CN107113705A

CN107113705A - A kind of voice communication method and device

Info

Publication number: CN107113705A
Application number: CN201580072121.XA
Authority: CN
Inventors: 崇卫微; 吴晓波
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2015-09-30
Filing date: 2015-09-30
Publication date: 2017-08-29
Anticipated expiration: 2035-09-30
Also published as: WO2017054190A1; CN107113705B

Abstract

The present invention provides a kind of voice communication method and device.Mobility management apparatus determines that user equipment (UE) is first kind UE in the present invention；The first kind UE, which refers to, is roamed into visited Public Land mobile network (VPLMN), and needs to carry out the UE of Long Term Evolution (LTE) speech business (VoLTE) using ownership route (HR) communication mechanism based on S8 interfaces；The mobility management apparatus sends the first configured information to the UE, and first configured information is used to notify the UE VoLTE business to be not supported.If not supporting to perform Lawful Interception to the VoLTE audio calls that the UE is initiated by present invention VPLMN, VPLMN only provides the UE circuit switching (CS) speech business and does not provide VoLTE speech businesses, it is ensured that can perform Lawful Interception to the audio call of the UE in CS domains.

Description

A kind of voice communication method and device

Technical field

The present invention relates to field of communication technology more particularly to a kind of voice communication methods and device.

Background technique

In order to guarantee the safety of communication network, Lawful Interception is carried out to the voice communication of roaming service customer in visited Public Land mobile network (Visited Public Land Mobile Network, VPLMN), is a kind of more commonly used technological means.

At present, long term evolution (Long Term Evolution is based in order to develop and improve, LTE voice (Voice over LTE), VoLTE) technology, industry can use S8HR roaming communication framework, and S8HR refers to that the ownership through S8 interface routes (Home Routed, HR), S8 interface refers to the interface between Service Gateway (Serving Gateway, SGW) and packet data gateway (Packet data network Gateway, P-GW).Under S8HR framework, the VoLTE call session of roaming service customer's triggering, by VPLMN evolved packet system (Evolved Packet System, EPS) network is as carrying access belonging area public land mobile network (Home Public Land Mobile Network, HPLMN IP multimedia subsystem (IP Multimedia Subsystem), IMS) core net, and the signaling and session content called is IPsec (IP Security) encryption between user and IMS network, it is ciphertext to entire VPLMN EPS network, the Vo initiated roaming service customer is realized in the VPLMN under S8HR framework LTE calling carries out Lawful Interception, and difficulty is bigger.

Summary of the invention

The embodiment of the invention provides a kind of voice communication method and devices, to simplify the process for carrying out Lawful Interception under S8HR scene to UE.

In a first aspect, providing a kind of voice communication method, comprising:

Mobility management apparatus determines that user equipment (UE) is first kind UE；

The first kind UE, which refers to, is roamed into visited Public Land mobile network VPLMN, and needs to carry out the UE of long term evolution LTE voice service VoLTE using the ownership routing HR communication mechanism based on S8 interface；

The mobility management apparatus sends the first instruction information to the UE, and the first instruction information is for notifying that the UE VoLTE business is not supported.

With reference to first aspect, in the first implementation, the method also includes:

To the home subscriber server HSS of the UE, perhaps home location register HLR sends the second indication information second indication information for notifying the HSS or the HLR VoLTE business that cannot be supported to the mobility management apparatus.

With reference to first aspect or the first implementation of first aspect, in the second implementation, before the mobility management apparatus sends the first instruction information to the UE further include:

The mobility management apparatus determines that the VPLMN does not support to carry out Lawful Interception to the VoLTE business of the first kind UE.

With reference to first aspect or any of the above-described kind of implementation of first aspect, in the third implementation, the mobility management apparatus is sent to the UE before the first instruction information further include:

The mobility management apparatus determines that the UE needs are lawfully intercepted.

The third implementation with reference to first aspect, in the 4th kind of implementation, the mobility management apparatus determines that the UE needs are lawfully intercepted, comprising:

The mobility management apparatus obtains the identification information of the UE, and the identification information of the UE is sent to Lawful Interception control equipment or Lawful Interception execution equipment；

It is that the judging result judging result of Lawful Interception object controls equipment for the Lawful Interception or Lawful Interception executes equipment and determines according to the identification information of the UE that the mobility management apparatus, which receives the Lawful Interception control equipment UE that perhaps Lawful Interception executes equipment transmission,；

The mobility management apparatus determines that the UE needs are lawfully intercepted according to the judging result.

The 4th kind of implementation with reference to first aspect, in the 5th kind of implementation, the mobility management apparatus determines that the UE needs are lawfully intercepted, comprising:

The mobility management apparatus obtains the identification information of the UE；

The mobility management apparatus judges whether the identification information of the UE is included in the identification information set of Lawful Interception object, and the identification information collection of the Lawful Interception object is combined into Lawful Interception control equipment or Lawful Interception executes what equipment was sent；

If the identification information of the UE is included in the identification information set of Lawful Interception object, the mobility management apparatus determines that the UE needs are lawfully intercepted.

With reference to first aspect or first aspect it is above-mentioned the first to any implementation in the 5th kind, in the 6th kind of implementation, the mobility management apparatus sends the first instruction information to the UE, comprising:

If the mobility management apparatus determines that the UE carries out evolved packet system EPS attachment Attach process or tracing section updating TAU process,

The mobility management apparatus receives in Attach Accept message in the attachment sent to the UE, carries the first instruction information；Alternatively,

The mobility management apparatus receives in TAU Accept message in the tracing section updating sent to the UE, carries the first instruction information.

With reference to first aspect or first aspect it is above-mentioned the first to any implementation in the 5th kind, in the 7th kind of implementation, the mobility management apparatus sends the first instruction information to the UE, comprising:

If the mobility management apparatus determines that the UE has completed evolved packet system EPS attachment Attach process or tracing section updating TAU process,

The mobility management apparatus sends attachment removal to the UE and requests Detach Request message, and the attachment removal request message re-initiates attaching process or TAU process for triggering the UE；

The mobility management apparatus receives in Attach Accept message in attachment or tracing section updating receives in TAU Accept message, carries the first instruction information.

The 7th kind of implementation with reference to first aspect, in the 8th kind of implementation, the mobility management apparatus is sent to the UE before attachment removal request Detach Request message, further includes:

The mobility management apparatus determines that the VoLTE service conversation of the UE terminates.

With reference to first aspect or any of the above-described kind of implementation of first aspect, in the 9th kind of implementation, the first instruction information are as follows:

IP multimedia subsystem IMS voice based on packet switch PS session is not supported IMS voice over PS session not supported.

The first implementation with reference to first aspect, in the tenth kind of implementation, the second indication information are as follows:

IP multimedia subsystem IMS voice based on packet switch PS session is not supported homogeneous support of IMS voice over PS sessions not supported.

8th kind of implementation of the 7th kind of implementation or first aspect with reference to first aspect, in a kind of the tenth implementation, it include attachment removal type cell in the Detach Request message, the attachment removal type cell is international mobile subscriber identity attachment removal IMSI Detach.

With reference to first aspect, in the 12nd kind of implementation, the mobility management apparatus determines that UE is first kind UE, comprising:

The mobility management apparatus is determined by the instruction information that the UE is first kind UE in the VPLMN that is used to indicate for including in subscription data；Or

The mobility management apparatus is not by including that visit address is allowed to indicate that information is determined for the VPLMN in subscription data；Or

The mobility management apparatus passes through the roaming agreement signed between VPLMN and Home Public Land Mobile Network, HPLMN HPLMN and determines.

5th kind of implementation of the 4th kind of implementation or first aspect with reference to first aspect, in the 13rd kind of implementation, the Lawful Interception control equipment includes management function entity A DMF or listening center LEA；

The legal execution equipment includes home subscriber server HSS, Service Gateway SGW or public data network gateway PGW.

Second aspect provides a kind of voice communication assembly, comprising:

Processing unit, for determining that user equipment (UE) is first kind UE；

Transmission unit, for sending the first instruction information to the UE, the first instruction information is for notifying that the UE VoLTE business is not supported.

With reference to first aspect, in the first implementation, the transmission unit, is also used to:

To the home subscriber server HSS of the UE, perhaps home location register HLR sends the second indication information second indication information for notifying the HSS or the HLR VoLTE business that cannot be supported.

With reference to first aspect or the first implementation of first aspect, in the second implementation, the processing unit is also used to:

Before the transmission unit sends the first instruction information to the UE, determine that the VPLMN does not support to carry out Lawful Interception to the VoLTE business of the first kind UE.

With reference to first aspect or any of the above-described kind of implementation of first aspect, in the third implementation, the processing unit is also used to:

Before the transmission unit sends the first instruction information to the UE, determine that the UE needs are lawfully intercepted.

The third implementation with reference to first aspect, in the 4th kind of implementation, the processing unit, specifically for determining that the UE needs are lawfully intercepted as follows:

The identification information of the UE is obtained, and the identification information of the UE is sent to Lawful Interception control equipment or Lawful Interception execution equipment；

Receiving the Lawful Interception control equipment UE that perhaps Lawful Interception executes equipment transmission is that the judging result judging result of Lawful Interception object controls equipment for the Lawful Interception or Lawful Interception executes equipment and determines according to the identification information of the UE；

According to the judging result, determine that the UE needs are lawfully intercepted.

The 4th kind of implementation with reference to first aspect, in the 5th kind of implementation, the processing unit, specifically for determining that the UE needs are lawfully intercepted as follows:

Obtain the identification information of the UE；

Judge whether the identification information of the UE is included in the identification information set of Lawful Interception object, the identification information collection of the Lawful Interception object is combined into Lawful Interception control equipment or Lawful Interception executes what equipment was sent；

If the identification information of the UE is included in the identification information set of Lawful Interception object, it is determined that the UE needs are lawfully intercepted.

With reference to first aspect or first aspect it is above-mentioned the first to any implementation in the 5th kind, in the 6th kind of implementation, the processing unit, is also used to determine whether the UE is in evolved packet system EPS attachment Attach process or tracing section updating TAU process；

The transmission unit is specifically used for sending the first instruction information to the UE as follows:

If the processing unit determines that the UE is in EPS Attach process or TAU process, receive in Attach Accept message in the attachment sent to the UE, carries the first instruction information；Alternatively, receiving in TAU Accept message in the tracing section updating sent to the UE, the first instruction information is carried.

With reference to first aspect or first aspect it is above-mentioned the first to any implementation in the 5th kind, in the 7th kind of implementation, the processing unit, is also used to determine whether the UE is in evolved packet system EPS attachment Attach process or tracing section updating TAU process；

If the processing unit determines that the UE has completed EPS Attach process or TAU process, attachment removal is sent to the UE and requests Detach Request message, the attachment removal request message re-initiates attaching process or TAU process for triggering the UE；

Receive in Attach Accept message in attachment or tracing section updating receives in TAU Accept message, carries the first instruction information.

The 7th kind of implementation with reference to first aspect, in the 8th kind of implementation, the processing unit is also used to:

Before the transmission unit sends attachment removal request Detach Request message to the UE, determine that the VoLTE service conversation of the UE terminates.

With reference to first aspect, in the 12nd kind of implementation, the processing unit is specifically used for determining that UE is first kind UE as follows:

It is determined by the instruction information that the UE is first kind UE in the VPLMN that is used to indicate for including in subscription data；Or

It include that visit address is allowed to indicate that information determines by being directed to the VPLMN not in subscription data；Or

It is determined by the roaming agreement signed between VPLMN and Home Public Land Mobile Network, HPLMN HPLMN.

5th kind of implementation of the 4th kind of implementation or first aspect with reference to first aspect, in the 14th kind of implementation, the voice communication assembly is mobility management entity MME.

Voice communication method and device provided in an embodiment of the present invention, MME determine that UE is to be roamed into VPLMN, and need to carry out the UE of VoLTE using the HR communication mechanism based on S8 interface.The MME sends the first instruction information to the UE, to notify VPLMN described in the UE not support VoLTE business, so that the UE caller carries out voice service using CSFB, if therefore VPLMN does not support to execute Lawful Interception to the VoLTE audio call that the UE is initiated, VPLMN only provides CS voice service to the UE and does not provide VoLTE voice service, guarantees to execute Lawful Interception in audio call of the domain CS to the UE.

Detailed description of the invention

Fig. 1 is the S8HR communication construction of voice communication method provided in an embodiment of the present invention application；

Fig. 2A is the first voice communication method implementation flow chart provided in an embodiment of the present invention；

Fig. 2 B is the second voice communication method implementation flow chart provided in an embodiment of the present invention；

Fig. 3 is third voice communication method implementation flow chart provided in an embodiment of the present invention；

Fig. 4 is the 4th voice communication method implementation flow chart provided in an embodiment of the present invention；

Fig. 5 is the 5th voice communication method implementation flow chart provided in an embodiment of the present invention；

Fig. 6 is the composition schematic diagram of voice communication assembly provided in an embodiment of the present invention；

Fig. 7 is another composition schematic diagram of voice communication assembly provided in an embodiment of the present invention.

Specific embodiment

To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be describe below in further detail with reference to the accompanying drawings.

" multiple " refer to two or more in the embodiment of the present invention."and/or" describes the incidence relation of affiliated partner, indicates may exist three kinds of relationships, for example, A and/or B, can indicate: individualism A exists simultaneously A and B, these three situations of individualism B.Character "/" typicallys represent the relationship that forward-backward correlation object is a kind of "or".

Voice communication method provided in an embodiment of the present invention can be applied to S8HR roaming communication framework shown in FIG. 1, under this framework, belong to HPLMN for the UE all IMS network equipment for proposing VoLTE business.UE is carried out before IMS registration, an IMS access point name (Access Point Name can first be established, APN packet data network (Packet Data Network), PDN it) connects, the corresponding packet data network gateway (PDN Gateway, PGW) of the PDN connection also belongs to HPLMN.In Fig. 1, the interface between Service Gateway (Serving Gateway, SGW) and PGW is S8 interface.User equipment (User Equipment, UE) initiates register flow path in VPLMN EPS network, is registered in the domain EPS and the domain circuit switching (Circuit Switching, CS) of VPLMN.The mobile management process and session management process of mobility management entity (Mobility Management Entity, MME) processing UE in VPLMN.Home subscriber server (Home Subscriber Server, HSS), Service Gateway (Serving Gateway,) and packet data network gateway (PDN Gateway SGW,) etc. PGW it can receive the solicited message for carrying out Lawful Interception to UE that MME or management function entity (Administration function, ADMF) are sent, need monitored UE to determine.

At present, UE then can carry out voice communication using CSFB mode, if UE carries out voice communication using CSFB mode if it is determined that network side does not support VoLTE business, then UE eventually carries out audio call in the domain CS, therefore network side can carry out Lawful Interception to the voice communication of UE in the domain CS.

The embodiment of the present invention provides a kind of voice communication method, the voice communication of UE support two kinds of communication standards of VoLTE and CSFB, the mobility management apparatus of VPLMN determines that UE is to be roamed into UE, and in the case where needing to carry out the UE of VoLTE using the HR communication mechanism based on S8 interface, mobility management apparatus sends instruction information to the UE, notify that UE VoLTE business is not supported by the instruction information, so that the UE caller carries out voice service using CSFB, if therefore the network VPLMN that UE is roamed into does not support to execute Lawful Interception to the VoLTE audio call that the UE is initiated, VPLMN only provides CS voice service to the UE and does not provide VoLTE voice service, guarantee to hold in audio call of the domain CS to the UE Row Lawful Interception.Wherein, mobility management apparatus specifically can be mobility management entity MME.

Fig. 2A show a kind of implementation flow chart of voice communication method provided in an embodiment of the present invention, as shown in Figure 2 A, this method comprises:

S101: mobility management apparatus determines that UE is first kind UE.

Mobility management apparatus in the embodiment of the present invention can be MME etc. being capable of mobile management (Mobility Management to UE, MM) the network equipment that process and session management (Session Management, SM) process are handled.

First kind UE involved in the embodiment of the present invention can be the UE for being roamed into VPLMN, and needing to carry out VoLTE using the HR communication mechanism based on S8 interface.

First kind UE can be S8HR UE in the embodiment of the present invention, does not regard it as certainly and is limited.

UE involved in the embodiment of the present invention can be the UE for roaming into visited place VPLMN, and UE sends registration information to the mobility management apparatus of the VPLMN, initiates register flow path in VPLMN EPS network.The registration information that UE is sent can be attach request (Attach Request) message Or tracing section updating requests (TAU Request) message.

In the embodiment of the present invention, the UE supports the voice communication of two kinds of communication mechanisms of VoLTE and CSFB, and it would generally be by the type of attachment (attachtype) or EPS updating type (EPS update type) cell in the Attach Request or TAU request message, it is set as joint evolved packet system/international mobile subscriber identity attachment (combined EPS/IMSI attach), or joint tracking area/location area updating (combined TA/LA update), the attach type or EPS update type cell are for informing UE request in the domain EPS and the domain CS while registering.

In the embodiment of the present invention, when mobility management apparatus determine need to UE carry out Lawful Interception in the case where, judgement need whether the UE for carrying out Lawful Interception is first kind UE, determine the UE be the first kind UE in the case where execute S102 the step of.

In the embodiment of the present invention mobility management apparatus can UE initiate register flow path during carry out UE whether the judgement for being first kind UE, certainly can also UE carry out EPS attachment, TAU during, not do any judgement, smoothly complete registration and execute VoLTE；When mobility management apparatus receives the instruction information for needing to be monitored to the UE, just to UE whether the judgement for being first kind UE.

It should be noted that first kind UE described in the embodiment of the present invention, which refers to, is roamed into VPLMN, and the UE of VoLTE business is carried out using S8HR communication mechanism.First kind UE described in the embodiment of the present invention is alternatively referred to as S8HR VoLTE roaming UE.

S102: mobility management apparatus sends the first instruction information to the UE, and the first instruction information is for notifying the UE VoLTE business not supported, select the UE when initiating caller voice service in a manner of CSFB.

In the embodiment of the present invention, the first instruction information, which specifically can be, to be included in attachment receiving (Attach Accept) message or tracing section updating receiving (TAU Accept) message.

Further, the first instruction information described in the embodiment of the present invention can be not supported " IMS voice over PS session not supported " for the IMS voice based on packet switch (Packet Switching, PS) session.

In the embodiment of the present invention, after the first kind UE receives attach Accept or TAU the Accept message of mobility management apparatus transmission, according to IMS voice over PS session not therein The instruction information of supported, know that current VoLTE business is not supported, therefore when the subsequent initiation voice service request of the UE, caller domain can be chosen to the domain CS, caller voice service is carried out using CSFB communication mechanism, if therefore VPLMN does not support the VoLTE audio call execution Lawful Interception initiated the UE, VPLMN only to provide CS voice service to the UE and do not provide VoLTE voice service, guarantees to execute Lawful Interception in audio call of the domain CS to the UE.

The embodiment of the present invention may also include the steps of, as shown in Figure 2 B:

S103, the mobility management apparatus also need HSS/ home location register (the Home Location Register belonged to the UE, HLR the second indication information that VoLTE business cannot be supported) is sent, so that the HSS shows that VoLTE business is not supported to called domain optional equipment, so that the called domain optional equipment selection is in the triggering of the domain CS to the called flow of the UE.

Specifically, mobility management apparatus sends the second not supported instruction message of VoLTE voice service and can be to be included in and updates in location message request (update location request) message to HSS/HLR.

The second instruction message specifically can be the IP multimedia subsystem IMS voice based on packet switch PS session and be not supported (homogeneous support of IMS voice over PS sessions:not supported) in the embodiment of the present invention, this instruction information is for illustrating that all tracking areas under the mobility management apparatus do not support the IMS voice based on PS session.

After HSS described in the embodiment of the present invention receives the update location request message that the mobility management apparatus is sent, according to " homogeneous support of IMS voice over PS sessions:not supported " therein, know that the tracking area that the UE is currently located under MME cannot uniformly support VoLTE voice service, i.e., is not that mobile management region all under MME can support VoLTE.The HSS shows that VoLTE voice service is not supported to called domain optional equipment, so that the called domain optional equipment selection is in the triggering of the domain CS to the called flow of the UE.Because the UE is currently in the EPS network of VPLMN, the called CSFB process to the UE is eventually triggered.Through this, the embodiment of the present invention provides CSFB voice service to the UE under S8HR scene, and then VPLMN can be made to realize the voice service that UE described in Lawful Interception is initiated in the domain CS.

It should be noted that carrying out Lawful Interception to the UE that needs are monitored in the domain CS in the embodiment of the present invention Existing monitor method can be used, the embodiment of the present invention is without limitation.

The voice communication method that above-described embodiment is related to will be described in detail below the embodiment of the present invention.

Mobility management apparatus described in the embodiment of the present invention judges whether the UE is that first kind UE can be used under type:

A: the mobility management apparatus is determined by the instruction information that the UE is first kind UE in the VPLMN that is used to indicate for including in subscription data.

In the embodiment of the present invention, in the subscription data of the UE may containing be specifically used to indicate in the VPLMN whether the instruction information for being first kind UE, mobility management apparatus can judge whether the UE is first kind UE according to the instruction information.

B: mobility management apparatus described in the embodiment of the present invention can include that visit address allows to indicate that information determines that the UE is first kind UE in the VPLMN by being directed to the VPLMN not in the subscription data of the UE.

Typically, if illustrating that access zone network address allows (VPLMN Address Allowed containing instruction information in the subscription data of UE, VAA), then the UE generally uses local break-out (Local Breakout, LBO PDN) is accessed by local visited network, and it is IMS APN PDN that the present invention is corresponding.Therefore, in embodiments of the present invention, MME can judge that UE is the UE, i.e. first kind UE for needing to carry out VoLTE using S8HR communication mechanism using judging to be free of VAA instruction information in subscription data.C: the mobility management apparatus passes through the S8HR roaming agreement signed between VPLMN and ownership place public land mobile network (Home Public Land Mobile Network, HPLMN) and determines.

Mobility management apparatus may determine that in the related roaming agreement between the HPLMN and VPLMN of the UE in the embodiment of the present invention, whether requirement using S8HR communication mechanism provides VoLTE business for the UE, if it is desired to provide VoLTE business using S8HR communication mechanism for the UE, then judge that the UE is first kind UE.

Certainly, in related roaming agreement in the embodiment of the present invention between the HPLMN and VPLMN for judging the UE, before whether requirement provides VoLTE business using S8HR communication mechanism for the UE, the mobility management apparatus also needs to judge the corresponding HPLMN ID of the UE, the HPLMN ID can be specifically extracted from the IMSI of UE, for how to judge that existing side can be used in the HPLMN ID Formula is judged that the embodiment of the present invention is without limitation.

Mobility management apparatus described in the embodiment of the present invention sends the first instruction information to the UE, can be used such as under type:

The mobility management apparatus judges whether the UE is in VPLMN EPS attachment (attach) process or TAU process.If the mobility management apparatus determines that the UE is in VPLMN EPS attach process or TAU process in the embodiment of the present invention, the mobility management apparatus carries the first instruction information in the EPS Attach Accept message sent to the UE；Alternatively, the mobility management apparatus carries the first instruction information in the TAU Accept message sent to the UE.

If the mobility management apparatus determines that the UE completes EPS attach process or TAU process in the VPLMN in the embodiment of the present invention, then the mobility management apparatus sends attachment removal to the UE and requests (detach request) message, and the detach request message re-initiates attach process or TAU process for triggering the UE in the VPLMN.Mobility management apparatus described in the embodiment of the present invention can carry the first instruction information during the attach process or TAU that the UE is re-initiated, in Attach Accept message or in TAU Accept message.

Optionally, if the mobility management apparatus determines that the UE completes EPS attach process or TAU process in the VPLMN and the UE is carrying out VoLTE voice service, to guarantee that the VoLTE voice service of the UE is not disrupted, if the mobility management apparatus can be in the case where determining that the VoLTE service conversation of the UE terminates, Xiang Suoshu UE sends the detach request message.

Optionally, mobility management apparatus described in the embodiment of the present invention may also include the steps of: before sending the first instruction information to the UE

S102a: the mobility management apparatus determines that the VPLMN does not support to carry out Lawful Interception to the first kind UE.In the embodiment of the present invention, the mobility management apparatus can execute Lawful Interception to the current VPLMN VoLTE audio call that whether can be initiated first kind UE and judge, to ensure in the case where VPLMN not can be carried out Lawful Interception, Lawful Interception is realized to the audio call that the UE is initiated in the domain CS.

It can judge whether current VPLMN can execute Lawful Interception to first kind UE in the embodiment of the present invention by the internal configuration information of mobility management apparatus, for example, when VPLMN is not special The Lawful Interception function under S8HR framework is disposed, then can determine that current VPLMN does not support to execute Lawful Interception to the VoLTE audio call that first kind UE is initiated；Or VPLMN deploys the Lawful Interception function under S8HR framework, but transmission of the signaling and session content called between user and IMS network is encryption to VPLMN, then can determine that current VPLMN does not support to execute Lawful Interception to first kind UE.

The embodiment of the present invention includes the implementation method flow charts of above-mentioned S102a step, see shown in Fig. 3.It should be noted that execution step shown in Fig. 3 of the embodiment of the present invention is only schematically illustrated, does not limit and specific execute sequence.Further, in the embodiment of the present invention on the basis of Fig. 2A, Fig. 2 B or voice communication method shown in Fig. 3, before the mobility management apparatus sends instruction information to the UE, it also can determine whether to determine that the UE needs are lawfully intercepted, so as to which the user of Lawful Interception is needed to carry out calling and called voice service using CSFB process, and make the user for not needing Lawful Interception, VoLTE business can be carried out in VPLMN, do not influenced by Lawful Interception.

The embodiment of the present invention is to include the following steps to be illustrated on the basis of shown in Fig. 3, as shown in figure 4, may also include the steps of: before the mobility management apparatus sends instruction information to the UE

S102b: the mobility management apparatus determines that the UE needs are lawfully intercepted.

It should be noted that execution step shown in Fig. 4 of the embodiment of the present invention is only schematically illustrated, does not limit and specific execute sequence.

In the embodiment of the present invention, the mobility management apparatus determines whether the UE needs to be lawfully intercepted and can be used such as under type:

First way

Mobility management apparatus obtains the identification information of the UE, and the identification information of the UE is sent to Lawful Interception control equipment or Lawful Interception execution equipment.After Lawful Interception control equipment or Lawful Interception execute the identification information for the UE that equipment receives mobility management apparatus transmission, judge whether the UE needs to be monitored according to the identification information of the UE, and judging result is sent to mobility management apparatus, after mobility management apparatus receives the judging result that the UE that the Lawful Interception control equipment or Lawful Interception execution equipment are sent is Lawful Interception object, according to the judging result, determine UE needs are lawfully intercepted.

The identification information of UE for example can be IMSI, mobile device international identity code (International Mobile Equipment Identity, IMEI) etc. in the embodiment of the present invention.The judging result is that the Lawful Interception controls equipment or Lawful Interception executes equipment and determines according to the identification information of the UE.

The second way

Mobility management apparatus obtains the identification information of the UE, judge whether the identification information of the UE is included in the identification information set of Lawful Interception object, the identification information collection of the Lawful Interception object is combined into Lawful Interception control equipment or Lawful Interception executes equipment and is sent to mobility management apparatus, and pre-saved by mobility management apparatus.If the identification information of the UE is included in the identification information set of Lawful Interception object in the embodiment of the present invention, it can determine that the UE needs are lawfully intercepted.

It should be noted that, in the embodiment of the present invention during the above two mode of specific implementation determines whether UE needs to be lawfully intercepted, if mobility management apparatus itself is executed as Lawful Interception and can directly be communicated by network interface between equipment, and Lawful Interception control equipment；If mobility management apparatus does not have Lawful Interception function, equipment can also be executed by Lawful Interception and is communicated indirectly with Lawful Interception control equipment, or directly executes equipment from Lawful Interception and obtains necessary information.It should be noted that the present embodiments relate to Lawful Interception control equipment for example can be ADMF, listening center (Law Enforcement Agency, LEA) etc.；Lawful Interception, which executes equipment, can be HSS, SGW or PGW etc..In the embodiment of the present invention, when mobility management apparatus is communicated by the Lawful Interceptions such as SGW, PGW or HSS execution equipment and Lawful Interception control equipment, mobility management apparatus can actively or passively obtain whether the UE needs monitored information by network equipments such as SGW, PGW or HSS.The network equipments such as SGW, PGW and HSS need to enhance function at this time, and eavesdropping target's information from Lawful Interception control equipment is actively transmitted to mobility management apparatus；Or when receive mobility management apparatus request judge whether the UE is the request message of Lawful Interception object when, described SGW, PGW or HSS can directly judge, or judge whether the UE is Lawful Interception object indirectly by Lawful Interception control equipment, and judging result is sent to mobility management apparatus.

If the mobility management apparatus determines that the UE does not need currently to carry out Lawful Interception in the embodiment of the present invention, the notification message that current VPLMN supports VoLTE voice service can be then sent to UE, make UE that IMS network is chosen in caller domain, and carries out VoLTE caller voice service.Mobility management apparatus sends current VPLMN to UE and the notification message of VoLTE voice service is supported to can be included in attach Accept or TAU Accept message, specifically can be " IMS voice over PS sessions supported ".In addition, the mobility management apparatus also needs the HSS/HLR belonged to the UE to send the notification message that current VPLMN supports VoLTE voice service, so that the called domain voice flow to the UE can be selected to IMS network, and VoLTE called voice service is carried out.Mobility management apparatus supports the notification message of VoLTE voice service can be to be included in update in location message request (update location request) message to the current VPLMN that HSS/HLR is sent, and specifically can be " homogeneous support of IMS voice over PS sessions supported ".

A kind of typical application scenarios are that the UE being lawfully intercepted is needed to carry out VoLTE voice service, such as mobility management apparatus receives Lawful Interception control equipment or the notification information of Lawful Interception execution equipment informs that the UE needs are lawfully intercepted, or mobility management apparatus actively gets the UE to Lawful Interception control equipment due to needs and needs to be monitored, or equipment is executed by other Lawful Interceptions, such as SGW, PGW and HSS actively or passively get the UE needs and are lawfully intercepted.

The case where embodiment of the present invention is for needing the UE being lawfully intercepted carrying out VoLTE voice service, the mobility management apparatus can send detach request message to the UE, attachment removal process is carried out to trigger UE, and it triggers the UE and re-initiates attach process or TAU process, during the attach process or TAU that the UE is re-initiated, in Attach Accept message or in TAU Accept message, carry the instruction information that the notice current VPLMN of UE does not support VoLTE voice service, make UE that triggering CSFB process be selected to carry out voice service when initiating caller, and then realize Lawful Interception.Specifically, the detach type cell in the detach request message can be set to request attachment (re-attach required) or IMSI attachment removal (IMSI detach) again.The UE can trigger combine EPS/IMSI attach process and combine the domain EPS and the domain CS for being attached to VPLMN again after receiving the detach request comprising re-attach required.If after the UE receives the detach request comprising IMSI detach, combine TA/LA update with IMSI attach can be triggered Process executes TAU process in the domain VPLMN EPS and is re-attached to the domain CS.Preferably detach type cell can be set to " IMSI detach " in the embodiment of the present invention, to reduce expense.The mobility management apparatus is after the completion of combine EPS/IMSI attach or combine the TA/LA update with IMSI attach process, attach Accept/TAU Accept message is sent to the UE, includes " IMS voice over PS session not supported " instruction information in the message.

After the first kind UE receives the attach Accept/TAU Accept message that mobility management apparatus is sent, know that VoLTE voice service is not supported according to the instruction information of IMS voice over PS session not supported therein, then when subsequent initiation calls, choose the domain CS in caller domain, voice service is carried out using CSFB, so that VPLMN can realize that the caller voice service to the UE carries out Lawful Interception in the domain CS.

Optionally, during the attach process or TAU that the UE is re-initiated, the mobility management apparatus, which sends to update to the HSS/HLR that the UE belongs to, carries the not supported instruction information of notice VoLTE voice service in location request message (Update location request), when so that the UE is as callee, HSS/HLR described in called domain optional equipment inquiry, the HSS/HLR informs that the called domain optional equipment VoLTE voice service is not supported, so that called preferred equipment selects the domain CS, voice service is carried out to trigger called CSFB process to the UE, and then realize Lawful Interception.Specifically, the instruction information can be homogeneous support of IMS voice over PS sessions:not supported.

Preferably, the problems such as to avoid poor user experience or monitored user's perception, if the UE is carrying out VoLTE voice service in the embodiment of the present invention, after the VoLTE voice service that then mobility management apparatus may wait for the UE terminates, execute above-mentioned attachment removal process, specific implementation process is seen shown in Fig. 5, as shown in Figure 5, comprising:

S201:UE initiates EPS attach request or TAU request in VPLMN, carries out EPS registration.

S202: compared with techniqueflow, after mobility management apparatus judges that the UE meets existing EPS registration requirement, Xiang Suoshu UE sends the notification message for supporting VoLTE voice service, so that UE is normally carried out caller VoLTE voice service.In addition, the HSS/HLR that mobility management apparatus also belongs to the UE sends the notification message for supporting VoLTE voice service, so that UE is normally carried out called VoLTE Voice service.

S203: mobility management apparatus knows that needs carry out Lawful Interception to the UE.

Specifically know that mode is shown in S102b, details are not described herein again.

S204: mobility management apparatus determines that the UE is first kind UE.

S205: mobility management apparatus determines that current VPLMN does not support to carry out Lawful Interception to the first kind UE.

It should be noted that the embodiment of the present invention, which does not limit, executes sequence between S203,204,205.

S206: mobility management apparatus determines that the VoLTE service conversation of the UE terminates, attachment removal request is sent to the UE, and carries the message for re-initiating attach process or TAU process for triggering the UE in the VPLMN in the attachment removal request message.

S207: the mobility management apparatus sends the first instruction information to the UE, and the first instruction information is for notifying that the UE VoLTE business is not supported, so that UE initiates caller voice service using CSFB.

S208: further, the mobility management apparatus sends second indication information to HSS/HLR, and the second indication information is not supported for notifying the HSS or the HLR VoLTE business, so that the domain CS is chosen in the called domain of the UE.

In the embodiment of the present invention, VoLTE voice service can be first provided for monitored first kind UE is not originally needed, when needing to carry out Lawful Interception, after current VoLTE voice service, carry out CSFB voice service, so that UE enters the domain CS and initiates to be lawfully intercepted when calling progress calling and called voice service again, and the VoLTE voice service of other UE is unaffected.

The voice communication method provided based on the above embodiment, the embodiment of the present invention provides a kind of voice communication assembly 100, Fig. 6 show the composition schematic diagram of voice communication assembly 100 provided in an embodiment of the present invention, as shown in Figure 6, voice communication assembly 100 includes processing unit 101 and transmission unit 102, in which:

Processing unit 101, for determining that UE is first kind UE.

Wherein, the first kind UE, which refers to, is roamed into VPLMN, and needs to carry out the UE of VoLTE using the ownership routing HR communication mechanism based on S8 interface.

Transmission unit 102, for sending the first instruction information to the UE, the first instruction information is used In notifying the UE VoLTE business not supported.

In the embodiment of the present invention, the transmission unit 102 is also used to:

To the HSS of the UE, perhaps HLR sends the second indication information second indication information for notifying the HSS or the HLR VoLTE business that cannot be supported.

Optionally, the processing unit 101, is also used to:

Before the transmission unit 102 sends the first instruction information to the UE, determine that the VPLMN does not support to carry out Lawful Interception to the VoLTE business of the first kind UE.

Optionally, the processing unit 101, is also used to:

Before the transmission unit 102 sends the first instruction information to the UE, determine that the UE needs are lawfully intercepted.

Optionally, in the embodiment of the present invention, the processing unit 101, specifically for determining that the UE needs are lawfully intercepted as follows:

The identification information of the UE is obtained, and the identification information of the UE is sent to Lawful Interception control equipment or Lawful Interception execution equipment.

Receiving the Lawful Interception control equipment UE that perhaps Lawful Interception executes equipment transmission is that the judging result judging result of Lawful Interception object controls equipment for the Lawful Interception or Lawful Interception executes equipment and determines according to the identification information of the UE.

Obtain the identification information of the UE.

Judge whether the identification information of the UE is included in the identification information set of Lawful Interception object, the identification information collection of the Lawful Interception object is combined into Lawful Interception control equipment or Lawful Interception executes what equipment was sent.

In the embodiment of the present invention, the processing unit 101 is also used to determine whether the UE is in EPS Attach process or TAU process.

The transmission unit 102 is specifically used for sending the first instruction information to the UE as follows:

If the processing unit 101 determines that the UE is in EPS Attach process or TAU process, in the Attach Accept message sent to the UE, the first instruction information is carried.Alternatively, carrying the first instruction information in the TAU Accept message sent to the UE.

In the embodiment of the present invention, the processing unit 101 is also used to determine whether the UE is in EPS attachment Attach process or TAU process.

If the processing unit 101 determines that the UE has completed EPS Attach process or TAU process, Detach Request message is sent to the UE, the attachment removal request message re-initiates attaching process or TAU process for triggering the UE.

In Attach Accept message or in TAU Accept message, the first instruction information is carried.

In the embodiment of the present invention, the processing unit 101 is also used to:

Before the transmission unit 102 sends attachment removal request Detach Request message to the UE, determine that the VoLTE service conversation of the UE terminates.

In the embodiment of the present invention, the first instruction information are as follows: IMS voice over PS session not supported.

In the embodiment of the present invention, the second indication information are as follows: homogeneous support of IMS voice over PS sessions not supported.

It include attachment removal type cell in the Detach Request message in the embodiment of the present invention, the attachment removal type cell is IMSI Detach.

In the embodiment of the present invention, the processing unit 101 is specifically used for determining that UE is first kind UE as follows:

It is determined by the instruction information that the UE is first kind UE in the VPLMN that is used to indicate for including in subscription data.Or

It include that visit address is allowed to indicate that information determines by being directed to the VPLMN not in subscription data.Or

In the embodiment of the present invention, the Lawful Interception control equipment includes ADMF or LEA.

The legal execution equipment includes HSS, SGW or PGW.

The voice communication assembly 100 provided based on the above embodiment, the embodiment of the present invention also provides a kind of voice communication assembly 1000, Fig. 7 show the composition schematic diagram of voice communication assembly 1000 provided in an embodiment of the present invention, as shown in Figure 7, voice communication assembly 1000 provided in an embodiment of the present invention includes memory 1001, processor 1002 and transmitter 1003, wherein

Memory 1001, the program code for storage processor 1002.

Processor 1002, the program code for calling memory 1001 to store execute the function of voice communication that the above embodiment of the present invention is related to, and send the first instruction information and second indication information to UE by transmitter 1003.

The concrete function that voice communication assembly 1000 has in the embodiment of the present invention sees the associated description of above-described embodiment, and details are not described herein for the embodiment of the present invention.

It can be understood that voice communication assembly 100 and voice communication assembly 1000 involved in the embodiment of the present invention can be can the network equipment that is handled of mobile management process to UE and session management process, the optional voice communication assembly 100 and the voice communication assembly 1000 can be mobility management entity MME.

It should be noted that memory involved in the above embodiment of the present invention, can be read-only memory (English: read-only memory；Referred to as: ROM), random access memory (English: random access memory；Referred to as: RAM), it is also possible to Electrically Erasable Programmable Read-Only Memory (English: Electrically Erasable Programmable Read-Only Memory；Referred to as: EEPROM), magnetic disk storage medium or other magnetic storage apparatus or can be used in carry or store have instruction or data structure form desired program code and can be by any other medium of computer access, but not limited to this, such as memory can be the combination of above-mentioned memory.

The present embodiments relate to processor, can be a general central processing unit, using the various pieces of various interfaces and connection whole equipment, by running or executing the finger being stored in memory The data being stored in memory are enabled and called, the various functions and processing data of relevant device are executed, to carry out integral monitoring to relevant device.Optionally, processor may include one or more processing units；Preferably, processor can integrate application processor and modem processor, wherein the main processing operation system of application processor, user interface and application program etc., modem processor mainly handles wireless communication.It is understood that above-mentioned modem processor can not also be integrated into the processor.

In some embodiments, processor, can be realized memory the present invention on a single chip.

Voice communication assembly provided in an embodiment of the present invention, MME determine that UE is to be roamed into VPLMN, and need to carry out the UE of VoLTE using the HR communication mechanism based on S8 interface.The MME sends the first instruction information to the UE, to notify VPLMN described in the UE not support VoLTE business, so that the UE caller carries out voice service using CSFB, if therefore VPLMN does not support to execute Lawful Interception to the VoLTE audio call that the UE is initiated, VPLMN only provides CS voice service to the UE and does not provide VoLTE voice service, guarantees to execute Lawful Interception in audio call of the domain CS to the UE.

It should be understood by those skilled in the art that, the embodiment of the present invention can provide as method, system or computer program product.Therefore, the form of complete hardware embodiment, complete software embodiment or embodiment combining software and hardware aspects can be used in the present invention.Moreover, the form for the computer program product implemented in the computer-usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) that one or more wherein includes computer usable program code can be used in the present invention.

The present invention be referring to according to the method for the embodiment of the present invention, the flowchart and/or the block diagram of equipment (system) and computer program product describes.It should be understood that the combination of process and/or box in each flow and/or block and flowchart and/or the block diagram that can be realized by computer program instructions in flowchart and/or the block diagram.These computer program instructions be can provide to the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to generate a machine, so that generating by the instruction that computer or the processor of other programmable data processing devices execute for realizing the function of specifying in one or more flows of the flowchart and/or one or more blocks of the block diagram Device.

These computer program instructions, which may also be stored in, to be able to guide in computer or other programmable data processing devices computer-readable memory operate in a specific manner, so that instruction stored in the computer readable memory generates the manufacture including command device, which realizes the function of specifying in one or more flows of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that series of operation steps are executed on a computer or other programmable device to generate computer implemented processing, thus the step of instruction executed on a computer or other programmable device is provided for realizing the function of specifying in one or more flows of the flowchart and/or one or more blocks of the block diagram.

Although preferred embodiments of the present invention have been described, once a person skilled in the art knows basic creative concepts, then additional changes and modifications can be made to these embodiments.So it includes preferred embodiment and all change and modification for falling into the scope of the invention that the following claims are intended to be interpreted as.

Obviously, those skilled in the art can carry out various modification and variations without departing from the spirit and scope of the embodiment of the present invention to the embodiment of the present invention.If then the present invention is also intended to include these modifications and variations in this way, these modifications and variations of the embodiment of the present invention are within the scope of the claims of the present invention and its equivalent technology.

Claims

A kind of voice communication method characterized by comprising

Mobility management apparatus determines that user equipment (UE) is first kind UE；

The first kind UE, which refers to, is roamed into visited Public Land mobile network VPLMN, and needs to carry out the UE of long term evolution LTE voice service VoLTE using the ownership routing HR communication mechanism based on S8 interface；

The mobility management apparatus sends the first instruction information to the UE, and the first instruction information is for notifying that the UE VoLTE business is not supported.
The method as described in claim 1, which is characterized in that further include:

To the home subscriber server HSS of the UE, perhaps home location register HLR sends the second indication information second indication information for notifying the HSS or the HLR VoLTE business that cannot be supported to the mobility management apparatus.
It is method according to claim 1 or 2, which is characterized in that the mobility management apparatus is sent to the UE before the first instruction information further include:

The mobility management apparatus determines that the VPLMN does not support to carry out Lawful Interception to the VoLTE business of the first kind UE.
Method as described in any one of claims 1 to 3, which is characterized in that the mobility management apparatus is sent to the UE before the first instruction information further include:

The mobility management apparatus determines that the UE needs are lawfully intercepted.
Method as claimed in claim 4, which is characterized in that the mobility management apparatus determines that the UE needs are lawfully intercepted, comprising:

The mobility management apparatus obtains the identification information of the UE, and the identification information of the UE is sent to Lawful Interception control equipment or Lawful Interception execution equipment；

It is that the judging result judging result of Lawful Interception object controls equipment for the Lawful Interception or Lawful Interception executes equipment and determines according to the identification information of the UE that the mobility management apparatus, which receives the Lawful Interception control equipment UE that perhaps Lawful Interception executes equipment transmission,；

The mobility management apparatus determines that the UE needs are lawfully intercepted according to the judging result.
Method as claimed in claim 4, which is characterized in that the mobility management apparatus determines that the UE needs are lawfully intercepted, comprising:

The mobility management apparatus obtains the identification information of the UE；

The mobility management apparatus judges whether the identification information of the UE is included in the identification information set of Lawful Interception object, and the identification information collection of the Lawful Interception object is combined into Lawful Interception control equipment or Lawful Interception executes what equipment was sent；

If the identification information of the UE is included in the identification information set of Lawful Interception object, the mobility management apparatus determines that the UE needs are lawfully intercepted.
Such as method as claimed in any one of claims 1 to 6, which is characterized in that the mobility management apparatus sends the first instruction information to the UE, comprising:

If the mobility management apparatus determines that the UE carries out evolved packet system EPS attachment Attach process or tracing section updating TAU process,

The mobility management apparatus receives in Attach Accept message in the attachment sent to the UE, carries the first instruction information；Alternatively,

The mobility management apparatus receives in TAU Accept message in the tracing section updating sent to the UE, carries the first instruction information.
Such as method as claimed in any one of claims 1 to 6, which is characterized in that the mobility management apparatus sends the first instruction information to the UE, comprising:

If the mobility management apparatus determines that the UE has completed evolved packet system EPS attachment Attach process or tracing section updating TAU process,

The mobility management apparatus sends attachment removal to the UE and requests Detach Request message, and the attachment removal request message re-initiates attaching process or TAU process for triggering the UE；

The mobility management apparatus receives in Attach Accept message in attachment or tracing section updating receives in TAU Accept message, carries the first instruction information.
Method according to claim 8, which is characterized in that the mobility management apparatus is sent to the UE before attachment removal request Detach Request message, further includes:

The mobility management apparatus determines that the VoLTE service conversation of the UE terminates.
Method as described in any one of claim 1 to 9, which is characterized in that the first instruction information are as follows:

IP multimedia subsystem IMS voice based on packet switch PS session is not supported IMS voice over PS session not supported.
Method according to claim 2, which is characterized in that the second indication information are as follows:

IP multimedia subsystem IMS voice based on packet switch PS session is not supported homogeneous support of IMS voice over PS sessions not supported.
Method according to claim 8 or claim 9, which is characterized in that include attachment removal type cell in the Detach Request message, the attachment removal type cell is international mobile subscriber identity attachment removal IMSI Detach.
The method as described in claim 1, which is characterized in that the mobility management apparatus determines that UE is first kind UE, comprising:

The mobility management apparatus is determined by the instruction information that the UE is first kind UE in the VPLMN that is used to indicate for including in subscription data；Or

The mobility management apparatus is not by including that visit address is allowed to indicate that information is determined for the VPLMN in subscription data；Or

The mobility management apparatus passes through the roaming agreement signed between VPLMN and Home Public Land Mobile Network, HPLMN HPLMN and determines.
Such as method described in claim 5 or 6, which is characterized in that the Lawful Interception control equipment includes management function entity A DMF or listening center LEA；

The legal execution equipment includes home subscriber server HSS, Service Gateway SGW or public data network gateway PGW.
A kind of voice communication assembly characterized by comprising

Processing unit, for determining that user equipment (UE) is first kind UE；

The first kind UE, which refers to, is roamed into visited Public Land mobile network VPLMN, and needs to carry out the UE of long term evolution LTE voice service VoLTE using the ownership routing HR communication mechanism based on S8 interface；

Transmission unit, for sending the first instruction information to the UE, the first instruction information is for leading to Know that the UE VoLTE business is not supported.
Device as claimed in claim 15, which is characterized in that the transmission unit is also used to:

To the home subscriber server HSS of the UE, perhaps home location register HLR sends the second indication information second indication information for notifying the HSS or the HLR VoLTE business that cannot be supported.
Device as described in claim 15 or 16, which is characterized in that the processing unit is also used to:

Before the transmission unit sends the first instruction information to the UE, determine that the VPLMN does not support to carry out Lawful Interception to the VoLTE business of the first kind UE.
Such as the described in any item devices of claim 15 to 17, which is characterized in that the processing unit is also used to:

Before the transmission unit sends the first instruction information to the UE, determine that the UE needs are lawfully intercepted.
Device as claimed in claim 18, which is characterized in that the processing unit, specifically for determining that the UE needs are lawfully intercepted as follows:

The identification information of the UE is obtained, and the identification information of the UE is sent to Lawful Interception control equipment or Lawful Interception execution equipment；

Receiving the Lawful Interception control equipment UE that perhaps Lawful Interception executes equipment transmission is that the judging result judging result of Lawful Interception object controls equipment for the Lawful Interception or Lawful Interception executes equipment and determines according to the identification information of the UE；

According to the judging result, determine that the UE needs are lawfully intercepted.
Device as claimed in claim 18, which is characterized in that the processing unit, specifically for determining that the UE needs are lawfully intercepted as follows:

Obtain the identification information of the UE；

Judge whether the identification information of the UE is included in the identification information set of Lawful Interception object, the identification information collection of the Lawful Interception object is combined into Lawful Interception control equipment or Lawful Interception executes what equipment was sent；

If the identification information of the UE is included in the identification information set of Lawful Interception object, it is determined that the UE needs are lawfully intercepted.
Such as the described in any item devices of claim 15 to 20, which is characterized in that

The processing unit, is also used to determine whether the UE is in evolved packet system EPS attachment Attach process or tracing section updating TAU process；

The transmission unit is specifically used for sending the first instruction information to the UE as follows:

If the processing unit determines that the UE is in EPS Attach process or TAU process, receive in Attach Accept message in the attachment sent to the UE, carries the first instruction information；Alternatively, receiving in TAU Accept message in the tracing section updating sent to the UE, the first instruction information is carried.
Such as the described in any item devices of claim 15 to 20, which is characterized in that

The processing unit, is also used to determine whether the UE is in evolved packet system EPS attachment Attach process or tracing section updating TAU process；

The transmission unit is specifically used for sending the first instruction information to the UE as follows:

If the processing unit determines that the UE has completed EPS Attach process or TAU process, attachment removal is sent to the UE and requests Detach Request message, the attachment removal request message re-initiates attaching process or TAU process for triggering the UE；

Receive in Attach Accept message in attachment or tracing section updating receives in TAU Accept message, carries the first instruction information.
Device as claimed in claim 22, which is characterized in that the processing unit is also used to:

Before the transmission unit sends attachment removal request Detach Request message to the UE, determine that the VoLTE service conversation of the UE terminates.
Such as the described in any item devices of claim 15 to 23, which is characterized in that the first instruction information are as follows:

IP multimedia subsystem IMS voice based on packet switch PS session is not supported IMS voice over PS session not supported.
Device as claimed in claim 16, which is characterized in that the second indication information are as follows:

IP multimedia subsystem IMS voice based on packet switch PS session is not supported homogeneous support of IMS voice over PS sessions not supported.
The device according to claim 22 or 23, which is characterized in that include attachment removal type cell in the Detach Request message, the attachment removal type cell is international mobile subscriber identity attachment removal IMSI Detach.
Device as claimed in claim 15, which is characterized in that the processing unit is specifically used for determining that UE is first kind UE as follows:

It is determined by the instruction information that the UE is first kind UE in the VPLMN that is used to indicate for including in subscription data；Or

It include that visit address is allowed to indicate that information determines by being directed to the VPLMN not in subscription data；Or

It is determined by the roaming agreement signed between VPLMN and Home Public Land Mobile Network, HPLMN HPLMN.
Device as described in claim 19 or 20, which is characterized in that the Lawful Interception control equipment includes management function entity A DMF or listening center LEA；

The legal execution equipment includes home subscriber server HSS, Service Gateway SGW or public data network gateway PGW.
Such as the described in any item devices of claim 15 to 28, which is characterized in that the voice communication assembly is mobility management entity MME.