT business in the route district that this RNC comprised, then higher level SGSN initiates the MBMS context of MBMS conversation end flow process deletion PTT business by step 701.When the route area list that has the PTT business changed, SGSN initiated MBMS session updates flow process by step 701 and requires old RNC to upgrade route area list.

Step 702, when SGSN is sky without any user's interest MBMS bearer service (MBMSbearer service) and with MBMS service bearer corresponding " downstream node tabulation ", SGSN issues GGSN with MBMS de-registration request (MBMS De-Registration Request).GGSN deletes this SGSN sign from " downstream node tabulation " parameter, and returns MBMS to SGSN and nullify response (MBMSDe-Registration Response).

Step 703, if the MBMS bearer context of this PTT business not among the new SGSN, SGSN sends the MBMS register requirement to GGSN, so that obtain the MBMS context.

Step 704, MBMS session updates [beginning] flow process are only set up the MBMS context of PTT business in new RNC, do not set up user's face.

If in the route district that RNC comprises, there is the UE that activates the PTT business, and do not set up the MBMS context of this PTT business among this RNC, SGSN initiates the MBMS session by step 704 and begins flow process is set up the PTT business in this RNC MBMS context, and there is the route area list of PTT business in notice RNC.When the route area list that has the PTT business changed, SGSN initiated MBMS session updates flow process by step 704 and requires RNC to upgrade route area list.

4, UE request [fighting for] PTT right of speech

When there not being UE to take right of speech (each RNC does not set up or set up to the TkrUsr between the BM-SC, LnrCtrl and LnrUsr but is in idle condition (receiving TALK-BST-FREE message in the LnrCtrl carrying)) in the PTT group, or the priority of current speaker UE is lower than the priority of this UE, at this moment the user presses the key of giving orders or instructions, UE request [fighting for] PTT right of speech.Its flow process as shown in Figure 8.The flow process of UE request [fighting for] PTT right of speech is described below.

Three of UE and RNC RRC message (801a, 801d, 801e) realize that promptly speaker's empty port load-supporting passage sets up flow process in step 801, the flow chart, describe in front.Message 801b, 801c are used to set up Radio Link.

After step 802, application speaker RNC receive RRC connection request (RRC-CON-REQ) message, if the power of the robbing priority of this UE is higher than the limit priority [notes] of the current UE of this PTT business, on the UpCtrl bearer path, send talk request (TALK-BST-REQ) message to BM-SC; Comprise UEIMSI in the message and rob power priority, the value of these two cells obtains from RRC connection request (RRC-CON-REQ) message; RNC also upgrades the current UE limit priority, initiates " speaker UE carries to the P-T-P of RNC and sets up flow process ", and specific implementation is referring to patent application document " setting up the method for empty port load-supporting " during a kind of PTT of realization.

[annotate: the current UE limit priority of PTT business is the state variable of safeguarding in RNC, is the professional current speaker UE of this PTT, applies to become the power of robbing priority the highest among the speaker UE of this PTT business, and calling out at PTT is invalid value when not taking place].

Unusual flow process: if the power of the robbing priority of this UE is equal to or less than the limit priority of the current UE of this PTT business, or current area do not provide the PTT business, directly sends out RRC CONNECTIONREJECT message to this UE.UE gets back to idle pulley after receiving RRC CONNECTION REJECT message, and whole process finishes.

After step 803, BM-SC receive TALK-BST-REQ message, check the power of the robbing priority of this UE, conform to, and priority is higher than priority or the current speaker of not having of current speaker UE, determine that this UE is new speaker UE if check.BM-SC consecutive periods in the DnCtrl carrying sends TALK-BST-GRANT message, till receiving TALK-BST-ACK, comprises UE IMSI in the TALK-BST-GRANT message and robs power priority.

Unusual flow process: if priority is equal to or less than the priority of current speaker UE, BM-SC sends TALK-BST-REJ message on the DnCtrl bearer path, comprise UE IMSI in the TALK-BST-REJ message.Application speaker UE receives TALK-BST-REJ message on the DnCtrl bearer path, and the IMSI in the message conforms to the UE IMSI of self, indicates the user to be rejected; Application speaker RNC receives TALK-BST-REJ message on the DnCtrl bearer path, find that the IMSI in the message conforms to application speaker UE IMSI, and the RRC that initiates application speaker UE discharges flow process.

Step 804, BM-SC be consecutive periods transmission TALK-BST-BUSY message on LnrCtrl simultaneously, and message comprises the information identical with TALK-BST-GRANT.

Step 805, SGSN are after receiving TALK-BST-GRANT message in the DnCtrl carrying, if there is the MBMS context of this PTT business in this node, and the part of the ground loading between this SGSN of LnrUsr, LnrCtrl, TkrUsr and the higher level GGSN is not set up, and initiates to set up flow process with the ground loading of higher level GGSN.RNC is after receiving TALK-BST-GRANT message in the DnCtrl carrying, if there is the MBMS context of this PTT business in this node, and the part of the ground loading between this RNC of LnrUsr, LnrCtrl, TkrUsr and the higher level SGSN is not set up, and initiates to set up flow process with the ground loading of higher level SGSN.RNC is after receiving TALK-BST-GRANT message on the DnCtrl bearer path, if there is the MBMS context of this PTT business in this node, and LnrUsr, LnrCtrl, this RNC do not set up to the P-T-M carrying of hearer UE, to the coverage of this PTT business, exist this PTT user's route area list to get to occur simultaneously and obtain a set of cells, initiate " RNC carries to the P-T-M of hearer UE and sets up flow process " in these sub-districts, specific implementation is referring to patent application document " setting up the method for empty port load-supporting " during a kind of PTT of realization.The foundation of the ground loading passage of RNC and higher level SGSN and RNC are to the parallel processing of setting up of the P-T-M of hearer UE carrying.

TALK-BST-GRANT message on step 806, the DnCtrl bearer path is when arriving application speaker RNC, may apply for that the empty port load-supporting passage of speaker UE also do not build up, at this moment after RNC waits for that the empty port load-supporting passage is built up, this message is issued application speaker UE by the DnCtrl bearer path.Application speaker UE receives TALK-BST-GRANT message on the DnCtrl bearer path, and the IMSI in the message conforms to the UE IMSI of self, and the indication user can talk, and on the UpCtrl bearer path to BM-SC consecutive periods transmission TALK-BST-ACK message.

Old speaker UE receives TALK-BST-GRANT message on the DnCtrl bearer path, find that the IMSI in the message does not conform to the UE IMSI of self, rings off.Old speaker RNC receives TALK-BST-GRANT message on the DnCtrl bearer path, the IMSI in the discovery message does not conform to old speaker UE IMSI, and the RRC that discharges old speaker UE connects and is connected with Iu.

Step 807, UE send service request to SGSN.

Step 808, network carry out authentication and encryption to the PTT business of UE request.

Step 809, pass through when the UE authentication, SGSN sends MBMS UE context by MBMS UE link process to RNC.

Unusual flow process 1:BM-SC does not receive TALK-BST-ACK message if continue for some time after PTT calls out beginning, force to discharge the right of speech of current speaker UE.

Unusual flow process 2:RNC is after receiving first TALK-BST-ACK message, if do not receive that through after a while SGSN gives the MBMS UE Linking Request message of UE, request BM-SC forces to discharge the right of speech of current speaker UE.

5, RNC discharges the PTT right of speech

When SGSN to the UE failed authentication, send out the IU release command to RNC, RNC will discharge the right of speech of current UE.Below with reference to Fig. 9 the process that RNC discharges the PTT right of speech is described.

Step 901, speaker RNC send TALK-BST-REL message on the UpCtrl bearer path.

The RRC connection that step 902a-902b, speaker RNC discharge speaker UE is connected with Iu.

After step 903a, BM-SC receive TALK-BST-REL message, on the DnCtrl bearer path, send TALK-BST-FREE message.RNC is after receiving TALK-BST-FREE message on the DnCtrl, upgrading current UE highest priority state variable is invalid value.Allow other users to initiate the right of speech request.

Step 903b, BM-SC stop to send in the TALK-BST-BUSY message on the LnrCtrl bearer path, and the beginning consecutive periods sends TALK-BST-FREE message.After UE receives TALK-BST-FREE message, the current unmanned speech of indication user.

6, UE discharges the PTT right of speech

When the user loosens when giving orders or instructions key, UE discharges the PTT right of speech, and its flow process as shown in figure 10.Below with reference to Figure 10 the flow process that UE discharges the PTT right of speech is described in detail.

Step 1001, speaker UE stop to send TALK-BST-ACK message on the UpCtrl bearer path, the beginning consecutive periods sends TALK-BST-REL message, connect up to the RRC of speaker UE to be released.

After step 1002a-1002b, speaker RNC received TALK-BST-REL message, the RRC that discharges speaker UE connected and is connected with Iu.

After step 1003a, BM-SC receive TALK-BST-REL message, on the DnCtrl bearer path, send TALK-BST-FREE message.RNC is after receiving TALK-BST-FREE message on the DnCtrl, upgrading current UE highest priority state variable is invalid value.Allow other users to initiate the right of speech request.

Step 1003b, while BM-SC stop to send TALK-BST-BUSY message on the LnrCtrl bearer path, the beginning consecutive periods sends TALK-BST-FREE message.After UE receives TALK-BST-FREE message, the current unmanned speech of indication user.

7, BM-SC discharges the PTT right of speech

When the user talks the duration when surpassing certain-length, or do not receive TALK-BST-ACK message in a period of time, BM-SC forces UE to discharge the PTT right of speech, as shown in figure 11, describes its flow process below in detail.

Step 1101a, BM-SC send TALK-BST-FREE message on the DnCtrl bearer path; After RNC received TALK-BST-FREE message, upgrading current UE highest priority state variable was invalid value.Allow other users to initiate the right of speech request.

Step 1101b, BM-SC stop to send simultaneously TALK-BST-BUSY message on the LnrCtrl bearer path, the beginning consecutive periods sends TALK-BST-FREE message.After UE receives TALK-BST-FREE message, the current unmanned speech of indication user.

After step 1102a-1102b, speaker RNC received TALK-BST-FREE message, the RRC that discharges speaker UE connected and is connected with Iu.

8, PTT service bearer passage discharges

When each RNC is in established state to the TkrUsr between the BM-SC, LnrCtrl and LnrUsr, and the unmanned speech duration surpasses the scheduled time during length, BM-SC initiates to discharge each RNC to the TkrUsr between the BM-SC, LnrCtrl and LnrUsr, as shown in figure 12, describe its flow process below in detail.

Step 1201, BM-SC consecutive periods on the LnrCtrl bearer path sends TALK-BST-STOP message, and continues for some time.Hearer UE receives TALK-BST-STOP message, no longer receives the P-T-M carrying of RNC to hearer UE, and beginning paging receiving channel is realized discontinuous reception.Do not receive TALK-BST-BUSY or TALK-BST-FREE message when hearer UE continues for some time, UE also gets back to discontinuous receiving state.

Step 1202, then BM-SC sends TALK-BST-STOP message on the DnCtrl bearer path.

Step 1203, SGSN, RNC initiate to discharge flow process with the ground loading passage of superior node after receiving TALK-BST-STOP message on the DnCtrl bearer path.RNC after receiving TALK-BST-STOP message on the DnCtrl bearer path, releasing network side downlink space interface bearer path.

9, UE deexcitation PTT business

After UE selects to leave the PTT business and determines, initiate UE deexcitation PTT operation flow.As shown in figure 13, UE deexcitation PTT operation flow is described below.

Step 1301, UE send the PDP Context of IGMP Leave message (IGMP leave away message) to acquiescence, so that UE leaves by Internet Protocol Multicast sign and the determined PTT business in ip multicast address.

Step 1302, GGSN issue BM-SC with Leave Indication (indication of leaving away), and UE leaves the PTT business with expression.

Step 1303, after BM-SC receives the Indication message of leaving away, return UE RemovalRequest (UE removes request) to GGSN.

Step 1304, after GGSN receives the UE request of removing, GGSN issues SGSN with MBMS UE context deexcitation request.。

Step 1305, when SGSN receives because of overflow swashing the MBMS UE context deexcitation request that the restricted area causes, can send Deactivate MBMS Context Request (deexcitation MBMS context request) to UE.

Step 1306, UE delete MBMS UE Context (MBMS UE context), and send Deactivate MBMS Context Accept (deexcitation MBMS context receipt) to SGSN.

Step 1307, when UE is linked to RNC, SGSN issues RNC with MBMS UE De-LinkingRequest (MBMS UE goes linking request), and RNC deletes MBMS UE context and MBMS UE De-Linking Response (MBMS UE goes the link response) is issued SGSN.

Step 1308, MBMS session updates [end] flow process.

If have the MBMS context of this PTT business among the RNC, and do not have the UE that activates the PTT business in the route district that this RNC comprised, then higher level SGSN initiates the MBMS context of MBMS conversation end flow process deletion PTT business by step 1308.When the route area list that has the PTT business changed, SGSN initiated MBMS session updates flow process by step 1308 and requires RNC to upgrade route area list.

Step 1309, after SGSN receives Deactivate MBMS Context Accept, SGSN issues DeleteMBMS Context Request (deletion MBMS context request) and maintains the contextual GGSN of MBMS.

Step 1310, GGSN delete MBMS UE context and deexcitation indication (DeactivationIndication) are issued BM-SC, successfully deexcitation MBMS UE Context for confirmation.After BM-SC receives the deexcitation indication, delete MBMS UE context and send an acknowledge message to GGSN.

Step 1311, when GGSN is sky without any user's interest MBMS bearer service (MBMSbearer service) and with MBMS service bearer corresponding " downstream node tabulation ", GGSN issues BM-SC with MBMS de-registration request (MBMS De-Registration Request).BM-SC deletes this GGSN sign from " downstream node tabulation " parameter, and returns MBMS to GGSN and nullify response (MBMS De-Registration Response).

Step 1312, GGSN confirm the MBMS UE context of deexcitation SGSN by sending the MBMS context response to SGSN.Then, GGSN deletion MBMS UE context.

Step 1313, when SGSN is sky without any user's interest MBMS bearer service (MBMSbearer service) and with MBMS service bearer corresponding " downstream node tabulation ", SGSN issues GGSN with MBMS de-registration request (MBMS De-Registration Request).GGSN deletes this SGSN sign from " downstream node tabulation " parameter, and returns MBMS to SGSN and nullify response (MBMSDe-Registration Response).

10, PTT service security

For the fail safe of speaker UE, describe in " UE request [fighting for] PTT right of speech " flow process in front, by existing authentication of UMTS network and encryption flow, realize encrypting at radio access layer.In order to shorten speaker UE empty port load-supporting channel establishment time, the authentication ciphering flow process is placed on last execution.

For the fail safe of hearer UE, wish that non-group of interior user do not hear the speech of user in the group, can realize by application layer encryption.For the fail safe of descending multicast bear passage, MBMS has complete consideration, can directly use the safety approach of MBMS.The user obtains multicast key when adding the PTT business, therefore can not increase the time of PTT call setup flow process.

Though described the present invention by embodiment, those of ordinary skills know, without departing from the spirit and substance in the present invention, just can make the present invention that many distortion and variation are arranged, and scope of the present invention is limited to the appended claims.

Claims

1, a kind of putting call through immediately after connection system is characterized in that, comprising: speaker's user terminal, hearer's user terminal, apparatus for network node,

Network node equipment is used to set up speaker's user terminal to the professional public control carrying of the putting call through immediately after connection between hearer's user terminal, sets up speaker's user terminal to the putting call through immediately after connection service bearer context between hearer's user terminal; And according to the calling between putting call through immediately after connection service bearer context control speaker's user terminal and the hearer's user terminal.

2, putting call through immediately after connection according to claim 1 system is characterized in that described apparatus for network node comprises radio network controller, Serving GPRS Support Node, critical point GPRS Support Node and BroadCast MultiCast Service center,

3, putting call through immediately after connection according to claim 2 system is characterized in that described radio network controller comprises:

4, putting call through immediately after connection according to claim 2 system is characterized in that described BroadCast MultiCast Service center comprises:

5, a kind of method that realizes the putting call through immediately after connection business is characterized in that, described method comprises:

6, the method for realization putting call through immediately after connection business according to claim 5 is characterized in that, described network side node equipment comprises radio network controller, Serving GPRS Support Node, critical point GPRS Support Node and BroadCast MultiCast Service center.

7, the method for realization putting call through immediately after connection business according to claim 5 is characterized in that, the professional public control carrying of described putting call through immediately after connection comprises professional public control carrying of up putting call through immediately after connection and the professional public control carrying of descending putting call through immediately after connection.

8, the method for realization putting call through immediately after connection business according to claim 5, it is characterized in that described putting call through immediately after connection service bearer context comprises: the discontinuous receiving cycle length factor of QoS parameter, putting call through immediately after connection of MBMS carrying attribute, putting call through immediately after connection service identification, coverage attribute, upstream and downstream user face bearer path.

9, the method for realization putting call through immediately after connection business according to claim 6 is characterized in that, described step C further comprises:

C1, user terminal and network connect;

C2, set up the user terminal context at network side;

10, the method for realization putting call through immediately after connection business according to claim 9 is characterized in that, described user terminal context comprises: IMSI International Mobile Subscriber Identity, will IP address allocated, rob power priority.

11, the method for realization putting call through immediately after connection business according to claim 10, it is characterized in that, described step C3 specifically comprises: user terminal obtains the user terminal context from the BroadCast MultiCast Service center, obtain the putting call through immediately after connection bearer context from Serving GPRS Support Node.

12, the method for realization putting call through immediately after connection business according to claim 6 is characterized in that, described step D specifically comprises:

13, the method for realization putting call through immediately after connection business according to claim 12, it is characterized in that, do not have user terminal to take right of speech in the putting call through immediately after connection group, or the priority of current speaker's user terminal is when being lower than the priority of the user terminal of initiating the request right of speech, described step D1 specifically comprises:

D13, speaker's user terminal send speech data to network;

D14, hearer's user terminal receive the speech data of automatic network.

14, the method for realization putting call through immediately after connection business according to claim 12, it is characterized in that, when if the priority of current speaker's user terminal is not less than the priority of the user terminal of initiating the request right of speech, described step D1 specifically comprises: send Radio Resource control connection refuse information to user terminal, make user terminal get back to idle pulley.

15, the method for realization putting call through immediately after connection business according to claim 12 is characterized in that, also carries out after described step D1:

16, the method for realization putting call through immediately after connection business according to claim 15 is characterized in that, described D2 also comprises: discharge the empty port load-supporting of this user terminal to radio network controller.

17, the method for realization putting call through immediately after connection business according to claim 12, it is characterized in that, also carry out after described step D1: when not having the speaker at the fixed time, the upstream and downstream user face ground loading of downlink space interface carrying and this putting call through immediately after connection business is initiated to discharge in the BroadCast MultiCast Service center.

18, the method for realization putting call through immediately after connection business according to claim 5 is characterized in that, also carries out after execution in step C: user terminal deexcitation putting call through immediately after connection business.

19, the method for realization putting call through immediately after connection business according to claim 18 is characterized in that, described user terminal deexcitation putting call through immediately after connection business specifically comprises: at network side node unit deletion user terminal context.

20, the method for realization putting call through immediately after connection business according to claim 19 is characterized in that, described network side node equipment comprises radio network controller, Serving GPRS Support Node, critical point GPRS Support Node and BroadCast MultiCast Service center; Described user terminal deexcitation putting call through immediately after connection business also comprises: if in radio network controller, Serving GPRS Support Node and/or the critical point GPRS Support Node that user terminal belonged to when not having the Any user terminal context of this putting call through immediately after connection business, and deletion putting call through immediately after connection bearer context on described radio network controller, Serving GPRS Support Node, critical point GPRS Support Node.

21, the method for realization putting call through immediately after connection business according to claim 6, it is characterized in that, described step D also comprises: in the time-continuing process that putting call through immediately after connection is called out, if during this subscriber terminal authority failure, speaker's authority of this user terminal is cancelled at radio network controller request BroadCast MultiCast Service center.

22, the method for realization putting call through immediately after connection business according to claim 6, it is characterized in that, described step D also comprises: surpassed for first scheduled time when the speech time of speaker's user terminal, or the BroadCast MultiCast Service center do not receive the liveliness message of this user terminal in second scheduled time, and speaker's authority of this user terminal is cancelled at the BroadCast MultiCast Service center.

23, the method for realization putting call through immediately after connection business according to claim 9, it is characterized in that, described method also comprises: when moving because of user terminal when making the Serving GPRS Support Node of its ownership be changed to the Serving GPRS Support Node of current ownership by the Serving GPRS Support Node of former ownership, carry out following step:

24, the method for realization putting call through immediately after connection business according to claim 23, it is characterized in that, described step e also comprises: if the Serving GPRS Support Node of the current ownership of user terminal and/or radio network controller are not set up the putting call through immediately after connection bearer context, set up the putting call through immediately after connection bearer context at described Serving GPRS Support Node and/or radio network controller.

25, according to the method for claim 23 or 24 described realization putting call through immediately after connection business, it is characterized in that, described step e also comprises: if there is not the user terminal context in the Serving GPRS Support Node of the former ownership of user terminal and/or the radio network controller, and deletion putting call through immediately after connection bearer context on described Serving GPRS Support Node and/or radio network controller.

26, a kind of radio network controller is characterized in that, comprising:

27, a kind of BroadCast MultiCast Service center is characterized in that, comprising: