CN103220823A - Point-to-point call release method and device in time division-long term evolution (TD-LTE) digital trunked communication system - Google Patents
Point-to-point call release method and device in time division-long term evolution (TD-LTE) digital trunked communication system Download PDFInfo
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Abstract
The invention provides a point-to-point call release method and device in a time division-long term evolution (TD-LTE) digital trunked communication system. An LTE core network device respectively sends point-to-point release messages to first user equipment (UE) and second UE which carry out point-to-point communication, the LTE core network device obtains point-to-point release completion messages respectively from the first UE and the second UE, and wireless load bearing resource release is carried out on the first UE and the second UE according to the point-to-point release completion messages. Through the adoption of the point-to-point call release method and device in the TD-LTE digital trunked communication system, communication time delay and network architecture complexity can be reduced.
Description
Technical field
The present invention relates to mobile communication technology, relate in particular to a kind of time-division Long Term Evolution (Time Division Long Term Evolution, TD-LTE) point-to-point call release method and equipment in the digital cluster system.
Background technology
At present, in the digital clustering communication system that adopts the TD-LTE technology, when carrying out point to point call, can adopt three kinds of schemes that speech business is provided, comprise: the single radio audio call is communicated with (Single Radio Voice Call Continuity, be called for short SRVCC), circuit domain rollback (Circuit Switch FallBack is called for short CSFB) and based on the voice (Voice over Long Term Evolution is called for short VoLTE) of Long Term Evolution.
Above-mentioned three kinds of existing schemes all need the support in circuit switching (Circuit Switch is called for short CS) territory or internet protocol multi-media sub-system (Internet Protocol Multimedia Subsystem is called for short IMS) territory.In carrying out the point to point call dispose procedure, realize that by CS territory equipment or IMS territory Equipment Control resource discharges, the LTE core net realizes message transparent transmission function.Particularly, the LTE core net will pass through CS territory equipment or IMS territory equipment from the message of user's equipment (User Equipment is called for short UE) or base station (eNode B is called for short eNB), and the message of CS territory equipment or IMS territory equipment is passed through UE or eNB.
Adopt above-mentioned three kinds of existing schemes, all need be in the basic deploy CS territory or the IMS territory of LTE core net, make the network architecture complicated more, and LTE core net and CS territory or IMS territory carry out Signalling exchange, increased communication delay end to end.
Summary of the invention
First aspect of the present invention provides point-to-point call release method in a kind of TD-LTE digital cluster system, in order to solve defective of the prior art, reduces communication delay and network architecture complexity.
Another aspect of the present invention provides a kind of Long Term Evolution (Long Term Evolution is called for short LTE) equipment of the core network, in order to solve defective of the prior art, reduces communication delay and network architecture complexity.
Another aspect of the present invention provides a kind of user equipment (UE), in order to solve defective of the prior art, reduces communication delay.
First aspect of the present invention provides a kind of, and point-to-point call release method in the time-division Long Term Evolution TD-LTE digital cluster system comprises:
Long Term Evolution LTE equipment sends point-to-point release message respectively to first user equipment (UE) that carries out point-to-point communication and the 2nd UE;
Described LTE equipment obtains respectively the point-to-point Release complete from a described UE and described the 2nd UE, according to described point-to-point Release complete a described UE and described the 2nd UE is carried out radio bearer resources and discharges.
Aforesaid method, wherein, described LTE equipment also comprised before a UE who carries out point-to-point communication and the 2nd UE send point-to-point release message respectively:
Described LTE equipment receives the point-to-point disconnection connection message from a described UE, and described point-to-point disconnection connection message comprises the sign ID of evolved packet system EPS carrying;
Or described LTE equipment receives the point to point call release command from dispatching desk, and described point to point call release command comprises tagged word of locating a described UE or the tagged word of locating described the 2nd UE.
Aforesaid method, wherein, describedly a described UE and described the 2nd UE are carried out radio bearer resources discharge and comprise:
Described LTE equipment sends evolution RAB E-RAB release command message respectively to an eNB and the 2nd eNB, and described E-RAB release command message comprises: deexcitation EPS bearer context request message;
A described eNB sends radio resource control RRC to a described UE and described the 2nd UE respectively with described the 2nd eNB and is connected reconfiguration message, and described RRC connects reconfiguration message and comprises: described deexcitation EPS bearer context request message;
A described UE and the 2nd UE return RRC to a described eNB and described the 2nd eNB respectively and are connected to reshuffle and finish message;
A described eNB and described the 2nd eNB return E-RAB to described LTE equipment and discharge response message;
A described UE and the 2nd UE accept message to a described eNB and described the 2nd eNB transmission deexcitation EPS bearer context respectively by the uplink information transmission;
A described eNB and described the 2nd eNB send described deexcitation EPS bearer context by up Non-Access Stratum NAS transmission to described LTE equipment and accept message.
Another aspect of the present invention provides point-to-point call release method in a kind of time-division Long Term Evolution TD-LTE digital cluster system, comprising:
First user equipment (UE) receives the point-to-point release message from Long Term Evolution LTE equipment;
A described UE returns point-to-point Release complete to described LTE equipment so that described LTE equipment according to described point-to-point Release complete to a described UE with carry out radio bearer resources with the 2nd UE that a described UE carries out point-to-point communication and discharge.
Aforesaid method wherein, before the point-to-point release message of described UE reception from LTE equipment, also comprises:
A described UE sends point-to-point disconnection connection message to described LTE equipment, and described point-to-point disconnection connection message comprises the sign ID of evolved packet system EPS carrying, so that described LTE equipment sends point-to-point release message to a described UE.
Another aspect of the present invention provides a kind of Long Term Evolution LTE equipment of the core network, comprising:
Transmitting element is used for sending point-to-point release message respectively to first user equipment (UE) that carries out point-to-point communication and the 2nd UE;
Receiving element is used to obtain respectively the point-to-point Release complete from a described UE and described the 2nd UE;
The resource releasing unit is used for according to described point-to-point Release complete a described UE and described the 2nd UE being carried out radio bearer resources release.
Aforesaid equipment, wherein,
Described receiving element also is used to receive the point-to-point disconnection connection message from a described UE, and described point-to-point disconnection connection message comprises the sign ID of evolved packet system EPS carrying; Described transmitting element specifically is used for sending point-to-point release message respectively to first user equipment (UE) that carries out point-to-point communication and the 2nd UE after described receiving element receives described point-to-point disconnection connection message;
Or described equipment also comprises: the schedule information acquiring unit, be used to receive point to point call release command from dispatching desk, and described point to point call release command comprises tagged word of locating a described UE or the tagged word of locating described the 2nd UE; Described transmitting element specifically is used for sending point-to-point release message respectively to first user equipment (UE) that carries out point-to-point communication and the 2nd UE after described schedule information acquiring unit receives described point to point call release command.
Aforesaid equipment, wherein, described resource releasing unit comprises:
Release command sends subelement, be used for sending the E-RAB release command message respectively to an eNB and the 2nd eNB, described E-RAB release command message comprises: deexcitation evolved packet system EPS bearer context request message, so that sending radio resource control RRC to a described UE and described the 2nd UE respectively with described the 2nd eNB, a described eNB is connected reconfiguration message, described RRC connects reconfiguration message and comprises: described deexcitation EPS bearer context request message, a described eNB and described the 2nd eNB receive RRC from a described UE and the 2nd UE respectively and are connected to reshuffle and finish message and receive subelement and return E-RAB and discharge response message to discharging response, and a described eNB and described the 2nd eNB receive deexcitation EPS bearer context that a UE and the 2nd UE send by the uplink information transmission respectively and accept message and receive subelement by up Non-Access Stratum NAS transmission to described release response to send described deexcitation EPS bearer context and accept message;
Discharge response and receive subelement, be used to receive E-RAB from a described eNB and described the 2nd eNB and discharge a response message and a described eNB and described the 2nd eNB and accept message by the described deexcitation EPS bearer context that up Non-Access Stratum NAS transmission sends.
Another aspect of the present invention provides a kind of user equipment (UE), comprising:
Receiving element is used to receive the point-to-point release message from Long Term Evolution LTE equipment;
Transmitting element is used for returning point-to-point Release complete to described LTE equipment so that described LTE equipment according to described point-to-point Release complete to described UE with carry out the Radio Resource carrying with UE that described UE carries out point-to-point communication and discharge.
Aforesaid UE, wherein, described transmitting element also is used for sending point-to-point disconnection connection message to described LTE equipment, and described point-to-point disconnection connection message comprises the sign ID of evolved packet system EPS carrying, so that described LTE equipment sends described point-to-point release message to described UE.
According to the foregoing invention content as seen, the LTE equipment of the core network sends point-to-point release message to two UE that carry out point-to-point communication, the point-to-point Release complete triggering LTE equipment of the core network of replying according to UE carries out radio bearer resources release to these two UE, discharges thereby finish point to point call.Adopt the LTE equipment of the core network can realize the point to point call dispose procedure, and needn't be in communication system framework CS territory or IMS territory, thereby reduced communication delay and network architecture complexity.
Description of drawings
Fig. 1 is the flow chart of point-to-point call release method in the TD-LTE digital cluster system of the embodiment of the invention one;
Fig. 2 is the flow chart of point-to-point call release method in the TD-LTE digital cluster system of the embodiment of the invention two;
Fig. 3 is the signaling process figure of point-to-point call release method in the TD-LTE digital cluster system of the embodiment of the invention three;
Fig. 4 is the structural representation of the LTE equipment of the core network of the embodiment of the invention four;
Fig. 5 is the structural representation of the UE of the embodiment of the invention five.
Embodiment
The present invention improves the point to point call dispose procedure existing by improving the Message Processing flow process of LTE core net.Point to point call set up finish after, calling UE and called UE are carried out point-to-point conversation, when needs finish conversation, adopt the LTE core net to realize point to point call release, below are introduced by the embodiment of the invention one to the embodiment of the invention five.
Fig. 1 is the flow chart of point-to-point call release method in the TD-LTE digital cluster system of the embodiment of the invention one.As shown in Figure 1, this method comprises following process at least.
Step 101:LTE equipment of the core network sends point-to-point release message respectively to a UE who carries out point-to-point communication and the 2nd UE.
Step 102:LTE equipment of the core network obtains respectively the point-to-point Release complete from a UE and the 2nd UE, according to point-to-point Release complete the one UE and the 2nd UE is carried out radio bearer resources and discharges.
In the embodiment of the invention one, in the processing messages of LTE equipment of the core network, increase point-to-point release message and some Release complete, and the treatment mechanism of according to point-to-point Release complete the UE of point-to-point communication being carried out radio bearer resources release for the increase of LTE equipment of the core network, the LTE equipment of the core network sends point-to-point release message to two UE that carry out point-to-point communication, the point-to-point Release complete triggering LTE equipment of the core network of replying according to UE carries out radio bearer resources release to these two UE, discharges thereby finish point to point call.。Adopt the LTE equipment of the core network can realize the point to point call dispose procedure, and needn't be in communication system framework CS territory or IMS territory, thereby reduced communication delay and network architecture complexity.
Fig. 2 is the flow chart of point-to-point call release method in the TD-LTE digital cluster system of the embodiment of the invention two.As shown in Figure 2, this method comprises following process at least.
Step 201: a UE receives the point-to-point release message from the LTE equipment of the core network.
Step 202: a UE returns point-to-point Release complete to the LTE equipment of the core network so that the LTE equipment of the core network according to point-to-point Release complete to a UE with carry out radio bearer resources with the 2nd UE that a UE carries out point-to-point communication and discharge.
In the embodiment of the invention two, in the processing messages of LTE equipment of the core network, increase point-to-point release message and some Release complete, and the treatment mechanism of according to point-to-point Release complete the UE of point-to-point communication being carried out radio bearer resources release for the increase of LTE equipment of the core network, UE is after receiving the point-to-point release message that the LTE equipment of the core network sends, point-to-point Release complete to the answer of LTE equipment of the core network, thereby trigger the LTE equipment of the core network UE that carries out point to point call is carried out radio bearer resources release, finish point to point call and discharge.Adopt the LTE equipment of the core network can realize the point to point call dispose procedure, and needn't be in communication system framework CS territory or IMS territory, thereby reduced communication delay and network architecture complexity.
More than respectively the processing method of LTE equipment of the core network and UE is illustrated by the embodiment of the invention one and the embodiment of the invention two, below introduce the detailed signaling process of point to point call dispose procedure in the TD-LTE digital cluster system by the embodiment of the invention three.
Fig. 3 is the signaling process figure of point-to-point call release method in the TD-LTE digital cluster system of the embodiment of the invention three.Referring to Fig. 3, the node that relates in this process comprises two UE, two base stations (eNode B is called for short eNB) and LTE equipment of the core network, and wherein, UE1 and UE2 are for carrying out the point to point call both sides, and eNB1 is the base station that is connected with UE1, and eNB2 is the base station that is connected with UE2.As shown in Figure 3, this method comprises following process.
Step 301:UE1 sends point-to-point disconnection to the LTE equipment of the core network and connects (PTP DISCONNECT) message.
In this step, point-to-point disconnection connection message comprises the identify label (Identity is called for short ID) of evolved packet system (Evolved Packet System is called for short EPS) carrying.In the both sides UE that carries out point to point call, a side UE (is example with UE1) is arranged, and when hanging up, this UE sends point-to-point disconnection connection message to the LTE equipment of the core network, triggers the point to point call dispose procedure.This point-to-point disconnection connection message belongs to Non-Access Stratum (Non-Access Stratum is called for short NAS) message.Because this message belongs to NAS message, the LTE equipment of the core network can be known the ID of the UE1 that initiates this message after receiving this message.UE1 carries the ID of EPS carrying in this message when initiating point-to-point disconnection connection message, adopt this ID sign to need the EPS carrying of the point to point call correspondence that disconnects.
After step 301, execution in step 311 and step 321.
Step 302:LTE equipment of the core network receives the point to point call release command from dispatching desk.
In this step, the point to point call release command comprises the tagged word of positioning UE 1 or the tagged word of positioning UE 2.Above-mentioned tagged word includes but not limited to: ID, carrying ID or session id.When the dispatcher of LTE digital cluster system need be taken out stitches to ongoing point-to-point conversation, send the point to point call release command by the dispatching desk in this group system to the LTE equipment of the core network, trigger the point to point call dispose procedure from network side.If the LTE digital cluster system is provided with the maximum duration of point to point call, after the point-to-point air time surpasses this maximum duration, also send the point to point call release command to the LTE equipment of the core network, trigger the point to point call dispose procedure from network side by above-mentioned dispatching desk.
After step 302, execution in step 311 and step 321.
Above-mentioned steps 301 and step 302 all can be used as the trigger condition of point to point call dispose procedure.At a point to point call dispose procedure, can include only step 301, after step 301, execution in step 311 and step 321; Perhaps, include only step 302, after step 302, execution in step 311 and step 321.
After step 301 or step 302, the LTE equipment of the core network receives the point-to-point disconnection connection message from UE1, or the LTE equipment of the core network receives the point to point call release command from dispatching desk, execution in step 311 and step 321 then.
Step 311:LTE equipment of the core network sends point-to-point release (PTP RELEASE) message to UE1.
In this step, point-to-point release message also belongs to NAS message.After step 311, execution in step 312.
Step 312:UE1 returns point-to-point release to the LTE equipment of the core network and finishes (PTP RELEASE COMPLETE) message.
In this step, UE1 returns point-to-point Release complete to the LTE equipment of the core network behind the point-to-point release message that receives from the LTE equipment of the core network.Point-to-point Release complete also belongs to NAS message.
After step 312, the LTE equipment of the core network carries out radio bearer resources according to point-to-point Release complete to UE1 and discharges, and concrete, the process that this radio bearer resources discharges may further comprise the steps 313 to step 318.
Step 313:LTE equipment of the core network sends evolution RAB (Evolved-Radio Access Bearer is called for short E-RAB) release command message to eNB1.
In this step, E-RAB release command (E-RAB RELEASE COMMAND) message comprises: deexcitation EPS bearer context request message.Deexcitation EPS bearer context request (Deactivate EPS bearer context request) message belongs to NAS message.The ID of the EPS carrying of carrying in the point-to-point disconnection connection message of LTE equipment of the core network according to the UE1 transmission, perhaps the tagged word of the positioning UE 1 of carrying in the point to point call release command according to the dispatching desk transmission or the tagged word of positioning UE 2 are determined the E-RAB resource in the E-RAB release command message.
After step 313, eNB1 handles the E-RAB dispose procedure, eNB1 carries out the RRC reprovision to UE1, discharge Data Radio Bearer (the Data Radio Bearer of corresponding point to point call, be called for short DRB) and discharge S1 interface relevant bearer resource, reply E-RAB to the LTE equipment of the core network then and discharge response message.Referring to step 314 to step 316.
Step 314:eNB1 sends radio resource control (Radio Resource Control is called for short RRC) to UE1 and connects reconfiguration message.
In this step, RRC connects and to reshuffle (RRC Connection Reconfiguration) message and comprise: deexcitation EPS bearer context request message.
Step 315:UE1 returns RRC to eNB1 and connects to reshuffle and finish (RRC Connection Reconfiguration Complete) message.
Step 316:eNB1 returns E-RAB to the LTE equipment of the core network and discharges response (E-RAB RELEASE Response) message.
Step 317:UE1 carries out uplink information transmission (Uplink Information Transfer) to eNB1, sends deexcitation EPS bearer context by the uplink information transmission to eNB1 and accepts (Deactivate EPS bearer context accept) message.
Step 318:eNB1 carries out up NAS transmission (UL NAS TRANSPORT) to the LTE equipment of the core network, sends deexcitation EPS bearer context by up NAS transmission to the LTE equipment of the core network and accepts message.
Step 321:LTE equipment of the core network sends point-to-point release message to UE2.
In this step, point-to-point release message also belongs to NAS message.After step 321, execution in step 322.
Step 322:UE2 returns point-to-point Release complete to the LTE equipment of the core network.
In this step, UE2 returns point-to-point Release complete to the LTE equipment of the core network behind the point-to-point release message that receives from the LTE equipment of the core network.Point-to-point Release complete also belongs to NAS message.
After step 322, the LTE equipment of the core network carries out radio bearer resources according to point-to-point Release complete to UE2 and discharges, and concrete, the process that this radio bearer resources discharges may further comprise the steps 323 to step 328.
Step 323:LTE equipment of the core network sends the E-RAB release command message to eNB2.
In this step, the E-RAB release command message comprises: deexcitation EPS bearer context request message.Deexcitation EPS bearer context request message belongs to NAS message.
After step 323, eNB2 handles the E-RAB dispose procedure, and eNB2 carries out the RRC reprovision to UE2, discharges the DRB of corresponding point to point call, and discharges S1 interface relevant bearer resource, replys E-RAB to the LTE equipment of the core network then and discharges response message.Referring to step 324 to step 326.
Step 324:eNB2 sends RRC to UE2 and connects reconfiguration message.
In this step, RRC connection reconfiguration message comprises: deexcitation EPS bearer context request message.
Step 325:UE2 returns RRC to eNB2 and connects to reshuffle and finish message.
Step 326:eNB2 returns E-RAB to the LTE equipment of the core network and discharges response message.
Step 327:UE2 carries out the uplink information transmission to eNB2, sends deexcitation EPS bearer context by the uplink information transmission to eNB2 and accepts message.
Step 328:eNB2 carries out up NAS transmission to the LTE equipment of the core network, sends deexcitation EPS bearer context by up NAS transmission to the LTE equipment of the core network and accepts message.
Above-mentioned steps 321 can be carried out simultaneously with step 311.Step 312 is carried out after step 311 according to said sequence to step 318, and step 322 is carried out after step 321 according to said sequence to step 328, and step 312 to the process and step 322 to the process of step 328 of step 318 can the while executed in parallel.Above-mentioned steps 321 is to step 328, adopt respectively and UE2 and/or eNB2 are handled with step 311 to the identical method of step 318, the process of failing to describe in detail to the step 328 in step 321 can be referring to the processing procedure of above-mentioned steps 311 UE1 and/or eNB1 to the step 318.
In the embodiment of the invention three, the LTE equipment of the core network sends point-to-point release message to UE, UE replys point-to-point Release complete to the LTE equipment of the core network, trigger the LTE equipment of the core network according to this point-to-point Release complete the UE that carries out point to point call is carried out radio bearer resources release, finish point to point call and discharge.Adopt the LTE equipment of the core network can realize the point to point call dispose procedure, and needn't be in communication system framework CS territory or IMS territory, thereby reduced communication delay and network architecture complexity.And, can initiate by the UE that carries out point-to-point conversation to interrupt triggering above-mentioned dispose procedure, perhaps initiate dispose procedure from network side by the group system controller, strengthened the control flexibility of dispose procedure.
Fig. 4 is the structural representation of the LTE equipment of the core network of the embodiment of the invention four.As shown in Figure 4, this LTE equipment of the core network comprises at least: transmitting element 41, receiving element 42 and resource releasing unit 43.
Wherein, transmitting element 41 is used for sending point-to-point release message respectively to a UE who carries out point-to-point communication and the 2nd UE.
Receiving element 42 is used to obtain respectively the point-to-point Release complete from a UE and the 2nd UE.
On the basis of technique scheme, further, receiving element 42 also is used to receive the point-to-point disconnection connection message from a UE.This point-to-point disconnection connection message comprises the ID of EPS carrying.Transmitting element 41 specifically is used for sending point-to-point release message respectively to first user equipment (UE) that carries out point-to-point communication and the 2nd UE after receiving element 42 receives point-to-point disconnection connection message.
Perhaps, this equipment also comprises: schedule information acquiring unit 44.Schedule information acquiring unit 44 is used to receive the point to point call release command from dispatching desk.The point to point call release command comprises tagged word of locating a UE or the tagged word of locating the 2nd UE.Transmitting element 41 specifically is used for sending point-to-point release message respectively to first user equipment (UE) that carries out point-to-point communication and the 2nd UE after schedule information acquiring unit 44 receives the point to point call release command.
On the basis of technique scheme, further, resource releasing unit 43 comprises: release command sends subelement 431 and discharges response and receives subelement 432.
Release command sends subelement 431 and is used for sending the E-RAB release command message respectively to an eNB and the 2nd eNB, the E-RAB release command message comprises: deexcitation EPS bearer context request message, so that sending RRC to a UE and the 2nd UE respectively with the 2nd eNB, an eNB is connected reconfiguration message, RRC connects reconfiguration message and comprises: deexcitation EPS bearer context request message, the one eNB and the 2nd eNB receive RRC from a UE and the 2nd UE respectively and are connected to reshuffle and finish message and receive subelement 432 and return E-RAB and discharge response message to discharging response, and an eNB and the 2nd eNB receive deexcitation EPS bearer context that a UE and the 2nd UE send by the uplink information transmission respectively and accept message and receive subelement 432 and send deexcitation EPS bearer contexts and accept message to discharging response by up NAS transmission.
Discharging response receives subelement 432 and is used to receive E-RAB from an eNB and the 2nd eNB and discharges a response message and an eNB and the 2nd eNB and accept message by the deexcitation EPS bearer context that up Non-Access Stratum NAS transmission sends.
In the embodiment of the invention four, the transmitting element of LTE equipment of the core network sends point-to-point release message to UE, the receiving element of LTE equipment of the core network receives the point-to-point Release complete that UE returns, the resource releasing unit that triggers the LTE equipment of the core network carries out radio bearer resources to the UE that carries out point to point call and discharges, and finishes point to point call and discharges.Adopt the LTE equipment of the core network can realize the point to point call dispose procedure, and needn't be in communication system framework CS territory or IMS territory, thereby reduced communication delay and network architecture complexity.
Fig. 5 is the structural representation of the UE of the embodiment of the invention five.As shown in Figure 5, this UE comprises: receiving element 51 and transmitting element 52.
Wherein, receiving element 51 is used to receive the point-to-point release message from the LTE equipment of the core network.
Transmitting element 52 is used for returning point-to-point Release complete to the LTE equipment of the core network so that the LTE equipment of the core network according to point-to-point Release complete to this UE with carry out the Radio Resource carrying with UE that this UE carries out point-to-point communication and discharge.
On the basis of technique scheme, further, transmitting element 52 also is used for sending point-to-point disconnection connection message to the LTE equipment of the core network, and point-to-point disconnection connection message comprises the ID of EPS carrying, so that the LTE equipment of the core network sends point-to-point release message to UE.
In the embodiment of the invention five, the receiving element of UE is after receiving the point-to-point release message that the LTE equipment of the core network sends, the point-to-point Release complete that the transmitting element of UE is replied to the LTE equipment of the core network, thereby trigger the LTE equipment of the core network UE that carries out point to point call is carried out radio bearer resources release, finish point to point call and discharge.Adopt the LTE equipment of the core network can realize the point to point call dispose procedure, and needn't be in communication system framework CS territory or IMS territory, thereby reduced communication delay and network architecture complexity.
The concrete manner of execution of each component units among the LTE equipment of the core network of the invention described above embodiment four and the UE of the embodiment of the invention five can be named the description of method for releasing process with reference to the invention described above embodiment one point-to-point meeting to the embodiment of the invention three, does not repeat them here.
More than pass through the embodiment of the invention one to the embodiment of the invention five, point to point call method for releasing of the present invention, LTE equipment of the core network and UE are introduced, the process that above-mentioned point to point call discharges is carried out after point to point call foundation is finished.The process that the present invention sets up point to point call does not limit, and can adopt several different methods to finish point to point call and set up process.Below only a kind of preferable point to point call wherein being set up process is introduced.
The first step: calling UE (representing with UE1) is initiated point-to-point (Point To Point, PTP) calling to the LTE equipment of the core network.
Particularly, can be, calling UE sends NAS layer message to calling UE place eNB (representing with eNB1), and this NAS layer message can be specially PTP and set up (PTP SETUP) message.Afterwards, give the LTE equipment of the core network by calling UE place eNB with this PTP SETUP forwards again.
Wherein, the PTP SETUP message that sends of above-mentioned calling UE can be to be carried at RRC to connect the RRC that sets up in the process and connect to set up and finish in (RRC Connection Setup Complete) message.Perhaps, when not needing to set up the RRC connection, calling UE directly is carried at this PTP SETUP message in uplink information transmission (Uplink Information Transfer) message.
Particularly, if calling UE is initiating to be in free time (IDLE) attitude before the point to point call, perhaps, if be in connection (CONNECTED) attitude and be in the uplink loss state, or there is not a Physical Uplink Control Channel (Physical Uplink Control Channel, PUCCH) etc. during ascending resource, can initiate to insert at random.
For example, random access procedure can comprise: calling UE sends to calling UE place eNB and inserts (Random Access, RA) lead code (RA Preamble) message at random; Calling UE place eNB returns accidental access response (RA Response) message to calling UE; Calling UE place eNB sends RRC to calling UE and sets up request (RRC Connection Request) message; Calling UE sends RRC connection foundation to calling UE place eNB and finishes (RRC Connection Setup Complete) message.
After calling UE and calling UE place eNB set up RRC and be connected, calling UE place eNB can be carried at this PTP SETUP message in the initialization UE message (INITIAL UE MESSAGE) and send to the LTE equipment of the core network.Afterwards, the LTE equipment of the core network can carry out authentication and security processes with calling UE.
Second step: the LTE equipment of the core network is handled according to the current business state of called UE (representing with UE2).
After the authentication of calling UE and fail safe are passed through, can inquire about called context according to the called number that carries in the PTP SETUP message, thereby obtain the current business state of called UE, and carry out following processing:
1) if the current business state is an Idle state:
The LTE equipment of the core network is initiated paging, for example, the LTE equipment of the core network sends PTT paging (Push To Talk PAGING) message to called UE place eNB (representing with eNB2), can carry the sign of called UE in this PTT PAGING message, for example, the international mobile subscriber identity of called UE (International Mobile Subscriber Identity, IMSI).Wherein, called UE place eNB is called UE place eNB, can be obtained by the CAMEL-Subscription-Information of LTE equipment of the core network by inquiry UE.Follow-up flow process can be referring to following description.
2) if being group, the current business state monitors attitude
The LTE equipment of the core network is judged the priority of the group that called UE is being monitored and the priority of the current point to point call that carries out, if group's priority height, then the LTE equipment of the core network is no longer initiated subsequent process, and active procedure finishes.Wherein above-mentioned priority can preestablish.
If the priority height of point to point call, then the LTE equipment of the core network is initiated paging, and for example, the LTE equipment of the core network sends PTT PAGING message to called UE place eNB, wherein carries the IMSI of called UE.Follow-up flow process can be referring to following description.
3) if the current business state is the speaker of a group attitude
The LTE equipment of the core network is not initiated called paging, refuses this calling.At this moment, the LTE equipment of the core network can send discharge (RELEASE) message to calling UE, and calling UE is received after the RELEASE message to return to discharge to the LTE equipment of the core network and finished (RELEASE COMPLTE) message.
4) if the current business state is that (Packet Switch, PS) business is carried out attitude in packet switching
The LTE equipment of the core network directly sends NAS message, as PTP SETUP message, gives called UE.
5) if the current business state is speaker of group and PS service concurrence attitude (speaker of group+PS business)
The LTE equipment of the core network is not initiated called paging, refuses this calling.At this moment, the LTE equipment of the core network can send discharge (RELEASE) message to calling UE, and calling UE is received after the RELEASE message to return to discharge to the LTE equipment of the core network and finished (RELEASE COMPLTE) message.
6) if being group, monitors and PS service concurrence attitude (monitoring+PS of group business) the current business state
The LTE equipment of the core network is judged the priority of the group that called UE is being monitored and the priority of the current point to point call that carries out, if group's priority height, then the LTE equipment of the core network is no longer initiated subsequent process, and active procedure finishes.
If the priority height of point to point call, then the LTE equipment of the core network directly sends NAS message, as PTP SETUP message, gives called UE.Follow-up flow process can be referring to following description
7) if the current business state is the point-to-point service attitude
The LTE equipment of the core network is not initiated called paging, refuses this calling.
The business state of above-mentioned UE is as follows with the RRC state relation that UE eats dishes without rice or wine: Idle state and the equal corresponding RRC IDLE attitude of group's monitoring attitude of only making group service, all the other are RRC CONNECTION state.
Wherein, according to above-mentioned result, paging called UE if desired, then the LTE equipment of the core network sends PTT PAGING message to called UE place eNB, after then called UE place eNB receives PTT PAGING message, (Group Paging Control CHannel GPCCH) goes up transmission paging (PAGING) message at the clustered paging control channel according to the called IMS I that wherein carries.
The 3rd step: called UE is carried out RRC and is connected the process of setting up.
Wherein, can comprise: called UE sends RA Preamble message to called UE place eNB; Called UE place eNB returns RA Response message to called UE; Called UE place eNB sends RRC to called UE and sets up request (RRC Connection Request) message; Called UE sends RRC connection foundation to called UE place eNB and finishes (RRC Connection Setup Complete) message.
Can carry dedicated service request (the Trunk SERVICE REQUEST) message of NAS in the RRC connection setup complete message wherein, afterwards, called UE place eNB can be carried at this Trunk SERVICE REQUEST message in the initialization UE message (INITIAL UE MESSAGE) and send to the LTE equipment of the core network.
The LTE equipment of the core network can be carried out authentication and security processes to called UE after receiving Trunk SERVICE REQUEST message.
In addition, be in the UE that monitors attitude, after receiving PAGING, need discharge group's resource immediately, no longer monitor group.
The 4th step: the LTE equipment of the core network continues to calling and called after the RRC of called UE connects foundation.
Particularly, the LTE equipment of the core network is after carrying out authentication and security processes and passing through to called UE, the RRC that can determine called UE connects and sets up, the RRC of called UE connect set up after, send PTP SETUP message to called UE, wherein can carry information such as main frame number; Called UE can the display of calling number; Called UE is called out to LTE equipment of the core network response PTP and is determined (PTP CALL CONFIRMED) message; Simultaneously, the LTE equipment of the core network sends the PTP calling to calling UE and carries out (PTP CALL PROCEDING) message, and expression is called out and continued.
The 5th step: set up the carrying of caller and called voice service.
Wherein, can specifically comprise for caller speech business carrying: after above-mentioned signaling procedure is finished, if the LTE equipment of the core network judges that according to the step of front called UE is to be in group to monitor attitude or Idle state, then the LTE equipment of the core network sends the initialization context to calling UE place eNB and sets up request (INITIAL CONTEXT SETUP REQUEST) message, with the S1 context of the calling UE place eNB that sets up point to point call and the assurance bit rate of speech business (Guaranteed Bit Rate, GBR) carrying.INITIAL CONTEXT SETUP REQUEST message is carried relevant newly-built E-RAB and is connected parameter, and newly-increased this E-RAB of parameter PTT Speaker indication eNB is an E-RAB who is used for a little exhaling; And carry NAS message: activate bearer context request (ACTIVATE BEARER CONTEXT REQUEST) message, be used to notify UE NAS layer to activate dedicated bearer, set up Uu mouth private resource after eNB receives, and initiate RRC reprovision process.
RRC reprovision process can comprise: calling UE place eNB sends safe mode command (Security Mode Command) message to calling UE; Calling UE is returned safe mode command to calling UE place eNB and is finished (Security Mode Command Complete) message; Calling UE place eNB sends the RRC connection to calling UE and reshuffles (RRC Connection Reconfiguration) message; RRC connection is wherein reshuffled and can be carried above-mentioned activation bearer context request (ACTIVATE BEARER CONTEXT REQUEST) message in (RRC Connection Reconfiguration) message; 1 layer, 2 layers and 3 layers of calling UE configurations (configuration L1/L2/L3); Calling UE connects to reshuffle to calling UE place eNB transmission RRC finishes (RRC Connection Reconfiguration Complete) message.
After the RRC reprovision was finished, calling UE sent NAS message: activate bearer context response (ACTIVATE BEARER CONTEXT RESPONSE) message and give the LTE equipment of the core network.Calling UE place eNB sends the initialization context to the LTE equipment of the core network and sets up response (INITIAL CONTEXT SETUP RESPONSE) message.
It is identical that principle is set up in called voice service carrying and caller speech business carrying, be equipment change with above-mentioned Calling Side be callee side equipment.
The 6th step: ring, answer and communication process.
Wherein, after caller and called speech business carrying are set up, called terminal ringing, and called UE sends PTP ring (PTP Alerting) message to the LTE equipment of the core network, afterwards, the LTE equipment of the core network is given calling UE with this PTP ring (PTP Alerting) forwards, prompting caller ring.
After called UE was selected to answer, called UE sent PTP to the LTE equipment of the core network and connects (PTP CONNECT) message, and afterwards, the LTE equipment of the core network sends the PTP connection to calling UE and determines (PTP CONNECT ACK) message, and the prompting caller is connected.
Afterwards, calling UE and called UE can be conversed.
Adopt said method to carry out point to point call and set up, directly provide speech business, in the network architecture, can not need to be provided with CS territory or IMS territory by the LTE equipment of the core network.
One of ordinary skill in the art will appreciate that: all or part of step that realizes above-mentioned each method embodiment can be finished by the relevant hardware of program command.Aforesaid program can be stored in the computer read/write memory medium.This program is carried out the step that comprises above-mentioned each method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
It should be noted that at last: above each embodiment is not intended to limit only in order to technical scheme of the present invention to be described; Although the present invention is had been described in detail with reference to aforementioned each embodiment, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps some or all of technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the scope of various embodiments of the present invention technical scheme.
Claims (10)
1. point-to-point call release method in the time-division Long Term Evolution TD-LTE digital cluster system is characterized in that, comprising:
Long Term Evolution LTE equipment sends point-to-point release message respectively to first user equipment (UE) that carries out point-to-point communication and the 2nd UE;
Described LTE equipment obtains respectively the point-to-point Release complete from a described UE and described the 2nd UE, according to described point-to-point Release complete a described UE and described the 2nd UE is carried out radio bearer resources and discharges.
2. method according to claim 1 is characterized in that, described LTE equipment also comprised before a UE who carries out point-to-point communication and the 2nd UE send point-to-point release message respectively:
Described LTE equipment receives the point-to-point disconnection connection message from a described UE, and described point-to-point disconnection connection message comprises the sign ID of evolved packet system EPS carrying;
Or described LTE equipment receives the point to point call release command from dispatching desk, and described point to point call release command comprises tagged word of locating a described UE or the tagged word of locating described the 2nd UE.
3. method according to claim 1 and 2 is characterized in that, describedly a described UE and described the 2nd UE are carried out radio bearer resources discharges and comprises:
Described LTE equipment sends evolution RAB E-RAB release command message respectively to an eNB and the 2nd eNB, and described E-RAB release command message comprises: deexcitation EPS bearer context request message;
A described eNB sends radio resource control RRC to a described UE and described the 2nd UE respectively with described the 2nd eNB and is connected reconfiguration message, and described RRC connects reconfiguration message and comprises: described deexcitation EPS bearer context request message;
A described UE and the 2nd UE return RRC to a described eNB and described the 2nd eNB respectively and are connected to reshuffle and finish message;
A described eNB and described the 2nd eNB return E-RAB to described LTE equipment and discharge response message;
A described UE and the 2nd UE accept message to a described eNB and described the 2nd eNB transmission deexcitation EPS bearer context respectively by the uplink information transmission;
A described eNB and described the 2nd eNB send described deexcitation EPS bearer context by up Non-Access Stratum NAS transmission to described LTE equipment and accept message.
4. point-to-point call release method in the time-division Long Term Evolution TD-LTE digital cluster system is characterized in that, comprising:
First user equipment (UE) receives the point-to-point release message from Long Term Evolution LTE equipment;
A described UE returns point-to-point Release complete to described LTE equipment so that described LTE equipment according to described point-to-point Release complete to a described UE with carry out radio bearer resources with the 2nd UE that a described UE carries out point-to-point communication and discharge.
5. method according to claim 4 is characterized in that, before the point-to-point release message of described UE reception from LTE equipment, also comprises:
A described UE sends point-to-point disconnection connection message to described LTE equipment, and described point-to-point disconnection connection message comprises the sign ID of evolved packet system EPS carrying, so that described LTE equipment sends point-to-point release message to a described UE.
6. a Long Term Evolution LTE equipment of the core network is characterized in that, comprising:
Transmitting element is used for sending point-to-point release message respectively to first user equipment (UE) that carries out point-to-point communication and the 2nd UE;
Receiving element is used to obtain respectively the point-to-point Release complete from a described UE and described the 2nd UE;
The resource releasing unit is used for according to described point-to-point Release complete a described UE and described the 2nd UE being carried out radio bearer resources release.
7. equipment according to claim 6 is characterized in that,
Described receiving element also is used to receive the point-to-point disconnection connection message from a described UE, and described point-to-point disconnection connection message comprises the sign ID of evolved packet system EPS carrying; Described transmitting element specifically is used for sending point-to-point release message respectively to first user equipment (UE) that carries out point-to-point communication and the 2nd UE after described receiving element receives described point-to-point disconnection connection message;
Or described equipment also comprises: the schedule information acquiring unit, be used to receive point to point call release command from dispatching desk, and described point to point call release command comprises tagged word of locating a described UE or the tagged word of locating described the 2nd UE; Described transmitting element specifically is used for sending point-to-point release message respectively to first user equipment (UE) that carries out point-to-point communication and the 2nd UE after described schedule information acquiring unit receives described point to point call release command.
8. according to claim 6 or 7 described equipment, it is characterized in that described resource releasing unit comprises:
Release command sends subelement, be used for sending the E-RAB release command message respectively to an eNB and the 2nd eNB, described E-RAB release command message comprises: deexcitation evolved packet system EPS bearer context request message, so that sending radio resource control RRC to a described UE and described the 2nd UE respectively with described the 2nd eNB, a described eNB is connected reconfiguration message, described RRC connects reconfiguration message and comprises: described deexcitation EPS bearer context request message, a described eNB and described the 2nd eNB receive RRC from a described UE and the 2nd UE respectively and are connected to reshuffle and finish message and receive subelement and return E-RAB and discharge response message to discharging response, and a described eNB and described the 2nd eNB receive deexcitation EPS bearer context that a UE and the 2nd UE send by the uplink information transmission respectively and accept message and receive subelement by up Non-Access Stratum NAS transmission to described release response to send described deexcitation EPS bearer context and accept message;
Discharge response and receive subelement, be used to receive E-RAB from a described eNB and described the 2nd eNB and discharge a response message and a described eNB and described the 2nd eNB and accept message by the described deexcitation EPS bearer context that up Non-Access Stratum NAS transmission sends.
9. a user equipment (UE) is characterized in that, comprising:
Receiving element is used to receive the point-to-point release message from Long Term Evolution LTE equipment;
Transmitting element is used for returning point-to-point Release complete to described LTE equipment so that described LTE equipment according to described point-to-point Release complete to described UE with carry out the Radio Resource carrying with UE that described UE carries out point-to-point communication and discharge.
10. UE according to claim 9 is characterized in that,
Described transmitting element also is used for sending point-to-point disconnection connection message to described LTE equipment, and described point-to-point disconnection connection message comprises the sign ID of evolved packet system EPS carrying, so that described LTE equipment sends described point-to-point release message to described UE.
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| CN103220823B (en) | 2016-06-29 |
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