CN104507131A - Determination method for voice service scheme of VoLTE (Voice over Long Term Evolution) terminal and VoLTE terminal - Google Patents
Determination method for voice service scheme of VoLTE (Voice over Long Term Evolution) terminal and VoLTE terminal Download PDFInfo
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- CN104507131A CN104507131A CN201510001856.5A CN201510001856A CN104507131A CN 104507131 A CN104507131 A CN 104507131A CN 201510001856 A CN201510001856 A CN 201510001856A CN 104507131 A CN104507131 A CN 104507131A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0022—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W36/14—Reselecting a network or an air interface
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Abstract
The invention provides a determination method for a voice service scheme of a VoLTE (Voice over Long Term Evolution) terminal and the VoLTE terminal. The method comprises the following steps: reselecting from a 2G/3G (Two-Generation/Three-Generation) cell to an LTE cell by the VoLTE terminal according to cell signal intensity measured in a preset range; if a reselected LTE cell identity is stored at the VoLTE terminal, transmitting a first position updating request to a mobile management entity MME by the VoLTE terminal, wherein a VoLTE voice service scheme restriction identity is carried in the first position updating request, so an IMS (IP Multimedia Subsystem) unregistration request message of the VoLTE terminal is transmitted to an IMS by a home subscriber server HSS according to the VoLTE voice service scheme restriction identity carried in a first position updating message; receiving, by the VoLTE terminal, an IMS unregistration success response message transmitted by the IMS; determining circuit switched fallback CSFB according to the IMS unregistration success response message to serve as the voice service scheme of the VoLTE terminal to perform the voice service.
Description
Technical field
The embodiment of the present invention relates to communication technical field, particularly relates to a kind of VoLTE terminal speech operational program defining method and VoLTE terminal.
Background technology
Long Term Evolution (Long Term Evolution, being called for short LTE) network compares 2G/3G network and only has packet-switched domain (Packet Switch Domain, be called for short PS territory), there is no circuit commutative field (CircuitSwitched Domain, be called for short CS territory), so realizing speech business is in the lte networks the technology that operator's emphasis is considered.Adopt based on IP multimedia subsystem, IMS (IP Multimedia Subsystem, be called for short IMS) speech business scheme (Voice over LTE, be called for short VoLTE) become targeted solution, it can coordinate LTE network or 4G core network (Evolved Packet Core is called for short EPC network) to realize end to end based on the speech business in PS territory.
According to 3G (Third Generation) Moblie partnership agreement (the 3rd Generation PartnershipProject, be called for short 3GPP agreement), in VoLTE terminal, when being configured to initiate speech business, the voice scheme in first-selected IMSPS territory, the secondary voice scheme selecting CS territory.So adopt VoIMS technology when VoLTE terminal initiates speech business in LTE community, shift out from LTE community in VoLTE terminal, when entering the community of the 2G/3G network coverage, single wireless voice calling continuity technology (Single Radio Voice CallContinuity is called for short SRVCC) is adopted to ensure that speech business takes over seamlessly 2G/3G community from LTE community.
When VoLTE terminal carries out speech business, when moving to 2G/3G community from LTE community, SRVCC technology is adopted to take over seamlessly the continuity keeping speech business.Because SRVCC technology needs distance terminal to carry out medium surface renewal by IMS network, so the break period switched is longer, and because SRVCC signaling procedure and IMS domain switch the synchronization mechanism imperfection switched with air interface respectively, handoff procedure is comparatively complicated, so the success rate switched is not high.Therefore carry out in LTE network coverage cell speech business also moves to 2G/3G community at short notice VoLTE terminal from LTE community for frequent, when adopting SRVCC technology to carry out speech business switching, the break period switched is longer, the success rate switched is not high, have a strong impact on the communication quality of VoLTE terminal speech business, Consumer's Experience is poor.
Summary of the invention
The embodiment of the present invention provides a kind of VoLTE terminal speech operational program defining method and VoLTE terminal, achieve the overlapping region being in LTE community and 2G/3G community, and the VoLTE terminal frequently moving to 2G/3G community from the overlapping region of LTE community and 2G/3G community adopts circuit domain dropping CSFB to carry out speech business, decrease the break period of switching, improve the success rate that speech business switches, and then improve Consumer's Experience.
The invention provides a kind of VoLTE terminal speech operational program defining method, comprising:
VoLTE terminal according to the cell signal strength measured in preset range from 2G/3G cell reselection to LTE community;
If the LTE cell ID that described VoLTE terminal storage has described gravity treatment to arrive, then described VoLTE terminal sends primary importance update request to mobile management entity MME, carry VoLTE speech business scheme restriction mark in described primary importance update request, the VoLTE speech business scheme restriction mark of carrying in the primary importance updating message sent according to described mobile management entity MME to make home subscriber server HSS sends the IMS de-registration request message of described VoLTE terminal to multimedia subsystem, IMS;
Described VoLTE terminal receives the IMS cancellation success response message that described multimedia subsystem, IMS sends;
Described VoLTE terminal is nullified success response message determination circuit domain dropping CSFB according to described IMS and is carried out speech business as the speech business scheme of described VoLTE terminal.
The invention provides a kind of VoLTE terminal, comprising:
Gravity treatment module, for according to the cell signal strength measured in preset range from 2G/3G cell reselection to LTE community;
Sending module, if for storing the LTE cell ID that described gravity treatment is arrived, then send primary importance update request to mobile management entity MME, carry VoLTE speech business scheme restriction mark in described primary importance update request, the VoLTE speech business scheme restriction mark of carrying in the primary importance updating message sent according to described mobile management entity MME to make home subscriber server HSS sends the IMS de-registration request message of described VoLTE terminal to multimedia subsystem, IMS;
Receiver module, the IMS sent for receiving described multimedia subsystem, IMS nullifies success response message;
Determination module: carry out speech business as the speech business scheme of described VoLTE terminal for nullifying success response message determination circuit domain dropping CSFB according to described IMS.
The invention provides a kind of VoLTE terminal speech operational program defining method and VoLTE terminal, by VoLTE terminal according to the cell signal strength measured in preset range from 2G/3G cell reselection to LTE community; If the LTE cell ID that VoLTE terminal storage has gravity treatment to arrive, then VoLTE terminal sends primary importance update request to mobile management entity MME, carry VoLTE speech business scheme restriction mark in primary importance update request, the VoLTE speech business scheme restriction mark of carrying in the primary importance updating message sent according to mobile management entity MME to make home subscriber server HSS is to the IMS de-registration request message of multimedia subsystem, IMS transmission VoLTE terminal; VoLTE terminal receives the IMS cancellation success response message that multimedia subsystem, IMS sends; VoLTE terminal is nullified success response message determination circuit domain dropping CSFB according to IMS and is carried out speech business as the speech business scheme of VoLTE terminal, achieve the overlapping region being in LTE community and 2G/3G community, and the VoLTE terminal frequently moving to 2G/3G community from the overlapping region of LTE community and 2G/3G community adopts circuit domain dropping CSFB to carry out speech business, decrease the break period of switching, improve the success rate that speech business switches, and then improve Consumer's Experience.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the flow chart of VoLTE terminal speech operational program defining method embodiment one of the present invention;
Fig. 2 is the application scenarios Organization Chart of VoLTE terminal speech operational program defining method embodiment one of the present invention;
Fig. 3 is the flow chart of VoLTE terminal speech operational program defining method embodiment two of the present invention;
Fig. 4 is the signaling process figure of VoLTE terminal speech operational program defining method embodiment three of the present invention;
Fig. 5 is the structural representation of VoLTE terminal embodiment one of the present invention;
Fig. 6 is the structural representation of VoLTE terminal embodiment two of the present invention.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Fig. 1 is the flow chart of VoLTE terminal speech operational program defining method embodiment one of the present invention, and as shown in Figure 1, the executive agent of the present embodiment is VoLTE terminal, and the mode that specifically can be combined by software, hardware or software and hardware in VoLTE terminal is realized.Then the method comprises:
Step 101, VoLTE terminal according to the cell signal strength measured in preset range from 2G/3G cell reselection to LTE community.
In the present embodiment, VoLTE terminal refers to speech business scheme (the Voice over LTE supported based on IP multimedia subsystem, IMS, be called for short VoLTE) and be configured to initiate speech business time first-selected IMS PS territory voice scheme, the secondary terminal selecting CS territory voice scheme can be smart mobile phone, panel computer etc.
Fig. 2 is the application scenarios Organization Chart of VoLTE terminal speech operational program defining method embodiment one of the present invention, and as shown in Figure 2, the application scenarios in the present embodiment is that LTE community 1 and 2G/3G community 2 exist overlapping region 3.LTE deploys IMS network in community, can dispose IMS network in 2G/3G community, and also can not dispose IMS network, the present embodiment does not limit this.Fig. 2 signal be the schematic diagram of the simple application scene of VoLTE terminal speech operational program defining method embodiment one of the present invention, this enforcement also can be applicable to more complicated application scenarios, as LTE community and multiple 2G/3G community exist overlapping region.For convenience, the defining method of terminal speech operational program of the present invention is introduced in the present embodiment in detail with the application scenarios shown in Fig. 2.
In the present embodiment, VoLTE terminal is in overlapping region 3, and VoLTE terminal frequently initiates speech business in overlapping region 3, and moves to 2G/3G community 2 from overlapping region 3 when carrying out speech business.VoLTE terminal frequently initiates speech business in overlapping region 3, and move to this process of 2G/3G community 2 when carrying out speech business from overlapping region 3 and refer to that VoLTE terminal is in overlapping region 3 and initiate speech business, and move to 2G/3G community 2 from overlapping region 3 in speech business process, move to VoLTE terminal after in 2G/3G community 2 and stop speech business, move to overlapping region 3 from 2G/3G community 2 again, the gravity treatment of VoLTE terminal is to LTE community 1, again initiate speech business in overlapping region 3, with this repeatedly.
In the present embodiment, VoLTE terminal according to the cell signal strength measured in preset range from 2G/3G cell reselection to LTE community before, VoLTE terminal is measured the cell signal in preset range, has not only comprised measuring the cell signal strength of preset range Nei LTE community but also comprising measuring the cell signal strength of the 2G/3G community in preset range.
In the present embodiment, VoLTE terminal specifically refers to LTE community from 2G/3G cell reselection according to the cell signal strength measured in preset range: when the cell signal strength in the preset range that VoLTE terminal measures, LTE cell signal strength be less than first threshold and 2G/3G cell signal strength is less than Second Threshold time, the gravity treatment of VoLTE terminal is in LTE community.
Wherein, first threshold and Second Threshold preset, first threshold represents that the LTE cell signal strength value that terminal measures when LTE community 1 enters overlapping region 3, Second Threshold represent the 2G/3G cell signal strength value that terminal measures when 2G/3G community enters into overlapping region 3.
When VoLTE terminal according to the cell signal strength measured in preset range from 2G/3G cell reselection to LTE community time, VoLTE terminal is arranged in overlapping region 3.
Step 102, if the LTE cell ID that VoLTE terminal storage has gravity treatment to arrive, then VoLTE terminal sends primary importance update request to mobile management entity MME, carry VoLTE speech business scheme restriction mark in primary importance update request, the VoLTE speech business scheme restriction mark of carrying in the primary importance updating message sent according to mobile management entity MME to make home subscriber server HSS is to the IMS de-registration request message of multimedia subsystem, IMS transmission VoLTE terminal.
In the present embodiment, after VoLTE terminal gravity treatment to LTE community, VoLTE terminal is initiatively to the network element launch position renewal process in network.So primary importance update request in the present embodiment and primary importance updating message are after VoLTE terminal gravity treatment to LTE community, the initiatively position updating request of launch position renewal process and location update message.
When VoLTE terminal initiatively carries out location updating, if the LTE cell ID that VoLTE terminal storage has gravity treatment to arrive, then VoLTE terminal is when carrying out location updating, primary importance update request is sent to mobile management entity MME, carry VoLTE speech business scheme restriction mark in primary importance update request, the VoLTE speech business scheme restriction mark of carrying in the primary importance updating message sent according to described mobile management entity MME to make home subscriber server HSS sends the IMS de-registration request message of described VoLTE terminal to multimedia subsystem, IMS.So the VoLTE speech business scheme restriction mark in the present embodiment initiatively carries out sending to home subscriber server HSS in the process of location updating in VoLTE terminal, to carry out the IMS log off procedure of follow-up VoLTE terminal.
Wherein, in primary importance update request and primary importance updating message, the LTE cell ID that VoLTE terminal iidentification and gravity treatment are arrived also is carried, to carry out location updating to VoLTE.
Particularly, the symbol being designated any one unique identification VoLTE terminal in international mobile subscriber identity IMSI, mobile subscriber number MSISDN, IP address, IP multimedia public identity IMPU of VoLTE terminal, also can be self-defining identifier, the present embodiment limit.
The mark of LTE community represents with the Physical Cell Identifier number (Physical Cell ID is called for short PCI) of LTE community.
Step 103, VoLTE terminal receives the IMS cancellation success response message that multimedia subsystem, IMS sends.
In the present embodiment, VoLTE terminal receives the IMS cancellation success response message that the multimedia subsystem, IMS in LTE community sends, although represent in VoLTE terminal the voice scheme in first-selected IMS PS territory when being configured to initiate speech business, the secondary voice scheme selecting CS territory, but due to multimedia subsystem, IMS this VoLTE terminal canceled, so this VoLTE terminal can not adopt the voice scheme in IMS PS territory when carrying out speech business.
Step 104, VoLTE terminal is nullified success response message determination circuit domain dropping CSFB according to IMS and is carried out speech business as the speech business scheme of VoLTE terminal.
In the present embodiment, if VoLTE terminal initiates speech business, VoLTE terminal is nullified success response message according to IMS and is judged to adopt the voice scheme in IMS PS territory to carry out speech business, then adopt the voice scheme in CS territory to carry out speech business.
Particularly, when adopting the voice scheme in CS territory to carry out speech business, determine that circuit domain dropping CSFB carries out speech business as the speech business scheme of VoLTE terminal.
In the present embodiment, by VoLTE terminal according to the cell signal strength measured in preset range from 2G/3G cell reselection to LTE community; If the LTE cell ID that VoLTE terminal storage has gravity treatment to arrive, then VoLTE terminal sends primary importance update request to mobile management entity MME, carry VoLTE speech business scheme restriction mark in primary importance update request, the VoLTE speech business scheme restriction mark of carrying in the primary importance updating message sent according to mobile management entity MME to make home subscriber server HSS is to the IMS de-registration request message of multimedia subsystem, IMS transmission VoLTE terminal; VoLTE terminal receives the IMS cancellation success response message that multimedia subsystem, IMS sends; VoLTE terminal is nullified success response message determination circuit domain dropping CSFB according to IMS and is carried out speech business as the speech business scheme of VoLTE terminal.Compared to the voice scheme of single wireless voice calling continuity technology SRVCC, the voice scheme of CSFB has the implementation of very underloading, and new technology shows to initiate in the overlapping region of LTE community and 2G/3G community speech business, and to adopt the voice scheme of CSFB to carry out the handover delay of speech business lower, handover success rate is high, so in the present embodiment, achieve the overlapping region being in LTE community and 2G/3G community, and the VoLTE terminal frequently moving to 2G/3G community from the overlapping region of LTE community and 2G/3G community adopts circuit domain dropping CSFB to carry out speech business, decrease the break period of switching, improve the success rate that speech business switches, and then raising Consumer's Experience.
Fig. 3 is the flow chart of VoLTE terminal speech operational program defining method embodiment two of the present invention, and as shown in Figure 3, the executive agent of the present embodiment is VoLTE terminal, and the mode that specifically can be combined by software, hardware or software and hardware in VoLTE terminal is realized.Then the method comprises:
Step 201, VoLTE terminal according to the cell signal strength measured in preset range from 2G/3G cell reselection to LTE community.
Further, before step 201, the cell signal strength of VoLTE terminal to preset range Nei LTE community and 2G/3G community is measured.
Step 202, VoLTE terminal judges its whether store the LTE cell ID that gravity treatment arrives, if so, then perform step 203, if not, then perform step 204.
Step 203, VoLTE terminal sends primary importance update request to mobile management entity MME, VoLTE speech business scheme restriction mark is carried in primary importance update request, the VoLTE speech business scheme restriction mark of carrying in the primary importance updating message sent according to mobile management entity MME to make home subscriber server HSS sends the IMS de-registration request message of VoLTE terminal to multimedia subsystem, IMS, perform step 206.
In the present embodiment, in primary importance update request except carrying VoLTE speech business scheme restriction mark, also carry the LTE cell ID that VoLTE terminal iidentification and gravity treatment are arrived, to complete the location updating of VoLTE terminal.
Step 204, VoLTE terminal sends second place update request to mobile management entity MME, second place updating message is sent to home subscriber server HSS to make mobile management entity MME, home subscriber server HSS upgrades response message to MME home position, completes the location updating of VoLTE terminal.
In the present embodiment, if do not store the LTE cell ID that gravity treatment is arrived in VoLTE terminal, then only carry the LTE cell ID that VoLTE terminal iidentification and gravity treatment are arrived in second place update request and second place updating message, complete the location updating of VoLTE terminal, do not carry VoLTE speech business scheme restriction mark.
Step 205, if VoLTE terminal is initiated speech business in LTE community and moved to 2G/3G community in Preset Time Nei Cong LTE community, then the mark of VoLTE terminal storage LTE community, performs step 201.
Wherein, Preset Time presets, to ensure that VoLTE terminal is positioned at the overlapping region 3 of LTE community 1 and 2G/3G community 2 when initiating speech business.
In the present embodiment, Dui LTE community initiates speech business and the LTE cell ID moving to 2G/3G community in Preset Time Nei Cong LTE community stores, when VoLTE terminal stores the LTE community of LTE cell ID from 2G/3G cell reselection to this, show that this VoLTE terminal frequently initiates speech business frequently in the overlapping region 3 of the LTE community 1 and 2G/3G community 2 that store LTE cell ID, and move to 2G/3G community 2 from overlapping region 3 when carrying out speech business.
In the present embodiment, VoLTE terminal is when moving to 2G/3G community 2 from overlapping region 3, store the mark of LTE community 1, be that the preliminary treatment that speech business the VoLTE terminal moving to 2G/3G community 2 from overlapping region 3 in speech business process carry out is initiated to the VoLTE terminal being in overlapping region 3, to make subsequent multimedia subsystem, IMS, cancellation carried out to VoLTE terminal and prepare.
Step 206, VoLTE terminal receives the IMS cancellation success response message that multimedia subsystem, IMS sends.
In the present embodiment, VoLTE terminal receives the IMS cancellation success response message that multimedia subsystem, IMS sends, although represent in VoLTE terminal the voice scheme in first-selected IMS PS territory when being configured to initiate speech business, the secondary voice scheme selecting CS territory, but due to multimedia subsystem, IMS this VoLTE terminal canceled, so this terminal can not adopt the voice scheme in IMS PS territory when carrying out speech business, the voice scheme in CS territory is initiatively adopted to carry out speech business.
Step 207, VoLTE terminal is nullified success response message determination circuit domain dropping CSFB according to IMS and is carried out speech business as the speech business scheme of VoLTE terminal.
In the present embodiment, if VoLTE terminal initiates speech business, VoLTE terminal is nullified success response message according to IMS and is judged to adopt the voice scheme in IMS PS territory to carry out speech business, then adopt the voice scheme in CS territory to carry out speech business.
Particularly, when adopting the voice scheme in CS territory to carry out speech business, determine that circuit domain dropping CSFB carries out speech business as the speech business scheme of VoLTE terminal.
Step 208, it is first pre-conditioned whether the cell signal strength of the 2G/3G community in VoLTE terminal judges gravity treatment Dao LTE community and preset range meets, and if so, then performs step 209, if not, then perform step 207.
In the present embodiment, the LTE cell signal strength of the first pre-conditioned gravity treatment for measuring is greater than the 3rd threshold value and the 2G/3G cell signal strength measured is less than the 4th threshold value, wherein, 3rd threshold value and the 4th threshold value preset, 3rd threshold value represents that VoLTE terminal shifts out the LTE cell signal strength value measured when thoroughly entering gravity treatment Dao LTE community from overlapping region 3, and the 4th threshold value represents that VoLTE terminal shifts out the 2G/3G cell signal strength value measured when thoroughly entering gravity treatment Dao LTE community from overlapping region 3.
When the 2G/3G community in gravity treatment Dao LTE community and preset range cell signal strength meet first pre-conditioned time, VoLTE terminal shifts out the LTE center of housing estate position that overlapping region 3 is positioned at close gravity treatment, can be expressed as the regional extent of the LTE community 1 that the dotted line in Fig. 2 Zhong LTE community 1 represents.
Step 209, VoLTE terminal sends the 3rd position updating request to mobile management entity MME, carry VoLTE speech business scheme permission flag in 3rd position updating request, the VoLTE speech business scheme permission flag of carrying in the 3rd location update message sent according to mobile management entity MME to make home subscriber server HSS sends the IMS registration request message of VoLTE terminal to multimedia subsystem, IMS.
In the present embodiment, the 3rd position updating request and the 3rd location update message be VoLTE terminal periodic carry out position updating request that position updating process sends to network element and location update message.
In the present embodiment, when the 2G/3G community in gravity treatment Dao LTE community and preset range cell signal strength meet first pre-conditioned time, VoLTE terminal shifts out the LTE center of housing estate position that overlapping region 3 is positioned at close gravity treatment, carry out in periodic position updating process in VoLTE terminal, VoLTE speech business scheme permission flag is carried in the 3rd position updating request, VoLTE speech business scheme permission flag in the 3rd location update message sent according to mobile management entity MME to make attribution server HSS sends the IMS registration request message of VoLTE terminal to multimedia subsystem, IMS, when shifting out the LTE center of housing estate position that overlapping region 3 is positioned near gravity treatment to make VoLTE terminal, VoLTE voice scheme still can be adopted to carry out speech business.
Step 210, receives the IMS registration success response message that multimedia subsystem, IMS sends.
In the present embodiment, VoLTE terminal receives the IMS registration success response message that the multimedia subsystem, IMS in LTE community sends, and represents that VoLTE terminal shifts out when overlapping region 3 is positioned at LTE community 1 near center location of close gravity treatment and still adopts VoLTE speech business scheme.
Step 211, according to IMS registration success response message, VoLTE terminal determines that VoLTE speech business scheme carries out speech business as the speech business scheme of described VoLTE terminal.
In the present embodiment, according to IMS registration success response message, VoLTE terminal determines that VoLTE speech business scheme carries out speech business as the speech business scheme of VoLTE terminal, is specially and determines that the voice scheme in IMS PS territory carries out speech business.
In the present embodiment, realizing the overlapping region being in LTE community and 2G/3G community, and the VoLTE terminal frequently moving to 2G/3G community from the overlapping region of LTE community and 2G/3G community adopts circuit domain dropping CSFB to carry out speech business, reduce the break period switched, improve the success rate that speech business switches, and then while improving Consumer's Experience, in the present embodiment, if the cell signal strength of the 2G/3G community in gravity treatment Dao LTE community and preset range meets first pre-conditioned, then VoLTE terminal sends the 3rd position updating request to mobile management entity MME, VoLTE speech business scheme permission flag is carried in 3rd position updating request, the VoLTE speech business scheme permission flag of carrying in the 3rd location update message sent according to mobile management entity MME to make home subscriber server HSS sends the IMS registration request message of VoLTE terminal to multimedia subsystem, IMS, receive the IMS registration success response message that multimedia subsystem, IMS sends, according to IMS registration success response message, VoLTE terminal determines that VoLTE speech business scheme carries out speech business as the speech business scheme of VoLTE terminal, achieving VoLTE terminal when shifting out the LTE center of housing estate position that overlapping region is positioned near gravity treatment, VoLTE voice scheme still can be adopted to carry out speech business.Achieve the variation that VoLTE terminal selects speech business scheme, make VoLTE terminal have better adaptability to network environment.
Fig. 4 is the signaling process figure of VoLTE terminal speech operational program defining method embodiment three of the present invention, and as shown in Figure 4, the method comprises:
Step 301, the cell signal strength of VoLTE terminal to preset range Nei LTE community and 2G/3G community is measured.
Step 302, VoLTE terminal according to the cell signal strength measured in preset range from 2G/2G cell reselection to LTE community.
Step 303, VoLTE terminal judges its whether store the mark of gravity treatment Dao LTE community, if so, then perform step 304, if not, then perform step 312.
Step 304, VoLTE terminal sends primary importance update request to mobile management entity MME, carries VoLTE speech business scheme restriction mark in primary importance update request.
In the present embodiment, the gravity treatment of VoLTE terminal is in LTE community, VoLTE terminal is launch position renewal process initiatively, primary importance update request is wherein the position updating request of initiatively launch position renewal process, when storing the LTE cell ID that gravity treatment is arrived in VoLTE terminal, VoLTE speech business scheme restriction mark is carried in primary importance update request, and in primary importance update request, also carry the LTE cell ID that VoLTE terminal iidentification and gravity treatment are arrived, to carry out follow-up position updating process.
In the present embodiment, VoLTE terminal iidentification is the symbol of any one unique identification terminal in international mobile subscriber identity IMSI, mobile subscriber number MSISDN, IP address, IP multimedia public identity IMPU, also can be self-defining identifier, the present embodiment limit.Gravity treatment to LTE cell ID to attach most importance to the Physical Cell Identifier number of the LTE community chosen.
In the present embodiment, in the gravity treatment of VoLTE terminal in LTE community, and store the LTE cell ID that gravity treatment is arrived in VoLTE terminal, carry VoLTE speech business scheme restriction mark in primary importance update request then in VoLTE terminal active launch position renewal process, carry out IMS log off procedure for follow-up VoLTE terminal and prepare.
Step 305, mobile management entity MME sends primary importance updating message to home subscriber server HSS, carries VoLTE speech business scheme restriction mark in primary importance updating message.
Step 306, home subscriber server HSS sends location updating response message to mobile management entity MME.
Step 307, mobile management entity MME sends location updating to VoLTE terminal and completes message.
Step 308, home subscriber server HSS sends IMS de-registration request message according to the VoLTE speech business scheme restriction mark in primary importance updating message to multimedia subsystem, IMS.
In the present embodiment, step 306 and step 308 perform step 308 after first can performing step 306, and perform step 306 after also first can performing step 308, or perform simultaneously, the present embodiment does not limit.
Step 309, the IMS that multimedia subsystem, IMS sends VoLTE terminal to mobile management entity MME nullifies success response.
Step 310, the IMS that mobile management entity MME sends VoLTE terminal to VoLTE terminal nullifies success response.
Step 311, VoLTE terminal is nullified success response message determination circuit domain dropping CSFB according to IMS and is carried out speech business as the speech business scheme of VoLTE terminal, performs step 317.
Step 312, VoLTE terminal sends second place update request to mobile management entity MME.
In the present embodiment, in the gravity treatment of VoLTE terminal in LTE community, and do not store the LTE cell ID that gravity treatment is arrived in VoLTE terminal, VoLTE speech business scheme restriction mark is no longer carried in second place update request then in VoLTE terminal active launch position renewal process, only carry the LTE cell ID that VoLTE terminal iidentification and gravity treatment are arrived, to carry out active position renewal process.
In the present embodiment, second place update request no longer carries the mark of VoLTE terminal and the mark of LTE community, to ensure that the VoLTE terminal not in pre-conditioned scope still adopts the voice scheme in IMS PS territory to carry out speech business.In the present embodiment, step 312-step 315 initiatively carries out the process of location updating for carrying out VoLTE terminal.
Step 313, mobile management entity MME sends second place updating message to home subscriber server HSS.
Step 314, home subscriber server HSS sends location updating response message to mobile management entity MME.
Step 315, mobile management entity MME sends location updating to VoLTE terminal and completes message.
Step 316, if VoLTE terminal is initiated speech business in LTE community and moved to 2G/3G community in Preset Time Nei Cong LTE community, then the mark of VoLTE terminal storage LTE community, performs step 301.
In the present embodiment, Preset Time presets, to ensure that VoLTE terminal is positioned at the overlapping region 3 of LTE community 1 and 2G/3G community 2 when initiating speech business.
Step 317, it is first pre-conditioned whether the cell signal strength of the 2G/3G community in VoLTE terminal judges gravity treatment Dao LTE community and preset range meets, and if so, then performs step 318, if not, then perform step 311.
In the present embodiment, the LTE cell signal strength of the first pre-conditioned gravity treatment for measuring is greater than the 3rd threshold value and the 2G/3G cell signal strength measured is less than the 4th threshold value, wherein, 3rd threshold value and the 4th threshold value preset, 3rd threshold value represents that terminal shifts out the LTE cell signal strength value measured when thoroughly entering gravity treatment Dao LTE community from overlapping region 3, and the 4th threshold value represents that VoLTE terminal shifts out the 2G/3G cell signal strength value measured when thoroughly entering gravity treatment Dao LTE community from overlapping region 3.
When the 2G/3G community in gravity treatment Dao LTE community and preset range cell signal strength meet first pre-conditioned time, VoLTE terminal shifts out the LTE center of housing estate position that overlapping region 3 is positioned at close gravity treatment, can be expressed as the regional extent of the LTE community 1 that the dotted line in Fig. 2 Zhong LTE community 1 represents.
In the present embodiment, when the 2G/3G community in gravity treatment Dao LTE community and preset range cell signal strength meet first pre-conditioned time, VoLTE terminal shifts out the LTE center of housing estate position that overlapping region 3 is positioned at close gravity treatment, carry out in periodic position updating process in VoLTE terminal, VoLTE speech business scheme permission flag is carried in the 3rd position updating request, VoLTE speech business scheme permission flag in the 3rd location update message sent according to mobile management entity MME to make attribution server HSS sends the IMS registration request message of VoLTE terminal to multimedia subsystem, IMS.When shifting out the LTE center of housing estate position that overlapping region 3 is positioned near gravity treatment to make VoLTE terminal, VoLTE voice scheme still can be adopted to carry out speech business.
Step 318, VoLTE terminal sends the 3rd position updating request to institute's mobile management entity MME, carries VoLTE speech business scheme permission flag in the 3rd position updating request.
In the present embodiment, the 3rd position updating request be VoLTE terminal periodic carry out the position updating request that position updating process sends to MME.
Step 319, mobile management entity MME sends the 3rd location update message to home subscriber server HSS, carries VoLTE speech business scheme permission flag in the 3rd location update message.
3rd location update message be VoLTE terminal periodic carry out the location update message that position updating process mobile management entity MME sends to attribution server HSS.
Step 320, home subscriber server HSS sends the IMS registration request message of VoLTE terminal to multimedia subsystem, IMS.
Step 321, multimedia subsystem, IMS sends the IMS registration success response of VoLTE terminal to mobile management entity MME.
Step 322, mobile management entity MME sends IMS registration success response message to VoLTE terminal.
In the present embodiment, VoLTE terminal receives the IMS registration success response message that the multimedia subsystem, IMS in LTE community sends, and represents that VoLTE terminal shifts out when overlapping region 3 is positioned at LTE community 1 near center location of close gravity treatment and still adopts VoLTE speech business scheme.
Step 323, according to IMS registration success response message, VoLTE terminal determines that VoLTE speech business scheme carries out speech business as the speech business scheme of described VoLTE terminal.
In the present embodiment, according to IMS registration success response message, VoLTE terminal determines that VoLTE speech business scheme carries out speech business as the speech business scheme of VoLTE terminal, is specially and determines that the voice scheme in IMSPS territory carries out speech business.
It should be noted that, in the present embodiment, when the 2G/3G community in VoLTE terminal judges gravity treatment Dao LTE community and preset range cell signal strength meet first pre-conditioned time also to carry out periodic position updating process, identical with position updating process of the prior art, repeat no longer one by one in the present embodiment, this periodic position updating process marks in the diagram.
In the present embodiment, frequently speech business is initiated in the overlapping region of LTE community and 2G/3G community by storing in VoLTE terminal, and the LTE cell ID of 2G/3G community is moved to from overlapping region, VoLTE speech business scheme is limited mark by active position renewal process and sends to network element and the IMS cancellation carrying out VoLTE terminal by VoLTE terminal, determine that in overlapping region circuit domain dropping CSFB carries out speech business as the speech business scheme of described VoLTE terminal, and when VoLTE terminal shifts out the LTE center of housing estate position that overlapping region is positioned near gravity treatment, network element is sent to carry out the IMS registration of VoLTE terminal VoLTE speech business scheme permission flag by the periodic location update process of VoLTE terminal, VoLTE voice scheme is still adopted to carry out speech business, the simply mutual IMS to VoLTE terminal achieving terminal and network element nullifies and registers, determine corresponding speech business scheme, and achieve the variation that VoLTE terminal selects speech business scheme, VoLTE terminal is made to have better adaptability to network environment.
Fig. 5 is the structural representation of VoLTE terminal embodiment one of the present invention, and as shown in Figure 5, this VoLTE terminal comprises: gravity treatment module 501, sending module 502, receiver module 503 and determination module 504.Wherein, gravity treatment module 501, for according to the cell signal strength measured in preset range from 2G/3G cell reselection to LTE community.Sending module 502, if for storing the LTE cell ID that gravity treatment is arrived, then send primary importance update request to mobile management entity MME, carry VoLTE speech business scheme restriction mark in primary importance update request, the VoLTE speech business scheme restriction mark of carrying in the primary importance updating message sent according to mobile management entity MME to make home subscriber server HSS is to the IMS de-registration request message of multimedia subsystem, IMS transmission VoLTE terminal.Receiver module 503, the IMS sent for receiving multimedia subsystem, IMS nullifies success response message.Determination module 504, carries out speech business for nullifying success response message determination circuit domain dropping CSFB according to IMS as the speech business scheme of VoLTE terminal.
The VoLTE terminal of the present embodiment can perform the technical scheme of embodiment of the method shown in Fig. 1, and it realizes principle and technique effect is similar, repeats no more herein.
Fig. 6 is the structural representation of VoLTE terminal embodiment two of the present invention, and as shown in Figure 6, this VoLTE terminal comprises: gravity treatment module 601, sending module 602, receiver module 603, determination module 604, memory module 605 and measurement module 606.
Wherein, gravity treatment module 601, for according to the cell signal strength measured in preset range from 2G/3G cell reselection to LTE community.Sending module 602, if for storing the LTE cell ID that gravity treatment is arrived, then send primary importance update request to mobile management entity MME, carry VoLTE speech business scheme restriction mark in primary importance update request, the VoLTE speech business scheme restriction mark of carrying in the primary importance updating message sent according to mobile management entity MME to make home subscriber server HSS is to the IMS de-registration request message of multimedia subsystem, IMS transmission VoLTE terminal.Receiver module 603, the IMS sent for receiving multimedia subsystem, IMS nullifies success response message.Determination module 604, carries out speech business for nullifying success response message determination circuit domain dropping CSFB according to IMS as the speech business scheme of VoLTE terminal.
Further, sending module 602, also nullify after success response message determination circuit domain dropping CSFB carries out speech business as the speech business scheme of VoLTE terminal for: VoLTE terminal according to IMS, if the cell signal strength of the 2G/3G community in gravity treatment Dao LTE community and preset range meets first pre-conditioned, then VoLTE terminal sends the 3rd position updating request to mobile management entity MME, VoLTE speech business scheme permission flag is carried in 3rd position updating request, the VoLTE speech business scheme permission flag of carrying in the 3rd location update message sent according to mobile management entity MME to make home subscriber server HSS sends the IMS registration request message of VoLTE terminal to multimedia subsystem, IMS,
Receiver module 603, also for receiving the IMS registration success response message that multimedia subsystem, IMS sends.
Determination module 604, also for determining that VoLTE speech business scheme carries out speech business as the speech business scheme of VoLTE terminal according to IMS registration success response message.
Further, memory module 605, for according to the cell signal strength measured in preset range from 2G/3G cell reselection to LTE community before, Ruo LTE community is initiated speech business and is also moved to 2G/3G community in Preset Time Nei Cong LTE community, then store the mark of LTE community.
Further, measurement module 606, for according to the cell signal strength measured in preset range from 2G/3G cell reselection to LTE community before, the LTE community of preset range and the cell signal strength of 2G/3G community are measured.
The device of the present embodiment can perform the technical scheme of embodiment of the method shown in Fig. 3 and Fig. 4, and it realizes principle and technique effect is similar, repeats no more herein.
One of ordinary skill in the art will appreciate that: all or part of step realizing above-mentioned each embodiment of the method can have been come by the hardware that program command is relevant.Aforesaid program can be stored in a computer read/write memory medium.This program, when performing, performs the step comprising above-mentioned each embodiment of the method; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (8)
1. a VoLTE terminal speech operational program defining method, is characterized in that, comprising:
VoLTE terminal according to the cell signal strength measured in preset range from 2G/3G cell reselection to LTE community;
If the LTE cell ID that described VoLTE terminal storage has described gravity treatment to arrive, then described VoLTE terminal sends primary importance update request to mobile management entity MME, carry VoLTE speech business scheme restriction mark in described primary importance update request, the VoLTE speech business scheme restriction mark of carrying in the primary importance updating message sent according to described mobile management entity MME to make home subscriber server HSS sends the IMS de-registration request message of described VoLTE terminal to multimedia subsystem, IMS;
Described VoLTE terminal receives the IMS cancellation success response message that described multimedia subsystem, IMS sends;
Described VoLTE terminal is nullified success response message determination circuit domain dropping CSFB according to described IMS and is carried out speech business as the speech business scheme of described VoLTE terminal.
2. method according to claim 1, is characterized in that, described VoLTE terminal is nullified after success response message determination circuit domain dropping CSFB carries out speech business as the speech business scheme of described VoLTE terminal according to described IMS, also comprises:
If the cell signal strength of the 2G/3G community in described gravity treatment Dao LTE community and preset range meets first pre-conditioned, then described VoLTE terminal sends the 3rd position updating request to described mobile management entity MME, carry VoLTE speech business scheme permission flag in described 3rd position updating request, the described VoLTE speech business scheme permission flag of carrying in the 3rd location update message sent according to described mobile management entity MME to make home subscriber server HSS sends the IMS registration request message of described VoLTE terminal to described multimedia subsystem, IMS;
Described VoLTE terminal receives the IMS registration success response message that described multimedia subsystem, IMS sends;
According to described IMS registration success response message, described VoLTE terminal determines that VoLTE speech business scheme carries out speech business as the speech business scheme of described VoLTE terminal.
3. method according to claim 2, is characterized in that, described VoLTE terminal according to the cell signal strength measured in preset range from 2G/3G cell reselection to LTE community before, also comprise:
If described VoLTE terminal is initiated speech business in LTE community and is moved to 2G/3G community in Preset Time Nei Cong LTE community, then the mark of LTE community described in described VoLTE terminal storage.
4. method according to claim 1, is characterized in that, described VoLTE terminal according to the cell signal strength measured in preset range from 2G/3G cell reselection to LTE community before, also comprise:
Described VoLTE terminal is measured the LTE community of preset range and the cell signal strength of 2G/3G community.
5. a VoLTE terminal, is characterized in that, comprising:
Gravity treatment module, for according to the cell signal strength measured in preset range from 2G/3G cell reselection to LTE community;
Sending module, if for storing the LTE cell ID that described gravity treatment is arrived, then send primary importance update request to mobile management entity MME, carry VoLTE speech business scheme restriction mark in described primary importance update request, the VoLTE speech business scheme restriction mark of carrying in the primary importance updating message sent according to described mobile management entity MME to make home subscriber server HSS sends the IMS de-registration request message of described VoLTE terminal to multimedia subsystem, IMS;
Receiver module, the IMS sent for receiving described multimedia subsystem, IMS nullifies success response message;
Determination module: carry out speech business as the speech business scheme of described VoLTE terminal for nullifying success response message determination circuit domain dropping CSFB according to described IMS.
6. terminal according to claim 5, it is characterized in that, described sending module, also for nullifying after success response message determination circuit domain dropping CSFB carries out speech business as the speech business scheme of described VoLTE terminal according to described IMS, if the cell signal strength of the 2G/3G community in described gravity treatment Dao LTE community and preset range meets first pre-conditioned, then send the 3rd position updating request to described mobile management entity MME, VoLTE speech business scheme permission flag is carried in described 3rd position updating request, the described VoLTE speech business scheme permission flag of carrying in the 3rd location update message sent according to described mobile management entity MME to make home subscriber server HSS sends the IMS registration request message of described VoLTE terminal to multimedia subsystem, IMS,
Described receiver module, also for receiving the IMS registration success response message that described multimedia subsystem, IMS sends;
Described determination module, also for determining that VoLTE speech business scheme carries out speech business as the speech business scheme of described VoLTE terminal according to described IMS registration success response message.
7. terminal according to claim 6, it is characterized in that, also comprise: memory module, for: according to the cell signal strength measured in preset range from 2G/3G cell reselection to LTE community before, if described VoLTE terminal is initiated speech business in LTE community and moved to 2G/3G community in Preset Time Nei Cong LTE community, then store the mark of described LTE community.
8. terminal according to claim 5, it is characterized in that, also comprise: measurement module, for according to the cell signal strength measured in preset range from 2G/3G cell reselection to LTE community before, the LTE community of preset range and the cell signal strength of 2G/3G community are measured.
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